doc/src/tutorials/addressbook-fr.qdoc
author Eckhart Koeppen <eckhart.koppen@nokia.com>
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/*!
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    \page tutorials-addressbook-fr.html
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    \startpage {index.html}{Qt Reference Documentation}
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    \contentspage Tutorials
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    \nextpage {tutorials/addressbook-fr/part1}{Chapitre 1}
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    \title Tutoriel "Carnet d'adresses"
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    \brief Une introduction à la programation d'interface graphique montrant comment construire une application simple avec Qt.
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    Ce tutoriel est une introduction à la programmation de GUI (interface utilisateur)
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    à l'aide des outils fournis par la plateforme multiplate-forme Qt.
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    \image addressbook-tutorial-screenshot.png
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    Ce tutoriel va nous amener à découvrir quelques technologies fondamentales fournies 
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    par Qt, tel que:
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    \list
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    \o Les Widgets et leur mise en page à l'aide des layouts
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    \o Les signaux et slots
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    \o Les structures de données de collections
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    \o Les entrées/sorties
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    \endlist
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    Si c'est votre premier contact avec Qt, lisez \l{How to Learn Qt}{Comment apprendre Qt}
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    si ce n'est déjà fait.
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    Le code source du tutoriel est distribué avec Qt dans le dossier \c examples/tutorials/addressbook
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    Les chapitres du tutoriel:
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    \list 1
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    \o \l{tutorials/addressbook-fr/part1}{Conception de l'interface utilisateur}
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    \o \l{tutorials/addressbook-fr/part2}{Ajouter des adresses}
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    \o \l{tutorials/addressbook-fr/part3}{Navigation entre les éléments}
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    \o \l{tutorials/addressbook-fr/part4}{éditer et supprimer des adresses}
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    \o \l{tutorials/addressbook-fr/part5}{Ajout d'une fonction de recherche}
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    \o \l{tutorials/addressbook-fr/part6}{Sauvegarde et chargement}
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    \o \l{tutorials/addressbook-fr/part7}{Fonctionnalités avancées}
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    \endlist
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    La petite application que nous développerons ici ne possède pas tous les éléments
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    des interfaces dernier cri, elle va nous permettre d'utiliser les techniques de base
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    utilisées dans les applications plus complexes.
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    Lorsque vous aurez terminé ce tutoriel, nous vous recommandons de poursuivre avec l'exemple
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    "\l{mainwindows/application}{Application}", qui présente une interface simple utilisant
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    les menus et barres d'outils, la barre d'état, etc.
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*/
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/*!
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    \page tutorials-addressbook-fr-part1.html
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    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
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    \nextpage {tutorials/addressbook-fr/part2}{Chapitre 2}
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    \example tutorials/addressbook-fr/part1
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    \title Carnet d'adresses 1 - Conception de l'interface utilisateur
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    La première partie de ce tutoriel traite de la conception d'une interface graphique
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    (GUI) basique, que l'on utilisera pour l'application Carnet d'adresses.
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    La première étape dans la création d'applications graphiques est la conception de
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    l'interface utilisateur. Dans ce chapitre, nous verrons comment créer les labels
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    et champs de saisie nécessaires à l'implementation d'un carnet d'adresses de base.
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    Le résultat attendu est illustré par la capture d'écran ci-dessous.
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    \image addressbook-tutorial-part1-screenshot.png
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    Nous allons avoir besoin de deux objets QLabel, \c nameLabel et \c addressLabel,
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    ainsi que deux champs de saisie: un objet QLineEdit, \c nameLine, et un objet
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    QTextEdit, \c addressText, afin de permettre à l'utilisateur d'entrer le nom d'un
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    contact et son adresse. Les widgets utilisés ainsi que leur placement sont visibles ci-dessous.
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    \image addressbook-tutorial-part1-labeled-screenshot.png
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    Trois fichiers sont nécessaires à l'implémentation de ce carnet d'adresses:
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    \list
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        \o \c{addressbook.h} - le fichier de définition (header) pour la classe \c AddressBook,
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        \o \c{addressbook.cpp} - le fichier source, qui comprend l'implémentation de la classe
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            \c AddressBook
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        \o \c{main.cpp} - le fichier qui contient la méthode \c main() , et
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        une instance de la classe \c AddressBook.
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    \endlist
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    \section1 Programmation en Qt - héritage
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    Lorsque l'on écrit des programmes avec Qt, on a généralement recours à
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    l'héritage depuis des objets Qt, afin d'y ajouter des fonctionnalités.
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    C'est l'un des concepts fondamentaux de la création de widgets personnalisés
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    ou de collections de widgets. Utiliser l'héritage afin de compléter
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    ou modifier le comportement d'un widget présente les avantages suivants:
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    \list
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    \o La possibilité d'implémenter des méthodes virtuelles et des méthodes 
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    virtuelles pures pour obtenir exactement ce que l'on souhaite, avec la possibilité
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    d'utiliser l'implémentation de la classe mère si besoin est.
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    \o Cela permet l'encapsulation partielle de l'interface utilisateur dans une classe,
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    afin que les autres parties de l'application n'aient pas à se soucier de chacun des
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    widgets qui forment l'interface utilisateur.
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    \o La classe fille peut être utilisée pour créer de nombreux widgets personnalisés
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    dans une même application ou bibliothèque, et le code de la classe fille peut être
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    réutilisé dans d'autres projets
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    \endlist
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    Comme Qt ne fournit pas de widget standard pour un carnet d'adresses, nous 
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    partirons d'une classe de widget Qt standard et y ajouterons des fonctionnalités.
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    La classe \c AddressBook crée dans ce tutoriel peut être réutilisée si on a besoin d'un
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    widget carnet d'adresses basique.
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    \section1 La classe AddressBook
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    Le fichier \l{tutorials/addressbook-fr/part1/addressbook.h}{\c addressbook.h} permet de
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    définir la classe \c AddressBook.
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    On commence par définir \c AddressBook comme une classe fille de QWidget et déclarer
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    un constructeur. On utilise également la macro Q_OBJECT pour indiquer que la classe
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    exploite les fonctionnalités de signaux et slots offertes par Qt ainsi que
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    l'internationalisation, bien que nous ne les utilisions pas à ce stade.
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    \snippet tutorials/addressbook-fr/part1/addressbook.h class definition
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    La classe contient les déclarations de \c nameLine et \c addressText,
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    les instances privées de QLineEdit et QTextEdit mentionnées précédemment.
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    Vous verrez, dans les chapitres à venir que les informations contenues
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    dans \c nameLine et \c addressText sont nécessaires à de nombreuses méthodes
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    du carnet d'adresses.
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    Il n'est pas nécessaire de déclarer les objets QLabel que nous allons utiliser 
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    puisque nous n'aurons pas besoin d'y faire référence après leur création.
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    La façon dont Qt gère la parenté des objets est traitée dans la section suivante.
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    La macro Q_OBJECT implémente des fonctionnalités parmi les plus avancées de Qt.
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    Pour le moment, il est bon de voir la macro Q_OBJECT comme un raccourci nous 
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    permettant d'utiliser les méthodes \l{QObject::}{tr()} et \l{QObject::}{connect()}.
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    Nous en avons maintenant terminé avec le fichier \c addressbook.h et allons
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    passer à l'implémentation du fichier \c addressbook.cpp.
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    \section1 Implémentation de la classe AddressBook
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    Le constructeur de la classe \c{AddressBook} prend en paramètre un QWidget, \e parent.
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    Par convention, on passe ce paramètre au constructeur de la classe mère.
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    Ce concept de parenté, où un parent peut avoir un ou plusieurs enfants, est utile
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    pour regrouper les Widgets avec Qt. Par exemple, si vous détruisez le parent,
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    tous ses enfants seront détruits égalament.
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    \snippet tutorials/addressbook/part1/addressbook.cpp constructor and input fields
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    à l'intérieur de ce constructeur, on déclare et instancie deux objets locaux
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    QLabel, \c nameLabel et \c addressLabel, de même on instancie \c nameLine et
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    \c addressText. La méthode \l{QObject::tr()}{tr()} renvoie une version traduite
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    de la chaîne de caractères, si elle existe; dans le cas contraire, elle renvoie
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    la chaîne elle même. On peut voir cette méthode comme un marqueur \tt{<insérer
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    la traduction ici>}, permettant de repérer les objets QString à considérer
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    pour traduire une application. Vous remarquerez, dans les chapitres à venir
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    comme dans les \l{Qt Examples}{exemples Qt}, qu'elle est utilisée chaque fois
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    que l'on utilise une chaîne susceptible d'être traduite.
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    Lorsque l'on programme avec Qt, il est utile de savoir comment fonctionnent les
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    agencements ou layouts. Qt fournit trois classes principales de layouts pour
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    contrôler le placement des widgets: QHBoxLayout, QVBoxLayout et QGridLayout.
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    \image addressbook-tutorial-part1-labeled-layout.png
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    On utilise un QGridLayout pour positionner nos labels et champs de saisie de manière
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    structurée. QGridLayout divise l'espace disponible en une grille, et place les
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    widgets dans les cellules que l'on spécifie par les numéros de ligne et de colonne.
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    Le diagramme ci-dessus présente les cellules et la position des widgets, et cette
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    organisation est obtenue à l'aide du code suivant:
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    \snippet tutorials/addressbook/part1/addressbook.cpp layout
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    On remarque que le label \c AddressLabel est positionné en utilisant Qt::AlignTop
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    comme argument optionnel. Ceci est destiné à assurer qu'il ne sera pas centré
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    verticalement dans la cellule (1,0). Pour un aperçu rapide des layouts de Qt,
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    consultez la section \l{Layout Management}.
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    Afin d'installer l'objet layout dans un widget, il faut appeler la méthode
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    \l{QWidget::setLayout()}{setLayout()} du widget en question:
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    \snippet tutorials/addressbook/part1/addressbook.cpp setting the layout
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    Enfin, on initialise le titre du widget à "Simple Address Book"
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    \section1 Exécution de l'application
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    Un fichier séparé, \c main.cpp, est utilisé pour la méthode \c main(). Dans cette
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    fonction, on crée une instance de QApplication, \c app. QApplication se charge de
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    des ressources communes à l'ensemble de l'application, tel que les polices de
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    caractères et le curseur par défaut, ainsi que de l'exécution de la boucle d'évènements.
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    De ce fait, il y a toujours un objet QApplication dans toute application graphique en Qt.
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    \snippet tutorials/addressbook/part1/main.cpp main function
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    On construit un nouveau widget \c AddressBook sur la pile et on invoque
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    sa méthode \l{QWidget::show()}{show()} pour l'afficher.
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    Cependant, le widget ne sera pas visible tant que la boucle d'évènements
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    n'aura pas été lancée. On démarre la boucle d'évènements en appelant la
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    méthode \l{QApplication::}{exec()} de l'application; le résultat renvoyé
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    par cette méthode est lui même utilisé comme valeur de retour pour la méthode
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    \c main().
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    On comprend maintenant pourquoi \c AddressBook a été créé sur la pile: à la fin
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    du programme, l'objet sort du scope de la fonction \c main() et tous ses widgets enfants
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    sont supprimés, assurant ainsi qu'il n'y aura pas de fuites de mémoire.
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*/
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/*!
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    \page tutorials-addressbook-fr-part2.html
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    \previouspage {tutorials/addressbook-fr/part1}{Chapitre 1}
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    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
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    \nextpage {tutorials/addressbook-fr/part3}{Chapitre 3}
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    \example tutorials/addressbook-fr/part2
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    \title Carnet d'adresses 2 - Ajouter des adresses
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    La prochaine étape pour créer notre carnet d'adresses est d'ajouter un soupçon
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    d'interactivité.
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    \image addressbook-tutorial-part2-add-contact.png
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    Nous allons fournir un bouton que l'utilisateur peut
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    cliquer pour ajouter un nouveau contact. Une structure de données est aussi
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    nécessaire afin de pouvoir stocker les contacts en mémoire.
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    \section1 Définition de la classe AddressBook
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    Maintenant que nous avons mis en place les labels et les champs de saisie,
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    nous ajoutons les boutons pour compléter le processus d'ajout d'un contact.
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    Cela veut dire que notre fichier \c addressbook.h a maintenant trois
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    objets QPushButton et trois slots publics correspondant.
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    \snippet tutorials/addressbook/part2/addressbook.h slots
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    Un slot est une méthode qui répond à un signal. Nous allons
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    voir ce concept en détail lorsque nous implémenterons la classe \c{AddressBook}.
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    Pour une explication détaillée du concept de signal et slot, vous pouvez
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    vous référer au document \l{Signals and Slots}.
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    Les trois objets QPushButton \c addButton, \c submitButton et \c cancelButton
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    sont maintenant inclus dans la déclaration des variables privées, avec
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    \c nameLine et \c addressText du chapitre précédent.
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    \snippet tutorials/addressbook/part2/addressbook.h pushbutton declaration
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    Nous avons besoin d'un conteneur pour stocker les contacts du carnet
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    d'adresses, de façon à pouvoir les énumérer et les afficher.
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    Un objet QMap, \c contacts, est utilisé pour ça, car il permet de stocker
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    des paires clé-valeur: le nom du contact est la \e{clé} et l'adresse du contact
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    est la \e{valeur}.
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    \snippet tutorials/addressbook/part2/addressbook.h remaining private variables
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    Nous déclarons aussi deux objects QString privés: \c oldName et \c oldAddress.
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    Ces objets sont nécessaires pour conserver le nom et l'adresse du dernier contact
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    affiché avant que l'utilisateur ne clique sur le bouton "Add". Grâce à ces variables
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    si l'utilisateur clique sur "Cancel", il est possible de revenir
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    à l'affichage du dernier contact.
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    \section1 Implémentation de la classe AddressBook
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    Dans le constructeur de \c AddressBook, \c nameLine et
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    \c addressText sont mis en mode lecture seule, de façon à autoriser l'affichage
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    mais pas la modification du contact courant.
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    \dots
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    \snippet tutorials/addressbook/part2/addressbook.cpp setting readonly 1
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    \dots
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    \snippet tutorials/addressbook/part2/addressbook.cpp setting readonly 2
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    Ensuite, nous instancions les boutons \c addButton, \c submitButton, et
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    \c cancelButton.
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    \snippet tutorials/addressbook/part2/addressbook.cpp pushbutton declaration
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    Le bouton \c addButton est affiché en invoquant la méthode \l{QPushButton::show()}
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    {show()}, tandis que \c submitButton et \c cancelButton sont cachés en invoquant
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    \l{QPushButton::hide()}{hide()}. Ces deux boutons ne seront affichés que lorsque 
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    l'utilisateur cliquera sur "Add", et ceci est géré par la méthode \c addContact()
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    décrite plus loin.
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    \snippet tutorials/addressbook/part2/addressbook.cpp connecting signals and slots
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    Nous connectons le signal \l{QPushButton::clicked()}{clicked()} de chaque bouton 
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    au slot qui gèrera l'action.
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    L'image ci-dessous illustre ceci:
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    \image addressbook-tutorial-part2-signals-and-slots.png
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    Ensuite, nous arrangeons proprement les boutons sur la droite du widget
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    AddressBook, et nous utilisons un QVBoxLayout pour les aligner verticalement.
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    \snippet tutorials/addressbook/part2/addressbook.cpp vertical layout
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    La methode \l{QBoxLayout::addStretch()}{addStretch()} est utilisée pour
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    assurer que les boutons ne sont pas répartis uniformément, mais regroupés
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    dans la partie supperieure du widget. La figure ci-dessous montre la différence
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    si \l{QBoxLayout::addStretch()}{addStretch()} est utilisé ou pas.
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    \image addressbook-tutorial-part2-stretch-effects.png
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    Ensuite nous ajoutons \c buttonLayout1 à \c mainLayout, en utilisant
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    \l{QGridLayout::addLayout()}{addLayout()}. Ceci nous permet d'imbriquer les
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    mises en page puisque \c buttonLayout1 est maintenant un enfant de \c mainLayout.
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    \snippet tutorials/addressbook/part2/addressbook.cpp grid layout
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    Les coordonnées du layout global ressemblent maintenant à ça:
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    \image addressbook-tutorial-part2-labeled-layout.png
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    Dans la méthode \c addContact(), nous stockons les détails du dernier
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    contact affiché dans \c oldName et \c oldAddress. Ensuite, nous
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    vidons ces champs de saisie et nous désactivons le mode
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    lecture seule. Le focus est placé sur \c nameLine et on affiche
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    \c submitButton et \c cancelButton.
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    \snippet tutorials/addressbook/part2/addressbook.cpp addContact
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    La méthode \c submitContact() peut être divisée en trois parties:
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   365
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   366
    \list 1
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    \o Nous extrayons les détails du contact depuis \c nameLine et \c addressText
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   368
    et les stockons dans des objets QString. Nous les validons pour s'assurer
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   369
    que l'utilisateur n'a pas cliqué sur "Add" avec des champs de saisie
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   370
    vides; sinon un message est affiché avec QMessageBox pour rappeller à
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   371
    l'utilisateur que les deux champs doivent être complétés.
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   372
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   373
    \snippet tutorials/addressbook/part2/addressbook.cpp submitContact part1
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   374
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   375
    \o Ensuite, nous vérifions si le contact existe déjà. Si aucun contacts
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   376
    existant n'entre en conflit avec le nouveau, nous l'ajoutons à
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parents:
diff changeset
   377
    \c contacts et nous affichons un QMessageBox pour informer l'utilisateur
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   378
    que le contact a été ajouté.
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   380
    \snippet tutorials/addressbook/part2/addressbook.cpp submitContact part2
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parents:
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   381
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parents:
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   382
    Si le contact existe déjà, nous affichons un QMessageBox pour informer
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   383
    l'utilisateur du problème.
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parents:
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   384
    Notre objet \c contacts est basé sur des paires clé-valeur formés par
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parents:
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   385
    le nom et l'adresse, nous voulons nous assurer que la \e clé est unique.
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parents:
diff changeset
   386
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parents:
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   387
    \o Une fois que les deux vérifications précédentes ont été traitées,
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parents:
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   388
    nous restaurons les boutons à leur état normal à l'aide du code
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parents:
diff changeset
   389
    suivant:
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   390
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   391
    \snippet tutorials/addressbook/part2/addressbook.cpp submitContact part3
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parents:
diff changeset
   392
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parents:
diff changeset
   393
    \endlist
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parents:
diff changeset
   394
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   395
    La capture d'écran ci-dessous montre l'affichage fournit par un objet
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   396
    QMessageBox, utilisé ici pour afficher un message d'information
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parents:
diff changeset
   397
    à l'utilisateur:
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parents:
diff changeset
   398
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   399
    \image addressbook-tutorial-part2-add-successful.png
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parents:
diff changeset
   400
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   401
    La méthode \c cancel() restaure les détails du dernier contact, active
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   402
    \c addButton, et cache \c submitButton et \c cancelButton.
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   403
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   404
    \snippet tutorials/addressbook/part2/addressbook.cpp cancel
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   405
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   406
    L'idée générale pour augmenter la flexibilité lors de l'ajout d'un 
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   407
    contact est de donner la possiblité de cliquer sur "Add" 
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   408
    ou "Cancel" à n'importe quel moment.
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   409
    L'organigramme ci-dessous reprend l'ensemble des interactions dévelopées
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   410
    jusqu'ici:
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   411
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   412
    \image addressbook-tutorial-part2-add-flowchart.png
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parents:
diff changeset
   413
*/
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   414
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   415
/*!
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   416
    \page tutorials-addressbook-fr-part3.html
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   417
    \previouspage {tutorials/addressbook-fr/part2}{Chapitre 2}
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   418
    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
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parents:
diff changeset
   419
    \nextpage {tutorials/addressbook-fr/part4}{Chapitre 4}
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   420
    \example tutorials/addressbook-fr/part3
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   421
    \title Carnet d'adresses 3 - Navigation entre les éléments
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   422
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   423
    L'application "Carnet d'adresses" est maintenant à moitié terminée. Il
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   424
    nous faut maintenant ajouter quelques fonctions pour naviguer entre
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   425
    les contacts. Avant de commencer, il faut se décider sur le type de structure de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   426
    données le plus approprié pour stocker les contacts.
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   427
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   428
    Dans le chapitre 2, nous avons utilisé un QMap utilisant des paires clé-valeur,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   429
    avec le nom du contact comme \e clé, et l'adresse du contact comme \e valeur.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   430
    Cela fonctionnait bien jusqu'ici, mais pour ajouter la navigation entre les
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   431
    entrées, quelques améliorations sont nécessaires.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   432
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   433
    Nous améliorerons le QMap en le faisant ressembler à une structure de données
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   434
    similaire à une liste liée, où tous les éléments sont connectés, y compris
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   435
    le premier et le dernier élément. La figure ci-dessous illustre cette structure
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   436
    de donnée.
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   437
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   438
    \image addressbook-tutorial-part3-linkedlist.png
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Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   439
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   440
    \section1 Définition de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   441
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   442
    Pour ajouter les fonctions de navigation au carnet d'adresses, nous avons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   443
    besoin de deux slots supplémentaires dans notre classe \c AddressBook:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   444
    \c next() et \c previous(). Ceux-ci sont ajoutés au fichier addressbook.h:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   445
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   446
    \snippet tutorials/addressbook/part3/addressbook.h navigation functions
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   447
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   448
    Nous avons aussi besoin de deux nouveaux objets QPushButton, nous ajoutons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   449
    donc les variables privées \c nextButton et \c previousButton.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   450
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   451
    \snippet tutorials/addressbook/part3/addressbook.h navigation pushbuttons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   452
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   453
    \section1 Implémentation de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   454
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   455
    A l'intérieur du constructeur de \c AddressBook, dans \c addressbook.cpp, nous
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   456
    instancions \c nextButton et \c previousButton et nous les désactivons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   457
    par défaut. Nous faisons ceci car la navigation ne doit être activée
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   458
    que lorsqu'il y a plus d'un contact dans le carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   459
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   460
    \snippet tutorials/addressbook/part3/addressbook.cpp navigation pushbuttons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   461
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   462
    Nous connectons alors ces boutons à leur slots respectifs:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   463
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   464
    \snippet tutorials/addressbook/part3/addressbook.cpp connecting navigation signals
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   465
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   466
    L'image ci-dessous montre l'interface utilisateur que nous allons créer.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   467
    Remarquez que cela ressemble de plus en plus à l'interface du programme
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   468
    complet.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   469
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   470
    \image addressbook-tutorial-part3-screenshot.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   471
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   472
    Nous suivons les conventions pour les fonctions \c next() et \c previous()
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   473
    en plaçant \c nextButton à droite et \c previousButton à gauche. Pour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   474
    faire cette mise en page intuitive, nous utilisons un QHBoxLayout pour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   475
    placer les widgets côte à côte:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   476
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   477
    \snippet tutorials/addressbook/part3/addressbook.cpp navigation layout
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   478
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   479
    L'objet QHBoxLayout, \c buttonLayout2, est ensuite ajouté à \c mainLayout.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   480
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   481
    \snippet tutorials/addressbook/part3/addressbook.cpp adding navigation layout
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   482
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   483
    La figure ci-dessous montre les systèmes de coordonnées pour les widgets du
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   484
    \c mainLayout.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   485
    \image addressbook-tutorial-part3-labeled-layout.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   486
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   487
    Dans notre méthode \c addContact(), nous avons desactivé ces boutons 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   488
    pour être sûr que l'utilisateur n'utilise pas la navigation lors de 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   489
    l'ajout d'un contact.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   490
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   491
    \snippet tutorials/addressbook/part3/addressbook.cpp disabling navigation
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   492
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   493
    Dans notre méthode \c submitContact(), nous activons les boutons de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   494
    navigation, \c nextButton et \c previousButton, en fonction de la
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   495
    taille de \c contacts. Commen mentionné plus tôt, la navigation n'est 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   496
    activée que si il y a plus d'un contact dans le carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   497
    Les lignes suivantes montrent comment faire cela:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   498
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   499
    \snippet tutorials/addressbook/part3/addressbook.cpp enabling navigation
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   500
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   501
    Nous incluons aussi ces lignes de code dans le bouton \c cancel().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   502
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   503
    Souvenez vous que nous voulons émuler une liste-liée ciruculaire à
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   504
    l'aide de l'objet QMap, \c contacts. Pour faire cela, nous obtenons un itérateur 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   505
    sur \c contact dans la méthode \c next(), et ensuite:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   506
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   507
    \list
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   508
        \o Si l'itérateur n'est pas à la fin de \c contacts, nous l'incrémentons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   509
        \o Si l'itérateur est à la fin de \c contacts, nous changeons sa position
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   510
        jusqu'au début de \c contacts. Cela donne l'illusion que notre QMap 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   511
        fonctionne comme une liste circulaire.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   512
    \endlist
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   513
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   514
    \snippet tutorials/addressbook/part3/addressbook.cpp next() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   515
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   516
    Une fois que nous avons itéré jusqu'à l'objet recherché dans \c contacts,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   517
    nous affichons son contenu sur \c nameLine et \c addressText.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   518
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   519
    De la même façon, pour la méthode \c previous(), nous obtenons un 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   520
    itérateur sur \c contacts et ensuite:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   521
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   522
    \list
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   523
        \o Si l'itérateur est à la fin de \c contacts, on réinitialise
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   524
           l'affichage et on retourne.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   525
        \o Si l'itérateur est au début de \c contacts, on change sa 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   526
           position jusqu'à la fin
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   527
        \o Ensuite, on décrémente l'itérateur
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   528
    \endlist
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   529
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   530
    \snippet tutorials/addressbook/part3/addressbook.cpp previous() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   531
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   532
    à nouveau, nous affichons le contenu de l'objet courant dans \c contacts.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   533
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   534
*/
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   535
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   536
/*!
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   537
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   538
    \page tutorials-addressbook-fr-part4.html
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   539
    \previouspage {tutorials/addressbook-fr/part3}{Chapitre 3}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   540
    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   541
    \nextpage {tutorials/addressbook-fr/part5}{Chapitre 5}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   542
    \example tutorials/addressbook-fr/part4
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   543
    \title Carnet d'Adresses 4 - éditer et supprimer des adresses
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   544
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   545
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   546
    Dans ce chapitre, nous verrons comment modifier les données des contacts
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   547
    contenus dans l'application carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   548
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   549
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   550
    \image addressbook-tutorial-screenshot.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   551
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   552
    Nous avons maintenant un carnet d'adresses qui ne se contente pas de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   553
    lister des contacts de façon ordonnée, mais permet également la 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   554
    navigation. Il serait pratique d'inclure des fonctions telles qu'éditer et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   555
    supprimer, afin que les détails associés à un contact puissent être
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   556
    modifiés lorsque c'est nécessaire. Cependant, cela requiert une légère
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   557
    modification, sous la forme d'énumérations. Au chapitre précédent, nous avions deux
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   558
    modes: \c {AddingMode} et \c {NavigationMode}, mais ils n'étaient pas
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   559
    définis en tant qu'énumérations. Au lieu de ça, on activait et désactivait les
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   560
    boutons correspondants manuellement, au prix de multiples redondances dans
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   561
    le code.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   562
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   563
    Dans ce chapitre, on définit l'énumération \c Mode avec trois valeurs possibles.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   564
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   565
    \list
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   566
        \o \c{NavigationMode},
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   567
        \o \c{AddingMode}, et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   568
        \o \c{EditingMode}.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   569
    \endlist
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   570
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   571
    \section1 Définition de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   572
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   573
    Le fichier \c addressbook.h est mis a jour pour contenir l'énumération \c Mode :
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   574
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   575
    \snippet tutorials/addressbook/part4/addressbook.h Mode enum
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   576
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   577
    On ajoute également deux nouveaux slots, \c editContact() et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   578
    \c removeContact(), à notre liste de slots publics.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   579
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   580
    \snippet tutorials/addressbook/part4/addressbook.h edit and remove slots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   581
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   582
    Afin de basculer d'un mode à l'autre, on introduit la méthode
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   583
    \c updateInterface() pour contrôller l'activation et la désactivation de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   584
    tous les objets QPushButton. On ajoute également deux nouveaux boutons,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   585
    \c editButton et \c removeButton, pour les fonctions d'édition
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   586
    et de suppression mentionnées plus haut.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   587
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   588
    \snippet tutorials/addressbook/part4/addressbook.h updateInterface() declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   589
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   590
    \snippet tutorials/addressbook/part4/addressbook.h buttons declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   591
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   592
    \snippet tutorials/addressbook/part4/addressbook.h mode declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   593
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   594
    Enfin, on déclare \c currentMode pour garder une trace du mode 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   595
    actuellement utilisé.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   596
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   597
    \section1 Implémentation de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   598
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   599
    Il nous faut maintenant implémenter les fonctionnalités de changement de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   600
    mode de l'application carnet d'adresses. Les boutons \c editButton et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   601
    \c removeButton sont instanciés et désactivés par défaut, puisque le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   602
    carnet d'adresses démarre sans aucun contact en mémoire.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   603
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   604
    \snippet tutorials/addressbook/part4/addressbook.cpp edit and remove buttons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   605
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   606
    Ces boutons sont ensuite connectés à leurs slots respectifs,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   607
    \c editContact() et \c removeContact(), avant d'être ajoutés à
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   608
    \c buttonLayout1.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   609
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   610
    \snippet tutorials/addressbook/part4/addressbook.cpp connecting edit and remove
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   611
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   612
    \snippet tutorials/addressbook/part4/addressbook.cpp adding edit and remove to the layout
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   613
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   614
    La methode \c editContact() place les anciens détails du contact dans
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   615
    \c oldName et \c oldAddress, avant de basculer vers le mode
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   616
    \c EditingMode. Dans ce mode, les boutons \c submitButton et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   617
    \c cancelButton sont tous deux activés, l'utilisateur peut par conséquent
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   618
    modifier les détails du contact et cliquer sur l'un de ces deux boutons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   619
    par la suite.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   620
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   621
    \snippet tutorials/addressbook/part4/addressbook.cpp editContact() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   622
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   623
    La méthode \c submitContact() a été divisée en deux avec un bloc
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   624
    \c{if-else}. On teste \c currentMode pour voir si le mode courant est
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   625
    \c AddingMode. Si c'est le cas, on procède à l'ajout.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   626
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   627
    \snippet tutorials/addressbook/part4/addressbook.cpp submitContact() function beginning
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   628
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   629
    \snippet tutorials/addressbook/part4/addressbook.cpp submitContact() function part1
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   630
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   631
    Sinon, on s'assure que \c currentMode est en \c EditingMode. Si c'est le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   632
    cas, on compare \c oldName et \c name. Si le nom a changé, on supprime
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   633
    l'ancien contact de \c contacts et on insère le contact mis a jour.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   634
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   635
    \snippet tutorials/addressbook/part4/addressbook.cpp submitContact() function part2
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   636
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   637
    Si seule l'adresse a changé (i.e. \c oldAddress n'est pas identique à
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   638
    \c address), on met à jour l'adresse du contact. Enfin on règle
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   639
    \c currentMode à \c NavigationMode. C'est une étape importante puisque
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   640
    c'est cela qui réactive tous les boutons désactivés.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   641
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   642
    Afin de retirer un contact du carnet d'adresses, on implémente la méthode
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   643
    \c removeContact(). Cette méthode vérifie que le contact est présent dans
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   644
    \c contacts.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   645
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   646
    \snippet tutorials/addressbook/part4/addressbook.cpp removeContact() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   647
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   648
    Si c'est le cas, on affiche une boîte de dialogue QMessageBox, demandant
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   649
    confirmation de la suppression à l'utilisateur. Une fois la confirmation
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   650
    effectuée, on appelle \c previous(), afin de s'assurer que l'interface
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   651
    utilisateur affiche une autre entrée, et on supprime le contact en
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   652
    utilisant le méthode \l{QMap::remove()}{remove()} de \l{QMap}. Dans un
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   653
    souci pratique, on informe l'utilisateur de la suppression par le biais
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   654
    d'une autre QMessageBox. Les deux boîtes de dialogue utilisées dans cette
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   655
    méthode sont représentées ci-dessous.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   656
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   657
    \image addressbook-tutorial-part4-remove.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   658
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   659
    \section2 Mise à jour de l'Interface utilisateur
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   660
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   661
    On a évoqué plus haut la méthode \c updateInterface() comme moyen
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   662
    d'activer et de désactiver les différents boutons de l'interface en
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   663
    fonction du mode. Cette méthode met à jour le mode courant selon
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   664
    l'argument \c mode qui lui est passé, en l'assignant à \c currentMode,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   665
    avant de tester sa valeur.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   666
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   667
    Chacun des boutons est ensuite activé ou désactivé, en fonction du mode.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   668
    Le code source pour les cas \c AddingMode et \c EditingMode est visible 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   669
    ci-dessous:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   670
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   671
    \snippet tutorials/addressbook/part4/addressbook.cpp update interface() part 1
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   672
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   673
    Dans le cas de \c NavigationMode, en revanche, des tests conditionnels
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   674
    sont passés en paramètre de QPushButton::setEnabled(). Ceci permet de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   675
    s'assurer que les boutons \c editButton et \c removeButton ne sont activés
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   676
    que s'il existe au moins un contact dans le carnet d'adresses;
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   677
    \c nextButton et \c previousButton ne sont activés que lorsqu'il existe
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   678
    plus d'un contact dans le carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   679
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   680
    \snippet tutorials/addressbook/part4/addressbook.cpp update interface() part 2
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   681
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   682
    En effectuant les opérations de réglage du mode et de mise à jour de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   683
    l'interface utilisateur au sein de la même méthode, on est à l'abri de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   684
    l'éventualité où l'interface utilisateur se "désynchronise" de l'état
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   685
    interne de l'application.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   686
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   687
*/
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   688
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   689
/*!
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   690
    \page tutorials-addressbook-fr-part5.html
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   691
    \previouspage {tutorials/addressbook-fr/part4}{Chapitre 4}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   692
    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   693
    \nextpage {tutorials/addressbook-fr/part6}{Chapitre 6}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   694
    \example tutorials/addressbook-fr/part5
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   695
    \title Carnet d'adresse 5 - Ajout d'une fonction de recherche
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   696
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   697
    Dans ce chapitre, nous allons voir les possibilités pour rechercher
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   698
    des contacts dans le carnet d'adresse.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   699
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   700
    \image addressbook-tutorial-part5-screenshot.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   701
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   702
    Plus nous ajoutons des contacts dans l'application, plus
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   703
    il devient difficile de naviguer avec les boutons \e Next et \e Previous.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   704
    Dans ce cas, une fonction de recherche serait plus efficace pour rechercher
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   705
    les contacts.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   706
    La capture d'écran ci-dessus montre le bouton de recherche \e Find et sa position
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   707
    dans le paneau de bouton.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   708
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   709
    Lorsque l'utilisateur clique sur le bouton \e Find, il est courant d'afficher
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   710
    une boîte de dialogue qui demande à l'utilisateur d'entrer un nom de contact.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   711
    Qt fournit la classe QDialog, que nous sous-classons dans ce chapitre pour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   712
    implémenter la class \c FindDialog.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   713
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   714
    \section1 Définition de la classe FindDialog
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   715
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   716
    \image addressbook-tutorial-part5-finddialog.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   717
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   718
    Pour sous-classer QDialog, nous commençons par inclure le header de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   719
    QDialog dans le fichier \c finddialog.h. De plus, nous déclarons les
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   720
    classes QLineEdit et QPushButton car nous utilisons ces widgets dans
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   721
    notre classe dialogue.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   722
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   723
    Tout comme dans la classe \c AddressBook, la classe \c FindDialog utilise
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   724
    la macro Q_OBJECT et son constructeur est défini de façon à accepter
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   725
    un QWidget parent, même si cette boîte de dialogue sera affichée dans une
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   726
    fenêtre séparée.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   727
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   728
    \snippet tutorials/addressbook/part5/finddialog.h FindDialog header
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   729
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   730
    Nous définissons la méthode publique \c getFindText() pour être utilisée
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   731
    par les classes qui instancient \c FindDialog, ce qui leur permet d'obtenir
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   732
    le texte entré par l'utilisateur. Un slot public, \c findClicked(), est
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   733
    défini pour prendre en charge le texte lorsque l'utilisateur clique sur
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   734
    le bouton \gui Find.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   735
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   736
    Finalement, nous définissons les variables privées \c findButton,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   737
    \c lineEdit et \c findText, qui correspondent respectivement au bouton
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   738
    \gui Find, au champ de texte dans lequel l'utilisateur tape le texte
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   739
    à rechercher, et à une variable interne stockant le texte pour une
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   740
    utilisation ultérieure.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   741
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   742
    \section1 Implémentation de la classe FindDialog
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   743
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   744
    Dans le constructeur de \c FindDialog, nous instancions les objets des
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   745
    variables privées \c lineEdit, \c findButton et \c findText. Nous utilisons ensuite
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   746
    un QHBoxLayout pour positionner les widgets.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   747
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   748
    \snippet tutorials/addressbook/part5/finddialog.cpp constructor
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   749
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   750
    Nous mettons en place la mise en page et le titre de la fenêtre, et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   751
    nous connectons les signaux aux slots. Remarquez que le signal
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   752
    \l{QPushButton::clicked()}{clicked()} de \c{findButton} est connecté
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   753
    à \c findClicked() et \l{QDialog::accept()}{accept()}. Le slot
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   754
    \l{QDialog::accept()}{accept()} fourni par le QDialog ferme
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   755
    la boîte de dialogue et lui donne le code de retour \l{QDialog::}{Accepted}.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   756
    Nous utilisons cette fonction pour aider la méthode \c findContact() de la classe
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   757
    \c{AddressBook} à savoir si l'objet \c FindDialog a été fermé. Ceci sera
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   758
    expliqué plus loin lorsque nous verrons la méthode \c findContact().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   759
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   760
    \image addressbook-tutorial-part5-signals-and-slots.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   761
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   762
    Dans \c findClicked(), nous validons le champ de texte pour nous
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   763
    assurer que l'utilisateur n'a pas cliqué sur le bouton \gui Find sans
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   764
    avoir entré un nom de contact. Ensuite, nous stockons le texte du champ
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   765
    d'entrée \c lineEdit dans \c findText. Et finalement nous vidons le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   766
    contenu de \c lineEdit et cachons la boîte de dialogue.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   767
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   768
    \snippet tutorials/addressbook/part5/finddialog.cpp findClicked() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   769
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   770
    La variable \c findText a un accesseur publique associé: \c getFindText().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   771
    Étant donné que nous ne modifions \c findText directement que dans le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   772
    constructeur et la méthode \c findClicked(), nous ne créons pas
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   773
    de manipulateurs associé à \c getFindText().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   774
    Puisque \c getFindText() est publique, les classes instanciant et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   775
    utilisant \c FindDialog peuvent toujours accéder à la chaîne de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   776
    caractères que l'utilisateur a entré et accepté.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   777
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   778
    \snippet tutorials/addressbook/part5/finddialog.cpp getFindText() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   779
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   780
    \section1 Définition de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   781
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   782
    Pour utiliser \c FindDialog depuis la classe \c AddressBook, nous
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   783
    incluons \c finddialog.h dans le fichier \c addressbook.h.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   784
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   785
    \snippet tutorials/addressbook/part5/addressbook.h include finddialog's header
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   786
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   787
    Jusqu'ici, toutes les fonctionnalités du carnet d'adresses ont un
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   788
    QPushButton et un slot correspondant. De la même façon, pour la
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   789
    fonctionnalité \gui Find, nous avons \c findButton et \c findContact().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   790
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   791
    Le \c findButton est déclaré comme une variable privée et la
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   792
    méthode \c findContact() est déclarée comme un slot public.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   793
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   794
    \snippet tutorials/addressbook/part5/addressbook.h findContact() declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   795
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   796
    \snippet tutorials/addressbook/part5/addressbook.h findButton declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   797
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   798
    Finalement, nous déclarons la variable privée \c dialog que nous allons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   799
    utiliser pour accéder à une instance de \c FindDialog.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   800
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   801
    \snippet tutorials/addressbook/part5/addressbook.h FindDialog declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   802
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   803
    Une fois que nous avons instancié la boîte de dialogue, nous voulons l'utiliser
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   804
    plus qu'une fois. Utiliser une variable privée nous permet d'y référer
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   805
    à plus d'un endroit dans la classe.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   806
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   807
    \section1 Implémentation de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   808
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   809
    Dans le constructeur de \c AddressBook, nous instancions nos objets privés,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   810
    \c findbutton et \c findDialog:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   811
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   812
    \snippet tutorials/addressbook/part5/addressbook.cpp instantiating findButton
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   813
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   814
    \snippet tutorials/addressbook/part5/addressbook.cpp instantiating FindDialog
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   815
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   816
    Ensuite, nous connectons le signal \l{QPushButton::clicked()}{clicked()} de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   817
    \c{findButton} à \c findContact().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   818
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   819
    \snippet tutorials/addressbook/part5/addressbook.cpp signals and slots for find
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   820
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   821
    Maintenant, tout ce qui manque est le code de notre méthode \c findContact():
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   822
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   823
    \snippet tutorials/addressbook/part5/addressbook.cpp findContact() function
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   824
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   825
    Nous commençons par afficher l'instance de \c FindDialog, \c dialog.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   826
    L'utilisateur peut alors entrer le nom du contact à rechercher. Lorsque
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   827
    l'utilisateur clique sur le bouton \c findButton, la boîte de dialogue est
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   828
    masquée et le code de retour devient QDialog::Accepted. Ce code de retour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   829
    vient remplir la condition du premier if.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   830
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   831
    Ensuite, nous extrayons le texte que nous utiliserons pour la recherche,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   832
    il s'agit ici de \c contactName obtenu à l'aide de la méthode \c getFindText()
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   833
    de \c FindDialog. Si le contact existe dans le carnet d'adresse, nous
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   834
    l'affichons directement. Sinon, nous affichons le QMessageBox suivant pour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   835
    indiquer que la recherche à échouée.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   836
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   837
    \image addressbook-tutorial-part5-notfound.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   838
*/
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   839
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   840
/*!
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   841
    \page tutorials-addressbook-part6.html
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   842
    \previouspage {tutorials/addressbook-fr/part5}{Chapitre 5}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   843
    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   844
    \nextpage {tutorials/addressbook-fr/part7}{Chapitre 7}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   845
    \example tutorials/addressbook-fr/part6
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   846
    \title Carnet d'Adresses 6 - Sauvegarde et chargement
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   847
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   848
    Ce chapitre couvre les fonctionnalités de gestion des fichiers de Qt que
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   849
    l'on utilise pour écrire les procédures de sauvegarde et chargement pour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   850
    l'application carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   851
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   852
    \image addressbook-tutorial-part6-screenshot.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   853
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   854
    Bien que la navigation et la recherche de contacts soient des
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   855
    fonctionnalités importantes, notre carnet d'adresses ne sera pleinement
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   856
    utilisable qu'une fois que l'on pourra sauvegarder les contacts existants
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   857
    et les charger à nouveau par la suite.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   858
    Qt fournit de nombreuses classes pour gérer les \l{Input/Output and
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   859
    Networking}{entrées et sorties}, mais nous avons choisi de nous contenter d'une
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   860
    combinaison de deux classes simples à utiliser ensemble: QFile et QDataStream.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   861
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   862
    Un objet QFile représente un fichier sur le disque qui peut être lu, et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   863
    dans lequel on peut écrire. QFile est une classe fille de la classe plus
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   864
    générique QIODevice, qui peut représenter différents types de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   865
    périphériques.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   866
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   867
    Un objet QDataStream est utilisé pour sérialiser des données binaires
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   868
    dans le but de les passer à un QIODevice pour les récupérer dans le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   869
    futur. Pour lire ou écrire dans un QIODevice, il suffit d'ouvrir le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   870
    flux, avec le périphérique approprié en paramètre, et d'y lire ou
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   871
    écrire.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   872
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   873
    \section1 Définition de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   874
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   875
    On déclare deux slots publics, \c saveToFile() et \c loadFromFile(), 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   876
    ainsi que deux objets QPushButton, \c loadButton et \c saveButton.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   877
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   878
    \snippet tutorials/addressbook/part6/addressbook.h save and load functions declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   879
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   880
    \snippet tutorials/addressbook/part6/addressbook.h save and load buttons declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   881
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   882
    \section1 Implémentation de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   883
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   884
    Dans notre constructeur, on instancie \c loadButton et \c saveButton.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   885
    Idéalement, l'interface serait plus conviviale avec des boutons
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   886
    affichant "Load contacts from a file" et "Save contacts to a file". Mais
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   887
    compte tenu de la dimension des autres boutons, on initialise les labels
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   888
    des boutons à \gui{Load...} et \gui{Save...}. Heureusement, Qt offre une
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   889
    façon simple d'ajouter des info-bulles avec
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   890
    \l{QWidget::setToolTip()}{setToolTip()}, et nous l'exploitons de la façon
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   891
    suivante pour nos boutons:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   892
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   893
    \snippet tutorials/addressbook/part6/addressbook.cpp tooltip 1
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   894
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   895
    \snippet tutorials/addressbook/part6/addressbook.cpp tooltip 2
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   896
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   897
    Bien qu'on ne cite pas le code correspondant ici, nous ajoutons ces deux boutons au
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   898
    layout de droite, \c button1Layout, comme pour les fonctionnalités précédentes, et 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   899
    nous connectons leurs signaux
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   900
    \l{QPushButton::clicked()}{clicked()} à leurs slots respectifs.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   901
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   902
    Pour la sauvegarde, on commence par récupérer le nom de fichier 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   903
    \c fileName, en utilisant QFileDialog::getSaveFileName(). C'est une
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   904
    méthode pratique fournie par QFileDialog, qui ouvre une boîte de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   905
    dialogue modale et permet à l'utilisateur d'entrer un nom de fichier ou
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   906
    de choisir un fichier \c{.abk} existant. Les fichiers \c{.abk}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   907
    correspondent à l'extension choisie pour la sauvegarde des contacts de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   908
    notre carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   909
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   910
    \snippet tutorials/addressbook/part6/addressbook.cpp saveToFile() function part1
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   911
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   912
    La boîte de dialogue affichée est visible sur la capture d'écran ci-
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   913
    dessous.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   914
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   915
    \image addressbook-tutorial-part6-save.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   916
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   917
    Si \c fileName n'est pas vide, on crée un objet QFile, \c file, à partir
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   918
    de \c fileName. QFile fonctionne avec QDataStream puisqu'il dérive de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   919
    QIODevice.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   920
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   921
    Ensuite, on essaie d'ouvrir le fichier en écriture, ce qui correspond au
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   922
    mode \l{QIODevice::}{WriteOnly}. Si cela échoue, on en informe
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   923
    l'utilisateur avec une QMessageBox.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   924
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   925
    \snippet tutorials/addressbook/part6/addressbook.cpp saveToFile() function part2
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   926
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   927
    Dans le cas contraire, on instancie un objet QDataStream, \c out, afin
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   928
    d'écrire dans le fichier ouvert. QDataStream nécessite que la même
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   929
    version de flux soit utilisée pour la lecture et l'écriture. On s'assure
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   930
    que c'est le cas en spécifiant explicitement d'utiliser la
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   931
    \l{QDataStream::Qt_4_5}{version introduite avec Qt 4.5} avant de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   932
    sérialiser les données vers le fichier \c file.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   933
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   934
    \snippet tutorials/addressbook/part6/addressbook.cpp saveToFile() function part3
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   935
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   936
    Pour le chargement, on récupère également \c fileName en utilisant
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   937
    QFileDialog::getOpenFileName(). Cette méthode est l'homologue de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   938
    QFileDialog::getSaveFileName() et affiche également une boîte de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   939
    dialogue modale permettant à l'utilisateur d'entrer un nom de fichier ou
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   940
    de selectionner un fichier \c{.abk} existant, afin de le charger dans le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   941
    carnet d'adresses.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   942
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   943
    \snippet tutorials/addressbook/part6/addressbook.cpp loadFromFile() function part1
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   944
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   945
    Sous Windows, par exemple, cette méthode affiche une boîte de dialogue
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   946
    native pour la sélection de fichier, comme illustré sur la capture
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   947
    d'écran suivante:
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   948
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   949
    \image addressbook-tutorial-part6-load.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   950
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   951
    Si \c fileName n'est pas vide, on utilise une fois de plus un objet
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   952
    QFile, \c file, et on tente de l'ouvrir en lecture, avec le mode
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   953
    \l{QIODevice::}{ReadOnly}. De même que précédemment dans notre
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   954
    implémentation de \c saveToFile(), si cette tentative s'avère
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   955
    infructueuse, on en informe l'utilisateur par le biais d'une
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   956
    QMessageBox.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   957
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   958
    \snippet tutorials/addressbook/part6/addressbook.cpp loadFromFile() function part2
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   959
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   960
    Dans le cas contraire, on instancie un objet QDataStream, \c in, en
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   961
    spécifiant la version à utiliser comme précédemment, et on lit les
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   962
    informations sérialisées vers la structure de données \c contacts. Notez
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   963
    qu'on purge \c contacts avant d'y mettre les informations lues afin de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   964
    simplifier le processus de lecture de fichier. Une façon plus avancée de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   965
    procéder serait de lire les contacts dans un objet QMap temporaire, et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   966
    de copier uniquement les contacts n'existant pas encore dans
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   967
    \c contacts.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   968
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   969
    \snippet tutorials/addressbook/part6/addressbook.cpp loadFromFile() function part3
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   970
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   971
    Pour afficher les contacts lus depuis le fichier, on doit d'abord
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   972
    valider les données obtenues afin de s'assurer que le fichier lu
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   973
    contient effectivement des entrées de carnet d'adresses. Si c'est le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   974
    cas, on affiche le premier contact; sinon on informe l'utilisateur du
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   975
    problème par une QMessageBox. Enfin, on met à jour l'interface afin
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   976
    d'activer et de désactiver les boutons de façon appropriée.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   977
*/
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   978
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   979
/*!
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   980
    \page tutorials-addressbook-fr-part7.html
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   981
    \previouspage {tutorials/addressbook-fr/part6}{Chapitre 6}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   982
    \contentspage {Tutoriel "Carnet d'adresses"}{Sommaire}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   983
    \example tutorials/addressbook-fr/part7
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   984
    \title Carnet d'adresse 7 - Fonctionnalités avancées
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   985
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   986
    Ce chapitre couvre quelques fonctionnalités additionnelles qui
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   987
    feront de notre carnet d'adresses une application plus pratique
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   988
    pour une utilisation quotidienne.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   989
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   990
    \image addressbook-tutorial-part7-screenshot.png
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   991
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   992
    Bien que notre application carnet d'adresses soit utile en tant que telle,
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   993
    il serait pratique de pouvoir échanger les contacts avec d'autres applications.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   994
    Le format vCard est un un format de fichier populaire pour échanger
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   995
    ce type de données.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   996
    Dans ce chapitre, nous étendrons notre carnet d'adresses pour permettre
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   997
    d'exporter des contacts dans des fichiers vCard \c{.vcf}.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   998
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
   999
    \section1 Définition de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1000
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1001
    Nous ajoutons un objet QPushButton, \c exportButton, et un slot
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1002
    public correspondant, \c exportAsVCard(), à notre classe \c AddressBook 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1003
    dans le fichier \c addressbook.h.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1004
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1005
    \snippet tutorials/addressbook/part7/addressbook.h exportAsVCard() declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1006
    \dots
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1007
    \snippet tutorials/addressbook/part7/addressbook.h exportButton declaration
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1008
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1009
    \section1 Implémentation de la classe AddressBook
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1010
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1011
    Dans le constructeur de \c AddressBook, nous connectons le signal
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1012
    \l{QPushButton::clicked()}{clicked()} de \c{exportButton} au slot
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1013
    \c exportAsVCard().
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1014
    Nous ajoutons aussi ce bouton à \c buttonLayout1, le layout responsable
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1015
    du groupe de boutons sur la droite.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1016
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1017
    Dans la méthode \c exportAsVCard(), nous commençons par extraire le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1018
    nom du contact dans \n name. Nous déclarons \c firstname, \c lastName et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1019
    \c nameList.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1020
    Ensuite, nous cherchons la position du premier espace blanc de \c name.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1021
    Si il y a un espace, nous séparons le nom du contact en \c firstName et
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1022
    \c lastName. Finalement, nous remplaçons l'espace par un underscore ("_").
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1023
    Si il n'y a pas d'espace, nous supposons que le contact ne comprend que
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1024
    le prénom.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1025
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1026
    \snippet tutorials/addressbook/part7/addressbook.cpp export function part1
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1027
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1028
    Comme pour la méthode \c saveToFile(), nous ouvrons une boîte de dialogue
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1029
    pour donner la possibilité à l'utilisateur de choisir un emplacement pour
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1030
    le fichier. Avec le nom de fichier choisi, nous créons une instance de QFile
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1031
    pour y écrire.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1032
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1033
    Nous essayons d'ouvrir le fichier en mode \l{QIODevice::}{WriteOnly}. Si
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1034
    cela échoue, nous affichons un QMessageBox pour informer l'utilisateur
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1035
    à propos de l'origine du problème et nous quittons la méthode. Sinon, nous passons le
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1036
    fichier comme paramètre pour créer un objet QTextStream, \c out. De la même façon que
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1037
    QDataStream, la classe QTextStream fournit les fonctionnalités pour 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1038
    lire et écrire des fichiers de texte. Grâce à celà, le fichier \c{.vcf}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1039
    généré pourra être ouvert et édité à l'aide d'un simple éditeur de texte.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1040
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1041
    \snippet tutorials/addressbook/part7/addressbook.cpp export function part2
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1042
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1043
    Nous écrivons ensuite un fichier vCard avec la balise \c{BEGIN:VCARD},
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1044
    suivit par \c{VERSION:2.1}.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1045
    Le nom d'un contact est écrit à l'aide de la balise \c{N:}. Pour la balise
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1046
    \c{FN:}, qui remplit le titre du contact, nous devons vérifier si le contact
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1047
    à un nom de famille défini ou non. Si oui, nous utilions les détails de
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1048
    \c nameList pour remplir le champ, dans le cas contraire on écrit uniquement le contenu
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1049
    de \c firstName.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1050
 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1051
    \snippet tutorials/addressbook/part7/addressbook.cpp export function part3
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1052
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1053
    Nous continuons en écrivant l'adresse du contact. Les points-virgules
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1054
    dans l'adresse sont échappés à l'aide de "\\", les retours de ligne sont
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1055
    remplacés par des points-virgules, et les vigules sont remplacées par des espaces.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1056
    Finalement nous écrivons les balises  \c{ADR;HOME:;} suivies par l'adresse
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1057
    et la balise \c{END:VCARD}.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1058
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1059
    \snippet tutorials/addressbook/part7/addressbook.cpp export function part4
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1060
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1061
    À la fin de la méthode, un QMessageBox est affiché pour informer l'utilisateur
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1062
    que la vCard a été exportée avec succès. 
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1063
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1064
    \e{vCard est une marque déposée de \l{http://www.imc.org}
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1065
    {Internet Mail Consortium}}.
3f74d0d4af4c qt:70947f0f93d948bc89b3b43d00da758a51f1ef84
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
diff changeset
  1066
*/