demos/browser/toolbarsearch.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the demonstration applications of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "toolbarsearch.h"
       
    43 #include "autosaver.h"
       
    44 
       
    45 #include <QtCore/QSettings>
       
    46 #include <QtCore/QUrl>
       
    47 
       
    48 #include <QtGui/QCompleter>
       
    49 #include <QtGui/QMenu>
       
    50 #include <QtGui/QStringListModel>
       
    51 
       
    52 #include <QtWebKit/QWebSettings>
       
    53 
       
    54 /*
       
    55     ToolbarSearch is a very basic search widget that also contains a small history.
       
    56     Searches are turned into urls that use Google to perform search
       
    57  */
       
    58 ToolbarSearch::ToolbarSearch(QWidget *parent)
       
    59     : SearchLineEdit(parent)
       
    60     , m_autosaver(new AutoSaver(this))
       
    61     , m_maxSavedSearches(10)
       
    62     , m_stringListModel(new QStringListModel(this))
       
    63 {
       
    64     QMenu *m = menu();
       
    65     connect(m, SIGNAL(aboutToShow()), this, SLOT(aboutToShowMenu()));
       
    66     connect(m, SIGNAL(triggered(QAction*)), this, SLOT(triggeredMenuAction(QAction*)));
       
    67 
       
    68     QCompleter *completer = new QCompleter(m_stringListModel, this);
       
    69     completer->setCompletionMode(QCompleter::InlineCompletion);
       
    70     lineEdit()->setCompleter(completer);
       
    71 
       
    72     connect(lineEdit(), SIGNAL(returnPressed()), SLOT(searchNow()));
       
    73     setInactiveText(tr("Google"));
       
    74     load();
       
    75 }
       
    76 
       
    77 ToolbarSearch::~ToolbarSearch()
       
    78 {
       
    79     m_autosaver->saveIfNeccessary();
       
    80 }
       
    81 
       
    82 void ToolbarSearch::save()
       
    83 {
       
    84     QSettings settings;
       
    85     settings.beginGroup(QLatin1String("toolbarsearch"));
       
    86     settings.setValue(QLatin1String("recentSearches"), m_stringListModel->stringList());
       
    87     settings.setValue(QLatin1String("maximumSaved"), m_maxSavedSearches);
       
    88     settings.endGroup();
       
    89 }
       
    90 
       
    91 void ToolbarSearch::load()
       
    92 {
       
    93     QSettings settings;
       
    94     settings.beginGroup(QLatin1String("toolbarsearch"));
       
    95     QStringList list = settings.value(QLatin1String("recentSearches")).toStringList();
       
    96     m_maxSavedSearches = settings.value(QLatin1String("maximumSaved"), m_maxSavedSearches).toInt();
       
    97     m_stringListModel->setStringList(list);
       
    98     settings.endGroup();
       
    99 }
       
   100 
       
   101 void ToolbarSearch::searchNow()
       
   102 {
       
   103     QString searchText = lineEdit()->text();
       
   104     QStringList newList = m_stringListModel->stringList();
       
   105     if (newList.contains(searchText))
       
   106         newList.removeAt(newList.indexOf(searchText));
       
   107     newList.prepend(searchText);
       
   108     if (newList.size() >= m_maxSavedSearches)
       
   109         newList.removeLast();
       
   110 
       
   111     QWebSettings *globalSettings = QWebSettings::globalSettings();
       
   112     if (!globalSettings->testAttribute(QWebSettings::PrivateBrowsingEnabled)) {
       
   113         m_stringListModel->setStringList(newList);
       
   114         m_autosaver->changeOccurred();
       
   115     }
       
   116 
       
   117     QUrl url(QLatin1String("http://www.google.com/search"));
       
   118     url.addQueryItem(QLatin1String("q"), searchText);
       
   119     url.addQueryItem(QLatin1String("ie"), QLatin1String("UTF-8"));
       
   120     url.addQueryItem(QLatin1String("oe"), QLatin1String("UTF-8"));
       
   121     url.addQueryItem(QLatin1String("client"), QLatin1String("qtdemobrowser"));
       
   122     emit search(url);
       
   123 }
       
   124 
       
   125 void ToolbarSearch::aboutToShowMenu()
       
   126 {
       
   127     lineEdit()->selectAll();
       
   128     QMenu *m = menu();
       
   129     m->clear();
       
   130     QStringList list = m_stringListModel->stringList();
       
   131     if (list.isEmpty()) {
       
   132         m->addAction(tr("No Recent Searches"));
       
   133         return;
       
   134     }
       
   135 
       
   136     QAction *recent = m->addAction(tr("Recent Searches"));
       
   137     recent->setEnabled(false);
       
   138     for (int i = 0; i < list.count(); ++i) {
       
   139         QString text = list.at(i);
       
   140         m->addAction(text)->setData(text);
       
   141     }
       
   142     m->addSeparator();
       
   143     m->addAction(tr("Clear Recent Searches"), this, SLOT(clear()));
       
   144 }
       
   145 
       
   146 void ToolbarSearch::triggeredMenuAction(QAction *action)
       
   147 {
       
   148     QVariant v = action->data();
       
   149     if (v.canConvert<QString>()) {
       
   150         QString text = v.toString();
       
   151         lineEdit()->setText(text);
       
   152         searchNow();
       
   153     }
       
   154 }
       
   155 
       
   156 void ToolbarSearch::clear()
       
   157 {
       
   158     m_stringListModel->setStringList(QStringList());
       
   159     m_autosaver->changeOccurred();;
       
   160 }
       
   161