/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt Mobility Components.

**

** $QT_BEGIN_LICENSE:BSD$

** You may use this file under the terms of the BSD license as follows:

**

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** modification, are permitted provided that the following conditions are

** met:

**   * Redistributions of source code must retain the above copyright

**     notice, this list of conditions and the following disclaimer.

**   * Redistributions in binary form must reproduce the above copyright

**     notice, this list of conditions and the following disclaimer in

**     the documentation and/or other materials provided with the

**     distribution.

**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor

**     the names of its contributors may be used to endorse or promote

**     products derived from this software without specific prior written

**     permission.

**

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****************************************************************************/

#if defined(Q_OS_SYMBIAN)

// Maximized windows are resizing correctly on S60 w/ Qt 4.6.0

// Use tabs to reduce the minimal height required

#define USE_TABBED_LAYOUT

#endif

#include "messagesender.h"

#include <QComboBox>

#include <QCoreApplication>

#include <QDateTime>

#include <QFileDialog>

#include <QGroupBox>

#include <QLabel>

#include <QLayout>

#include <QLineEdit>

#include <QListWidget>

#include <QMessageBox>

#include <QPushButton>

#include <QTextEdit>

#include <QTimer>

#include <QDebug>

#include <QScrollArea>

#ifdef USE_TABBED_LAYOUT

#include <QTabWidget>

#endif

MessageSender::MessageSender(QWidget *parent, Qt::WindowFlags flags)

    : QWidget(parent, flags),

      accountCombo(0),

      toEdit(0),

      subjectEdit(0),

      textEdit(0),

      sendButton(0),

      removeButton(0),

      addButton(0),

      attachmentsList(0)

{

    QVBoxLayout* vbl = new QVBoxLayout(this);

    vbl->setSpacing(0);

    vbl->setContentsMargins(0,0,0,0);

    QWidget* mainWidget = new QWidget(this);

    QScrollArea* sa = new QScrollArea(this);

    vbl->addWidget(sa);

    sa->setWidget(mainWidget);

    sa->setWidgetResizable(true);

    setWindowTitle(tr("Write Message"));

    accountCombo = new QComboBox;

    connect(accountCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(accountSelected(int)));

    toEdit = new QLineEdit;

    subjectEdit = new QLineEdit;

    QLabel *accountLabel = new QLabel(tr("Account"));

    accountLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

    QLabel *toLabel = new QLabel(tr("To"));

    toLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

    QLabel *subjectLabel = new QLabel(tr("Subject"));

    subjectLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

    QGridLayout *metaDataLayout = new QGridLayout;

    metaDataLayout->setContentsMargins(0, 0, 0, 0);

    metaDataLayout->addWidget(accountLabel, 0, 0);

    metaDataLayout->setAlignment(accountLabel, Qt::AlignRight);

    metaDataLayout->addWidget(toLabel, 1, 0);

    metaDataLayout->setAlignment(toLabel, Qt::AlignRight);

    metaDataLayout->addWidget(subjectLabel, 2, 0);

    metaDataLayout->setAlignment(subjectLabel, Qt::AlignRight);

    metaDataLayout->addWidget(accountCombo, 0, 1);

    metaDataLayout->addWidget(toEdit, 1, 1);

    metaDataLayout->addWidget(subjectEdit, 2, 1);

    removeButton = new QPushButton(tr("Remove"));

    removeButton->setEnabled(false);

    connect(removeButton, SIGNAL(clicked()), this, SLOT(removeAttachment()));

    addButton = new QPushButton(tr("Add"));

    connect(addButton, SIGNAL(clicked()), this, SLOT(addAttachment()));

    QHBoxLayout *buttonLayout = new QHBoxLayout;

    buttonLayout->setContentsMargins(0, 0, 0, 0);

    buttonLayout->addWidget(addButton);

    buttonLayout->addWidget(removeButton);

    attachmentsList = new QListWidget;

    attachmentsList->setSelectionMode(QAbstractItemView::SingleSelection);

    connect(attachmentsList, SIGNAL(currentRowChanged(int)), this, SLOT(attachmentSelected(int)));

    QVBoxLayout *attachmentsLayout = new QVBoxLayout;

    attachmentsLayout->setContentsMargins(0, 0, 0, 0);

    attachmentsLayout->addWidget(attachmentsList);

    attachmentsLayout->addLayout(buttonLayout);

    QGroupBox *attachmentsGroup = new QGroupBox(tr("Attachments"));

    attachmentsGroup->setLayout(attachmentsLayout);

#ifdef Q_WS_MAEMO_5

    // Maemo 5 style doesn't take group box titles into account.

    int spacingHack = QFontMetrics(QFont()).height();

    attachmentsLayout->setContentsMargins(0, spacingHack, 0, 0);

#endif

    textEdit = new QTextEdit;

    sendButton = new QPushButton(tr("Send"));

    connect(sendButton, SIGNAL(clicked()), this, SLOT(send()), Qt::QueuedConnection);

#ifdef USE_TABBED_LAYOUT

    QTabWidget *tabWidget = new QTabWidget;

    tabWidget->addTab(textEdit, tr("Text"));

    tabWidget->addTab(attachmentsGroup, tr("Attachments"));

#endif

    QVBoxLayout *mainLayout = new QVBoxLayout(mainWidget);

    mainLayout->setContentsMargins(0, 0, 0, 0);

    mainLayout->addLayout(metaDataLayout, 0);

#ifdef USE_TABBED_LAYOUT

    mainLayout->addWidget(tabWidget, 0);

#else

    mainLayout->addWidget(textEdit, 2);

    mainLayout->addWidget(attachmentsGroup, 1);

#endif

    mainLayout->addWidget(sendButton, 0);

    mainLayout->setAlignment(sendButton, Qt::AlignRight);

    connect(&service, SIGNAL(stateChanged(QMessageService::State)), this, SLOT(stateChanged(QMessageService::State)));

    QTimer::singleShot(0, this, SLOT(populateAccounts()));

    QWidgetList focusableWidgets;

    focusableWidgets << accountCombo

                     << toEdit

                     << subjectEdit

#ifdef USE_TABBED_LAYOUT

                     << tabWidget

#else

                     << textEdit

                     << attachmentsList

#endif

                     << addButton

                     << removeButton

                     << sendButton;

    foreach(QWidget* w, focusableWidgets)

        w->setContextMenuPolicy(Qt::NoContextMenu);

    accountCombo->setFocus();

}

MessageSender::~MessageSender()

{

}

void MessageSender::populateAccounts()

{

#ifndef _WIN32_WCE

    // How long can the accounts query take?

    setCursor(Qt::BusyCursor);

#endif

//! [accounts-listing]

    // Find the list of available accounts and add them to combo box

    foreach (const QMessageAccountId &id, manager.queryAccounts()) {

        QMessageAccount account(id);

        // What is the most capable message type supported by this account?

        QMessage::Type type(QMessage::NoType);

        if (account.messageTypes() & QMessage::Email) {

            type = QMessage::Email;

        } else if (account.messageTypes() & QMessage::Mms) {

            type = QMessage::Mms;

        } else if (account.messageTypes() & QMessage::Sms) {

            type = QMessage::Sms;

        }

        if (type != QMessage::NoType) {

            QString name(account.name());

            accountDetails.insert(name, qMakePair(type, account.id()));

            accountCombo->addItem(name);

        }

    }

//! [accounts-listing]

    if (accountDetails.isEmpty()) {

        QMessageBox::warning(0, tr("Cannot send"), tr("No accounts are available to send with!"));

        QCoreApplication::instance()->quit();

    } else {

        accountCombo->setCurrentIndex(0);

    }

#ifndef _WIN32_WCE

    setCursor(Qt::ArrowCursor);

#endif

}

void MessageSender::removeAttachment()

{

    delete attachmentsList->takeItem(attachmentsList->currentRow());

    if (attachmentsList->count() == 0) {

        removeButton->setEnabled(false);

    }

}

void MessageSender::addAttachment()

{

    QString path(QFileDialog::getOpenFileName());

    if (!path.isEmpty()) {

        attachmentsList->addItem(new QListWidgetItem(path));

    }

}

//! [account-selected]

void MessageSender::accountSelected(int index)

{

    QString name(accountCombo->itemText(index));

    if (!name.isEmpty()) {

        QPair<QMessage::Type, QMessageAccountId> details = accountDetails[name];

        // Enable subject only for email

        subjectEdit->setEnabled(details.first == QMessage::Email);

        // Disable attachments for SMS

        const bool smsOnly(details.first == QMessage::Sms);

        addButton->setEnabled(!smsOnly);

        removeButton->setEnabled(!smsOnly);

    }

}

//! [account-selected]

void MessageSender::attachmentSelected(int index)

{

    removeButton->setEnabled(index != -1);

}

void MessageSender::send()

{

//! [associate-account]

    QString accountName(accountCombo->currentText());

    if (accountName.isEmpty()) {

        QMessageBox::warning(0, tr("Missing information"), tr("No account is selected for transmission"));

        return;

    }

    QMessage message;

    QPair<QMessage::Type, QMessageAccountId> details = accountDetails[accountName];

    message.setType(details.first);

    message.setParentAccountId(details.second);

//! [associate-account]

//! [set-recipients]

    QString to(toEdit->text());

    if (to.isEmpty()) {

        QMessageBox::warning(0, tr("Missing information"), tr("Please enter a recipient address"));

        return;

    }

    // Find the address type to use for this message

    QMessageAddress::Type addrType(message.type() == QMessage::Email ? QMessageAddress::Email : QMessageAddress::Phone);

    QMessageAddressList toList;

    foreach (const QString &item, to.split(QRegExp("\\s"), QString::SkipEmptyParts)) {

        toList.append(QMessageAddress(addrType, item));

    }

    message.setTo(toList);

//! [set-recipients]

//! [set-properties]

    if (message.type() == QMessage::Email) {

        QString subject(subjectEdit->text());

        if (subject.isEmpty()) {

            QMessageBox::warning(0, tr("Missing information"), tr("Please enter a subject"));

            return;

        }

        message.setSubject(subject);

    }

    QString text(textEdit->toPlainText());

    if (text.isEmpty()) {

        QMessageBox::warning(0, tr("Missing information"), tr("Please enter a message"));

        return;

    }

    message.setBody(text);

//! [set-properties]

//! [add-attachments]

    if (message.type() != QMessage::Sms) {

        if (attachmentsList->count()) {

            QStringList paths;

            for (int i = 0; i < attachmentsList->count(); ++i) {

                paths.append(attachmentsList->item(i)->text());

            }

            message.appendAttachments(paths);

        }

    }

//! [add-attachments]

//! [send-message]

    sendButton->setEnabled(false);

    if (service.send(message)) {

        sendId = message.id();

    } else {

        sendButton->setEnabled(true);

        QMessageBox::warning(0, tr("Failed"), tr("Unable to send message"));

    }

//! [send-message]

}

//! [handle-response]

void MessageSender::stateChanged(QMessageService::State newState)

{

    if (newState == QMessageService::FinishedState) {

        if (service.error() == QMessageManager::NoError) {

            QMessageBox::information(0, tr("Success"), tr("Message sent successfully"));

        } else {

            QMessageBox::warning(0, tr("Failed"), tr("Unable to send message"));

            // Try to delete the failed message

            if (!manager.removeMessage(sendId)) {

                qWarning() << "Unable to remove failed message:" << sendId.toString();

            }

        }

        sendId = QMessageId();

        sendButton->setEnabled(true);

    }

}

//! [handle-response]