Long live Qt 4.5!

1 files changed, 830 insertions, 0 deletions

diff --git a/demos/browser/tabwidget.cpp b/demos/browser/tabwidget.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "tabwidget.h"
+
+#include "browserapplication.h"
+#include "browsermainwindow.h"
+#include "history.h"
+#include "urllineedit.h"
+#include "webview.h"
+
+#include <QtGui/QClipboard>
+#include <QtGui/QCompleter>
+#include <QtGui/QListView>
+#include <QtGui/QMenu>
+#include <QtGui/QMessageBox>
+#include <QtGui/QMouseEvent>
+#include <QtGui/QStackedWidget>
+#include <QtGui/QStyle>
+#include <QtGui/QToolButton>
+
+#include <QtCore/QDebug>
+
+TabBar::TabBar(QWidget *parent)
+    : QTabBar(parent)
+{
+    setContextMenuPolicy(Qt::CustomContextMenu);
+    setAcceptDrops(true);
+    connect(this, SIGNAL(customContextMenuRequested(const QPoint &)),
+            this, SLOT(contextMenuRequested(const QPoint &)));
+
+    QString alt = QLatin1String("Alt+%1");
+    for (int i = 1; i <= 10; ++i) {
+        int key = i;
+        if (key == 10)
+            key = 0;
+        QShortcut *shortCut = new QShortcut(alt.arg(key), this);
+        m_tabShortcuts.append(shortCut);
+        connect(shortCut, SIGNAL(activated()), this, SLOT(selectTabAction()));
+    }
+    setTabsClosable(true);
+    connect(this, SIGNAL(tabCloseRequested(int)),
+            this, SIGNAL(closeTab(int)));
+    setSelectionBehaviorOnRemove(QTabBar::SelectPreviousTab);
+    setMovable(true);
+}
+
+void TabBar::selectTabAction()
+{
+    if (QShortcut *shortCut = qobject_cast<QShortcut*>(sender())) {
+        int index = m_tabShortcuts.indexOf(shortCut);
+        if (index == 0)
+            index = 10;
+        setCurrentIndex(index);
+    }
+}
+
+void TabBar::contextMenuRequested(const QPoint &position)
+{
+    QMenu menu;
+    menu.addAction(tr("New &Tab"), this, SIGNAL(newTab()), QKeySequence::AddTab);
+    int index = tabAt(position);
+    if (-1 != index) {
+        QAction *action = menu.addAction(tr("Clone Tab"),
+                this, SLOT(cloneTab()));
+        action->setData(index);
+
+        menu.addSeparator();
+
+        action = menu.addAction(tr("&Close Tab"),
+                this, SLOT(closeTab()), QKeySequence::Close);
+        action->setData(index);
+
+        action = menu.addAction(tr("Close &Other Tabs"),
+                this, SLOT(closeOtherTabs()));
+        action->setData(index);
+
+        menu.addSeparator();
+
+        action = menu.addAction(tr("Reload Tab"),
+                this, SLOT(reloadTab()), QKeySequence::Refresh);
+        action->setData(index);
+    } else {
+        menu.addSeparator();
+    }
+    menu.addAction(tr("Reload All Tabs"), this, SIGNAL(reloadAllTabs()));
+    menu.exec(QCursor::pos());
+}
+
+void TabBar::cloneTab()
+{
+    if (QAction *action = qobject_cast<QAction*>(sender())) {
+        int index = action->data().toInt();
+        emit cloneTab(index);
+    }
+}
+
+void TabBar::closeTab()
+{
+    if (QAction *action = qobject_cast<QAction*>(sender())) {
+        int index = action->data().toInt();
+        emit closeTab(index);
+    }
+}
+
+void TabBar::closeOtherTabs()
+{
+    if (QAction *action = qobject_cast<QAction*>(sender())) {
+        int index = action->data().toInt();
+        emit closeOtherTabs(index);
+    }
+}
+
+void TabBar::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton)
+        m_dragStartPos = event->pos();
+    QTabBar::mousePressEvent(event);
+}
+
+void TabBar::mouseMoveEvent(QMouseEvent *event)
+{
+    if (event->buttons() == Qt::LeftButton) {
+        int diffX = event->pos().x() - m_dragStartPos.x();
+        int diffY = event->pos().y() - m_dragStartPos.y();
+        if ((event->pos() - m_dragStartPos).manhattanLength() > QApplication::startDragDistance()
+            && diffX < 3 && diffX > -3
+            && diffY < -10) {
+            QDrag *drag = new QDrag(this);
+            QMimeData *mimeData = new QMimeData;
+            QList<QUrl> urls;
+            int index = tabAt(event->pos());
+            QUrl url = tabData(index).toUrl();
+            urls.append(url);
+            mimeData->setUrls(urls);
+            mimeData->setText(tabText(index));
+            mimeData->setData(QLatin1String("action"), "tab-reordering");
+            drag->setMimeData(mimeData);
+            drag->exec();
+        }
+    }
+    QTabBar::mouseMoveEvent(event);
+}
+
+// When index is -1 index chooses the current tab
+void TabWidget::reloadTab(int index)
+{
+    if (index < 0)
+        index = currentIndex();
+    if (index < 0 || index >= count())
+        return;
+
+    QWidget *widget = this->widget(index);
+    if (WebView *tab = qobject_cast<WebView*>(widget))
+        tab->reload();
+}
+
+void TabBar::reloadTab()
+{
+    if (QAction *action = qobject_cast<QAction*>(sender())) {
+        int index = action->data().toInt();
+        emit reloadTab(index);
+    }
+}
+
+TabWidget::TabWidget(QWidget *parent)
+    : QTabWidget(parent)
+    , m_recentlyClosedTabsAction(0)
+    , m_newTabAction(0)
+    , m_closeTabAction(0)
+    , m_nextTabAction(0)
+    , m_previousTabAction(0)
+    , m_recentlyClosedTabsMenu(0)
+    , m_lineEditCompleter(0)
+    , m_lineEdits(0)
+    , m_tabBar(new TabBar(this))
+{
+    setElideMode(Qt::ElideRight);
+
+    connect(m_tabBar, SIGNAL(newTab()), this, SLOT(newTab()));
+    connect(m_tabBar, SIGNAL(closeTab(int)), this, SLOT(closeTab(int)));
+    connect(m_tabBar, SIGNAL(cloneTab(int)), this, SLOT(cloneTab(int)));
+    connect(m_tabBar, SIGNAL(closeOtherTabs(int)), this, SLOT(closeOtherTabs(int)));
+    connect(m_tabBar, SIGNAL(reloadTab(int)), this, SLOT(reloadTab(int)));
+    connect(m_tabBar, SIGNAL(reloadAllTabs()), this, SLOT(reloadAllTabs()));
+    connect(m_tabBar, SIGNAL(tabMoved(int, int)), this, SLOT(moveTab(int, int)));
+    setTabBar(m_tabBar);
+    setDocumentMode(true);
+
+    // Actions
+    m_newTabAction = new QAction(QIcon(QLatin1String(":addtab.png")), tr("New &Tab"), this);
+    m_newTabAction->setShortcuts(QKeySequence::AddTab);
+    m_newTabAction->setIconVisibleInMenu(false);
+    connect(m_newTabAction, SIGNAL(triggered()), this, SLOT(newTab()));
+
+    m_closeTabAction = new QAction(QIcon(QLatin1String(":closetab.png")), tr("&Close Tab"), this);
+    m_closeTabAction->setShortcuts(QKeySequence::Close);
+    m_closeTabAction->setIconVisibleInMenu(false);
+    connect(m_closeTabAction, SIGNAL(triggered()), this, SLOT(closeTab()));
+
+    m_nextTabAction = new QAction(tr("Show Next Tab"), this);
+    QList<QKeySequence> shortcuts;
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_BraceRight));
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_PageDown));
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_BracketRight));
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_Less));
+    m_nextTabAction->setShortcuts(shortcuts);
+    connect(m_nextTabAction, SIGNAL(triggered()), this, SLOT(nextTab()));
+
+    m_previousTabAction = new QAction(tr("Show Previous Tab"), this);
+    shortcuts.clear();
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_BraceLeft));
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_PageUp));
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_BracketLeft));
+    shortcuts.append(QKeySequence(Qt::CTRL | Qt::Key_Greater));
+    m_previousTabAction->setShortcuts(shortcuts);
+    connect(m_previousTabAction, SIGNAL(triggered()), this, SLOT(previousTab()));
+
+    m_recentlyClosedTabsMenu = new QMenu(this);
+    connect(m_recentlyClosedTabsMenu, SIGNAL(aboutToShow()),
+            this, SLOT(aboutToShowRecentTabsMenu()));
+    connect(m_recentlyClosedTabsMenu, SIGNAL(triggered(QAction *)),
+            this, SLOT(aboutToShowRecentTriggeredAction(QAction *)));
+    m_recentlyClosedTabsAction = new QAction(tr("Recently Closed Tabs"), this);
+    m_recentlyClosedTabsAction->setMenu(m_recentlyClosedTabsMenu);
+    m_recentlyClosedTabsAction->setEnabled(false);
+
+    connect(this, SIGNAL(currentChanged(int)),
+            this, SLOT(currentChanged(int)));
+
+    m_lineEdits = new QStackedWidget(this);
+}
+
+void TabWidget::clear()
+{
+    // clear the recently closed tabs
+    m_recentlyClosedTabs.clear();
+    // clear the line edit history
+    for (int i = 0; i < m_lineEdits->count(); ++i) {
+        QLineEdit *qLineEdit = lineEdit(i);
+        qLineEdit->setText(qLineEdit->text());
+    }
+}
+
+void TabWidget::moveTab(int fromIndex, int toIndex)
+{
+    QWidget *lineEdit = m_lineEdits->widget(fromIndex);
+    m_lineEdits->removeWidget(lineEdit);
+    m_lineEdits->insertWidget(toIndex, lineEdit);
+}
+
+void TabWidget::addWebAction(QAction *action, QWebPage::WebAction webAction)
+{
+    if (!action)
+        return;
+    m_actions.append(new WebActionMapper(action, webAction, this));
+}
+
+void TabWidget::currentChanged(int index)
+{
+    WebView *webView = this->webView(index);
+    if (!webView)
+        return;
+
+    Q_ASSERT(m_lineEdits->count() == count());
+
+    WebView *oldWebView = this->webView(m_lineEdits->currentIndex());
+    if (oldWebView) {
+        disconnect(oldWebView, SIGNAL(statusBarMessage(const QString&)),
+                this, SIGNAL(showStatusBarMessage(const QString&)));
+        disconnect(oldWebView->page(), SIGNAL(linkHovered(const QString&, const QString&, const QString&)),
+                this, SIGNAL(linkHovered(const QString&)));
+        disconnect(oldWebView, SIGNAL(loadProgress(int)),
+                this, SIGNAL(loadProgress(int)));
+    }
+
+    connect(webView, SIGNAL(statusBarMessage(const QString&)),
+            this, SIGNAL(showStatusBarMessage(const QString&)));
+    connect(webView->page(), SIGNAL(linkHovered(const QString&, const QString&, const QString&)),
+            this, SIGNAL(linkHovered(const QString&)));
+    connect(webView, SIGNAL(loadProgress(int)),
+            this, SIGNAL(loadProgress(int)));
+
+    for (int i = 0; i < m_actions.count(); ++i) {
+        WebActionMapper *mapper = m_actions[i];
+        mapper->updateCurrent(webView->page());
+    }
+    emit setCurrentTitle(webView->title());
+    m_lineEdits->setCurrentIndex(index);
+    emit loadProgress(webView->progress());
+    emit showStatusBarMessage(webView->lastStatusBarText());
+    if (webView->url().isEmpty())
+        m_lineEdits->currentWidget()->setFocus();
+    else
+        webView->setFocus();
+}
+
+QAction *TabWidget::newTabAction() const
+{
+    return m_newTabAction;
+}
+
+QAction *TabWidget::closeTabAction() const
+{
+    return m_closeTabAction;
+}
+
+QAction *TabWidget::recentlyClosedTabsAction() const
+{
+    return m_recentlyClosedTabsAction;
+}
+
+QAction *TabWidget::nextTabAction() const
+{
+    return m_nextTabAction;
+}
+
+QAction *TabWidget::previousTabAction() const
+{
+    return m_previousTabAction;
+}
+
+QWidget *TabWidget::lineEditStack() const
+{
+    return m_lineEdits;
+}
+
+QLineEdit *TabWidget::currentLineEdit() const
+{
+    return lineEdit(m_lineEdits->currentIndex());
+}
+
+WebView *TabWidget::currentWebView() const
+{
+    return webView(currentIndex());
+}
+
+QLineEdit *TabWidget::lineEdit(int index) const
+{
+    UrlLineEdit *urlLineEdit = qobject_cast<UrlLineEdit*>(m_lineEdits->widget(index));
+    if (urlLineEdit)
+        return urlLineEdit->lineEdit();
+    return 0;
+}
+
+WebView *TabWidget::webView(int index) const
+{
+    QWidget *widget = this->widget(index);
+    if (WebView *webView = qobject_cast<WebView*>(widget)) {
+        return webView;
+    } else {
+        // optimization to delay creating the first webview
+        if (count() == 1) {
+            TabWidget *that = const_cast<TabWidget*>(this);
+            that->setUpdatesEnabled(false);
+            that->newTab();
+            that->closeTab(0);
+            that->setUpdatesEnabled(true);
+            return currentWebView();
+        }
+    }
+    return 0;
+}
+
+int TabWidget::webViewIndex(WebView *webView) const
+{
+    int index = indexOf(webView);
+    return index;
+}
+
+WebView *TabWidget::newTab(bool makeCurrent)
+{
+    // line edit
+    UrlLineEdit *urlLineEdit = new UrlLineEdit;
+    QLineEdit *lineEdit = urlLineEdit->lineEdit();
+    if (!m_lineEditCompleter && count() > 0) {
+        HistoryCompletionModel *completionModel = new HistoryCompletionModel(this);
+        completionModel->setSourceModel(BrowserApplication::historyManager()->historyFilterModel());
+        m_lineEditCompleter = new QCompleter(completionModel, this);
+        // Should this be in Qt by default?
+        QAbstractItemView *popup = m_lineEditCompleter->popup();
+        QListView *listView = qobject_cast<QListView*>(popup);
+        if (listView)
+            listView->setUniformItemSizes(true);
+    }
+    lineEdit->setCompleter(m_lineEditCompleter);
+    connect(lineEdit, SIGNAL(returnPressed()), this, SLOT(lineEditReturnPressed()));
+    m_lineEdits->addWidget(urlLineEdit);
+    m_lineEdits->setSizePolicy(lineEdit->sizePolicy());
+
+    // optimization to delay creating the more expensive WebView, history, etc
+    if (count() == 0) {
+        QWidget *emptyWidget = new QWidget;
+        QPalette p = emptyWidget->palette();
+        p.setColor(QPalette::Window, palette().color(QPalette::Base));
+        emptyWidget->setPalette(p);
+        emptyWidget->setAutoFillBackground(true);
+        disconnect(this, SIGNAL(currentChanged(int)),
+            this, SLOT(currentChanged(int)));
+        addTab(emptyWidget, tr("(Untitled)"));
+        connect(this, SIGNAL(currentChanged(int)),
+            this, SLOT(currentChanged(int)));
+        return 0;
+    }
+
+    // webview
+    WebView *webView = new WebView;
+    urlLineEdit->setWebView(webView);
+    connect(webView, SIGNAL(loadStarted()),
+            this, SLOT(webViewLoadStarted()));
+    connect(webView, SIGNAL(loadFinished(bool)),
+            this, SLOT(webViewIconChanged()));
+    connect(webView, SIGNAL(iconChanged()),
+            this, SLOT(webViewIconChanged()));
+    connect(webView, SIGNAL(titleChanged(const QString &)),
+            this, SLOT(webViewTitleChanged(const QString &)));
+    connect(webView, SIGNAL(urlChanged(const QUrl &)),
+            this, SLOT(webViewUrlChanged(const QUrl &)));
+    connect(webView->page(), SIGNAL(windowCloseRequested()),
+            this, SLOT(windowCloseRequested()));
+    connect(webView->page(), SIGNAL(geometryChangeRequested(const QRect &)),
+            this, SIGNAL(geometryChangeRequested(const QRect &)));
+    connect(webView->page(), SIGNAL(printRequested(QWebFrame *)),
+            this, SIGNAL(printRequested(QWebFrame *)));
+    connect(webView->page(), SIGNAL(menuBarVisibilityChangeRequested(bool)),
+            this, SIGNAL(menuBarVisibilityChangeRequested(bool)));
+    connect(webView->page(), SIGNAL(statusBarVisibilityChangeRequested(bool)),
+            this, SIGNAL(statusBarVisibilityChangeRequested(bool)));
+    connect(webView->page(), SIGNAL(toolBarVisibilityChangeRequested(bool)),
+            this, SIGNAL(toolBarVisibilityChangeRequested(bool)));
+    addTab(webView, tr("(Untitled)"));
+    if (makeCurrent)
+        setCurrentWidget(webView);
+
+    // webview actions
+    for (int i = 0; i < m_actions.count(); ++i) {
+        WebActionMapper *mapper = m_actions[i];
+        mapper->addChild(webView->page()->action(mapper->webAction()));
+    }
+
+    if (count() == 1)
+        currentChanged(currentIndex());
+    emit tabsChanged();
+    return webView;
+}
+
+void TabWidget::reloadAllTabs()
+{
+    for (int i = 0; i < count(); ++i) {
+        QWidget *tabWidget = widget(i);
+        if (WebView *tab = qobject_cast<WebView*>(tabWidget)) {
+            tab->reload();
+        }
+    }
+}
+
+void TabWidget::lineEditReturnPressed()
+{
+    if (QLineEdit *lineEdit = qobject_cast<QLineEdit*>(sender())) {
+        emit loadPage(lineEdit->text());
+        if (m_lineEdits->currentWidget() == lineEdit)
+            currentWebView()->setFocus();
+    }
+}
+
+void TabWidget::windowCloseRequested()
+{
+    WebPage *webPage = qobject_cast<WebPage*>(sender());
+    WebView *webView = qobject_cast<WebView*>(webPage->view());
+    int index = webViewIndex(webView);
+    if (index >= 0) {
+        if (count() == 1)
+            webView->webPage()->mainWindow()->close();
+        else
+            closeTab(index);
+    }
+}
+
+void TabWidget::closeOtherTabs(int index)
+{
+    if (-1 == index)
+        return;
+    for (int i = count() - 1; i > index; --i)
+        closeTab(i);
+    for (int i = index - 1; i >= 0; --i)
+        closeTab(i);
+}
+
+// When index is -1 index chooses the current tab
+void TabWidget::cloneTab(int index)
+{
+    if (index < 0)
+        index = currentIndex();
+    if (index < 0 || index >= count())
+        return;
+    WebView *tab = newTab(false);
+    tab->setUrl(webView(index)->url());
+}
+
+// When index is -1 index chooses the current tab
+void TabWidget::closeTab(int index)
+{
+    if (index < 0)
+        index = currentIndex();
+    if (index < 0 || index >= count())
+        return;
+
+    bool hasFocus = false;
+    if (WebView *tab = webView(index)) {
+        if (tab->isModified()) {
+            QMessageBox closeConfirmation(tab);
+            closeConfirmation.setWindowFlags(Qt::Sheet);
+            closeConfirmation.setWindowTitle(tr("Do you really want to close this page?"));
+            closeConfirmation.setInformativeText(tr("You have modified this page and when closing it you would lose the modification.\n"
+                                                     "Do you really want to close this page?\n"));
+            closeConfirmation.setIcon(QMessageBox::Question);
+            closeConfirmation.addButton(QMessageBox::Yes);
+            closeConfirmation.addButton(QMessageBox::No);
+            closeConfirmation.setEscapeButton(QMessageBox::No);
+            if (closeConfirmation.exec() == QMessageBox::No)
+                return;
+        }
+        hasFocus = tab->hasFocus();
+
+        m_recentlyClosedTabsAction->setEnabled(true);
+        m_recentlyClosedTabs.prepend(tab->url());
+        if (m_recentlyClosedTabs.size() >= TabWidget::m_recentlyClosedTabsSize)
+            m_recentlyClosedTabs.removeLast();
+    }
+    QWidget *lineEdit = m_lineEdits->widget(index);
+    m_lineEdits->removeWidget(lineEdit);
+    lineEdit->deleteLater();
+    QWidget *webView = widget(index);
+    removeTab(index);
+    webView->deleteLater();
+    emit tabsChanged();
+    if (hasFocus && count() > 0)
+        currentWebView()->setFocus();
+    if (count() == 0)
+        emit lastTabClosed();
+}
+
+void TabWidget::webViewLoadStarted()
+{
+    WebView *webView = qobject_cast<WebView*>(sender());
+    int index = webViewIndex(webView);
+    if (-1 != index) {
+        QIcon icon(QLatin1String(":loading.gif"));
+        setTabIcon(index, icon);
+    }
+}
+
+void TabWidget::webViewIconChanged()
+{
+    WebView *webView = qobject_cast<WebView*>(sender());
+    int index = webViewIndex(webView);
+    if (-1 != index) {
+        QIcon icon = BrowserApplication::instance()->icon(webView->url());
+        setTabIcon(index, icon);
+    }
+}
+
+void TabWidget::webViewTitleChanged(const QString &title)
+{
+    WebView *webView = qobject_cast<WebView*>(sender());
+    int index = webViewIndex(webView);
+    if (-1 != index) {
+        setTabText(index, title);
+    }
+    if (currentIndex() == index)
+        emit setCurrentTitle(title);
+    BrowserApplication::historyManager()->updateHistoryItem(webView->url(), title);
+}
+
+void TabWidget::webViewUrlChanged(const QUrl &url)
+{
+    WebView *webView = qobject_cast<WebView*>(sender());
+    int index = webViewIndex(webView);
+    if (-1 != index) {
+        m_tabBar->setTabData(index, url);
+    }
+    emit tabsChanged();
+}
+
+void TabWidget::aboutToShowRecentTabsMenu()
+{
+    m_recentlyClosedTabsMenu->clear();
+    for (int i = 0; i < m_recentlyClosedTabs.count(); ++i) {
+        QAction *action = new QAction(m_recentlyClosedTabsMenu);
+        action->setData(m_recentlyClosedTabs.at(i));
+        QIcon icon = BrowserApplication::instance()->icon(m_recentlyClosedTabs.at(i));
+        action->setIcon(icon);
+        action->setText(m_recentlyClosedTabs.at(i).toString());
+        m_recentlyClosedTabsMenu->addAction(action);
+    }
+}
+
+void TabWidget::aboutToShowRecentTriggeredAction(QAction *action)
+{
+    QUrl url = action->data().toUrl();
+    loadUrlInCurrentTab(url);
+}
+
+void TabWidget::mouseDoubleClickEvent(QMouseEvent *event)
+{
+    if (!childAt(event->pos())
+            // Remove the line below when QTabWidget does not have a one pixel frame
+            && event->pos().y() < (tabBar()->y() + tabBar()->height())) {
+        newTab();
+        return;
+    }
+    QTabWidget::mouseDoubleClickEvent(event);
+}
+
+void TabWidget::contextMenuEvent(QContextMenuEvent *event)
+{
+    if (!childAt(event->pos())) {
+        m_tabBar->contextMenuRequested(event->pos());
+        return;
+    }
+    QTabWidget::contextMenuEvent(event);
+}
+
+void TabWidget::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::MidButton && !childAt(event->pos())
+            // Remove the line below when QTabWidget does not have a one pixel frame
+            && event->pos().y() < (tabBar()->y() + tabBar()->height())) {
+        QUrl url(QApplication::clipboard()->text(QClipboard::Selection));
+        if (!url.isEmpty() && url.isValid() && !url.scheme().isEmpty()) {
+            WebView *webView = newTab();
+            webView->setUrl(url);
+        }
+    }
+}
+
+void TabWidget::loadUrlInCurrentTab(const QUrl &url)
+{
+    WebView *webView = currentWebView();
+    if (webView) {
+        webView->loadUrl(url);
+        webView->setFocus();
+    }
+}
+
+void TabWidget::nextTab()
+{
+    int next = currentIndex() + 1;
+    if (next == count())
+        next = 0;
+    setCurrentIndex(next);
+}
+
+void TabWidget::previousTab()
+{
+    int next = currentIndex() - 1;
+    if (next < 0)
+        next = count() - 1;
+    setCurrentIndex(next);
+}
+
+static const qint32 TabWidgetMagic = 0xaa;
+
+QByteArray TabWidget::saveState() const
+{
+    int version = 1;
+    QByteArray data;
+    QDataStream stream(&data, QIODevice::WriteOnly);
+
+    stream << qint32(TabWidgetMagic);
+    stream << qint32(version);
+
+    QStringList tabs;
+    for (int i = 0; i < count(); ++i) {
+        if (WebView *tab = qobject_cast<WebView*>(widget(i))) {
+            tabs.append(tab->url().toString());
+        } else {
+            tabs.append(QString::null);
+        }
+    }
+    stream << tabs;
+    stream << currentIndex();
+    return data;
+}
+
+bool TabWidget::restoreState(const QByteArray &state)
+{
+    int version = 1;
+    QByteArray sd = state;
+    QDataStream stream(&sd, QIODevice::ReadOnly);
+    if (stream.atEnd())
+        return false;
+
+    qint32 marker;
+    qint32 v;
+    stream >> marker;
+    stream >> v;
+    if (marker != TabWidgetMagic || v != version)
+        return false;
+
+    QStringList openTabs;
+    stream >> openTabs;
+
+    for (int i = 0; i < openTabs.count(); ++i) {
+        if (i != 0)
+            newTab();
+        loadPage(openTabs.at(i));
+    }
+
+    int currentTab;
+    stream >> currentTab;
+    setCurrentIndex(currentTab);
+
+    return true;
+}
+
+WebActionMapper::WebActionMapper(QAction *root, QWebPage::WebAction webAction, QObject *parent)
+    : QObject(parent)
+    , m_currentParent(0)
+    , m_root(root)
+    , m_webAction(webAction)
+{
+    if (!m_root)
+        return;
+    connect(m_root, SIGNAL(triggered()), this, SLOT(rootTriggered()));
+    connect(root, SIGNAL(destroyed(QObject *)), this, SLOT(rootDestroyed()));
+    root->setEnabled(false);
+}
+
+void WebActionMapper::rootDestroyed()
+{
+    m_root = 0;
+}
+
+void WebActionMapper::currentDestroyed()
+{
+    updateCurrent(0);
+}
+
+void WebActionMapper::addChild(QAction *action)
+{
+    if (!action)
+        return;
+    connect(action, SIGNAL(changed()), this, SLOT(childChanged()));
+}
+
+QWebPage::WebAction WebActionMapper::webAction() const
+{
+    return m_webAction;
+}
+
+void WebActionMapper::rootTriggered()
+{
+    if (m_currentParent) {
+        QAction *gotoAction = m_currentParent->action(m_webAction);
+        gotoAction->trigger();
+    }
+}
+
+void WebActionMapper::childChanged()
+{
+    if (QAction *source = qobject_cast<QAction*>(sender())) {
+        if (m_root
+            && m_currentParent
+            && source->parent() == m_currentParent) {
+            m_root->setChecked(source->isChecked());
+            m_root->setEnabled(source->isEnabled());
+        }
+    }
+}
+
+void WebActionMapper::updateCurrent(QWebPage *currentParent)
+{
+    if (m_currentParent)
+        disconnect(m_currentParent, SIGNAL(destroyed(QObject *)),
+                   this, SLOT(currentDestroyed()));
+
+    m_currentParent = currentParent;
+    if (!m_root)
+        return;
+    if (!m_currentParent) {
+        m_root->setEnabled(false);
+        m_root->setChecked(false);
+        return;
+    }
+    QAction *source = m_currentParent->action(m_webAction);
+    m_root->setChecked(source->isChecked());
+    m_root->setEnabled(source->isEnabled());
+    connect(m_currentParent, SIGNAL(destroyed(QObject *)),
+            this, SLOT(currentDestroyed()));
+}
+