C++ WebTab类代码示例

void MainWindow::fileSaveAs()
{
    WebTab *w = currentTab();
    KUrl srcUrl = w->url();
    
    // First, try with suggested file name...
    QString name = w->page()->suggestedFileName();

    // Second, with KUrl fileName...
    if (name.isEmpty())
    {
        name = srcUrl.fileName();
    }
    
    // Last chance...
    if(name.isEmpty())
    {
        name = srcUrl.host() + QString(".html");
    }
    
    const QString destUrl = KFileDialog::getSaveFileName(name, QString(), this);
    if (destUrl.isEmpty()) 
        return;
    
    KIO::Job *job = KIO::file_copy(srcUrl, KUrl(destUrl), -1, KIO::Overwrite);
    job->addMetaData("MaxCacheSize", "0");  // Don't store in http cache.
    job->addMetaData("cache", "cache");     // Use entry from cache if available.
    job->uiDelegate()->setAutoErrorHandlingEnabled(true);
}

void TabTreeView::addMenuActions(QMenu *menu, const QModelIndex &index) const
{
    if (!m_haveTreeModel) {
        return;
    }

    menu->addSeparator();
    QMenu *m = menu->addMenu(tr("Tab Tree"));

    if (index.isValid() && model()->rowCount(index) > 0) {
        QPersistentModelIndex pindex = index;
        m->addAction(tr("Close Tree"), this, [=]() {
            QVector<WebTab*> tabs;
            reverseTraverse(pindex, [&](const QModelIndex &index) {
                WebTab *tab = index.data(TabModel::WebTabRole).value<WebTab*>();
                if (tab) {
                    tabs.append(tab);
                }
            });
            for (WebTab *tab : qAsConst(tabs)) {
                tab->closeTab();
            }
        });
    }

    m->addSeparator();
    m->addAction(tr("Expand All"), this, &TabTreeView::expandAll);
    m->addAction(tr("Collapse All"), this, &TabTreeView::collapseAll);
}

void TabBar::updatePinnedTabCloseButton(int index)
{
    if (!validIndex(index)) {
        return;
    }

    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
    QAbstractButton* button = qobject_cast<QAbstractButton*>(tabButton(index, closeButtonPosition()));

    bool pinned = webTab && webTab->isPinned();

    if (pinned) {
        if (button) {
            button->hide();
        }
    }
    else {
        if (button) {
            button->show();
        }
        else {
            showCloseButton(index);
        }
    }
}

void TabBar::pinTab()
{
    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(m_clickedTab));

    if (webTab) {
        webTab->togglePinned();
    }
}

void TabBar::contextMenuEvent(QContextMenuEvent* event)
{
    int index = tabAt(event->pos());
    m_clickedTab = index;

    QMenu menu;
    menu.addAction(IconProvider::newTabIcon(), tr("&New tab"), m_window, SLOT(addTab()));
    menu.addSeparator();
    if (index != -1) {
        WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(m_clickedTab));
        if (!webTab) {
            return;
        }

        if (m_window->weView(m_clickedTab)->isLoading()) {
            menu.addAction(QIcon::fromTheme(QSL("process-stop")), tr("&Stop Tab"), this, SLOT(stopTab()));
        }
        else {
            menu.addAction(QIcon::fromTheme(QSL("view-refresh")), tr("&Reload Tab"), this, SLOT(reloadTab()));
        }

        menu.addAction(QIcon::fromTheme("tab-duplicate"), tr("&Duplicate Tab"), this, SLOT(duplicateTab()));

        if (count() > 1 && !webTab->isPinned()) {
            menu.addAction(QIcon::fromTheme("tab-detach"), tr("D&etach Tab"), this, SLOT(detachTab()));
        }

        menu.addAction(webTab->isPinned() ? tr("Un&pin Tab") : tr("&Pin Tab"), this, SLOT(pinTab()));
#if QT_VERSION >= QT_VERSION_CHECK(5,7,0)
        menu.addAction(webTab->isMuted() ? tr("Un&mute Tab") : tr("&Mute Tab"), this, SLOT(muteTab()));
#endif
        menu.addSeparator();
        menu.addAction(tr("Re&load All Tabs"), m_tabWidget, SLOT(reloadAllTabs()));
        menu.addAction(tr("&Bookmark This Tab"), this, SLOT(bookmarkTab()));
        menu.addAction(tr("Bookmark &All Tabs"), m_window, SLOT(bookmarkAllTabs()));
        menu.addSeparator();
        menu.addAction(m_window->action(QSL("Other/RestoreClosedTab")));
        menu.addSeparator();
        menu.addAction(tr("Close Ot&her Tabs"), this, SLOT(closeAllButCurrent()));
        menu.addAction(QIcon::fromTheme("window-close"), tr("Cl&ose"), this, SLOT(closeTab()));
        menu.addSeparator();
    }
    else {
        menu.addAction(tr("Reloa&d All Tabs"), m_tabWidget, SLOT(reloadAllTabs()));
        menu.addAction(tr("Bookmark &All Tabs"), m_window, SLOT(bookmarkAllTabs()));
        menu.addSeparator();
        menu.addAction(m_window->action(QSL("Other/RestoreClosedTab")));
    }

    m_window->action(QSL("Other/RestoreClosedTab"))->setEnabled(m_tabWidget->canRestoreTab());

    // Prevent choosing first option with double rightclick
    const QPoint pos = event->globalPos();
    QPoint p(pos.x(), pos.y() + 1);
    menu.exec(p);

    m_window->action(QSL("Other/RestoreClosedTab"))->setEnabled(true);
}

bool TabbedWebView::isCurrent()
{
    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(m_tabWidget->currentIndex()));
    if (!webTab) {
        return false;
    }

    return (webTab->view() == this);
}

void TabBar::bookmarkTab()
{
    TabbedWebView* view = m_window->weView(m_clickedTab);
    if (!view) {
        return;
    }

    WebTab* tab = view->webTab();

    m_window->addBookmark(tab->url(), tab->title());
}

void TabBar::bookmarkTab()
{
    TabbedWebView* view = p_QupZilla->weView(m_clickedTab);
    if (!view) {
        return;
    }

    WebTab* tab = view->webTab();

    p_QupZilla->addBookmark(tab->url(), tab->title(), tab->icon());
}

void TabBar::contextMenuRequested(const QPoint &position)
{
    int index = tabAt(position);
    m_clickedTab = index;

    QMenu menu;
    menu.addAction(QIcon(":/icons/menu/new-tab.png"), tr("&New tab"), p_QupZilla, SLOT(addTab()));
    menu.addSeparator();
    if (index != -1) {
        WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(m_clickedTab));
        if (!webTab) {
            return;
        }
        if (p_QupZilla->weView(m_clickedTab)->isLoading()) {
            menu.addAction(qIconProvider->standardIcon(QStyle::SP_BrowserStop), tr("&Stop Tab"), this, SLOT(stopTab()));
        }
        else {
            menu.addAction(qIconProvider->standardIcon(QStyle::SP_BrowserReload), tr("&Reload Tab"), this, SLOT(reloadTab()));
        }

        menu.addAction(tr("&Duplicate Tab"), this, SLOT(duplicateTab()));
        menu.addAction(webTab->isPinned() ? tr("Un&pin Tab") : tr("&Pin Tab"), this, SLOT(pinTab()));
        menu.addSeparator();
        menu.addAction(tr("Re&load All Tabs"), m_tabWidget, SLOT(reloadAllTabs()));
        menu.addAction(tr("&Bookmark This Tab"), this, SLOT(bookmarkTab()));
        menu.addAction(tr("Bookmark &All Tabs"), p_QupZilla, SLOT(bookmarkAllTabs()));
        menu.addSeparator();
        QAction* action = p_QupZilla->actionRestoreTab();
        action->setEnabled(m_tabWidget->canRestoreTab());
        menu.addAction(action);
        menu.addSeparator();
        menu.addAction(tr("Close Ot&her Tabs"), this, SLOT(closeAllButCurrent()));
        menu.addAction(QIcon::fromTheme("window-close"), tr("Cl&ose"), this, SLOT(closeTab()));
        menu.addSeparator();
    }
    else {
        menu.addAction(tr("Reloa&d All Tabs"), m_tabWidget, SLOT(reloadAllTabs()));
        menu.addAction(tr("Bookmark &All Ta&bs"), p_QupZilla, SLOT(bookmarkAllTabs()));
        menu.addSeparator();
        QAction* action = menu.addAction(QIcon::fromTheme("user-trash"), tr("Restore &Closed Tab"), m_tabWidget, SLOT(restoreClosedTab()));
        action->setEnabled(m_tabWidget->canRestoreTab());
    }

    // Prevent choosing first option with double rightclick
    const QPoint &pos = mapToGlobal(position);
    QPoint p(pos.x(), pos.y() + 1);
    menu.exec(p);

    p_QupZilla->actionRestoreTab()->setEnabled(true);
}

void TabTreeView::initView()
{
    // Restore expanded state
    expandAll();
    QModelIndex index = model()->index(0, 0);
    while (index.isValid()) {
        WebTab *tab = index.data(TabModel::WebTabRole).value<WebTab*>();
        if (tab) {
            setExpanded(index, tab->sessionData().value(m_expandedSessionKey, true).toBool());
        }
        index = indexBelow(index);
    }

    m_initializing = false;
}

void TabBar::updateCloseButton(int index)
{
    QAbstractButton* button = qobject_cast<QAbstractButton*>(tabButton(index, QTabBar::RightSide));
    if (!button) {
        return;
    }

    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
    if (webTab && webTab->isPinned()) {
        button->hide();
    }
    else {
        button->show();
    }
}

void TabBar::showCloseButton(int index)
{
    if (!validIndex(index)) {
        return;
    }

    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
    QAbstractButton* button = qobject_cast<QAbstractButton*>(tabButton(index, closeButtonPosition()));

    if (button || (webTab && webTab->isPinned())) {
        return;
    }

    insertCloseButton(index);
}

void TabBar::showCloseButton(int index)
{

    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
    if (webTab && webTab->isPinned()) {
        return;
    }

    CloseButton* button = (CloseButton*)tabButton(index, QTabBar::RightSide);
    if (!button) {
        return;
    }

    button->show();
}

void TabBar::showTabPreview()
{
    if (m_isFirstTimeOnTab)
        m_isFirstTimeOnTab = false;

    //delete previous tab preview
    delete m_previewPopup.data();
    m_previewPopup.clear();

    MainView *mv = qobject_cast<MainView *>(parent());

    WebTab *indexedTab = mv->webTab(m_currentTabPreviewIndex);
    WebTab *currentTab = mv->webTab(currentIndex());

    // check if view && currentView exist before using them :)
    if (!currentTab || !indexedTab)
        return;

    // no previews during load
    if (indexedTab->isPageLoading())
        return;

    // Make sure the hovered webtab match the current size
    // Only the active one is updated by window resize events
    indexedTab->resize(currentTab->size());

    m_previewPopup = new TabPreviewPopup(indexedTab , this);

    int tabWidth = tabSizeHint(m_currentTabPreviewIndex).width();
    int tabBarWidth = mv->size().width();
    int leftIndex = tabRect(m_currentTabPreviewIndex).x() + (tabRect(m_currentTabPreviewIndex).width() - tabWidth) / 2;
    int popupWidth = m_previewPopup.data()->thumbnailSize().width();

    // Center the popup if the tab width is bigger or smaller
    leftIndex += (tabWidth - popupWidth) / 2;

    if (leftIndex < 0)
    {
        leftIndex = 0;
    }
    else if (leftIndex + tabWidth > tabBarWidth)
    {
        leftIndex = tabBarWidth - tabWidth;
    }

    QPoint pos(leftIndex, tabRect(m_currentTabPreviewIndex).y() + tabRect(m_currentTabPreviewIndex).height());
    m_previewPopup.data()->show(mapToGlobal(pos));
}

QSize TabBar::tabSizeHint(int index) const
{
    QSize size = QTabBar::tabSizeHint(index);
    WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
    TabBar* tabBar = const_cast <TabBar*>(this);
    tabBar->m_adjustingLastTab = false;

    if (webTab && webTab->isPinned()) {
        size.setWidth(PINNED_TAB_WIDTH);
    }
    else {
        int availableWidth = width() - (PINNED_TAB_WIDTH * m_pinnedTabsCount) - m_tabWidget->buttonListTabs()->width() - m_tabWidget->buttonAddTab()->width();
        int normalTabsCount = count() - m_pinnedTabsCount;
        if (availableWidth >= MAXIMUM_TAB_WIDTH * normalTabsCount) {
            tabBar->m_normalTabWidth = MAXIMUM_TAB_WIDTH;
            size.setWidth(m_normalTabWidth);
        }
        else if (availableWidth < MINIMUM_TAB_WIDTH * normalTabsCount) {
            tabBar->m_normalTabWidth = MINIMUM_TAB_WIDTH;
            size.setWidth(m_normalTabWidth);
        }
        else {
            int maxWidthForTab = availableWidth / normalTabsCount;
            tabBar->m_normalTabWidth = maxWidthForTab;
            //Fill any empty space (we've got from rounding) with last tab
            if (index == count() - 1) {
                tabBar->m_lastTabWidth = (availableWidth - maxWidthForTab * normalTabsCount) + maxWidthForTab;
                tabBar->m_adjustingLastTab = true;
                size.setWidth(m_lastTabWidth);
            }
            else {
                tabBar->m_lastTabWidth = maxWidthForTab;
                size.setWidth(m_lastTabWidth);
            }
        }
    }

    if (index == count() - 1) {
        int xForAddTabButton = (PINNED_TAB_WIDTH * m_pinnedTabsCount) + (count() - m_pinnedTabsCount) * (m_normalTabWidth);
        if (m_adjustingLastTab) {
            xForAddTabButton += m_lastTabWidth - m_normalTabWidth;
        }
        emit tabBar->moveAddTabButton(xForAddTabButton);
    }

    return size;
}