Method DocumentSwitcherPlugin

plugins/documentswitcher/documentswitcherplugin.cpp:36–97

//TODO: Make the widget transparent

DocumentSwitcherPlugin::DocumentSwitcherPlugin(QObject* parent, const KPluginMetaData& metaData,
                                               const QVariantList& /*args*/)
    : KDevelop::IPlugin(QStringLiteral("kdevdocumentswitcher"), parent, metaData)
    , view(nullptr)
{
    setXMLFile(QStringLiteral("kdevdocumentswitcher.rc"));
    qCDebug(PLUGIN_DOCUMENTSWITCHER) << "Adding active mainwindow from constructor";

    KDevelop::IDocumentController *documentController = KDevelop::ICore::self()->documentController();
    for (KDevelop::IDocument *doc : documentController->openDocuments()) {
        documentOpened(doc);
    }

    // Signals to track last used documents.
    connect(documentController, &KDevelop::IDocumentController::documentOpened, this, &DocumentSwitcherPlugin::documentOpened);
    connect(documentController, &KDevelop::IDocumentController::documentActivated, this, &DocumentSwitcherPlugin::documentActivated);
    connect(documentController, &KDevelop::IDocumentController::documentClosed, this, &DocumentSwitcherPlugin::documentClosed);

#ifdef Q_OS_MACOS
    // Qt/Mac swaps the Ctrl and Meta (Command) keys by default, so that shortcuts defined as Ctrl+X
    // become the platform-standard Command+X . Ideally we would map the document switcher shortcut to
    // Control+Tab (and thus Qt::META|Qt::Key_Tab) everywhere because Command+Tab and Command+Shift+Tab
    // are reserved system shortcuts that bring up the application switcher. The Control+Tab shortcut is 
    // inoperable on Mac, so we resort to the Alt (Option) key, unless the AA_MacDontSwapCtrlAndMeta
    // attribute is set.
    const Qt::Modifier shortcutAccelerator = QCoreApplication::testAttribute(Qt::AA_MacDontSwapCtrlAndMeta) ? Qt::CTRL : Qt::ALT;
#else
    const Qt::Modifier shortcutAccelerator = Qt::CTRL;
#endif

    forwardAction = actionCollection()->addAction ( QStringLiteral( "last_used_views_forward" ) );
    forwardAction->setText(i18nc("@action", "Last Used Views"));
    forwardAction->setIcon( QIcon::fromTheme( QStringLiteral( "go-next-view-page") ) );
    actionCollection()->setDefaultShortcut( forwardAction, shortcutAccelerator | Qt::Key_Tab );
    forwardAction->setWhatsThis(i18nc("@info:whatsthis", "Opens a list to walk through the list of last used views."));
    forwardAction->setToolTip( i18nc("@info:tooltip", "Walk through the list of last used views"));
    connect( forwardAction, &QAction::triggered, this, &DocumentSwitcherPlugin::walkForward );

    backwardAction = actionCollection()->addAction ( QStringLiteral( "last_used_views_backward" ) );
    backwardAction->setText(i18nc("@action", "Last Used Views (Reverse)"));
    backwardAction->setIcon( QIcon::fromTheme( QStringLiteral( "go-previous-view-page") ) );
    actionCollection()->setDefaultShortcut( backwardAction, shortcutAccelerator | Qt::SHIFT | Qt::Key_Tab );
    backwardAction->setWhatsThis(i18nc("@info:whatsthis", "Opens a list to walk through the list of last used views in reverse."));
    backwardAction->setToolTip(i18nc("@info:tooltip", "Walk through the list of last used views"));
    connect( backwardAction, &QAction::triggered, this, &DocumentSwitcherPlugin::walkBackward );

    view = new DocumentSwitcherTreeView( this );
    view->setSelectionBehavior( QAbstractItemView::SelectRows );
    view->setSelectionMode( QAbstractItemView::SingleSelection );
    view->setUniformRowHeights( true );
    view->setTextElideMode( Qt::ElideMiddle );
    view->setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
    view->addAction( forwardAction );
    view->addAction( backwardAction );
    view->setHeaderHidden( true );
    view->setIndentation( 10 );
    connect( view, &QListView::pressed, this, &DocumentSwitcherPlugin::switchToClicked );
    connect( view, &QListView::activated, this, &DocumentSwitcherPlugin::itemActivated );