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multipagewidgetplugin.cpp Example File
^{designer/containerextension/multipagewidgetplugin.cpp}

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 #include <QtDesigner/QExtensionFactory>
 #include <QtDesigner/QExtensionManager>
 #include <QtDesigner/QDesignerFormEditorInterface>
 #include <QtDesigner/QDesignerFormWindowInterface>
 #include <QtDesigner/QDesignerContainerExtension>
 #include <QtDesigner/QDesignerPropertySheetExtension>

 #include <QIcon>
 #include <QtPlugin>

 #include "multipagewidget.h"
 #include "multipagewidgetplugin.h"
 #include "multipagewidgetextensionfactory.h"

 MultiPageWidgetPlugin::MultiPageWidgetPlugin(QObject *parent)
     :QObject(parent)
 {
     initialized = false;
 }

 QString MultiPageWidgetPlugin::name() const
 {
     return QLatin1String("MultiPageWidget");
 }

 QString MultiPageWidgetPlugin::group() const
 {
     return QLatin1String("Display Widgets [Examples]");
 }

 QString MultiPageWidgetPlugin::toolTip() const
 {
     return QString();
 }

 QString MultiPageWidgetPlugin::whatsThis() const
 {
     return QString();
 }

 QString MultiPageWidgetPlugin::includeFile() const
 {
     return QLatin1String("multipagewidget.h");
 }

 QIcon MultiPageWidgetPlugin::icon() const
 {
     return QIcon();
 }

 bool MultiPageWidgetPlugin::isContainer() const
 {
     return true;
 }

 QWidget *MultiPageWidgetPlugin::createWidget(QWidget *parent)
 {
     MultiPageWidget *widget = new MultiPageWidget(parent);
     connect(widget, SIGNAL(currentIndexChanged(int)),
             this, SLOT(currentIndexChanged(int)));
     connect(widget, SIGNAL(pageTitleChanged(const QString &)),
             this, SLOT(pageTitleChanged(const QString &)));
     return widget;
 }

 bool MultiPageWidgetPlugin::isInitialized() const
 {
     return initialized;
 }

 void MultiPageWidgetPlugin::initialize(QDesignerFormEditorInterface *formEditor)
 {
     if (initialized)
         return;

     QExtensionManager *manager = formEditor->extensionManager();
     QExtensionFactory *factory = new MultiPageWidgetExtensionFactory(manager);

     Q_ASSERT(manager != 0);
     manager->registerExtensions(factory, Q_TYPEID(QDesignerContainerExtension));

     initialized = true;
 }

 QString MultiPageWidgetPlugin::domXml() const
 {
     return QLatin1String("\
     <widget class=\"MultiPageWidget\" name=\"multipagewidget\">\
         <widget class=\"QWidget\" name=\"page\" />\
     </widget>\
     ");
 }

 void MultiPageWidgetPlugin::currentIndexChanged(int index)
 {
     Q_UNUSED(index);
     MultiPageWidget *widget = qobject_cast<MultiPageWidget*>(sender());
     if (widget) {
         QDesignerFormWindowInterface *form = QDesignerFormWindowInterface::findFormWindow(widget);
         if (form)
             form->emitSelectionChanged();
     }
 }

 void MultiPageWidgetPlugin::pageTitleChanged(const QString &title)
 {
     Q_UNUSED(title);
     MultiPageWidget *widget = qobject_cast<MultiPageWidget*>(sender());
     if (widget) {
         QWidget *page = widget->widget(widget->currentIndex());
         QDesignerFormWindowInterface *form;
         form = QDesignerFormWindowInterface::findFormWindow(widget);
         if (form) {
             QDesignerFormEditorInterface *editor = form->core();
             QExtensionManager *manager = editor->extensionManager();
             QDesignerPropertySheetExtension *sheet;
             sheet = qt_extension<QDesignerPropertySheetExtension*>(manager, page);
             const int propertyIndex = sheet->indexOf(QLatin1String("windowTitle"));
             sheet->setChanged(propertyIndex, true);
         }
     }
 }

 Q_EXPORT_PLUGIN2(containerextension, MultiPageWidgetPlugin)