Qt 5.7 | Qt Designer Manual | Container Extension Example | multipagewidgetplugin.cpp Example File

Qt 5.7.1 Reference Documentation

# multipagewidgetplugin.cpp Example File

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, &MultiPageWidget::currentIndexChanged,
                  this, &MultiPageWidgetPlugin::currentIndexChanged);
          connect(widget, &MultiPageWidget::pageTitleChanged,
                  this, &MultiPageWidgetPlugin::pageTitleChanged);
          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("\
      <ui language=\"c++\">\
          <widget class=\"MultiPageWidget\" name=\"multipagewidget\">\
              <widget class=\"QWidget\" name=\"page\" />\
          </widget>\
          <customwidgets>\
              <customwidget>\
                  <class>MultiPageWidget</class>\
                  <extends>QWidget</extends>\
                  <addpagemethod>addPage</addpagemethod>\
              </customwidget>\
          </customwidgets>\
      </ui>");
      }

      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);
              }
          }
      }