- Qt 5.5
- Qt Designer Manual
- Container Extension Example
- multipagewidgetplugin.cpp Example File
- Qt 5.5.1 Reference Documentation

# multipagewidgetplugin.cpp Example File

containerextension/multipagewidgetplugin.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    #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);
            }
        }
    }