qdesigner_resource.cpp

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    } else {
        core()->metaDataBase()->add(w);
    }

    w->setWindowFlags(w->windowFlags() & ~Qt::Window);
    // Make sure it is non-modal (for example, KDialog calls setModal(true) in the constructor).
    w->setWindowModality(Qt::NonModal);

    return w;
}

QLayout *QDesignerResource::createLayout(const QString &layoutName, QObject *parent, const QString &name)
{
    QWidget *layoutBase = 0;
    QLayout *layout = qobject_cast<QLayout*>(parent);

    if (parent->isWidgetType())
        layoutBase = static_cast<QWidget*>(parent);
    else {
        Q_ASSERT( layout != 0 );
        layoutBase = layout->parentWidget();
    }

    LayoutInfo::Type layoutType = LayoutInfo::Grid;
    if (layoutName == QLatin1String("QVBoxLayout"))
        layoutType = LayoutInfo::VBox;
    else if (layoutName == QLatin1String("QHBoxLayout"))
        layoutType = LayoutInfo::HBox;
    else if (layoutName == QLatin1String("QStackedLayout"))
        layoutType = LayoutInfo::Stacked;

    QLayout *lay = core()->widgetFactory()->createLayout(layoutBase, layout, layoutType);
    if (lay != 0)
        changeObjectName(lay, name);

    return lay;
}

// save
DomWidget *QDesignerResource::createDom(QWidget *widget, DomWidget *ui_parentWidget, bool recursive)
{
    QDesignerMetaDataBaseItemInterface *item = core()->metaDataBase()->item(widget);
    if (!item)
        return 0;

    if (qobject_cast<Spacer*>(widget) && m_copyWidget == false) {
        ++m_topLevelSpacerCount;
        return 0;
    }

    QDesignerWidgetDataBaseItemInterface *widgetInfo =  0;
    const int widgetInfoIndex = core()->widgetDataBase()->indexOfObject(widget, false);
    if (widgetInfoIndex != -1) {
        widgetInfo = core()->widgetDataBase()->item(widgetInfoIndex);

        if (widgetInfo->isCustom()) {
            if (widgetInfo->extends().isEmpty()) {
                const QMetaObject *mo = widget->metaObject()->superClass();
                while (mo != 0) {
                    if (core()->widgetDataBase()->indexOfClassName(QLatin1String(mo->className())) != -1) {
                        widgetInfo->setExtends(QLatin1String(mo->className()));
                        break;
                    }
                    mo = mo->superClass();
                }
            }
            m_usedCustomWidgets.insert(widgetInfo, true);
        }
    }

    DomWidget *w = 0;

    if (QDesignerTabWidget *tabWidget = qobject_cast<QDesignerTabWidget*>(widget))
        w = saveWidget(tabWidget, ui_parentWidget);
    else if (QDesignerStackedWidget *stackedWidget = qobject_cast<QDesignerStackedWidget*>(widget))
        w = saveWidget(stackedWidget, ui_parentWidget);
    else if (QDesignerToolBox *toolBox = qobject_cast<QDesignerToolBox*>(widget))
        w = saveWidget(toolBox, ui_parentWidget);
    else if (QToolBar *toolBar = qobject_cast<QToolBar*>(widget))
        w = saveWidget(toolBar, ui_parentWidget);
    else if (QDesignerDockWidget *dockWidget = qobject_cast<QDesignerDockWidget*>(widget))
        w = saveWidget(dockWidget, ui_parentWidget);
    else if (QDesignerContainerExtension *container = qt_extension<QDesignerContainerExtension*>(core()->extensionManager(), widget))
        w = saveWidget(widget, container, ui_parentWidget);
    else
        w = QAbstractFormBuilder::createDom(widget, ui_parentWidget, recursive);

    Q_ASSERT( w != 0 );

    if (!qobject_cast<QLayoutWidget*>(widget) && w->attributeClass() == QLatin1String("QWidget")) {
        w->setAttributeNative(true);
    }

    const QString className = w->attributeClass();
    if (m_internal_to_qt.contains(className))
        w->setAttributeClass(m_internal_to_qt.value(className));

    w->setAttributeName(widget->objectName());

    if (isPromoted( core(), widget)) { // is promoted?
        Q_ASSERT(widgetInfo != 0);

        w->setAttributeName(widget->objectName());
        w->setAttributeClass(widgetInfo->name());

        QList<DomProperty*> prop_list = w->elementProperty();
        foreach (DomProperty *prop, prop_list) {
            if (prop->attributeName() == QLatin1String("geometry")) {
                if (DomRect *rect = prop->elementRect()) {
                    rect->setElementX(widget->x());
                    rect->setElementY(widget->y());
                }
                break;
            }
        }
    } else if (widgetInfo != 0 && m_usedCustomWidgets.contains(widgetInfo)) {
        if (widgetInfo->name() != w->attributeClass())
            w->setAttributeClass(widgetInfo->name());
    }
    addExtensionDataToDOM(this, core(), w, widget);

    addUserDefinedScripts(widget, w);
    return w;
}

DomLayout *QDesignerResource::createDom(QLayout *layout, DomLayout *ui_parentLayout, DomWidget *ui_parentWidget)
{
    QDesignerMetaDataBaseItemInterface *item = core()->metaDataBase()->item(layout);

    if (item == 0) {
        layout = qFindChild<QLayout*>(layout);
        // refresh the meta database item
        item = core()->metaDataBase()->item(layout);
    }

    if (item == 0) {
        // nothing to do.
        return 0;
    }

    if (qobject_cast<QSplitter*>(layout->parentWidget()) != 0) {
        // nothing to do.
        return 0;
    }

    m_chain.push(layout);

    DomLayout *l = QAbstractFormBuilder::createDom(layout, ui_parentLayout, ui_parentWidget);
    Q_ASSERT(l != 0);

    m_chain.pop();

    return l;
}

DomLayoutItem *QDesignerResource::createDom(QLayoutItem *item, DomLayout *ui_layout, DomWidget *ui_parentWidget)
{
    DomLayoutItem *ui_item = 0;

    if (Spacer *s = qobject_cast<Spacer*>(item->widget())) {
        if (!core()->metaDataBase()->item(s))
            return 0;

        DomSpacer *spacer = new DomSpacer();
        const QList<DomProperty*> properties = computeProperties(item->widget());
        // ### filter the properties
        spacer->setElementProperty(properties);

        ui_item = new DomLayoutItem();
        ui_item->setElementSpacer(spacer);
        m_laidout.insert(item->widget(), true);
    } else if (QLayoutWidget *layoutWidget = qobject_cast<QLayoutWidget*>(item->widget())) {
        Q_ASSERT(layoutWidget->layout());
        DomLayout *l = createDom(layoutWidget->layout(), ui_layout, ui_parentWidget);
        ui_item = new DomLayoutItem();
        ui_item->setElementLayout(l);
        m_laidout.insert(item->widget(), true);
    } else if (!item->spacerItem()) { // we use spacer as fake item in the Designer
        ui_item = QAbstractFormBuilder::createDom(item, ui_layout, ui_parentWidget);
    } else {
        return 0;
    }

    if (m_chain.size() && item->widget()) {
        if (QGridLayout *grid = qobject_cast<QGridLayout*>(m_chain.top())) {
            const int index = Utils::indexOfWidget(grid, item->widget());

            int row, column, rowspan, colspan;
            grid->getItemPosition(index, &row, &column, &rowspan, &colspan);
            ui_item->setAttributeRow(row);
            ui_item->setAttributeColumn(column);

            if (colspan != 1)
                ui_item->setAttributeColSpan(colspan);

            if (rowspan != 1)
                ui_item->setAttributeRowSpan(rowspan);
        }
    }

    return ui_item;
}

void QDesignerResource::addCustomWidgetsToWidgetDatabase(DomCustomWidgetList& custom_widget_list)
{
    // Perform one iteration of adding the custom widgets to the database,
    // looking up the base class and inheriting its data.
    // Remove the succeeded custom widgets from the list.
    // Classes whose base class could not be found are left in the list.
    QDesignerWidgetDataBaseInterface *db = m_formWindow->core()->widgetDataBase();
    for (int i=0; i < custom_widget_list.size(); ) {
        bool classInserted = false;
        DomCustomWidget *custom_widget = custom_widget_list[i];
        const QString customClassName = custom_widget->elementClass();
        const QString base_class = custom_widget->elementExtends();
        QString includeFile;
        IncludeType includeType = IncludeLocal;
        if (const DomHeader *header = custom_widget->elementHeader()) {
            includeFile = header->text();
            if (header->hasAttributeLocation() && header->attributeLocation() == QLatin1String("global"))
                includeType = IncludeGlobal;
        }
        const bool domIsContainer = custom_widget->elementContainer();
        // Append a new item
        if (base_class.isEmpty()) {
            WidgetDataBaseItem *item = new WidgetDataBaseItem(customClassName);
            item->setPromoted(false);
            item->setGroup(QApplication::translate("Designer", "Custom Widgets"));
            item->setIncludeFile(buildIncludeFile(includeFile, includeType));
            item->setContainer(domIsContainer);
            item->setCustom(true);
            db->append(item);
            custom_widget_list.removeAt(i);
            classInserted = true;
        } else {
            // Create a new entry cloned from base class. Note that this will ignore existing
            // classes, eg, plugin custom widgets.
            QDesignerWidgetDataBaseItemInterface *item =
                appendDerived(db, customClassName, QApplication::translate("Designer", "Promoted Widgets"),
                              base_class,
                              buildIncludeFile(includeFile, includeType),
                              true,true);
            // Ok, base class found.
            if (item) {
                // Hack to accommodate for old UI-files in which "contains" is not set properly:
                // Apply "contains" from DOM only if true (else, eg classes from QFrame might not accept
                // dropping child widgets on them as container=false). This also allows for
                // QWidget-derived stacked pages.
                if (domIsContainer)
                    item->setContainer(domIsContainer);
                custom_widget_list.removeAt(i);
                classInserted = true;
            }
        }
        // Skip failed item.
        if (!classInserted)
            i++;
    }

}
void QDesignerResource::createCustomWidgets(DomCustomWidgets *dom_custom_widgets)
{
    if (dom_custom_widgets == 0)
        return;
    DomCustomWidgetList custom_widget_list = dom_custom_widgets->elementCustomWidget();
    // Attempt to insert each item derived from its base class.
    // This should at most require two iterations in the event that the classes are out of order
    // (derived first, max depth: promoted custom plugin = 2)
    for (int iteration = 0;  iteration < 2;  iteration++) {
        addCustomWidgetsToWidgetDatabase(custom_widget_list);
        if (custom_widget_list.empty())
            return;
    }
    // Oops, there are classes left whose base class could not be found.
    // Default them to QWidget with warnings.
    const QString fallBackBaseClass = QLatin1String("QWidget");
    for (int i=0; i < custom_widget_list.size(); i++ ) {
        DomCustomWidget *custom_widget = custom_widget_list[i];
        const QString customClassName = custom_widget->elementClass();
        const QString base_class = custom_widget->elementExtends();
        qDebug() << "** WARNING The base class " << base_class << " of the custom widget class " << customClassName 
            << " could not be found. Defaulting to " << fallBackBaseClass << '.';
        custom_widget->setElementExtends(fallBackBaseClass);
    }
    // One more pass.
    addCustomWidgetsToWidgetDatabase(custom_widget_list);
    Q_ASSERT(custom_widget_list.empty());
}

DomTabStops *QDesignerResource::saveTabStops()
{
    QDesignerMetaDataBaseItemInterface *item = core()->metaDataBase()->item(m_formWindow);
    Q_ASSERT(item);

    QStringList tabStops;
    foreach (QWidget *widget, item->tabOrder()) {
        if (m_formWindow->mainContainer()->isAncestorOf(widget))
            tabStops.append(widget->objectName());
    }

    if (tabStops.count()) {
        DomTabStops *dom = new DomTabStops;
        dom->setElementTabStop(tabStops);
        return dom;
    }

    return 0;
}

void QDesignerResource::applyTabStops(QWidget *widget, DomTabStops *tabStops)
{
    if (!tabStops)
        return;

    QList<QWidget*> tabOrder;
    foreach (QString widgetName, tabStops->elementTabStop()) {
        if (QWidget *w = qFindChild<QWidget*>(widget, widgetName)) {
            tabOrder.append(w);
        }
    }

    QDesignerMetaDataBaseItemInterface *item = core()->metaDataBase()->item(m_formWindow);
    Q_ASSERT(item);
    item->setTabOrder(tabOrder);
}

DomWidget *QDesignerResource::saveWidget(QWidget *widget, QDesignerContainerExtension *container, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(widget, ui_parentWidget, false);
    QList<DomWidget*> ui_widget_list;

    for (int i=0; i<container->count(); ++i) {
        QWidget *page = container->widget(i);
        Q_ASSERT(page);

        DomWidget *ui_page = createDom(page, ui_widget);