Long live Qt!

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diff --git a/tools/designer/src/lib/shared/qdesigner_integration.cpp b/tools/designer/src/lib/shared/qdesigner_integration.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdesigner_integration_p.h"
+#include "qdesigner_propertycommand_p.h"
+#include "qdesigner_propertyeditor_p.h"
+#include "qdesigner_objectinspector_p.h"
+#include "widgetdatabase_p.h"
+#include "pluginmanager_p.h"
+#include "widgetfactory_p.h"
+#include "qdesigner_widgetbox_p.h"
+#include "qtgradientmanager.h"
+#include "qtgradientutils.h"
+#include "qtresourcemodel_p.h"
+
+// sdk
+#include <QtDesigner/QDesignerFormEditorInterface>
+#include <QtDesigner/QDesignerFormWindowInterface>
+#include <QtDesigner/QDesignerFormWindowManagerInterface>
+#include <QtDesigner/QDesignerFormWindowCursorInterface>
+#include <QtDesigner/QDesignerActionEditorInterface>
+#include <QtDesigner/QDesignerWidgetBoxInterface>
+#include <QtDesigner/QExtensionManager>
+#include <QtDesigner/QDesignerResourceBrowserInterface>
+#include <QtDesigner/QDesignerPropertySheetExtension>
+
+#include <QtCore/QVariant>
+#include <QtCore/QFile>
+#include <QtCore/QDir>
+
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace qdesigner_internal {
+
+// ---------------- DesignerIntegrationPrivate
+class QDesignerIntegrationPrivate {
+public:
+    QDesignerIntegrationPrivate()
+        : m_gradientManager(0),
+          m_fileWatcherBehaviour(QDesignerIntegration::PromptAndReload),
+          m_resourceEditingEnabled(true),
+          m_slotNavigationEnabled(false)
+    {}
+
+    QString m_gradientsPath;
+    QtGradientManager *m_gradientManager;
+    QDesignerIntegration::ResourceFileWatcherBehaviour m_fileWatcherBehaviour;
+    bool m_resourceEditingEnabled;
+    bool m_slotNavigationEnabled;
+};
+
+// -------------- QDesignerIntegration
+// As of 4.4, the header will be distributed with the Eclipse plugin.
+
+QDesignerIntegration::QDesignerIntegration(QDesignerFormEditorInterface *core, QObject *parent) :
+    QDesignerIntegrationInterface(core, parent),
+    m_d(new QDesignerIntegrationPrivate)
+{
+    initialize();
+}
+
+QDesignerIntegration::~QDesignerIntegration()
+{
+    QFile f(m_d->m_gradientsPath);
+    if (f.open(QIODevice::WriteOnly)) {
+        f.write(QtGradientUtils::saveState(m_d->m_gradientManager).toUtf8());
+        f.close();
+    }
+    delete m_d;
+}
+
+void QDesignerIntegration::initialize()
+{
+    //
+    // integrate the `Form Editor component'
+    //
+
+    // Extensions
+    if (QDesignerPropertyEditor *designerPropertyEditor= qobject_cast<QDesignerPropertyEditor *>(core()->propertyEditor())) {
+        connect(designerPropertyEditor, SIGNAL(propertyValueChanged(QString, QVariant, bool)), this, SLOT(updateProperty(QString, QVariant, bool)));
+        connect(designerPropertyEditor, SIGNAL(resetProperty(QString)), this, SLOT(resetProperty(QString)));
+        connect(designerPropertyEditor, SIGNAL(addDynamicProperty(QString,QVariant)),
+                this, SLOT(addDynamicProperty(QString,QVariant)));
+        connect(designerPropertyEditor, SIGNAL(removeDynamicProperty(QString)),
+                this, SLOT(removeDynamicProperty(QString)));
+    } else {
+        connect(core()->propertyEditor(), SIGNAL(propertyChanged(QString,QVariant)),
+                this, SLOT(updatePropertyPrivate(QString,QVariant)));
+    }
+
+    connect(core()->formWindowManager(), SIGNAL(formWindowAdded(QDesignerFormWindowInterface*)),
+            this, SLOT(setupFormWindow(QDesignerFormWindowInterface*)));
+
+    connect(core()->formWindowManager(), SIGNAL(activeFormWindowChanged(QDesignerFormWindowInterface*)),
+            this, SLOT(updateActiveFormWindow(QDesignerFormWindowInterface*)));
+
+    m_d->m_gradientManager = new QtGradientManager(this);
+    core()->setGradientManager(m_d->m_gradientManager);
+
+    QString designerFolder = QDir::homePath();
+    designerFolder += QDir::separator();
+    designerFolder += QLatin1String(".designer");
+    m_d->m_gradientsPath = designerFolder;
+    m_d->m_gradientsPath += QDir::separator();
+    m_d->m_gradientsPath += QLatin1String("gradients.xml");
+
+    QFile f(m_d->m_gradientsPath);
+    if (f.open(QIODevice::ReadOnly)) {
+        QtGradientUtils::restoreState(m_d->m_gradientManager, QString::fromAscii(f.readAll()));
+        f.close();
+    } else {
+        QFile defaultGradients(QLatin1String(":/trolltech/designer/defaultgradients.xml"));
+        if (defaultGradients.open(QIODevice::ReadOnly)) {
+            QtGradientUtils::restoreState(m_d->m_gradientManager, QString::fromAscii(defaultGradients.readAll()));
+            defaultGradients.close();
+        }
+    }
+
+    if (WidgetDataBase *widgetDataBase = qobject_cast<WidgetDataBase*>(core()->widgetDataBase()))
+        widgetDataBase->grabStandardWidgetBoxIcons();
+}
+
+void QDesignerIntegration::updateProperty(const QString &name, const QVariant &value, bool enableSubPropertyHandling)
+{
+    QDesignerFormWindowInterface *formWindow = core()->formWindowManager()->activeFormWindow();
+    if (!formWindow)
+        return;
+
+    Selection selection;
+    getSelection(selection);
+    if (selection.empty())
+        return;
+
+    SetPropertyCommand *cmd = new SetPropertyCommand(formWindow);
+    // find a reference object to compare to and to find the right group
+    if (cmd->init(selection.selection(), name, value, propertyEditorObject(), enableSubPropertyHandling)) {
+        formWindow->commandHistory()->push(cmd);
+    } else {
+        delete cmd;
+        qDebug() << "Unable to set  property " << name << '.';
+    }
+
+    emit propertyChanged(formWindow, name, value);
+}
+
+void QDesignerIntegration::updatePropertyPrivate(const QString &name, const QVariant &value)
+{
+    updateProperty(name, value, true);
+}
+
+void QDesignerIntegration::resetProperty(const QString &name)
+{
+    QDesignerFormWindowInterface *formWindow = core()->formWindowManager()->activeFormWindow();
+    if (!formWindow)
+        return;
+
+    Selection selection;
+    getSelection(selection);
+    if (selection.empty())
+        return;
+
+
+    ResetPropertyCommand *cmd = new ResetPropertyCommand(formWindow);
+    // find a reference object to find the right group
+    if (cmd->init(selection.selection(), name, propertyEditorObject())) {
+        formWindow->commandHistory()->push(cmd);
+    } else {
+        delete cmd;
+        qDebug() << "** WARNING Unable to reset property " << name << '.';
+    }
+}
+
+void QDesignerIntegration::addDynamicProperty(const QString &name, const QVariant &value)
+{
+    QDesignerFormWindowInterface *formWindow = core()->formWindowManager()->activeFormWindow();
+    if (!formWindow)
+        return;
+
+    Selection selection;
+    getSelection(selection);
+    if (selection.empty())
+        return;
+
+    AddDynamicPropertyCommand *cmd = new AddDynamicPropertyCommand(formWindow);
+    if (cmd->init(selection.selection(), propertyEditorObject(), name, value)) {
+        formWindow->commandHistory()->push(cmd);
+    } else {
+        delete cmd;
+        qDebug() <<  "** WARNING Unable to add dynamic property " << name << '.';
+    }
+}
+
+void QDesignerIntegration::removeDynamicProperty(const QString &name)
+{
+    QDesignerFormWindowInterface *formWindow = core()->formWindowManager()->activeFormWindow();
+    if (!formWindow)
+        return;
+
+    Selection selection;
+    getSelection(selection);
+    if (selection.empty())
+        return;
+
+    RemoveDynamicPropertyCommand *cmd = new RemoveDynamicPropertyCommand(formWindow);
+    if (cmd->init(selection.selection(), propertyEditorObject(), name)) {
+        formWindow->commandHistory()->push(cmd);
+    } else {
+        delete cmd;
+        qDebug() << "** WARNING Unable to remove dynamic property " << name << '.';
+    }
+
+}
+
+
+void QDesignerIntegration::updateActiveFormWindow(QDesignerFormWindowInterface *formWindow)
+{
+    Q_UNUSED(formWindow);
+    updateSelection();
+}
+
+void QDesignerIntegration::setupFormWindow(QDesignerFormWindowInterface *formWindow)
+{
+    connect(formWindow, SIGNAL(selectionChanged()), this, SLOT(updateSelection()));
+    connect(formWindow, SIGNAL(activated(QWidget*)), this, SLOT(activateWidget(QWidget*)));
+}
+
+void QDesignerIntegration::updateGeometry()
+{
+}
+
+void QDesignerIntegration::updateSelection()
+{
+    QDesignerFormWindowInterface *formWindow = core()->formWindowManager()->activeFormWindow();
+    QWidget *selection = 0;
+
+    if (formWindow) {
+        selection = formWindow->cursor()->current();
+    }
+
+    if (QDesignerActionEditorInterface *actionEditor = core()->actionEditor())
+        actionEditor->setFormWindow(formWindow);
+
+    if (QDesignerPropertyEditorInterface *propertyEditor = core()->propertyEditor())
+        propertyEditor->setObject(selection);
+
+    if (QDesignerObjectInspectorInterface *objectInspector = core()->objectInspector())
+        objectInspector->setFormWindow(formWindow);
+
+}
+
+void QDesignerIntegration::activateWidget(QWidget *widget)
+{
+    Q_UNUSED(widget);
+}
+
+QWidget *QDesignerIntegration::containerWindow(QWidget *widget) const
+{
+    // Find the parent window to apply a geometry to.
+    while (widget) {
+        if (widget->isWindow())
+            break;
+        if (!qstrcmp(widget->metaObject()->className(), "QMdiSubWindow"))
+            break;
+
+        widget = widget->parentWidget();
+    }
+
+    return widget;
+}
+
+void QDesignerIntegration::getSelection(Selection &s)
+{
+    // Get multiselection from object inspector
+    if (QDesignerObjectInspector *designerObjectInspector = qobject_cast<QDesignerObjectInspector *>(core()->objectInspector())) {
+        designerObjectInspector->getSelection(s);
+        // Action editor puts actions that are not on the form yet
+        // into the property editor only.
+        if (s.empty())
+            if (QObject *object = core()->propertyEditor()->object())
+                s.objects.push_back(object);
+
+    } else {
+        // Just in case someone plugs in an old-style object inspector: Emulate selection
+        s.clear();
+        QDesignerFormWindowInterface *formWindow = core()->formWindowManager()->activeFormWindow();
+        if (!formWindow)
+            return;
+
+        QObject *object = core()->propertyEditor()->object();
+        if (object->isWidgetType()) {
+            QWidget *widget = static_cast<QWidget*>(object);
+            QDesignerFormWindowCursorInterface *cursor = formWindow->cursor();
+            if (cursor->isWidgetSelected(widget)) {
+                s.managed.push_back(widget);
+            } else {
+                s.unmanaged.push_back(widget);
+            }
+        } else {
+            s.objects.push_back(object);
+        }
+    }
+}
+
+QObject *QDesignerIntegration::propertyEditorObject()
+{
+    QDesignerPropertyEditorInterface *propertyEditor = core()->propertyEditor();
+    if (!propertyEditor)
+        return 0;
+    return propertyEditor->object();
+}
+
+// Load plugins into widget database and factory.
+void QDesignerIntegration::initializePlugins(QDesignerFormEditorInterface *formEditor)
+{
+    // load the plugins
+    WidgetDataBase *widgetDataBase = qobject_cast<WidgetDataBase*>(formEditor->widgetDataBase());
+    if (widgetDataBase) {
+        widgetDataBase->loadPlugins();
+    }
+
+    if (WidgetFactory *widgetFactory = qobject_cast<WidgetFactory*>(formEditor->widgetFactory())) {
+        widgetFactory->loadPlugins();
+    }
+
+    if (widgetDataBase) {
+        widgetDataBase->grabDefaultPropertyValues();
+    }
+}
+
+void QDesignerIntegration::updateCustomWidgetPlugins()
+{
+    QDesignerFormEditorInterface *formEditor = core();
+    if (QDesignerPluginManager *pm = formEditor->pluginManager())
+        pm->registerNewPlugins();
+
+    initializePlugins(formEditor);
+
+    // Do not just reload the last file as the WidgetBox merges the compiled-in resources
+    // and $HOME/.designer/widgetbox.xml. This would also double the scratchpad.
+    if (QDesignerWidgetBox *wb = qobject_cast<QDesignerWidgetBox*>(formEditor->widgetBox())) {
+        const QDesignerWidgetBox::LoadMode oldLoadMode = wb->loadMode();
+        wb->setLoadMode(QDesignerWidgetBox::LoadCustomWidgetsOnly);
+        wb->load();
+        wb->setLoadMode(oldLoadMode);
+    }
+}
+
+void QDesignerIntegration::emitObjectNameChanged(QDesignerFormWindowInterface *formWindow, QObject *object, const QString &newName, const QString &oldName)
+{
+    emit objectNameChanged(formWindow, object, newName, oldName);
+}
+
+void QDesignerIntegration::emitNavigateToSlot(const QString &objectName,
+                                              const QString &signalSignature,
+                                              const QStringList &parameterNames)
+{
+     emit navigateToSlot(objectName, signalSignature, parameterNames);
+}
+
+void QDesignerIntegration::emitNavigateToSlot(const QString &slotSignature)
+{
+    emit navigateToSlot(slotSignature);
+}
+
+void QDesignerIntegration::requestHelp(const QDesignerFormEditorInterface *core, const QString &manual, const QString &document)
+{
+    if (QDesignerIntegration *di = qobject_cast<QDesignerIntegration *>(core->integration()))
+        emit di->helpRequested(manual, document);
+}
+
+QDesignerResourceBrowserInterface *QDesignerIntegration::createResourceBrowser(QWidget *)
+{
+    return 0;
+}
+
+void QDesignerIntegration::setResourceFileWatcherBehaviour(ResourceFileWatcherBehaviour behaviour)
+{
+    m_d->m_fileWatcherBehaviour = behaviour;
+    core()->resourceModel()->setWatcherEnabled(behaviour != QDesignerIntegration::NoWatcher);
+}
+
+QDesignerIntegration::ResourceFileWatcherBehaviour QDesignerIntegration::resourceFileWatcherBehaviour() const
+{
+    return m_d->m_fileWatcherBehaviour;
+}
+
+void QDesignerIntegration::setResourceEditingEnabled(bool enable)
+{
+    m_d->m_resourceEditingEnabled = enable;
+}
+
+bool QDesignerIntegration::isResourceEditingEnabled() const
+{
+    return m_d->m_resourceEditingEnabled;
+}
+
+void QDesignerIntegration::setSlotNavigationEnabled(bool enable)
+{
+    m_d->m_slotNavigationEnabled = enable;
+}
+
+bool QDesignerIntegration::isSlotNavigationEnabled() const
+{
+    return m_d->m_slotNavigationEnabled;
+}
+
+static QString fixHelpClassName(const QString &className)
+{
+    // ### generalize using the Widget Data Base
+    if (className == QLatin1String("Line"))
+        return QLatin1String("QFrame");
+    if (className == QLatin1String("Spacer"))
+        return QLatin1String("QSpacerItem");
+    if (className == QLatin1String("QLayoutWidget"))
+        return QLatin1String("QLayout");
+    return className;
+}
+
+// Return class in which the property is defined
+static QString classForProperty(QDesignerFormEditorInterface *core,
+                                QObject *object,
+                                const QString &property)
+{
+    if (const QDesignerPropertySheetExtension *ps = qt_extension<QDesignerPropertySheetExtension *>(core->extensionManager(), object)) {
+        const int index = ps->indexOf(property);
+        if (index >= 0)
+            return ps->propertyGroup(index);
+    }
+    return QString();
+}
+
+QString QDesignerIntegration::contextHelpId() const
+{
+    QObject *currentObject = core()->propertyEditor()->object();
+    if (!currentObject)
+        return QString();
+    // Return a help index id consisting of "class::property"
+    QString className;
+    QString currentPropertyName = core()->propertyEditor()->currentPropertyName();    
+    if (!currentPropertyName.isEmpty())
+        className = classForProperty(core(), currentObject, currentPropertyName);
+    if (className.isEmpty()) {
+        currentPropertyName.clear(); // We hit on some fake property.
+        className = WidgetFactory::classNameOf(core(), currentObject);
+    }
+    QString helpId = fixHelpClassName(className);
+    if (!currentPropertyName.isEmpty()) {
+        helpId += QLatin1String("::");
+        helpId += currentPropertyName;
+    }
+    return helpId;
+}
+
+} // namespace qdesigner_internal
+
+QT_END_NAMESPACE