Pave the way for our UI delegation strategy.

Starting with the context Menus for QtQuick.
Add default UI delegates as a subproject. We allow ourselves to use
Qt Quick Controls there for in order to get a nice "out of the box"
experience for things like context menus, dialogs, etc while leaving
the door open for system embedders to override this.

Opting out of the deployment of these QML files is still very primitive
but can be done by passing WEBENGINE_CONFIG+=no_ui_delegates at qmake
time.

Customization of context menus could be done via a qml component, which
is probably best kept in experimental for now while we address its
shortcomings.

Change-Id: I0705b20d5ddd3bb010f9371b65a181c6b02a03e1
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

15 files changed, 697 insertions, 11 deletions

diff --git a/examples/quick/quicknanobrowser/ContextMenuExtras.qml b/examples/quick/quicknanobrowser/ContextMenuExtras.qml
new file mode 100644
index 000000000..cf54e9ba0
--- /dev/null
+++ b/examples/quick/quicknanobrowser/ContextMenuExtras.qml
@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module 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 Digia Plc and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.1
+import QtWebEngine.UIDelegates 1.0
+
+VisualItemModel {
+    MenuItem {
+        text: "An application specific entry"
+        onTriggered: console.log("Application specific action triggered")
+    }
+    Menu {
+        title: "Extras Submenu"
+        MenuItem {
+            text: "something"
+            onTriggered: console.log("something triggered")
+        }
+        MenuItem {
+            text: "something else"
+            enabled: false
+        }
+    }
+}
+
diff --git a/examples/quick/quicknanobrowser/quicknanobrowser.pro b/examples/quick/quicknanobrowser/quicknanobrowser.pro
index 2c4ae9080..3455f02e0 100644
--- a/examples/quick/quicknanobrowser/quicknanobrowser.pro
+++ b/examples/quick/quicknanobrowser/quicknanobrowser.pro
@@ -4,9 +4,11 @@ TARGET = quicknanobrowser
 macx: CONFIG -= app_bundle
 
 HEADERS = quickwindow.h
-SOURCES = quickwindow.cpp main.cpp
+SOURCES = quickwindow.cpp \
+          main.cpp
 
-OTHER_FILES += quickwindow.qml
+OTHER_FILES += ContextMenuExtras.qml \
+               quickwindow.qml
 
 RESOURCES += resources.qrc
 RESOURCES += ../../common/common_resources.qrc
diff --git a/examples/quick/quicknanobrowser/quickwindow.qml b/examples/quick/quicknanobrowser/quickwindow.qml
index b99b6ff25..0aff9e36a 100644
--- a/examples/quick/quicknanobrowser/quickwindow.qml
+++ b/examples/quick/quicknanobrowser/quickwindow.qml
@@ -38,7 +38,7 @@
 **
 ****************************************************************************/
 
-import QtQuick 2.0
+import QtQuick 2.1
 import QtWebEngine 1.0
 import QtWebEngine.experimental 1.0
 import QtQuick.Controls 1.0
@@ -177,6 +177,7 @@ ApplicationWindow {
                             window.adoptHandle(newViewHandle)
                         }
                     }
+                    extraContextMenuEntriesComponent: ContextMenuExtras {}
                 }
             }
         }
diff --git a/examples/quick/quicknanobrowser/resources.qrc b/examples/quick/quicknanobrowser/resources.qrc
index de8232440..5294b7ff6 100644
--- a/examples/quick/quicknanobrowser/resources.qrc
+++ b/examples/quick/quicknanobrowser/resources.qrc
@@ -1,5 +1,6 @@
 <!DOCTYPE RCC><RCC version="1.0">
-<qresource>
-    <file>quickwindow.qml</file>
-</qresource>
+    <qresource prefix="/">
+        <file>quickwindow.qml</file>
+        <file>ContextMenuExtras.qml</file>
+    </qresource>
 </RCC>
diff --git a/src/src.pro b/src/src.pro
index 59fcce66f..536fcad5c 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -17,6 +17,10 @@ SUBDIRS += core \
            webengine_plugin \
            webengine_experimental_plugin
 
+# FIXME: We probably want a bit more control over config options to tweak what to build/ship or not.
+# Another example of where this could be necessary is to make it easy to build proprietery codecs support.
+!contains(WEBENGINE_CONFIG, no_ui_delegates): SUBDIRS += webengine/ui
+
 qtHaveModule(widgets) {
     SUBDIRS += webenginewidgets
 }
diff --git a/src/webengine/api/qquickwebengineview.cpp b/src/webengine/api/qquickwebengineview.cpp
index ac2dc681e..1dcc2acd0 100644
--- a/src/webengine/api/qquickwebengineview.cpp
+++ b/src/webengine/api/qquickwebengineview.cpp
@@ -44,20 +44,29 @@
 
 #include "net/base/net_errors.h"
 #include "qquickwebengineloadrequest_p.h"
+#include "render_widget_host_view_qt_delegate_quick.h"
+#include "ui_delegates_manager.h"
 #include "web_contents_adapter.h"
 #include "web_engine_error.h"
-#include "render_widget_host_view_qt_delegate_quick.h"
 
+#include <QQmlEngine>
+#include <QQmlComponent>
+#include <QQmlContext>
+#include <QQmlProperty>
 #include <QScreen>
+#include <QStringBuilder>
 #include <QUrl>
 #include <QQmlEngine>
 
+#include <private/qqmlmetatype_p.h>
+
 QT_BEGIN_NAMESPACE
 
 QQuickWebEngineViewPrivate::QQuickWebEngineViewPrivate()
     : adapter(new WebContentsAdapter(qApp->property("QQuickWebEngineView_DisableHardwareAcceleration").toBool() ? SoftwareRenderingMode : HardwareAccelerationMode))
     , e(new QQuickWebEngineViewExperimental(this))
     , v(new QQuickWebEngineViewport(this))
+    , contextMenuExtraItems(0)
     , loadProgress(0)
     , inspectable(false)
     , m_isLoading(false)
@@ -94,6 +103,14 @@ QQuickWebEngineViewport *QQuickWebEngineViewPrivate::viewport() const
     return v.data();
 }
 
+UIDelegatesManager *QQuickWebEngineViewPrivate::ui()
+{
+    Q_Q(QQuickWebEngineView);
+    if (m_uIDelegatesManager.isNull())
+        m_uIDelegatesManager.reset(new UIDelegatesManager(q));
+    return m_uIDelegatesManager.data();
+}
+
 RenderWidgetHostViewQtDelegate *QQuickWebEngineViewPrivate::CreateRenderWidgetHostViewQtDelegate(RenderWidgetHostViewQtDelegateClient *client, RenderingMode mode)
 {
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 2, 0))
@@ -103,6 +120,63 @@ RenderWidgetHostViewQtDelegate *QQuickWebEngineViewPrivate::CreateRenderWidgetHo
     return new RenderWidgetHostViewQtDelegateQuickPainted(client);
 }
 
+bool QQuickWebEngineViewPrivate::contextMenuRequested(const WebEngineContextMenuData &data)
+{
+    Q_Q(QQuickWebEngineView);
+
+    QObject *menu = ui()->addMenu(0, QString(), data.pos);
+    if (!menu)
+        return false;
+
+    // Populate our menu
+    MenuItemHandler *item = 0;
+
+    if (data.selectedText.isEmpty()) {
+        item = new MenuItemHandler(menu);
+        QObject::connect(item, &MenuItemHandler::triggered, q, &QQuickWebEngineView::goBack);
+        ui()->addMenuItem(item, QObject::tr("Back"), QStringLiteral("go-previous"), q->canGoBack());
+
+        item = new MenuItemHandler(menu);
+        QObject::connect(item, &MenuItemHandler::triggered, q, &QQuickWebEngineView::goForward);
+        ui()->addMenuItem(item, QObject::tr("Forward"), QStringLiteral("go-next"), q->canGoForward());
+
+        item = new MenuItemHandler(menu);
+        QObject::connect(item, &MenuItemHandler::triggered, q, &QQuickWebEngineView::reload);
+        ui()->addMenuItem(item, QObject::tr("Reload"), QStringLiteral("view-refresh"));
+    } else {
+        item = new CopyMenuItem(menu, data.selectedText);
+        ui()->addMenuItem(item, QObject::tr("Copy..."));
+    }
+
+    if (!data.linkText.isEmpty() && data.linkUrl.isValid()) {
+        item = new NavigateMenuItem(menu, adapter, data.linkUrl);
+        ui()->addMenuItem(item, QObject::tr("Navigate to..."));
+        item = new CopyMenuItem(menu, data.linkUrl.toString());
+        ui()->addMenuItem(item, QObject::tr("Copy link address"));
+    }
+
+    // FIXME: expose the context menu data as an attached property to make this more useful
+    if (contextMenuExtraItems) {
+        ui()->addMenuSeparator(menu);
+        if (QObject* menuExtras = contextMenuExtraItems->create(ui()->creationContextForComponent(contextMenuExtraItems))) {
+            menuExtras->setParent(menu);
+            QQmlListReference entries(menu, QQmlMetaType::defaultProperty(menu).name(), qmlEngine(q));
+            if (entries.isValid())
+                entries.append(menuExtras);
+        }
+    }
+
+    // Now fire the popup() method on the top level menu
+    QMetaObject::invokeMethod(menu, "popup");
+    return true;
+}
+
+bool QQuickWebEngineViewPrivate::javascriptDialog(JavascriptDialogType type, const QString &message, const QString &defaultValue, QString *result)
+{
+    Q_UNUSED(message); Q_UNUSED(defaultValue); Q_UNUSED(result);
+    return false;
+}
+
 void QQuickWebEngineViewPrivate::titleChanged(const QString &title)
 {
     Q_Q(QQuickWebEngineView);
@@ -338,6 +412,19 @@ void QQuickWebEngineView::setInspectable(bool enable)
     d->adapter->enableInspector(enable);
 }
 
+void QQuickWebEngineViewExperimental::setExtraContextMenuEntriesComponent(QQmlComponent *contextMenuExtras)
+{
+    if (d_ptr->contextMenuExtraItems == contextMenuExtras)
+        return;
+    d_ptr->contextMenuExtraItems = contextMenuExtras;
+    emit extraContextMenuEntriesComponentChanged();
+}
+
+QQmlComponent *QQuickWebEngineViewExperimental::extraContextMenuEntriesComponent() const
+{
+    return d_ptr->contextMenuExtraItems;
+}
+
 void QQuickWebEngineView::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
 {
     QQuickItem::geometryChanged(newGeometry, oldGeometry);
diff --git a/src/webengine/api/qquickwebengineview_p_p.h b/src/webengine/api/qquickwebengineview_p_p.h
index 110a1b9b6..67337baeb 100644
--- a/src/webengine/api/qquickwebengineview_p_p.h
+++ b/src/webengine/api/qquickwebengineview_p_p.h
@@ -47,13 +47,17 @@
 
 #include <QScopedPointer>
 #include <QSharedData>
+#include <QString>
 #include <QtCore/qcompilerdetection.h>
 #include <QtQuick/private/qquickitem_p.h>
 
 class WebContentsAdapter;
+class UIDelegatesManager;
 
 QT_BEGIN_NAMESPACE
 class QQuickWebEngineView;
+class QQmlComponent;
+class QQmlContext;
 
 class Q_WEBENGINE_PRIVATE_EXPORT QQuickWebEngineViewport : public QObject {
     Q_OBJECT
@@ -88,12 +92,17 @@ private:
 class Q_WEBENGINE_PRIVATE_EXPORT QQuickWebEngineViewExperimental : public QObject {
     Q_OBJECT
     Q_PROPERTY(QQuickWebEngineViewport *viewport READ viewport)
+    Q_PROPERTY(QQmlComponent *extraContextMenuEntriesComponent READ extraContextMenuEntriesComponent WRITE setExtraContextMenuEntriesComponent NOTIFY extraContextMenuEntriesComponentChanged)
+
 public:
     QQuickWebEngineViewport *viewport() const;
     Q_INVOKABLE void adoptHandle(QQuickWebEngineViewHandle *viewHandle);
+    void setExtraContextMenuEntriesComponent(QQmlComponent *);
+    QQmlComponent *extraContextMenuEntriesComponent() const;
 
 Q_SIGNALS:
     void createWindow(const QJSValue &newViewHandle, const QString &newViewDisposition);
+    void extraContextMenuEntriesComponentChanged();
 
 private:
     QQuickWebEngineViewExperimental(QQuickWebEngineViewPrivate* viewPrivate);
@@ -112,6 +121,7 @@ public:
 
     QQuickWebEngineViewExperimental *experimental() const;
     QQuickWebEngineViewport *viewport() const;
+    UIDelegatesManager *ui();
 
     virtual RenderWidgetHostViewQtDelegate* CreateRenderWidgetHostViewQtDelegate(RenderWidgetHostViewQtDelegateClient *client, RenderingMode) Q_DECL_OVERRIDE;
     virtual void titleChanged(const QString&) Q_DECL_OVERRIDE;
@@ -125,8 +135,8 @@ public:
     virtual void focusContainer() Q_DECL_OVERRIDE;
     virtual void adoptNewWindow(WebContentsAdapter *newWebContents, WindowOpenDisposition disposition, const QRect &) Q_DECL_OVERRIDE;
     virtual void close() Q_DECL_OVERRIDE;
-    virtual bool contextMenuRequested(const WebEngineContextMenuData &) Q_DECL_OVERRIDE { return false;}
-    virtual bool javascriptDialog(JavascriptDialogType type, const QString &message, const QString &defaultValue = QString(), QString *result = 0) Q_DECL_OVERRIDE { return false; }
+    virtual bool contextMenuRequested(const WebEngineContextMenuData &) Q_DECL_OVERRIDE;
+    virtual bool javascriptDialog(JavascriptDialogType, const QString &message, const QString &defaultValue = QString(), QString *result = 0) Q_DECL_OVERRIDE { Q_UNUSED(message); Q_UNUSED(defaultValue); Q_UNUSED(result); return false; }
     virtual void runFileChooser(FileChooserMode, const QString &defaultFileName, const QStringList &acceptedMimeTypes) { Q_UNUSED(defaultFileName); Q_UNUSED(acceptedMimeTypes);}
 
     void setDevicePixelRatio(qreal);
@@ -134,6 +144,7 @@ public:
     QExplicitlySharedDataPointer<WebContentsAdapter> adapter;
     QScopedPointer<QQuickWebEngineViewExperimental> e;
     QScopedPointer<QQuickWebEngineViewport> v;
+    QQmlComponent *contextMenuExtraItems;
     QUrl icon;
     int loadProgress;
     bool inspectable;
@@ -141,6 +152,7 @@ public:
     qreal devicePixelRatio;
 
 private:
+    QScopedPointer<UIDelegatesManager> m_uIDelegatesManager;
     qreal m_dpiScale;
 };
 
diff --git a/src/webengine/ui/Menu.qml b/src/webengine/ui/Menu.qml
new file mode 100644
index 000000000..e9cd25ed1
--- /dev/null
+++ b/src/webengine/ui/Menu.qml
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.1
+import QtQuick.Controls 1.0 as Controls
+
+Controls.Menu {
+    signal done()
+
+    // Use private API for now
+    on__MenuClosed: done();
+}
diff --git a/src/webengine/ui/MenuItem.qml b/src/webengine/ui/MenuItem.qml
new file mode 100644
index 000000000..25b4ecb2b
--- /dev/null
+++ b/src/webengine/ui/MenuItem.qml
@@ -0,0 +1,46 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.1
+import QtQuick.Controls 1.0 as Controls
+
+Controls.MenuItem { }
+
diff --git a/src/webengine/ui/MenuSeparator.qml b/src/webengine/ui/MenuSeparator.qml
new file mode 100644
index 000000000..b04d61b35
--- /dev/null
+++ b/src/webengine/ui/MenuSeparator.qml
@@ -0,0 +1,45 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.1
+import QtQuick.Controls 1.0 as Controls
+
+Controls.MenuSeparator { }
diff --git a/src/webengine/ui/qmldir b/src/webengine/ui/qmldir
new file mode 100644
index 000000000..bc0e2e300
--- /dev/null
+++ b/src/webengine/ui/qmldir
@@ -0,0 +1,4 @@
+module QtWebEngine.UIDelegates
+Menu 1.0 Menu.qml
+MenuItem 1.0 MenuItem.qml
+MenuSeparator 1.0 MenuSeparator.qml
diff --git a/src/webengine/ui/ui.pro b/src/webengine/ui/ui.pro
new file mode 100644
index 000000000..42a5777dc
--- /dev/null
+++ b/src/webengine/ui/ui.pro
@@ -0,0 +1,8 @@
+TARGETPATH = QtWebEngine/UIDelegates
+
+QML_FILES += \
+    Menu.qml \
+    MenuItem.qml \
+    MenuSeparator.qml
+
+load(qml_module)
diff --git a/src/webengine/ui_delegates_manager.cpp b/src/webengine/ui_delegates_manager.cpp
new file mode 100644
index 000000000..34edbd479
--- /dev/null
+++ b/src/webengine/ui_delegates_manager.cpp
@@ -0,0 +1,233 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "ui_delegates_manager.h"
+#include "api/qquickwebengineview_p.h"
+
+#include <QAbstractListModel>
+#include <QClipboard>
+#include <QFileInfo>
+#include <QGuiApplication>
+#include <QQmlContext>
+#include <QQmlEngine>
+#include <QQmlProperty>
+#include <QStringBuilder>
+#include <private/qqmlmetatype_p.h>
+
+// Uncomment for QML debugging
+//#define UI_DELEGATES_DEBUG
+
+#define NO_SEPARATOR
+#define FILE_NAME_CASE_STATEMENT(TYPE, COMPONENT) \
+    case UIDelegatesManager::TYPE:\
+        return QStringLiteral(#TYPE".qml");
+
+static QString fileNameForComponent(UIDelegatesManager::ComponentType type)
+{
+    switch (type) {
+    FOR_EACH_COMPONENT_TYPE(FILE_NAME_CASE_STATEMENT, NO_SEPARATOR)
+    default:
+        Q_UNREACHABLE();
+    }
+    return QString();
+}
+
+MenuItemHandler::MenuItemHandler(QObject *parent)
+    : QObject(parent)
+{
+}
+
+
+CopyMenuItem::CopyMenuItem(QObject *parent, const QString &textToCopy)
+    : MenuItemHandler(parent)
+    , m_textToCopy(textToCopy)
+{
+    connect(this, &MenuItemHandler::triggered, this, &CopyMenuItem::onTriggered);
+}
+
+void CopyMenuItem::onTriggered()
+{
+    qApp->clipboard()->setText(m_textToCopy);
+}
+
+NavigateMenuItem::NavigateMenuItem(QObject *parent, const QExplicitlySharedDataPointer<WebContentsAdapter> &adapter, const QUrl &targetUrl)
+    : MenuItemHandler(parent)
+    , m_adapter(adapter)
+    , m_targetUrl(targetUrl)
+{
+    connect(this, &MenuItemHandler::triggered, this, &NavigateMenuItem::onTriggered);
+}
+
+void NavigateMenuItem::onTriggered()
+{
+    m_adapter->load(m_targetUrl);
+}
+
+UIDelegatesManager::UIDelegatesManager(QQuickWebEngineView *view)
+    : m_view(view)
+{
+}
+
+#define COMPONENT_MEMBER_CASE_STATEMENT(TYPE, COMPONENT) \
+    case TYPE: \
+        component = &COMPONENT##Component; \
+        break;
+
+bool UIDelegatesManager::ensureComponentLoaded(ComponentType type)
+{
+    QScopedPointer<QQmlComponent> *component;
+    switch (type) {
+    FOR_EACH_COMPONENT_TYPE(COMPONENT_MEMBER_CASE_STATEMENT, NO_SEPARATOR)
+    default:
+        Q_UNREACHABLE();
+        return false;
+    }
+    QString fileName(fileNameForComponent(type));
+#ifndef UI_DELEGATES_DEBUG
+    if (!(*component).isNull())
+        return true;
+#else // Unconditionally reload the components each time.
+    fprintf(stderr, "%s: %s\n", Q_FUNC_INFO, qPrintable(fileName));
+#endif
+    QQmlEngine* engine = qmlEngine(m_view);
+    if (!engine)
+        return false;
+    QString absolutePath;
+    Q_FOREACH (const QString &path, engine->importPathList()) {
+        QFileInfo fi(path % QStringLiteral("/QtWebEngine/UIDelegates/") % fileName);
+        if (fi.exists())
+            absolutePath = fi.absoluteFilePath();
+    }
+    // FIXME: handle async loading
+    (*component).reset(new QQmlComponent(engine, QUrl(absolutePath), QQmlComponent::PreferSynchronous, m_view));
+
+    if ((*component)->status() != QQmlComponent::Ready) {
+#ifdef UI_DELEGATES_DEBUG
+        Q_FOREACH (const QQmlError& err, (*component)->errors())
+            fprintf(stderr, "  component error: %s\n", qPrintable(err.toString()));
+#endif
+        return false;
+    }
+    return true;
+}
+
+QQmlContext *UIDelegatesManager::creationContextForComponent(QQmlComponent *component)
+{
+    Q_ASSERT(component);
+
+    QQmlContext* baseContext = component->creationContext() ? component->creationContext() : qmlContext(m_view);
+    Q_ASSERT(baseContext);
+    return baseContext;
+}
+
+#define CHECK_QML_SIGNAL_PROPERTY(prop, type, location) \
+    if (!prop.isSignalProperty()) \
+        qWarning(#type "component (Loaded from %s) is missing %s signal property.\n", qPrintable(location.toString()), qPrintable(prop.name()));
+
+void UIDelegatesManager::addMenuItem(MenuItemHandler *menuItemHandler, const QString &text, const QString &iconName, bool enabled)
+{
+    Q_ASSERT(menuItemHandler);
+    if (!ensureComponentLoaded(MenuItem))
+        return;
+    QObject *it = menuItemComponent->beginCreate(creationContextForComponent(menuItemComponent.data()));
+
+    QQmlProperty(it, QStringLiteral("text")).write(text);
+    QQmlProperty(it, QStringLiteral("iconName")).write(iconName);
+    QQmlProperty(it, QStringLiteral("enabled")).write(enabled);
+
+    QQmlProperty signal(it, QStringLiteral("onTriggered"));
+    CHECK_QML_SIGNAL_PROPERTY(signal, menuItemComponent->url());
+    QObject::connect(it, signal.method(), menuItemHandler, QMetaMethod::fromSignal(&MenuItemHandler::triggered));
+    menuItemComponent->completeCreate();
+
+    QObject *menu = menuItemHandler->parent();
+    it->setParent(menu);
+
+    QQmlListReference entries(menu, QQmlMetaType::defaultProperty(menu).name(), qmlEngine(m_view));
+    if (entries.isValid())
+        entries.append(it);
+}
+
+void UIDelegatesManager::addMenuSeparator(QObject *menu)
+{
+    if (!ensureComponentLoaded(MenuSeparator))
+        return;
+
+    QQmlContext *itemContext = creationContextForComponent(menuSeparatorComponent.data());
+    QObject *sep = menuSeparatorComponent->create(itemContext);
+    sep->setParent(menu);
+
+    QQmlListReference entries(menu, QQmlMetaType::defaultProperty(menu).name(), qmlEngine(m_view));
+    if (entries.isValid())
+        entries.append(sep);
+}
+
+QObject *UIDelegatesManager::addMenu(QObject *parentMenu, const QString &title, const QPoint& pos)
+{
+
+    if (!ensureComponentLoaded(Menu))
+        return 0;
+    QQmlContext *context(creationContextForComponent(menuComponent.data()));
+    QObject *menu = menuComponent->beginCreate(context);
+    // Useful when not using Qt Quick Controls' Menu
+    if (QQuickItem* item = qobject_cast<QQuickItem*>(menu))
+        item->setParentItem(m_view);
+
+    if (!title.isEmpty())
+        QQmlProperty(menu, QStringLiteral("title")).write(title);
+    if (!pos.isNull())
+        QQmlProperty(menu, QStringLiteral("pos")).write(pos);
+    if (!parentMenu) {
+        QQmlProperty doneSignal(menu, QStringLiteral("onDone"));
+        static int deleteLaterIndex = menu->metaObject()->indexOfSlot("deleteLater()");
+        if (doneSignal.isSignalProperty())
+            QObject::connect(menu, doneSignal.method(), menu, menu->metaObject()->method(deleteLaterIndex));
+    } else {
+        menu->setParent(parentMenu);
+
+        QQmlListReference entries(parentMenu, QQmlMetaType::defaultProperty(parentMenu).name(), qmlEngine(m_view));
+        if (entries.isValid())
+            entries.append(menu);
+    }
+    menuComponent->completeCreate();
+    return menu;
+}
+
diff --git a/src/webengine/ui_delegates_manager.h b/src/webengine/ui_delegates_manager.h
new file mode 100644
index 000000000..65f994b93
--- /dev/null
+++ b/src/webengine/ui_delegates_manager.h
@@ -0,0 +1,130 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef UI_DELEGATES_MANAGER_H
+#define UI_DELEGATES_MANAGER_H
+
+#include "qglobal.h"
+#include "web_contents_adapter.h"
+
+#include <QExplicitlySharedDataPointer>
+#include <QPoint>
+#include <QPointer>
+#include <QQmlComponent>
+#include <QUrl>
+
+#define FOR_EACH_COMPONENT_TYPE(F, SEPARATOR) \
+    F(Menu, menu) SEPARATOR \
+    F(MenuItem, menuItem) SEPARATOR \
+    F(MenuSeparator, menuSeparator) SEPARATOR
+
+#define COMMA_SEPARATOR ,
+#define SEMICOLON_SEPARATOR ;
+#define ENUM_DECLARATION(TYPE, COMPONENT) \
+    TYPE
+#define MEMBER_DECLARATION(TYPE, COMPONENT) \
+    QScopedPointer<QQmlComponent> COMPONENT##Component
+
+QT_BEGIN_NAMESPACE
+class QObject;
+class QQmlContext;
+class QQuickWebEngineView;
+QT_END_NAMESPACE
+
+
+class MenuItemHandler : public QObject {
+Q_OBJECT
+public:
+    MenuItemHandler(QObject *parent);
+
+Q_SIGNALS:
+    void triggered();
+};
+
+class CopyMenuItem : public MenuItemHandler {
+    Q_OBJECT
+public:
+    CopyMenuItem(QObject *parent, const QString &textToCopy);
+
+private:
+    void onTriggered();
+
+    QString m_textToCopy;
+};
+
+class NavigateMenuItem : public MenuItemHandler {
+    Q_OBJECT
+public:
+    NavigateMenuItem(QObject *parent, const QExplicitlySharedDataPointer<WebContentsAdapter> &adapter, const QUrl &targetUrl);
+
+private:
+    void onTriggered();
+
+    QExplicitlySharedDataPointer<WebContentsAdapter> m_adapter;
+    QUrl m_targetUrl;
+};
+
+class UIDelegatesManager {
+
+public:
+    enum ComponentType {
+        FOR_EACH_COMPONENT_TYPE(ENUM_DECLARATION, COMMA_SEPARATOR)
+    };
+
+    UIDelegatesManager(QQuickWebEngineView *);
+
+    void addMenuItem(MenuItemHandler *menuItemHandler, const QString &text, const QString &iconName = QString(), bool enabled = true);
+    void addMenuSeparator(QObject *menu);
+    QObject *addMenu(QObject *parentMenu, const QString &title, const QPoint &pos = QPoint());
+    QQmlContext *creationContextForComponent(QQmlComponent *);
+
+private:
+    bool ensureComponentLoaded(ComponentType);
+
+    QQuickWebEngineView *m_view;
+
+    FOR_EACH_COMPONENT_TYPE(MEMBER_DECLARATION, SEMICOLON_SEPARATOR)
+
+    Q_DISABLE_COPY(UIDelegatesManager);
+
+};
+
+#endif // UI_DELEGATES_MANAGER_H
diff --git a/src/webengine/webengine.pro b/src/webengine/webengine.pro
index 96724d465..877c515a9 100644
--- a/src/webengine/webengine.pro
+++ b/src/webengine/webengine.pro
@@ -22,7 +22,8 @@ QMAKE_RPATHDIR += $$LIBPATH
 SOURCES = \
         api/qquickwebengineloadrequest.cpp \
         api/qquickwebengineview.cpp \
-        render_widget_host_view_qt_delegate_quick.cpp
+        render_widget_host_view_qt_delegate_quick.cpp \
+        ui_delegates_manager.cpp
 
 HEADERS = \
         api/qtwebengineglobal.h \
@@ -30,6 +31,7 @@ HEADERS = \
         api/qquickwebengineloadrequest_p.h \
         api/qquickwebengineview_p.h \
         api/qquickwebengineview_p_p.h \
-        render_widget_host_view_qt_delegate_quick.h
+        render_widget_host_view_qt_delegate_quick.h \
+        ui_delegates_manager.h
 
 load(qt_module)