qtquick: Don't hardcode "DockWidget.qml"

Allow the user to specify their impl

src/DockWidgetQuick.cpp

@@ -10,6 +10,7 @@
 */
 
 #include "DockWidgetQuick.h"
+#include "FrameworkWidgetFactory.h"
 
 #include <Config.h>
 #include <QQuickItem>
@@ -29,7 +30,8 @@ class DockWidgetQuick::Private
 public:
     Private(DockWidgetQuick *dw)
         : q(dw)
-        , m_visualItem(q->createItem(Config::self().qmlEngine(), QStringLiteral("qrc:/kddockwidgets/private/quick/qml/DockWidget.qml")))
+        , m_visualItem(q->createItem(Config::self().qmlEngine(),
+                                     Config::self().frameworkWidgetFactory()->dockwidgetFilename().toString()))
     {
         Q_ASSERT(m_visualItem);
         m_visualItem->setParent(q);

src/FrameworkWidgetFactory.cpp

@@ -217,6 +217,11 @@ QUrl DefaultWidgetFactory::titleBarFilename() const
     return QUrl(QStringLiteral("qrc:/kddockwidgets/private/quick/qml/TitleBar.qml"));
 }
 
+QUrl DefaultWidgetFactory::dockwidgetFilename() const
+{
+    return QUrl(QStringLiteral("qrc:/kddockwidgets/private/quick/qml/DockWidget.qml"));
+}
+
 #endif // QtQuick
 
 // iconForButtonType impl is the same for QtQuick and QtWidgets

src/FrameworkWidgetFactory.h

@@ -146,6 +146,7 @@ public:
     virtual QAbstractButton* createTitleBarButton(QWidget *parent, TitleBarButtonType) const = 0;
 #else
     virtual QUrl titleBarFilename() const = 0;
+    virtual QUrl dockwidgetFilename() const = 0;
 #endif
 
     /// @brief Returns the icon to be used with the specified @p type
@@ -179,6 +180,7 @@ public:
     QAbstractButton* createTitleBarButton(QWidget *parent, TitleBarButtonType) const override;
 #else
     QUrl titleBarFilename() const override;
+    QUrl dockwidgetFilename() const override;
 #endif
 
     QIcon iconForButtonType(TitleBarButtonType type, qreal dpr) const override;