Enabled the use of promoted widgets in new form templates.

The form builder used for preview of the templates did not implement
custom widget handling (FormBuilder::createCustomWidgets()).
On encountering a promoted widget, the widget factory
would then create a Widget Database entry specifying QWidget
inheritance (emergency fallback) which could not be overidden later
on.
To fix this, moved the code for handling custom widgets from
QDesignerResource to QSimpleResource and create a new
formbuilder class that handles it especially for the New Form Dialog
preview.

Task-number:  254282

1 files changed, 16 insertions, 1 deletions

diff --git a/tools/designer/src/lib/shared/qdesigner_formbuilder_p.h b/tools/designer/src/lib/shared/qdesigner_formbuilder_p.h
index b982e1c..ee40085 100644
--- a/tools/designer/src/lib/shared/qdesigner_formbuilder_p.h
+++ b/tools/designer/src/lib/shared/qdesigner_formbuilder_p.h
@@ -75,7 +75,7 @@ namespace qdesigner_internal {
 class DesignerPixmapCache;
 class DesignerIconCache;
 
-/* Form builder used for previewing forms, widget box and new form dialog.
+/* Form builder used for previewing forms and widget box.
  * It applies the system settings to its toplevel window. */
 
 class QDESIGNER_SHARED_EXPORT QDesignerFormBuilder: public QFormBuilder
@@ -159,6 +159,21 @@ private:
     bool m_mainWidget;
 };
 
+// Form builder for a new form widget (preview). To allow for promoted
+// widgets in the template, it implements the handling of custom widgets
+// (adding of them to the widget database).
+
+class QDESIGNER_SHARED_EXPORT NewFormWidgetFormBuilder: public QDesignerFormBuilder {
+public:
+    NewFormWidgetFormBuilder(QDesignerFormEditorInterface *core,
+                             Mode mode,
+                             const DeviceProfile &deviceProfile = DeviceProfile());
+
+protected:
+    virtual void createCustomWidgets(DomCustomWidgets *);
+};
+
+
 } // namespace qdesigner_internal
 
 QT_END_NAMESPACE