libappfw|GuiWidget: Enabling/disabling widget state serialization

skyjake · Mar 6, 2014 · e67b786 · e67b786
1 parent ec6ef2c
commit e67b786
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Showing 2 changed files with 17 additions and 0 deletions.
diff --git a/doomsday/libappfw/include/de/framework/guiwidget.h b/doomsday/libappfw/include/de/framework/guiwidget.h
@@ -252,6 +252,14 @@ class LIBAPPFW_PUBLIC GuiWidget : public QObject, public Widget
 
     void removeEventHandler(IEventHandler *handler);
 
+    /**
+     * Enables or disables automatic state serialization for widgets derived from
+     * IPersistent. State serialization occurs when the widget is gl(De)Init'd.
+     *
+     * @param enabled  @c true to enable, @c false to disable.
+     */
+    void enableStateSerialization(bool enabled = true);
+
     // Events.
     void initialize();
     void deinitialize();

diff --git a/doomsday/libappfw/src/guiwidget.cpp b/doomsday/libappfw/src/guiwidget.cpp
@@ -47,6 +47,7 @@ DENG2_PIMPL(GuiWidget)
     bool inited;
     bool needGeometry;
     bool styleChanged;
+    bool stateSerializationEnabled;
     Background background;
     Animation opacity;
     Animation opacityWhenDisabled;
@@ -74,6 +75,7 @@ DENG2_PIMPL(GuiWidget)
         , inited(false)
         , needGeometry(true)
         , styleChanged(false)
+        , stateSerializationEnabled(true)
         , opacity(1.f, Animation::Linear)
         , opacityWhenDisabled(1.f, Animation::Linear)
         , firstUpdateAfterCreation(true)
@@ -319,6 +321,7 @@ DENG2_PIMPL(GuiWidget)
 
     void restoreState()
     {
+        if(!stateSerializationEnabled) return;
         try
         {
             if(IPersistent *po = self.maybeAs<IPersistent>())
@@ -336,6 +339,7 @@ DENG2_PIMPL(GuiWidget)
 
     void saveState()
     {
+        if(!stateSerializationEnabled) return;
         try
         {
             if(IPersistent *po = self.maybeAs<IPersistent>())
@@ -535,6 +539,11 @@ void GuiWidget::removeEventHandler(IEventHandler *handler)
     d->eventHandlers.removeOne(handler);
 }
 
+void GuiWidget::enableStateSerialization(bool enabled)
+{
+    d->stateSerializationEnabled = enabled;
+}
+
 void GuiWidget::initialize()
 {
     if(d->inited) return;