+TextVisualShaderFactory& VisualFactory::GetTextVisualShaderFactory()
+{
+ if(!mTextVisualShaderFactory)
+ {
+ mTextVisualShaderFactory = std::unique_ptr<TextVisualShaderFactory>(new TextVisualShaderFactory());
+ }
+ return *mTextVisualShaderFactory;
+}
+
+void VisualFactory::OnDiscardCallback()
+{
+ mIdleCallback = nullptr;
+
+ // Discard visual now.
+ mDiscardedVisuals.clear();
+}
+
+void VisualFactory::RegisterDiscardCallback()
+{
+ if(!mIdleCallback && Adaptor::IsAvailable())
+ {
+ // The callback manager takes the ownership of the callback object.
+ mIdleCallback = MakeCallback(this, &VisualFactory::OnDiscardCallback);
+
+ Adaptor& adaptor = Adaptor::Get();
+
+ if(!adaptor.AddIdle(mIdleCallback, false))
+ {
+ // Fail to add idle. (Maybe adaptor is paused.)
+ mIdleCallback = nullptr;
+ }
+ }
+}
+