UI: Implement deferred update flag (properties)

obs/properties-view.cpp

@@ -50,6 +50,9 @@ void OBSPropertiesView::ReloadProperties()
 		obs_properties_apply_settings(properties.get(), settings);
 	}
 
+	uint32_t flags = obs_properties_get_flags(properties.get());
+	deferUpdate = (flags & OBS_PROPERTIES_DEFER_UPDATE) != 0;
+
 	RefreshProperties();
 }
 
@@ -755,7 +758,7 @@ void WidgetInfo::ControlChanged()
 			return;
 	}
 
-	if (view->callback)
+	if (view->callback && !view->deferUpdate)
 		view->callback(view->obj, view->settings);
 
 	view->SignalChanged();

obs/properties-view.hpp

@@ -66,6 +66,7 @@ private:
 	std::vector<std::unique_ptr<WidgetInfo>> children;
 	std::string                              lastFocused;
 	QWidget                                  *lastWidget = nullptr;
+	bool                                     deferUpdate;
 
 	QWidget *NewWidget(obs_property_t *prop, QWidget *widget,
 			const char *signal);
@@ -106,4 +107,7 @@ public:
 			int minSize = 0);
 
 	inline obs_data_t *GetSettings() const {return settings;}
+
+	inline void UpdateSettings() {callback(obj, settings);}
+	inline bool DeferUpdate() const {return deferUpdate;}
 };

obs/window-basic-properties.cpp

@@ -117,6 +117,9 @@ void OBSBasicProperties::on_buttonBox_clicked(QAbstractButton *button)
 	if (val == QDialogButtonBox::AcceptRole) {
 		acceptClicked = true;
 		close();
+
+		if (view->DeferUpdate())
+			view->UpdateSettings();
 	}
 
 	if (val == QDialogButtonBox::RejectRole) {
@@ -260,6 +263,8 @@ bool OBSBasicProperties::ConfirmQuit()
 
 	switch (button) {
 	case QMessageBox::Save:
+		if (view->DeferUpdate())
+			view->UpdateSettings();
 		// Do nothing because the settings are already updated
 		break;
 	case QMessageBox::Discard: