implement a default configChanged() for Containment that reloads the wallpaper

svn path=/trunk/KDE/kdelibs/; revision=1185912

containment.cpp

@@ -2079,6 +2079,17 @@ void Containment::showConfigurationInterface()
     Applet::showConfigurationInterface();
 }
 
+void Containment::configChanged()
+{
+    if (d->drawWallpaper) {
+        KConfigGroup group = config();
+        setWallpaper(group.readEntry("wallpaperplugin", defaultWallpaper),
+                     group.readEntry("wallpaperpluginmode", defaultWallpaperMode));
+    }
+
+    Applet::configChanged();
+}
+
 void ContainmentPrivate::requestConfiguration()
 {
     emit q->configureRequested(q);

containment.h

@@ -527,6 +527,13 @@ class PLASMA_EXPORT Containment : public Applet
          */
         void showConfigurationInterface();
 
+        /**
+         * Called when applet configuration values have changed.
+         * @reimp
+         * @sa Applet::configChanged()
+         */
+        void configChanged();
+
     protected:
         /**
          * Sets the type of this containment.