add an init() method that will be called only after the applet is completely set up for those applets that care; also allows us to do delayed init in the case of expensive set up

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=712119

applet.cpp

@@ -376,6 +376,10 @@ Applet::~Applet()
     delete d;
 }
 
+void Applet::init()
+{
+}
+
 uint Applet::id() const
 {
     return d->appletId;

applet.h

@@ -95,6 +95,14 @@ class PLASMA_EXPORT Applet : public Widget
 
         ~Applet();
 
+        /**
+         * This method is called once the applet is loaded and added to a Corona.
+         * If the applet requires a QGraphicsScene or has an particularly intensive
+         * set of initialization routines to go through, consider implementing it
+         * in this method instead of the contsructor.
+         **/
+        virtual void init();
+
         /**
          * @return the id of this applet
          */