it helps if I commit *both* halves of the "add activity" button

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=796754

containment.cpp

@@ -280,6 +280,9 @@ void Containment::setContainmentType(Containment::Type type)
                                                                           i18n("Lock Widgets"));
                 connect(lockTool, SIGNAL(clicked()), this, SLOT(toggleDesktopImmutability()));
             }
+
+            Plasma::Widget *activityTool = addToolBoxTool("addSiblingContainment", "list-add", i18n("Add Activity"));
+            connect(activityTool, SIGNAL(clicked()), this, SLOT(addSiblingContainment()));
         }
     } else {
         delete d->toolbox;
@@ -542,6 +545,11 @@ void Containment::zoomIn()
     emit zoomIn(this);
 }
 
+void Containment::addSiblingContainment()
+{
+    emit addSiblingContainment(this);
+}
+
 void Containment::clearApplets()
 {
     qDeleteAll(d->applets);

containment.h

@@ -337,6 +337,12 @@ class PLASMA_EXPORT Containment : public Applet
          */
         void zoomOut();
 
+        /**
+         * Emitted when the containment wants a new containment to be created.
+         * Usually only used for desktop containments.
+         */
+        void addSiblingContainment(Plasma::Containment *);
+
         /**
          * Emitted when the containment requests an add widgets dialog is shown.
          * Usually only used for desktop containments.
@@ -383,6 +389,11 @@ class PLASMA_EXPORT Containment : public Applet
          */
         void zoomIn();
 
+        /**
+         * Tells the corona to create a new desktop containment
+         */
+        void addSiblingContainment();
+
     protected:
         /**
          * Optionally creates a layout for the Containment for the new