chart2: Fix using the last shape

Clicking a shape button works only for the default shape,
not for the last used one.

Steps to reproduce:
1) Click on the drop-down arrow of one of the shape buttons,
   and select a shape. Notice that the button icon updates
   with the last selected shape.
2) Click on another button.
3) Click on the first button, and try to draw something.
   The button doesn't work anymore. Only opening the sub
   toolbar and selecting the shape there will work.

The problem is in ToolboxController::execute that requires
the command to be in the listener map, but we didn't
register sub commands (like .uno:SymbolShapes.sun).
Instead of doing that, we'll try some generic solution.
(Note that calling the corresponding method from
SvxTbxCtlCustomShapes like we do in other methods here
won't work, because ChartController::queryDispatch checks
for the "_self" target, but SfxToolBoxControl::Dispatch
doesn't provide it.)

Change-Id: I5be3dfd3ee3ca9ab9d8080929173dbe5984f61a0

chart2/source/controller/main/ShapeToolbarController.cxx

@@ -231,6 +231,14 @@ Reference< awt::XWindow > ShapeToolbarController::createPopupWindow() throw (uno
     return xRet;
 }
 
+void ShapeToolbarController::execute( sal_Int16 KeyModifier ) throw (uno::RuntimeException, std::exception)
+{
+    uno::Sequence< beans::PropertyValue > aArgs( 1 );
+    aArgs[0].Name = "KeyModifier";
+    aArgs[0].Value <<= KeyModifier;
+    dispatchCommand( m_aCommandURL, aArgs );
+}
+
 // ::com::sun::star::frame::XSubToolbarController
 sal_Bool ShapeToolbarController::opensSubToolbar() throw (uno::RuntimeException, std::exception)
 {

chart2/source/controller/main/ShapeToolbarController.hxx

@@ -80,6 +80,7 @@ public:
 
     // ::com::sun::star::frame::XToolbarController
     virtual ::com::sun::star::uno::Reference< ::com::sun::star::awt::XWindow > SAL_CALL createPopupWindow() throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
+    virtual void SAL_CALL execute( sal_Int16 KeyModifier ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
 
     // ::com::sun::star::frame::XSubToolbarController
     virtual sal_Bool SAL_CALL opensSubToolbar() throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;