Bug 130495 Get rid of SessionHandleAdapter
Now, we use SessionHandleAdapter to keep current active report deisng. That's a bad practive for editor swith and rebuild will cuase lots of problmes. Need find way to replace it.
UI/org.eclipse.birt.report.designer.ui.lib/src/org/eclipse/birt/report/designer/ui/editors/LibraryLayoutEditorFormPage.java
}
	public IManagedForm getManagedForm( )
	{
		return null;
	}
	public void setActive( boolean active )
	{
	}
	public boolean isActive( )
	{
		return false;
	}
	public boolean canLeaveThePage( )
	{
		return true;
	}
	public Control getPartControl( )
	{
		return control;
	}
	public String getId( )
	{
		return ID;
	}
	public int getIndex( )
	{
		return index;
	}
	public void setIndex( int index )