Bug 315745 Two message pop up when switch from XML source to layout.[01]
UI/org.eclipse.birt.report.designer.ui.lib/src/org/eclipse/birt/report/designer/ui/editors/LibraryLayoutEditorFormPage.java
return page;
		}
		return super.getAdapter( adapter );
	}
	public void setInput( IEditorInput input )
	{
		super.setInput( input );
	}
	protected IReportProvider getProvider( )
	{
		return (IReportProvider) editor.getAdapter( IReportProvider.class );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.texteditor.AbstractTextEditor#firePropertyChange(int)
	 */
	protected void firePropertyChange( int type )
	{
		if ( type == PROP_DIRTY )
		{
			editor.editorDirtyStateChanged( );
		}
		else
		{
			super.firePropertyChange( type );
		}
	}
}