Bug 130262 [Regression]Click Data Explorer does not cancel palette insert mode
Description: Click Data Explorer does not cancel palette insert mode. Steps to reproduce: 1. Click grid in Palette, then click Data Explorer Result: Move mouse to Layout, it still keep the status of insert grid mode. By the way, after step1, if I clicked a col in dataset and drag it to Layout, the column was inserted as expected but the mouse cursor still kept the insert grid mode.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/ui/editors/MultiPageReportEditor.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.WorkbenchPart#getAdapter(java.lang.Class)
	 */
	public Object getAdapter( Class type )
	{
		if ( type == IReportProvider.class )
		{
			return new FileReportProvider( );
		}
		if ( type == ILibraryProvider.class )
		{
			return new LibraryProvider( );
		}
		if ( type == PalettePage.class )
		{
			Object adapter = getPalettePage( );
			updatePaletteView( getActivePageInstance( ) );
			return adapter;
		}
		if ( type == IContentOutlinePage.class )
		{
			Object adapter = getOutlinePage( );
			updateOutLineView( getActivePageInstance( ) );
			return adapter;