Bug 149617 Support Content-type-based editor lookup
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/ReportPlugin.java
ReportDesignConstants.RECTANGLE_ITEM,
			ReportDesignConstants.REPORT_ITEM,
			ReportDesignConstants.SCRIPT_DATA_SET,
			ReportDesignConstants.SCRIPT_DATA_SOURCE,
			ReportDesignConstants.SIMPLE_DATA_SET_ELEMENT,
			ReportDesignConstants.TEMPLATE_DATA_SET,
			ReportDesignConstants.TEMPLATE_ELEMENT,
			ReportDesignConstants.TEMPLATE_PARAMETER_DEFINITION,
	} );
	private List reportExtensionNames;
	/**
	 * The constructor.
	 */
	public ReportPlugin( )
	{
		super( );
		plugin = this;
	}
	/**
	 * Called upon plug-in activation
	 * 
	 * @param context
	 *            the context
	 */
	public void start( BundleContext context ) throws Exception
	{
		super.start( context );
		
		getPreferenceStore( ).setDefault( IPreferenceConstants.PALETTE_DOCK_LOCATION,
				IPreferenceConstants.DEFAULT_PALETTE_SIZE );