Bug 166015 Refactor designer actions to eclipse command framework
Eclipse command framework provide a more explicit way to manage UI actions contributions, we can take it's advantage to make our actions code more clean and maintainable.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/views/actions/InsertAction.java
*  
	 */
	public InsertAction( Object selectedObject )
	{
		this( selectedObject, TEXT );
	}
	/**
	 * Create a new insert action with given selection and text
	 * 
	 * @param selectedObject
	 *            the selected object,which cannot be null
	 * @param text
	 *            the text of the action
	 */
	public InsertAction( Object selectedObject, String text )
	{
		this( selectedObject, text, null );
	}
	/**
	 * Create a new insert action with given selection and text
	 * 
	 * @param selectedObject
	 *            the selected object,which cannot be null
	 * @param text
	 *            the text of the action
	 */
	public InsertAction( Object selectedObject, String text, String type )
	{
		this( selectedObject, text, type, CURRENT );
	}