Bug 134479 Edit in XML Source cannot be reflected in Layout.
Description: Edit in XML Source cannot be reflected in Layout. Steps to reproduce: 1. New a report parameter with default value "value1" and save 2. Click XML Source, delete <property name="defaultValue">value1</property> and save. 3. Back to Layout, open parameter edit dialog Expected result: Default value is empty. Actual result: Default vlaue was still "value1", tried to change it to other values but Layout didn't detected the change.
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/ui/editors/pages/ReportMasterPageEditorFormPage.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.IFormPage#isActive()
	 */
	public boolean isActive( )
	{
		return false;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.IFormPage#canLeaveThePage()
	 */
	public boolean canLeaveThePage( )
	{
		return true;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.IFormPage#getPartControl()
	 */
	public Control getPartControl( )
	{
		return control;
	}
	/*
	 * (non-Javadoc)
	 *