Bug 142432 MasterPage from library can't be restored to modify
Details: MasterPage from library can't be restored to modify Step: 1.New a library named lib1, and insert a masterpage named lib-mp. 2.Publish the library into resource folder. 3.New a report design and use lib1. 4.Drop the lib-mp from library explorer into outline of report design. 5.Double click lib-mp, and switch to Property editro tab. 6.Click restore. Actual result: Pop up an error message and said that the master page cannot specify size the page type is not custom.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
/**
	 * Determines if this element is editable or not. If the element comes from
	 * a library, it can not be edited in the report design.
	 * 
	 * @return true if it can be edited. false if it can't.
	 */
	public boolean canEdit( )
	{
		boolean flag = getElement( ).canEdit( );
		if ( !flag )
			return false;
		return !getModule( ).isReadOnly( );
	}
	/**
	 * Determines if the current element can be transformed to a template
	 * element. False will be returned if the element can not be dropped or the
	 * container of the current element can not contain the template element.
	 * 
	 * @return true if it can be transformed, otherwise false.
	 */
	public boolean canTransformToTemplate( )
	{
		boolean flag = getElement( ).canTransformToTemplate( getModule( ) );
		if ( !flag )
			return false;
		return !getModule( ).isReadOnly( );
	}
	/**
	 * Determines if the slot can contain an element with the type of
	 * <code>type</code>.