Bug 172273 Grid insert to masterpage dosen't display propertily [05]
Build Number: 2.2.0.v20070131-1050 Description: As the screenshot, insert a grid (3*3) in the master page.It can't be display propertily. Step to reproduce: 1. new a report and switch to masterpage 2. insert a grid (3*3) Actual result: Please refer to the screenshot, it's abnormal.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
*            the element to find
	 * @return the number of the slot that contains the element, or -1 if this
	 *         element does not contain the content element.
	 */
	public int findSlotOf( DesignElement content )
	{
		if ( content == null || content.getContainer( ) != this )
			return NO_SLOT;
		return content.getContainerInfo( ).getSlotID( );
	}
	/**
	 * Checks whether the property of current element is editable.
	 * 
	 * @param module
	 * 
	 * @return <code>true</code> if the property of current element is
	 *         editable. Otherwise <code>false</code>.
	 */
	public boolean canEdit( Module module )
	{
		if ( isRootIncludedByModule( )
				|| ( module != null && module.isReadOnly( ) ) )
			return false;
		return true;
	}
	/**
	 * Determines if this element can be dropped from its container.
	 * 
	 * @param module
	 *