Bug 132652 Click other property will cause the previous revised value lost in Properties sheet.
Description: Click other property will cause the previous revised value lost in Properties sheet. Steps to reproduce: 1. Insert a label 2. Open Properties sheet, select the label. 3. Input 10pt in Margin left, then click Margin right. Expected result: 10pt is saved. Actual result: 10pt was lost.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/swt/custom/CCombo.java
*
* @return the number of items in the widget
*
* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
*	when called from the wrong thread
* @exception SWTError(ERROR_WIDGET_DISPOSED)
*	when the widget has been disposed
* @exception SWTError(ERROR_CANNOT_GET_COUNT)
*	when the operation fails
*/
public int getItemCount () {
	checkWidget();
	return list.getItemCount ();
}
/**
* Gets the height of one item.
* <p>
* This operation will fail if the height of
* one item could not be queried from the OS.
*
* @return the height of one item in the widget
*
* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
*	when called from the wrong thread
* @exception SWTError(ERROR_WIDGET_DISPOSED)
*	when the widget has been disposed
* @exception SWTError(ERROR_CANNOT_GET_ITEM_HEIGHT)
*	when the operation fails
*/
public int getItemHeight () {