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
}
public void setToolTipText (String string) {
	checkWidget();
	super.setToolTipText(string);
	arrow.setToolTipText (string);
	text.setToolTipText (string);		
}
public void setVisible (boolean visible) {
	super.setVisible(visible);
	if (!visible) popup.setVisible(false);
}
/**
 * Sets the number of items that are visible in the drop
 * down portion of the receiver's list.
 *
 * @param count the new number of items to be visible
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 * 
 * @since 3.0
 */
public void setVisibleItemCount (int count) {
	checkWidget ();
	if (count < 0) return;
	visibleItemCount = count;
}
void textEvent (Event event) {