Bug 39074 [CellEditors] [DBCS] canna input mode fires bogus event from Text Control
Steps: 1)Create simple file named foo.usr. 2)Open the propertysheet example editor on this file. 3)Select a department (or group or whatever) and go to edit the name of that object in the propertysheet 4) Shift+SPACE to enter canno input mode. 5) Type "nihongo" and press ENTER When you press ENTER, the propertysheet receives either a bogus widgetDefaultSelected event, or a bogus focusLost event. In either case, the entered canna text is lost. This affects anyone who displays a popup celleditor and is interested in the events mentioned above. This bug affects multiple GEF clients in WSAD
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TextCellEditor.java
* The <code>TextCellEditor</code>  implementation of this 
 * <code>CellEditor</code> method always returns <code>true</code>.
 */
public boolean isSaveAllEnabled() {
	if (text == null || text.isDisposed())
		return false;
	return true;
}
/**
 * Returns <code>true</code> if this cell editor is
 * able to perform the select all action.
 * <p>
 * This default implementation always returns 
 * <code>false</code>.
 * </p>
 * <p>
 * Subclasses may override
 * </p>
 * @return <code>true</code> if select all is possible,
 *  <code>false</code> otherwise
 */
public boolean isSelectAllEnabled() {
	if (text == null || text.isDisposed())
		return false;
	return text.getCharCount() > 0;
}
/**
 * The <code>TextCellEditor</code> implementation of this
 * <code>CellEditor</code> method copies the
 * current selection to the clipboard.