ZK Spreadsheet App: NPE when focus on formulabar editor with a no book Spreadsheet

[GoogleCodeExporter]

What steps will reproduce the problem?
1. start zssapp
2. press the "X" close mark on the right top corner to close the current book
3. click on the formula bar editor

What is the expected output? What do you see instead?
Expect: nothing happen
Real: NPE

---
SEVERE: >>java.lang.NullPointerException
>>  at org.zkoss.zss.ui.impl.Utils.getCell(Utils.java:682)
>>  at org.zkoss.zss.app.zul.FormulaEditor.onFocus(FormulaEditor.java:85)
>>  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>  at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>  at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav
a:25)
>>  at java.lang.reflect.Method.invoke(Method.java:597)
>>  at org.zkoss.zk.ui.impl.EventProcessor.process0(EventProcessor.java:195)
>>  at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:138)
>>  at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1603)
>>  at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1387)
>>...
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Original issue reported on code.google.com by chenhe...@gmail.com on 30 Dec 2010 at 12:55

[GoogleCodeExporter]

Fixed since Dec. 30, 2010.

Original comment by chenhe...@gmail.com on 30 Dec 2010 at 1:03

• Changed state: Fixed

[GoogleCodeExporter]

Original comment by chenhe...@gmail.com on 30 Dec 2010 at 3:04

• Changed title: ZK Spreadsheet App: NPE when focus on formulabar editor with a no book Spreadsheet