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Type:
Bug
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Resolution: Fixed
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Priority:
Normal
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Affects Version/s: 6.5.8.1, 9.5.0.2
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Component/s: Components
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Security Level: Jimmy
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None
Steps to Reproduce
run the code below:
<zk> <tree id="tree"/> <zscript><![CDATA[ tree.setModel(new DefaultTreeModel(new DefaultTreeNode("root"))); tree.setModel(null); ]]></zscript> </zk>
Current Result
15:36:35.919 [qtp122114483-23] ERROR org.zkoss.zk.ui.impl.UiEngineImpl - java.lang.NullPointerException: null at org.zkoss.zul.Tree.renderTree(Tree.java:1990) at org.zkoss.zul.Tree.onInitRender(Tree.java:1870) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:3165) at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:3096) at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:138) at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1890) at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1662) at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:556) at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:377) at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:220) ...
Expected Result
no exception, render empty tree
