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Hello,
If i use EL-expressions, the model:group works as expexted and described in documentation.
<zk>
<zscript><![CDATA[
String[][] datas = new String[][]
{
new String[]
{ //group 1, Today
"RE: Bandbox Autocomplete Problem",
"RE: It's not possible to navigate a listbox' ite",
"RE: FileUpload"
},
new String[]
{ //group 2, Yesterday
"RE: Opening more than one new browser window",
"RE: SelectedItemConverter Question"
},
new String[]
{ //group 3, Last Week
"RE: Times_Series Chart help",
"RE: SelectedItemConverter Question"
}
};
GroupsModel fooGroupsModel= new SimpleGroupsModel(datas, new String[]{"Date: Today", "Date: Yesterday", "Date: Last Week"});
]]></zscript>
<window id="win" title="Window 1" border="normal" width="600px">
<listbox model="${fooGroupsModel}">
<template name="model:group">
<listgroup open="${groupingInfo.open}" label="${each}"/>
</template>
<template name="model">
<listitem>
<listcell label="${each}"/>
</listitem>
</template>
</listbox>
</window>
</zk>
So far, so good.
How can i achieve this behaviour with the new ZK6 bind mechanism? The code below does not interpret model:group corrrectly.
<zk>
<zscript><![CDATA[
String[][] datas = new String[][]
{
new String[]
{ //group 1, Today
"RE: Bandbox Autocomplete Problem",
"RE: It's not possible to navigate a listbox' ite",
"RE: FileUpload"
},
new String[]
{ //group 2, Yesterday
"RE: Opening more than one new browser window",
"RE: SelectedItemConverter Question"
},
new String[]
{ //group 3, Last Week
"RE: Times_Series Chart help",
"RE: SelectedItemConverter Question"
}
};
class VM
{
GroupsModel fooGroupsModel= new SimpleGroupsModel(datas, new String[]{"Date: Today", "Date: Yesterday", "Date: Last Week"});
public GroupsModel getGroupsModel() { return fooGroupsModel; }
}
]]></zscript>
<window id="win" title="Window 1" border="normal" width="600px"
apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('VM')" >
<listbox model="@bind(vm.groupsModel)">
<template name="model:group">
<listgroup open="@bind(groupingInfo.open)" label="@load(each)"/>
</template>
<template name="model">
<listitem>
<listcell label="@load(each)"/>
</listitem>
</template>
</listbox>
</window>
</zk>
Further questions is, how can i combine ZK 6 bind syntax with extended capabilities, such as possible with conventional EL expressions?
works <listcell><label value="${c:cat3('[', each, ']')}"/></listcell>
not works <listcell><label value="@load(c:cat3('[', each, ']'))"/></listcell>
Kai
I have tested this code in ZK Fiddle with ZK 6.0.1 and now the group information correctly interpreted. However, the group label is still not shown. I suspect that "each" at the time of evaluating an object of type ReferenceBindingImpl.
Kai
I don't think current zul annotation support this approach:
<listcell><label value="@load(c:cat3('[', each, ']'))"/></listcell>
Have you take a look at this example yet?
http://www.zkoss.org/zkdemo/grid/grouping_model
If I use the SimpleGroupsModel with a grid, as shown in the example, everything works without problems.
Only the groups in listbox will not display correctly. It is also thrown an IllegalArgumentException
>>org.zkoss.zel.ELException: java.lang.IllegalArgumentException
>>java.lang.IllegalArgumentException
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>> at java.lang.reflect.Method.invoke(Method.java:597)
>> at org.zkoss.zel.BeanELResolver.setValue(BeanELResolver.java:139)
>> at org.zkoss.zel.CompositeELResolver.setValue(CompositeELResolver.java:83)
>> at org.zkoss.zel.CompositeELResolver.setValue(CompositeELResolver.java:83)
>> at org.zkoss.xel.zel.XelELResolver.setValue(XelELResolver.java:114)
>> at org.zkoss.bind.xel.zel.BindELResolver.setValue(BindELResolver.java:102)
>> at org.zkoss.zel.impl.parser.AstValue.setValue(AstValue.java:215)
>> at org.zkoss.zel.impl.ValueExpressionImpl.setValue(ValueExpressionImpl.java:256)
>> at org.zkoss.xel.zel.ELXelExpression.setValue(ELXelExpression.java:50)
>> at org.zkoss.bind.impl.BindEvaluatorXImpl.setValue(BindEvaluatorXImpl.java:50)
>> at org.zkoss.bind.impl.LoadPropertyBindingImpl.load(LoadPropertyBindingImpl.java:81)
>> at org.zkoss.bind.impl.PropertyBindingHandler.doLoadBinding(PropertyBindingHandler.java:171)
>> at org.zkoss.bind.impl.PropertyBindingHandler.doLoad(PropertyBindingHandler.java:372)
>> at org.zkoss.bind.impl.BinderImpl.loadComponentProperties(BinderImpl.java:1865)
>> at org.zkoss.bind.impl.BinderImpl.loadComponent(BinderImpl.java:1847)
>> at org.zkoss.bind.tracker.impl.BindUiLifeCycle$1.onEvent(BindUiLifeCycle.java:63)
>> at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2736)
>> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2685)
>> at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2648)
>> at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136)
>> at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1702)
>> at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1487)
>> at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:463)
>> at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:316)
>> at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:215)
>> at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:135)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
>> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
>> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
>> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
>> at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
>> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
>> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
>> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
>> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
>> at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269)
>> at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
>> at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300)
>> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>> at java.lang.Thread.run(Thread.java:619)
Kai
this is a bug, groupInfo is not supported yet in bind , and the exception was cause by assign a NULL (groupingInfo.open) to a primitive boolean type .
I posted a bug at http://tracker.zkoss.org/browse/ZK-1207, please follow it if you want.
OK thank you Dennis, now I know about this error. In the meantime, I avoid the problem by using dynamic templates.
Kai
<zk>
<zscript><![CDATA[
ListModel lm= new ListModelList();
class A
{
public A(String s, Long v, Boolean is_group) { s_= s; v_= v; is_group_= is_group; }
public String getData() { return s_; }
public Boolean isGroup() { return is_group_; }
public Long getValue() { return v_; }
String s_= null;
Long v_= null;
Boolean is_group_= null;
}
lm.add(new A("Today", 1L, Boolean.TRUE));
lm.add(new A("RE: Bandbox Autocomplete Problem", 2L, Boolean.FALSE));
lm.add(new A("RE: It's not possible to navigate a listbox' ite", 3L, Boolean.FALSE));
lm.add(new A("RE: FileUpload", 4L, Boolean.FALSE));
lm.add(new A("Yesterday", 10L, Boolean.TRUE));
lm.add(new A("RE: Opening more than one new browser window", 11L, Boolean.FALSE));
lm.add(new A("RE: SelectedItemConverter Question' ite", 12L, Boolean.FALSE));
lm.add(new A("Last week", 100L, Boolean.TRUE));
lm.add(new A("RE: Times_Series Chart help", 101L, Boolean.FALSE));
lm.add(new A("RE: SelectedItemConverter Question", 102L, Boolean.FALSE));
class VM
{
public ListModel getListModel() { return lm; }
}
]]></zscript>
<window id="win" title="Window ZK6 dynamic template" border="normal" width="600px"
apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('VM')" >
<listbox model="@bind(vm.listModel) @template(each.isGroup() ? 'group_model' : 'item_model')">
<listhead>
<listheader hflex="2" label="Column 1"/>
<listheader hflex="1" label="Column 2"/>
</listhead>
<template name="group_model">
<listgroup open="true" label="@load(each.data)"/>
</template>
<template name="item_model">
<listitem vflex="1">
<listcell><label value="@load(each.data)"/></listcell>
<listcell><label value="@load(each.value)"/></listcell>
</listitem>
</template>
</listbox>
</window>
</zk>
Asked: 2012-04-27 07:40:52 +0800
Seen: 555 times
Last updated: Jun 22 '12