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index.zulzul<zk>
<hlayout width="100%">
<div viewModel="@id('vm')@init('pkg$.ViewModel')" hflex="1">
<hlayout>
<label value="Without shadows and templates"/>
<intbox zclass="z-paging-input" cols="4" value="@bind(vm.pageSize2)" forward="onOK=onChange" />
<label value="Items" />
</hlayout>
<listbox checkmark="true" multiple="true" mold="paging" model="@load(vm.listModel2)">
<custom-attributes org.zkoss.zul.listbox.rod="true"/>
<template name="model">
<listitem focus="@load(self.selected)">
<listcell label="@load(each.prop1)"/>
<listcell label="@load(each.prop3)"/>
</listitem>
</template>
</listbox>
</div>
<div viewModel="@id('vm')@init('pkg$.ViewModel')" hflex="1">
<hlayout>
<label value="With shadows and templates"/>
<intbox zclass="z-paging-input" cols="4" value="@bind(vm.pageSize1)" forward="onOK=onChange" />
<label value=" Items" />
</hlayout>
<listbox checkmark="true" multiple="true" mold="paging" model="@load(vm.listModel1)"
itemRenderer="${vm.renderer}">
<custom-attributes org.zkoss.zul.listbox.rod="true" camlineTemplateName="${vm.itemTemplate}" />
<template name="model">
<listitem focus="@load(self.selected)" >
<apply template="listitem1" />
</listitem>
</template>
</listbox>
</div>
</hlayout>
<template name="listitem1">
<apply template="listcell11" />
<apply template="listcell12" />
</template>
<template name="listcell11">
<listcell label="@load(each.prop1)"/>
</template>
<template name="listcell12">
<listcell label="@load(each.prop3)"/>
</template>
</zk>ViewModel.javajavaimport org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.GlobalCommand;
import org.zkoss.bind.BindUtils;
import org.zkoss.bind.annotation.Init;
import org.zkoss.zk.ui.util.*;
import java.util.*;
public class ViewModel {
private LiveListModel listModel1 = new LiveListModel();
private LiveListModel listModel2 = new LiveListModel();
private BindListitemRendererExt renderer;
@Init
public void init() {
listModel1.setMultiple(true);
listModel2.setMultiple(true);
}
public String getItemTemplate() {
return "listitem1";
}
public BindListitemRendererExt getRenderer() {
return renderer;
}
public LiveListModel getListModel1() {
return listModel1;
}
public LiveListModel getListModel2() {
return listModel2;
}
public int getPageSize1() {
return listModel1.getPageSize();
}
public void setPageSize1(int value) {
listModel1.setPageSize(value);
}
public int getPageSize2() {
return listModel2.getPageSize();
}
public void setPageSize2(int value) {
listModel2.setPageSize(value);
}
}
MyBean.javajavapublic class MyBean {
private String prop1;
private int prop3;
public MyBean(String prop1, int index) {
super();
this.prop1 = prop1;
this.prop3 = index;
}
public String getProp1() {
return prop1;
}
public void setProp1(String prop1) {
this.prop1 = prop1;
}
public int getProp3() {
return prop3;
}
public void setProp3(int prop3) {
this.prop3 = prop3;
}
public String toString () {
return getProp1() + "_" + hashCode();
}
public boolean equals(Object other) {
if (this == other)
return true;
if (other == null || getClass() != other.getClass())
return false;
return prop3 == ((MyBean) other).getProp3();
}
@Override
public int hashCode() {
return java.util.Objects.hash(getProp1(), getProp3());
}
}
LiveListModel.javajavaimport org.zkoss.zk.ui.*;
import org.zkoss.zk.ui.event.*;
import org.zkoss.zk.ui.util.*;
import org.zkoss.zk.ui.ext.*;
import org.zkoss.zk.au.*;
import org.zkoss.zk.au.out.*;
import org.zkoss.zul.*;
import java.util.HashMap;
import java.util.Map;
import org.zkoss.zk.ui.Execution;
import org.zkoss.zk.ui.Executions;
import org.zkoss.zul.AbstractListModel;
public class LiveListModel extends AbstractListModel<MyBean> {
private final static String CACHE_KEY= LiveListModel.class + "_cache";
private int pageSize = 20;
@Override
public MyBean getElementAt(final int index) {
Map<Integer, MyBean> cache = getCache();
MyBean target = cache.get(index);
if (target == null) {
//if cache doesn't contain target object, query a page size of data starting from the index
int indexKey = index;
for (int i=index; i < index+getPageSize() ; i++) {
target = new MyBean("left-item-" + i, i);
cache.put(indexKey, target);
indexKey++;
}
}
return target;
}
private Map<Integer, MyBean> getCache() {
Execution execution = Executions.getCurrent();
//we only reuse this cache in one execution to avoid accessing detached objects.
//our filter opens a session during a HTTP request
Map<Integer, MyBean> cache = (Map) execution.getAttribute(CACHE_KEY);
if (cache == null) {
cache = new HashMap<>();
execution.setAttribute(CACHE_KEY, cache);
}
return cache;
}
@Override
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
super.setPageSize(this.pageSize=pageSize);
}
@Override
public int getSize() {
return 400000;
}
// rest of the class body
}
BindListitemRendererExt.javajavaimport org.zkoss.bind.impl.BindListitemRenderer;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.util.Template;
public class BindListitemRendererExt extends BindListitemRenderer {
@Override
protected Template resolveTemplate(Component templateComp, Component comp, Object data, int index, int size,
String defaultName, String subType) {
String modelTemplate = (String) templateComp.getAttribute("camlineTemplateName");
if(null != modelTemplate) {
if(templateComp.getTemplate(modelTemplate) != null)
return templateComp.getTemplate(modelTemplate);
if(templateComp.getPage().getTemplate(modelTemplate) != null)
return templateComp.getPage().getTemplate(modelTemplate);
}
return super.resolveTemplate(templateComp, comp, data, index, size, defaultName, subType);
}
}