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index.zulzul<zk>
<hlayout width="100%">
<div viewModel="@id('vm')@init('pkg$.ViewModel')" hflex="1">
<button label="add row" onClick="@command('addRow')"/>
<listbox checkmark="true" multiple="true"
model="@load((vm.listModel.stream().filter(item -> item.prop3 le 10).toList()))"
selectedItems="@bind(vm.selectedItems)"
height="300px" mold="paging">
<template name="model">
<apply template="listitem1" />
</template>
</listbox>
</div>
</hlayout>
<template name="listitem1">
<listitem focus="@load(self.selected)" draggable="true" droppable="@load(self.draggable)" onDrop="@command('drop')"
>
<apply template="listcell11" />
<apply template="listcell12" />
</listitem>
</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.zul.ListModelList;
import org.zkoss.zk.ui.util.*;
import java.util.*;
public class ViewModel {
private ListModelList<MyBean> listModel;
private Set<MyBean> selectedItems = new HashSet<>();
@Init
public void init() {
listModel = new ListModelList<MyBean>();
listModel.setMultiple(true);
for (int i=1; i < 40 ; i++) {
listModel.add(new MyBean("left-item-" + i, i));
}
selectedItems.clear();
selectedItems.add(listModel.get(8));
}
@GlobalCommand
public void refreshModel() {
org.zkoss.zul.Messagebox.show("refreshing left model");
Set<MyBean> cache = new HashSet<>(selectedItems);
init(); // similuate re-load from db
selectedItems = cache; // set previous selection
BindUtils.postNotifyChange(null, null, this, "selectedItems");
BindUtils.postNotifyChange(null, null, this, "listModel");
}
@Command
public void addRow() {
int index = listModel.size() + 1;
MyBean bean = new MyBean("new-left-item-" + index, index);
listModel.add(bean);
getSelectedItems().clear();
getSelectedItems().add(bean);
BindUtils.postGlobalCommand(null, null, "refreshModel2", Collections.emptyMap());
BindUtils.postGlobalCommand(null, null, "refreshTreeModel", Collections.emptyMap());
}
@Command
public void drop()
{
}
public ListModelList<MyBean> getListModel() {
return listModel;
}
public Set<MyBean> getSelectedItems() {
return selectedItems;
}
public void setSelectedItems(Set<MyBean> set) {
selectedItems = set;
Clients.log(set.toString());
}
public boolean isItemSelected(MyBean bean) {
return getSelectedItems().contains(bean);
}
}
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());
}
}