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index.zulzul<zk>
<window border="none" vflex="1" apply="org.zkoss.bind.BindComposer"
viewModel="@id('vm') @init('pkg$.MainVM')">
<vlayout vflex="1">
<button label="Long action" onClick="@command('longAction')" />
<hlayout hflex="1">
<listbox checkmark="true" multiple="true" hflex="10" vflex="1"
model="@load(vm.model)" onSelect="@command('handleSelect')" selectedItems="@load(vm.selection)">
<custom-attributes org.zkoss.zul.listbox.checkmarkDeselectOthers="true" />
<template name="model">
<listitem value="@load(each)" label="@load(each)" />
</template>
</listbox>
<vlayout hflex="3">
<label value="Set Selection Stack:" />
<label value="@load(vm.stack)" multiline="true" />
</vlayout>
</hlayout>
<hlayout hflex="1">
<label value="Current selection:" />
<label value="@load(vm.selectionLabel)" />
</hlayout>
</vlayout>
</window>
</zk>
MainVM.javajavaimport java.util.*;
import org.zkoss.bind.annotation.*;
import org.zkoss.util.media.Media;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.UploadEvent;
import org.zkoss.zul.*;
import org.zkoss.bind.*;
import org.zkoss.zk.ui.*;
public class MainVM {
final DataBeanModel model = new DataBeanModel(Arrays.asList(new DataBean(1, "Auto"), new DataBean(2, "Telephone"), new DataBean(3, "Zeppelin")));
Set<DataBean> selection = new HashSet();
int index = 0;
@Init
public void init() {
org.zkoss.zkmax.ui.util.Toast.show("VM init");
}
public DataBeanModel getModel() {
return model;
}
public Set<DataBean> getSelection() {
return selection;
}
public void setSelection(Set<DataBean> selection) {
this.selection = selection;
}
@DependsOn("selection")
public String getSelectionLabel() {
return Arrays.toString(selection.toArray());
}
@DependsOn("selection")
public String getStack() {
return model.getStack();
}
@NotifyChange("selection")
@Command
public void handleSelect() {
this.setSelection(model.getSelection()); //data direction from model to VM, then from binder to model
}
@Command
public void longAction() throws InterruptedException {
getSelection().forEach(sel -> {
//sel.setLabel(java.util.UUID.randomUUID().toString());
sel.incIndex();
//model.notifyChange(sel);
});
java.util.concurrent.CountDownLatch cdl = new java.util.concurrent.CountDownLatch(1);
cdl.await(5, java.util.concurrent.TimeUnit.SECONDS);
BindUtils.postNotifyChange(null, null, this, "selection");
BindUtils.postNotifyChange(null, null, this, "model");
}
}
DataBean.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.*;
public class DataBean {
private int id;
private String label;
private int index = 0;
public DataBean(int id, String label) {
this.id = id;
this.label = label;
}
public int getId() {
return id;
}
public String getLabel() {
return index <= 0 ? label : label + index;
}
public void setLabel(String label) {
this.label = label;
}
public void incIndex() {
index++;;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + id;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
DataBean other = (DataBean) obj;
if (id != other.id)
return false;
return true;
}
@Override
public String toString() {
return getLabel();
}
}DataBeanModel.javajava
import java.util.Collection;
import org.zkoss.zul.ListModelList;
public class DataBeanModel extends ListModelList<DataBean> {
private static final long serialVersionUID = 1L;
final StringBuilder stack = new StringBuilder();
int index = 0;
public DataBeanModel() {
setMultiple(true);
}
public DataBeanModel(final Collection<DataBean> c) {
super(c);
setMultiple(true);
}
public String getStack() {
return stack.toString();
}
@Override
public void setSelection(final Collection<? extends DataBean> selection) {
//stack.append((++index) + "\n");
if (selection.isEmpty()) {
stack.append("empty\n");
}
else {
selection.forEach(sel -> stack.append(sel + "\n"));
}
stack.append("-------------------------\n");
super.setSelection(selection);
}
@Override
public void clearSelection() {
stack.append("clear selection\n");
super.clearSelection();
}
}