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index.zulzul<zk>
<window border="normal" title="Dependent components" apply="org.zkoss.bind.BindComposer"
viewModel="@id('vm') @init('pkg$.DependencyViewModel')">
<checkbox checked="@bind(vm.infoFromComboboxesRequired)" label="require comboboxes ?"
onCheck="@command('flagChecked')"/>
<combobox model="@load(vm.comboModel1)" visible="@load(vm.infoFromComboboxesRequired)" autodrop="true"
selectedItem="@bind(vm.comboValue1)" onOpen="@command('combo1Selected',selected=self)">
<template name="model">
<comboitem label="@load(each)" value="@load(each)"/>
</template>
</combobox>
<combobox model="@load(vm.comboModel2)" visible="@load(vm.infoFromComboboxesRequired)"
selectedItem="@bind(vm.comboValue2)" onSelect="@command('combo2Selected')">
<template name="model">
<comboitem label="@load(each)" value="@load(each)"/>
</template>
</combobox>
</window>
</zk>DependencyViewModel.javajavaimport org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.Init;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.zk.ui.util.Clients;
import org.zkoss.zul.ListModel;
import org.zkoss.zul.ListModelList;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.InputEvent;
import org.zkoss.zk.ui.event.OpenEvent;
import org.zkoss.zul.Combobox;
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.ContextType;
import org.zkoss.bind.annotation.ContextParam;
public class DependencyViewModel {
boolean infoFromComboboxesRequired = false;
ListModelList<String> comboModel1;
ListModelList<String> comboModel2;
String comboValue1;
String comboValue2;
@Init
public void init() {
comboModel1 = new ListModelList<String>();
comboModel2 = new ListModelList<String>();
}
@Command("flagChecked")
@NotifyChange({"comboModel1", "comboModel2"})
public void onFlagChecked() {
comboModel1.clear();
comboModel2.clear();
comboValue1 = null;
}
@Command("combo1Selected")
@NotifyChange("comboModel2")
public void onCombo1Selected(@ContextParam(ContextType.TRIGGER_EVENT) Event e, @BindingParam("selected") Combobox streetCombo) {
if (e instanceof OpenEvent && !((OpenEvent) e).isOpen()) {
Clients.showNotification("selected combo 1 : " + streetCombo.getSelectedItem().getValue());
comboModel2.clear();
}
}
@Command("combo2Selected")
@NotifyChange("comboModel2")
public void onCombo2Selected() {
Clients.showNotification("selected combo 2 : " + comboValue2);
}
public ListModel<String> getComboModel1() {
if(infoFromComboboxesRequired) {
comboModel1.add("aaaa");
comboModel1.add("aaba");
comboModel1.add("aaav");
comboModel1.add("bbbb");
comboModel1.add("cccc");
comboModel1.add("dddd");
comboModel1.add("eeee");
}
return comboModel1;
}
public ListModel<String> getComboModel2() {
if(infoFromComboboxesRequired && comboValue1 != null) {
comboModel2.add(this.comboValue1 + "1111");
comboModel2.add(this.comboValue1 + "2222");
comboModel2.add(this.comboValue1 + "3333");
comboModel2.add(this.comboValue1 + "4444");
comboModel2.add(this.comboValue1 + "5555");
}
return comboModel2;
}
public boolean isInfoFromComboboxesRequired() {
return infoFromComboboxesRequired;
}
public void setInfoFromComboboxesRequired(boolean infoFromComboboxesRequired) {
this.infoFromComboboxesRequired = infoFromComboboxesRequired;
}
public String getComboValue1() {
return comboValue1;
}
public void setComboValue1(String comboValue1) {
this.comboValue1 = comboValue1;
}
public String getComboValue2() {
return comboValue2;
}
public void setComboValue2(String comboValue2) {
this.comboValue2 = comboValue2;
}
}