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index.zulzul<zk>
<window border="normal" title="hello" apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('pkg$.VisiteClasseVM')">
<div>
<vlayout form="@id('fx') @load(vm.selected) @save(vm.selected, before={'saveAndAdd1', 'saveAndAdd2'}) @load(vm.selected, after={'saveAndAdd1','saveAndAdd2'})">
<hlayout>
<label value="Some text of data"/>
<textbox value="@bind(fx.text)"/>
</hlayout>
<hlayout>
<label value="List of elements of data"/>
<listbox model="@bind(fx.elements)"
multiple="true"
selectedItems="@bind(vm.selectedElements)">
<template name="model" var="item">
<listitem>
<listcell label="@load(item.elem)"/>
</listitem>
</template>
</listbox>
</hlayout>
<hlayout>
<label value="size of selection"/>
<label value="@load(vm.selectedElements.size())"/>
</hlayout>
<hlayout>
<label value="current selection"/>
<label value="@load(vm.currentSelection)"/>
</hlayout>
<button label="remove" onClick="@command('removeSelected', fx=fx)"/>
<button label="saveAndAdd1" onClick="@command('saveAndAdd1')"/>
<button label="saveAndAdd2" onClick="@command('saveAndAdd2')"/>
</vlayout>
</div>
</window>
</zk>
VisiteClasseVM.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 org.zkoss.bind.annotation.*;
import org.zkoss.bind.*;
import java.util.*;
import java.util.stream.*;
public class VisiteClasseVM{
private Data selected = null;
public Data getSelected() {
return selected;
}
public void setSelected(Data data) {
this.selected = data;
}
private Set<Elem> selectedElements = new HashSet<>();
public Set<Elem> getSelectedElements() {
return selectedElements;
}
public void setSelectedElements(Set<Elem> selectedElementsSet) {
this.selectedElements = selectedElementsSet;
}
@DependsOn({"selectedElements"})
public String getCurrentSelection() {
return selectedElements.stream().map(e -> e.getElem()).collect(Collectors.joining(","));
}
@Init
public void init() {
selected = new Data();
selected.addElement(new Elem("1"));
selected.addElement(new Elem("2"));
selected.addElement(new Elem("3"));
selected.addElement(new Elem("4"));
}
@Command
@NotifyChange({"selectedElements"})
public void removeSelected(@BindingParam("fx") Data form) {
form.getElements().removeAll(selectedElements);
BindUtils.postNotifyChange(null, null, form, "elements");
selectedElements.clear();
}
@Command
@NotifyChange({"selectedElements","selected"})
public void saveAndAdd1() {
selected.setText("saved1");
Elem newElem = new Elem("new");
selected.addElement(newElem);
selectedElements.add(newElem);
}
@Command
@NotifyChange({"selected", "selectedElements"})
public void saveAndAdd2() {
selected.setText("saved2");
Elem newElem1 = new Elem("new1");
Elem newElem2 = new Elem("new2");
selected.addElement(newElem1);
selected.addElement(newElem2);
selectedElements.add(newElem1);
selectedElements.add(newElem2);
}
}
Data.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.*;
public class Data {
public Data() {
this.text = "new";
}
private String text;
private List<Elem> elements = new LinkedList<>();
public void addElement(Elem elem) {
this.elements.add(elem);
}
public List<Elem> getElements() {
return this.elements;
}
public String getText() {
return text;
}
public void setText(String aText) {
this.text=aText;
}
}
Elem.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.*;
public class Elem {
public Elem() {
this.elem="";
}
public Elem(String txt) {
this.elem=txt;
}
private String elem;
public String getElem() {
return elem;
}
public void setElem(String anElem) {
this.elem=anElem;
}
public boolean equals(Object obj) {
if (obj instanceof Elem) {
Elem o = (Elem) obj;
return Objects.equals(o.getElem(), getElem());
} else return false;
}
public int hashCode() {
if (getElem() != null) return getElem().hashCode();
else return 0;
}
}