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index.zulzul<window title="Main Window" width="600px" border="normal" apply="org.zkoss.bind.BindComposer"
viewModel="@id('vm') @init('pkg$.MainView')">
<label value="Model : "/>
<label value="@load(vm.viewData.model)"/>
<button label="Notify VM" onClick="@command('doClickButton')"/>
<div apply="org.zkoss.bind.BindComposer" style="width: 100%; padding:20px; margin-top:20px;" viewModel="@id('cvm1') @init('pkg$.ChildView1')">
<label value="Model : "/>
<label value="@load(cvm1.viewData.model)"/>
<button label="Notify cvm1" onClick="@command('doClickButton')"/>
</div>
<div apply="org.zkoss.bind.BindComposer" style="width: 100%; padding:20px; margin-top:20px;" viewModel="@id('cvm2') @init('pkg$.ChildView2')">
<label value="Model : "/>
<label value="@load(cvm2.viewData.model)"/>
<button label="Notify cvm2" onClick="@command('doClickButton')"/>
</div>
</window>
MainView.javajava
import java.util.List;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.NotifyChange;
public class MainView {
private ViewData viewData = ViewDataPool.getInstance(ViewData.class);
public ViewData getViewData(){
return this.viewData;
}
}ViewData.javajava/** State Bean **/
public class ViewData {
private Integer id;
private String model;
private String make;
private String preview;
private String description;
private Integer price;
public ViewData() {
}
public ViewData(Integer id, String model, String make, String description, String preview, Integer price) {
this.id = id;
this.model = model;
this.make = make;
this.preview = preview;
this.description = description;
this.price = price;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getMake() {
return make;
}
public void setMake(String make) {
this.make = make;
}
public String getPreview() {
return preview;
}
public void setPreview(String preview) {
this.preview = preview;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Integer getPrice() {
return price;
}
public void setPrice(Integer price) {
this.price = price;
}
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
}ViewDataPool.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 static final class ViewDataPool {
private final ArrayList<ViewData> pool = new ArrayList<ViewData>();
@SuppressWarnings("unchecked")
public <T extends ViewData> T getInstance(Class<T> type) {
// Look for an EXACT class match in pool (ignore inheritance)
for (int ix = 0; ix < pool.size(); ix++) {
ViewData viewData = pool.get(ix);
if (viewData.getClass().equals(type))
return (T) viewData;
}
// Otherwise create a new instance and add it to the pool
try {
T viewData = type.newInstance();
pool.add(viewData);
return viewData;
} catch (Exception e) {
Logger.error(e);
throw new RuntimeException("Could not instantiate object of type '" + type.getName() + "' as there is no accessible no arg constructor");
}
}
public void clear() {
pool.clear();
}
}
ChildView1.javajava
import java.util.List;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.NotifyChange;
public class ChildView1 {
private ViewData viewData = ViewDataPool.getInstance(ViewData.class);
public ViewData getViewData(){
return this.viewData;
}
}ChildView2.javajava
import java.util.List;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.NotifyChange;
public class ChildView2 {
private ViewData viewData = ViewDataPool.getInstance(ViewData.class);
public ViewData getViewData(){
return this.viewData;
}
}