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index.zulzul<zk>
<div height="600px" width="600px"
viewModel="@id('vm') @init('pkg$.EntityLocationTreeViewModel')">
<button label="toggle" onClick="@command('toggle')"/>
<button label="refresh" onClick="@command('refresh')"/>
<button label="remove" onClick="@command('remove')"/>
<checkbox checked="@load(vm.show)"></checkbox>
<if test="@load(vm.show)">
<tree model="@load(vm.treeModel)" renderdefer="100" hflex="1" id="tree" height="500px" onCreate='Events.echoEvent(new Event("onFoo", self));'
onFoo="@command('refresh')">
<custom-attributes org.zkoss.zul.tree.maxRodPageSize="5" />
<treecols>
<treecol width="85%"></treecol>
<treecol width="15%"></treecol>
</treecols>
<template name="model">
<!-- <treeitem onCreate="self.getTree().getModel().addOpenObject(self.getValue());"> -->
<treeitem open="true" onClick="@command('update',target=each)">
<treerow>
<treecell>
<label
value="@load(each)" >
</label>
</treecell>
</treerow>
</treeitem>
</template>
</tree>
</if>
</div>
</zk>EntityLocationTreeViewModel.javajava
import java.util.Collections;
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.Init;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zul.DefaultTreeModel;
import org.zkoss.zul.DefaultTreeNode;
import org.zkoss.zul.TreeNode;
public class EntityLocationTreeViewModel {
private boolean show;
private DefaultTreeModel treeModel;
public DefaultTreeModel getTreeModel() {
return treeModel;
}
public void setTreeModel(DefaultTreeModel treeModel) {
this.treeModel = treeModel;
}
@Init
public void init() {
DefaultTreeNode root = new DefaultTreeNode<>("root", Collections.emptyList());
treeModel = new DefaultTreeModel(root);
recursivelyFillNodes(root, "item-", 3);
this.show = true;
}
private void recursivelyFillNodes(DefaultTreeNode node, String label, int i) {
for (int j = 0; j < 5; j++) {
DefaultTreeNode child = new DefaultTreeNode(label+j, Collections.emptyList());
node.add(child);
treeModel.addOpenObject(child);
if(i>0)
recursivelyFillNodes(child, (String)child.getData(), i-1);
}
}
public boolean isShow() {
return show;
}
public void setShow(boolean show) {
this.show = show;
}
@NotifyChange("*")
@Command
public void refresh() {
}
@NotifyChange("show")
@Command
public void toggle() {
show = !show;
System.out.println("toggle " + (show?"true":"false"));
}
@NotifyChange("show")
@Command
public void remove() {
DefaultTreeNode root = (DefaultTreeNode) treeModel.getRoot();
TreeNode child = root.getChildAt(0);
root.remove(child);
}
@Command
public void update(@BindingParam("target") DefaultTreeNode target) {
target.setData(target.getData()+"-foo");
}
}