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index.zulzul<zk>
<!-- <script><![CDATA[
zk.afterLoad("zkmax.inp", function () {
var _xCascader = {};
zk.override(zkmax.inp.Cascader.prototype, _xCascader, {
bind_: function bind_() {
this.$supers(zkmax.inp.Cascader, 'bind_', arguments);
jq(this.$n()).on('focusin', this.proxy(this._focusinContent)).on('focusout', this.proxy(this._focusoutContent));
jq(this.$n('pp')).on('mousedown', ".".concat(this.$s('item')), this._doItemMouseDown.bind(this)).on('click', ".".concat(this.$s('item')), this._doItemClick.bind(this)); // handle icon
if (this._selectedUuids.length > 0) //selection is not empty
this._updateIconClass('x');else {
jq(this.$n('label')).css('display', 'none');
jq(this.$n('placeholder')).css('display', 'inline-block');
}
zWatch.listen({
onFloatUp: this,
onResponse: this,
onSize: this
});
}
});
});
]]></script> -->
<window border="normal" title="Cascader selection Problem" viewModel="@id('vm') @init('pkg$.CascaderVM')">
<vlayout>
<apply template="cascade" seq="@load(vm.seq)" />
<hlayout>
<label value="VM Selected:"></label>
<label value="@load(vm.selected)" />
</hlayout>
</vlayout>
<button label="Refresh" onClick="@command('refreshTemplate')" />
</window>
<template name="cascade">
<label value="${seq}"/>
<label value="${vm.selected}"/>
<cascader width="350px" model="@load(vm.model)" selectedItem="@bind(vm.selected)"
itemConverter="@init(vm.itemConverter)" itemRenderer="@init(vm.itemRenderer)" />
</template>
</zk>
CascaderVM.javajava
import java.util.Collection;
import java.util.stream.Collectors;
import org.zkoss.bind.BindUtils;
import org.zkoss.bind.Converter;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.Init;
import org.zkoss.zkmax.ui.util.Toast;
import org.zkoss.zul.DefaultTreeModel;
import org.zkoss.zul.ItemRenderer;
import org.zkoss.zul.TreeNode;
public class CascaderVM {
private Object selected;
private int seq = 0;
private final DefaultTreeModel<MyNodeData> model = CascaderData.buildModel();
public org.zkoss.util.Converter<Collection<TreeNode<MyNodeData>>, String> getItemConverter() {
return nodePath -> nodePath.stream().map(node -> node.getData().getLabel())
.collect(Collectors.joining(" > "));
}
public ItemRenderer<TreeNode<MyNodeData>> getItemRenderer() {
return (component, data, i) -> data.getData().getLabel();
}
public DefaultTreeModel<MyNodeData> getModel() {
return model;
}
public Object getSelected() {
return selected;
}
public void setSelected(final Object selected) {
this.selected = selected;
org.zkoss.zkmax.ui.util.Toast.show("setSelected(" + selected + ")");
}
@org.zkoss.bind.annotation.Command
public void refreshTemplate() {
seq++;
org.zkoss.zkmax.ui.util.Toast.show("refresh clicked. seq=" + seq + "; selected=" + selected + "; model.selected=" + model.getSelection());
org.zkoss.bind.BindUtils.postNotifyChange(this, "seq");
}
@Init
public void init() {
setSelected(model.getRoot().getChildAt(2));
}
public int getSeq() {
return seq;
}
}CascaderData.javajava
import org.zkoss.zul.DefaultTreeModel;
import org.zkoss.zul.DefaultTreeNode;
import java.util.List;
import static java.util.Arrays.asList;
public class CascaderData {
public static DefaultTreeModel<MyNodeData> buildModel() {
org.zkoss.zkmax.ui.util.Toast.show("building model");
return new DefaultTreeModel<>(node("root", asList(
node("Node-1"),
node("Node-2", asList(
node("Node-2.1"),
node("Node-2.2", asList(
node("Node-2.2.1"),
node("Node-2.2.2"),
node("Node-2.2.3"),
node("Node-2.2.4"),
node("Node-2.2.5"))
),
node("Node-2.3", asList(
node("Node-2.3.1"),
node("Node-2.3.2", asList(
node("Node-2.3.2.1"),
node("Node-2.3.2.2"))
),
node("Node-2.3.3"))
),
node("Node-2.4"))
),
node("Node-3"),
node("Node-4"))
));
}
private static DefaultTreeNode<MyNodeData> node(String label) {
return new DefaultTreeNode<>(new MyNodeData(label));
}
private static DefaultTreeNode<MyNodeData> node(String label, List<DefaultTreeNode<MyNodeData>> children) {
return new DefaultTreeNode<>(new MyNodeData(label), children);
}
}MyNodeData.javajavapublic class MyNodeData {
private final String label;
public MyNodeData(final String label) {
this.label = label;
}
public String getLabel() {
return label;
}
@Override
public String toString() {
return "MyNodeData{" + "label='" + label + '\'' + '}';
}
}