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index.zulzul<zk>
<window apply="pkg$.TestComposer" width="600px">
<tree id="tree" width="100%" height="500px"/>
</window>
</zk>
TestComposer.javajavaimport org.zkoss.util.resource.Labels;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.Executions;
import org.zkoss.zk.ui.Sessions;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventQueues;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zul.*;
import java.util.ArrayList;
import java.util.List;
public class TestComposer extends SelectorComposer<Component>{
public static class MyData {
String name;
String iconUrl;
List<MyNode> children;
public MyData(String name, String iconUrl) {
this.name = name;
this.iconUrl = iconUrl;
this.children = new ArrayList<>();
}
public String getName() { return name; }
public String getIconUrl() { return iconUrl; }
public List<MyNode> getChildren() { return children; }
}
public class MyNode extends DefaultTreeNode<MyData> {
public MyNode(MyData data) {
super(data);
}
public MyNode(MyData data, ArrayList<TreeNode<MyData>> treeNodes) {
super(data, treeNodes);
}
}
public static class MyTreeModel extends DefaultTreeModel<MyNode> {
public MyTreeModel(TreeNode<MyNode> root) {
super(root);
}
@Override
public int[] getPath(TreeNode<MyNode> node) {
List<Integer> path = new ArrayList<>();
MyNode current = node.getData();
while (current.getParent() != null) {
MyNode parent = (MyNode) current.getParent();
int index = parent.getChildren().indexOf(current);
if (index < 0) break;
path.add(0, index);
current = parent;
}
return path.stream().mapToInt(i -> i).toArray();
}
}
@Wire
Tree tree;
@Override
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
// 建立資料模型
MyNode root = new MyNode(new MyData("root", null), new ArrayList<>());
for (int i = 1; i <= 100; i++) {
MyNode parent = new MyNode(new MyData("Node " + i, "https://png.pngtree.com/png-vector/20221222/ourmid/pngtree-super-cute-cartoon-vector-bear-png-image_6504049.png"), new ArrayList<>());
for (int j = 1; j <= 10; j++) {
MyNode child = new MyNode(new MyData("Child " + i + "-" + j, null));
parent.getChildren().add(child);
}
root.getChildren().add(parent);
}
DefaultTreeModel<MyData> model = new DefaultTreeModel<>(root);
tree.setItemRenderer(new TreeItemRender());
tree.setModel(model);
}
public static class TreeItemRender implements TreeitemRenderer<MyNode> {
@Override
public void render(Treeitem item, MyNode node, int index) throws Exception {
item.setOpen(false); // optional: collapsed by default
Treerow row = new Treerow();
row.setParent(item);
Treecell cell = new Treecell();
if (node.getData().getIconUrl() != null) {
Image img = new Image(node.getData().getIconUrl());
img.setWidth("16px");
img.setHeight("16px");
cell.appendChild(img);
}
cell.appendChild(new Label(node.getData().getName()));
row.appendChild(cell);
}
}
}