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index.zulzul<?page title="Some Demo Tree" contentType="text/html;charset=UTF-8"?>
<zk>
<window title="Some Demo Tree" border="normal" apply="pkg$.MultiSelectTreeComposer_109238">
<tree model="${$composer.treeModel}" checkmark="true" width="700px" height="400px"/>
<button id="selectAll" label="select all"/>
</window>
</zk>MultiSelectTreeComposer_109238.javajavaimport java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.SelectEvent;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Listen;
import org.zkoss.zk.ui.util.Clients;
import org.zkoss.zul.DefaultTreeModel;
import org.zkoss.zul.DefaultTreeNode;
import org.zkoss.zul.Tree;
import org.zkoss.zul.TreeModel;
import org.zkoss.zul.TreeNode;
public class MultiSelectTreeComposer_109238 extends SelectorComposer<Component> {
private final List<TreeNode<String>> allTreeNodes = new ArrayList<TreeNode<String>>();
private final DefaultTreeModel<String> treeModel;
public MultiSelectTreeComposer_109238() {
TreeNode<String> root = treeNode("root",
treeNode("1",
treeNode("1.1"),
treeNode("1.2")),
treeNode("2",
treeNode("2.1",
treeNode("2.1.1",
treeNode("2.1.1.1"),
treeNode("2.1.1.2"),
treeNode("2.1.1.3"),
treeNode("2,1.1.4")),
treeNode("2.1.2")),
treeNode("2.2"),
treeNode("2.3")),
treeNode("3",
treeNode("3.1")));
treeModel = new DefaultTreeModel<String>(root);
treeModel.setMultiple(true);
}
public TreeModel<TreeNode<String>> getTreeModel() {
return treeModel;
}
@Listen("onSelect=tree")
public void onSelect(SelectEvent<Tree, TreeNode<String>> ev) {
Set<TreeNode<String>> previous = ev.getPreviousSelectedObjects();
Set<TreeNode<String>> current = treeModel.getSelection(); //model is already synchronized
Clients.log("previous: " + previous);
Clients.log("current: " + current);
Set<TreeNode<String>> newlySelected = new HashSet(current);
newlySelected.removeAll(previous);
Clients.log("newlySelected: " + newlySelected);
Set<TreeNode<String>> unselected = new HashSet(previous);
unselected.removeAll(current);
Clients.log("unselected: " + unselected);
//treeModel.setSelection(current); //not necessary -> happens automatically
}
@Listen("onClick=button#selectAll")
public void onSelectAll(Event ev) {
treeModel.setSelection(allTreeNodes);
}
private final TreeNode<String> treeNode(String data) {
DefaultTreeNode<String> treeLeaf = new DefaultTreeNode<String>(data);
allTreeNodes.add(treeLeaf);
return treeLeaf;
}
private final TreeNode<String> treeNode(String data, TreeNode<String>... children) {
DefaultTreeNode<String> treeNode = new DefaultTreeNode<String>(data, Arrays.asList(children));
allTreeNodes.add(treeNode);
return treeNode;
}
}