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Java/GWT/Tree - История изменений
2026-04-07T02:37:46Z
История изменений этой страницы в вики
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http://jexp.ru/index.php?title=Java/GWT/Tree&diff=7063&oldid=prev
Admin: 1 версия
2010-06-01T06:35:38Z
<p>1 версия</p>
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<td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td>
<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 06:35, 1 июня 2010</td>
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Admin
http://jexp.ru/index.php?title=Java/GWT/Tree&diff=7062&oldid=prev
в 18:01, 31 мая 2010
2010-05-31T18:01:44Z
<p></p>
<p><b>Новая страница</b></p><div>== Create Tree With Pending Item ==<br />
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<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<br />
package com.jexp.gwt.client;<br />
import com.google.gwt.core.client.EntryPoint;<br />
import com.google.gwt.user.client.Window;<br />
import com.google.gwt.user.client.ui.Button;<br />
import com.google.gwt.user.client.ui.ClickListener;<br />
import com.google.gwt.user.client.ui.RootPanel;<br />
import com.google.gwt.user.client.ui.Widget;<br />
import com.google.gwt.user.client.ui.Tree;<br />
import com.google.gwt.user.client.ui.TreeItem;<br />
import com.google.gwt.user.client.ui.TreeListener;<br />
public class GWTClient implements EntryPoint,TreeListener {<br />
class PendingItem extends TreeItem {<br />
public PendingItem() {<br />
super("Please wait...");<br />
}<br />
}<br />
class TreeNode {<br />
public TreeNode[] children;<br />
public TreeItem item;<br />
public String text;<br />
public TreeNode(String text) {<br />
this.text = text;<br />
}<br />
public TreeNode(String text, TreeNode[] children) {<br />
this(text);<br />
this.children = children;<br />
}<br />
}<br />
TreeNode[] fTreeNode = new TreeNode[]{<br />
new TreeNode("A", new TreeNode[]{<br />
new TreeNode("B", new TreeNode[]{<br />
new TreeNode("1"), <br />
new TreeNode("2"),<br />
new TreeNode("3"), <br />
new TreeNode("4"),<br />
new TreeNode("5"),}),<br />
new TreeNode("B", new TreeNode[]{<br />
new TreeNode("B1"), <br />
new TreeNode("B2"),<br />
new TreeNode("B3"),}),<br />
new TreeNode("C", new TreeNode[]{<br />
new TreeNode("C1"), <br />
new TreeNode("C2"),}),<br />
new TreeNode("D", new TreeNode[]{<br />
new TreeNode("1"), <br />
new TreeNode("2"),<br />
new TreeNode("3"),}),}),<br />
new TreeNode("AA", new TreeNode[]{<br />
new TreeNode("A", new TreeNode[]{<br />
new TreeNode("A1"), <br />
new TreeNode("A2"),<br />
new TreeNode("A3"),<br />
new TreeNode("A4"),}),<br />
new TreeNode("B", new TreeNode[]{<br />
new TreeNode("1"),<br />
new TreeNode("2"),<br />
new TreeNode("3"),<br />
new TreeNode("4"),}),<br />
new TreeNode("C", new TreeNode[]{<br />
new TreeNode("F"),<br />
new TreeNode("E"),}),<br />
new TreeNode("G", new TreeNode[]{<br />
new TreeNode("C"), <br />
new TreeNode("2"),<br />
new TreeNode("F"), <br />
new TreeNode("E"),}),}),<br />
new TreeNode("M", new TreeNode[]{<br />
new TreeNode("C", new TreeNode[]{<br />
new TreeNode("P"), <br />
new TreeNode("V"),}),}),};<br />
public void onModuleLoad() {<br />
Tree tree = new Tree();<br />
for (int i = 0; i < fTreeNode.length; ++i) {<br />
createItem(fTreeNode[i]);<br />
tree.addItem(fTreeNode[i].item);<br />
}<br />
tree.addTreeListener(this);<br />
tree.setWidth("20em");<br />
RootPanel.get().add(tree);<br />
}<br />
private void createItem(TreeNode TreeNode) {<br />
TreeNode.item = new TreeItem(TreeNode.text);<br />
TreeNode.item.setUserObject(TreeNode);<br />
if (TreeNode.children != null) {<br />
TreeNode.item.addItem(new PendingItem());<br />
}<br />
}<br />
public void onTreeItemSelected(TreeItem item) {<br />
Window.alert(((TreeNode) item.getUserObject()).text);<br />
}<br />
public void onTreeItemStateChanged(TreeItem item) {<br />
TreeItem child = item.getChild(0);<br />
if (child instanceof PendingItem) {<br />
item.removeItem(child);<br />
TreeNode tn = (TreeNode) item.getUserObject();<br />
for (int i = 0; i < tn.children.length; ++i) {<br />
createItem(tn.children[i]);<br />
item.addItem(tn.children[i].item);<br />
}<br />
}<br />
}<br />
<br />
}<br />
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</source><br />
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<br />
<!-- end source code --><br />
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<br />
== Use TreeListener ==<br />
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<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="java"><br />
<br />
package com.jexp.gwt.client;<br />
import com.google.gwt.core.client.EntryPoint;<br />
import com.google.gwt.user.client.Window;<br />
import com.google.gwt.user.client.ui.Button;<br />
import com.google.gwt.user.client.ui.ClickListener;<br />
import com.google.gwt.user.client.ui.RootPanel;<br />
import com.google.gwt.user.client.ui.Widget;<br />
import com.google.gwt.user.client.ui.Tree;<br />
import com.google.gwt.user.client.ui.TreeItem;<br />
import com.google.gwt.user.client.ui.TreeListener;<br />
public class GWTClient implements EntryPoint,TreeListener {<br />
class PendingItem extends TreeItem {<br />
public PendingItem() {<br />
super("Please wait...");<br />
}<br />
}<br />
class TreeNode {<br />
public TreeNode[] children;<br />
public TreeItem item;<br />
public String text;<br />
public TreeNode(String text) {<br />
this.text = text;<br />
}<br />
public TreeNode(String text, TreeNode[] children) {<br />
this(text);<br />
this.children = children;<br />
}<br />
}<br />
TreeNode[] fTreeNode = new TreeNode[]{<br />
new TreeNode("A", new TreeNode[]{<br />
new TreeNode("B", new TreeNode[]{<br />
new TreeNode("1"), <br />
new TreeNode("2"),<br />
new TreeNode("3"), <br />
new TreeNode("4"),<br />
new TreeNode("5"),}),<br />
new TreeNode("B", new TreeNode[]{<br />
new TreeNode("B1"), <br />
new TreeNode("B2"),<br />
new TreeNode("B3"),}),<br />
new TreeNode("C", new TreeNode[]{<br />
new TreeNode("C1"), <br />
new TreeNode("C2"),}),<br />
new TreeNode("D", new TreeNode[]{<br />
new TreeNode("1"), <br />
new TreeNode("2"),<br />
new TreeNode("3"),}),}),<br />
new TreeNode("AA", new TreeNode[]{<br />
new TreeNode("A", new TreeNode[]{<br />
new TreeNode("A1"), <br />
new TreeNode("A2"),<br />
new TreeNode("A3"),<br />
new TreeNode("A4"),}),<br />
new TreeNode("B", new TreeNode[]{<br />
new TreeNode("1"),<br />
new TreeNode("2"),<br />
new TreeNode("3"),<br />
new TreeNode("4"),}),<br />
new TreeNode("C", new TreeNode[]{<br />
new TreeNode("F"),<br />
new TreeNode("E"),}),<br />
new TreeNode("G", new TreeNode[]{<br />
new TreeNode("C"), <br />
new TreeNode("2"),<br />
new TreeNode("F"), <br />
new TreeNode("E"),}),}),<br />
new TreeNode("M", new TreeNode[]{<br />
new TreeNode("C", new TreeNode[]{<br />
new TreeNode("P"), <br />
new TreeNode("V"),}),}),};<br />
public void onModuleLoad() {<br />
Tree tree = new Tree();<br />
for (int i = 0; i < fTreeNode.length; ++i) {<br />
createItem(fTreeNode[i]);<br />
tree.addItem(fTreeNode[i].item);<br />
}<br />
tree.addTreeListener(this);<br />
tree.setWidth("20em");<br />
RootPanel.get().add(tree);<br />
}<br />
private void createItem(TreeNode TreeNode) {<br />
TreeNode.item = new TreeItem(TreeNode.text);<br />
TreeNode.item.setUserObject(TreeNode);<br />
if (TreeNode.children != null) {<br />
TreeNode.item.addItem(new PendingItem());<br />
}<br />
}<br />
public void onTreeItemSelected(TreeItem item) {<br />
Window.alert(((TreeNode) item.getUserObject()).text);<br />
}<br />
public void onTreeItemStateChanged(TreeItem item) {<br />
TreeItem child = item.getChild(0);<br />
if (child instanceof PendingItem) {<br />
item.removeItem(child);<br />
TreeNode tn = (TreeNode) item.getUserObject();<br />
for (int i = 0; i < tn.children.length; ++i) {<br />
createItem(tn.children[i]);<br />
item.addItem(tn.children[i].item);<br />
}<br />
}<br />
}<br />
<br />
}<br />
<br />
<br />
</source><br />
<br />
<br />
<!-- end source code --></div>