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authorArtur Signell <artur@vaadin.com>2012-08-30 17:24:36 +0300
committerArtur Signell <artur@vaadin.com>2012-08-30 17:24:36 +0300
commit7b25b3886ea95bc6495506fbe9472e45fcbde684 (patch)
tree0b93cb65dab437feb46720659a63b8f1ef48f7f4 /uitest/src/com/vaadin/tests/TreeFilesystem.java
parent8941056349e302e687e40e94c13709e75f256d73 (diff)
downloadvaadin-framework-7b25b3886ea95bc6495506fbe9472e45fcbde684.tar.gz
vaadin-framework-7b25b3886ea95bc6495506fbe9472e45fcbde684.zip
Renamed tests -> uitest and tests/testbench -> uitest/src (#9299)
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diff --git a/uitest/src/com/vaadin/tests/TreeFilesystem.java b/uitest/src/com/vaadin/tests/TreeFilesystem.java
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+/*
+ * Copyright 2011 Vaadin Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.vaadin.tests;
+
+import java.io.File;
+
+import com.vaadin.data.Item;
+import com.vaadin.shared.ui.label.ContentMode;
+import com.vaadin.tests.util.SampleDirectory;
+import com.vaadin.ui.Label;
+import com.vaadin.ui.Panel;
+import com.vaadin.ui.UI.LegacyWindow;
+import com.vaadin.ui.Tree;
+import com.vaadin.ui.Tree.ExpandEvent;
+
+/**
+ * Browsable file explorer using Vaadin Tree component. Demonstrates: how to add
+ * items hierarchically into <code>com.vaadin.ui.Component.Tree</code>, how to
+ * receive ExpandEvent and implement
+ * <code>com.vaadin.ui.Tree.ExpandListener</code>.
+ *
+ * @since 4.0.0
+ *
+ */
+public class TreeFilesystem extends com.vaadin.Application.LegacyApplication
+ implements Tree.ExpandListener {
+
+ // Filesystem explorer panel and it's components
+ private final Panel explorerPanel = new Panel("Filesystem explorer");
+
+ private final Tree tree = new Tree();
+
+ @Override
+ public void init() {
+ final LegacyWindow main = new LegacyWindow("Tree filesystem demo");
+ setMainWindow(main);
+
+ // Main window contains heading and panel
+ main.addComponent(new Label("<h2>Tree demo</h2>", ContentMode.XHTML));
+
+ // configure file structure panel
+ main.addComponent(explorerPanel);
+ explorerPanel.addComponent(tree);
+ explorerPanel.setHeight("400px");
+
+ // "this" handles tree's expand event
+ tree.addListener(this);
+
+ // Get sample directory
+ final File sampleDir = SampleDirectory.getDirectory(this, main);
+ // populate tree's root node with example directory
+ if (sampleDir != null) {
+ populateNode(sampleDir.getAbsolutePath(), null);
+ }
+ }
+
+ /**
+ * Handle tree expand event, populate expanded node's childs with new files
+ * and directories.
+ */
+ @Override
+ public void nodeExpand(ExpandEvent event) {
+ final Item i = tree.getItem(event.getItemId());
+ if (!tree.hasChildren(i)) {
+ // populate tree's node which was expanded
+ populateNode(event.getItemId().toString(), event.getItemId());
+ }
+ }
+
+ /**
+ * Populates files to tree as items. In this example items are of String
+ * type that consist of file path. New items are added to tree and item's
+ * parent and children properties are updated.
+ *
+ * @param file
+ * path which contents are added to tree
+ * @param parent
+ * for added nodes, if null then new nodes are added to root node
+ */
+ private void populateNode(String file, Object parent) {
+ final File subdir = new File(file);
+ final File[] files = subdir.listFiles();
+ for (int x = 0; x < files.length; x++) {
+ try {
+ // add new item (String) to tree
+ final String path = files[x].getCanonicalPath().toString();
+ tree.addItem(path);
+ // set parent if this item has one
+ if (parent != null) {
+ tree.setParent(path, parent);
+ }
+ // check if item is a directory and read access exists
+ if (files[x].isDirectory() && files[x].canRead()) {
+ // yes, childrens therefore exists
+ tree.setChildrenAllowed(path, true);
+ } else {
+ // no, childrens therefore do not exists
+ tree.setChildrenAllowed(path, false);
+ }
+ } catch (final Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+ }
+
+}