01: /*
02: * Copyright 2007 Google Inc.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License"); you may not
05: * use this file except in compliance with the License. You may obtain a copy of
06: * the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12: * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13: * License for the specific language governing permissions and limitations under
14: * the License.
15: */
16: package com.google.gwt.sample.mail.client;
17:
18: import com.google.gwt.user.client.ui.AbstractImagePrototype;
19: import com.google.gwt.user.client.ui.Composite;
20: import com.google.gwt.user.client.ui.ImageBundle;
21: import com.google.gwt.user.client.ui.Tree;
22: import com.google.gwt.user.client.ui.TreeImages;
23: import com.google.gwt.user.client.ui.TreeItem;
24:
25: /**
26: * A tree displaying a set of email folders.
27: */
28: public class Mailboxes extends Composite {
29:
30: /**
31: * Specifies the images that will be bundled for this Composite and specify
32: * that tree's images should also be included in the same bundle.
33: */
34: public interface Images extends ImageBundle, TreeImages {
35: AbstractImagePrototype drafts();
36:
37: AbstractImagePrototype home();
38:
39: AbstractImagePrototype inbox();
40:
41: AbstractImagePrototype sent();
42:
43: AbstractImagePrototype templates();
44:
45: AbstractImagePrototype trash();
46: }
47:
48: private Tree tree;
49:
50: /**
51: * Constructs a new mailboxes widget with a bundle of images.
52: *
53: * @param images a bundle that provides the images for this widget
54: */
55: public Mailboxes(Images images) {
56: tree = new Tree(images);
57: TreeItem root = new TreeItem(imageItemHTML(images.home(),
58: "foo@example.com"));
59: tree.addItem(root);
60:
61: addImageItem(root, "Inbox", images.inbox());
62: addImageItem(root, "Drafts", images.drafts());
63: addImageItem(root, "Templates", images.templates());
64: addImageItem(root, "Sent", images.sent());
65: addImageItem(root, "Trash", images.trash());
66:
67: root.setState(true);
68: initWidget(tree);
69: }
70:
71: /**
72: * A helper method to simplify adding tree items that have attached images.
73: * {@link #addImageItem(TreeItem, String, AbstractImagePrototype) code}
74: *
75: * @param root the tree item to which the new item will be added.
76: * @param title the text associated with this item.
77: */
78: private TreeItem addImageItem(TreeItem root, String title,
79: AbstractImagePrototype imageProto) {
80: TreeItem item = new TreeItem(imageItemHTML(imageProto, title));
81: root.addItem(item);
82: return item;
83: }
84:
85: /**
86: * Generates HTML for a tree item with an attached icon.
87: *
88: * @param imageProto the image prototype to use
89: * @param title the title of the item
90: * @return the resultant HTML
91: */
92: private String imageItemHTML(AbstractImagePrototype imageProto,
93: String title) {
94: return "<span>" + imageProto.getHTML() + title + "</span>";
95: }
96: }
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