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16 package com.google.gwt.sample.kitchensink.client;
17
18 import com.google.gwt.user.client.ui.ChangeListener;
19 import com.google.gwt.user.client.ui.HorizontalPanel;
20 import com.google.gwt.user.client.ui.Label;
21 import com.google.gwt.user.client.ui.ListBox;
22 import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
23 import com.google.gwt.user.client.ui.SuggestBox;
24 import com.google.gwt.user.client.ui.Tree;
25 import com.google.gwt.user.client.ui.TreeItem;
26 import com.google.gwt.user.client.ui.TreeListener;
27 import com.google.gwt.user.client.ui.VerticalPanel;
28 import com.google.gwt.user.client.ui.Widget;
29
30
33 public class Lists extends Sink implements ChangeListener, TreeListener {
34
35 private static class PendingItem extends TreeItem {
36 public PendingItem() {
37 super("Please wait...");
38 }
39 }
40
41 private static class Proto {
42 public Proto[] children;
43 public TreeItem item;
44 public String  text;
45
46 public Proto(String text) {
47 this.text = text;
48 }
49
50 public Proto(String text, Proto[] children) {
51 this(text);
52 this.children = children;
53 }
54 }
55
56 private static final String [][] stringLists = new String [][] {
57 new String [] {"foo0", "bar0", "baz0", "toto0", "tintin0"},
58 new String [] {"foo1", "bar1", "baz1", "toto1", "tintin1"},
59 new String [] {"foo2", "bar2", "baz2", "toto2", "tintin2"},
60 new String [] {"foo3", "bar3", "baz3", "toto3", "tintin3"},
61 new String [] {"foo4", "bar4", "baz4", "toto4", "tintin4"},};
62
63 private static final String [] words = new String [] {
64 "1337", "apple", "about", "ant", "bruce", "banana", "bobv", "canada",
65 "coconut", "compiler", "donut", "deferred binding", "dessert topping",
66 "eclair", "ecc", "frog attack", "floor wax", "fitz", "google", "gosh",
67 "gwt", "hollis", "haskell", "hammer", "in the flinks", "internets",
68 "ipso facto", "jat", "jgw", "java", "jens", "knorton", "kaitlyn",
69 "kangaroo", "la grange", "lars", "love", "morrildl", "max", "maddie",
70 "mloofle", "mmendez", "nail", "narnia", "null", "optimizations",
71 "obfuscation", "original", "ping pong", "polymorphic", "pleather",
72 "quotidian", "quality", "qu'est-ce que c'est", "ready state", "ruby",
73 "rdayal", "subversion", "superclass", "scottb", "tobyr", "the dans",
74 "~ tilde", "undefined", "unit tests", "under 100ms", "vtbl", "vidalia",
75 "vector graphics", "w3c", "web experience", "work around", "w00t!",
76 "xml", "xargs", "xeno", "yacc", "yank (the vi command)", "zealot", "zoe",
77 "zebra"};
78
79 private static Proto[] fProto = new Proto[]{
80 new Proto("Beethoven", new Proto[]{
81 new Proto("Concertos", new Proto[]{
82 new Proto("No. 1 - C"), new Proto("No. 2 - B-Flat Major"),
83 new Proto("No. 3 - C Minor"), new Proto("No. 4 - G Major"),
84 new Proto("No. 5 - E-Flat Major"),}),
85 new Proto("Quartets", new Proto[]{
86 new Proto("Six String Quartets"), new Proto("Three String Quartets"),
87 new Proto("Grosse Fugue for String Quartets"),}),
88 new Proto("Sonatas", new Proto[]{
89 new Proto("Sonata in A Minor"), new Proto("Sonata in F Major"),}),
90 new Proto("Symphonies", new Proto[]{
91 new Proto("No. 1 - C Major"), new Proto("No. 2 - D Major"),
92 new Proto("No. 3 - E-Flat Major"), new Proto("No. 4 - B-Flat Major"),
93 new Proto("No. 5 - C Minor"), new Proto("No. 6 - F Major"),
94 new Proto("No. 7 - A Major"), new Proto("No. 8 - F Major"),
95 new Proto("No. 9 - D Minor"),}),}),
96 new Proto("Brahms", new Proto[]{
97 new Proto("Concertos", new Proto[]{
98 new Proto("Violin Concerto"), new Proto("Double Concerto - A Minor"),
99 new Proto("Piano Concerto No. 1 - D Minor"),
100 new Proto("Piano Concerto No. 2 - B-Flat Major"),}),
101 new Proto("Quartets", new Proto[]{
102 new Proto("Piano Quartet No. 1 - G Minor"),
103 new Proto("Piano Quartet No. 2 - A Major"),
104 new Proto("Piano Quartet No. 3 - C Minor"),
105 new Proto("String Quartet No. 3 - B-Flat Minor"),}),
106 new Proto("Sonatas", new Proto[]{
107 new Proto("Two Sonatas for Clarinet - F Minor"),
108 new Proto("Two Sonatas for Clarinet - E-Flat Major"),}),
109 new Proto("Symphonies", new Proto[]{
110 new Proto("No. 1 - C Minor"), new Proto("No. 2 - D Minor"),
111 new Proto("No. 3 - F Major"), new Proto("No. 4 - E Minor"),}),}),
112 new Proto("Mozart", new Proto[]{new Proto("Concertos", new Proto[]{
113 new Proto("Piano Concerto No. 12"), new Proto("Piano Concerto No. 17"),
114 new Proto("Clarinet Concerto"), new Proto("Violin Concerto No. 5"),
115 new Proto("Violin Concerto No. 4"),}),}),};
116
117 public static SinkInfo init(final Sink.Images images) {
118 return new SinkInfo("Lists",
119 "<h2>Lists and Trees</h2>" +
120 "<p>GWT provides a number of ways to display lists and trees. This " +
121 "includes the browser's built-in list and drop-down boxes, as well as " +
122 "the more advanced suggestion combo-box and trees.</p><p>Try typing " +
123 "some text in the SuggestBox below to see what happens!</p>") {
124
125 public Sink createInstance() {
126 return new Lists(images);
127 }
128 };
129 }
130 private ListBox combo = new ListBox();
131 private ListBox list = new ListBox();
132
133 private MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();
134
135 private SuggestBox suggestBox = new SuggestBox(oracle);
136
137 private Tree tree;
138
139 public Lists(Sink.Images images) {
140 combo.setVisibleItemCount(1);
141 combo.addChangeListener(this);
142 list.setVisibleItemCount(10);
143 list.setMultipleSelect(true);
144
145 for (int i = 0; i < stringLists.length; ++i) {
146 combo.addItem("List " + i);
147 }
148 combo.setSelectedIndex(0);
149 fillList(0);
150
151 list.addChangeListener(this);
152
153 for (int i = 0; i < words.length; ++i) {
154 oracle.add(words[i]);
155 }
156
157 VerticalPanel suggestPanel = new VerticalPanel();
158 suggestPanel.add(new Label("Suggest box:"));
159 suggestPanel.add(suggestBox);
160
161 HorizontalPanel horz = new HorizontalPanel();
162 horz.setVerticalAlignment(HorizontalPanel.ALIGN_TOP);
163 horz.setSpacing(8);
164 horz.add(combo);
165 horz.add(list);
166 horz.add(suggestPanel);
167
168 VerticalPanel panel = new VerticalPanel();
169 panel.setHorizontalAlignment(VerticalPanel.ALIGN_LEFT);
170 panel.add(horz);
171 initWidget(panel);
172
173 tree = new Tree(images);
174 for (int i = 0; i < fProto.length; ++i) {
175 createItem(fProto[i]);
176 tree.addItem(fProto[i].item);
177 }
178
179 tree.addTreeListener(this);
180 tree.setWidth("20em");
181 horz.add(tree);
182 }
183
184 public void onChange(Widget sender) {
185 if (sender == combo) {
186 fillList(combo.getSelectedIndex());
187 } else if (sender == list) {
188 }
189 }
190
191 public void onShow() {
192 }
193
194 public void onTreeItemSelected(TreeItem item) {
195 }
196
197 public void onTreeItemStateChanged(TreeItem item) {
198 TreeItem child = item.getChild(0);
199 if (child instanceof PendingItem) {
200 item.removeItem(child);
201
202 Proto proto = (Proto) item.getUserObject();
203 for (int i = 0; i < proto.children.length; ++i) {
204 createItem(proto.children[i]);
205 item.addItem(proto.children[i].item);
206 }
207 }
208 }
209
210 private void createItem(Proto proto) {
211 proto.item = new TreeItem(proto.text);
212 proto.item.setUserObject(proto);
213 if (proto.children != null) {
214 proto.item.addItem(new PendingItem());
215 }
216 }
217
218 private void fillList(int idx) {
219 list.clear();
221 String [] strings = stringLists[idx];
222 for (int i = 0; i < strings.length; ++i) {
223 list.addItem(strings[i]);
224 }
225 }
226 }
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