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.user.client.ui;
17:
18: import java.util.ArrayList;
19:
20: /**
21: * A helper class for implementers of the
22: * {@link com.google.gwt.user.client.ui.SourcesTabEvents} interface. This
23: * subclass of {@link ArrayList} assumes that all objects added to it will be of
24: * type {@link com.google.gwt.user.client.ui.TabListener}.
25: */
26: public class TabListenerCollection extends ArrayList<TabListener> {
27:
28: /**
29: * Fires a beforeTabSelected event to all listeners.
30: *
31: * @param sender the widget sending the event
32: * @param tabIndex the index of the tab being selected
33: */
34: public boolean fireBeforeTabSelected(SourcesTabEvents sender,
35: int tabIndex) {
36: for (TabListener listener : this ) {
37: if (!listener.onBeforeTabSelected(sender, tabIndex)) {
38: return false;
39: }
40: }
41: return true;
42: }
43:
44: /**
45: * Fires a tabSelected event to all listeners.
46: *
47: * @param sender the widget sending the event
48: * @param tabIndex the index of the tab being selected
49: */
50: public void fireTabSelected(SourcesTabEvents sender, int tabIndex) {
51: for (TabListener listener : this) {
52: listener.onTabSelected(sender, tabIndex);
53: }
54: }
55: }
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