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16 package com.google.gwt.user.client.ui;
17
18 import com.google.gwt.user.client.DOM;
19 import com.google.gwt.user.client.Event;
20 import com.google.gwt.user.client.ui.impl.FocusImpl;
21
22
26 public class FocusPanel extends SimplePanel implements HasFocus,
27 SourcesClickEvents, SourcesMouseEvents, SourcesMouseWheelEvents {
28
29 static final FocusImpl impl = FocusImpl.getFocusImplForPanel();
30
31 private ClickListenerCollection clickListeners;
32 private FocusListenerCollection focusListeners;
33 private KeyboardListenerCollection keyboardListeners;
34 private MouseListenerCollection mouseListeners;
35 private MouseWheelListenerCollection mouseWheelListeners;
36
37 public FocusPanel() {
38 super(impl.createFocusable());
39 sinkEvents(Event.FOCUSEVENTS | Event.KEYEVENTS | Event.ONCLICK
40 | Event.MOUSEEVENTS | Event.ONMOUSEWHEEL);
41 }
42
43 public FocusPanel(Widget child) {
44 this();
45 setWidget(child);
46 }
47
48 public void addClickListener(ClickListener listener) {
49 if (clickListeners == null) {
50 clickListeners = new ClickListenerCollection();
51 }
52 clickListeners.add(listener);
53 }
54
55 public void addFocusListener(FocusListener listener) {
56 if (focusListeners == null) {
57 focusListeners = new FocusListenerCollection();
58 }
59 focusListeners.add(listener);
60 }
61
62 public void addKeyboardListener(KeyboardListener listener) {
63 if (keyboardListeners == null) {
64 keyboardListeners = new KeyboardListenerCollection();
65 }
66 keyboardListeners.add(listener);
67 }
68
69 public void addMouseListener(MouseListener listener) {
70 if (mouseListeners == null) {
71 mouseListeners = new MouseListenerCollection();
72 }
73 mouseListeners.add(listener);
74 }
75
76 public void addMouseWheelListener(MouseWheelListener listener) {
77 if (mouseWheelListeners == null) {
78 mouseWheelListeners = new MouseWheelListenerCollection();
79 }
80 mouseWheelListeners.add(listener);
81 }
82
83 public int getTabIndex() {
84 return impl.getTabIndex(getElement());
85 }
86
87 public void onBrowserEvent(Event event) {
88 switch (DOM.eventGetType(event)) {
89 case Event.ONCLICK:
90 if (clickListeners != null) {
91 clickListeners.fireClick(this);
92 }
93 break;
94
95 case Event.ONMOUSEDOWN:
96 case Event.ONMOUSEUP:
97 case Event.ONMOUSEMOVE:
98 case Event.ONMOUSEOVER:
99 case Event.ONMOUSEOUT:
100 if (mouseListeners != null) {
101 mouseListeners.fireMouseEvent(this, event);
102 }
103 break;
104
105 case Event.ONMOUSEWHEEL:
106 if (mouseWheelListeners != null) {
107 mouseWheelListeners.fireMouseWheelEvent(this, event);
108 }
109 break;
110
111 case Event.ONBLUR:
112 case Event.ONFOCUS:
113 if (focusListeners != null) {
114 focusListeners.fireFocusEvent(this, event);
115 }
116 break;
117
118 case Event.ONKEYDOWN:
119 case Event.ONKEYUP:
120 case Event.ONKEYPRESS:
121 if (keyboardListeners != null) {
122 keyboardListeners.fireKeyboardEvent(this, event);
123 }
124 break;
125 }
126 }
127
128 public void removeClickListener(ClickListener listener) {
129 if (clickListeners != null) {
130 clickListeners.remove(listener);
131 }
132 }
133
134 public void removeFocusListener(FocusListener listener) {
135 if (focusListeners != null) {
136 focusListeners.remove(listener);
137 }
138 }
139
140 public void removeKeyboardListener(KeyboardListener listener) {
141 if (keyboardListeners != null) {
142 keyboardListeners.remove(listener);
143 }
144 }
145
146 public void removeMouseListener(MouseListener listener) {
147 if (mouseListeners != null) {
148 mouseListeners.remove(listener);
149 }
150 }
151
152 public void removeMouseWheelListener(MouseWheelListener listener) {
153 if (mouseWheelListeners != null) {
154 mouseWheelListeners.remove(listener);
155 }
156 }
157
158 public void setAccessKey(char key) {
159 impl.setAccessKey(getElement(), key);
160 }
161
162 public void setFocus(boolean focused) {
163 if (focused) {
164 impl.focus(getElement());
165 } else {
166 impl.blur(getElement());
167 }
168 }
169
170 public void setTabIndex(int index) {
171 impl.setTabIndex(getElement(), index);
172 }
173 }
174 |
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