01: /*
02: * Copyright 2006 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 com.google.gwt.user.client.DOM;
19: import com.google.gwt.user.client.Element;
20:
21: /**
22: * A standard push-button widget.
23: *
24: * <p>
25: * <img class='gallery' src='Button.png'/>
26: * </p>
27: *
28: * <h3>CSS Style Rules</h3>
29: * <ul class="css">
30: * <li>.gwt-Button { }</li>
31: * </ul>
32: *
33: * <p>
34: * <h3>Example</h3> {@example com.google.gwt.examples.ButtonExample}
35: * </p>
36: */
37: public class Button extends ButtonBase {
38:
39: static native void click(Element button) /*-{
40: button.click();
41: }-*/;
42:
43: static native void adjustType(Element button) /*-{
44: // Check before setting this attribute, as not all browsers define it.
45: if (button.type == 'submit') {
46: try {
47: button.setAttribute("type", "button");
48: } catch (e) {
49: }
50: }
51: }-*/;
52:
53: /**
54: * Creates a button with no caption.
55: */
56: public Button() {
57: super (DOM.createButton());
58: adjustType(getElement());
59: setStyleName("gwt-Button");
60: }
61:
62: /**
63: * Creates a button with the given HTML caption.
64: *
65: * @param html the HTML caption
66: */
67: public Button(String html) {
68: this ();
69: setHTML(html);
70: }
71:
72: /**
73: * Creates a button with the given HTML caption and click listener.
74: *
75: * @param html the HTML caption
76: * @param listener the click listener
77: */
78: public Button(String html, ClickListener listener) {
79: this (html);
80: addClickListener(listener);
81: }
82:
83: /**
84: * Programmatic equivalent of the user clicking the button.
85: */
86: public void click() {
87: click(getElement());
88: }
89: }
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