1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.webkit;
import android.graphics.Bitmap;
import android.os.Message;
public class WebChromeClient {
/**
* Tell the host application the current progress of loading a page.
* @param view The WebView that initiated the callback.
* @param newProgress Current page loading progress, represented by
* an integer between 0 and 100.
*/
public void onProgressChanged(WebView view, int newProgress) {}
/**
* Notify the host application of a change in the document title.
* @param view The WebView that initiated the callback.
* @param title A String containing the new title of the document.
*/
public void onReceivedTitle(WebView view, String title) {}
/**
* Notify the host application of a new favicon for the current page.
* @param view The WebView that initiated the callback.
* @param icon A Bitmap containing the favicon for the current page.
*/
public void onReceivedIcon(WebView view, Bitmap icon) {}
/**
* Request the host application to create a new Webview. The host
* application should handle placement of the new WebView in the view
* system. The default behavior returns null.
* @param view The WebView that initiated the callback.
* @param dialog True if the new window is meant to be a small dialog
* window.
* @param userGesture True if the request was initiated by a user gesture
* such as clicking a link.
* @param resultMsg The message to send when done creating a new WebView.
* Set the new WebView through resultMsg.obj which is
* WebView.WebViewTransport() and then call
* resultMsg.sendToTarget();
* @return Similar to javscript dialogs, this method should return true if
* the client is going to handle creating a new WebView. Note that
* the WebView will halt processing if this method returns true so
* make sure to call resultMsg.sendToTarget(). It is undefined
* behavior to call resultMsg.sendToTarget() after returning false
* from this method.
*/
public boolean onCreateWindow(WebView view, boolean dialog,
boolean userGesture, Message resultMsg) {
return false;
}
/**
* Request display and focus for this WebView. This may happen due to
* another WebView opening a link in this WebView and requesting that this
* WebView be displayed.
* @param view The WebView that needs to be focused.
*/
public void onRequestFocus(WebView view) {}
/**
* Notify the host application to close the given WebView and remove it
* from the view system if necessary. At this point, WebCore has stopped
* any loading in this window and has removed any cross-scripting ability
* in javascript.
* @param window The WebView that needs to be closed.
*/
public void onCloseWindow(WebView window) {}
/**
* Tell the client to display a javascript alert dialog. If the client
* returns true, WebView will assume that the client will handle the
* dialog. If the client returns false, it will continue execution.
* @param view The WebView that initiated the callback.
* @param url The url of the page requesting the dialog.
* @param message Message to be displayed in the window.
* @param result A JsResult to confirm that the user hit enter.
* @return boolean Whether the client will handle the alert dialog.
*/
public boolean onJsAlert(WebView view, String url, String message,
JsResult result) {
return false;
}
/**
* Tell the client to display a confirm dialog to the user. If the client
* returns true, WebView will assume that the client will handle the
* confirm dialog and call the appropriate JsResult method. If the
* client returns false, a default value of false will be returned to
* javascript. The default behavior is to return false.
* @param view The WebView that initiated the callback.
* @param url The url of the page requesting the dialog.
* @param message Message to be displayed in the window.
* @param result A JsResult used to send the user's response to
* javascript.
* @return boolean Whether the client will handle the confirm dialog.
*/
public boolean onJsConfirm(WebView view, String url, String message,
JsResult result) {
return false;
}
/**
* Tell the client to display a prompt dialog to the user. If the client
* returns true, WebView will assume that the client will handle the
* prompt dialog and call the appropriate JsPromptResult method. If the
* client returns false, a default value of false will be returned to to
* javascript. The default behavior is to return false.
* @param view The WebView that initiated the callback.
* @param url The url of the page requesting the dialog.
* @param message Message to be displayed in the window.
* @param defaultValue The default value displayed in the prompt dialog.
* @param result A JsPromptResult used to send the user's reponse to
* javascript.
* @return boolean Whether the client will handle the prompt dialog.
*/
public boolean onJsPrompt(WebView view, String url, String message,
String defaultValue, JsPromptResult result) {
return false;
}
/**
* Tell the client to display a dialog to confirm navigation away from the
* current page. This is the result of the onbeforeunload javascript event.
* If the client returns true, WebView will assume that the client will
* handle the confirm dialog and call the appropriate JsResult method. If
* the client returns false, a default value of true will be returned to
* javascript to accept navigation away from the current page. The default
* behavior is to return false. Setting the JsResult to true will navigate
* away from the current page, false will cancel the navigation.
* @param view The WebView that initiated the callback.
* @param url The url of the page requesting the dialog.
* @param message Message to be displayed in the window.
* @param result A JsResult used to send the user's response to
* javascript.
* @return boolean Whether the client will handle the confirm dialog.
*/
public boolean onJsBeforeUnload(WebView view, String url, String message,
JsResult result) {
return false;
}
/**
* Tell the client that a JavaScript execution timeout has occured. And the
* client may decide whether or not to interrupt the execution. If the
* client returns true, the JavaScript will be interrupted. If the client
* returns false, the execution will continue. Note that in the case of
* continuing execution, the timeout counter will be reset, and the callback
* will continue to occur if the script does not finish at the next check
* point.
* @return boolean Whether the JavaScript execution should be interrupted.
* @hide pending API Council approval
*/
public boolean onJsTimeout() {
return true;
}
}
|
