jquery.fullscreen.js
6.07 KB
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
176
177
178
179
180
181
182
/**
* 基于jQuery FullScreen修改
* 新增支持IE全屏显示
* Copyright (c) 2019 ruoyi
*/
(function(jQuery) {
/**
* Sets or gets the fullscreen state.
*
* @param {boolean=} state
* True to enable fullscreen mode, false to disable it. If not
* specified then the current fullscreen state is returned.
* @return {boolean|Element|jQuery|null}
* When querying the fullscreen state then the current fullscreen
* element (or true if browser doesn't support it) is returned
* when browser is currently in full screen mode. False is returned
* if browser is not in full screen mode. Null is returned if
* browser doesn't support fullscreen mode at all. When setting
* the fullscreen state then the current jQuery selection is
* returned for chaining.
* @this {jQuery}
*/
function fullScreen(state)
{
var e, func, doc;
// Do nothing when nothing was selected
if (!this.length) return this;
// We only use the first selected element because it doesn't make sense
// to fullscreen multiple elements.
e = (/** @type {Element} */ this[0]);
// Find the real element and the document (Depends on whether the
// document itself or a HTML element was selected)
if (e.ownerDocument)
{
doc = e.ownerDocument;
}
else
{
doc = e;
e = doc.documentElement;
}
// When no state was specified then return the current state.
if (state == null)
{
// When fullscreen mode is not supported then return null
if (!((/** @type {?Function} */ doc["exitFullscreen"])
|| (/** @type {?Function} */ doc["webkitExitFullscreen"])
|| (/** @type {?Function} */ doc["webkitCancelFullScreen"])
|| (/** @type {?Function} */ doc["msExitFullscreen"])
|| (/** @type {?Function} */ doc["mozCancelFullScreen"])))
{
return null;
}
// Check fullscreen state
state = !!doc["fullscreenElement"]
|| !!doc["msFullscreenElement"]
|| !!doc["webkitIsFullScreen"]
|| !!doc["mozFullScreen"];
if (!state) return state;
// Return current fullscreen element or "true" if browser doesn't
// support this
return (/** @type {?Element} */ doc["fullscreenElement"])
|| (/** @type {?Element} */ doc["webkitFullscreenElement"])
|| (/** @type {?Element} */ doc["webkitCurrentFullScreenElement"])
|| (/** @type {?Element} */ doc["msFullscreenElement"])
|| (/** @type {?Element} */ doc["mozFullScreenElement"])
|| state;
}
// When state was specified then enter or exit fullscreen mode.
if (state)
{
// Enter fullscreen
func = (/** @type {?Function} */ e["requestFullscreen"])
|| (/** @type {?Function} */ e["webkitRequestFullscreen"])
|| (/** @type {?Function} */ e["webkitRequestFullScreen"])
|| (/** @type {?Function} */ e["msRequestFullscreen"])
|| (/** @type {?Function} */ e["mozRequestFullScreen"]);
if (func)
{
func.call(e);
}
return this;
}
else
{
// Exit fullscreen
func = (/** @type {?Function} */ doc["exitFullscreen"])
|| (/** @type {?Function} */ doc["webkitExitFullscreen"])
|| (/** @type {?Function} */ doc["webkitCancelFullScreen"])
|| (/** @type {?Function} */ doc["msExitFullscreen"])
|| (/** @type {?Function} */ doc["mozCancelFullScreen"]);
if (func) func.call(doc);
return this;
}
}
/**
* Toggles the fullscreen mode.
*
* @return {!jQuery}
* The jQuery selection for chaining.
* @this {jQuery}
*/
function toggleFullScreen()
{
return (/** @type {!jQuery} */ fullScreen.call(this,
!fullScreen.call(this)));
}
/**
* Handles the browser-specific fullscreenchange event and triggers
* a jquery event for it.
*
* @param {?Event} event
* The fullscreenchange event.
*/
function fullScreenChangeHandler(event)
{
jQuery(document).trigger(new jQuery.Event("fullscreenchange"));
}
/**
* Handles the browser-specific fullscreenerror event and triggers
* a jquery event for it.
*
* @param {?Event} event
* The fullscreenerror event.
*/
function fullScreenErrorHandler(event)
{
jQuery(document).trigger(new jQuery.Event("fullscreenerror"));
}
/**
* Installs the fullscreenchange event handler.
*/
function installFullScreenHandlers()
{
var e, change, error;
// Determine event name
e = document;
if (e["webkitCancelFullScreen"])
{
change = "webkitfullscreenchange";
error = "webkitfullscreenerror";
}
else if (e["msExitFullscreen"])
{
change = "MSFullscreenChange";
error = "MSFullscreenError";
}
else if (e["mozCancelFullScreen"])
{
change = "mozfullscreenchange";
error = "mozfullscreenerror";
}
else
{
change = "fullscreenchange";
error = "fullscreenerror";
}
// Install the event handlers
jQuery(document).bind(change, fullScreenChangeHandler);
jQuery(document).bind(error, fullScreenErrorHandler);
}
jQuery.fn["fullScreen"] = fullScreen;
jQuery.fn["toggleFullScreen"] = toggleFullScreen;
installFullScreenHandlers();
})(jQuery);