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jquery-fullscreen.js

Uploaded on Feb 26 2022 17:28 by misharnet

/**
* @preserve jquery.fullscreen 1.1.5
* https://github.com/code-lts/jquery-fullscreen-plugin
* Copyright (C) 2012-2013 Klaus Reimer <k@ailis.de>
* Licensed under the MIT license
* (See http://www.opensource.org/licenses/mit-license)
*/

(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 = fullScreenState(doc);
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 && fullScreenState(doc)) func.call(doc);
return this;
}
}

/**
* Check fullscreen state
*
* @param {Document} doc The content document
* @return {Boolean}
*/
function fullScreenState(doc) {
return !!(doc["fullscreenElement"] || doc["msFullscreenElement"] || doc["webkitIsFullScreen"] || doc["mozFullScreen"]);
}

/**
* 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).on(change, fullScreenChangeHandler);
jQuery(document).on(error, fullScreenErrorHandler);
}

jQuery.fn["fullScreen"] = fullScreen;
jQuery.fn["toggleFullScreen"] = toggleFullScreen;
installFullScreenHandlers();

})(jQuery);

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