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// Copyright 2006 The Closure Library Authors. All Rights Reserved.
//
// 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.
/**
* @fileoverview Flash detection.
* @see ../demos/useragent.html
*/
goog.provide('goog.userAgent.flash');
goog.require('goog.string');
/**
* @define {boolean} Whether we know at compile-time that the browser doesn't
* have flash.
*/
goog.userAgent.flash.ASSUME_NO_FLASH = false;
/**
* Whether we can detect that the browser has flash
* @type {boolean}
* @private
*/
goog.userAgent.flash.detectedFlash_ = false;
/**
* Full version information of flash installed, in form 7.0.61
* @type {string}
* @private
*/
goog.userAgent.flash.detectedFlashVersion_ = '';
/**
* Initializer for goog.userAgent.flash
*
* This is a named function so that it can be stripped via the jscompiler if
* goog.userAgent.flash.ASSUME_NO_FLASH is true.
* @private
*/
goog.userAgent.flash.init_ = function() {
if (navigator.plugins && navigator.plugins.length) {
var plugin = navigator.plugins['Shockwave Flash'];
if (plugin) {
goog.userAgent.flash.detectedFlash_ = true;
if (plugin.description) {
goog.userAgent.flash.detectedFlashVersion_ =
goog.userAgent.flash.getVersion_(plugin.description);
}
}
if (navigator.plugins['Shockwave Flash 2.0']) {
goog.userAgent.flash.detectedFlash_ = true;
goog.userAgent.flash.detectedFlashVersion_ = '2.0.0.11';
}
} else if (navigator.mimeTypes && navigator.mimeTypes.length) {
var mimeType = navigator.mimeTypes['application/x-shockwave-flash'];
goog.userAgent.flash.detectedFlash_ = mimeType && mimeType.enabledPlugin;
if (goog.userAgent.flash.detectedFlash_) {
goog.userAgent.flash.detectedFlashVersion_ =
goog.userAgent.flash.getVersion_(mimeType.enabledPlugin.description);
}
} else {
/** @preserveTry */
try {
// Try 7 first, since we know we can use GetVariable with it
var ax = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.7');
goog.userAgent.flash.detectedFlash_ = true;
goog.userAgent.flash.detectedFlashVersion_ =
goog.userAgent.flash.getVersion_(ax.GetVariable('$version'));
} catch (e) {
// Try 6 next, some versions are known to crash with GetVariable calls
/** @preserveTry */
try {
var ax = new ActiveXObject('ShockwaveFlash.ShockwaveFlash.6');
goog.userAgent.flash.detectedFlash_ = true;
// First public version of Flash 6
goog.userAgent.flash.detectedFlashVersion_ = '6.0.21';
} catch (e2) {
/** @preserveTry */
try {
// Try the default activeX
var ax = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
goog.userAgent.flash.detectedFlash_ = true;
goog.userAgent.flash.detectedFlashVersion_ =
goog.userAgent.flash.getVersion_(ax.GetVariable('$version'));
} catch (e3) {
// No flash
}
}
}
}
};
/**
* Derived from Apple's suggested sniffer.
* @param {string} desc e.g. Shockwave Flash 7.0 r61.
* @return {string} 7.0.61.
* @private
*/
goog.userAgent.flash.getVersion_ = function(desc) {
var matches = desc.match(/[\d]+/g);
matches.length = 3; // To standardize IE vs FF
return matches.join('.');
};
if (!goog.userAgent.flash.ASSUME_NO_FLASH) {
goog.userAgent.flash.init_();
}
/**
* Whether we can detect that the browser has flash
* @type {boolean}
*/
goog.userAgent.flash.HAS_FLASH = goog.userAgent.flash.detectedFlash_;
/**
* Full version information of flash installed, in form 7.0.61
* @type {string}
*/
goog.userAgent.flash.VERSION = goog.userAgent.flash.detectedFlashVersion_;
/**
* Whether the installed flash version is as new or newer than a given version.
* @param {string} version The version to check.
* @return {boolean} Whether the installed flash version is as new or newer
* than a given version.
*/
goog.userAgent.flash.isVersion = function(version) {
return goog.string.compareVersions(goog.userAgent.flash.VERSION,
version) >= 0;
};
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