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Diffstat (limited to 'contexts/data/lib/closure-library/closure/goog/useragent/picasa.js')
-rw-r--r-- | contexts/data/lib/closure-library/closure/goog/useragent/picasa.js | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/contexts/data/lib/closure-library/closure/goog/useragent/picasa.js b/contexts/data/lib/closure-library/closure/goog/useragent/picasa.js deleted file mode 100644 index f4b00a2..0000000 --- a/contexts/data/lib/closure-library/closure/goog/useragent/picasa.js +++ /dev/null @@ -1,112 +0,0 @@ -// Copyright 2007 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 Detection for whether the user has Picasa installed. - * Only Picasa versions 2 and later can be detected, and only from Firefox or - * Internet Explorer. Picasa for Linux cannot be detected. - * - * In the future, Picasa may provide access to the installed version number, - * but until then we can only detect that Picasa 2 or later is present. - * - * To check for Picasa on Internet Explorer requires using document.write, so - * this file must be included at page rendering time and cannot be imported - * later as part of a dynamically loaded module. - * - * @author brenneman@google.com (Shawn Brenneman) - * @see ../demos/useragent.html - */ - - -goog.provide('goog.userAgent.picasa'); - -goog.require('goog.string'); -goog.require('goog.userAgent'); - - -/** - * Variable name used to temporarily save the Picasa state in the global object - * in Internet Explorer. - * @type {string} - * @private - */ -goog.userAgent.picasa.IE_HAS_PICASA_ = 'hasPicasa'; - - -(function() { - var hasPicasa = false; - - if (goog.userAgent.IE) { - // In Internet Explorer, Picasa 2 can be detected using conditional comments - // due to some nice registry magic. The precise version number is not - // available, only the major version. This may be updated for Picasa 3. This - // check must pollute the global namespace. - goog.global[goog.userAgent.picasa.IE_HAS_PICASA_] = hasPicasa; - - // NOTE(user): Some browsers do not like seeing - // slash-script anywhere in the text even if it's inside a string - // and escaped with a backslash, make a string in a way that - // avoids problems. - - document.write(goog.string.subs( - '<!--[if gte Picasa 2]>' + - '<%s>' + - 'this.%s=true;' + - '</%s>' + - '<![endif]-->', - 'script', goog.userAgent.picasa.IE_HAS_PICASA_, 'script')); - - hasPicasa = goog.global[goog.userAgent.picasa.IE_HAS_PICASA_]; - - // Unset the variable in a crude attempt to leave no trace. - goog.global[goog.userAgent.picasa.IE_HAS_PICASA_] = undefined; - - } else if (navigator.mimeTypes && - navigator.mimeTypes['application/x-picasa-detect']) { - // Picasa 2.x registers a file handler for the MIME-type - // 'application/x-picasa-detect' for detection in Firefox. Future versions - // may make precise version detection possible. - hasPicasa = true; - } - - /** - * Whether we detect the user has Picasa installed. - * @type {boolean} - */ - goog.userAgent.picasa.HAS_PICASA = hasPicasa; - - - /** - * The installed version of Picasa. If Picasa is detected, this means it is - * version 2 or later. The precise version number is not yet available to the - * browser, this is a placeholder for later versions of Picasa. - * @type {string} - */ - goog.userAgent.picasa.VERSION = hasPicasa ? '2' : ''; - -})(); - - -/** - * Whether the installed Picasa version is as new or newer than a given version. - * This is not yet relevant, we can't detect the true Picasa version number yet, - * but this may be possible in future Picasa releases. - * @param {string} version The version to check. - * @return {boolean} Whether the installed Picasa version is as new or newer - * than a given version. - */ -goog.userAgent.picasa.isVersion = function(version) { - return goog.string.compareVersions( - goog.userAgent.picasa.VERSION, version) >= 0; -}; |