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// Copyright 2008 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 Detects the Adobe Reader PDF browser plugin.
*
* @author chrisn@google.com (Chris Nokleberg)
* @see ../demos/useragent.html
*/
goog.provide('goog.userAgent.adobeReader');
goog.require('goog.string');
goog.require('goog.userAgent');
(function() {
var version = '';
if (goog.userAgent.IE) {
function detectOnIe(classId) {
/** @preserveTry */
try {
new ActiveXObject(classId);
return true;
} catch (ex) {
return false;
}
}
if (detectOnIe('AcroPDF.PDF.1')) {
version = '7';
} else if (detectOnIe('PDF.PdfCtrl.6')) {
version = '6';
}
// TODO(chrisn): Add detection for previous versions if anyone needs them.
} else {
if (navigator.mimeTypes && navigator.mimeTypes.length > 0) {
var mimeType = navigator.mimeTypes['application/pdf'];
if (mimeType && mimeType.enabledPlugin) {
var description = mimeType.enabledPlugin.description;
if (description && description.indexOf('Adobe') != -1) {
// Newer plugins do not include the version in the description, so we
// default to 7.
version = description.indexOf('Version') != -1 ?
description.split('Version')[1] : '7';
}
}
}
}
/**
* Whether we detect the user has the Adobe Reader browser plugin installed.
* @type {boolean}
*/
goog.userAgent.adobeReader.HAS_READER = !!version;
/**
* The version of the installed Adobe Reader plugin. Versions after 7
* will all be reported as '7'.
* @type {string}
*/
goog.userAgent.adobeReader.VERSION = version;
/**
* On certain combinations of platform/browser/plugin, a print dialog
* can be shown for PDF files without a download dialog or making the
* PDF visible to the user, by loading the PDF into a hidden iframe.
*
* Currently this variable is true if Adobe Reader version 6 or later
* is detected on Windows.
*
* @type {boolean}
*/
goog.userAgent.adobeReader.SILENT_PRINT = goog.userAgent.WINDOWS &&
goog.string.compareVersions(version, '6') >= 0;
})();
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