51 lines
1.8 KiB
JavaScript
51 lines
1.8 KiB
JavaScript
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/* Copyright 2018 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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let compatibilityParams = Object.create(null);
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if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
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const userAgent =
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(typeof navigator !== 'undefined' && navigator.userAgent) || '';
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const isIE = /Trident/.test(userAgent);
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const isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
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const isIOSChrome = /CriOS/.test(userAgent);
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const isSafari = /Safari\//.test(userAgent) &&
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!/(Chrome\/|Android\s)/.test(userAgent);
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// Checks if possible to use URL.createObjectURL()
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// Support: IE, Chrome on iOS
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(function checkOnBlobSupport() {
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// Sometimes IE and Chrome on iOS losing the data created with
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// createObjectURL(), see issues #3977 and #8081.
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if (isIE || isIOSChrome) {
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compatibilityParams.disableCreateObjectURL = true;
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}
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})();
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// Support: Safari 6.0+, iOS
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(function checkRangeRequests() {
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// Safari has issues with cached range requests, see issue #3260.
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// Last tested with version 6.0.4.
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if (isSafari || isIOS) {
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compatibilityParams.disableRange = true;
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compatibilityParams.disableStream = true;
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}
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})();
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}
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const apiCompatibilityParams = Object.freeze(compatibilityParams);
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export {
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apiCompatibilityParams,
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};
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