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Move API specific compatibility options from src/shared/compatibility.js and into a separate file

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Unfortunately, as far as I can tell, we still need the ability to adjust certain API options depending on the browser environment in PDF.js version `2.0`. However, we should be able to separate this from the general compatibility code in the `src/shared/compatibility.js` file.
This commit is contained in:
Jonas Jenwald 2018-02-17 12:57:15 +01:00
parent 401f3a9d97
commit 5894bfa449
3 changed files with 54 additions and 29 deletions
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50
src/display/api_compatibility.js Normal file
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@ -0,0 +1,50 @@
/* Copyright 2018 Mozilla Foundation
*
* 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.
*/
let compatibilityParams = Object.create(null);
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
const userAgent =
(typeof navigator !== 'undefined' && navigator.userAgent) || '';
const isIE = /Trident/.test(userAgent);
const isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
const isIOSChrome = /CriOS/.test(userAgent);
const isSafari = /Safari\//.test(userAgent) &&
!/(Chrome\/|Android\s)/.test(userAgent);
// Checks if possible to use URL.createObjectURL()
// Support: IE, Chrome on iOS
(function checkOnBlobSupport() {
// Sometimes IE and Chrome on iOS losing the data created with
// createObjectURL(), see issues #3977 and #8081.
if (isIE || isIOSChrome) {
compatibilityParams.disableCreateObjectURL = true;
}
})();
// Support: Safari 6.0+, iOS
(function checkRangeRequests() {
// Safari has issues with cached range requests, see issue #3260.
// Last tested with version 6.0.4.
if (isSafari || isIOS) {
compatibilityParams.disableRange = true;
compatibilityParams.disableStream = true;
}
})();
}
const apiCompatibilityParams = Object.freeze(compatibilityParams);
export {
apiCompatibilityParams,
};

3
src/pdf.js
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@ -29,6 +29,7 @@ var pdfjsDisplayAnnotationLayer = require('./display/annotation_layer.js');
var pdfjsDisplayDOMUtils = require('./display/dom_utils.js');
var pdfjsDisplaySVG = require('./display/svg.js');
let pdfjsDisplayWorkerOptions = require('./display/worker_options.js');
let pdfjsDisplayAPICompatibility = require('./display/api_compatibility.js');
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
const isNodeJS = require('./shared/is_node.js');
@ -96,3 +97,5 @@ exports.getFilenameFromUrl = pdfjsDisplayDOMUtils.getFilenameFromUrl;
exports.LinkTarget = pdfjsDisplayDOMUtils.LinkTarget;
exports.addLinkAttributes = pdfjsDisplayDOMUtils.addLinkAttributes;
exports.GlobalWorkerOptions = pdfjsDisplayWorkerOptions.GlobalWorkerOptions;
exports.apiCompatibilityParams =
pdfjsDisplayAPICompatibility.apiCompatibilityParams;

30
src/shared/compatibility.js
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@ -29,14 +29,7 @@ if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('CHROME')) {
const globalScope = require('./global_scope');
const isNodeJS = require('./is_node');
var userAgent = (typeof navigator !== 'undefined' && navigator.userAgent) || '';
var isIOSChrome = userAgent.indexOf('CriOS') >= 0;
var isIE = userAgent.indexOf('Trident') >= 0;
var isIOS = /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent);
var isSafari = /Safari\//.test(userAgent) &&
!/(Chrome\/|Android\s)/.test(userAgent);
var hasDOM = typeof window === 'object' && typeof document === 'object';
const hasDOM = typeof window === 'object' && typeof document === 'object';
// Initializing PDFJS global object here, it case if we need to change/disable
// some PDF.js features, e.g. range requests
@ -68,27 +61,6 @@ PDFJS.compatibilityChecked = true;
};
})();
// Checks if possible to use URL.createObjectURL()
// Support: IE, Chrome on iOS
(function checkOnBlobSupport() {
// sometimes IE and Chrome on iOS loosing the data created with
// createObjectURL(), see #3977 and #8081
if (isIE || isIOSChrome) {
PDFJS.disableCreateObjectURL = true;
}
})();
// Support: Safari 6.0+, iOS
(function checkRangeRequests() {
// Safari has issues with cached range requests see:
// https://github.com/mozilla/pdf.js/issues/3260
// Last tested with version 6.0.4.
if (isSafari || isIOS) {
PDFJS.disableRange = true;
PDFJS.disableStream = true;
}
})();
// Provides document.currentScript support
// Support: IE, Chrome<29.
(function checkCurrentScript() {