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7c5ba9aad5
Unless the debugging tools (i.e. `PDFBug`) are enabled, or the `browsertest` is running, the `PDFPageProxy.stats` aren't actually used for anything. Rather than initializing unnecessary `StatTimer` instances, we can simply re-use *one* dummy class (with static methods) for every page. Note that by using a dummy `StatTimer` in this way, rather than letting `PDFPageProxy.stats` be undefined, we don't need to guard *every* single stats collection callsite. Since it wouldn't make much sense to attempt to use `PDFPageProxy.stats` when stat collection is disabled, it was instead changed to a "private" property (i.e. `PDFPageProxy._stats`) and a getter was added for accessing `PDFPageProxy.stats`. This getter will now return `null` when stat collection is disabled, making that case easy to handle. For benchmarking purposes, the test-suite used to re-create the `StatTimer` after loading/rendering each page. However, modifying properties on various API code from the outside in this way seems very error-prone, and is an anti-pattern that we really should avoid at all cost. Hence the `PDFPageProxy.cleanup` method was modified to accept an optional parameter, which will take care of resetting `this.stats` when necessary, and `test/driver.js` was updated accordingly. Finally, a tiny bit more validation was added on the viewer side, to ensure that all the code we're attempting to access is defined when handling `PDFPageProxy` stats.
76 lines
3.5 KiB
JavaScript
76 lines
3.5 KiB
JavaScript
/* Copyright 2012 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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/* eslint-disable no-unused-vars */
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'use strict';
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var pdfjsVersion =
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typeof PDFJSDev !== 'undefined' ? PDFJSDev.eval('BUNDLE_VERSION') : void 0;
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var pdfjsBuild =
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typeof PDFJSDev !== 'undefined' ? PDFJSDev.eval('BUNDLE_BUILD') : void 0;
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var pdfjsSharedUtil = require('./shared/util.js');
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var pdfjsDisplayGlobal = require('./display/global.js');
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var pdfjsDisplayAPI = require('./display/api.js');
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var pdfjsDisplayTextLayer = require('./display/text_layer.js');
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var pdfjsDisplayAnnotationLayer = require('./display/annotation_layer.js');
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var pdfjsDisplayDOMUtils = require('./display/dom_utils.js');
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var pdfjsDisplaySVG = require('./display/svg.js');
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if (typeof PDFJSDev === 'undefined' ||
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!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
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if (pdfjsSharedUtil.isNodeJS()) {
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var PDFNodeStream = require('./display/node_stream.js').PDFNodeStream;
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pdfjsDisplayAPI.setPDFNetworkStreamClass(PDFNodeStream);
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} else if (typeof Response !== 'undefined' && 'body' in Response.prototype &&
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typeof ReadableStream !== 'undefined') {
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var PDFFetchStream = require('./display/fetch_stream.js').PDFFetchStream;
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pdfjsDisplayAPI.setPDFNetworkStreamClass(PDFFetchStream);
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} else {
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var PDFNetworkStream = require('./display/network.js').PDFNetworkStream;
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pdfjsDisplayAPI.setPDFNetworkStreamClass(PDFNetworkStream);
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}
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}
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exports.PDFJS = pdfjsDisplayGlobal.PDFJS;
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exports.build = pdfjsDisplayAPI.build;
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exports.version = pdfjsDisplayAPI.version;
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exports.getDocument = pdfjsDisplayAPI.getDocument;
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exports.LoopbackPort = pdfjsDisplayAPI.LoopbackPort;
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exports.PDFDataRangeTransport = pdfjsDisplayAPI.PDFDataRangeTransport;
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exports.PDFWorker = pdfjsDisplayAPI.PDFWorker;
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exports.renderTextLayer = pdfjsDisplayTextLayer.renderTextLayer;
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exports.AnnotationLayer = pdfjsDisplayAnnotationLayer.AnnotationLayer;
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exports.CustomStyle = pdfjsDisplayDOMUtils.CustomStyle;
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exports.createPromiseCapability = pdfjsSharedUtil.createPromiseCapability;
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exports.PasswordResponses = pdfjsSharedUtil.PasswordResponses;
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exports.InvalidPDFException = pdfjsSharedUtil.InvalidPDFException;
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exports.MissingPDFException = pdfjsSharedUtil.MissingPDFException;
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exports.SVGGraphics = pdfjsDisplaySVG.SVGGraphics;
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exports.NativeImageDecoding = pdfjsSharedUtil.NativeImageDecoding;
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exports.UnexpectedResponseException =
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pdfjsSharedUtil.UnexpectedResponseException;
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exports.OPS = pdfjsSharedUtil.OPS;
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exports.UNSUPPORTED_FEATURES = pdfjsSharedUtil.UNSUPPORTED_FEATURES;
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exports.createValidAbsoluteUrl = pdfjsSharedUtil.createValidAbsoluteUrl;
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exports.createObjectURL = pdfjsSharedUtil.createObjectURL;
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exports.removeNullCharacters = pdfjsSharedUtil.removeNullCharacters;
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exports.shadow = pdfjsSharedUtil.shadow;
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exports.createBlob = pdfjsSharedUtil.createBlob;
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exports.RenderingCancelledException =
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pdfjsDisplayDOMUtils.RenderingCancelledException;
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exports.getFilenameFromUrl = pdfjsDisplayDOMUtils.getFilenameFromUrl;
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exports.addLinkAttributes = pdfjsDisplayDOMUtils.addLinkAttributes;
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