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Introduces LegacyPromise; polyfills DOM Promise

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This commit is contained in:
Yury Delendik 2014-01-03 18:17:05 -06:00
parent 122cd150d4
commit 5bf3e44e30
20 changed files with 263 additions and 156 deletions
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4
src/core/chunked_stream.js
View file

@ -15,7 +15,7 @@
* limitations under the License.
*/
/* globals assert, MissingDataException, isInt, NetworkManager, Promise,
isEmptyObj */
isEmptyObj, LegacyPromise */
'use strict';
@ -258,7 +258,7 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() {
this.requestsByChunk = {};
this.callbacksByRequest = {};
this.loadedStream = new Promise();
this.loadedStream = new LegacyPromise();
if (args.initialData) {
this.setInitialData(args.initialData);
}

12
src/core/core.js
View file

@ -15,8 +15,8 @@
* limitations under the License.
*/
/* globals assertWellFormed, calculateMD5, Catalog, error, info, isArray,
isArrayBuffer, isName, isStream, isString, Lexer,
Linearization, NullStream, PartialEvaluator, shadow, Stream,
isArrayBuffer, isName, isStream, isString, LegacyPromise,
Linearization, NullStream, PartialEvaluator, shadow, Stream, Lexer,
StreamsSequenceStream, stringToPDFString, stringToBytes, Util, XRef,
MissingDataException, Promise, Annotation, ObjectLoader, OperatorList
*/
@ -123,7 +123,7 @@ var Page = (function PageClosure() {
// TODO: add async inheritPageProp and remove this.
this.resourcesPromise = this.pdfManager.ensure(this, 'resources');
}
var promise = new Promise();
var promise = new LegacyPromise();
this.resourcesPromise.then(function resourceSuccess() {
var objectLoader = new ObjectLoader(this.resources.map,
keys,
@ -136,13 +136,13 @@ var Page = (function PageClosure() {
},
getOperatorList: function Page_getOperatorList(handler) {
var self = this;
var promise = new Promise();
var promise = new LegacyPromise();
function reject(e) {
promise.reject(e);
}
var pageListPromise = new Promise();
var pageListPromise = new LegacyPromise();
var pdfManager = this.pdfManager;
var contentStreamPromise = pdfManager.ensure(this, 'getContentStream',
@ -208,7 +208,7 @@ var Page = (function PageClosure() {
var self = this;
var textContentPromise = new Promise();
var textContentPromise = new LegacyPromise();
var pdfManager = this.pdfManager;
var contentStreamPromise = pdfManager.ensure(this, 'getContentStream',

6
src/core/evaluator.js
View file

@ -19,9 +19,9 @@
info, isArray, isCmd, isDict, isEOF, isName, isNum,
isStream, isString, JpegStream, Lexer, Metrics, Name, Parser,
Pattern, PDFImage, PDFJS, serifFonts, stdFontMap, symbolsFonts,
TilingPattern, warn, Util, Promise, UnsupportedManager,
TilingPattern, warn, Util, Promise, LegacyPromise,
RefSetCache, isRef, TextRenderingMode, CMapFactory, OPS,
UNSUPPORTED_FEATURES */
UNSUPPORTED_FEATURES, UnsupportedManager */
'use strict';
@ -548,7 +548,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
// dictionary
var parser = new Parser(new Lexer(stream, OP_MAP), false, xref);
var promise = new Promise();
var promise = new LegacyPromise();
var args = [];
while (true) {

8
src/core/image.js
View file

@ -15,7 +15,7 @@
* limitations under the License.
*/
/* globals ColorSpace, error, isArray, isStream, JpegStream, Name, Promise,
Stream, warn */
Stream, warn, LegacyPromise */
'use strict';
@ -129,9 +129,9 @@ var PDFImage = (function PDFImageClosure() {
*/
PDFImage.buildImage = function PDFImage_buildImage(callback, handler, xref,
res, image, inline) {
var imageDataPromise = new Promise();
var smaskPromise = new Promise();
var maskPromise = new Promise();
var imageDataPromise = new LegacyPromise();
var smaskPromise = new LegacyPromise();
var maskPromise = new LegacyPromise();
// The image data and smask data may not be ready yet, wait till both are
// resolved.
Promise.all([imageDataPromise, smaskPromise, maskPromise]).then(

16
src/core/obj.js
View file

@ -19,7 +19,7 @@
isStream, Lexer, log, Page, Parser, Promise, shadow,
stringToPDFString, stringToUTF8String, warn, isString, assert,
Promise, MissingDataException, XRefParseException, Stream,
ChunkedStream */
ChunkedStream, LegacyPromise */
'use strict';
@ -97,7 +97,7 @@ var Dict = (function DictClosure() {
if (xref) {
return xref.fetchIfRefAsync(value);
}
promise = new Promise();
promise = new LegacyPromise();
promise.resolve(value);
return promise;
}
@ -106,7 +106,7 @@ var Dict = (function DictClosure() {
if (xref) {
return xref.fetchIfRefAsync(value);
}
promise = new Promise();
promise = new LegacyPromise();
promise.resolve(value);
return promise;
}
@ -114,7 +114,7 @@ var Dict = (function DictClosure() {
if (xref) {
return xref.fetchIfRefAsync(value);
}
promise = new Promise();
promise = new LegacyPromise();
promise.resolve(value);
return promise;
},
@ -434,7 +434,7 @@ var Catalog = (function CatalogClosure() {
},
getPageDict: function Catalog_getPageDict(pageIndex) {
var promise = new Promise();
var promise = new LegacyPromise();
var nodesToVisit = [this.catDict.getRaw('Pages')];
var currentPageIndex = 0;
var xref = this.xref;
@ -1120,14 +1120,14 @@ var XRef = (function XRefClosure() {
},
fetchIfRefAsync: function XRef_fetchIfRefAsync(obj) {
if (!isRef(obj)) {
var promise = new Promise();
var promise = new LegacyPromise();
promise.resolve(obj);
return promise;
}
return this.fetchAsync(obj);
},
fetchAsync: function XRef_fetchAsync(ref, suppressEncryption) {
var promise = new Promise();
var promise = new LegacyPromise();
var tryFetch = function (promise) {
try {
promise.resolve(this.fetch(ref, suppressEncryption));
@ -1254,7 +1254,7 @@ var ObjectLoader = (function() {
load: function ObjectLoader_load() {
var keys = this.keys;
this.promise = new Promise();
this.promise = new LegacyPromise();
// Don't walk the graph if all the data is already loaded.
if (!(this.xref.stream instanceof ChunkedStream) ||
this.xref.stream.getMissingChunks().length === 0) {

12
src/core/pdf_manager.js
View file

@ -15,7 +15,7 @@
* limitations under the License.
*/
/* globals NotImplementedException, MissingDataException, Promise, Stream,
PDFDocument, ChunkedStreamManager */
PDFDocument, ChunkedStreamManager, LegacyPromise */
'use strict';
@ -81,7 +81,7 @@ var LocalPdfManager = (function LocalPdfManagerClosure() {
function LocalPdfManager(data, password) {
var stream = new Stream(data);
this.pdfModel = new PDFDocument(this, stream, password);
this.loadedStream = new Promise();
this.loadedStream = new LegacyPromise();
this.loadedStream.resolve(stream);
}
@ -90,7 +90,7 @@ var LocalPdfManager = (function LocalPdfManagerClosure() {
LocalPdfManager.prototype.ensure =
function LocalPdfManager_ensure(obj, prop, args) {
var promise = new Promise();
var promise = new LegacyPromise();
try {
var value = obj[prop];
var result;
@ -109,7 +109,7 @@ var LocalPdfManager = (function LocalPdfManagerClosure() {
LocalPdfManager.prototype.requestRange =
function LocalPdfManager_requestRange(begin, end) {
var promise = new Promise();
var promise = new LegacyPromise();
promise.resolve();
return promise;
};
@ -158,7 +158,7 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() {
NetworkPdfManager.prototype.ensure =
function NetworkPdfManager_ensure(obj, prop, args) {
var promise = new Promise();
var promise = new LegacyPromise();
this.ensureHelper(promise, obj, prop, args);
return promise;
};
@ -189,7 +189,7 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() {
NetworkPdfManager.prototype.requestRange =
function NetworkPdfManager_requestRange(begin, end) {
var promise = new Promise();
var promise = new LegacyPromise();
this.streamManager.requestRange(begin, end, function() {
promise.resolve();
});

41
src/core/worker.js
View file

@ -17,7 +17,7 @@
/* globals error, globalScope, InvalidPDFException, log,
MissingPDFException, PasswordException, PDFJS, Promise,
UnknownErrorException, NetworkManager, LocalPdfManager,
NetworkPdfManager, XRefParseException,
NetworkPdfManager, XRefParseException, LegacyPromise,
isInt, PasswordResponses, MessageHandler, Ref */
'use strict';
@ -27,7 +27,7 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
var pdfManager;
function loadDocument(recoveryMode) {
var loadDocumentPromise = new Promise();
var loadDocumentPromise = new LegacyPromise();
var parseSuccess = function parseSuccess() {
var numPagesPromise = pdfManager.ensureModel('numPages');
@ -71,7 +71,7 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
}
function getPdfManager(data) {
var pdfManagerPromise = new Promise();
var pdfManagerPromise = new LegacyPromise();
var source = data.source;
var disableRange = data.disableRange;
@ -239,7 +239,8 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
if (ex instanceof PasswordException) {
// after password exception prepare to receive a new password
// to repeat loading
pdfManager.passwordChangedPromise = new Promise();
pdfManager.passwordChangedPromise =
new LegacyPromise();
pdfManager.passwordChangedPromise.then(pdfManagerReady);
}
@ -276,31 +277,31 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
});
});
handler.on('GetPageIndex', function wphSetupGetPageIndex(data, promise) {
handler.on('GetPageIndex', function wphSetupGetPageIndex(data, deferred) {
var ref = new Ref(data.ref.num, data.ref.gen);
pdfManager.pdfModel.catalog.getPageIndex(ref).then(function (pageIndex) {
promise.resolve(pageIndex);
}, promise.reject.bind(promise));
deferred.resolve(pageIndex);
}, deferred.reject);
});
handler.on('GetDestinations',
function wphSetupGetDestinations(data, promise) {
function wphSetupGetDestinations(data, deferred) {
pdfManager.ensureCatalog('destinations').then(function(destinations) {
promise.resolve(destinations);
deferred.resolve(destinations);
});
}
);
handler.on('GetData', function wphSetupGetData(data, promise) {
handler.on('GetData', function wphSetupGetData(data, deferred) {
pdfManager.requestLoadedStream();
pdfManager.onLoadedStream().then(function(stream) {
promise.resolve(stream.bytes);
deferred.resolve(stream.bytes);
});
});
handler.on('DataLoaded', function wphSetupDataLoaded(data, promise) {
handler.on('DataLoaded', function wphSetupDataLoaded(data, deferred) {
pdfManager.onLoadedStream().then(function(stream) {
promise.resolve({ length: stream.bytes.byteLength });
deferred.resolve({ length: stream.bytes.byteLength });
});
});
@ -365,29 +366,29 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
});
}, this);
handler.on('GetTextContent', function wphExtractText(data, promise) {
handler.on('GetTextContent', function wphExtractText(data, deferred) {
pdfManager.getPage(data.pageIndex).then(function(page) {
var pageNum = data.pageIndex + 1;
var start = Date.now();
page.extractTextContent().then(function(textContent) {
promise.resolve(textContent);
deferred.resolve(textContent);
log('text indexing: page=%d - time=%dms', pageNum,
Date.now() - start);
}, function (e) {
// Skip errored pages
promise.reject(e);
deferred.reject(e);
});
});
});
handler.on('Cleanup', function wphCleanup(data, promise) {
handler.on('Cleanup', function wphCleanup(data, deferred) {
pdfManager.cleanup();
promise.resolve(true);
deferred.resolve(true);
});
handler.on('Terminate', function wphTerminate(data, promise) {
handler.on('Terminate', function wphTerminate(data, deferred) {
pdfManager.terminate();
promise.resolve();
deferred.resolve();
});
}
};

52
src/display/api.js
View file

@ -17,7 +17,7 @@
/* globals CanvasGraphics, combineUrl, createScratchCanvas, error,
FontLoader, globalScope, info, isArrayBuffer, loadJpegStream,
MessageHandler, PDFJS, Promise, StatTimer, warn,
PasswordResponses, Util, loadScript,
PasswordResponses, Util, loadScript, LegacyPromise,
FontFace */
'use strict';
@ -161,8 +161,8 @@ PDFJS.getDocument = function getDocument(source,
params[key] = source[key];
}
workerInitializedPromise = new PDFJS.Promise();
workerReadyPromise = new PDFJS.Promise();
workerInitializedPromise = new PDFJS.LegacyPromise();
workerReadyPromise = new PDFJS.LegacyPromise();
transport = new WorkerTransport(workerInitializedPromise,
workerReadyPromise, pdfDataRangeTransport, progressCallback);
workerInitializedPromise.then(function transportInitialized() {
@ -230,7 +230,7 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
* JavaScript strings in the name tree.
*/
getJavaScript: function PDFDocumentProxy_getJavaScript() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
var js = this.pdfInfo.javaScript;
promise.resolve(js);
return promise;
@ -251,7 +251,7 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
* ].
*/
getOutline: function PDFDocumentProxy_getOutline() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
var outline = this.pdfInfo.outline;
promise.resolve(outline);
return promise;
@ -263,7 +263,7 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
* {Metadata} object with information from the metadata section of the PDF.
*/
getMetadata: function PDFDocumentProxy_getMetadata() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
var info = this.pdfInfo.info;
var metadata = this.pdfInfo.metadata;
promise.resolve({
@ -273,7 +273,7 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
return promise;
},
isEncrypted: function PDFDocumentProxy_isEncrypted() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
promise.resolve(this.pdfInfo.encrypted);
return promise;
},
@ -282,7 +282,7 @@ var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
* the raw data from the PDF.
*/
getData: function PDFDocumentProxy_getData() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
this.transport.getData(promise);
return promise;
},
@ -363,7 +363,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
if (this.annotationsPromise)
return this.annotationsPromise;
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
this.annotationsPromise = promise;
this.transport.getAnnotations(this.pageInfo.pageIndex);
return promise;
@ -397,7 +397,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
// requested before. Make the request and create the promise.
if (!this.displayReadyPromise) {
this.receivingOperatorList = true;
this.displayReadyPromise = new Promise();
this.displayReadyPromise = new LegacyPromise();
this.operatorList = {
fnArray: [],
argsArray: [],
@ -444,9 +444,9 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
self._tryDestroy();
if (error) {
renderTask.reject(error);
renderTask.promise.reject(error);
} else {
renderTask.resolve();
renderTask.promise.resolve();
}
stats.timeEnd('Rendering');
stats.timeEnd('Overall');
@ -459,7 +459,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
* content from the page.
*/
getTextContent: function PDFPageProxy_getTextContent() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
this.transport.messageHandler.send('GetTextContent', {
pageIndex: this.pageNumber - 1
},
@ -473,7 +473,7 @@ var PDFPageProxy = (function PDFPageProxyClosure() {
* Stub for future feature.
*/
getOperationList: function PDFPageProxy_getOperationList() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
var operationList = { // not implemented
dependencyFontsID: null,
operatorList: null
@ -627,7 +627,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
loadFakeWorkerFiles: function WorkerTransport_loadFakeWorkerFiles() {
if (!PDFJS.fakeWorkerFilesLoadedPromise) {
PDFJS.fakeWorkerFilesLoadedPromise = new Promise();
PDFJS.fakeWorkerFilesLoadedPromise = new LegacyPromise();
// In the developer build load worker_loader which in turn loads all the
// other files and resolves the promise. In production only the
// pdf.worker.js file is needed.
@ -840,7 +840,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
error(data.error);
}, this);
messageHandler.on('JpegDecode', function(data, promise) {
messageHandler.on('JpegDecode', function(data, deferred) {
var imageUrl = data[0];
var components = data[1];
if (components != 3 && components != 1)
@ -869,7 +869,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
buf[j] = data[i];
}
}
promise.resolve({ data: buf, width: width, height: height});
deferred.resolve({ data: buf, width: width, height: height});
}).bind(this);
img.src = imageUrl;
});
@ -894,7 +894,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
},
dataLoaded: function WorkerTransport_dataLoaded() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
this.messageHandler.send('DataLoaded', null, function(args) {
promise.resolve(args);
});
@ -905,14 +905,14 @@ var WorkerTransport = (function WorkerTransportClosure() {
var pageIndex = pageNumber - 1;
if (pageIndex in this.pagePromises)
return this.pagePromises[pageIndex];
var promise = new PDFJS.Promise('Page ' + pageNumber);
var promise = new PDFJS.LegacyPromise();
this.pagePromises[pageIndex] = promise;
this.messageHandler.send('GetPageRequest', { pageIndex: pageIndex });
return promise;
},
getPageIndex: function WorkerTransport_getPageIndexByRef(ref) {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
this.messageHandler.send('GetPageIndex', { ref: ref },
function (pageIndex) {
promise.resolve(pageIndex);
@ -927,7 +927,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
},
getDestinations: function WorkerTransport_getDestinations() {
var promise = new PDFJS.Promise();
var promise = new PDFJS.LegacyPromise();
this.messageHandler.send('GetDestinations', null,
function transportDestinations(destinations) {
promise.resolve(destinations);
@ -976,7 +976,7 @@ var PDFObjects = (function PDFObjectsClosure() {
return this.objs[objId];
var obj = {
promise: new Promise(objId),
promise: new LegacyPromise(),
data: null,
resolved: false
};
@ -1057,17 +1057,13 @@ var PDFObjects = (function PDFObjectsClosure() {
};
return PDFObjects;
})();
/*
* RenderTask is basically a promise but adds a cancel function to terminate it.
*/
var RenderTask = (function RenderTaskClosure() {
function RenderTask(internalRenderTask) {
this.internalRenderTask = internalRenderTask;
Promise.call(this);
this.promise = new PDFJS.LegacyPromise();
}
RenderTask.prototype = Object.create(Promise.prototype);
/**
* Cancel the rendering task. If the task is curently rendering it will not be
* cancelled until graphics pauses with a timeout. The promise that this

5
src/display/canvas.js
View file

@ -17,7 +17,7 @@
/* globals ColorSpace, DeviceCmykCS, DeviceGrayCS, DeviceRgbCS, error,
FONT_IDENTITY_MATRIX, IDENTITY_MATRIX, ImageData, isArray, isNum,
Pattern, TilingPattern, Util, warn, assert, info,
TextRenderingMode, OPS */
TextRenderingMode, OPS, Promise */
'use strict';
@ -508,6 +508,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var commonObjs = this.commonObjs;
var objs = this.objs;
var fnId;
var deferred = Promise.resolve();
while (true) {
if (stepper && i === stepper.nextBreakPoint) {
@ -549,7 +550,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
// to continue exeution after a short delay.
// However, this is only possible if a 'continueCallback' is passed in.
if (continueCallback && Date.now() > endTime) {
setTimeout(continueCallback, 0);
deferred.then(continueCallback);
return i;
}

13
src/shared/annotation.js
View file

@ -16,7 +16,8 @@
*/
/* globals Util, isDict, isName, stringToPDFString, warn, Dict, Stream,
stringToBytes, PDFJS, isWorker, assert, NotImplementedException,
Promise, isArray, ObjectLoader, isValidUrl, OperatorList, OPS */
Promise, isArray, ObjectLoader, isValidUrl, OperatorList, OPS,
LegacyPromise */
'use strict';
@ -141,7 +142,7 @@ var Annotation = (function AnnotationClosure() {
},
loadResources: function(keys) {
var promise = new Promise();
var promise = new LegacyPromise();
this.appearance.dict.getAsync('Resources').then(function(resources) {
if (!resources) {
promise.resolve();
@ -160,7 +161,7 @@ var Annotation = (function AnnotationClosure() {
getOperatorList: function Annotation_getToOperatorList(evaluator) {
var promise = new Promise();
var promise = new LegacyPromise();
if (!this.appearance) {
promise.resolve(new OperatorList());
@ -277,7 +278,7 @@ var Annotation = (function AnnotationClosure() {
annotationsReadyPromise.reject(e);
}
var annotationsReadyPromise = new Promise();
var annotationsReadyPromise = new LegacyPromise();
var annotationPromises = [];
for (var i = 0, n = annotations.length; i < n; ++i) {
@ -439,7 +440,7 @@ var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() {
return Annotation.prototype.getOperatorList.call(this, evaluator);
}
var promise = new Promise();
var promise = new LegacyPromise();
var opList = new OperatorList();
var data = this.data;
@ -516,7 +517,7 @@ var TextAnnotation = (function TextAnnotationClosure() {
Util.inherit(TextAnnotation, Annotation, {
getOperatorList: function TextAnnotation_getOperatorList(evaluator) {
var promise = new Promise();
var promise = new LegacyPromise();
promise.resolve(new OperatorList());
return promise;
},

120
src/shared/util.js
View file

@ -14,7 +14,8 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* globals Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL */
/* globals Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL,
Promise */
'use strict';
@ -810,6 +811,24 @@ function isPDFFunction(v) {
}
/**
* Legacy support for PDFJS Promise implementation.
* TODO remove eventually
*/
var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() {
return function LegacyPromise() {
var resolve, reject;
var promise = new Promise(function (resolve_, reject_) {
resolve = resolve_;
reject = reject_;
});
promise.resolve = resolve;
promise.reject = reject;
return promise;
};
})();
/**
* Polyfill for Promises:
* The following promise implementation tries to generally implment the
* Promise/A+ spec. Some notable differences from other promise libaries are:
* - There currently isn't a seperate deferred and promise object.
@ -818,7 +837,40 @@ function isPDFFunction(v) {
* Based off of the work in:
* https://bugzilla.mozilla.org/show_bug.cgi?id=810490
*/
var Promise = PDFJS.Promise = (function PromiseClosure() {
(function PromiseClosure() {
if (globalScope.Promise) {
// Promises existing in the DOM/Worker, checking presence of all/resolve
if (typeof globalScope.Promise.all !== 'function') {
globalScope.Promise.all = function (iterable) {
var count = 0, results = [], resolve, reject;
var promise = new globalScope.Promise(function (resolve_, reject_) {
resolve = resolve_;
reject = reject_;
});
iterable.forEach(function (p, i) {
count++;
p.then(function (result) {
results[i] = result;
count--;
if (count === 0) {
resolve(results);
}
}, reject);
});
if (count === 0) {
resolve(results);
}
return promise;
};
}
if (typeof globalScope.Promise.resolve !== 'function') {
globalScope.Promise.resolve = function (x) {
return new globalScope.Promise(function (resolve) { resolve(x); });
};
}
return;
}
//#if !MOZCENTRAL
var STATUS_PENDING = 0;
var STATUS_RESOLVED = 1;
var STATUS_REJECTED = 2;
@ -851,6 +903,8 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
},
runHandlers: function runHandlers() {
var RUN_TIMEOUT = 1; // ms
var timeoutAt = Date.now() + RUN_TIMEOUT;
while (this.handlers.length > 0) {
var handler = this.handlers.shift();
@ -876,6 +930,14 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
}
handler.nextPromise._updateStatus(nextStatus, nextValue);
if (Date.now() >= timeoutAt) {
break;
}
}
if (this.handlers.length > 0) {
setTimeout(this.runHandlers.bind(this), 0);
return;
}
this.running = false;
@ -926,9 +988,10 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
}
};
function Promise() {
function Promise(resolver) {
this._status = STATUS_PENDING;
this._handlers = [];
resolver.call(this, this._resolve.bind(this), this._reject.bind(this));
}
/**
* Builds a promise that is resolved when all the passed in promises are
@ -937,11 +1000,15 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
* @return {Promise} New dependant promise.
*/
Promise.all = function Promise_all(promises) {
var deferred = new Promise();
var resolveAll, rejectAll;
var deferred = new Promise(function (resolve, reject) {
resolveAll = resolve;
rejectAll = reject;
});
var unresolved = promises.length;
var results = [];
if (unresolved === 0) {
deferred.resolve(results);
resolveAll(results);
return deferred;
}
function reject(reason) {
@ -949,7 +1016,7 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
return;
}
results = [];
deferred.reject(reason);
rejectAll(reason);
}
for (var i = 0, ii = promises.length; i < ii; ++i) {
var promise = promises[i];
@ -961,7 +1028,7 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
results[i] = value;
unresolved--;
if (unresolved === 0)
deferred.resolve(results);
resolveAll(results);
};
})(i);
if (Promise.isPromise(promise)) {
@ -980,6 +1047,14 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
Promise.isPromise = function Promise_isPromise(value) {
return value && typeof value.then === 'function';
};
/**
* Creates resolved promise
* @param x resolve value
* @returns {Promise}
*/
Promise.resolve = function Promise_resolve(x) {
return new Promise(function (resolve) { resolve(x); });
};
Promise.prototype = {
_status: null,
@ -1011,24 +1086,19 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
HandlerManager.scheduleHandlers(this);
},
get isResolved() {
return this._status === STATUS_RESOLVED;
},
get isRejected() {
return this._status === STATUS_REJECTED;
},
resolve: function Promise_resolve(value) {
_resolve: function Promise_resolve(value) {
this._updateStatus(STATUS_RESOLVED, value);
},
reject: function Promise_reject(reason) {
_reject: function Promise_reject(reason) {
this._updateStatus(STATUS_REJECTED, reason);
},
then: function Promise_then(onResolve, onReject) {
var nextPromise = new Promise();
var nextPromise = new Promise(function (resolve, reject) {
this.resolve = reject;
this.reject = reject;
});
this._handlers.push({
thisPromise: this,
onResolve: onResolve,
@ -1040,7 +1110,10 @@ var Promise = PDFJS.Promise = (function PromiseClosure() {
}
};
return Promise;
globalScope.Promise = Promise;
//#else
//throw new Error('DOM Promise is not present');
//#endif
})();
var StatTimer = (function StatTimerClosure() {
@ -1172,7 +1245,12 @@ function MessageHandler(name, comObj) {
} else if (data.action in ah) {
var action = ah[data.action];
if (data.callbackId) {
var promise = new Promise();
var deferred = {};
var promise = new Promise(function (resolve, reject) {
deferred.resolve = resolve;
deferred.reject = reject;
});
deferred.promise = promise;
promise.then(function(resolvedData) {
comObj.postMessage({
isReply: true,
@ -1180,7 +1258,7 @@ function MessageHandler(name, comObj) {
data: resolvedData
});
});
action[0].call(action[1], data.data, promise);
action[0].call(action[1], data.data, deferred);
} else {
action[0].call(action[1], data.data);
}