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Convert PDFDocumentLoadingTask, in src/display/api.js, to an ES6 class

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Also deprecates the `then` method, in favour of the `promise` getter.
This commit is contained in:
Jonas Jenwald 2018-11-08 13:40:06 +01:00
parent 5f15dc2023
commit ef8e5fd77c
14 changed files with 82 additions and 68 deletions
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95
src/display/api.js
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@ -15,10 +15,11 @@
/* globals requirejs, __non_webpack_require__ */
import {
assert, createPromiseCapability, getVerbosityLevel, info, InvalidPDFException,
isArrayBuffer, isSameOrigin, MissingPDFException, NativeImageDecoding,
PasswordException, setVerbosityLevel, shadow, stringToBytes,
UnexpectedResponseException, UnknownErrorException, unreachable, URL, warn
assert, createPromiseCapability, deprecated, getVerbosityLevel, info,
InvalidPDFException, isArrayBuffer, isSameOrigin, MissingPDFException,
NativeImageDecoding, PasswordException, setVerbosityLevel, shadow,
stringToBytes, UnexpectedResponseException, UnknownErrorException,
unreachable, URL, warn
} from '../shared/util';
import {
DOMCanvasFactory, DOMCMapReaderFactory, DummyStatTimer, loadScript,
@ -427,56 +428,55 @@ function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
* @class
* @alias PDFDocumentLoadingTask
*/
var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
var nextDocumentId = 0;
const PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
let nextDocumentId = 0;
/** @constructs PDFDocumentLoadingTask */
function PDFDocumentLoadingTask() {
this._capability = createPromiseCapability();
this._transport = null;
this._worker = null;
class PDFDocumentLoadingTask {
constructor() {
this._capability = createPromiseCapability();
this._transport = null;
this._worker = null;
/**
* Unique document loading task id -- used in MessageHandlers.
* @type {string}
*/
this.docId = 'd' + (nextDocumentId++);
/**
* Unique document loading task id -- used in MessageHandlers.
* @type {string}
*/
this.docId = 'd' + (nextDocumentId++);
/**
* Shows if loading task is destroyed.
* @type {boolean}
*/
this.destroyed = false;
/**
* Shows if loading task is destroyed.
* @type {boolean}
*/
this.destroyed = false;
/**
* Callback to request a password if wrong or no password was provided.
* The callback receives two parameters: function that needs to be called
* with new password and reason (see {PasswordResponses}).
*/
this.onPassword = null;
/**
* Callback to request a password if wrong or no password was provided.
* The callback receives two parameters: function that needs to be called
* with new password and reason (see {PasswordResponses}).
*/
this.onPassword = null;
/**
* Callback to be able to monitor the loading progress of the PDF file
* (necessary to implement e.g. a loading bar). The callback receives
* an {Object} with the properties: {number} loaded and {number} total.
*/
this.onProgress = null;
/**
* Callback to be able to monitor the loading progress of the PDF file
* (necessary to implement e.g. a loading bar). The callback receives
* an {Object} with the properties: {number} loaded and {number} total.
*/
this.onProgress = null;
/**
* Callback to when unsupported feature is used. The callback receives
* an {UNSUPPORTED_FEATURES} argument.
*/
this.onUnsupportedFeature = null;
}
/**
* Callback to when unsupported feature is used. The callback receives
* an {UNSUPPORTED_FEATURES} argument.
*/
this.onUnsupportedFeature = null;
}
PDFDocumentLoadingTask.prototype =
/** @lends PDFDocumentLoadingTask.prototype */ {
/**
* @return {Promise}
*/
get promise() {
return this._capability.promise;
},
}
/**
* Aborts all network requests and destroys worker.
@ -486,7 +486,7 @@ var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
destroy() {
this.destroyed = true;
var transportDestroyed = !this._transport ? Promise.resolve() :
const transportDestroyed = !this._transport ? Promise.resolve() :
this._transport.destroy();
return transportDestroyed.then(() => {
this._transport = null;
@ -495,7 +495,7 @@ var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
this._worker = null;
}
});
},
}
/**
* Registers callbacks to indicate the document loading completion.
@ -505,11 +505,12 @@ var PDFDocumentLoadingTask = (function PDFDocumentLoadingTaskClosure() {
* @return {Promise} A promise that is resolved after the onFulfilled or
* onRejected callback.
*/
then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) {
then(onFulfilled, onRejected) {
deprecated('PDFDocumentLoadingTask.then method, ' +
'use the `promise` getter instead.');
return this.promise.then.apply(this.promise, arguments);
},
};
}
}
return PDFDocumentLoadingTask;
})();