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ES6-ify the code in web/firefoxcom.js

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These changes consists mainly of replacing `var` with `let`/`const`, and finally converting the `DownloadManager` to a proper class.
This commit is contained in:
Jonas Jenwald 2017-08-22 13:16:28 +02:00
parent 320779e6ed
commit aaff3385ee
1 changed files with 52 additions and 58 deletions
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68
web/firefoxcom.js
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@ -24,7 +24,7 @@ if (typeof PDFJSDev === 'undefined' ||
'FIREFOX and MOZCENTRAL builds.');
}
var FirefoxCom = (function FirefoxComClosure() {
let FirefoxCom = (function FirefoxComClosure() {
return {
/**
* Creates an event that the extension is listening for and will
@ -36,17 +36,18 @@ var FirefoxCom = (function FirefoxComClosure() {
* @return {*} The response.
*/
requestSync(action, data) {
var request = document.createTextNode('');
let request = document.createTextNode('');
document.documentElement.appendChild(request);
var sender = document.createEvent('CustomEvent');
let sender = document.createEvent('CustomEvent');
sender.initCustomEvent('pdf.js.message', true, false,
{ action, data, sync: true, });
request.dispatchEvent(sender);
var response = sender.detail.response;
let response = sender.detail.response;
document.documentElement.removeChild(request);
return response;
},
/**
* Creates an event that the extension is listening for and will
* asynchronously respond by calling the callback.
@ -56,11 +57,11 @@ var FirefoxCom = (function FirefoxComClosure() {
* with one data argument.
*/
request(action, data, callback) {
var request = document.createTextNode('');
let request = document.createTextNode('');
if (callback) {
document.addEventListener('pdf.js.response', function listener(event) {
var node = event.target;
var response = event.detail.response;
let node = event.target;
let response = event.detail.response;
document.documentElement.removeChild(node);
@ -70,7 +71,7 @@ var FirefoxCom = (function FirefoxComClosure() {
}
document.documentElement.appendChild(request);
var sender = document.createEvent('CustomEvent');
let sender = document.createEvent('CustomEvent');
sender.initCustomEvent('pdf.js.message', true, false, {
action,
data,
@ -82,20 +83,16 @@ var FirefoxCom = (function FirefoxComClosure() {
};
})();
var DownloadManager = (function DownloadManagerClosure() {
function DownloadManager() {}
DownloadManager.prototype = {
downloadUrl: function DownloadManager_downloadUrl(url, filename) {
class DownloadManager {
downloadUrl(url, filename) {
FirefoxCom.request('download', {
originalUrl: url,
filename,
});
},
}
downloadData: function DownloadManager_downloadData(data, filename,
contentType) {
var blobUrl = createObjectURL(data, contentType, false);
downloadData(data, filename, contentType) {
let blobUrl = createObjectURL(data, contentType, false);
FirefoxCom.request('download', {
blobUrl,
@ -103,15 +100,15 @@ var DownloadManager = (function DownloadManagerClosure() {
filename,
isAttachment: true,
});
},
}
download: function DownloadManager_download(blob, url, filename) {
let blobUrl = window.URL.createObjectURL(blob);
download(blob, url, filename) {
let blobUrl = URL.createObjectURL(blob);
let onResponse = (err) => {
if (err && this.onerror) {
this.onerror(err);
}
window.URL.revokeObjectURL(blobUrl);
URL.revokeObjectURL(blobUrl);
};
FirefoxCom.request('download', {
@ -119,11 +116,8 @@ var DownloadManager = (function DownloadManagerClosure() {
originalUrl: url,
filename,
}, onResponse);
},
};
return DownloadManager;
})();
}
}
class FirefoxPreferences extends BasePreferences {
_writeToStorage(prefObj) {
@ -135,7 +129,7 @@ class FirefoxPreferences extends BasePreferences {
_readFromStorage(prefObj) {
return new Promise(function(resolve) {
FirefoxCom.request('getPreferences', prefObj, function(prefStr) {
var readPrefs = JSON.parse(prefStr);
let readPrefs = JSON.parse(prefStr);
resolve(readPrefs);
});
});
@ -162,13 +156,13 @@ class MozL10n {
}
(function listenFindEvents() {
var events = [
const events = [
'find',
'findagain',
'findhighlightallchange',
'findcasesensitivitychange'
];
var handleEvent = function (evt) {
let handleEvent = function(evt) {
if (!PDFViewerApplication.initialized) {
return;
}
@ -183,7 +177,7 @@ class MozL10n {
});
};
for (var i = 0, len = events.length; i < len; i++) {
for (let i = 0, len = events.length; i < len; i++) {
window.addEventListener(events[i], handleEvent);
}
})();
@ -209,7 +203,7 @@ PDFViewerApplication.externalServices = {
},
initPassiveLoading(callbacks) {
var pdfDataRangeTransport;
let pdfDataRangeTransport;
window.addEventListener('message', function windowMessage(e) {
if (e.source !== null) {
@ -217,7 +211,7 @@ PDFViewerApplication.externalServices = {
console.warn('Rejected untrusted message from ' + e.origin);
return;
}
var args = e.data;
let args = e.data;
if (typeof args !== 'object' || !('pdfjsLoadAction' in args)) {
return;
@ -271,28 +265,28 @@ PDFViewerApplication.externalServices = {
},
createL10n() {
var mozL10n = document.mozL10n;
let mozL10n = document.mozL10n;
// TODO refactor mozL10n.setExternalLocalizerServices
return new MozL10n(mozL10n);
},
get supportsIntegratedFind() {
var support = FirefoxCom.requestSync('supportsIntegratedFind');
let support = FirefoxCom.requestSync('supportsIntegratedFind');
return shadow(this, 'supportsIntegratedFind', support);
},
get supportsDocumentFonts() {
var support = FirefoxCom.requestSync('supportsDocumentFonts');
let support = FirefoxCom.requestSync('supportsDocumentFonts');
return shadow(this, 'supportsDocumentFonts', support);
},
get supportsDocumentColors() {
var support = FirefoxCom.requestSync('supportsDocumentColors');
let support = FirefoxCom.requestSync('supportsDocumentColors');
return shadow(this, 'supportsDocumentColors', support);
},
get supportedMouseWheelZoomModifierKeys() {
var support = FirefoxCom.requestSync('supportedMouseWheelZoomModifierKeys');
let support = FirefoxCom.requestSync('supportedMouseWheelZoomModifierKeys');
return shadow(this, 'supportedMouseWheelZoomModifierKeys', support);
},
};