Merge pull request #8752 from Snuffleupagus/es6-dom_events

ES6-ify the code in `web/dom_events.js`

web/dom_events.js

@@ -19,116 +19,116 @@ import { EventBus } from './ui_utils';
 // backwards viewer API compatibility.
 function attachDOMEventsToEventBus(eventBus) {
   eventBus.on('documentload', function() {
-    var event = document.createEvent('CustomEvent');
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('documentload', true, true, {});
     window.dispatchEvent(event);
   });
-  eventBus.on('pagerendered', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('pagerendered', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('pagerendered', true, true, {
-      pageNumber: e.pageNumber,
-      cssTransform: e.cssTransform,
+      pageNumber: evt.pageNumber,
+      cssTransform: evt.cssTransform,
     });
-    e.source.div.dispatchEvent(event);
+    evt.source.div.dispatchEvent(event);
   });
-  eventBus.on('textlayerrendered', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('textlayerrendered', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('textlayerrendered', true, true, {
-      pageNumber: e.pageNumber,
+      pageNumber: evt.pageNumber,
     });
-    e.source.textLayerDiv.dispatchEvent(event);
+    evt.source.textLayerDiv.dispatchEvent(event);
   });
-  eventBus.on('pagechange', function (e) {
-    var event = document.createEvent('UIEvents');
+  eventBus.on('pagechange', function(evt) {
+    let event = document.createEvent('UIEvents');
     event.initUIEvent('pagechange', true, true, window, 0);
-    event.pageNumber = e.pageNumber;
-    e.source.container.dispatchEvent(event);
+    event.pageNumber = evt.pageNumber;
+    evt.source.container.dispatchEvent(event);
   });
-  eventBus.on('pagesinit', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('pagesinit', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('pagesinit', true, true, null);
-    e.source.container.dispatchEvent(event);
+    evt.source.container.dispatchEvent(event);
   });
-  eventBus.on('pagesloaded', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('pagesloaded', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('pagesloaded', true, true, {
-      pagesCount: e.pagesCount,
+      pagesCount: evt.pagesCount,
     });
-    e.source.container.dispatchEvent(event);
+    evt.source.container.dispatchEvent(event);
   });
-  eventBus.on('scalechange', function (e) {
-    var event = document.createEvent('UIEvents');
+  eventBus.on('scalechange', function(evt) {
+    let event = document.createEvent('UIEvents');
     event.initUIEvent('scalechange', true, true, window, 0);
-    event.scale = e.scale;
-    event.presetValue = e.presetValue;
-    e.source.container.dispatchEvent(event);
+    event.scale = evt.scale;
+    event.presetValue = evt.presetValue;
+    evt.source.container.dispatchEvent(event);
   });
-  eventBus.on('updateviewarea', function (e) {
-    var event = document.createEvent('UIEvents');
+  eventBus.on('updateviewarea', function(evt) {
+    let event = document.createEvent('UIEvents');
     event.initUIEvent('updateviewarea', true, true, window, 0);
-    event.location = e.location;
-    e.source.container.dispatchEvent(event);
+    event.location = evt.location;
+    evt.source.container.dispatchEvent(event);
   });
-  eventBus.on('find', function (e) {
-    if (e.source === window) {
+  eventBus.on('find', function(evt) {
+    if (evt.source === window) {
       return; // event comes from FirefoxCom, no need to replicate
     }
-    var event = document.createEvent('CustomEvent');
-    event.initCustomEvent('find' + e.type, true, true, {
-      query: e.query,
-      phraseSearch: e.phraseSearch,
-      caseSensitive: e.caseSensitive,
-      highlightAll: e.highlightAll,
-      findPrevious: e.findPrevious,
+    let event = document.createEvent('CustomEvent');
+    event.initCustomEvent('find' + evt.type, true, true, {
+      query: evt.query,
+      phraseSearch: evt.phraseSearch,
+      caseSensitive: evt.caseSensitive,
+      highlightAll: evt.highlightAll,
+      findPrevious: evt.findPrevious,
     });
     window.dispatchEvent(event);
   });
-  eventBus.on('attachmentsloaded', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('attachmentsloaded', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('attachmentsloaded', true, true, {
-      attachmentsCount: e.attachmentsCount,
+      attachmentsCount: evt.attachmentsCount,
     });
-    e.source.container.dispatchEvent(event);
+    evt.source.container.dispatchEvent(event);
   });
-  eventBus.on('sidebarviewchanged', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('sidebarviewchanged', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('sidebarviewchanged', true, true, {
-      view: e.view,
+      view: evt.view,
     });
-    e.source.outerContainer.dispatchEvent(event);
+    evt.source.outerContainer.dispatchEvent(event);
   });
-  eventBus.on('pagemode', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('pagemode', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('pagemode', true, true, {
-      mode: e.mode,
+      mode: evt.mode,
     });
-    e.source.pdfViewer.container.dispatchEvent(event);
+    evt.source.pdfViewer.container.dispatchEvent(event);
   });
-  eventBus.on('namedaction', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('namedaction', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('namedaction', true, true, {
-      action: e.action,
+      action: evt.action,
     });
-    e.source.pdfViewer.container.dispatchEvent(event);
+    evt.source.pdfViewer.container.dispatchEvent(event);
   });
-  eventBus.on('presentationmodechanged', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('presentationmodechanged', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('presentationmodechanged', true, true, {
-      active: e.active,
-      switchInProgress: e.switchInProgress,
+      active: evt.active,
+      switchInProgress: evt.switchInProgress,
     });
     window.dispatchEvent(event);
   });
-  eventBus.on('outlineloaded', function (e) {
-    var event = document.createEvent('CustomEvent');
+  eventBus.on('outlineloaded', function(evt) {
+    let event = document.createEvent('CustomEvent');
     event.initCustomEvent('outlineloaded', true, true, {
-      outlineCount: e.outlineCount,
+      outlineCount: evt.outlineCount,
     });
-    e.source.container.dispatchEvent(event);
+    evt.source.container.dispatchEvent(event);
   });
 }
 
-var globalEventBus = null;
+let globalEventBus = null;
 function getGlobalEventBus() {
   if (globalEventBus) {
     return globalEventBus;