Adds EventBus.

web/dom_events.js

@@ -0,0 +1,152 @@
+/* Copyright 2016 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+(function (root, factory) {
+  if (typeof define === 'function' && define.amd) {
+    define('pdfjs-web/dom_events', ['exports', 'pdfjs-web/ui_utils'], factory);
+  } else if (typeof exports !== 'undefined') {
+    factory(exports, require('./ui_utils.js'));
+  } else {
+    factory((root.pdfjsWebDOMEvents = {}), root.pdfjsWebUIUtils);
+  }
+}(this, function (exports, uiUtils) {
+  var EventBus = uiUtils.EventBus;
+
+  // Attaching to the application event bus to dispatch events to the DOM for
+  // backwards viewer API compatibility.
+  function attachDOMEventsToEventBus(eventBus) {
+    eventBus.on('documentload', function () {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('documentload', true, true, {});
+      window.dispatchEvent(event);
+    });
+    eventBus.on('pagerendered', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('pagerendered', true, true, {
+        pageNumber: e.pageNumber,
+        cssTransform: e.cssTransform,
+      });
+      e.source.div.dispatchEvent(event);
+    });
+    eventBus.on('textlayerrendered', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('textlayerrendered', true, true, {
+        pageNumber: e.pageNumber
+      });
+      e.source.textLayerDiv.dispatchEvent(event);
+    });
+    eventBus.on('pagechange', function (e) {
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('pagechange', true, true, window, 0);
+      event.updateInProgress = e.updateInProgress;
+      event.pageNumber = e.pageNumber;
+      event.previousPageNumber = e.previousPageNumber;
+      e.source.container.dispatchEvent(event);
+    });
+    eventBus.on('pagesinit', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('pagesinit', true, true, null);
+      e.source.container.dispatchEvent(event);
+    });
+    eventBus.on('pagesloaded', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('pagesloaded', true, true, {
+        pagesCount: e.pagesCount
+      });
+      e.source.container.dispatchEvent(event);
+    });
+    eventBus.on('scalechange', function (e) {
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('scalechange', true, true, window, 0);
+      event.scale = e.scale;
+      event.presetValue = e.presetValue;
+      e.source.container.dispatchEvent(event);
+    });
+    eventBus.on('updateviewarea', function (e) {
+      var event = document.createEvent('UIEvents');
+      event.initUIEvent('updateviewarea', true, true, window, 0);
+      event.location = e.location;
+      e.source.container.dispatchEvent(event);
+    });
+    eventBus.on('find', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('find' + e.type, true, true, {
+        query: e.query,
+        caseSensitive: e.caseSensitive,
+        highlightAll: e.highlightAll,
+        findPrevious: e.findPrevious
+      });
+      window.dispatchEvent(event);
+    });
+    eventBus.on('attachmentsloaded', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('attachmentsloaded', true, true, {
+        attachmentsCount: e.attachmentsCount
+      });
+      e.source.container.dispatchEvent(event);
+    });
+    eventBus.on('sidebarviewchanged', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('sidebarviewchanged', true, true, {
+        view: e.view,
+      });
+      e.source.outerContainer.dispatchEvent(event);
+    });
+    eventBus.on('pagemode', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('pagemode', true, true, {
+        mode: e.mode,
+      });
+      e.source.pdfViewer.container.dispatchEvent(event);
+    });
+    eventBus.on('namedaction', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('namedaction', true, true, {
+        action: e.action
+      });
+      e.source.pdfViewer.container.dispatchEvent(event);
+    });
+    eventBus.on('presentationmodechanged', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('presentationmodechanged', true, true, {
+        active: e.active,
+        switchInProgress: e.switchInProgress
+      });
+      window.dispatchEvent(event);
+    });
+    eventBus.on('outlineloaded', function (e) {
+      var event = document.createEvent('CustomEvent');
+      event.initCustomEvent('outlineloaded', true, true, {
+        outlineCount: e.outlineCount
+      });
+      e.source.container.dispatchEvent(event);
+    });
+  }
+
+  var globalEventBus = null;
+  function getGlobalEventBus() {
+    if (globalEventBus) {
+      return globalEventBus;
+    }
+    globalEventBus = new EventBus();
+    attachDOMEventsToEventBus(globalEventBus);
+    return globalEventBus;
+  }
+
+  exports.attachDOMEventsToEventBus = attachDOMEventsToEventBus;
+  exports.getGlobalEventBus = getGlobalEventBus;
+}));