1 files changed, 129 insertions, 0 deletions
diff --git a/components/jetpack/sdk/places/events.js b/components/jetpack/sdk/places/events.js
new file mode 100644
index 000000000..c5e728039
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+++ b/components/jetpack/sdk/places/events.js
@@ -0,0 +1,129 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+'use strict';
+
+module.metadata = {
+  'stability': 'experimental',
+  'engines': {
+    'Palemoon': '*',
+    'Firefox': '*',
+    "SeaMonkey": '*'
+  }
+};
+
+const { Cc, Ci } = require('chrome');
+const { Unknown } = require('../platform/xpcom');
+const { Class } = require('../core/heritage');
+const { merge } = require('../util/object');
+const bookmarkService = Cc['@mozilla.org/browser/nav-bookmarks-service;1']
+                        .getService(Ci.nsINavBookmarksService);
+const historyService = Cc['@mozilla.org/browser/nav-history-service;1']
+                       .getService(Ci.nsINavHistoryService);
+const { mapBookmarkItemType } = require('./utils');
+const { EventTarget } = require('../event/target');
+const { emit } = require('../event/core');
+const { when } = require('../system/unload');
+
+const emitter = EventTarget();
+
+var HISTORY_ARGS = {
+  onBeginUpdateBatch: [],
+  onEndUpdateBatch: [],
+  onClearHistory: [],
+  onDeleteURI: ['url'],
+  onDeleteVisits: ['url', 'visitTime'],
+  onPageChanged: ['url', 'property', 'value'],
+  onTitleChanged: ['url', 'title'],
+  onVisit: [
+    'url', 'visitId', 'time', 'sessionId', 'referringId', 'transitionType'
+  ]
+};
+
+var HISTORY_EVENTS = {
+  onBeginUpdateBatch: 'history-start-batch',
+  onEndUpdateBatch: 'history-end-batch',
+  onClearHistory: 'history-start-clear',
+  onDeleteURI: 'history-delete-url',
+  onDeleteVisits: 'history-delete-visits',
+  onPageChanged: 'history-page-changed',
+  onTitleChanged: 'history-title-changed',
+  onVisit: 'history-visit'
+};
+
+var BOOKMARK_ARGS = {
+  onItemAdded: [
+    'id', 'parentId', 'index', 'type', 'url', 'title', 'dateAdded'
+  ],
+  onItemChanged: [
+    'id', 'property', null, 'value', 'lastModified', 'type', 'parentId'
+  ],
+  onItemMoved: [
+    'id', 'previousParentId', 'previousIndex', 'currentParentId',
+    'currentIndex', 'type'
+  ],
+  onItemRemoved: ['id', 'parentId', 'index', 'type', 'url'],
+  onItemVisited: ['id', 'visitId', 'time', 'transitionType', 'url', 'parentId']
+};
+
+var BOOKMARK_EVENTS = {
+  onItemAdded: 'bookmark-item-added',
+  onItemChanged: 'bookmark-item-changed',
+  onItemMoved: 'bookmark-item-moved',
+  onItemRemoved: 'bookmark-item-removed',
+  onItemVisited: 'bookmark-item-visited',
+};
+
+function createHandler (type, propNames) {
+  propNames = propNames || [];
+  return function (...args) {
+    let data = propNames.reduce((acc, prop, i) => {
+      if (prop)
+        acc[prop] = formatValue(prop, args[i]);
+      return acc;
+    }, {});
+
+    emit(emitter, 'data', {
+      type: type,
+      data: data
+    });
+  };
+}
+
+/*
+ * Creates an observer, creating handlers based off of
+ * the `events` names, and ordering arguments from `propNames` hash
+ */
+function createObserverInstance (events, propNames) {
+  let definition = Object.keys(events).reduce((prototype, eventName) => {
+    prototype[eventName] = createHandler(events[eventName], propNames[eventName]);
+    return prototype;
+  }, {});
+
+  return Class(merge(definition, { extends: Unknown }))();
+}
+
+/*
+ * Formats `data` based off of the value of `type`
+ */
+function formatValue (type, data) {
+  if (type === 'type')
+    return mapBookmarkItemType(data);
+  if (type === 'url' && data)
+    return data.spec;
+  return data;
+}
+
+var historyObserver = createObserverInstance(HISTORY_EVENTS, HISTORY_ARGS);
+historyService.addObserver(historyObserver, false);
+
+var bookmarkObserver = createObserverInstance(BOOKMARK_EVENTS, BOOKMARK_ARGS);
+bookmarkService.addObserver(bookmarkObserver, false);
+
+when(() => {
+  historyService.removeObserver(historyObserver);
+  bookmarkService.removeObserver(bookmarkObserver);
+});
+
+exports.events = emitter;