1 files changed, 0 insertions, 113 deletions
diff --git a/addon-sdk/source/lib/sdk/tabs/observer.js b/addon-sdk/source/lib/sdk/tabs/observer.js
deleted file mode 100644
index 4e935cd62..000000000
--- a/addon-sdk/source/lib/sdk/tabs/observer.js
+++ /dev/null
@@ -1,113 +0,0 @@
-/* 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": "unstable"
-};
-
-const { EventTarget } = require("../event/target");
-const { emit } = require("../event/core");
-const { DOMEventAssembler } = require("../deprecated/events/assembler");
-const { Class } = require("../core/heritage");
-const { getActiveTab, getTabs } = require("./utils");
-const { browserWindowIterator } = require("../deprecated/window-utils");
-const { isBrowser, windows, getMostRecentBrowserWindow } = require("../window/utils");
-const { observer: windowObserver } = require("../windows/observer");
-const { when } = require("../system/unload");
-
-const EVENTS = {
-  "TabOpen": "open",
-  "TabClose": "close",
-  "TabSelect": "select",
-  "TabMove": "move",
-  "TabPinned": "pinned",
-  "TabUnpinned": "unpinned"
-};
-
-const selectedTab = Symbol("observer/state/selectedTab");
-
-// Event emitter objects used to register listeners and emit events on them
-// when they occur.
-const Observer = Class({
-  implements: [EventTarget, DOMEventAssembler],
-  initialize() {
-    this[selectedTab] = null;
-    // Currently Gecko does not dispatch any event on the previously selected
-    // tab before / after "TabSelect" is dispatched. In order to work around this
-    // limitation we keep track of selected tab and emit "deactivate" event with
-    // that before emitting "activate" on selected tab.
-    this.on("select", tab => {
-      const selected = this[selectedTab];
-      if (selected !== tab) {
-        if (selected) {
-          emit(this, 'deactivate', selected);
-        }
-
-        if (tab) {
-          this[selectedTab] = tab;
-          emit(this, 'activate', this[selectedTab]);
-        }
-      }
-    });
-
-
-    // We also observe opening / closing windows in order to add / remove it's
-    // containers to the observed list.
-    windowObserver.on("open", chromeWindow => {
-      if (isBrowser(chromeWindow)) {
-        this.observe(chromeWindow);
-      }
-    });
-
-    windowObserver.on("close", chromeWindow => {
-      if (isBrowser(chromeWindow)) {
-        // Bug 751546: Emit `deactivate` event on window close immediatly
-        // Otherwise we are going to face "dead object" exception on `select` event
-        if (getActiveTab(chromeWindow) === this[selectedTab]) {
-          emit(this, "deactivate", this[selectedTab]);
-          this[selectedTab] = null;
-        }
-        this.ignore(chromeWindow);
-      }
-    });
-
-
-    // Currently gecko does not dispatches "TabSelect" events when different
-    // window gets activated. To work around this limitation we emulate "select"
-    // event for this case.
-    windowObserver.on("activate", chromeWindow => {
-      if (isBrowser(chromeWindow)) {
-        emit(this, "select", getActiveTab(chromeWindow));
-      }
-    });
-
-    // We should synchronize state, since probably we already have at least one
-    // window open.
-    for (let chromeWindow of browserWindowIterator()) {
-      this.observe(chromeWindow);
-    }
-
-    when(_ => {
-      // Don't dispatch a deactivate event during unload.
-      this[selectedTab] = null;
-    });
-  },
-  /**
-   * Events that are supported and emitted by the module.
-   */
-  supportedEventsTypes: Object.keys(EVENTS),
-  /**
-   * Function handles all the supported events on all the windows that are
-   * observed. Method is used to proxy events to the listeners registered on
-   * this event emitter.
-   * @param {Event} event
-   *    Keyboard event being emitted.
-   */
-  handleEvent: function handleEvent(event) {
-    emit(this, EVENTS[event.type], event.target, event);
-  }
-});
-
-exports.observer = new Observer();