1 files changed, 0 insertions, 299 deletions
diff --git a/application/basilisk/components/newtab/NewTabWebChannel.jsm b/application/basilisk/components/newtab/NewTabWebChannel.jsm
deleted file mode 100644
index 068515dbc..000000000
--- a/application/basilisk/components/newtab/NewTabWebChannel.jsm
+++ /dev/null
@@ -1,299 +0,0 @@
-/* global
-   NewTabPrefsProvider,
-   Services,
-   EventEmitter,
-   Preferences,
-   XPCOMUtils,
-   WebChannel,
-   NewTabRemoteResources
-*/
-/* exported NewTabWebChannel */
-
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["NewTabWebChannel"];
-
-const {utils: Cu} = Components;
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/Preferences.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "NewTabPrefsProvider",
-                                  "resource:///modules/NewTabPrefsProvider.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "NewTabRemoteResources",
-                                  "resource:///modules/NewTabRemoteResources.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "WebChannel",
-                                  "resource://gre/modules/WebChannel.jsm");
-XPCOMUtils.defineLazyGetter(this, "EventEmitter", function() {
-  const {EventEmitter} = Cu.import("resource://devtools/shared/event-emitter.js", {});
-  return EventEmitter;
-});
-
-const CHAN_ID = "newtab";
-const PREF_ENABLED = "browser.newtabpage.remote";
-const PREF_MODE = "browser.newtabpage.remote.mode";
-
-/**
- * NewTabWebChannel is the conduit for all communication with unprivileged newtab instances.
- *
- * It allows for the ability to broadcast to all newtab browsers.
- * If the browser.newtab.remote pref is false, the object will be in an uninitialized state.
- *
- * Mode choices:
- * 'production': pages from our production CDN
- * 'staging': pages from our staging CDN
- * 'test': intended for tests
- * 'test2': intended for tests
- * 'dev': intended for development
- *
- *  An unknown mode will result in 'production' mode, which is the default
- *
- *  Incoming messages are expected to be JSON-serialized and in the format:
- *
- *  {
- *    type: "REQUEST_SCREENSHOT",
- *    data: {
- *      url: "https://example.com"
- *    }
- *  }
- *
- *  Or:
- *
- *  {
- *    type: "REQUEST_SCREENSHOT",
- *  }
- *
- *  Outgoing messages are expected to be objects serializable by structured cloning, in a similar format:
- *  {
- *    type: "RECEIVE_SCREENSHOT",
- *    data: {
- *      "url": "https://example.com",
- *      "image": "dataURi:....."
- *    }
- *  }
- */
-let NewTabWebChannelImpl = function NewTabWebChannelImpl() {
-  EventEmitter.decorate(this);
-  this._handlePrefChange = this._handlePrefChange.bind(this);
-  this._incomingMessage = this._incomingMessage.bind(this);
-};
-
-NewTabWebChannelImpl.prototype = {
-  _prefs: {},
-  _channel: null,
-
-  // a WeakMap containing browsers as keys and a weak ref to their principal
-  // as value
-  _principals: null,
-
-  // a Set containing weak refs to browsers
-  _browsers: null,
-
-  /*
-   * Returns current channel's ID
-   */
-  get chanId() {
-    return CHAN_ID;
-  },
-
-  /*
-   * Returns the number of browsers currently tracking
-   */
-  get numBrowsers() {
-    return this._getBrowserRefs().length;
-  },
-
-  /*
-   * Returns current channel's origin
-   */
-  get origin() {
-    if (!(this._prefs.mode in NewTabRemoteResources.MODE_CHANNEL_MAP)) {
-      this._prefs.mode = "production";
-    }
-    return NewTabRemoteResources.MODE_CHANNEL_MAP[this._prefs.mode].origin;
-  },
-
-  /*
-   * Unloads all browsers and principals
-   */
-  _unloadAll() {
-    if (this._principals != null) {
-      this._principals = new WeakMap();
-    }
-    this._browsers = new Set();
-    this.emit("targetUnloadAll");
-  },
-
-  /*
-   * Checks if a browser is known
-   *
-   * This will cause an iteration through all known browsers.
-   * That's ok, we don't expect a lot of browsers
-   */
-  _isBrowserKnown(browser) {
-    for (let bRef of this._getBrowserRefs()) {
-      let b = bRef.get();
-      if (b && b.permanentKey === browser.permanentKey) {
-        return true;
-      }
-    }
-
-    return false;
-  },
-
-  /*
-   * Obtains all known browser refs
-   */
-  _getBrowserRefs() {
-    // Some code may try to emit messages after teardown.
-    if (!this._browsers) {
-      return [];
-    }
-    let refs = [];
-    for (let bRef of this._browsers) {
-      /*
-       * even though we hold a weak ref to browser, it seems that browser
-       * objects aren't gc'd immediately after a tab closes. They stick around
-       * in memory, but thankfully they don't have a documentURI in that case
-       */
-      let browser = bRef.get();
-      if (browser && browser.documentURI) {
-        refs.push(bRef);
-      } else {
-        // need to clean up principals because the browser object is not gc'ed
-        // immediately
-        this._principals.delete(browser);
-        this._browsers.delete(bRef);
-        this.emit("targetUnload");
-      }
-    }
-    return refs;
-  },
-
-  /*
-   * Receives a message from content.
-   *
-   * Keeps track of browsers for broadcast, relays messages to listeners.
-   */
-  _incomingMessage(id, message, target) {
-    if (this.chanId !== id) {
-      Cu.reportError(new Error("NewTabWebChannel unexpected message destination"));
-    }
-
-    /*
-     * need to differentiate by browser, because event targets are created each
-     * time a message is sent.
-     */
-    if (!this._isBrowserKnown(target.browser)) {
-      this._browsers.add(Cu.getWeakReference(target.browser));
-      this._principals.set(target.browser, Cu.getWeakReference(target.principal));
-      this.emit("targetAdd");
-    }
-
-    try {
-      let msg = JSON.parse(message);
-      this.emit(msg.type, {data: msg.data, target});
-    } catch (err) {
-      Cu.reportError(err);
-    }
-  },
-
-  /*
-   * Sends a message to all known browsers
-   */
-  broadcast(actionType, message) {
-    for (let bRef of this._getBrowserRefs()) {
-      let browser = bRef.get();
-      try {
-        let principal = this._principals.get(browser).get();
-        if (principal && browser && browser.documentURI) {
-          this._channel.send({type: actionType, data: message}, {browser, principal});
-        }
-      } catch (e) {
-        Cu.reportError(new Error("NewTabWebChannel WeakRef is dead"));
-        this._principals.delete(browser);
-      }
-    }
-  },
-
-  /*
-   * Sends a message to a specific target
-   */
-  send(actionType, message, target) {
-    try {
-      this._channel.send({type: actionType, data: message}, target);
-    } catch (e) {
-      // Web Channel might be dead
-      Cu.reportError(e);
-    }
-  },
-
-  /*
-   * Pref change observer callback
-   */
-  _handlePrefChange(prefName, newState, forceState) { // eslint-disable-line no-unused-vars
-    switch (prefName) {
-      case PREF_ENABLED:
-        if (!this._prefs.enabled && newState) {
-          // changing state from disabled to enabled
-          this.setupState();
-        } else if (this._prefs.enabled && !newState) {
-          // changing state from enabled to disabled
-          this.tearDownState();
-        }
-        break;
-      case PREF_MODE:
-        if (this._prefs.mode !== newState) {
-          // changing modes
-          this.tearDownState();
-          this.setupState();
-        }
-        break;
-    }
-  },
-
-  /*
-   * Sets up the internal state
-   */
-  setupState() {
-    this._prefs.enabled = Preferences.get(PREF_ENABLED, false);
-
-    let mode = Preferences.get(PREF_MODE, "production");
-    if (!(mode in NewTabRemoteResources.MODE_CHANNEL_MAP)) {
-      mode = "production";
-    }
-    this._prefs.mode = mode;
-    this._principals = new WeakMap();
-    this._browsers = new Set();
-
-    if (this._prefs.enabled) {
-      this._channel = new WebChannel(this.chanId, Services.io.newURI(this.origin));
-      this._channel.listen(this._incomingMessage);
-    }
-  },
-
-  tearDownState() {
-    if (this._channel) {
-      this._channel.stopListening();
-    }
-    this._prefs = {};
-    this._unloadAll();
-    this._channel = null;
-    this._principals = null;
-    this._browsers = null;
-  },
-
-  init() {
-    this.setupState();
-    NewTabPrefsProvider.prefs.on(PREF_ENABLED, this._handlePrefChange);
-    NewTabPrefsProvider.prefs.on(PREF_MODE, this._handlePrefChange);
-  },
-
-  uninit() {
-    this.tearDownState();
-    NewTabPrefsProvider.prefs.off(PREF_ENABLED, this._handlePrefChange);
-    NewTabPrefsProvider.prefs.off(PREF_MODE, this._handlePrefChange);
-  }
-};
-
-let NewTabWebChannel = new NewTabWebChannelImpl();