Move Add-on SDK source to toolkit/jetpack

22 files changed, 0 insertions, 2379 deletions

diff --git a/addon-sdk/source/lib/sdk/ui/button/action.js b/addon-sdk/source/lib/sdk/ui/button/action.js
deleted file mode 100644
index dfb092d0c..000000000
--- a/addon-sdk/source/lib/sdk/ui/button/action.js
+++ /dev/null
@@ -1,114 +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': 'experimental',
-  'engines': {
-    'Firefox': '> 28'
-  }
-};
-
-const { Class } = require('../../core/heritage');
-const { merge } = require('../../util/object');
-const { Disposable } = require('../../core/disposable');
-const { on, off, emit, setListeners } = require('../../event/core');
-const { EventTarget } = require('../../event/target');
-const { getNodeView } = require('../../view/core');
-
-const view = require('./view');
-const { buttonContract, stateContract } = require('./contract');
-const { properties, render, state, register, unregister,
-        getDerivedStateFor } = require('../state');
-const { events: stateEvents } = require('../state/events');
-const { events: viewEvents } = require('./view/events');
-const events = require('../../event/utils');
-
-const { getActiveTab } = require('../../tabs/utils');
-
-const { id: addonID } = require('../../self');
-const { identify } = require('../id');
-
-const buttons = new Map();
-
-const toWidgetId = id =>
-  ('action-button--' + addonID.toLowerCase()+ '-' + id).
-    replace(/[^a-z0-9_-]/g, '');
-
-const ActionButton = Class({
-  extends: EventTarget,
-  implements: [
-    properties(stateContract),
-    state(stateContract),
-    Disposable
-  ],
-  setup: function setup(options) {
-    let state = merge({
-      disabled: false
-    }, buttonContract(options));
-
-    let id = toWidgetId(options.id);
-
-    register(this, state);
-
-    // Setup listeners.
-    setListeners(this, options);
-
-    buttons.set(id, this);
-
-    view.create(merge({}, state, { id: id }));
-  },
-
-  dispose: function dispose() {
-    let id = toWidgetId(this.id);
-    buttons.delete(id);
-
-    off(this);
-
-    view.dispose(id);
-
-    unregister(this);
-  },
-
-  get id() {
-    return this.state().id;
-  },
-
-  click: function click() { view.click(toWidgetId(this.id)) }
-});
-exports.ActionButton = ActionButton;
-
-identify.define(ActionButton, ({id}) => toWidgetId(id));
-
-getNodeView.define(ActionButton, button =>
-  view.nodeFor(toWidgetId(button.id))
-);
-
-var actionButtonStateEvents = events.filter(stateEvents,
-  e => e.target instanceof ActionButton);
-
-var actionButtonViewEvents = events.filter(viewEvents,
-  e => buttons.has(e.target));
-
-var clickEvents = events.filter(actionButtonViewEvents, e => e.type === 'click');
-var updateEvents = events.filter(actionButtonViewEvents, e => e.type === 'update');
-
-on(clickEvents, 'data', ({target: id, window}) => {
-  let button = buttons.get(id);
-  let state = getDerivedStateFor(button, getActiveTab(window));
-
-  emit(button, 'click', state);
-});
-
-on(updateEvents, 'data', ({target: id, window}) => {
-  render(buttons.get(id), window);
-});
-
-on(actionButtonStateEvents, 'data', ({target, window, state}) => {
-  let id = toWidgetId(target.id);
-  view.setIcon(id, window, state.icon);
-  view.setLabel(id, window, state.label);
-  view.setDisabled(id, window, state.disabled);
-  view.setBadge(id, window, state.badge, state.badgeColor);
-});
diff --git a/addon-sdk/source/lib/sdk/ui/button/contract.js b/addon-sdk/source/lib/sdk/ui/button/contract.js
deleted file mode 100644
index ce6e33d95..000000000
--- a/addon-sdk/source/lib/sdk/ui/button/contract.js
+++ /dev/null
@@ -1,73 +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';
-
-const { contract } = require('../../util/contract');
-const { isLocalURL } = require('../../url');
-const { isNil, isObject, isString } = require('../../lang/type');
-const { required, either, string, boolean, object, number } = require('../../deprecated/api-utils');
-const { merge } = require('../../util/object');
-const { freeze } = Object;
-
-const isIconSet = (icons) =>
-  Object.keys(icons).
-    every(size => String(size >>> 0) === size && isLocalURL(icons[size]));
-
-var iconSet = {
-  is: either(object, string),
-  map: v => isObject(v) ? freeze(merge({}, v)) : v,
-  ok: v => (isString(v) && isLocalURL(v)) || (isObject(v) && isIconSet(v)),
-  msg: 'The option "icon" must be a local URL or an object with ' +
-    'numeric keys / local URL values pair.'
-}
-
-var id = {
-  is: string,
-  ok: v => /^[a-z-_][a-z0-9-_]*$/i.test(v),
-  msg: 'The option "id" must be a valid alphanumeric id (hyphens and ' +
-        'underscores are allowed).'
-};
-
-var label = {
-  is: string,
-  ok: v => isNil(v) || v.trim().length > 0,
-  msg: 'The option "label" must be a non empty string'
-}
-
-var badge = {
-  is: either(string, number),
-  msg: 'The option "badge" must be a string or a number'
-}
-
-var badgeColor = {
-  is: string,
-  msg: 'The option "badgeColor" must be a string'
-}
-
-var stateContract = contract({
-  label: label,
-  icon: iconSet,
-  disabled: boolean,
-  badge: badge,
-  badgeColor: badgeColor
-});
-
-exports.stateContract = stateContract;
-
-var buttonContract = contract(merge({}, stateContract.rules, {
-  id: required(id),
-  label: required(label),
-  icon: required(iconSet)
-}));
-
-exports.buttonContract = buttonContract;
-
-exports.toggleStateContract = contract(merge({
-  checked: boolean
-}, stateContract.rules));
-
-exports.toggleButtonContract = contract(merge({
-  checked: boolean
-}, buttonContract.rules));
-
diff --git a/addon-sdk/source/lib/sdk/ui/button/toggle.js b/addon-sdk/source/lib/sdk/ui/button/toggle.js
deleted file mode 100644
index a226b3212..000000000
--- a/addon-sdk/source/lib/sdk/ui/button/toggle.js
+++ /dev/null
@@ -1,127 +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': 'experimental',
-  'engines': {
-    'Firefox': '> 28'
-  }
-};
-
-const { Class } = require('../../core/heritage');
-const { merge } = require('../../util/object');
-const { Disposable } = require('../../core/disposable');
-const { on, off, emit, setListeners } = require('../../event/core');
-const { EventTarget } = require('../../event/target');
-const { getNodeView } = require('../../view/core');
-
-const view = require('./view');
-const { toggleButtonContract, toggleStateContract } = require('./contract');
-const { properties, render, state, register, unregister,
-  setStateFor, getStateFor, getDerivedStateFor } = require('../state');
-const { events: stateEvents } = require('../state/events');
-const { events: viewEvents } = require('./view/events');
-const events = require('../../event/utils');
-
-const { getActiveTab } = require('../../tabs/utils');
-
-const { id: addonID } = require('../../self');
-const { identify } = require('../id');
-
-const buttons = new Map();
-
-const toWidgetId = id =>
-  ('toggle-button--' + addonID.toLowerCase()+ '-' + id).
-    replace(/[^a-z0-9_-]/g, '');
-
-const ToggleButton = Class({
-  extends: EventTarget,
-  implements: [
-    properties(toggleStateContract),
-    state(toggleStateContract),
-    Disposable
-  ],
-  setup: function setup(options) {
-    let state = merge({
-      disabled: false,
-      checked: false
-    }, toggleButtonContract(options));
-
-    let id = toWidgetId(options.id);
-
-    register(this, state);
-
-    // Setup listeners.
-    setListeners(this, options);
-
-    buttons.set(id, this);
-
-    view.create(merge({ type: 'checkbox' }, state, { id: id }));
-  },
-
-  dispose: function dispose() {
-    let id = toWidgetId(this.id);
-    buttons.delete(id);
-
-    off(this);
-
-    view.dispose(id);
-
-    unregister(this);
-  },
-
-  get id() {
-    return this.state().id;
-  },
-
-  click: function click() {
-    return view.click(toWidgetId(this.id));
-  }
-});
-exports.ToggleButton = ToggleButton;
-
-identify.define(ToggleButton, ({id}) => toWidgetId(id));
-
-getNodeView.define(ToggleButton, button =>
-  view.nodeFor(toWidgetId(button.id))
-);
-
-var toggleButtonStateEvents = events.filter(stateEvents,
-  e => e.target instanceof ToggleButton);
-
-var toggleButtonViewEvents = events.filter(viewEvents,
-  e => buttons.has(e.target));
-
-var clickEvents = events.filter(toggleButtonViewEvents, e => e.type === 'click');
-var updateEvents = events.filter(toggleButtonViewEvents, e => e.type === 'update');
-
-on(toggleButtonStateEvents, 'data', ({target, window, state}) => {
-  let id = toWidgetId(target.id);
-
-  view.setIcon(id, window, state.icon);
-  view.setLabel(id, window, state.label);
-  view.setDisabled(id, window, state.disabled);
-  view.setChecked(id, window, state.checked);
-  view.setBadge(id, window, state.badge, state.badgeColor);
-});
-
-on(clickEvents, 'data', ({target: id, window, checked }) => {
-  let button = buttons.get(id);
-  let windowState = getStateFor(button, window);
-
-  let newWindowState = merge({}, windowState, { checked: checked });
-
-  setStateFor(button, window, newWindowState);
-
-  let state = getDerivedStateFor(button, getActiveTab(window));
-
-  emit(button, 'click', state);
-
-  emit(button, 'change', state);
-});
-
-on(updateEvents, 'data', ({target: id, window}) => {
-  render(buttons.get(id), window);
-});
diff --git a/addon-sdk/source/lib/sdk/ui/button/view.js b/addon-sdk/source/lib/sdk/ui/button/view.js
deleted file mode 100644
index 63b7aea31..000000000
--- a/addon-sdk/source/lib/sdk/ui/button/view.js
+++ /dev/null
@@ -1,243 +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': 'experimental',
-  'engines': {
-    'Firefox': '> 28'
-  }
-};
-
-const { Cu } = require('chrome');
-const { on, off, emit } = require('../../event/core');
-
-const { data } = require('sdk/self');
-
-const { isObject, isNil } = require('../../lang/type');
-
-const { getMostRecentBrowserWindow } = require('../../window/utils');
-const { ignoreWindow } = require('../../private-browsing/utils');
-const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
-const { AREA_PANEL, AREA_NAVBAR } = CustomizableUI;
-
-const { events: viewEvents } = require('./view/events');
-
-const XUL_NS = 'http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul';
-
-const views = new Map();
-const customizedWindows = new WeakMap();
-
-const buttonListener = {
-  onCustomizeStart: window => {
-    for (let [id, view] of views) {
-      setIcon(id, window, view.icon);
-      setLabel(id, window, view.label);
-    }
-
-    customizedWindows.set(window, true);
-  },
-  onCustomizeEnd: window => {
-    customizedWindows.delete(window);
-
-    for (let [id, ] of views) {
-      let placement = CustomizableUI.getPlacementOfWidget(id);
-
-      if (placement)
-        emit(viewEvents, 'data', { type: 'update', target: id, window: window });
-    }
-  },
-  onWidgetAfterDOMChange: (node, nextNode, container) => {
-    let { id } = node;
-    let view = views.get(id);
-    let window = node.ownerDocument.defaultView;
-
-    if (view) {
-      emit(viewEvents, 'data', { type: 'update', target: id, window: window });
-    }
-  }
-};
-
-CustomizableUI.addListener(buttonListener);
-
-require('../../system/unload').when( _ =>
-  CustomizableUI.removeListener(buttonListener)
-);
-
-function getNode(id, window) {
-  return !views.has(id) || ignoreWindow(window)
-    ? null
-    : CustomizableUI.getWidget(id).forWindow(window).node
-};
-
-function isInToolbar(id) {
-  let placement = CustomizableUI.getPlacementOfWidget(id);
-
-  return placement && CustomizableUI.getAreaType(placement.area) === 'toolbar';
-}
-
-
-function getImage(icon, isInToolbar, pixelRatio) {
-  let targetSize = (isInToolbar ? 18 : 32) * pixelRatio;
-  let bestSize = 0;
-  let image = icon;
-
-  if (isObject(icon)) {
-    for (let size of Object.keys(icon)) {
-      size = +size;
-      let offset = targetSize - size;
-
-      if (offset === 0) {
-        bestSize = size;
-        break;
-      }
-
-      let delta = Math.abs(offset) - Math.abs(targetSize - bestSize);
-
-      if (delta < 0)
-        bestSize = size;
-    }
-
-    image = icon[bestSize];
-  }
-
-  if (image.indexOf('./') === 0)
-    return data.url(image.substr(2));
-
-  return image;
-}
-
-function nodeFor(id, window=getMostRecentBrowserWindow()) {
-  return customizedWindows.has(window) ? null : getNode(id, window);
-};
-exports.nodeFor = nodeFor;
-
-function create(options) {
-  let { id, label, icon, type, badge } = options;
-
-  if (views.has(id))
-    throw new Error('The ID "' + id + '" seems already used.');
-
-  CustomizableUI.createWidget({
-    id: id,
-    type: 'custom',
-    removable: true,
-    defaultArea: AREA_NAVBAR,
-    allowedAreas: [ AREA_PANEL, AREA_NAVBAR ],
-
-    onBuild: function(document) {
-      let window = document.defaultView;
-
-      let node = document.createElementNS(XUL_NS, 'toolbarbutton');
-
-      let image = getImage(icon, true, window.devicePixelRatio);
-
-      if (ignoreWindow(window))
-        node.style.display = 'none';
-
-      node.setAttribute('id', this.id);
-      node.setAttribute('class', 'toolbarbutton-1 chromeclass-toolbar-additional badged-button');
-      node.setAttribute('type', type);
-      node.setAttribute('label', label);
-      node.setAttribute('tooltiptext', label);
-      node.setAttribute('image', image);
-      node.setAttribute('constrain-size', 'true');
-
-      views.set(id, {
-        area: this.currentArea,
-        icon: icon,
-        label: label
-      });
-
-      node.addEventListener('command', function(event) {
-        if (views.has(id)) {
-          emit(viewEvents, 'data', {
-            type: 'click',
-            target: id,
-            window: event.view,
-            checked: node.checked
-          });
-        }
-      });
-
-      return node;
-    }
-  });
-};
-exports.create = create;
-
-function dispose(id) {
-  if (!views.has(id)) return;
-
-  views.delete(id);
-  CustomizableUI.destroyWidget(id);
-}
-exports.dispose = dispose;
-
-function setIcon(id, window, icon) {
-  let node = getNode(id, window);
-
-  if (node) {
-    icon = customizedWindows.has(window) ? views.get(id).icon : icon;
-    let image = getImage(icon, isInToolbar(id), window.devicePixelRatio);
-
-    node.setAttribute('image', image);
-  }
-}
-exports.setIcon = setIcon;
-
-function setLabel(id, window, label) {
-  let node = nodeFor(id, window);
-
-  if (node) {
-    node.setAttribute('label', label);
-    node.setAttribute('tooltiptext', label);
-  }
-}
-exports.setLabel = setLabel;
-
-function setDisabled(id, window, disabled) {
-  let node = nodeFor(id, window);
-
-  if (node)
-    node.disabled = disabled;
-}
-exports.setDisabled = setDisabled;
-
-function setChecked(id, window, checked) {
-  let node = nodeFor(id, window);
-
-  if (node)
-    node.checked = checked;
-}
-exports.setChecked = setChecked;
-
-function setBadge(id, window, badge, color) {
-  let node = nodeFor(id, window);
-
-  if (node) {
-    // `Array.from` is needed to handle unicode symbol properly:
-    // '𝐀𝐁'.length is 4 where Array.from('𝐀𝐁').length is 2
-    let text = isNil(badge)
-                  ? ''
-                  : Array.from(String(badge)).slice(0, 4).join('');
-
-    node.setAttribute('badge', text);
-
-    let badgeNode = node.ownerDocument.getAnonymousElementByAttribute(node,
-                                        'class', 'toolbarbutton-badge');
-
-    if (badgeNode)
-      badgeNode.style.backgroundColor = isNil(color) ? '' : color;
-  }
-}
-exports.setBadge = setBadge;
-
-function click(id) {
-  let node = nodeFor(id);
-
-  if (node)
-    node.click();
-}
-exports.click = click;
diff --git a/addon-sdk/source/lib/sdk/ui/button/view/events.js b/addon-sdk/source/lib/sdk/ui/button/view/events.js
deleted file mode 100644
index 98909656a..000000000
--- a/addon-sdk/source/lib/sdk/ui/button/view/events.js
+++ /dev/null
@@ -1,18 +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': 'experimental',
-  'engines': {
-    'Firefox': '*',
-    'SeaMonkey': '*',
-    'Thunderbird': '*'
-  }
-};
-
-var channel = {};
-
-exports.events = channel;
diff --git a/addon-sdk/source/lib/sdk/ui/component.js b/addon-sdk/source/lib/sdk/ui/component.js
deleted file mode 100644
index d1f12c95e..000000000
--- a/addon-sdk/source/lib/sdk/ui/component.js
+++ /dev/null
@@ -1,182 +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";
-
-// Internal properties not exposed to the public.
-const cache = Symbol("component/cache");
-const writer = Symbol("component/writer");
-const isFirstWrite = Symbol("component/writer/first-write?");
-const currentState = Symbol("component/state/current");
-const pendingState = Symbol("component/state/pending");
-const isWriting = Symbol("component/writing?");
-
-const isntNull = x => x !== null;
-
-const Component = function(options, children) {
-  this[currentState] = null;
-  this[pendingState] = null;
-  this[writer] = null;
-  this[cache] = null;
-  this[isFirstWrite] = true;
-
-  this[Component.construct](options, children);
-}
-Component.Component = Component;
-// Constructs component.
-Component.construct = Symbol("component/construct");
-// Called with `options` and `children` and must return
-// initial state back.
-Component.initial = Symbol("component/initial");
-
-// Function patches current `state` with a given update.
-Component.patch = Symbol("component/patch");
-// Function that replaces current `state` with a passed state.
-Component.reset = Symbol("component/reset");
-
-// Function that must return render tree from passed state.
-Component.render = Symbol("component/render");
-
-// Path of the component with in the mount point.
-Component.path = Symbol("component/path");
-
-Component.isMounted = component => !!component[writer];
-Component.isWriting = component => !!component[isWriting];
-
-// Internal method that mounts component to a writer.
-// Mounts component to a writer.
-Component.mount = (component, write) => {
-  if (Component.isMounted(component)) {
-    throw Error("Can not mount already mounted component");
-  }
-
-  component[writer] = write;
-  Component.write(component);
-
-  if (component[Component.mounted]) {
-    component[Component.mounted]();
-  }
-}
-
-// Unmounts component from a writer.
-Component.unmount = (component) => {
-  if (Component.isMounted(component)) {
-    component[writer] = null;
-    if (component[Component.unmounted]) {
-      component[Component.unmounted]();
-    }
-  } else {
-    console.warn("Unmounting component that is not mounted is redundant");
-  }
-};
- // Method invoked once after inital write occurs.
-Component.mounted = Symbol("component/mounted");
-// Internal method that unmounts component from the writer.
-Component.unmounted = Symbol("component/unmounted");
-// Function that must return true if component is changed
-Component.isUpdated = Symbol("component/updated?");
-Component.update = Symbol("component/update");
-Component.updated = Symbol("component/updated");
-
-const writeChild = base => (child, index) => Component.write(child, base, index)
-Component.write = (component, base, index) => {
-  if (component === null) {
-    return component;
-  }
-
-  if (!(component instanceof Component)) {
-    const path = base ? `${base}${component.key || index}/` : `/`;
-    return Object.assign({}, component, {
-      [Component.path]: path,
-      children: component.children && component.children.
-                                        map(writeChild(path)).
-                                        filter(isntNull)
-    });
-  }
-
-  component[isWriting] = true;
-
-  try {
-
-    const current = component[currentState];
-    const pending = component[pendingState] || current;
-    const isUpdated = component[Component.isUpdated];
-    const isInitial = component[isFirstWrite];
-
-    if (isUpdated(current, pending) || isInitial) {
-      if (!isInitial && component[Component.update]) {
-        component[Component.update](pending, current)
-      }
-
-      // Note: [Component.update] could have caused more updates so can't use
-      // `pending` as `component[pendingState]` may have changed.
-      component[currentState] = component[pendingState] || current;
-      component[pendingState] = null;
-
-      const tree = component[Component.render](component[currentState]);
-      component[cache] = Component.write(tree, base, index);
-      if (component[writer]) {
-        component[writer].call(null, component[cache]);
-      }
-
-      if (!isInitial && component[Component.updated]) {
-        component[Component.updated](current, pending);
-      }
-    }
-
-    component[isFirstWrite] = false;
-
-    return component[cache];
-  } finally {
-    component[isWriting] = false;
-  }
-};
-
-Component.prototype = Object.freeze({
-  constructor: Component,
-
-  [Component.mounted]: null,
-  [Component.unmounted]: null,
-  [Component.update]: null,
-  [Component.updated]: null,
-
-  get state() {
-    return this[pendingState] || this[currentState];
-  },
-
-
-  [Component.construct](settings, items) {
-    const initial = this[Component.initial];
-    const base = initial(settings, items);
-    const options = Object.assign(Object.create(null), base.options, settings);
-    const children = base.children || items || null;
-    const state = Object.assign(Object.create(null), base, {options, children});
-    this[currentState] = state;
-
-    if (this.setup) {
-      this.setup(state);
-    }
-  },
-  [Component.initial](options, children) {
-    return Object.create(null);
-  },
-  [Component.patch](update) {
-    this[Component.reset](Object.assign({}, this.state, update));
-  },
-  [Component.reset](state) {
-    this[pendingState] = state;
-    if (Component.isMounted(this) && !Component.isWriting(this)) {
-      Component.write(this);
-    }
-  },
-
-  [Component.isUpdated](before, after) {
-    return before != after
-  },
-
-  [Component.render](state) {
-    throw Error("Component must implement [Component.render] member");
-  }
-});
-
-module.exports = Component;
diff --git a/addon-sdk/source/lib/sdk/ui/frame.js b/addon-sdk/source/lib/sdk/ui/frame.js
deleted file mode 100644
index 566353cdf..000000000
--- a/addon-sdk/source/lib/sdk/ui/frame.js
+++ /dev/null
@@ -1,16 +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": "experimental",
-  "engines": {
-    "Firefox": "> 28"
-  }
-};
-
-require("./frame/view");
-const { Frame } = require("./frame/model");
-
-exports.Frame = Frame;
diff --git a/addon-sdk/source/lib/sdk/ui/frame/model.js b/addon-sdk/source/lib/sdk/ui/frame/model.js
deleted file mode 100644
index 627310874..000000000
--- a/addon-sdk/source/lib/sdk/ui/frame/model.js
+++ /dev/null
@@ -1,154 +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": "experimental",
-  "engines": {
-    "Firefox": "> 28"
-  }
-};
-
-const { Class } = require("../../core/heritage");
-const { EventTarget } = require("../../event/target");
-const { emit, off, setListeners } = require("../../event/core");
-const { Reactor, foldp, send, merges } = require("../../event/utils");
-const { Disposable } = require("../../core/disposable");
-const { OutputPort } = require("../../output/system");
-const { InputPort } = require("../../input/system");
-const { identify } = require("../id");
-const { pairs, object, map, each } = require("../../util/sequence");
-const { patch, diff } = require("diffpatcher/index");
-const { isLocalURL } = require("../../url");
-const { compose } = require("../../lang/functional");
-const { contract } = require("../../util/contract");
-const { id: addonID, data: { url: resolve }} = require("../../self");
-const { Frames } = require("../../input/frame");
-
-
-const output = new OutputPort({ id: "frame-change" });
-const mailbox = new OutputPort({ id: "frame-mailbox" });
-const input = Frames;
-
-
-const makeID = url =>
-  ("frame-" + addonID + "-" + url).
-    split("/").join("-").
-    split(".").join("-").
-    replace(/[^A-Za-z0-9_\-]/g, "");
-
-const validate = contract({
-  name: {
-    is: ["string", "undefined"],
-    ok: x => /^[a-z][a-z0-9-_]+$/i.test(x),
-    msg: "The `option.name` must be a valid alphanumeric string (hyphens and " +
-         "underscores are allowed) starting with letter."
-  },
-  url: {
-    map: x => x.toString(),
-    is: ["string"],
-    ok: x => isLocalURL(x),
-    msg: "The `options.url` must be a valid local URI."
-  }
-});
-
-const Source = function({id, ownerID}) {
-  this.id = id;
-  this.ownerID = ownerID;
-};
-Source.postMessage = ({id, ownerID}, data, origin) => {
-  send(mailbox, object([id, {
-    inbox: {
-      target: {id: id, ownerID: ownerID},
-      timeStamp: Date.now(),
-      data: data,
-      origin: origin
-    }
-  }]));
-};
-Source.prototype.postMessage = function(data, origin) {
-  Source.postMessage(this, data, origin);
-};
-
-const Message = function({type, data, source, origin, timeStamp}) {
-  this.type = type;
-  this.data = data;
-  this.origin = origin;
-  this.timeStamp = timeStamp;
-  this.source = new Source(source);
-};
-
-
-const frames = new Map();
-const sources = new Map();
-
-const Frame = Class({
-  extends: EventTarget,
-  implements: [Disposable, Source],
-  initialize: function(params={}) {
-    const options = validate(params);
-    const id = makeID(options.name || options.url);
-
-    if (frames.has(id))
-      throw Error("Frame with this id already exists: " + id);
-
-    const initial = { id: id, url: resolve(options.url) };
-    this.id = id;
-
-    setListeners(this, params);
-
-    frames.set(this.id, this);
-
-    send(output, object([id, initial]));
-  },
-  get url() {
-    const state = reactor.value[this.id];
-    return state && state.url;
-  },
-  destroy: function() {
-    send(output, object([this.id, null]));
-    frames.delete(this.id);
-    off(this);
-  },
-  // `JSON.stringify` serializes objects based of the return
-  // value of this method. For convinienc we provide this method
-  // to serialize actual state data.
-  toJSON: function() {
-    return { id: this.id, url: this.url };
-  }
-});
-identify.define(Frame, frame => frame.id);
-
-exports.Frame = Frame;
-
-const reactor = new Reactor({
-  onStep: (present, past) => {
-    const delta = diff(past, present);
-
-    each(([id, update]) => {
-      const frame = frames.get(id);
-      if (update) {
-        if (!past[id])
-          emit(frame, "register");
-
-        if (update.outbox)
-          emit(frame, "message", new Message(present[id].outbox));
-
-        each(([ownerID, state]) => {
-          const readyState = state ? state.readyState : "detach";
-          const type = readyState === "loading" ? "attach" :
-                       readyState === "interactive" ? "ready" :
-                       readyState === "complete" ? "load" :
-                       readyState;
-
-          // TODO: Cache `Source` instances somewhere to preserve
-          // identity.
-          emit(frame, type, {type: type,
-                             source: new Source({id: id, ownerID: ownerID})});
-        }, pairs(update.owners));
-      }
-    }, pairs(delta));
-  }
-});
-reactor.run(input);
diff --git a/addon-sdk/source/lib/sdk/ui/frame/view.html b/addon-sdk/source/lib/sdk/ui/frame/view.html
deleted file mode 100644
index 2a405b583..000000000
--- a/addon-sdk/source/lib/sdk/ui/frame/view.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <script>
-      // HACK: This is not an ideal way to deliver chrome messages
-      // to an inner frame content but seems only way that would
-      // make `event.source` this (outer frame) window.
-      window.onmessage = function(event) {
-        var frame = document.querySelector("iframe");
-        var content = frame.contentWindow;
-        // If message is posted from chrome it has no `event.source`.
-        if (event.source === null)
-          content.postMessage(event.data, "*");
-      };
-    </script>
-  </head>
-  <body style="overflow: hidden"></body>
-</html>
diff --git a/addon-sdk/source/lib/sdk/ui/frame/view.js b/addon-sdk/source/lib/sdk/ui/frame/view.js
deleted file mode 100644
index 2eb4df2b7..000000000
--- a/addon-sdk/source/lib/sdk/ui/frame/view.js
+++ /dev/null
@@ -1,150 +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": "experimental",
-  "engines": {
-    "Firefox": "> 28"
-  }
-};
-
-const { Cu, Ci } = require("chrome");
-const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
-const { subscribe, send, Reactor, foldp, lift, merges, keepIf } = require("../../event/utils");
-const { InputPort } = require("../../input/system");
-const { OutputPort } = require("../../output/system");
-const { LastClosed } = require("../../input/browser");
-const { pairs, keys, object, each } = require("../../util/sequence");
-const { curry, compose } = require("../../lang/functional");
-const { getFrameElement, getOuterId,
-        getByOuterId, getOwnerBrowserWindow } = require("../../window/utils");
-const { patch, diff } = require("diffpatcher/index");
-const { encode } = require("../../base64");
-const { Frames } = require("../../input/frame");
-
-const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
-const HTML_NS = "http://www.w3.org/1999/xhtml";
-const OUTER_FRAME_URI = module.uri.replace(/\.js$/, ".html");
-
-const mailbox = new OutputPort({ id: "frame-mailbox" });
-
-const frameID = frame => frame.id.replace("outer-", "");
-const windowID = compose(getOuterId, getOwnerBrowserWindow);
-
-const getOuterFrame = (windowID, frameID) =>
-    getByOuterId(windowID).document.getElementById("outer-" + frameID);
-
-const listener = ({target, source, data, origin, timeStamp}) => {
-  // And sent received message to outbox so that frame API model
-  // will deal with it.
-  if (source && source !== target) {
-    const frame = getFrameElement(target);
-    const id = frameID(frame);
-    send(mailbox, object([id, {
-      outbox: {type: "message",
-               source: {id: id, ownerID: windowID(frame)},
-               data: data,
-               origin: origin,
-               timeStamp: timeStamp}}]));
-  }
-};
-
-// Utility function used to create frame with a given `state` and
-// inject it into given `window`.
-const registerFrame = ({id, url}) => {
-  CustomizableUI.createWidget({
-    id: id,
-    type: "custom",
-    removable: true,
-    onBuild: document => {
-      let view = document.createElementNS(XUL_NS, "toolbaritem");
-      view.setAttribute("id", id);
-      view.setAttribute("flex", 2);
-
-      let outerFrame = document.createElementNS(XUL_NS, "iframe");
-      outerFrame.setAttribute("src", OUTER_FRAME_URI);
-      outerFrame.setAttribute("id", "outer-" + id);
-      outerFrame.setAttribute("data-is-sdk-outer-frame", true);
-      outerFrame.setAttribute("type", "content");
-      outerFrame.setAttribute("transparent", true);
-      outerFrame.setAttribute("flex", 2);
-      outerFrame.setAttribute("style", "overflow: hidden;");
-      outerFrame.setAttribute("scrolling", "no");
-      outerFrame.setAttribute("disablehistory", true);
-      outerFrame.setAttribute("seamless", "seamless");
-      outerFrame.addEventListener("load", function onload() {
-        outerFrame.removeEventListener("load", onload, true);
-
-        let doc = outerFrame.contentDocument;
-
-        let innerFrame = doc.createElementNS(HTML_NS, "iframe");
-        innerFrame.setAttribute("id", id);
-        innerFrame.setAttribute("src", url);
-        innerFrame.setAttribute("seamless", "seamless");
-        innerFrame.setAttribute("sandbox", "allow-scripts");
-        innerFrame.setAttribute("scrolling", "no");
-        innerFrame.setAttribute("data-is-sdk-inner-frame", true);
-        innerFrame.setAttribute("style", [ "border:none",
-          "position:absolute", "width:100%", "top: 0",
-          "left: 0", "overflow: hidden"].join(";"));
-
-        doc.body.appendChild(innerFrame);
-      }, true);
-
-      view.appendChild(outerFrame);
-
-      return view;
-    }
-  });
-};
-
-const unregisterFrame = CustomizableUI.destroyWidget;
-
-const deliverMessage = curry((frameID, data, windowID) => {
-  const frame = getOuterFrame(windowID, frameID);
-  const content = frame && frame.contentWindow;
-
-  if (content)
-    content.postMessage(data, content.location.origin);
-});
-
-const updateFrame = (id, {inbox, owners}, present) => {
-  if (inbox) {
-    const { data, target:{ownerID}, source } = present[id].inbox;
-    if (ownerID)
-      deliverMessage(id, data, ownerID);
-    else
-      each(deliverMessage(id, data), keys(present[id].owners));
-  }
-
-  each(setupView(id), pairs(owners));
-};
-
-const setupView = curry((frameID, [windowID, state]) => {
-  if (state && state.readyState === "loading") {
-    const frame = getOuterFrame(windowID, frameID);
-    // Setup a message listener on contentWindow.
-    frame.contentWindow.addEventListener("message", listener);
-  }
-});
-
-
-const reactor = new Reactor({
-  onStep: (present, past) => {
-    const delta = diff(past, present);
-
-    // Apply frame changes
-    each(([id, update]) => {
-      if (update === null)
-        unregisterFrame(id);
-      else if (past[id])
-        updateFrame(id, update, present);
-      else
-        registerFrame(update);
-    }, pairs(delta));
-  },
-  onEnd: state => each(unregisterFrame, keys(state))
-});
-reactor.run(Frames);
diff --git a/addon-sdk/source/lib/sdk/ui/id.js b/addon-sdk/source/lib/sdk/ui/id.js
deleted file mode 100644
index d17eb0a4e..000000000
--- a/addon-sdk/source/lib/sdk/ui/id.js
+++ /dev/null
@@ -1,27 +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': 'experimental'
-};
-
-const method = require('../../method/core');
-const { uuid } = require('../util/uuid');
-
-// NOTE: use lang/functional memoize when it is updated to use WeakMap
-function memoize(f) {
-  const memo = new WeakMap();
-
-  return function memoizer(o) {
-    let key = o;
-    if (!memo.has(key))
-      memo.set(key, f.apply(this, arguments));
-    return memo.get(key);
-  };
-}
-
-var identify = method('identify');
-identify.define(Object, memoize(function() { return uuid(); }));
-exports.identify = identify;
diff --git a/addon-sdk/source/lib/sdk/ui/sidebar.js b/addon-sdk/source/lib/sdk/ui/sidebar.js
deleted file mode 100644
index 59e35ea11..000000000
--- a/addon-sdk/source/lib/sdk/ui/sidebar.js
+++ /dev/null
@@ -1,311 +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': 'experimental',
-  'engines': {
-    'Firefox': '*'
-  }
-};
-
-const { Class } = require('../core/heritage');
-const { merge } = require('../util/object');
-const { Disposable } = require('../core/disposable');
-const { off, emit, setListeners } = require('../event/core');
-const { EventTarget } = require('../event/target');
-const { URL } = require('../url');
-const { add, remove, has, clear, iterator } = require('../lang/weak-set');
-const { id: addonID, data } = require('../self');
-const { WindowTracker } = require('../deprecated/window-utils');
-const { isShowing } = require('./sidebar/utils');
-const { isBrowser, getMostRecentBrowserWindow, windows, isWindowPrivate } = require('../window/utils');
-const { ns } = require('../core/namespace');
-const { remove: removeFromArray } = require('../util/array');
-const { show, hide, toggle } = require('./sidebar/actions');
-const { Worker } = require('../deprecated/sync-worker');
-const { contract: sidebarContract } = require('./sidebar/contract');
-const { create, dispose, updateTitle, updateURL, isSidebarShowing, showSidebar, hideSidebar } = require('./sidebar/view');
-const { defer } = require('../core/promise');
-const { models, views, viewsFor, modelFor } = require('./sidebar/namespace');
-const { isLocalURL } = require('../url');
-const { ensure } = require('../system/unload');
-const { identify } = require('./id');
-const { uuid } = require('../util/uuid');
-const { viewFor } = require('../view/core');
-
-const resolveURL = (url) => url ? data.url(url) : url;
-
-const sidebarNS = ns();
-
-const WEB_PANEL_BROWSER_ID = 'web-panels-browser';
-
-var sidebars = {};
-
-const Sidebar = Class({
-  implements: [ Disposable ],
-  extends: EventTarget,
-  setup: function(options) {
-    // inital validation for the model information
-    let model = sidebarContract(options);
-
-    // save the model information
-    models.set(this, model);
-
-    // generate an id if one was not provided
-    model.id = model.id || addonID + '-' + uuid();
-
-    // further validation for the title and url
-    validateTitleAndURLCombo({}, this.title, this.url);
-
-    const self = this;
-    const internals = sidebarNS(self);
-    const windowNS = internals.windowNS = ns();
-
-    // see bug https://bugzilla.mozilla.org/show_bug.cgi?id=886148
-    ensure(this, 'destroy');
-
-    setListeners(this, options);
-
-    let bars = [];
-    internals.tracker = WindowTracker({
-      onTrack: function(window) {
-        if (!isBrowser(window))
-          return;
-
-        let sidebar = window.document.getElementById('sidebar');
-        let sidebarBox = window.document.getElementById('sidebar-box');
-
-        let bar = create(window, {
-          id: self.id,
-          title: self.title,
-          sidebarurl: self.url
-        });
-        bars.push(bar);
-        windowNS(window).bar = bar;
-
-        bar.addEventListener('command', function() {
-          if (isSidebarShowing(window, self)) {
-            hideSidebar(window, self).catch(() => {});
-            return;
-          }
-
-          showSidebar(window, self);
-        }, false);
-
-        function onSidebarLoad() {
-          // check if the sidebar is ready
-          let isReady = sidebar.docShell && sidebar.contentDocument;
-          if (!isReady)
-            return;
-
-          // check if it is a web panel
-          let panelBrowser = sidebar.contentDocument.getElementById(WEB_PANEL_BROWSER_ID);
-          if (!panelBrowser) {
-            bar.removeAttribute('checked');
-            return;
-          }
-
-          let sbTitle = window.document.getElementById('sidebar-title');
-          function onWebPanelSidebarCreated() {
-            if (panelBrowser.contentWindow.location != resolveURL(model.url) ||
-                sbTitle.value != model.title) {
-              return;
-            }
-
-            let worker = windowNS(window).worker = Worker({
-              window: panelBrowser.contentWindow,
-              injectInDocument: true
-            });
-
-            function onWebPanelSidebarUnload() {
-              windowNS(window).onWebPanelSidebarUnload = null;
-
-              // uncheck the associated menuitem
-              bar.setAttribute('checked', 'false');
-
-              emit(self, 'hide', {});
-              emit(self, 'detach', worker);
-              windowNS(window).worker = null;
-            }
-            windowNS(window).onWebPanelSidebarUnload = onWebPanelSidebarUnload;
-            panelBrowser.contentWindow.addEventListener('unload', onWebPanelSidebarUnload, true);
-
-            // check the associated menuitem
-            bar.setAttribute('checked', 'true');
-
-            function onWebPanelSidebarReady() {
-              panelBrowser.contentWindow.removeEventListener('DOMContentLoaded', onWebPanelSidebarReady, false);
-              windowNS(window).onWebPanelSidebarReady = null;
-
-              emit(self, 'ready', worker);
-            }
-            windowNS(window).onWebPanelSidebarReady = onWebPanelSidebarReady;
-            panelBrowser.contentWindow.addEventListener('DOMContentLoaded', onWebPanelSidebarReady, false);
-
-            function onWebPanelSidebarLoad() {
-              panelBrowser.contentWindow.removeEventListener('load', onWebPanelSidebarLoad, true);
-              windowNS(window).onWebPanelSidebarLoad = null;
-
-              // TODO: decide if returning worker is acceptable..
-              //emit(self, 'show', { worker: worker });
-              emit(self, 'show', {});
-            }
-            windowNS(window).onWebPanelSidebarLoad = onWebPanelSidebarLoad;
-            panelBrowser.contentWindow.addEventListener('load', onWebPanelSidebarLoad, true);
-
-            emit(self, 'attach', worker);
-          }
-          windowNS(window).onWebPanelSidebarCreated = onWebPanelSidebarCreated;
-          panelBrowser.addEventListener('DOMWindowCreated', onWebPanelSidebarCreated, true);
-        }
-        windowNS(window).onSidebarLoad = onSidebarLoad;
-        sidebar.addEventListener('load', onSidebarLoad, true); // removed properly
-      },
-      onUntrack: function(window) {
-        if (!isBrowser(window))
-          return;
-
-        // hide the sidebar if it is showing
-        hideSidebar(window, self).catch(() => {});
-
-        // kill the menu item
-        let { bar } = windowNS(window);
-        if (bar) {
-          removeFromArray(viewsFor(self), bar);
-          dispose(bar);
-        }
-
-        // kill listeners
-        let sidebar = window.document.getElementById('sidebar');
-
-        if (windowNS(window).onSidebarLoad) {
-          sidebar && sidebar.removeEventListener('load', windowNS(window).onSidebarLoad, true)
-          windowNS(window).onSidebarLoad = null;
-        }
-
-        let panelBrowser = sidebar && sidebar.contentDocument.getElementById(WEB_PANEL_BROWSER_ID);
-        if (windowNS(window).onWebPanelSidebarCreated) {
-          panelBrowser && panelBrowser.removeEventListener('DOMWindowCreated', windowNS(window).onWebPanelSidebarCreated, true);
-          windowNS(window).onWebPanelSidebarCreated = null;
-        }
-
-        if (windowNS(window).onWebPanelSidebarReady) {
-          panelBrowser && panelBrowser.contentWindow.removeEventListener('DOMContentLoaded', windowNS(window).onWebPanelSidebarReady, false);
-          windowNS(window).onWebPanelSidebarReady = null;
-        }
-
-        if (windowNS(window).onWebPanelSidebarLoad) {
-          panelBrowser && panelBrowser.contentWindow.removeEventListener('load', windowNS(window).onWebPanelSidebarLoad, true);
-          windowNS(window).onWebPanelSidebarLoad = null;
-        }
-
-        if (windowNS(window).onWebPanelSidebarUnload) {
-          panelBrowser && panelBrowser.contentWindow.removeEventListener('unload', windowNS(window).onWebPanelSidebarUnload, true);
-          windowNS(window).onWebPanelSidebarUnload();
-        }
-      }
-    });
-
-    views.set(this, bars);
-
-    add(sidebars, this);
-  },
-  get id() {
-    return (modelFor(this) || {}).id;
-  },
-  get title() {
-    return (modelFor(this) || {}).title;
-  },
-  set title(v) {
-    // destroyed?
-    if (!modelFor(this))
-      return;
-    // validation
-    if (typeof v != 'string')
-      throw Error('title must be a string');
-    validateTitleAndURLCombo(this, v, this.url);
-    // do update
-    updateTitle(this, v);
-    return modelFor(this).title = v;
-  },
-  get url() {
-    return (modelFor(this) || {}).url;
-  },
-  set url(v) {
-    // destroyed?
-    if (!modelFor(this))
-      return;
-
-    // validation
-    if (!isLocalURL(v))
-      throw Error('the url must be a valid local url');
-
-    validateTitleAndURLCombo(this, this.title, v);
-
-    // do update
-    updateURL(this, v);
-    modelFor(this).url = v;
-  },
-  show: function(window) {
-    return showSidebar(viewFor(window), this);
-  },
-  hide: function(window) {
-    return hideSidebar(viewFor(window), this);
-  },
-  dispose: function() {
-    const internals = sidebarNS(this);
-
-    off(this);
-
-    remove(sidebars, this);
-
-    // stop tracking windows
-    if (internals.tracker) {
-      internals.tracker.unload();
-    }
-
-    internals.tracker = null;
-    internals.windowNS = null;
-
-    views.delete(this);
-    models.delete(this);
-  }
-});
-exports.Sidebar = Sidebar;
-
-function validateTitleAndURLCombo(sidebar, title, url) {
-  url = resolveURL(url);
-
-  if (sidebar.title == title && sidebar.url == url) {
-    return false;
-  }
-
-  for (let window of windows(null, { includePrivate: true })) {
-    let sidebar = window.document.querySelector('menuitem[sidebarurl="' + url + '"][label="' + title + '"]');
-    if (sidebar) {
-      throw Error('The provided title and url combination is invalid (already used).');
-    }
-  }
-
-  return false;
-}
-
-isShowing.define(Sidebar, isSidebarShowing.bind(null, null));
-show.define(Sidebar, showSidebar.bind(null, null));
-hide.define(Sidebar, hideSidebar.bind(null, null));
-
-identify.define(Sidebar, function(sidebar) {
-  return sidebar.id;
-});
-
-function toggleSidebar(window, sidebar) {
-  // TODO: make sure this is not private
-  window = window || getMostRecentBrowserWindow();
-  if (isSidebarShowing(window, sidebar)) {
-    return hideSidebar(window, sidebar);
-  }
-  return showSidebar(window, sidebar);
-}
-toggle.define(Sidebar, toggleSidebar.bind(null, null));
diff --git a/addon-sdk/source/lib/sdk/ui/sidebar/actions.js b/addon-sdk/source/lib/sdk/ui/sidebar/actions.js
deleted file mode 100644
index 4a52984c9..000000000
--- a/addon-sdk/source/lib/sdk/ui/sidebar/actions.js
+++ /dev/null
@@ -1,10 +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';
-
-const method = require('../../../method/core');
-
-exports.show = method('show');
-exports.hide = method('hide');
-exports.toggle = method('toggle');
diff --git a/addon-sdk/source/lib/sdk/ui/sidebar/contract.js b/addon-sdk/source/lib/sdk/ui/sidebar/contract.js
deleted file mode 100644
index b59c37c0b..000000000
--- a/addon-sdk/source/lib/sdk/ui/sidebar/contract.js
+++ /dev/null
@@ -1,27 +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';
-
-const { contract } = require('../../util/contract');
-const { isValidURI, URL, isLocalURL } = require('../../url');
-const { isNil, isObject, isString } = require('../../lang/type');
-
-exports.contract = contract({
-  id: {
-  	is: [ 'string', 'undefined' ],
-  	ok: v => /^[a-z0-9-_]+$/i.test(v),
-    msg: 'The option "id" must be a valid alphanumeric id (hyphens and ' +
-         'underscores are allowed).'
-  },
-  title: {
-  	is: [ 'string' ],
-  	ok: v => v.length
-  },
-  url: {
-    is: [ 'string' ],
-    ok: v => isLocalURL(v),
-    map: v => v.toString(),
-    msg: 'The option "url" must be a valid local URI.'
-  }
-});
diff --git a/addon-sdk/source/lib/sdk/ui/sidebar/namespace.js b/addon-sdk/source/lib/sdk/ui/sidebar/namespace.js
deleted file mode 100644
index d79725d1a..000000000
--- a/addon-sdk/source/lib/sdk/ui/sidebar/namespace.js
+++ /dev/null
@@ -1,15 +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';
-
-const models = exports.models = new WeakMap();
-const views = exports.views = new WeakMap();
-exports.buttons = new WeakMap();
-
-exports.viewsFor = function viewsFor(sidebar) {
-  return views.get(sidebar);
-};
-exports.modelFor = function modelFor(sidebar) {
-  return models.get(sidebar);
-};
diff --git a/addon-sdk/source/lib/sdk/ui/sidebar/utils.js b/addon-sdk/source/lib/sdk/ui/sidebar/utils.js
deleted file mode 100644
index d6145c32e..000000000
--- a/addon-sdk/source/lib/sdk/ui/sidebar/utils.js
+++ /dev/null
@@ -1,8 +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';
-
-const method = require('../../../method/core');
-
-exports.isShowing = method('isShowing');
diff --git a/addon-sdk/source/lib/sdk/ui/sidebar/view.js b/addon-sdk/source/lib/sdk/ui/sidebar/view.js
deleted file mode 100644
index c91e69d3d..000000000
--- a/addon-sdk/source/lib/sdk/ui/sidebar/view.js
+++ /dev/null
@@ -1,214 +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',
-  'engines': {
-    'Firefox': '*'
-  }
-};
-
-const { models, buttons, views, viewsFor, modelFor } = require('./namespace');
-const { isBrowser, getMostRecentBrowserWindow, windows, isWindowPrivate } = require('../../window/utils');
-const { setStateFor } = require('../state');
-const { defer } = require('../../core/promise');
-const { isPrivateBrowsingSupported, data } = require('../../self');
-
-const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
-const WEB_PANEL_BROWSER_ID = 'web-panels-browser';
-
-const resolveURL = (url) => url ? data.url(url) : url;
-
-function create(window, details) {
-  let id = makeID(details.id);
-  let { document } = window;
-
-  if (document.getElementById(id))
-    throw new Error('The ID "' + details.id + '" seems already used.');
-
-  let menuitem = document.createElementNS(XUL_NS, 'menuitem');
-  menuitem.setAttribute('id', id);
-  menuitem.setAttribute('label', details.title);
-  menuitem.setAttribute('sidebarurl', resolveURL(details.sidebarurl));
-  menuitem.setAttribute('checked', 'false');
-  menuitem.setAttribute('type', 'checkbox');
-  menuitem.setAttribute('group', 'sidebar');
-  menuitem.setAttribute('autoCheck', 'false');
-
-  document.getElementById('viewSidebarMenu').appendChild(menuitem);
-
-  return menuitem;
-}
-exports.create = create;
-
-function dispose(menuitem) {
-  menuitem.parentNode.removeChild(menuitem);
-}
-exports.dispose = dispose;
-
-function updateTitle(sidebar, title) {
-  let button = buttons.get(sidebar);
-
-  for (let window of windows(null, { includePrivate: true })) {
-  	let { document } = window;
-
-    // update the button
-    if (button) {
-      setStateFor(button, window, { label: title });
-    }
-
-    // update the menuitem
-    let mi = document.getElementById(makeID(sidebar.id));
-    if (mi) {
-      mi.setAttribute('label', title)
-    }
-
-    // update sidebar, if showing
-    if (isSidebarShowing(window, sidebar)) {
-      document.getElementById('sidebar-title').setAttribute('value', title);
-    }
-  }
-}
-exports.updateTitle = updateTitle;
-
-function updateURL(sidebar, url) {
-  let eleID = makeID(sidebar.id);
-
-  url = resolveURL(url);
-
-  for (let window of windows(null, { includePrivate: true })) {
-    // update the menuitem
-    let mi = window.document.getElementById(eleID);
-    if (mi) {
-      mi.setAttribute('sidebarurl', url)
-    }
-
-    // update sidebar, if showing
-    if (isSidebarShowing(window, sidebar)) {
-      showSidebar(window, sidebar, url);
-    }
-  }
-}
-exports.updateURL = updateURL;
-
-function isSidebarShowing(window, sidebar) {
-  let win = window || getMostRecentBrowserWindow();
-
-  // make sure there is a window
-  if (!win) {
-    return false;
-  }
-
-  // make sure there is a sidebar for the window
-  let sb = win.document.getElementById('sidebar');
-  let sidebarTitle = win.document.getElementById('sidebar-title');
-  if (!(sb && sidebarTitle)) {
-    return false;
-  }
-
-  // checks if the sidebar box is hidden
-  let sbb = win.document.getElementById('sidebar-box');
-  if (!sbb || sbb.hidden) {
-    return false;
-  }
-
-  if (sidebarTitle.value == modelFor(sidebar).title) {
-    let url = resolveURL(modelFor(sidebar).url);
-
-    // checks if the sidebar is loading
-    if (win.gWebPanelURI == url) {
-      return true;
-    }
-
-    // checks if the sidebar loaded already
-    let ele = sb.contentDocument && sb.contentDocument.getElementById(WEB_PANEL_BROWSER_ID);
-    if (!ele) {
-      return false;
-    }
-
-    if (ele.getAttribute('cachedurl') == url) {
-      return true;
-    }
-
-    if (ele && ele.contentWindow && ele.contentWindow.location == url) {
-      return true;
-    }
-  }
-
-  // default
-  return false;
-}
-exports.isSidebarShowing = isSidebarShowing;
-
-function showSidebar(window, sidebar, newURL) {
-  window = window || getMostRecentBrowserWindow();
-
-  let { promise, resolve, reject } = defer();
-  let model = modelFor(sidebar);
-
-  if (!newURL && isSidebarShowing(window, sidebar)) {
-    resolve({});
-  }
-  else if (!isPrivateBrowsingSupported && isWindowPrivate(window)) {
-    reject(Error('You cannot show a sidebar on private windows'));
-  }
-  else {
-    sidebar.once('show', resolve);
-
-    let menuitem = window.document.getElementById(makeID(model.id));
-    menuitem.setAttribute('checked', true);
-
-    window.openWebPanel(model.title, resolveURL(newURL || model.url));
-  }
-
-  return promise;
-}
-exports.showSidebar = showSidebar;
-
-
-function hideSidebar(window, sidebar) {
-  window = window || getMostRecentBrowserWindow();
-
-  let { promise, resolve, reject } = defer();
-
-  if (!isSidebarShowing(window, sidebar)) {
-    reject(Error('The sidebar is already hidden'));
-  }
-  else {
-    sidebar.once('hide', resolve);
-
-    // Below was taken from http://mxr.mozilla.org/mozilla-central/source/browser/base/content/browser.js#4775
-    // the code for window.todggleSideBar()..
-    let { document } = window;
-    let sidebarEle = document.getElementById('sidebar');
-    let sidebarTitle = document.getElementById('sidebar-title');
-    let sidebarBox = document.getElementById('sidebar-box');
-    let sidebarSplitter = document.getElementById('sidebar-splitter');
-    let commandID = sidebarBox.getAttribute('sidebarcommand');
-    let sidebarBroadcaster = document.getElementById(commandID);
-
-    sidebarBox.hidden = true;
-    sidebarSplitter.hidden = true;
-
-    sidebarEle.setAttribute('src', 'about:blank');
-    //sidebarEle.docShell.createAboutBlankContentViewer(null);
-
-    sidebarBroadcaster.removeAttribute('checked');
-    sidebarBox.setAttribute('sidebarcommand', '');
-    sidebarTitle.value = '';
-    sidebarBox.hidden = true;
-    sidebarSplitter.hidden = true;
-
-    // TODO: perhaps this isn't necessary if the window is not most recent?
-    window.gBrowser.selectedBrowser.focus();
-  }
-
-  return promise;
-}
-exports.hideSidebar = hideSidebar;
-
-function makeID(id) {
-  return 'jetpack-sidebar-' + id;
-}
diff --git a/addon-sdk/source/lib/sdk/ui/state.js b/addon-sdk/source/lib/sdk/ui/state.js
deleted file mode 100644
index 152ce696d..000000000
--- a/addon-sdk/source/lib/sdk/ui/state.js
+++ /dev/null
@@ -1,239 +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';
-
-// The Button module currently supports only Firefox.
-// See: https://bugzilla.mozilla.org/show_bug.cgi?id=jetpack-panel-apps
-module.metadata = {
-  'stability': 'experimental',
-  'engines': {
-    'Firefox': '*',
-    'SeaMonkey': '*',
-    'Thunderbird': '*'
-  }
-};
-
-const { Ci } = require('chrome');
-
-const events = require('../event/utils');
-const { events: browserEvents } = require('../browser/events');
-const { events: tabEvents } = require('../tab/events');
-const { events: stateEvents } = require('./state/events');
-
-const { windows, isInteractive, getFocusedBrowser } = require('../window/utils');
-const { getActiveTab, getOwnerWindow } = require('../tabs/utils');
-
-const { ignoreWindow } = require('../private-browsing/utils');
-
-const { freeze } = Object;
-const { merge } = require('../util/object');
-const { on, off, emit } = require('../event/core');
-
-const { add, remove, has, clear, iterator } = require('../lang/weak-set');
-const { isNil } = require('../lang/type');
-
-const { viewFor } = require('../view/core');
-
-const components = new WeakMap();
-
-const ERR_UNREGISTERED = 'The state cannot be set or get. ' +
-  'The object may be not be registered, or may already have been unloaded.';
-
-const ERR_INVALID_TARGET = 'The state cannot be set or get for this target.' +
-  'Only window, tab and registered component are valid targets.';
-
-const isWindow = thing => thing instanceof Ci.nsIDOMWindow;
-const isTab = thing => thing.tagName && thing.tagName.toLowerCase() === 'tab';
-const isActiveTab = thing => isTab(thing) && thing === getActiveTab(getOwnerWindow(thing));
-const isEnumerable = window => !ignoreWindow(window);
-const browsers = _ =>
-  windows('navigator:browser', { includePrivate: true }).filter(isInteractive);
-const getMostRecentTab = _ => getActiveTab(getFocusedBrowser());
-
-function getStateFor(component, target) {
-  if (!isRegistered(component))
-    throw new Error(ERR_UNREGISTERED);
-
-  if (!components.has(component))
-    return null;
-
-  let states = components.get(component);
-
-  if (target) {
-    if (isTab(target) || isWindow(target) || target === component)
-      return states.get(target) || null;
-    else
-      throw new Error(ERR_INVALID_TARGET);
-  }
-
-  return null;
-}
-exports.getStateFor = getStateFor;
-
-function getDerivedStateFor(component, target) {
-  if (!isRegistered(component))
-    throw new Error(ERR_UNREGISTERED);
-
-  if (!components.has(component))
-    return null;
-
-  let states = components.get(component);
-
-  let componentState = states.get(component);
-  let windowState = null;
-  let tabState = null;
-
-  if (target) {
-    // has a target
-    if (isTab(target)) {
-      windowState = states.get(getOwnerWindow(target), null);
-
-      if (states.has(target)) {
-        // we have a tab state
-        tabState = states.get(target);
-      }
-    }
-    else if (isWindow(target) && states.has(target)) {
-      // we have a window state
-      windowState = states.get(target);
-    }
-  }
-
-  return freeze(merge({}, componentState, windowState, tabState));
-}
-exports.getDerivedStateFor = getDerivedStateFor;
-
-function setStateFor(component, target, state) {
-  if (!isRegistered(component))
-    throw new Error(ERR_UNREGISTERED);
-
-  let isComponentState = target === component;
-  let targetWindows = isWindow(target) ? [target] :
-                      isActiveTab(target) ? [getOwnerWindow(target)] :
-                      isComponentState ? browsers() :
-                      isTab(target) ? [] :
-                      null;
-
-  if (!targetWindows)
-    throw new Error(ERR_INVALID_TARGET);
-
-  // initialize the state's map
-  if (!components.has(component))
-    components.set(component, new WeakMap());
-
-  let states = components.get(component);
-
-  if (state === null && !isComponentState) // component state can't be deleted
-    states.delete(target);
-  else {
-    let base = isComponentState ? states.get(target) : null;
-    states.set(target, freeze(merge({}, base, state)));
-  }
-
-  render(component, targetWindows);
-}
-exports.setStateFor = setStateFor;
-
-function render(component, targetWindows) {
-  targetWindows = targetWindows ? [].concat(targetWindows) : browsers();
-
-  for (let window of targetWindows.filter(isEnumerable)) {
-    let tabState = getDerivedStateFor(component, getActiveTab(window));
-
-    emit(stateEvents, 'data', {
-      type: 'render',
-      target: component,
-      window: window,
-      state: tabState
-    });
-
-  }
-}
-exports.render = render;
-
-function properties(contract) {
-  let { rules } = contract;
-  let descriptor = Object.keys(rules).reduce(function(descriptor, name) {
-    descriptor[name] = {
-      get: function() { return getDerivedStateFor(this)[name] },
-      set: function(value) {
-        let changed = {};
-        changed[name] = value;
-
-        setStateFor(this, this, contract(changed));
-      }
-    }
-    return descriptor;
-  }, {});
-
-  return Object.create(Object.prototype, descriptor);
-}
-exports.properties = properties;
-
-function state(contract) {
-  return {
-    state: function state(target, state) {
-      let nativeTarget = target === 'window' ? getFocusedBrowser()
-                          : target === 'tab' ? getMostRecentTab()
-                          : target === this ? null
-                          : viewFor(target);
-
-      if (!nativeTarget && target !== this && !isNil(target))
-        throw new Error(ERR_INVALID_TARGET);
-
-      target = nativeTarget || target;
-
-      // jquery style
-      return arguments.length < 2
-        ? getDerivedStateFor(this, target)
-        : setStateFor(this, target, contract(state))
-    }
-  }
-}
-exports.state = state;
-
-const register = (component, state) => {
-  add(components, component);
-  setStateFor(component, component, state);
-}
-exports.register = register;
-
-const unregister = component => {
-  remove(components, component);
-}
-exports.unregister = unregister;
-
-const isRegistered = component => has(components, component);
-exports.isRegistered = isRegistered;
-
-var tabSelect = events.filter(tabEvents, e => e.type === 'TabSelect');
-var tabClose = events.filter(tabEvents, e => e.type === 'TabClose');
-var windowOpen = events.filter(browserEvents, e => e.type === 'load');
-var windowClose = events.filter(browserEvents, e => e.type === 'close');
-
-var close = events.merge([tabClose, windowClose]);
-var activate = events.merge([windowOpen, tabSelect]);
-
-on(activate, 'data', ({target}) => {
-  let [window, tab] = isWindow(target)
-                        ? [target, getActiveTab(target)]
-                        : [getOwnerWindow(target), target];
-
-  if (ignoreWindow(window)) return;
-
-  for (let component of iterator(components)) {
-    emit(stateEvents, 'data', {
-      type: 'render',
-      target: component,
-      window: window,
-      state: getDerivedStateFor(component, tab)
-    });
-  }
-});
-
-on(close, 'data', function({target}) {
-  for (let component of iterator(components)) {
-    components.get(component).delete(target);
-  }
-});
diff --git a/addon-sdk/source/lib/sdk/ui/state/events.js b/addon-sdk/source/lib/sdk/ui/state/events.js
deleted file mode 100644
index 98909656a..000000000
--- a/addon-sdk/source/lib/sdk/ui/state/events.js
+++ /dev/null
@@ -1,18 +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': 'experimental',
-  'engines': {
-    'Firefox': '*',
-    'SeaMonkey': '*',
-    'Thunderbird': '*'
-  }
-};
-
-var channel = {};
-
-exports.events = channel;
diff --git a/addon-sdk/source/lib/sdk/ui/toolbar.js b/addon-sdk/source/lib/sdk/ui/toolbar.js
deleted file mode 100644
index c1becab2d..000000000
--- a/addon-sdk/source/lib/sdk/ui/toolbar.js
+++ /dev/null
@@ -1,16 +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": "experimental",
-  "engines": {
-    "Firefox": "> 28"
-  }
-};
-
-const { Toolbar } = require("./toolbar/model");
-require("./toolbar/view");
-
-exports.Toolbar = Toolbar;
diff --git a/addon-sdk/source/lib/sdk/ui/toolbar/model.js b/addon-sdk/source/lib/sdk/ui/toolbar/model.js
deleted file mode 100644
index 5c5428606..000000000
--- a/addon-sdk/source/lib/sdk/ui/toolbar/model.js
+++ /dev/null
@@ -1,151 +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": "experimental",
-  "engines": {
-    "Firefox": "> 28"
-  }
-};
-
-const { Class } = require("../../core/heritage");
-const { EventTarget } = require("../../event/target");
-const { off, setListeners, emit } = require("../../event/core");
-const { Reactor, foldp, merges, send } = require("../../event/utils");
-const { Disposable } = require("../../core/disposable");
-const { InputPort } = require("../../input/system");
-const { OutputPort } = require("../../output/system");
-const { identify } = require("../id");
-const { pairs, object, map, each } = require("../../util/sequence");
-const { patch, diff } = require("diffpatcher/index");
-const { contract } = require("../../util/contract");
-const { id: addonID } = require("../../self");
-
-// Input state is accumulated from the input received form the toolbar
-// view code & local output. Merging local output reflects local state
-// changes without complete roundloop.
-const input = foldp(patch, {}, new InputPort({ id: "toolbar-changed" }));
-const output = new OutputPort({ id: "toolbar-change" });
-
-// Takes toolbar title and normalizes is to an
-// identifier, also prefixes with add-on id.
-const titleToId = title =>
-  ("toolbar-" + addonID + "-" + title).
-    toLowerCase().
-    replace(/\s/g, "-").
-    replace(/[^A-Za-z0-9_\-]/g, "");
-
-const validate = contract({
-  title: {
-    is: ["string"],
-    ok: x => x.length > 0,
-    msg: "The `option.title` string must be provided"
-  },
-  items: {
-    is:["undefined", "object", "array"],
-    msg: "The `options.items` must be iterable sequence of items"
-  },
-  hidden: {
-    is: ["boolean", "undefined"],
-    msg: "The `options.hidden` must be boolean"
-  }
-});
-
-// Toolbars is a mapping between `toolbar.id` & `toolbar` instances,
-// which is used to find intstance for dispatching events.
-var toolbars = new Map();
-
-const Toolbar = Class({
-  extends: EventTarget,
-  implements: [Disposable],
-  initialize: function(params={}) {
-    const options = validate(params);
-    const id = titleToId(options.title);
-
-    if (toolbars.has(id))
-      throw Error("Toolbar with this id already exists: " + id);
-
-    // Set of the items in the toolbar isn't mutable, as a matter of fact
-    // it just defines desired set of items, actual set is under users
-    // control. Conver test to an array and freeze to make sure users won't
-    // try mess with it.
-    const items = Object.freeze(options.items ? [...options.items] : []);
-
-    const initial = {
-      id: id,
-      title: options.title,
-      // By default toolbars are visible when add-on is installed, unless
-      // add-on authors decides it should be hidden. From that point on
-      // user is in control.
-      collapsed: !!options.hidden,
-      // In terms of state only identifiers of items matter.
-      items: items.map(identify)
-    };
-
-    this.id = id;
-    this.items = items;
-
-    toolbars.set(id, this);
-    setListeners(this, params);
-
-    // Send initial state to the host so it can reflect it
-    // into a user interface.
-    send(output, object([id, initial]));
-  },
-
-  get title() {
-    const state = reactor.value[this.id];
-    return state && state.title;
-  },
-  get hidden() {
-    const state = reactor.value[this.id];
-    return state && state.collapsed;
-  },
-
-  destroy: function() {
-    send(output, object([this.id, null]));
-  },
-  // `JSON.stringify` serializes objects based of the return
-  // value of this method. For convinienc we provide this method
-  // to serialize actual state data. Note: items will also be
-  // serialized so they should probably implement `toJSON`.
-  toJSON: function() {
-    return {
-      id: this.id,
-      title: this.title,
-      hidden: this.hidden,
-      items: this.items
-    };
-  }
-});
-exports.Toolbar = Toolbar;
-identify.define(Toolbar, toolbar => toolbar.id);
-
-const dispose = toolbar => {
-  toolbars.delete(toolbar.id);
-  emit(toolbar, "detach");
-  off(toolbar);
-};
-
-const reactor = new Reactor({
-  onStep: (present, past) => {
-    const delta = diff(past, present);
-
-    each(([id, update]) => {
-      const toolbar = toolbars.get(id);
-
-      // Remove
-      if (!update)
-        dispose(toolbar);
-      // Add
-      else if (!past[id])
-        emit(toolbar, "attach");
-      // Update
-      else
-        emit(toolbar, update.collapsed ? "hide" : "show", toolbar);
-    }, pairs(delta));
-  }
-});
-reactor.run(input);
diff --git a/addon-sdk/source/lib/sdk/ui/toolbar/view.js b/addon-sdk/source/lib/sdk/ui/toolbar/view.js
deleted file mode 100644
index 4ef0c3d46..000000000
--- a/addon-sdk/source/lib/sdk/ui/toolbar/view.js
+++ /dev/null
@@ -1,248 +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": "experimental",
-  "engines": {
-    "Firefox": "> 28"
-  }
-};
-
-const { Cu } = require("chrome");
-const { CustomizableUI } = Cu.import('resource:///modules/CustomizableUI.jsm', {});
-const { subscribe, send, Reactor, foldp, lift, merges } = require("../../event/utils");
-const { InputPort } = require("../../input/system");
-const { OutputPort } = require("../../output/system");
-const { Interactive } = require("../../input/browser");
-const { CustomizationInput } = require("../../input/customizable-ui");
-const { pairs, map, isEmpty, object,
-        each, keys, values } = require("../../util/sequence");
-const { curry, flip } = require("../../lang/functional");
-const { patch, diff } = require("diffpatcher/index");
-const prefs = require("../../preferences/service");
-const { getByOuterId } = require("../../window/utils");
-const { ignoreWindow } = require('../../private-browsing/utils');
-
-const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
-const PREF_ROOT = "extensions.sdk-toolbar-collapsed.";
-
-
-// There are two output ports one for publishing changes that occured
-// and the other for change requests. Later is synchronous and is only
-// consumed here. Note: it needs to be synchronous to avoid race conditions
-// when `collapsed` attribute changes are caused by user interaction and
-// toolbar is destroyed between the ticks.
-const output = new OutputPort({ id: "toolbar-changed" });
-const syncoutput = new OutputPort({ id: "toolbar-change", sync: true });
-
-// Merge disptached changes and recevied changes from models to keep state up to
-// date.
-const Toolbars = foldp(patch, {}, merges([new InputPort({ id: "toolbar-changed" }),
-                                          new InputPort({ id: "toolbar-change" })]));
-const State = lift((toolbars, windows, customizable) =>
-  ({windows: windows, toolbars: toolbars, customizable: customizable}),
-  Toolbars, Interactive, new CustomizationInput());
-
-// Shared event handler that makes `event.target.parent` collapsed.
-// Used as toolbar's close buttons click handler.
-const collapseToolbar = event => {
-  const toolbar = event.target.parentNode;
-  toolbar.collapsed = true;
-};
-
-const parseAttribute = x =>
-  x === "true" ? true :
-  x === "false" ? false :
-  x === "" ? null :
-  x;
-
-// Shared mutation observer that is used to observe `toolbar` node's
-// attribute mutations. Mutations are aggregated in the `delta` hash
-// and send to `ToolbarStateChanged` channel to let model know state
-// has changed.
-const attributesChanged = mutations => {
-  const delta = mutations.reduce((changes, {attributeName, target}) => {
-    const id = target.id;
-    const field = attributeName === "toolbarname" ? "title" : attributeName;
-    let change = changes[id] || (changes[id] = {});
-    change[field] = parseAttribute(target.getAttribute(attributeName));
-    return changes;
-  }, {});
-
-  // Calculate what are the updates from the current state and if there are
-  // any send them.
-  const updates = diff(reactor.value, patch(reactor.value, delta));
-
-  if (!isEmpty(pairs(updates))) {
-    // TODO: Consider sending sync to make sure that there won't be a new
-    // update doing a delete in the meantime.
-    send(syncoutput, updates);
-  }
-};
-
-
-// Utility function creates `toolbar` with a "close" button and returns
-// it back. In addition it set's up a listener and observer to communicate
-// state changes.
-const addView = curry((options, {document, window}) => {
-  if (ignoreWindow(window))
-    return;
-
-  let view = document.createElementNS(XUL_NS, "toolbar");
-  view.setAttribute("id", options.id);
-  view.setAttribute("collapsed", options.collapsed);
-  view.setAttribute("toolbarname", options.title);
-  view.setAttribute("pack", "end");
-  view.setAttribute("customizable", "false");
-  view.setAttribute("style", "padding: 2px 0; max-height: 40px;");
-  view.setAttribute("mode", "icons");
-  view.setAttribute("iconsize", "small");
-  view.setAttribute("context", "toolbar-context-menu");
-  view.setAttribute("class", "chromeclass-toolbar");
-
-  let label = document.createElementNS(XUL_NS, "label");
-  label.setAttribute("value", options.title);
-  label.setAttribute("collapsed", "true");
-  view.appendChild(label);
-
-  let closeButton = document.createElementNS(XUL_NS, "toolbarbutton");
-  closeButton.setAttribute("id", "close-" + options.id);
-  closeButton.setAttribute("class", "close-icon");
-  closeButton.setAttribute("customizable", false);
-  closeButton.addEventListener("command", collapseToolbar);
-
-  view.appendChild(closeButton);
-
-  // In order to have a close button not costumizable, aligned on the right,
-  // leaving the customizable capabilities of Australis, we need to create
-  // a toolbar inside a toolbar.
-  // This is should be a temporary hack, we should have a proper XBL for toolbar
-  // instead. See:
-  // https://bugzilla.mozilla.org/show_bug.cgi?id=982005
-  let toolbar = document.createElementNS(XUL_NS, "toolbar");
-  toolbar.setAttribute("id", "inner-" + options.id);
-  toolbar.setAttribute("defaultset", options.items.join(","));
-  toolbar.setAttribute("customizable", "true");
-  toolbar.setAttribute("style", "-moz-appearance: none; overflow: hidden");
-  toolbar.setAttribute("mode", "icons");
-  toolbar.setAttribute("iconsize", "small");
-  toolbar.setAttribute("context", "toolbar-context-menu");
-  toolbar.setAttribute("flex", "1");
-
-  view.insertBefore(toolbar, closeButton);
-
-  const observer = new document.defaultView.MutationObserver(attributesChanged);
-  observer.observe(view, { attributes: true,
-                           attributeFilter: ["collapsed", "toolbarname"] });
-
-  const toolbox = document.getElementById("navigator-toolbox");
-  toolbox.appendChild(view);
-});
-const viewAdd = curry(flip(addView));
-
-const removeView = curry((id, {document}) => {
-  const view = document.getElementById(id);
-  if (view) view.remove();
-});
-
-const updateView = curry((id, {title, collapsed, isCustomizing}, {document}) => {
-  const view = document.getElementById(id);
-
-  if (!view)
-    return;
-
-  if (title)
-    view.setAttribute("toolbarname", title);
-
-  if (collapsed !== void(0))
-    view.setAttribute("collapsed", Boolean(collapsed));
-
-  if (isCustomizing !== void(0)) {
-    view.querySelector("label").collapsed = !isCustomizing;
-    view.querySelector("toolbar").style.visibility = isCustomizing
-                                                ? "hidden" : "visible";
-  }
-});
-
-const viewUpdate = curry(flip(updateView));
-
-// Utility function used to register toolbar into CustomizableUI.
-const registerToolbar = state => {
-  // If it's first additon register toolbar as customizableUI component.
-  CustomizableUI.registerArea("inner-" + state.id, {
-    type: CustomizableUI.TYPE_TOOLBAR,
-    legacy: true,
-    defaultPlacements: [...state.items]
-  });
-};
-// Utility function used to unregister toolbar from the CustomizableUI.
-const unregisterToolbar = CustomizableUI.unregisterArea;
-
-const reactor = new Reactor({
-  onStep: (present, past) => {
-    const delta = diff(past, present);
-
-    each(([id, update]) => {
-      // If update is `null` toolbar is removed, in such case
-      // we unregister toolbar and remove it from each window
-      // it was added to.
-      if (update === null) {
-        unregisterToolbar("inner-" + id);
-        each(removeView(id), values(past.windows));
-
-        send(output, object([id, null]));
-      }
-      else if (past.toolbars[id]) {
-        // If `collapsed` state for toolbar was updated, persist
-        // it for a future sessions.
-        if (update.collapsed !== void(0))
-          prefs.set(PREF_ROOT + id, update.collapsed);
-
-        // Reflect update in each window it was added to.
-        each(updateView(id, update), values(past.windows));
-
-        send(output, object([id, update]));
-      }
-      // Hack: Mutation observers are invoked async, which means that if
-      // client does `hide(toolbar)` & then `toolbar.destroy()` by the
-      // time we'll get update for `collapsed` toolbar will be removed.
-      // For now we check if `update.id` is present which will be undefined
-      // in such cases.
-      else if (update.id) {
-        // If it is a new toolbar we create initial state by overriding
-        // `collapsed` filed with value persisted in previous sessions.
-        const state = patch(update, {
-          collapsed: prefs.get(PREF_ROOT + id, update.collapsed),
-        });
-
-        // Register toolbar and add it each window known in the past
-        // (note that new windows if any will be handled in loop below).
-        registerToolbar(state);
-        each(addView(state), values(past.windows));
-
-        send(output, object([state.id, state]));
-      }
-    }, pairs(delta.toolbars));
-
-    // Add views to every window that was added.
-    each(window => {
-      if (window)
-        each(viewAdd(window), values(past.toolbars));
-    }, values(delta.windows));
-
-    each(([id, isCustomizing]) => {
-      each(viewUpdate(getByOuterId(id), {isCustomizing: !!isCustomizing}),
-        keys(present.toolbars));
-
-    }, pairs(delta.customizable))
-  },
-  onEnd: state => {
-    each(id => {
-      unregisterToolbar("inner-" + id);
-      each(removeView(id), values(state.windows));
-    }, keys(state.toolbars));
-  }
-});
-reactor.run(State);