Remove leftover static assets specific to individual blog posts

9 files changed, 0 insertions, 2791 deletions

diff --git a/src/http/static/viz/2/goog/events/browserevent.js b/src/http/static/viz/2/goog/events/browserevent.js
deleted file mode 100644
index b2261a3..0000000
--- a/src/http/static/viz/2/goog/events/browserevent.js
+++ /dev/null
@@ -1,409 +0,0 @@
-// Copyright 2005 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview A patched, standardized event object for browser events.
- *
- * <pre>
- * The patched event object contains the following members:
- * - type           {string}    Event type, e.g. 'click'
- * - target         {Object}    The element that actually triggered the event
- * - currentTarget  {Object}    The element the listener is attached to
- * - relatedTarget  {Object}    For mouseover and mouseout, the previous object
- * - offsetX        {number}    X-coordinate relative to target
- * - offsetY        {number}    Y-coordinate relative to target
- * - clientX        {number}    X-coordinate relative to viewport
- * - clientY        {number}    Y-coordinate relative to viewport
- * - screenX        {number}    X-coordinate relative to the edge of the screen
- * - screenY        {number}    Y-coordinate relative to the edge of the screen
- * - button         {number}    Mouse button. Use isButton() to test.
- * - keyCode        {number}    Key-code
- * - ctrlKey        {boolean}   Was ctrl key depressed
- * - altKey         {boolean}   Was alt key depressed
- * - shiftKey       {boolean}   Was shift key depressed
- * - metaKey        {boolean}   Was meta key depressed
- * - defaultPrevented {boolean} Whether the default action has been prevented
- * - state          {Object}    History state object
- *
- * NOTE: The keyCode member contains the raw browser keyCode. For normalized
- * key and character code use {@link goog.events.KeyHandler}.
- * </pre>
- *
- * @author arv@google.com (Erik Arvidsson)
- */
-
-goog.provide('goog.events.BrowserEvent');
-goog.provide('goog.events.BrowserEvent.MouseButton');
-
-goog.require('goog.events.BrowserFeature');
-goog.require('goog.events.Event');
-goog.require('goog.events.EventType');
-goog.require('goog.reflect');
-goog.require('goog.userAgent');
-
-
-
-/**
- * Accepts a browser event object and creates a patched, cross browser event
- * object.
- * The content of this object will not be initialized if no event object is
- * provided. If this is the case, init() needs to be invoked separately.
- * @param {Event=} opt_e Browser event object.
- * @param {EventTarget=} opt_currentTarget Current target for event.
- * @constructor
- * @extends {goog.events.Event}
- */
-goog.events.BrowserEvent = function(opt_e, opt_currentTarget) {
-  goog.events.BrowserEvent.base(this, 'constructor', opt_e ? opt_e.type : '');
-
-  /**
-   * Target that fired the event.
-   * @override
-   * @type {Node}
-   */
-  this.target = null;
-
-  /**
-   * Node that had the listener attached.
-   * @override
-   * @type {Node|undefined}
-   */
-  this.currentTarget = null;
-
-  /**
-   * For mouseover and mouseout events, the related object for the event.
-   * @type {Node}
-   */
-  this.relatedTarget = null;
-
-  /**
-   * X-coordinate relative to target.
-   * @type {number}
-   */
-  this.offsetX = 0;
-
-  /**
-   * Y-coordinate relative to target.
-   * @type {number}
-   */
-  this.offsetY = 0;
-
-  /**
-   * X-coordinate relative to the window.
-   * @type {number}
-   */
-  this.clientX = 0;
-
-  /**
-   * Y-coordinate relative to the window.
-   * @type {number}
-   */
-  this.clientY = 0;
-
-  /**
-   * X-coordinate relative to the monitor.
-   * @type {number}
-   */
-  this.screenX = 0;
-
-  /**
-   * Y-coordinate relative to the monitor.
-   * @type {number}
-   */
-  this.screenY = 0;
-
-  /**
-   * Which mouse button was pressed.
-   * @type {number}
-   */
-  this.button = 0;
-
-  /**
-   * Key of key press.
-   * @type {string}
-   */
-  this.key = '';
-
-  /**
-   * Keycode of key press.
-   * @type {number}
-   */
-  this.keyCode = 0;
-
-  /**
-   * Keycode of key press.
-   * @type {number}
-   */
-  this.charCode = 0;
-
-  /**
-   * Whether control was pressed at time of event.
-   * @type {boolean}
-   */
-  this.ctrlKey = false;
-
-  /**
-   * Whether alt was pressed at time of event.
-   * @type {boolean}
-   */
-  this.altKey = false;
-
-  /**
-   * Whether shift was pressed at time of event.
-   * @type {boolean}
-   */
-  this.shiftKey = false;
-
-  /**
-   * Whether the meta key was pressed at time of event.
-   * @type {boolean}
-   */
-  this.metaKey = false;
-
-  /**
-   * History state object, only set for PopState events where it's a copy of the
-   * state object provided to pushState or replaceState.
-   * @type {Object}
-   */
-  this.state = null;
-
-  /**
-   * Whether the default platform modifier key was pressed at time of event.
-   * (This is control for all platforms except Mac, where it's Meta.)
-   * @type {boolean}
-   */
-  this.platformModifierKey = false;
-
-  /**
-   * The browser event object.
-   * @private {Event}
-   */
-  this.event_ = null;
-
-  if (opt_e) {
-    this.init(opt_e, opt_currentTarget);
-  }
-};
-goog.inherits(goog.events.BrowserEvent, goog.events.Event);
-
-
-/**
- * Normalized button constants for the mouse.
- * @enum {number}
- */
-goog.events.BrowserEvent.MouseButton = {
-  LEFT: 0,
-  MIDDLE: 1,
-  RIGHT: 2
-};
-
-
-/**
- * Static data for mapping mouse buttons.
- * @type {!Array<number>}
- */
-goog.events.BrowserEvent.IEButtonMap = [
-  1,  // LEFT
-  4,  // MIDDLE
-  2   // RIGHT
-];
-
-
-/**
- * Accepts a browser event object and creates a patched, cross browser event
- * object.
- * @param {Event} e Browser event object.
- * @param {EventTarget=} opt_currentTarget Current target for event.
- */
-goog.events.BrowserEvent.prototype.init = function(e, opt_currentTarget) {
-  var type = this.type = e.type;
-
-  /**
-   * On touch devices use the first "changed touch" as the relevant touch.
-   * @type {Touch}
-   */
-  var relevantTouch = e.changedTouches ? e.changedTouches[0] : null;
-
-  // TODO(nicksantos): Change this.target to type EventTarget.
-  this.target = /** @type {Node} */ (e.target) || e.srcElement;
-
-  // TODO(nicksantos): Change this.currentTarget to type EventTarget.
-  this.currentTarget = /** @type {Node} */ (opt_currentTarget);
-
-  var relatedTarget = /** @type {Node} */ (e.relatedTarget);
-  if (relatedTarget) {
-    // There's a bug in FireFox where sometimes, relatedTarget will be a
-    // chrome element, and accessing any property of it will get a permission
-    // denied exception. See:
-    // https://bugzilla.mozilla.org/show_bug.cgi?id=497780
-    if (goog.userAgent.GECKO) {
-      if (!goog.reflect.canAccessProperty(relatedTarget, 'nodeName')) {
-        relatedTarget = null;
-      }
-    }
-    // TODO(arv): Use goog.events.EventType when it has been refactored into its
-    // own file.
-  } else if (type == goog.events.EventType.MOUSEOVER) {
-    relatedTarget = e.fromElement;
-  } else if (type == goog.events.EventType.MOUSEOUT) {
-    relatedTarget = e.toElement;
-  }
-
-  this.relatedTarget = relatedTarget;
-
-  if (!goog.isNull(relevantTouch)) {
-    this.clientX = relevantTouch.clientX !== undefined ? relevantTouch.clientX :
-                                                         relevantTouch.pageX;
-    this.clientY = relevantTouch.clientY !== undefined ? relevantTouch.clientY :
-                                                         relevantTouch.pageY;
-    this.screenX = relevantTouch.screenX || 0;
-    this.screenY = relevantTouch.screenY || 0;
-  } else {
-    // Webkit emits a lame warning whenever layerX/layerY is accessed.
-    // http://code.google.com/p/chromium/issues/detail?id=101733
-    this.offsetX = (goog.userAgent.WEBKIT || e.offsetX !== undefined) ?
-        e.offsetX :
-        e.layerX;
-    this.offsetY = (goog.userAgent.WEBKIT || e.offsetY !== undefined) ?
-        e.offsetY :
-        e.layerY;
-    this.clientX = e.clientX !== undefined ? e.clientX : e.pageX;
-    this.clientY = e.clientY !== undefined ? e.clientY : e.pageY;
-    this.screenX = e.screenX || 0;
-    this.screenY = e.screenY || 0;
-  }
-
-  this.button = e.button;
-
-  this.keyCode = e.keyCode || 0;
-  this.key = e.key || '';
-  this.charCode = e.charCode || (type == 'keypress' ? e.keyCode : 0);
-  this.ctrlKey = e.ctrlKey;
-  this.altKey = e.altKey;
-  this.shiftKey = e.shiftKey;
-  this.metaKey = e.metaKey;
-  this.platformModifierKey = goog.userAgent.MAC ? e.metaKey : e.ctrlKey;
-  this.state = e.state;
-  this.event_ = e;
-  if (e.defaultPrevented) {
-    this.preventDefault();
-  }
-};
-
-
-/**
- * Tests to see which button was pressed during the event. This is really only
- * useful in IE and Gecko browsers. And in IE, it's only useful for
- * mousedown/mouseup events, because click only fires for the left mouse button.
- *
- * Safari 2 only reports the left button being clicked, and uses the value '1'
- * instead of 0. Opera only reports a mousedown event for the middle button, and
- * no mouse events for the right button. Opera has default behavior for left and
- * middle click that can only be overridden via a configuration setting.
- *
- * There's a nice table of this mess at http://www.unixpapa.com/js/mouse.html.
- *
- * @param {goog.events.BrowserEvent.MouseButton} button The button
- *     to test for.
- * @return {boolean} True if button was pressed.
- */
-goog.events.BrowserEvent.prototype.isButton = function(button) {
-  if (!goog.events.BrowserFeature.HAS_W3C_BUTTON) {
-    if (this.type == 'click') {
-      return button == goog.events.BrowserEvent.MouseButton.LEFT;
-    } else {
-      return !!(
-          this.event_.button & goog.events.BrowserEvent.IEButtonMap[button]);
-    }
-  } else {
-    return this.event_.button == button;
-  }
-};
-
-
-/**
- * Whether this has an "action"-producing mouse button.
- *
- * By definition, this includes left-click on windows/linux, and left-click
- * without the ctrl key on Macs.
- *
- * @return {boolean} The result.
- */
-goog.events.BrowserEvent.prototype.isMouseActionButton = function() {
-  // Webkit does not ctrl+click to be a right-click, so we
-  // normalize it to behave like Gecko and Opera.
-  return this.isButton(goog.events.BrowserEvent.MouseButton.LEFT) &&
-      !(goog.userAgent.WEBKIT && goog.userAgent.MAC && this.ctrlKey);
-};
-
-
-/**
- * @override
- */
-goog.events.BrowserEvent.prototype.stopPropagation = function() {
-  goog.events.BrowserEvent.superClass_.stopPropagation.call(this);
-  if (this.event_.stopPropagation) {
-    this.event_.stopPropagation();
-  } else {
-    this.event_.cancelBubble = true;
-  }
-};
-
-
-/**
- * @override
- */
-goog.events.BrowserEvent.prototype.preventDefault = function() {
-  goog.events.BrowserEvent.superClass_.preventDefault.call(this);
-  var be = this.event_;
-  if (!be.preventDefault) {
-    be.returnValue = false;
-    if (goog.events.BrowserFeature.SET_KEY_CODE_TO_PREVENT_DEFAULT) {
-
-      try {
-        // Most keys can be prevented using returnValue. Some special keys
-        // require setting the keyCode to -1 as well:
-        //
-        // In IE7:
-        // F3, F5, F10, F11, Ctrl+P, Crtl+O, Ctrl+F (these are taken from IE6)
-        //
-        // In IE8:
-        // Ctrl+P, Crtl+O, Ctrl+F (F1-F12 cannot be stopped through the event)
-        //
-        // We therefore do this for all function keys as well as when Ctrl key
-        // is pressed.
-        var VK_F1 = 112;
-        var VK_F12 = 123;
-        if (be.ctrlKey || be.keyCode >= VK_F1 && be.keyCode <= VK_F12) {
-          be.keyCode = -1;
-        }
-      } catch (ex) {
-        // IE throws an 'access denied' exception when trying to change
-        // keyCode in some situations (e.g. srcElement is input[type=file],
-        // or srcElement is an anchor tag rewritten by parent's innerHTML).
-        // Do nothing in this case.
-      }
-    }
-  } else {
-    be.preventDefault();
-  }
-};
-
-
-/**
- * @return {Event} The underlying browser event object.
- */
-goog.events.BrowserEvent.prototype.getBrowserEvent = function() {
-  return this.event_;
-};
diff --git a/src/http/static/viz/2/goog/events/browserfeature.js b/src/http/static/viz/2/goog/events/browserfeature.js
deleted file mode 100644
index 7cc7bd6..0000000
--- a/src/http/static/viz/2/goog/events/browserfeature.js
+++ /dev/null
@@ -1,122 +0,0 @@
-// Copyright 2010 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Browser capability checks for the events package.
- *
- */
-
-
-goog.provide('goog.events.BrowserFeature');
-
-goog.require('goog.userAgent');
-goog.scope(function() {
-
-
-
-/**
- * Enum of browser capabilities.
- * @enum {boolean}
- */
-goog.events.BrowserFeature = {
-  /**
-   * Whether the button attribute of the event is W3C compliant.  False in
-   * Internet Explorer prior to version 9; document-version dependent.
-   */
-  HAS_W3C_BUTTON:
-      !goog.userAgent.IE || goog.userAgent.isDocumentModeOrHigher(9),
-
-  /**
-   * Whether the browser supports full W3C event model.
-   */
-  HAS_W3C_EVENT_SUPPORT:
-      !goog.userAgent.IE || goog.userAgent.isDocumentModeOrHigher(9),
-
-  /**
-   * To prevent default in IE7-8 for certain keydown events we need set the
-   * keyCode to -1.
-   */
-  SET_KEY_CODE_TO_PREVENT_DEFAULT:
-      goog.userAgent.IE && !goog.userAgent.isVersionOrHigher('9'),
-
-  /**
-   * Whether the {@code navigator.onLine} property is supported.
-   */
-  HAS_NAVIGATOR_ONLINE_PROPERTY:
-      !goog.userAgent.WEBKIT || goog.userAgent.isVersionOrHigher('528'),
-
-  /**
-   * Whether HTML5 network online/offline events are supported.
-   */
-  HAS_HTML5_NETWORK_EVENT_SUPPORT:
-      goog.userAgent.GECKO && goog.userAgent.isVersionOrHigher('1.9b') ||
-      goog.userAgent.IE && goog.userAgent.isVersionOrHigher('8') ||
-      goog.userAgent.OPERA && goog.userAgent.isVersionOrHigher('9.5') ||
-      goog.userAgent.WEBKIT && goog.userAgent.isVersionOrHigher('528'),
-
-  /**
-   * Whether HTML5 network events fire on document.body, or otherwise the
-   * window.
-   */
-  HTML5_NETWORK_EVENTS_FIRE_ON_BODY:
-      goog.userAgent.GECKO && !goog.userAgent.isVersionOrHigher('8') ||
-      goog.userAgent.IE && !goog.userAgent.isVersionOrHigher('9'),
-
-  /**
-   * Whether touch is enabled in the browser.
-   */
-  TOUCH_ENABLED:
-      ('ontouchstart' in goog.global ||
-       !!(goog.global['document'] && document.documentElement &&
-          'ontouchstart' in document.documentElement) ||
-       // IE10 uses non-standard touch events, so it has a different check.
-       !!(goog.global['navigator'] &&
-          goog.global['navigator']['msMaxTouchPoints'])),
-
-  /**
-   * Whether addEventListener supports {passive: true}.
-   * https://developers.google.com/web/updates/2016/06/passive-event-listeners
-   */
-  PASSIVE_EVENTS: purify(function() {
-    // If we're in a web worker or other custom environment, we can't tell.
-    if (!goog.global.addEventListener || !Object.defineProperty) {  // IE 8
-      return false;
-    }
-
-    var passive = false;
-    var options = Object.defineProperty({}, 'passive', {
-      get: function() {
-        passive = true;
-      }
-    });
-    goog.global.addEventListener('test', goog.nullFunction, options);
-    goog.global.removeEventListener('test', goog.nullFunction, options);
-
-    return passive;
-  })
-};
-
-
-/**
- * Tricks Closure Compiler into believing that a function is pure.  The compiler
- * assumes that any `valueOf` function is pure, without analyzing its contents.
- *
- * @param {function(): T} fn
- * @return {T}
- * @template T
- */
-function purify(fn) {
-  return ({valueOf: fn}).valueOf();
-}
-});  // goog.scope
diff --git a/src/http/static/viz/2/goog/events/event.js b/src/http/static/viz/2/goog/events/event.js
deleted file mode 100644
index ee3b3af..0000000
--- a/src/http/static/viz/2/goog/events/event.js
+++ /dev/null
@@ -1,143 +0,0 @@
-// Copyright 2005 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview A base class for event objects.
- *
- */
-
-
-goog.provide('goog.events.Event');
-goog.provide('goog.events.EventLike');
-
-/**
- * goog.events.Event no longer depends on goog.Disposable. Keep requiring
- * goog.Disposable here to not break projects which assume this dependency.
- * @suppress {extraRequire}
- */
-goog.require('goog.Disposable');
-goog.require('goog.events.EventId');
-
-
-/**
- * A typedef for event like objects that are dispatchable via the
- * goog.events.dispatchEvent function. strings are treated as the type for a
- * goog.events.Event. Objects are treated as an extension of a new
- * goog.events.Event with the type property of the object being used as the type
- * of the Event.
- * @typedef {string|Object|goog.events.Event|goog.events.EventId}
- */
-goog.events.EventLike;
-
-
-
-/**
- * A base class for event objects, so that they can support preventDefault and
- * stopPropagation.
- *
- * @suppress {underscore} Several properties on this class are technically
- *     public, but referencing these properties outside this package is strongly
- *     discouraged.
- *
- * @param {string|!goog.events.EventId} type Event Type.
- * @param {Object=} opt_target Reference to the object that is the target of
- *     this event. It has to implement the {@code EventTarget} interface
- *     declared at {@link http://developer.mozilla.org/en/DOM/EventTarget}.
- * @constructor
- */
-goog.events.Event = function(type, opt_target) {
-  /**
-   * Event type.
-   * @type {string}
-   */
-  this.type = type instanceof goog.events.EventId ? String(type) : type;
-
-  /**
-   * TODO(tbreisacher): The type should probably be
-   * EventTarget|goog.events.EventTarget.
-   *
-   * Target of the event.
-   * @type {Object|undefined}
-   */
-  this.target = opt_target;
-
-  /**
-   * Object that had the listener attached.
-   * @type {Object|undefined}
-   */
-  this.currentTarget = this.target;
-
-  /**
-   * Whether to cancel the event in internal capture/bubble processing for IE.
-   * @type {boolean}
-   * @public
-   */
-  this.propagationStopped_ = false;
-
-  /**
-   * Whether the default action has been prevented.
-   * This is a property to match the W3C specification at
-   * {@link http://www.w3.org/TR/DOM-Level-3-Events/
-   * #events-event-type-defaultPrevented}.
-   * Must be treated as read-only outside the class.
-   * @type {boolean}
-   */
-  this.defaultPrevented = false;
-
-  /**
-   * Return value for in internal capture/bubble processing for IE.
-   * @type {boolean}
-   * @public
-   */
-  this.returnValue_ = true;
-};
-
-
-/**
- * Stops event propagation.
- */
-goog.events.Event.prototype.stopPropagation = function() {
-  this.propagationStopped_ = true;
-};
-
-
-/**
- * Prevents the default action, for example a link redirecting to a url.
- */
-goog.events.Event.prototype.preventDefault = function() {
-  this.defaultPrevented = true;
-  this.returnValue_ = false;
-};
-
-
-/**
- * Stops the propagation of the event. It is equivalent to
- * {@code e.stopPropagation()}, but can be used as the callback argument of
- * {@link goog.events.listen} without declaring another function.
- * @param {!goog.events.Event} e An event.
- */
-goog.events.Event.stopPropagation = function(e) {
-  e.stopPropagation();
-};
-
-
-/**
- * Prevents the default action. It is equivalent to
- * {@code e.preventDefault()}, but can be used as the callback argument of
- * {@link goog.events.listen} without declaring another function.
- * @param {!goog.events.Event} e An event.
- */
-goog.events.Event.preventDefault = function(e) {
-  e.preventDefault();
-};
diff --git a/src/http/static/viz/2/goog/events/eventid.js b/src/http/static/viz/2/goog/events/eventid.js
deleted file mode 100644
index 9ff9e40..0000000
--- a/src/http/static/viz/2/goog/events/eventid.js
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright 2013 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-goog.provide('goog.events.EventId');
-
-
-
-/**
- * A templated class that is used when registering for events. Typical usage:
- *
- *    /** @type {goog.events.EventId<MyEventObj>} *\
- *    var myEventId = new goog.events.EventId(
- *        goog.events.getUniqueId(('someEvent'));
- *
- *    // No need to cast or declare here since the compiler knows the
- *    // correct type of 'evt' (MyEventObj).
- *    something.listen(myEventId, function(evt) {});
- *
- * @param {string} eventId
- * @template T
- * @constructor
- * @struct
- * @final
- */
-goog.events.EventId = function(eventId) {
-  /** @const */ this.id = eventId;
-};
-
-
-/**
- * @override
- */
-goog.events.EventId.prototype.toString = function() {
-  return this.id;
-};
diff --git a/src/http/static/viz/2/goog/events/events.js b/src/http/static/viz/2/goog/events/events.js
deleted file mode 100644
index 2787340..0000000
--- a/src/http/static/viz/2/goog/events/events.js
+++ /dev/null
@@ -1,1003 +0,0 @@
-// Copyright 2005 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview An event manager for both native browser event
- * targets and custom JavaScript event targets
- * ({@code goog.events.Listenable}). This provides an abstraction
- * over browsers' event systems.
- *
- * It also provides a simulation of W3C event model's capture phase in
- * Internet Explorer (IE 8 and below). Caveat: the simulation does not
- * interact well with listeners registered directly on the elements
- * (bypassing goog.events) or even with listeners registered via
- * goog.events in a separate JS binary. In these cases, we provide
- * no ordering guarantees.
- *
- * The listeners will receive a "patched" event object. Such event object
- * contains normalized values for certain event properties that differs in
- * different browsers.
- *
- * Example usage:
- * <pre>
- * goog.events.listen(myNode, 'click', function(e) { alert('woo') });
- * goog.events.listen(myNode, 'mouseover', mouseHandler, true);
- * goog.events.unlisten(myNode, 'mouseover', mouseHandler, true);
- * goog.events.removeAll(myNode);
- * </pre>
- *
- *                                            in IE and event object patching]
- * @author arv@google.com (Erik Arvidsson)
- *
- * @see ../demos/events.html
- * @see ../demos/event-propagation.html
- * @see ../demos/stopevent.html
- */
-
-// IMPLEMENTATION NOTES:
-// goog.events stores an auxiliary data structure on each EventTarget
-// source being listened on. This allows us to take advantage of GC,
-// having the data structure GC'd when the EventTarget is GC'd. This
-// GC behavior is equivalent to using W3C DOM Events directly.
-
-goog.provide('goog.events');
-goog.provide('goog.events.CaptureSimulationMode');
-goog.provide('goog.events.Key');
-goog.provide('goog.events.ListenableType');
-
-goog.require('goog.asserts');
-goog.require('goog.debug.entryPointRegistry');
-goog.require('goog.events.BrowserEvent');
-goog.require('goog.events.BrowserFeature');
-goog.require('goog.events.Listenable');
-goog.require('goog.events.ListenerMap');
-
-goog.forwardDeclare('goog.debug.ErrorHandler');
-goog.forwardDeclare('goog.events.EventWrapper');
-
-
-/**
- * @typedef {number|goog.events.ListenableKey}
- */
-goog.events.Key;
-
-
-/**
- * @typedef {EventTarget|goog.events.Listenable}
- */
-goog.events.ListenableType;
-
-
-/**
- * Property name on a native event target for the listener map
- * associated with the event target.
- * @private @const {string}
- */
-goog.events.LISTENER_MAP_PROP_ = 'closure_lm_' + ((Math.random() * 1e6) | 0);
-
-
-/**
- * String used to prepend to IE event types.
- * @const
- * @private
- */
-goog.events.onString_ = 'on';
-
-
-/**
- * Map of computed "on<eventname>" strings for IE event types. Caching
- * this removes an extra object allocation in goog.events.listen which
- * improves IE6 performance.
- * @const
- * @dict
- * @private
- */
-goog.events.onStringMap_ = {};
-
-
-/**
- * @enum {number} Different capture simulation mode for IE8-.
- */
-goog.events.CaptureSimulationMode = {
-  /**
-   * Does not perform capture simulation. Will asserts in IE8- when you
-   * add capture listeners.
-   */
-  OFF_AND_FAIL: 0,
-
-  /**
-   * Does not perform capture simulation, silently ignore capture
-   * listeners.
-   */
-  OFF_AND_SILENT: 1,
-
-  /**
-   * Performs capture simulation.
-   */
-  ON: 2
-};
-
-
-/**
- * @define {number} The capture simulation mode for IE8-. By default,
- *     this is ON.
- */
-goog.define('goog.events.CAPTURE_SIMULATION_MODE', 2);
-
-
-/**
- * Estimated count of total native listeners.
- * @private {number}
- */
-goog.events.listenerCountEstimate_ = 0;
-
-
-/**
- * Adds an event listener for a specific event on a native event
- * target (such as a DOM element) or an object that has implemented
- * {@link goog.events.Listenable}. A listener can only be added once
- * to an object and if it is added again the key for the listener is
- * returned. Note that if the existing listener is a one-off listener
- * (registered via listenOnce), it will no longer be a one-off
- * listener after a call to listen().
- *
- * @param {EventTarget|goog.events.Listenable} src The node to listen
- *     to events on.
- * @param {string|Array<string>|
- *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}
- *     type Event type or array of event types.
- * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(?):?}|null}
- *     listener Callback method, or an object with a handleEvent function.
- *     WARNING: passing an Object is now softly deprecated.
- * @param {(boolean|!AddEventListenerOptions)=} opt_options
- * @param {T=} opt_handler Element in whose scope to call the listener.
- * @return {goog.events.Key} Unique key for the listener.
- * @template T,EVENTOBJ
- */
-goog.events.listen = function(src, type, listener, opt_options, opt_handler) {
-  if (opt_options && opt_options.once) {
-    return goog.events.listenOnce(
-        src, type, listener, opt_options, opt_handler);
-  }
-  if (goog.isArray(type)) {
-    for (var i = 0; i < type.length; i++) {
-      goog.events.listen(src, type[i], listener, opt_options, opt_handler);
-    }
-    return null;
-  }
-
-  listener = goog.events.wrapListener(listener);
-  if (goog.events.Listenable.isImplementedBy(src)) {
-    var capture =
-        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;
-    return src.listen(
-        /** @type {string|!goog.events.EventId} */ (type), listener, capture,
-        opt_handler);
-  } else {
-    return goog.events.listen_(
-        /** @type {!EventTarget} */ (src), type, listener,
-        /* callOnce */ false, opt_options, opt_handler);
-  }
-};
-
-
-/**
- * Adds an event listener for a specific event on a native event
- * target. A listener can only be added once to an object and if it
- * is added again the key for the listener is returned.
- *
- * Note that a one-off listener will not change an existing listener,
- * if any. On the other hand a normal listener will change existing
- * one-off listener to become a normal listener.
- *
- * @param {EventTarget} src The node to listen to events on.
- * @param {string|?goog.events.EventId<EVENTOBJ>} type Event type.
- * @param {!Function} listener Callback function.
- * @param {boolean} callOnce Whether the listener is a one-off
- *     listener or otherwise.
- * @param {(boolean|!AddEventListenerOptions)=} opt_options
- * @param {Object=} opt_handler Element in whose scope to call the listener.
- * @return {goog.events.ListenableKey} Unique key for the listener.
- * @template EVENTOBJ
- * @private
- */
-goog.events.listen_ = function(
-    src, type, listener, callOnce, opt_options, opt_handler) {
-  if (!type) {
-    throw Error('Invalid event type');
-  }
-
-  var capture =
-      goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;
-  if (capture && !goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT) {
-    if (goog.events.CAPTURE_SIMULATION_MODE ==
-        goog.events.CaptureSimulationMode.OFF_AND_FAIL) {
-      goog.asserts.fail('Can not register capture listener in IE8-.');
-      return null;
-    } else if (
-        goog.events.CAPTURE_SIMULATION_MODE ==
-        goog.events.CaptureSimulationMode.OFF_AND_SILENT) {
-      return null;
-    }
-  }
-
-  var listenerMap = goog.events.getListenerMap_(src);
-  if (!listenerMap) {
-    src[goog.events.LISTENER_MAP_PROP_] = listenerMap =
-        new goog.events.ListenerMap(src);
-  }
-
-  var listenerObj = /** @type {goog.events.Listener} */ (
-      listenerMap.add(type, listener, callOnce, capture, opt_handler));
-
-  // If the listenerObj already has a proxy, it has been set up
-  // previously. We simply return.
-  if (listenerObj.proxy) {
-    return listenerObj;
-  }
-
-  var proxy = goog.events.getProxy();
-  listenerObj.proxy = proxy;
-
-  proxy.src = src;
-  proxy.listener = listenerObj;
-
-  // Attach the proxy through the browser's API
-  if (src.addEventListener) {
-    // Don't pass an object as `capture` if the browser doesn't support that.
-    if (!goog.events.BrowserFeature.PASSIVE_EVENTS) {
-      opt_options = capture;
-    }
-    // Don't break tests that expect a boolean.
-    if (opt_options === undefined) opt_options = false;
-    src.addEventListener(type.toString(), proxy, opt_options);
-  } else if (src.attachEvent) {
-    // The else if above used to be an unconditional else. It would call
-    // exception on IE11, spoiling the day of some callers. The previous
-    // incarnation of this code, from 2007, indicates that it replaced an
-    // earlier still version that caused excess allocations on IE6.
-    src.attachEvent(goog.events.getOnString_(type.toString()), proxy);
-  } else {
-    throw Error('addEventListener and attachEvent are unavailable.');
-  }
-
-  goog.events.listenerCountEstimate_++;
-  return listenerObj;
-};
-
-
-/**
- * Helper function for returning a proxy function.
- * @return {!Function} A new or reused function object.
- */
-goog.events.getProxy = function() {
-  var proxyCallbackFunction = goog.events.handleBrowserEvent_;
-  // Use a local var f to prevent one allocation.
-  var f =
-      goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT ? function(eventObject) {
-        return proxyCallbackFunction.call(f.src, f.listener, eventObject);
-      } : function(eventObject) {
-        var v = proxyCallbackFunction.call(f.src, f.listener, eventObject);
-        // NOTE(chrishenry): In IE, we hack in a capture phase. However, if
-        // there is inline event handler which tries to prevent default (for
-        // example <a href="..." onclick="return false">...</a>) in a
-        // descendant element, the prevent default will be overridden
-        // by this listener if this listener were to return true. Hence, we
-        // return undefined.
-        if (!v) return v;
-      };
-  return f;
-};
-
-
-/**
- * Adds an event listener for a specific event on a native event
- * target (such as a DOM element) or an object that has implemented
- * {@link goog.events.Listenable}. After the event has fired the event
- * listener is removed from the target.
- *
- * If an existing listener already exists, listenOnce will do
- * nothing. In particular, if the listener was previously registered
- * via listen(), listenOnce() will not turn the listener into a
- * one-off listener. Similarly, if there is already an existing
- * one-off listener, listenOnce does not modify the listeners (it is
- * still a once listener).
- *
- * @param {EventTarget|goog.events.Listenable} src The node to listen
- *     to events on.
- * @param {string|Array<string>|
- *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}
- *     type Event type or array of event types.
- * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(?):?}|null}
- *     listener Callback method.
- * @param {(boolean|!AddEventListenerOptions)=} opt_options
- * @param {T=} opt_handler Element in whose scope to call the listener.
- * @return {goog.events.Key} Unique key for the listener.
- * @template T,EVENTOBJ
- */
-goog.events.listenOnce = function(
-    src, type, listener, opt_options, opt_handler) {
-  if (goog.isArray(type)) {
-    for (var i = 0; i < type.length; i++) {
-      goog.events.listenOnce(src, type[i], listener, opt_options, opt_handler);
-    }
-    return null;
-  }
-
-  listener = goog.events.wrapListener(listener);
-  if (goog.events.Listenable.isImplementedBy(src)) {
-    var capture =
-        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;
-    return src.listenOnce(
-        /** @type {string|!goog.events.EventId} */ (type), listener, capture,
-        opt_handler);
-  } else {
-    return goog.events.listen_(
-        /** @type {!EventTarget} */ (src), type, listener,
-        /* callOnce */ true, opt_options, opt_handler);
-  }
-};
-
-
-/**
- * Adds an event listener with a specific event wrapper on a DOM Node or an
- * object that has implemented {@link goog.events.Listenable}. A listener can
- * only be added once to an object.
- *
- * @param {EventTarget|goog.events.Listenable} src The target to
- *     listen to events on.
- * @param {goog.events.EventWrapper} wrapper Event wrapper to use.
- * @param {function(this:T, ?):?|{handleEvent:function(?):?}|null} listener
- *     Callback method, or an object with a handleEvent function.
- * @param {boolean=} opt_capt Whether to fire in capture phase (defaults to
- *     false).
- * @param {T=} opt_handler Element in whose scope to call the listener.
- * @template T
- */
-goog.events.listenWithWrapper = function(
-    src, wrapper, listener, opt_capt, opt_handler) {
-  wrapper.listen(src, listener, opt_capt, opt_handler);
-};
-
-
-/**
- * Removes an event listener which was added with listen().
- *
- * @param {EventTarget|goog.events.Listenable} src The target to stop
- *     listening to events on.
- * @param {string|Array<string>|
- *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}
- *     type Event type or array of event types to unlisten to.
- * @param {function(?):?|{handleEvent:function(?):?}|null} listener The
- *     listener function to remove.
- * @param {(boolean|!EventListenerOptions)=} opt_options
- *     whether the listener is fired during the capture or bubble phase of the
- *     event.
- * @param {Object=} opt_handler Element in whose scope to call the listener.
- * @return {?boolean} indicating whether the listener was there to remove.
- * @template EVENTOBJ
- */
-goog.events.unlisten = function(src, type, listener, opt_options, opt_handler) {
-  if (goog.isArray(type)) {
-    for (var i = 0; i < type.length; i++) {
-      goog.events.unlisten(src, type[i], listener, opt_options, opt_handler);
-    }
-    return null;
-  }
-  var capture =
-      goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;
-
-  listener = goog.events.wrapListener(listener);
-  if (goog.events.Listenable.isImplementedBy(src)) {
-    return src.unlisten(
-        /** @type {string|!goog.events.EventId} */ (type), listener, capture,
-        opt_handler);
-  }
-
-  if (!src) {
-    // TODO(chrishenry): We should tighten the API to only accept
-    // non-null objects, or add an assertion here.
-    return false;
-  }
-
-  var listenerMap = goog.events.getListenerMap_(
-      /** @type {!EventTarget} */ (src));
-  if (listenerMap) {
-    var listenerObj = listenerMap.getListener(
-        /** @type {string|!goog.events.EventId} */ (type), listener, capture,
-        opt_handler);
-    if (listenerObj) {
-      return goog.events.unlistenByKey(listenerObj);
-    }
-  }
-
-  return false;
-};
-
-
-/**
- * Removes an event listener which was added with listen() by the key
- * returned by listen().
- *
- * @param {goog.events.Key} key The key returned by listen() for this
- *     event listener.
- * @return {boolean} indicating whether the listener was there to remove.
- */
-goog.events.unlistenByKey = function(key) {
-  // TODO(chrishenry): Remove this check when tests that rely on this
-  // are fixed.
-  if (goog.isNumber(key)) {
-    return false;
-  }
-
-  var listener = key;
-  if (!listener || listener.removed) {
-    return false;
-  }
-
-  var src = listener.src;
-  if (goog.events.Listenable.isImplementedBy(src)) {
-    return /** @type {!goog.events.Listenable} */ (src).unlistenByKey(listener);
-  }
-
-  var type = listener.type;
-  var proxy = listener.proxy;
-  if (src.removeEventListener) {
-    src.removeEventListener(type, proxy, listener.capture);
-  } else if (src.detachEvent) {
-    src.detachEvent(goog.events.getOnString_(type), proxy);
-  }
-  goog.events.listenerCountEstimate_--;
-
-  var listenerMap = goog.events.getListenerMap_(
-      /** @type {!EventTarget} */ (src));
-  // TODO(chrishenry): Try to remove this conditional and execute the
-  // first branch always. This should be safe.
-  if (listenerMap) {
-    listenerMap.removeByKey(listener);
-    if (listenerMap.getTypeCount() == 0) {
-      // Null the src, just because this is simple to do (and useful
-      // for IE <= 7).
-      listenerMap.src = null;
-      // We don't use delete here because IE does not allow delete
-      // on a window object.
-      src[goog.events.LISTENER_MAP_PROP_] = null;
-    }
-  } else {
-    /** @type {!goog.events.Listener} */ (listener).markAsRemoved();
-  }
-
-  return true;
-};
-
-
-/**
- * Removes an event listener which was added with listenWithWrapper().
- *
- * @param {EventTarget|goog.events.Listenable} src The target to stop
- *     listening to events on.
- * @param {goog.events.EventWrapper} wrapper Event wrapper to use.
- * @param {function(?):?|{handleEvent:function(?):?}|null} listener The
- *     listener function to remove.
- * @param {boolean=} opt_capt In DOM-compliant browsers, this determines
- *     whether the listener is fired during the capture or bubble phase of the
- *     event.
- * @param {Object=} opt_handler Element in whose scope to call the listener.
- */
-goog.events.unlistenWithWrapper = function(
-    src, wrapper, listener, opt_capt, opt_handler) {
-  wrapper.unlisten(src, listener, opt_capt, opt_handler);
-};
-
-
-/**
- * Removes all listeners from an object. You can also optionally
- * remove listeners of a particular type.
- *
- * @param {Object|undefined} obj Object to remove listeners from. Must be an
- *     EventTarget or a goog.events.Listenable.
- * @param {string|!goog.events.EventId=} opt_type Type of event to remove.
- *     Default is all types.
- * @return {number} Number of listeners removed.
- */
-goog.events.removeAll = function(obj, opt_type) {
-  // TODO(chrishenry): Change the type of obj to
-  // (!EventTarget|!goog.events.Listenable).
-
-  if (!obj) {
-    return 0;
-  }
-
-  if (goog.events.Listenable.isImplementedBy(obj)) {
-    return /** @type {?} */ (obj).removeAllListeners(opt_type);
-  }
-
-  var listenerMap = goog.events.getListenerMap_(
-      /** @type {!EventTarget} */ (obj));
-  if (!listenerMap) {
-    return 0;
-  }
-
-  var count = 0;
-  var typeStr = opt_type && opt_type.toString();
-  for (var type in listenerMap.listeners) {
-    if (!typeStr || type == typeStr) {
-      // Clone so that we don't need to worry about unlistenByKey
-      // changing the content of the ListenerMap.
-      var listeners = listenerMap.listeners[type].concat();
-      for (var i = 0; i < listeners.length; ++i) {
-        if (goog.events.unlistenByKey(listeners[i])) {
-          ++count;
-        }
-      }
-    }
-  }
-  return count;
-};
-
-
-/**
- * Gets the listeners for a given object, type and capture phase.
- *
- * @param {Object} obj Object to get listeners for.
- * @param {string|!goog.events.EventId} type Event type.
- * @param {boolean} capture Capture phase?.
- * @return {Array<!goog.events.Listener>} Array of listener objects.
- */
-goog.events.getListeners = function(obj, type, capture) {
-  if (goog.events.Listenable.isImplementedBy(obj)) {
-    return /** @type {!goog.events.Listenable} */ (obj).getListeners(
-        type, capture);
-  } else {
-    if (!obj) {
-      // TODO(chrishenry): We should tighten the API to accept
-      // !EventTarget|goog.events.Listenable, and add an assertion here.
-      return [];
-    }
-
-    var listenerMap = goog.events.getListenerMap_(
-        /** @type {!EventTarget} */ (obj));
-    return listenerMap ? listenerMap.getListeners(type, capture) : [];
-  }
-};
-
-
-/**
- * Gets the goog.events.Listener for the event or null if no such listener is
- * in use.
- *
- * @param {EventTarget|goog.events.Listenable} src The target from
- *     which to get listeners.
- * @param {?string|!goog.events.EventId<EVENTOBJ>} type The type of the event.
- * @param {function(EVENTOBJ):?|{handleEvent:function(?):?}|null} listener The
- *     listener function to get.
- * @param {boolean=} opt_capt In DOM-compliant browsers, this determines
- *                            whether the listener is fired during the
- *                            capture or bubble phase of the event.
- * @param {Object=} opt_handler Element in whose scope to call the listener.
- * @return {goog.events.ListenableKey} the found listener or null if not found.
- * @template EVENTOBJ
- */
-goog.events.getListener = function(src, type, listener, opt_capt, opt_handler) {
-  // TODO(chrishenry): Change type from ?string to string, or add assertion.
-  type = /** @type {string} */ (type);
-  listener = goog.events.wrapListener(listener);
-  var capture = !!opt_capt;
-  if (goog.events.Listenable.isImplementedBy(src)) {
-    return src.getListener(type, listener, capture, opt_handler);
-  }
-
-  if (!src) {
-    // TODO(chrishenry): We should tighten the API to only accept
-    // non-null objects, or add an assertion here.
-    return null;
-  }
-
-  var listenerMap = goog.events.getListenerMap_(
-      /** @type {!EventTarget} */ (src));
-  if (listenerMap) {
-    return listenerMap.getListener(type, listener, capture, opt_handler);
-  }
-  return null;
-};
-
-
-/**
- * Returns whether an event target has any active listeners matching the
- * specified signature. If either the type or capture parameters are
- * unspecified, the function will match on the remaining criteria.
- *
- * @param {EventTarget|goog.events.Listenable} obj Target to get
- *     listeners for.
- * @param {string|!goog.events.EventId=} opt_type Event type.
- * @param {boolean=} opt_capture Whether to check for capture or bubble-phase
- *     listeners.
- * @return {boolean} Whether an event target has one or more listeners matching
- *     the requested type and/or capture phase.
- */
-goog.events.hasListener = function(obj, opt_type, opt_capture) {
-  if (goog.events.Listenable.isImplementedBy(obj)) {
-    return obj.hasListener(opt_type, opt_capture);
-  }
-
-  var listenerMap = goog.events.getListenerMap_(
-      /** @type {!EventTarget} */ (obj));
-  return !!listenerMap && listenerMap.hasListener(opt_type, opt_capture);
-};
-
-
-/**
- * Provides a nice string showing the normalized event objects public members
- * @param {Object} e Event Object.
- * @return {string} String of the public members of the normalized event object.
- */
-goog.events.expose = function(e) {
-  var str = [];
-  for (var key in e) {
-    if (e[key] && e[key].id) {
-      str.push(key + ' = ' + e[key] + ' (' + e[key].id + ')');
-    } else {
-      str.push(key + ' = ' + e[key]);
-    }
-  }
-  return str.join('\n');
-};
-
-
-/**
- * Returns a string with on prepended to the specified type. This is used for IE
- * which expects "on" to be prepended. This function caches the string in order
- * to avoid extra allocations in steady state.
- * @param {string} type Event type.
- * @return {string} The type string with 'on' prepended.
- * @private
- */
-goog.events.getOnString_ = function(type) {
-  if (type in goog.events.onStringMap_) {
-    return goog.events.onStringMap_[type];
-  }
-  return goog.events.onStringMap_[type] = goog.events.onString_ + type;
-};
-
-
-/**
- * Fires an object's listeners of a particular type and phase
- *
- * @param {Object} obj Object whose listeners to call.
- * @param {string|!goog.events.EventId} type Event type.
- * @param {boolean} capture Which event phase.
- * @param {Object} eventObject Event object to be passed to listener.
- * @return {boolean} True if all listeners returned true else false.
- */
-goog.events.fireListeners = function(obj, type, capture, eventObject) {
-  if (goog.events.Listenable.isImplementedBy(obj)) {
-    return /** @type {!goog.events.Listenable} */ (obj).fireListeners(
-        type, capture, eventObject);
-  }
-
-  return goog.events.fireListeners_(obj, type, capture, eventObject);
-};
-
-
-/**
- * Fires an object's listeners of a particular type and phase.
- * @param {Object} obj Object whose listeners to call.
- * @param {string|!goog.events.EventId} type Event type.
- * @param {boolean} capture Which event phase.
- * @param {Object} eventObject Event object to be passed to listener.
- * @return {boolean} True if all listeners returned true else false.
- * @private
- */
-goog.events.fireListeners_ = function(obj, type, capture, eventObject) {
-  /** @type {boolean} */
-  var retval = true;
-
-  var listenerMap = goog.events.getListenerMap_(
-      /** @type {EventTarget} */ (obj));
-  if (listenerMap) {
-    // TODO(chrishenry): Original code avoids array creation when there
-    // is no listener, so we do the same. If this optimization turns
-    // out to be not required, we can replace this with
-    // listenerMap.getListeners(type, capture) instead, which is simpler.
-    var listenerArray = listenerMap.listeners[type.toString()];
-    if (listenerArray) {
-      listenerArray = listenerArray.concat();
-      for (var i = 0; i < listenerArray.length; i++) {
-        var listener = listenerArray[i];
-        // We might not have a listener if the listener was removed.
-        if (listener && listener.capture == capture && !listener.removed) {
-          var result = goog.events.fireListener(listener, eventObject);
-          retval = retval && (result !== false);
-        }
-      }
-    }
-  }
-  return retval;
-};
-
-
-/**
- * Fires a listener with a set of arguments
- *
- * @param {goog.events.Listener} listener The listener object to call.
- * @param {Object} eventObject The event object to pass to the listener.
- * @return {*} Result of listener.
- */
-goog.events.fireListener = function(listener, eventObject) {
-  var listenerFn = listener.listener;
-  var listenerHandler = listener.handler || listener.src;
-
-  if (listener.callOnce) {
-    goog.events.unlistenByKey(listener);
-  }
-  return listenerFn.call(listenerHandler, eventObject);
-};
-
-
-/**
- * Gets the total number of listeners currently in the system.
- * @return {number} Number of listeners.
- * @deprecated This returns estimated count, now that Closure no longer
- * stores a central listener registry. We still return an estimation
- * to keep existing listener-related tests passing. In the near future,
- * this function will be removed.
- */
-goog.events.getTotalListenerCount = function() {
-  return goog.events.listenerCountEstimate_;
-};
-
-
-/**
- * Dispatches an event (or event like object) and calls all listeners
- * listening for events of this type. The type of the event is decided by the
- * type property on the event object.
- *
- * If any of the listeners returns false OR calls preventDefault then this
- * function will return false.  If one of the capture listeners calls
- * stopPropagation, then the bubble listeners won't fire.
- *
- * @param {goog.events.Listenable} src The event target.
- * @param {goog.events.EventLike} e Event object.
- * @return {boolean} If anyone called preventDefault on the event object (or
- *     if any of the handlers returns false) this will also return false.
- *     If there are no handlers, or if all handlers return true, this returns
- *     true.
- */
-goog.events.dispatchEvent = function(src, e) {
-  goog.asserts.assert(
-      goog.events.Listenable.isImplementedBy(src),
-      'Can not use goog.events.dispatchEvent with ' +
-          'non-goog.events.Listenable instance.');
-  return src.dispatchEvent(e);
-};
-
-
-/**
- * Installs exception protection for the browser event entry point using the
- * given error handler.
- *
- * @param {goog.debug.ErrorHandler} errorHandler Error handler with which to
- *     protect the entry point.
- */
-goog.events.protectBrowserEventEntryPoint = function(errorHandler) {
-  goog.events.handleBrowserEvent_ =
-      errorHandler.protectEntryPoint(goog.events.handleBrowserEvent_);
-};
-
-
-/**
- * Handles an event and dispatches it to the correct listeners. This
- * function is a proxy for the real listener the user specified.
- *
- * @param {goog.events.Listener} listener The listener object.
- * @param {Event=} opt_evt Optional event object that gets passed in via the
- *     native event handlers.
- * @return {*} Result of the event handler.
- * @this {EventTarget} The object or Element that fired the event.
- * @private
- */
-goog.events.handleBrowserEvent_ = function(listener, opt_evt) {
-  if (listener.removed) {
-    return true;
-  }
-
-  // Synthesize event propagation if the browser does not support W3C
-  // event model.
-  if (!goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT) {
-    var ieEvent = opt_evt ||
-        /** @type {Event} */ (goog.getObjectByName('window.event'));
-    var evt = new goog.events.BrowserEvent(ieEvent, this);
-    /** @type {*} */
-    var retval = true;
-
-    if (goog.events.CAPTURE_SIMULATION_MODE ==
-        goog.events.CaptureSimulationMode.ON) {
-      // If we have not marked this event yet, we should perform capture
-      // simulation.
-      if (!goog.events.isMarkedIeEvent_(ieEvent)) {
-        goog.events.markIeEvent_(ieEvent);
-
-        var ancestors = [];
-        for (var parent = evt.currentTarget; parent;
-             parent = parent.parentNode) {
-          ancestors.push(parent);
-        }
-
-        // Fire capture listeners.
-        var type = listener.type;
-        for (var i = ancestors.length - 1; !evt.propagationStopped_ && i >= 0;
-             i--) {
-          evt.currentTarget = ancestors[i];
-          var result =
-              goog.events.fireListeners_(ancestors[i], type, true, evt);
-          retval = retval && result;
-        }
-
-        // Fire bubble listeners.
-        //
-        // We can technically rely on IE to perform bubble event
-        // propagation. However, it turns out that IE fires events in
-        // opposite order of attachEvent registration, which broke
-        // some code and tests that rely on the order. (While W3C DOM
-        // Level 2 Events TR leaves the event ordering unspecified,
-        // modern browsers and W3C DOM Level 3 Events Working Draft
-        // actually specify the order as the registration order.)
-        for (var i = 0; !evt.propagationStopped_ && i < ancestors.length; i++) {
-          evt.currentTarget = ancestors[i];
-          var result =
-              goog.events.fireListeners_(ancestors[i], type, false, evt);
-          retval = retval && result;
-        }
-      }
-    } else {
-      retval = goog.events.fireListener(listener, evt);
-    }
-    return retval;
-  }
-
-  // Otherwise, simply fire the listener.
-  return goog.events.fireListener(
-      listener, new goog.events.BrowserEvent(opt_evt, this));
-};
-
-
-/**
- * This is used to mark the IE event object so we do not do the Closure pass
- * twice for a bubbling event.
- * @param {Event} e The IE browser event.
- * @private
- */
-goog.events.markIeEvent_ = function(e) {
-  // Only the keyCode and the returnValue can be changed. We use keyCode for
-  // non keyboard events.
-  // event.returnValue is a bit more tricky. It is undefined by default. A
-  // boolean false prevents the default action. In a window.onbeforeunload and
-  // the returnValue is non undefined it will be alerted. However, we will only
-  // modify the returnValue for keyboard events. We can get a problem if non
-  // closure events sets the keyCode or the returnValue
-
-  var useReturnValue = false;
-
-  if (e.keyCode == 0) {
-    // We cannot change the keyCode in case that srcElement is input[type=file].
-    // We could test that that is the case but that would allocate 3 objects.
-    // If we use try/catch we will only allocate extra objects in the case of a
-    // failure.
-
-    try {
-      e.keyCode = -1;
-      return;
-    } catch (ex) {
-      useReturnValue = true;
-    }
-  }
-
-  if (useReturnValue ||
-      /** @type {boolean|undefined} */ (e.returnValue) == undefined) {
-    e.returnValue = true;
-  }
-};
-
-
-/**
- * This is used to check if an IE event has already been handled by the Closure
- * system so we do not do the Closure pass twice for a bubbling event.
- * @param {Event} e  The IE browser event.
- * @return {boolean} True if the event object has been marked.
- * @private
- */
-goog.events.isMarkedIeEvent_ = function(e) {
-  return e.keyCode < 0 || e.returnValue != undefined;
-};
-
-
-/**
- * Counter to create unique event ids.
- * @private {number}
- */
-goog.events.uniqueIdCounter_ = 0;
-
-
-/**
- * Creates a unique event id.
- *
- * @param {string} identifier The identifier.
- * @return {string} A unique identifier.
- * @idGenerator {unique}
- */
-goog.events.getUniqueId = function(identifier) {
-  return identifier + '_' + goog.events.uniqueIdCounter_++;
-};
-
-
-/**
- * @param {EventTarget} src The source object.
- * @return {goog.events.ListenerMap} A listener map for the given
- *     source object, or null if none exists.
- * @private
- */
-goog.events.getListenerMap_ = function(src) {
-  var listenerMap = src[goog.events.LISTENER_MAP_PROP_];
-  // IE serializes the property as well (e.g. when serializing outer
-  // HTML). So we must check that the value is of the correct type.
-  return listenerMap instanceof goog.events.ListenerMap ? listenerMap : null;
-};
-
-
-/**
- * Expando property for listener function wrapper for Object with
- * handleEvent.
- * @private @const {string}
- */
-goog.events.LISTENER_WRAPPER_PROP_ =
-    '__closure_events_fn_' + ((Math.random() * 1e9) >>> 0);
-
-
-/**
- * @param {Object|Function} listener The listener function or an
- *     object that contains handleEvent method.
- * @return {!Function} Either the original function or a function that
- *     calls obj.handleEvent. If the same listener is passed to this
- *     function more than once, the same function is guaranteed to be
- *     returned.
- */
-goog.events.wrapListener = function(listener) {
-  goog.asserts.assert(listener, 'Listener can not be null.');
-
-  if (goog.isFunction(listener)) {
-    return listener;
-  }
-
-  goog.asserts.assert(
-      listener.handleEvent, 'An object listener must have handleEvent method.');
-  if (!listener[goog.events.LISTENER_WRAPPER_PROP_]) {
-    listener[goog.events.LISTENER_WRAPPER_PROP_] = function(e) {
-      return /** @type {?} */ (listener).handleEvent(e);
-    };
-  }
-  return listener[goog.events.LISTENER_WRAPPER_PROP_];
-};
-
-
-// Register the browser event handler as an entry point, so that
-// it can be monitored for exception handling, etc.
-goog.debug.entryPointRegistry.register(
-    /**
-     * @param {function(!Function): !Function} transformer The transforming
-     *     function.
-     */
-    function(transformer) {
-      goog.events.handleBrowserEvent_ =
-          transformer(goog.events.handleBrowserEvent_);
-    });
diff --git a/src/http/static/viz/2/goog/events/eventtype.js b/src/http/static/viz/2/goog/events/eventtype.js
deleted file mode 100644
index 7d991ea..0000000
--- a/src/http/static/viz/2/goog/events/eventtype.js
+++ /dev/null
@@ -1,295 +0,0 @@
-// Copyright 2010 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Event Types.
- *
- * @author arv@google.com (Erik Arvidsson)
- */
-
-
-goog.provide('goog.events.EventType');
-
-goog.require('goog.userAgent');
-
-
-/**
- * Returns a prefixed event name for the current browser.
- * @param {string} eventName The name of the event.
- * @return {string} The prefixed event name.
- * @suppress {missingRequire|missingProvide}
- * @private
- */
-goog.events.getVendorPrefixedName_ = function(eventName) {
-  return goog.userAgent.WEBKIT ?
-      'webkit' + eventName :
-      (goog.userAgent.OPERA ? 'o' + eventName.toLowerCase() :
-                              eventName.toLowerCase());
-};
-
-
-/**
- * Constants for event names.
- * @enum {string}
- */
-goog.events.EventType = {
-  // Mouse events
-  CLICK: 'click',
-  RIGHTCLICK: 'rightclick',
-  DBLCLICK: 'dblclick',
-  MOUSEDOWN: 'mousedown',
-  MOUSEUP: 'mouseup',
-  MOUSEOVER: 'mouseover',
-  MOUSEOUT: 'mouseout',
-  MOUSEMOVE: 'mousemove',
-  MOUSEENTER: 'mouseenter',
-  MOUSELEAVE: 'mouseleave',
-
-  // Selection events.
-  // https://www.w3.org/TR/selection-api/
-  SELECTIONCHANGE: 'selectionchange',
-  SELECTSTART: 'selectstart',  // IE, Safari, Chrome
-
-  // Wheel events
-  // http://www.w3.org/TR/DOM-Level-3-Events/#events-wheelevents
-  WHEEL: 'wheel',
-
-  // Key events
-  KEYPRESS: 'keypress',
-  KEYDOWN: 'keydown',
-  KEYUP: 'keyup',
-
-  // Focus
-  BLUR: 'blur',
-  FOCUS: 'focus',
-  DEACTIVATE: 'deactivate',  // IE only
-  // NOTE: The following two events are not stable in cross-browser usage.
-  //     WebKit and Opera implement DOMFocusIn/Out.
-  //     IE implements focusin/out.
-  //     Gecko implements neither see bug at
-  //     https://bugzilla.mozilla.org/show_bug.cgi?id=396927.
-  // The DOM Events Level 3 Draft deprecates DOMFocusIn in favor of focusin:
-  //     http://dev.w3.org/2006/webapi/DOM-Level-3-Events/html/DOM3-Events.html
-  // You can use FOCUS in Capture phase until implementations converge.
-  FOCUSIN: goog.userAgent.IE ? 'focusin' : 'DOMFocusIn',
-  FOCUSOUT: goog.userAgent.IE ? 'focusout' : 'DOMFocusOut',
-
-  // Forms
-  CHANGE: 'change',
-  RESET: 'reset',
-  SELECT: 'select',
-  SUBMIT: 'submit',
-  INPUT: 'input',
-  PROPERTYCHANGE: 'propertychange',  // IE only
-
-  // Drag and drop
-  DRAGSTART: 'dragstart',
-  DRAG: 'drag',
-  DRAGENTER: 'dragenter',
-  DRAGOVER: 'dragover',
-  DRAGLEAVE: 'dragleave',
-  DROP: 'drop',
-  DRAGEND: 'dragend',
-
-  // Touch events
-  // Note that other touch events exist, but we should follow the W3C list here.
-  // http://www.w3.org/TR/touch-events/#list-of-touchevent-types
-  TOUCHSTART: 'touchstart',
-  TOUCHMOVE: 'touchmove',
-  TOUCHEND: 'touchend',
-  TOUCHCANCEL: 'touchcancel',
-
-  // Misc
-  BEFOREUNLOAD: 'beforeunload',
-  CONSOLEMESSAGE: 'consolemessage',
-  CONTEXTMENU: 'contextmenu',
-  DEVICEMOTION: 'devicemotion',
-  DEVICEORIENTATION: 'deviceorientation',
-  DOMCONTENTLOADED: 'DOMContentLoaded',
-  ERROR: 'error',
-  HELP: 'help',
-  LOAD: 'load',
-  LOSECAPTURE: 'losecapture',
-  ORIENTATIONCHANGE: 'orientationchange',
-  READYSTATECHANGE: 'readystatechange',
-  RESIZE: 'resize',
-  SCROLL: 'scroll',
-  UNLOAD: 'unload',
-
-  // Media events
-  CANPLAY: 'canplay',
-  CANPLAYTHROUGH: 'canplaythrough',
-  DURATIONCHANGE: 'durationchange',
-  EMPTIED: 'emptied',
-  ENDED: 'ended',
-  LOADEDDATA: 'loadeddata',
-  LOADEDMETADATA: 'loadedmetadata',
-  PAUSE: 'pause',
-  PLAY: 'play',
-  PLAYING: 'playing',
-  RATECHANGE: 'ratechange',
-  SEEKED: 'seeked',
-  SEEKING: 'seeking',
-  STALLED: 'stalled',
-  SUSPEND: 'suspend',
-  TIMEUPDATE: 'timeupdate',
-  VOLUMECHANGE: 'volumechange',
-  WAITING: 'waiting',
-
-  // Media Source Extensions events
-  // https://www.w3.org/TR/media-source/#mediasource-events
-  SOURCEOPEN: 'sourceopen',
-  SOURCEENDED: 'sourceended',
-  SOURCECLOSED: 'sourceclosed',
-  // https://www.w3.org/TR/media-source/#sourcebuffer-events
-  ABORT: 'abort',
-  UPDATE: 'update',
-  UPDATESTART: 'updatestart',
-  UPDATEEND: 'updateend',
-
-  // HTML 5 History events
-  // See http://www.w3.org/TR/html5/browsers.html#event-definitions-0
-  HASHCHANGE: 'hashchange',
-  PAGEHIDE: 'pagehide',
-  PAGESHOW: 'pageshow',
-  POPSTATE: 'popstate',
-
-  // Copy and Paste
-  // Support is limited. Make sure it works on your favorite browser
-  // before using.
-  // http://www.quirksmode.org/dom/events/cutcopypaste.html
-  COPY: 'copy',
-  PASTE: 'paste',
-  CUT: 'cut',
-  BEFORECOPY: 'beforecopy',
-  BEFORECUT: 'beforecut',
-  BEFOREPASTE: 'beforepaste',
-
-  // HTML5 online/offline events.
-  // http://www.w3.org/TR/offline-webapps/#related
-  ONLINE: 'online',
-  OFFLINE: 'offline',
-
-  // HTML 5 worker events
-  MESSAGE: 'message',
-  CONNECT: 'connect',
-
-  // Service Worker Events - ServiceWorkerGlobalScope context
-  // See https://w3c.github.io/ServiceWorker/#execution-context-events
-  // Note: message event defined in worker events section
-  INSTALL: 'install',
-  ACTIVATE: 'activate',
-  FETCH: 'fetch',
-  FOREIGNFETCH: 'foreignfetch',
-  MESSAGEERROR: 'messageerror',
-
-  // Service Worker Events - Document context
-  // See https://w3c.github.io/ServiceWorker/#document-context-events
-  STATECHANGE: 'statechange',
-  UPDATEFOUND: 'updatefound',
-  CONTROLLERCHANGE: 'controllerchange',
-
-  // CSS animation events.
-  /** @suppress {missingRequire} */
-  ANIMATIONSTART: goog.events.getVendorPrefixedName_('AnimationStart'),
-  /** @suppress {missingRequire} */
-  ANIMATIONEND: goog.events.getVendorPrefixedName_('AnimationEnd'),
-  /** @suppress {missingRequire} */
-  ANIMATIONITERATION: goog.events.getVendorPrefixedName_('AnimationIteration'),
-
-  // CSS transition events. Based on the browser support described at:
-  // https://developer.mozilla.org/en/css/css_transitions#Browser_compatibility
-  /** @suppress {missingRequire} */
-  TRANSITIONEND: goog.events.getVendorPrefixedName_('TransitionEnd'),
-
-  // W3C Pointer Events
-  // http://www.w3.org/TR/pointerevents/
-  POINTERDOWN: 'pointerdown',
-  POINTERUP: 'pointerup',
-  POINTERCANCEL: 'pointercancel',
-  POINTERMOVE: 'pointermove',
-  POINTEROVER: 'pointerover',
-  POINTEROUT: 'pointerout',
-  POINTERENTER: 'pointerenter',
-  POINTERLEAVE: 'pointerleave',
-  GOTPOINTERCAPTURE: 'gotpointercapture',
-  LOSTPOINTERCAPTURE: 'lostpointercapture',
-
-  // IE specific events.
-  // See http://msdn.microsoft.com/en-us/library/ie/hh772103(v=vs.85).aspx
-  // Note: these events will be supplanted in IE11.
-  MSGESTURECHANGE: 'MSGestureChange',
-  MSGESTUREEND: 'MSGestureEnd',
-  MSGESTUREHOLD: 'MSGestureHold',
-  MSGESTURESTART: 'MSGestureStart',
-  MSGESTURETAP: 'MSGestureTap',
-  MSGOTPOINTERCAPTURE: 'MSGotPointerCapture',
-  MSINERTIASTART: 'MSInertiaStart',
-  MSLOSTPOINTERCAPTURE: 'MSLostPointerCapture',
-  MSPOINTERCANCEL: 'MSPointerCancel',
-  MSPOINTERDOWN: 'MSPointerDown',
-  MSPOINTERENTER: 'MSPointerEnter',
-  MSPOINTERHOVER: 'MSPointerHover',
-  MSPOINTERLEAVE: 'MSPointerLeave',
-  MSPOINTERMOVE: 'MSPointerMove',
-  MSPOINTEROUT: 'MSPointerOut',
-  MSPOINTEROVER: 'MSPointerOver',
-  MSPOINTERUP: 'MSPointerUp',
-
-  // Native IMEs/input tools events.
-  TEXT: 'text',
-  // The textInput event is supported in IE9+, but only in lower case. All other
-  // browsers use the camel-case event name.
-  TEXTINPUT: goog.userAgent.IE ? 'textinput' : 'textInput',
-  COMPOSITIONSTART: 'compositionstart',
-  COMPOSITIONUPDATE: 'compositionupdate',
-  COMPOSITIONEND: 'compositionend',
-
-  // The beforeinput event is initially only supported in Safari. See
-  // https://bugs.chromium.org/p/chromium/issues/detail?id=342670 for Chrome
-  // implementation tracking.
-  BEFOREINPUT: 'beforeinput',
-
-  // Webview tag events
-  // See http://developer.chrome.com/dev/apps/webview_tag.html
-  EXIT: 'exit',
-  LOADABORT: 'loadabort',
-  LOADCOMMIT: 'loadcommit',
-  LOADREDIRECT: 'loadredirect',
-  LOADSTART: 'loadstart',
-  LOADSTOP: 'loadstop',
-  RESPONSIVE: 'responsive',
-  SIZECHANGED: 'sizechanged',
-  UNRESPONSIVE: 'unresponsive',
-
-  // HTML5 Page Visibility API.  See details at
-  // {@code goog.labs.dom.PageVisibilityMonitor}.
-  VISIBILITYCHANGE: 'visibilitychange',
-
-  // LocalStorage event.
-  STORAGE: 'storage',
-
-  // DOM Level 2 mutation events (deprecated).
-  DOMSUBTREEMODIFIED: 'DOMSubtreeModified',
-  DOMNODEINSERTED: 'DOMNodeInserted',
-  DOMNODEREMOVED: 'DOMNodeRemoved',
-  DOMNODEREMOVEDFROMDOCUMENT: 'DOMNodeRemovedFromDocument',
-  DOMNODEINSERTEDINTODOCUMENT: 'DOMNodeInsertedIntoDocument',
-  DOMATTRMODIFIED: 'DOMAttrModified',
-  DOMCHARACTERDATAMODIFIED: 'DOMCharacterDataModified',
-
-  // Print events.
-  BEFOREPRINT: 'beforeprint',
-  AFTERPRINT: 'afterprint'
-};
diff --git a/src/http/static/viz/2/goog/events/listenable.js b/src/http/static/viz/2/goog/events/listenable.js
deleted file mode 100644
index 0f29d81..0000000
--- a/src/http/static/viz/2/goog/events/listenable.js
+++ /dev/null
@@ -1,338 +0,0 @@
-// Copyright 2012 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview An interface for a listenable JavaScript object.
- * @author chrishenry@google.com (Chris Henry)
- */
-
-goog.provide('goog.events.Listenable');
-goog.provide('goog.events.ListenableKey');
-
-/** @suppress {extraRequire} */
-goog.require('goog.events.EventId');
-
-goog.forwardDeclare('goog.events.EventLike');
-goog.forwardDeclare('goog.events.EventTarget');
-
-
-
-/**
- * A listenable interface. A listenable is an object with the ability
- * to dispatch/broadcast events to "event listeners" registered via
- * listen/listenOnce.
- *
- * The interface allows for an event propagation mechanism similar
- * to one offered by native browser event targets, such as
- * capture/bubble mechanism, stopping propagation, and preventing
- * default actions. Capture/bubble mechanism depends on the ancestor
- * tree constructed via {@code #getParentEventTarget}; this tree
- * must be directed acyclic graph. The meaning of default action(s)
- * in preventDefault is specific to a particular use case.
- *
- * Implementations that do not support capture/bubble or can not have
- * a parent listenable can simply not implement any ability to set the
- * parent listenable (and have {@code #getParentEventTarget} return
- * null).
- *
- * Implementation of this class can be used with or independently from
- * goog.events.
- *
- * Implementation must call {@code #addImplementation(implClass)}.
- *
- * @interface
- * @see goog.events
- * @see http://www.w3.org/TR/DOM-Level-2-Events/events.html
- */
-goog.events.Listenable = function() {};
-
-
-/**
- * An expando property to indicate that an object implements
- * goog.events.Listenable.
- *
- * See addImplementation/isImplementedBy.
- *
- * @type {string}
- * @const
- */
-goog.events.Listenable.IMPLEMENTED_BY_PROP =
-    'closure_listenable_' + ((Math.random() * 1e6) | 0);
-
-
-/**
- * Marks a given class (constructor) as an implementation of
- * Listenable, do that we can query that fact at runtime. The class
- * must have already implemented the interface.
- * @param {!function(new:goog.events.Listenable,...)} cls The class constructor.
- *     The corresponding class must have already implemented the interface.
- */
-goog.events.Listenable.addImplementation = function(cls) {
-  cls.prototype[goog.events.Listenable.IMPLEMENTED_BY_PROP] = true;
-};
-
-
-/**
- * @param {Object} obj The object to check.
- * @return {boolean} Whether a given instance implements Listenable. The
- *     class/superclass of the instance must call addImplementation.
- */
-goog.events.Listenable.isImplementedBy = function(obj) {
-  return !!(obj && obj[goog.events.Listenable.IMPLEMENTED_BY_PROP]);
-};
-
-
-/**
- * Adds an event listener. A listener can only be added once to an
- * object and if it is added again the key for the listener is
- * returned. Note that if the existing listener is a one-off listener
- * (registered via listenOnce), it will no longer be a one-off
- * listener after a call to listen().
- *
- * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.
- * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback
- *     method.
- * @param {boolean=} opt_useCapture Whether to fire in capture phase
- *     (defaults to false).
- * @param {SCOPE=} opt_listenerScope Object in whose scope to call the
- *     listener.
- * @return {!goog.events.ListenableKey} Unique key for the listener.
- * @template SCOPE,EVENTOBJ
- */
-goog.events.Listenable.prototype.listen;
-
-
-/**
- * Adds an event listener that is removed automatically after the
- * listener fired once.
- *
- * If an existing listener already exists, listenOnce will do
- * nothing. In particular, if the listener was previously registered
- * via listen(), listenOnce() will not turn the listener into a
- * one-off listener. Similarly, if there is already an existing
- * one-off listener, listenOnce does not modify the listeners (it is
- * still a once listener).
- *
- * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.
- * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback
- *     method.
- * @param {boolean=} opt_useCapture Whether to fire in capture phase
- *     (defaults to false).
- * @param {SCOPE=} opt_listenerScope Object in whose scope to call the
- *     listener.
- * @return {!goog.events.ListenableKey} Unique key for the listener.
- * @template SCOPE,EVENTOBJ
- */
-goog.events.Listenable.prototype.listenOnce;
-
-
-/**
- * Removes an event listener which was added with listen() or listenOnce().
- *
- * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.
- * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback
- *     method.
- * @param {boolean=} opt_useCapture Whether to fire in capture phase
- *     (defaults to false).
- * @param {SCOPE=} opt_listenerScope Object in whose scope to call
- *     the listener.
- * @return {boolean} Whether any listener was removed.
- * @template SCOPE,EVENTOBJ
- */
-goog.events.Listenable.prototype.unlisten;
-
-
-/**
- * Removes an event listener which was added with listen() by the key
- * returned by listen().
- *
- * @param {!goog.events.ListenableKey} key The key returned by
- *     listen() or listenOnce().
- * @return {boolean} Whether any listener was removed.
- */
-goog.events.Listenable.prototype.unlistenByKey;
-
-
-/**
- * Dispatches an event (or event like object) and calls all listeners
- * listening for events of this type. The type of the event is decided by the
- * type property on the event object.
- *
- * If any of the listeners returns false OR calls preventDefault then this
- * function will return false.  If one of the capture listeners calls
- * stopPropagation, then the bubble listeners won't fire.
- *
- * @param {goog.events.EventLike} e Event object.
- * @return {boolean} If anyone called preventDefault on the event object (or
- *     if any of the listeners returns false) this will also return false.
- */
-goog.events.Listenable.prototype.dispatchEvent;
-
-
-/**
- * Removes all listeners from this listenable. If type is specified,
- * it will only remove listeners of the particular type. otherwise all
- * registered listeners will be removed.
- *
- * @param {string=} opt_type Type of event to remove, default is to
- *     remove all types.
- * @return {number} Number of listeners removed.
- */
-goog.events.Listenable.prototype.removeAllListeners;
-
-
-/**
- * Returns the parent of this event target to use for capture/bubble
- * mechanism.
- *
- * NOTE(chrishenry): The name reflects the original implementation of
- * custom event target ({@code goog.events.EventTarget}). We decided
- * that changing the name is not worth it.
- *
- * @return {goog.events.Listenable} The parent EventTarget or null if
- *     there is no parent.
- */
-goog.events.Listenable.prototype.getParentEventTarget;
-
-
-/**
- * Fires all registered listeners in this listenable for the given
- * type and capture mode, passing them the given eventObject. This
- * does not perform actual capture/bubble. Only implementors of the
- * interface should be using this.
- *
- * @param {string|!goog.events.EventId<EVENTOBJ>} type The type of the
- *     listeners to fire.
- * @param {boolean} capture The capture mode of the listeners to fire.
- * @param {EVENTOBJ} eventObject The event object to fire.
- * @return {boolean} Whether all listeners succeeded without
- *     attempting to prevent default behavior. If any listener returns
- *     false or called goog.events.Event#preventDefault, this returns
- *     false.
- * @template EVENTOBJ
- */
-goog.events.Listenable.prototype.fireListeners;
-
-
-/**
- * Gets all listeners in this listenable for the given type and
- * capture mode.
- *
- * @param {string|!goog.events.EventId} type The type of the listeners to fire.
- * @param {boolean} capture The capture mode of the listeners to fire.
- * @return {!Array<!goog.events.ListenableKey>} An array of registered
- *     listeners.
- * @template EVENTOBJ
- */
-goog.events.Listenable.prototype.getListeners;
-
-
-/**
- * Gets the goog.events.ListenableKey for the event or null if no such
- * listener is in use.
- *
- * @param {string|!goog.events.EventId<EVENTOBJ>} type The name of the event
- *     without the 'on' prefix.
- * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener The
- *     listener function to get.
- * @param {boolean} capture Whether the listener is a capturing listener.
- * @param {SCOPE=} opt_listenerScope Object in whose scope to call the
- *     listener.
- * @return {goog.events.ListenableKey} the found listener or null if not found.
- * @template SCOPE,EVENTOBJ
- */
-goog.events.Listenable.prototype.getListener;
-
-
-/**
- * Whether there is any active listeners matching the specified
- * signature. If either the type or capture parameters are
- * unspecified, the function will match on the remaining criteria.
- *
- * @param {string|!goog.events.EventId<EVENTOBJ>=} opt_type Event type.
- * @param {boolean=} opt_capture Whether to check for capture or bubble
- *     listeners.
- * @return {boolean} Whether there is any active listeners matching
- *     the requested type and/or capture phase.
- * @template EVENTOBJ
- */
-goog.events.Listenable.prototype.hasListener;
-
-
-
-/**
- * An interface that describes a single registered listener.
- * @interface
- */
-goog.events.ListenableKey = function() {};
-
-
-/**
- * Counter used to create a unique key
- * @type {number}
- * @private
- */
-goog.events.ListenableKey.counter_ = 0;
-
-
-/**
- * Reserves a key to be used for ListenableKey#key field.
- * @return {number} A number to be used to fill ListenableKey#key
- *     field.
- */
-goog.events.ListenableKey.reserveKey = function() {
-  return ++goog.events.ListenableKey.counter_;
-};
-
-
-/**
- * The source event target.
- * @type {Object|goog.events.Listenable|goog.events.EventTarget}
- */
-goog.events.ListenableKey.prototype.src;
-
-
-/**
- * The event type the listener is listening to.
- * @type {string}
- */
-goog.events.ListenableKey.prototype.type;
-
-
-/**
- * The listener function.
- * @type {function(?):?|{handleEvent:function(?):?}|null}
- */
-goog.events.ListenableKey.prototype.listener;
-
-
-/**
- * Whether the listener works on capture phase.
- * @type {boolean}
- */
-goog.events.ListenableKey.prototype.capture;
-
-
-/**
- * The 'this' object for the listener function's scope.
- * @type {Object|undefined}
- */
-goog.events.ListenableKey.prototype.handler;
-
-
-/**
- * A globally unique number to identify the key.
- * @type {number}
- */
-goog.events.ListenableKey.prototype.key;
diff --git a/src/http/static/viz/2/goog/events/listener.js b/src/http/static/viz/2/goog/events/listener.js
deleted file mode 100644
index 5ac7b85..0000000
--- a/src/http/static/viz/2/goog/events/listener.js
+++ /dev/null
@@ -1,128 +0,0 @@
-// Copyright 2005 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Listener object.
- * @see ../demos/events.html
- */
-
-goog.provide('goog.events.Listener');
-
-goog.require('goog.events.ListenableKey');
-
-
-
-/**
- * Simple class that stores information about a listener
- * @param {function(?):?} listener Callback function.
- * @param {Function} proxy Wrapper for the listener that patches the event.
- * @param {EventTarget|goog.events.Listenable} src Source object for
- *     the event.
- * @param {string} type Event type.
- * @param {boolean} capture Whether in capture or bubble phase.
- * @param {Object=} opt_handler Object in whose context to execute the callback.
- * @implements {goog.events.ListenableKey}
- * @constructor
- */
-goog.events.Listener = function(
-    listener, proxy, src, type, capture, opt_handler) {
-  if (goog.events.Listener.ENABLE_MONITORING) {
-    this.creationStack = new Error().stack;
-  }
-
-  /** @override */
-  this.listener = listener;
-
-  /**
-   * A wrapper over the original listener. This is used solely to
-   * handle native browser events (it is used to simulate the capture
-   * phase and to patch the event object).
-   * @type {Function}
-   */
-  this.proxy = proxy;
-
-  /**
-   * Object or node that callback is listening to
-   * @type {EventTarget|goog.events.Listenable}
-   */
-  this.src = src;
-
-  /**
-   * The event type.
-   * @const {string}
-   */
-  this.type = type;
-
-  /**
-   * Whether the listener is being called in the capture or bubble phase
-   * @const {boolean}
-   */
-  this.capture = !!capture;
-
-  /**
-   * Optional object whose context to execute the listener in
-   * @type {Object|undefined}
-   */
-  this.handler = opt_handler;
-
-  /**
-   * The key of the listener.
-   * @const {number}
-   * @override
-   */
-  this.key = goog.events.ListenableKey.reserveKey();
-
-  /**
-   * Whether to remove the listener after it has been called.
-   * @type {boolean}
-   */
-  this.callOnce = false;
-
-  /**
-   * Whether the listener has been removed.
-   * @type {boolean}
-   */
-  this.removed = false;
-};
-
-
-/**
- * @define {boolean} Whether to enable the monitoring of the
- *     goog.events.Listener instances. Switching on the monitoring is only
- *     recommended for debugging because it has a significant impact on
- *     performance and memory usage. If switched off, the monitoring code
- *     compiles down to 0 bytes.
- */
-goog.define('goog.events.Listener.ENABLE_MONITORING', false);
-
-
-/**
- * If monitoring the goog.events.Listener instances is enabled, stores the
- * creation stack trace of the Disposable instance.
- * @type {string}
- */
-goog.events.Listener.prototype.creationStack;
-
-
-/**
- * Marks this listener as removed. This also remove references held by
- * this listener object (such as listener and event source).
- */
-goog.events.Listener.prototype.markAsRemoved = function() {
-  this.removed = true;
-  this.listener = null;
-  this.proxy = null;
-  this.src = null;
-  this.handler = null;
-};
diff --git a/src/http/static/viz/2/goog/events/listenermap.js b/src/http/static/viz/2/goog/events/listenermap.js
deleted file mode 100644
index 0375cf2..0000000
--- a/src/http/static/viz/2/goog/events/listenermap.js
+++ /dev/null
@@ -1,307 +0,0 @@
-// Copyright 2013 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview A map of listeners that provides utility functions to
- * deal with listeners on an event target. Used by
- * {@code goog.events.EventTarget}.
- *
- * WARNING: Do not use this class from outside goog.events package.
- *
- * @visibility {//closure/goog/bin/sizetests:__pkg__}
- * @visibility {//closure/goog:__pkg__}
- * @visibility {//closure/goog/events:__pkg__}
- * @visibility {//closure/goog/labs/events:__pkg__}
- */
-
-goog.provide('goog.events.ListenerMap');
-
-goog.require('goog.array');
-goog.require('goog.events.Listener');
-goog.require('goog.object');
-
-
-
-/**
- * Creates a new listener map.
- * @param {EventTarget|goog.events.Listenable} src The src object.
- * @constructor
- * @final
- */
-goog.events.ListenerMap = function(src) {
-  /** @type {EventTarget|goog.events.Listenable} */
-  this.src = src;
-
-  /**
-   * Maps of event type to an array of listeners.
-   * @type {!Object<string, !Array<!goog.events.Listener>>}
-   */
-  this.listeners = {};
-
-  /**
-   * The count of types in this map that have registered listeners.
-   * @private {number}
-   */
-  this.typeCount_ = 0;
-};
-
-
-/**
- * @return {number} The count of event types in this map that actually
- *     have registered listeners.
- */
-goog.events.ListenerMap.prototype.getTypeCount = function() {
-  return this.typeCount_;
-};
-
-
-/**
- * @return {number} Total number of registered listeners.
- */
-goog.events.ListenerMap.prototype.getListenerCount = function() {
-  var count = 0;
-  for (var type in this.listeners) {
-    count += this.listeners[type].length;
-  }
-  return count;
-};
-
-
-/**
- * Adds an event listener. A listener can only be added once to an
- * object and if it is added again the key for the listener is
- * returned.
- *
- * Note that a one-off listener will not change an existing listener,
- * if any. On the other hand a normal listener will change existing
- * one-off listener to become a normal listener.
- *
- * @param {string|!goog.events.EventId} type The listener event type.
- * @param {!Function} listener This listener callback method.
- * @param {boolean} callOnce Whether the listener is a one-off
- *     listener.
- * @param {boolean=} opt_useCapture The capture mode of the listener.
- * @param {Object=} opt_listenerScope Object in whose scope to call the
- *     listener.
- * @return {!goog.events.ListenableKey} Unique key for the listener.
- */
-goog.events.ListenerMap.prototype.add = function(
-    type, listener, callOnce, opt_useCapture, opt_listenerScope) {
-  var typeStr = type.toString();
-  var listenerArray = this.listeners[typeStr];
-  if (!listenerArray) {
-    listenerArray = this.listeners[typeStr] = [];
-    this.typeCount_++;
-  }
-
-  var listenerObj;
-  var index = goog.events.ListenerMap.findListenerIndex_(
-      listenerArray, listener, opt_useCapture, opt_listenerScope);
-  if (index > -1) {
-    listenerObj = listenerArray[index];
-    if (!callOnce) {
-      // Ensure that, if there is an existing callOnce listener, it is no
-      // longer a callOnce listener.
-      listenerObj.callOnce = false;
-    }
-  } else {
-    listenerObj = new goog.events.Listener(
-        listener, null, this.src, typeStr, !!opt_useCapture, opt_listenerScope);
-    listenerObj.callOnce = callOnce;
-    listenerArray.push(listenerObj);
-  }
-  return listenerObj;
-};
-
-
-/**
- * Removes a matching listener.
- * @param {string|!goog.events.EventId} type The listener event type.
- * @param {!Function} listener This listener callback method.
- * @param {boolean=} opt_useCapture The capture mode of the listener.
- * @param {Object=} opt_listenerScope Object in whose scope to call the
- *     listener.
- * @return {boolean} Whether any listener was removed.
- */
-goog.events.ListenerMap.prototype.remove = function(
-    type, listener, opt_useCapture, opt_listenerScope) {
-  var typeStr = type.toString();
-  if (!(typeStr in this.listeners)) {
-    return false;
-  }
-
-  var listenerArray = this.listeners[typeStr];
-  var index = goog.events.ListenerMap.findListenerIndex_(
-      listenerArray, listener, opt_useCapture, opt_listenerScope);
-  if (index > -1) {
-    var listenerObj = listenerArray[index];
-    listenerObj.markAsRemoved();
-    goog.array.removeAt(listenerArray, index);
-    if (listenerArray.length == 0) {
-      delete this.listeners[typeStr];
-      this.typeCount_--;
-    }
-    return true;
-  }
-  return false;
-};
-
-
-/**
- * Removes the given listener object.
- * @param {!goog.events.ListenableKey} listener The listener to remove.
- * @return {boolean} Whether the listener is removed.
- */
-goog.events.ListenerMap.prototype.removeByKey = function(listener) {
-  var type = listener.type;
-  if (!(type in this.listeners)) {
-    return false;
-  }
-
-  var removed = goog.array.remove(this.listeners[type], listener);
-  if (removed) {
-    /** @type {!goog.events.Listener} */ (listener).markAsRemoved();
-    if (this.listeners[type].length == 0) {
-      delete this.listeners[type];
-      this.typeCount_--;
-    }
-  }
-  return removed;
-};
-
-
-/**
- * Removes all listeners from this map. If opt_type is provided, only
- * listeners that match the given type are removed.
- * @param {string|!goog.events.EventId=} opt_type Type of event to remove.
- * @return {number} Number of listeners removed.
- */
-goog.events.ListenerMap.prototype.removeAll = function(opt_type) {
-  var typeStr = opt_type && opt_type.toString();
-  var count = 0;
-  for (var type in this.listeners) {
-    if (!typeStr || type == typeStr) {
-      var listenerArray = this.listeners[type];
-      for (var i = 0; i < listenerArray.length; i++) {
-        ++count;
-        listenerArray[i].markAsRemoved();
-      }
-      delete this.listeners[type];
-      this.typeCount_--;
-    }
-  }
-  return count;
-};
-
-
-/**
- * Gets all listeners that match the given type and capture mode. The
- * returned array is a copy (but the listener objects are not).
- * @param {string|!goog.events.EventId} type The type of the listeners
- *     to retrieve.
- * @param {boolean} capture The capture mode of the listeners to retrieve.
- * @return {!Array<!goog.events.ListenableKey>} An array of matching
- *     listeners.
- */
-goog.events.ListenerMap.prototype.getListeners = function(type, capture) {
-  var listenerArray = this.listeners[type.toString()];
-  var rv = [];
-  if (listenerArray) {
-    for (var i = 0; i < listenerArray.length; ++i) {
-      var listenerObj = listenerArray[i];
-      if (listenerObj.capture == capture) {
-        rv.push(listenerObj);
-      }
-    }
-  }
-  return rv;
-};
-
-
-/**
- * Gets the goog.events.ListenableKey for the event or null if no such
- * listener is in use.
- *
- * @param {string|!goog.events.EventId} type The type of the listener
- *     to retrieve.
- * @param {!Function} listener The listener function to get.
- * @param {boolean} capture Whether the listener is a capturing listener.
- * @param {Object=} opt_listenerScope Object in whose scope to call the
- *     listener.
- * @return {goog.events.ListenableKey} the found listener or null if not found.
- */
-goog.events.ListenerMap.prototype.getListener = function(
-    type, listener, capture, opt_listenerScope) {
-  var listenerArray = this.listeners[type.toString()];
-  var i = -1;
-  if (listenerArray) {
-    i = goog.events.ListenerMap.findListenerIndex_(
-        listenerArray, listener, capture, opt_listenerScope);
-  }
-  return i > -1 ? listenerArray[i] : null;
-};
-
-
-/**
- * Whether there is a matching listener. If either the type or capture
- * parameters are unspecified, the function will match on the
- * remaining criteria.
- *
- * @param {string|!goog.events.EventId=} opt_type The type of the listener.
- * @param {boolean=} opt_capture The capture mode of the listener.
- * @return {boolean} Whether there is an active listener matching
- *     the requested type and/or capture phase.
- */
-goog.events.ListenerMap.prototype.hasListener = function(
-    opt_type, opt_capture) {
-  var hasType = goog.isDef(opt_type);
-  var typeStr = hasType ? opt_type.toString() : '';
-  var hasCapture = goog.isDef(opt_capture);
-
-  return goog.object.some(this.listeners, function(listenerArray, type) {
-    for (var i = 0; i < listenerArray.length; ++i) {
-      if ((!hasType || listenerArray[i].type == typeStr) &&
-          (!hasCapture || listenerArray[i].capture == opt_capture)) {
-        return true;
-      }
-    }
-
-    return false;
-  });
-};
-
-
-/**
- * Finds the index of a matching goog.events.Listener in the given
- * listenerArray.
- * @param {!Array<!goog.events.Listener>} listenerArray Array of listener.
- * @param {!Function} listener The listener function.
- * @param {boolean=} opt_useCapture The capture flag for the listener.
- * @param {Object=} opt_listenerScope The listener scope.
- * @return {number} The index of the matching listener within the
- *     listenerArray.
- * @private
- */
-goog.events.ListenerMap.findListenerIndex_ = function(
-    listenerArray, listener, opt_useCapture, opt_listenerScope) {
-  for (var i = 0; i < listenerArray.length; ++i) {
-    var listenerObj = listenerArray[i];
-    if (!listenerObj.removed && listenerObj.listener == listener &&
-        listenerObj.capture == !!opt_useCapture &&
-        listenerObj.handler == opt_listenerScope) {
-      return i;
-    }
-  }
-  return -1;
-};