Remove app_remoting.

remoting/webapp/app_remoting/js/drag_and_drop.js

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/**
- * @fileoverview
- * Provide support for drag-and-drop operations in shaped windows. The
- * standard API doesn't work because no "dragover" events are generated
- * if the mouse moves outside the window region.
- */
-'use strict';
-
-/** @suppress {duplicate} */
-var remoting = remoting || {};
-
-/**
- * @constructor
- * @param {Element} element The element to register for drag and drop.
- * @param {function(number, number):void} dragUpdate Callback to receive the
- *     X and Y deltas as the element is dragged.
- * @param {function():void=} opt_dragStart Initiation callback.
- * @param {function():void=} opt_dragEnd Completion callback.
- */
-remoting.DragAndDrop = function(element, dragUpdate,
-                                opt_dragStart, opt_dragEnd) {
-  /** @private */
-  this.element_ = element;
-
-  /** @private */
-  this.dragUpdate_ = dragUpdate;
-
-  /** @private */
-  this.dragStart_ = opt_dragStart;
-
-  /** @private */
-  this.dragEnd_ = opt_dragEnd;
-
-  /** @private {number} */
-  this.previousDeltaX_ = 0;
-
-  /** @private {number} */
-  this.previousDeltaY_ = 0;
-
-  /** @type {boolean} */
-  this.seenNonZeroDelta_ = false;
-
-  /** @private {function(Event):void} */
-  this.callOnMouseUp_ = this.onMouseUp_.bind(this);
-
-  /** @private {function(Event):void} */
-  this.callOnMouseMove_ = this.onMouseMove_.bind(this);
-
-  element.addEventListener('mousedown', this.onMouseDown_.bind(this), false);
-};
-
-/**
- * @param {Event} event
- */
-remoting.DragAndDrop.prototype.onMouseDown_ = function(event) {
-  if (event.button != 0) {
-    return;
-  }
-  this.previousDeltaX_ = 0;
-  this.previousDeltaY_ = 0;
-  this.seenNonZeroDelta_ = false;
-  this.element_.addEventListener('mousemove', this.callOnMouseMove_, false);
-  this.element_.addEventListener('mouseup', this.callOnMouseUp_, false);
-  this.element_.requestPointerLock();
-  if (this.dragStart_) {
-    this.dragStart_();
-  }
-};
-
-/**
- * TODO(jamiewalch): Remove the workarounds in this method once the pointer-lock
- * API is fixed (crbug.com/419562).
- *
- * @param {Event} event
- */
-remoting.DragAndDrop.prototype.onMouseMove_ = function(event) {
-  // Ignore the first non-zero delta. A click event will generate a bogus
-  // mousemove event, even if the mouse doesn't move.
-  if (!this.seenNonZeroDelta_ &&
-      (event.movementX != 0 || event.movementY != 0)) {
-    this.seenNonZeroDelta_ = true;
-  }
-
-  /**
-   * The mouse lock API is buggy when used with shaped windows, and occasionally
-   * generates single, large deltas that must be filtered out.
-   *
-   * @param {number} previous
-   * @param {number} current
-   * @return {number}
-   */
-  var adjustDelta = function(previous, current) {
-    var THRESHOLD = 100;  // Based on observed values.
-    if (Math.abs(previous < THRESHOLD) && Math.abs(current) >= THRESHOLD) {
-      return 0;
-    }
-    return current;
-  };
-  this.previousDeltaX_ = adjustDelta(this.previousDeltaX_, event.movementX);
-  this.previousDeltaY_ = adjustDelta(this.previousDeltaY_, event.movementY);
-  if (this.previousDeltaX_ != 0 || this.previousDeltaY_ != 0) {
-    this.dragUpdate_(this.previousDeltaX_, this.previousDeltaY_);
-  }
-};
-
-/**
- * @param {Event} event
- */
-remoting.DragAndDrop.prototype.onMouseUp_ = function(event) {
-  this.element_.removeEventListener('mousemove', this.callOnMouseMove_, false);
-  this.element_.removeEventListener('mouseup', this.callOnMouseUp_, false);
-  document.exitPointerLock();
-  if (this.dragEnd_) {
-    this.dragEnd_();
-  }
-};