[Files.app] Split the JavaScript files into subdirectories: common, background, and foreground

chrome/browser/resources/file_manager/js/image_editor/image_buffer.js

-// Copyright (c) 2012 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.
-
-'use strict';
-
-/**
- * A stack of overlays that display itself and handle mouse events.
- * TODO(kaznacheev) Consider disbanding this class and moving
- * the functionality to individual objects that display anything or handle
- * mouse events.
- * @constructor
- */
-function ImageBuffer() {
-  this.overlays_ = [];
-}
-
-/**
- * TODO(JSDOC).
- * @param {ImageBuffer.Overlay} overlay  // TODO(JSDOC).
- */
-ImageBuffer.prototype.addOverlay = function(overlay) {
-  var zIndex = overlay.getZIndex();
-  // Store the overlays in the ascending Z-order.
-  var i;
-  for (i = 0; i != this.overlays_.length; i++) {
-    if (zIndex < this.overlays_[i].getZIndex()) break;
-  }
-  this.overlays_.splice(i, 0, overlay);
-};
-
-/**
- * TODO(JSDOC).
- * @param {ImageBuffer.Overlay} overlay  // TODO(JSDOC).
- */
-ImageBuffer.prototype.removeOverlay = function(overlay) {
-  for (var i = 0; i != this.overlays_.length; i++) {
-    if (this.overlays_[i] == overlay) {
-      this.overlays_.splice(i, 1);
-      return;
-    }
-  }
-  throw new Error('Cannot remove overlay ' + overlay);
-};
-
-/**
- * Draws overlays in the ascending Z-order.
- */
-ImageBuffer.prototype.draw = function() {
-  for (var i = 0; i != this.overlays_.length; i++) {
-    this.overlays_[i].draw();
-  }
-};
-
-/**
- * Searches for a cursor style in the descending Z-order.
- * @param {number} x X coordinate for cursor.
- * @param {number} y Y coordinate for cursor.
- * @param {boolean} mouseDown If mouse button is down.
- * @return {string} A value for style.cursor CSS property.
- */
-ImageBuffer.prototype.getCursorStyle = function(x, y, mouseDown) {
-  for (var i = this.overlays_.length - 1; i >= 0; i--) {
-    var style = this.overlays_[i].getCursorStyle(x, y, mouseDown);
-    if (style) return style;
-  }
-  return 'default';
-};
-
-/**
- * Searches for a click handler in the descending Z-order.
- * @param {number} x X coordinate for click event.
- * @param {number} y Y coordinate for click event.
- * @return {boolean} True if handled.
- */
-ImageBuffer.prototype.onClick = function(x, y) {
-  for (var i = this.overlays_.length - 1; i >= 0; i--) {
-    if (this.overlays_[i].onClick(x, y)) return true;
-  }
-  return false;
-};
-
-/**
- * Searches for a drag handler in the descending Z-order.
- * @param {number} x Event X coordinate.
- * @param {number} y Event Y coordinate.
- * @param {boolean} touch True if it's a touch event, false if mouse.
- * @return {function(number,number)} A function to be called on mouse drag.
- */
-ImageBuffer.prototype.getDragHandler = function(x, y, touch) {
-  for (var i = this.overlays_.length - 1; i >= 0; i--) {
-    var handler = this.overlays_[i].getDragHandler(x, y, touch);
-    if (handler)
-      return handler;
-  }
-  return null;
-};
-
-/**
- * Searches for an action for the double tap enumerating
- * layers in the descending Z-order.
- * @param {number} x X coordinate of the event.
- * @param {number} y Y coordinate of the event.
- * @return {ImageBuffer.DoubleTapAction} Action to perform as result.
- */
-ImageBuffer.prototype.getDoubleTapAction = function(x, y) {
-  for (var i = this.overlays_.length - 1; i >= 0; i--) {
-    var action = this.overlays_[i].getDoubleTapAction(x, y);
-    if (action != ImageBuffer.DoubleTapAction.NOTHING)
-      return action;
-  }
-  return ImageBuffer.DoubleTapAction.NOTHING;
-};
-
-/**
- * Possible double tap actions.
- * @enum
- */
-ImageBuffer.DoubleTapAction = {
-  NOTHING: 0,
-  COMMIT: 1,
-  CANCEL: 2
-};
-
-/**
- * ImageBuffer.Overlay is a pluggable extension that modifies the outlook
- * and the behavior of the ImageBuffer instance.
- * @class
- */
-ImageBuffer.Overlay = function() {};
-
-/**
- * TODO(JSDOC).
- * @return {number}  // TODO(JSDOC).
- */
-ImageBuffer.Overlay.prototype.getZIndex = function() { return 0 };
-
-/**
- * TODO(JSDOC).
- */
-ImageBuffer.Overlay.prototype.draw = function() {};
-
-/**
- * TODO(JSDOC).
- * @param {number} x X coordinate for cursor.
- * @param {number} y Y coordinate for cursor.
- * @param {boolean} mouseDown If mouse button is down.
- * @return {?string} A value for style.cursor CSS property or null for
- *     default.
- */
-ImageBuffer.Overlay.prototype.getCursorStyle = function(x, y, mouseDown) {
-  return null;
-};
-
-/**
- * TODO(JSDOC).
- * @param {number} x  // TODO(JSDOC).
- * @param {number} y  // TODO(JSDOC).
- * @return {boolean}  // TODO(JSDOC).
- */
-ImageBuffer.Overlay.prototype.onClick = function(x, y) {
-  return false;
-};
-
-/**
- * TODO(JSDOC).
- * @param {number} x Event X coordinate.
- * @param {number} y Event Y coordinate.
- * @param {boolean} touch True if it's a touch event, false if mouse.
- * @return {function(number,number)} A function to be called on mouse drag.
- */
-ImageBuffer.Overlay.prototype.getDragHandler = function(x, y, touch) {
-  return null;
-};
-
-/**
- * TODO(JSDOC).
- * @param {number} x  // TODO(JSDOC).
- * @param {number} y  // TODO(JSDOC).
- * @return {ImageBuffer.DoubleTapAction}  // TODO(JSDOC).
- */
-ImageBuffer.Overlay.prototype.getDoubleTapAction = function(x, y) {
-  return ImageBuffer.DoubleTapAction.NOTHING;
-};