Make directory structure better match class hierarchy

2012-08-29 21:46:21 +02:00
parent 638504f750
commit 23ee8b73bd
49 changed files with 0 additions and 0 deletions
--- a/src/ol3/tile.js
+++ b/src/ol3/tile.js
@@ -0,0 +1,159 @@
+goog.provide('ol3.Tile');
+goog.provide('ol3.TileState');
+
+goog.require('goog.array');
+goog.require('goog.events');
+goog.require('goog.events.EventTarget');
+goog.require('goog.events.EventType');
+goog.require('ol3.TileCoord');
+
+
+/**
+ * @enum {number}
+ */
+ol3.TileState = {
+  IDLE: 0,
+  LOADING: 1,
+  LOADED: 2,
+  ERROR: 3
+};
+
+
+
+/**
+ * @constructor
+ * @extends {goog.events.EventTarget}
+ * @param {ol3.TileCoord} tileCoord Tile coordinate.
+ * @param {string} src Source.
+ * @param {?string} crossOrigin Cross origin.
+ */
+ol3.Tile = function(tileCoord, src, crossOrigin) {
+
+  goog.base(this);
+
+  /**
+   * @type {ol3.TileCoord}
+   */
+  this.tileCoord = tileCoord;
+
+  /**
+   * @private
+   * @type {string}
+   */
+  this.src_ = src;
+
+  /**
+   * @private
+   * @type {ol3.TileState}
+   */
+  this.state_ = ol3.TileState.IDLE;
+
+  /**
+   * @private
+   * @type {Image}
+   */
+  this.image_ = new Image();
+  if (!goog.isNull(crossOrigin)) {
+    this.image_.crossOrigin = crossOrigin;
+  }
+
+  /**
+   * @private
+   * @type {Object.<number, Image>}
+   */
+  this.imageByContext_ = {};
+
+  /**
+   * @private
+   * @type {Array.<number>}
+   */
+  this.imageListenerKeys_ = null;
+
+};
+goog.inherits(ol3.Tile, goog.events.EventTarget);
+
+
+/**
+ * @protected
+ */
+ol3.Tile.prototype.dispatchChangeEvent = function() {
+  this.dispatchEvent(goog.events.EventType.CHANGE);
+};
+
+
+/**
+ * @param {Object=} opt_context Object.
+ * @return {Image} Image.
+ */
+ol3.Tile.prototype.getImage = function(opt_context) {
+  if (goog.isDef(opt_context)) {
+    var image;
+    var key = goog.getUid(opt_context);
+    if (key in this.imageByContext_) {
+      return this.imageByContext_[key];
+    } else if (goog.object.isEmpty(this.imageByContext_)) {
+      image = this.image_;
+    } else {
+      image = /** @type {Image} */ this.image_.cloneNode(false);
+    }
+    this.imageByContext_[key] = image;
+    return image;
+  } else {
+    return this.image_;
+  }
+};
+
+
+/**
+ * @return {ol3.TileState} State.
+ */
+ol3.Tile.prototype.getState = function() {
+  return this.state_;
+};
+
+
+/**
+ * @private
+ */
+ol3.Tile.prototype.handleImageError_ = function() {
+  this.state_ = ol3.TileState.ERROR;
+  this.unlistenImage_();
+};
+
+
+/**
+ * @private
+ */
+ol3.Tile.prototype.handleImageLoad_ = function() {
+  this.state_ = ol3.TileState.LOADED;
+  this.unlistenImage_();
+  this.dispatchChangeEvent();
+};
+
+
+/**
+ */
+ol3.Tile.prototype.load = function() {
+  if (this.state_ == ol3.TileState.IDLE) {
+    this.state_ = ol3.TileState.LOADING;
+    goog.asserts.assert(goog.isNull(this.imageListenerKeys_));
+    this.imageListenerKeys_ = [
+      goog.events.listenOnce(this.image_, goog.events.EventType.ERROR,
+          this.handleImageError_, false, this),
+      goog.events.listenOnce(this.image_, goog.events.EventType.LOAD,
+          this.handleImageLoad_, false, this)
+    ];
+    this.image_.src = this.src_;
+  }
+};
+
+
+/**
+ * @private
+ */
+ol3.Tile.prototype.unlistenImage_ = function() {
+  goog.asserts.assert(!goog.isNull(this.imageListenerKeys_));
+  goog.array.forEach(this.imageListenerKeys_, goog.events.unlistenByKey);
+  this.imageListenerKeys_ = null;
+};
+