From f5b26fab4f8c3b40153e6adcef27b92bece8b65f Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Sat, 23 May 2015 00:13:00 +0200
Subject: [PATCH] Added WoltLab/WCF/ObjectMap, a Dictionary with objects as
 keys

---
 .../files/js/WoltLab/WCF/Dictionary.js        |   6 +-
 .../install/files/js/WoltLab/WCF/ObjectMap.js | 119 ++++++++++++++++++
 2 files changed, 123 insertions(+), 2 deletions(-)
 create mode 100644 wcfsetup/install/files/js/WoltLab/WCF/ObjectMap.js

diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Dictionary.js b/wcfsetup/install/files/js/WoltLab/WCF/Dictionary.js
index 91ce2dc4e1..b955e03095 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Dictionary.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Dictionary.js
@@ -1,6 +1,8 @@
 /**
  * Dictionary implemention relying on an object or if supported on a Map to hold key => value data.
  * 
+ * If you're looking for a dictionary with object keys, please see `WoltLab/WCF/ObjectMap`.
+ * 
  * @author	Tim Duesterhus, Alexander Ebert
  * @copyright	2001-2015 WoltLab GmbH
  * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
@@ -40,10 +42,10 @@ define([], function() {
 		 * 
 		 * @param	{string}	key	key
 		 */
-		delete: function(key) {
+		'delete': function(key) {
 			if (typeof key === 'number') key = key.toString();
 			
-			if (_hasMap) this._dictionary.delete(key);
+			if (_hasMap) this._dictionary['delete'](key);
 			else this._dictionary[key] = undefined;
 		},
 		
diff --git a/wcfsetup/install/files/js/WoltLab/WCF/ObjectMap.js b/wcfsetup/install/files/js/WoltLab/WCF/ObjectMap.js
new file mode 100644
index 0000000000..345e66d016
--- /dev/null
+++ b/wcfsetup/install/files/js/WoltLab/WCF/ObjectMap.js
@@ -0,0 +1,119 @@
+/**
+ * Simple `object` to `object` map using a native Map on supported browsers, otherwise a set of two arrays.
+ * 
+ * If you're looking for a dictionary with string keys, please see `WoltLab/WCF/Dictionary`.
+ * 
+ * @author	Alexander Ebert
+ * @copyright	2001-2015 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @module	WoltLab/WCF/ObjectMap
+ */
+define([], function() {
+	"use strict";
+	
+	var _hasMap = window.hasOwnProperty('Map');
+	
+	/**
+	 * @constructor
+	 */
+	function ObjectMap() {
+		this._map = (_hasMap) ? new Map() : { key: [], value: [] };
+	};
+	ObjectMap.prototype = {
+			/**
+			 * Sets a new key with given value, will overwrite an existing key.
+			 * 
+			 * @param	{object}	key	key
+			 * @param	{object}	value	value
+			 */
+			set: function(key, value) {
+				if (typeof key !== 'object' || key === null) {
+					throw new TypeError("Only objects can be used as key");
+				}
+				
+				if (typeof value !== 'object' || value === null) {
+					throw new TypeError("Only objects can be used as value");
+				}
+				
+				if (_hasMap) {
+					this._map.set(key, value);
+				}
+				else {
+					this._map.key.push(key);
+					this._map.value.push(value);
+				}
+			},
+			
+			/**
+			 * Removes a key from the map.
+			 * 
+			 * @param	{object}	key	key
+			 */
+			'delete': function(key) {
+				if (_hasMap) {
+					this._map.['delete'](_key);
+				}
+				else {
+					var index = this._map.key.indexOf(key);
+					this._map.key.splice(index);
+					this._map.value.splice(index);
+				}
+			},
+			
+			/**
+			 * Returns true if dictionary contains a value for given key.
+			 * 
+			 * @param	{object}	key	key
+			 * @return	{boolean}	true if key exists
+			 */
+			has: function(key) {
+				if (_hasMap) {
+					return this._map.has(key);
+				}
+				else {
+					return (this._map.key.indexOf(key) !== -1);
+				}
+			},
+			
+			/**
+			 * Retrieves a value by key, returns undefined if there is no match.
+			 * 
+			 * @param	{object}	key	key
+			 * @return	{*}
+			 */
+			get: function(key) {
+				if (_hasMap) {
+					return this._map.get(key);
+				}
+				else {
+					var index = this._map.key.indexOf(key);
+					if (index !== -1) {
+						return this._map.value[index];
+					}
+					
+					return undefined;
+				}
+			},
+			
+			/**
+			 * Iterates over the object map, callback function should expect the
+			 * value as first parameter and the key second.
+			 * 
+			 * @param	{function<object, object>}	callback	callback for each iteration
+			 */
+			forEach: function(callback) {
+				if (typeof callback !== "function") {
+					throw new TypeError("forEach() expects a callback as first parameter.");
+				}
+				
+				if (_hasMap) {
+					this._map.forEach(callback);
+				}
+				else {
+					for (var i = 0, length = this._map.keys.length; i < length; i++) {
+						callback(this._map.value[i], this._map.key[i]);
+					}
+				}
+			}
+	};
+});
-- 
2.20.1