4 * Copyright(c) 2006-2007, Ext JS, LLC.
6 * Originally Released Under LGPL - original licence link has changed is not relivant.
9 * <script type="text/javascript">
14 * @class Roo.util.MixedCollection
15 * @extends Roo.util.Observable
16 * A Collection class that maintains both numeric indexes and keys and exposes events.
18 * @param {Boolean} allowFunctions True if the addAll function should add function references to the
19 * collection (defaults to false)
20 * @param {Function} keyFn A function that can accept an item of the type(s) stored in this MixedCollection
21 * and return the key value for that item. This is used when available to look up the key on items that
22 * were passed without an explicit key parameter to a MixedCollection method. Passing this parameter is
23 * equivalent to providing an implementation for the {@link #getKey} method.
25 Roo.util.MixedCollection = function(allowFunctions, keyFn){
33 * Fires when the collection is cleared.
38 * Fires when an item is added to the collection.
39 * @param {Number} index The index at which the item was added.
40 * @param {Object} o The item added.
41 * @param {String} key The key associated with the added item.
46 * Fires when an item is replaced in the collection.
47 * @param {String} key he key associated with the new added.
48 * @param {Object} old The item being replaced.
49 * @param {Object} new The new item.
54 * Fires when an item is removed from the collection.
55 * @param {Object} o The item being removed.
56 * @param {String} key (optional) The key associated with the removed item.
61 this.allowFunctions = allowFunctions === true;
65 Roo.util.MixedCollection.superclass.constructor.call(this);
68 Roo.extend(Roo.util.MixedCollection, Roo.util.Observable, {
69 allowFunctions : false,
72 * Adds an item to the collection.
73 * @param {String} key The key to associate with the item
74 * @param {Object} o The item to add.
75 * @return {Object} The item added.
77 add : function(key, o){
79 if(arguments.length == 1){
86 if(typeof key == "undefined" || key === null){
92 var old = this.map[key];
93 Roo.log('old.........................');
96 return this.replace(key, o);
103 this.fireEvent("add", this.length-1, o, key);
108 * MixedCollection has a generic way to fetch keys if you implement getKey.
111 var mc = new Roo.util.MixedCollection();
112 mc.add(someEl.dom.id, someEl);
113 mc.add(otherEl.dom.id, otherEl);
117 var mc = new Roo.util.MixedCollection();
118 mc.getKey = function(el){
124 // or via the constructor
125 var mc = new Roo.util.MixedCollection(false, function(el){
131 * @param o {Object} The item for which to find the key.
132 * @return {Object} The key for the passed item.
134 getKey : function(o){
139 * Replaces an item in the collection.
140 * @param {String} key The key associated with the item to replace, or the item to replace.
141 * @param o {Object} o (optional) If the first parameter passed was a key, the item to associate with that key.
142 * @return {Object} The new item.
144 replace : function(key, o){
145 if(arguments.length == 1){
147 key = this.getKey(o);
149 Roo.log('replace.........................');
151 var old = this.item(key);
152 if(typeof key == "undefined" || key === null || typeof old == "undefined"){
153 return this.add(key, o);
155 var index = this.indexOfKey(key);
158 this.items[index] = o;
160 this.fireEvent("replace", key, old, o);
165 * Adds all elements of an Array or an Object to the collection.
166 * @param {Object/Array} objs An Object containing properties which will be added to the collection, or
167 * an Array of values, each of which are added to the collection.
169 addAll : function(objs){
170 if(arguments.length > 1 || objs instanceof Array){
171 var args = arguments.length > 1 ? arguments : objs;
172 for(var i = 0, len = args.length; i < len; i++){
176 for(var key in objs){
177 if(this.allowFunctions || typeof objs[key] != "function"){
178 this.add(key, objs[key]);
185 * Executes the specified function once for every item in the collection, passing each
186 * item as the first and only parameter. returning false from the function will stop the iteration.
187 * @param {Function} fn The function to execute for each item.
188 * @param {Object} scope (optional) The scope in which to execute the function.
190 each : function(fn, scope){
191 var items = [].concat(this.items); // each safe for removal
192 for(var i = 0, len = items.length; i < len; i++){
193 if(fn.call(scope || items[i], items[i], i, len) === false){
200 * Executes the specified function once for every key in the collection, passing each
201 * key, and its associated item as the first two parameters.
202 * @param {Function} fn The function to execute for each item.
203 * @param {Object} scope (optional) The scope in which to execute the function.
205 eachKey : function(fn, scope){
206 for(var i = 0, len = this.keys.length; i < len; i++){
207 fn.call(scope || window, this.keys[i], this.items[i], i, len);
212 * Returns the first item in the collection which elicits a true return value from the
213 * passed selection function.
214 * @param {Function} fn The selection function to execute for each item.
215 * @param {Object} scope (optional) The scope in which to execute the function.
216 * @return {Object} The first item in the collection which returned true from the selection function.
218 find : function(fn, scope){
219 for(var i = 0, len = this.items.length; i < len; i++){
220 if(fn.call(scope || window, this.items[i], this.keys[i])){
221 return this.items[i];
228 * Inserts an item at the specified index in the collection.
229 * @param {Number} index The index to insert the item at.
230 * @param {String} key The key to associate with the new item, or the item itself.
231 * @param {Object} o (optional) If the second parameter was a key, the new item.
232 * @return {Object} The item inserted.
234 insert : function(index, key, o){
235 if(arguments.length == 2){
237 key = this.getKey(o);
239 if(index >= this.length){
240 return this.add(key, o);
243 this.items.splice(index, 0, o);
244 if(typeof key != "undefined" && key != null){
247 this.keys.splice(index, 0, key);
248 this.fireEvent("add", index, o, key);
253 * Removed an item from the collection.
254 * @param {Object} o The item to remove.
255 * @return {Object} The item removed.
257 remove : function(o){
258 return this.removeAt(this.indexOf(o));
262 * Remove an item from a specified index in the collection.
263 * @param {Number} index The index within the collection of the item to remove.
265 removeAt : function(index){
266 if(index < this.length && index >= 0){
268 var o = this.items[index];
269 this.items.splice(index, 1);
270 var key = this.keys[index];
271 if(typeof key != "undefined"){
272 delete this.map[key];
274 this.keys.splice(index, 1);
275 this.fireEvent("remove", o, key);
280 * Removed an item associated with the passed key fom the collection.
281 * @param {String} key The key of the item to remove.
283 removeKey : function(key){
284 return this.removeAt(this.indexOfKey(key));
288 * Returns the number of items in the collection.
289 * @return {Number} the number of items in the collection.
291 getCount : function(){
296 * Returns index within the collection of the passed Object.
297 * @param {Object} o The item to find the index of.
298 * @return {Number} index of the item.
300 indexOf : function(o){
301 if(!this.items.indexOf){
302 for(var i = 0, len = this.items.length; i < len; i++){
303 if(this.items[i] == o) return i;
307 return this.items.indexOf(o);
312 * Returns index within the collection of the passed key.
313 * @param {String} key The key to find the index of.
314 * @return {Number} index of the key.
316 indexOfKey : function(key){
317 if(!this.keys.indexOf){
318 for(var i = 0, len = this.keys.length; i < len; i++){
319 if(this.keys[i] == key) return i;
323 return this.keys.indexOf(key);
328 * Returns the item associated with the passed key OR index. Key has priority over index.
329 * @param {String/Number} key The key or index of the item.
330 * @return {Object} The item associated with the passed key.
332 item : function(key){
333 var item = typeof this.map[key] != "undefined" ? this.map[key] : this.items[key];
334 return typeof item != 'function' || this.allowFunctions ? item : null; // for prototype!
338 * Returns the item at the specified index.
339 * @param {Number} index The index of the item.
342 itemAt : function(index){
343 return this.items[index];
347 * Returns the item associated with the passed key.
348 * @param {String/Number} key The key of the item.
349 * @return {Object} The item associated with the passed key.
352 return this.map[key];
356 * Returns true if the collection contains the passed Object as an item.
357 * @param {Object} o The Object to look for in the collection.
358 * @return {Boolean} True if the collection contains the Object as an item.
360 contains : function(o){
361 return this.indexOf(o) != -1;
365 * Returns true if the collection contains the passed Object as a key.
366 * @param {String} key The key to look for in the collection.
367 * @return {Boolean} True if the collection contains the Object as a key.
369 containsKey : function(key){
370 return typeof this.map[key] != "undefined";
374 * Removes all items from the collection.
381 this.fireEvent("clear");
385 * Returns the first item in the collection.
386 * @return {Object} the first item in the collection..
389 return this.items[0];
393 * Returns the last item in the collection.
394 * @return {Object} the last item in the collection..
397 return this.items[this.length-1];
400 _sort : function(property, dir, fn){
401 var dsc = String(dir).toUpperCase() == "DESC" ? -1 : 1;
402 fn = fn || function(a, b){
405 var c = [], k = this.keys, items = this.items;
406 for(var i = 0, len = items.length; i < len; i++){
407 c[c.length] = {key: k[i], value: items[i], index: i};
409 c.sort(function(a, b){
410 var v = fn(a[property], b[property]) * dsc;
412 v = (a.index < b.index ? -1 : 1);
416 for(var i = 0, len = c.length; i < len; i++){
417 items[i] = c[i].value;
420 this.fireEvent("sort", this);
424 * Sorts this collection with the passed comparison function
425 * @param {String} direction (optional) "ASC" or "DESC"
426 * @param {Function} fn (optional) comparison function
428 sort : function(dir, fn){
429 this._sort("value", dir, fn);
433 * Sorts this collection by keys
434 * @param {String} direction (optional) "ASC" or "DESC"
435 * @param {Function} fn (optional) a comparison function (defaults to case insensitive string)
437 keySort : function(dir, fn){
438 this._sort("key", dir, fn || function(a, b){
439 return String(a).toUpperCase()-String(b).toUpperCase();
444 * Returns a range of items in this collection
445 * @param {Number} startIndex (optional) defaults to 0
446 * @param {Number} endIndex (optional) default to the last item
447 * @return {Array} An array of items
449 getRange : function(start, end){
450 var items = this.items;
451 if(items.length < 1){
455 end = Math.min(typeof end == "undefined" ? this.length-1 : end, this.length-1);
458 for(var i = start; i <= end; i++) {
459 r[r.length] = items[i];
462 for(var i = start; i >= end; i--) {
463 r[r.length] = items[i];
470 * Filter the <i>objects</i> in this collection by a specific property.
471 * Returns a new collection that has been filtered.
472 * @param {String} property A property on your objects
473 * @param {String/RegExp} value Either string that the property values
474 * should start with or a RegExp to test against the property
475 * @return {MixedCollection} The new filtered collection
477 filter : function(property, value){
478 if(!value.exec){ // not a regex
479 value = String(value);
480 if(value.length == 0){
483 value = new RegExp("^" + Roo.escapeRe(value), "i");
485 return this.filterBy(function(o){
486 return o && value.test(o[property]);
491 * Filter by a function. * Returns a new collection that has been filtered.
492 * The passed function will be called with each
493 * object in the collection. If the function returns true, the value is included
494 * otherwise it is filtered.
495 * @param {Function} fn The function to be called, it will receive the args o (the object), k (the key)
496 * @param {Object} scope (optional) The scope of the function (defaults to this)
497 * @return {MixedCollection} The new filtered collection
499 filterBy : function(fn, scope){
500 var r = new Roo.util.MixedCollection();
501 r.getKey = this.getKey;
502 var k = this.keys, it = this.items;
503 for(var i = 0, len = it.length; i < len; i++){
504 if(fn.call(scope||this, it[i], k[i])){
512 * Creates a duplicate of this collection
513 * @return {MixedCollection}
516 var r = new Roo.util.MixedCollection();
517 var k = this.keys, it = this.items;
518 for(var i = 0, len = it.length; i < len; i++){
521 r.getKey = this.getKey;
526 * Returns the item associated with the passed key or index.
528 * @param {String/Number} key The key or index of the item.
529 * @return {Object} The item associated with the passed key.
531 Roo.util.MixedCollection.prototype.get = Roo.util.MixedCollection.prototype.item;