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){
85 if(typeof key == "undefined" || key === null){
90 var old = this.map[key];
91 Roo.log('old.........................');
94 return this.replace(key, o);
101 this.fireEvent("add", this.length-1, o, key);
106 * MixedCollection has a generic way to fetch keys if you implement getKey.
109 var mc = new Roo.util.MixedCollection();
110 mc.add(someEl.dom.id, someEl);
111 mc.add(otherEl.dom.id, otherEl);
115 var mc = new Roo.util.MixedCollection();
116 mc.getKey = function(el){
122 // or via the constructor
123 var mc = new Roo.util.MixedCollection(false, function(el){
129 * @param o {Object} The item for which to find the key.
130 * @return {Object} The key for the passed item.
132 getKey : function(o){
137 * Replaces an item in the collection.
138 * @param {String} key The key associated with the item to replace, or the item to replace.
139 * @param o {Object} o (optional) If the first parameter passed was a key, the item to associate with that key.
140 * @return {Object} The new item.
142 replace : function(key, o){
143 if(arguments.length == 1){
145 key = this.getKey(o);
147 var old = this.item(key);
148 if(typeof key == "undefined" || key === null || typeof old == "undefined"){
149 return this.add(key, o);
151 var index = this.indexOfKey(key);
152 this.items[index] = o;
154 this.fireEvent("replace", key, old, o);
159 * Adds all elements of an Array or an Object to the collection.
160 * @param {Object/Array} objs An Object containing properties which will be added to the collection, or
161 * an Array of values, each of which are added to the collection.
163 addAll : function(objs){
164 if(arguments.length > 1 || objs instanceof Array){
165 var args = arguments.length > 1 ? arguments : objs;
166 for(var i = 0, len = args.length; i < len; i++){
170 for(var key in objs){
171 if(this.allowFunctions || typeof objs[key] != "function"){
172 this.add(key, objs[key]);
179 * Executes the specified function once for every item in the collection, passing each
180 * item as the first and only parameter. returning false from the function will stop the iteration.
181 * @param {Function} fn The function to execute for each item.
182 * @param {Object} scope (optional) The scope in which to execute the function.
184 each : function(fn, scope){
185 var items = [].concat(this.items); // each safe for removal
186 for(var i = 0, len = items.length; i < len; i++){
187 if(fn.call(scope || items[i], items[i], i, len) === false){
194 * Executes the specified function once for every key in the collection, passing each
195 * key, and its associated item as the first two parameters.
196 * @param {Function} fn The function to execute for each item.
197 * @param {Object} scope (optional) The scope in which to execute the function.
199 eachKey : function(fn, scope){
200 for(var i = 0, len = this.keys.length; i < len; i++){
201 fn.call(scope || window, this.keys[i], this.items[i], i, len);
206 * Returns the first item in the collection which elicits a true return value from the
207 * passed selection function.
208 * @param {Function} fn The selection function to execute for each item.
209 * @param {Object} scope (optional) The scope in which to execute the function.
210 * @return {Object} The first item in the collection which returned true from the selection function.
212 find : function(fn, scope){
213 for(var i = 0, len = this.items.length; i < len; i++){
214 if(fn.call(scope || window, this.items[i], this.keys[i])){
215 return this.items[i];
222 * Inserts an item at the specified index in the collection.
223 * @param {Number} index The index to insert the item at.
224 * @param {String} key The key to associate with the new item, or the item itself.
225 * @param {Object} o (optional) If the second parameter was a key, the new item.
226 * @return {Object} The item inserted.
228 insert : function(index, key, o){
229 if(arguments.length == 2){
231 key = this.getKey(o);
233 if(index >= this.length){
234 return this.add(key, o);
237 this.items.splice(index, 0, o);
238 if(typeof key != "undefined" && key != null){
241 this.keys.splice(index, 0, key);
242 this.fireEvent("add", index, o, key);
247 * Removed an item from the collection.
248 * @param {Object} o The item to remove.
249 * @return {Object} The item removed.
251 remove : function(o){
252 return this.removeAt(this.indexOf(o));
256 * Remove an item from a specified index in the collection.
257 * @param {Number} index The index within the collection of the item to remove.
259 removeAt : function(index){
260 if(index < this.length && index >= 0){
262 var o = this.items[index];
263 this.items.splice(index, 1);
264 var key = this.keys[index];
265 if(typeof key != "undefined"){
266 delete this.map[key];
268 this.keys.splice(index, 1);
269 this.fireEvent("remove", o, key);
274 * Removed an item associated with the passed key fom the collection.
275 * @param {String} key The key of the item to remove.
277 removeKey : function(key){
278 return this.removeAt(this.indexOfKey(key));
282 * Returns the number of items in the collection.
283 * @return {Number} the number of items in the collection.
285 getCount : function(){
290 * Returns index within the collection of the passed Object.
291 * @param {Object} o The item to find the index of.
292 * @return {Number} index of the item.
294 indexOf : function(o){
295 if(!this.items.indexOf){
296 for(var i = 0, len = this.items.length; i < len; i++){
297 if(this.items[i] == o) return i;
301 return this.items.indexOf(o);
306 * Returns index within the collection of the passed key.
307 * @param {String} key The key to find the index of.
308 * @return {Number} index of the key.
310 indexOfKey : function(key){
311 if(!this.keys.indexOf){
312 for(var i = 0, len = this.keys.length; i < len; i++){
313 if(this.keys[i] == key) return i;
317 return this.keys.indexOf(key);
322 * Returns the item associated with the passed key OR index. Key has priority over index.
323 * @param {String/Number} key The key or index of the item.
324 * @return {Object} The item associated with the passed key.
326 item : function(key){
327 var item = typeof this.map[key] != "undefined" ? this.map[key] : this.items[key];
328 return typeof item != 'function' || this.allowFunctions ? item : null; // for prototype!
332 * Returns the item at the specified index.
333 * @param {Number} index The index of the item.
336 itemAt : function(index){
337 return this.items[index];
341 * Returns the item associated with the passed key.
342 * @param {String/Number} key The key of the item.
343 * @return {Object} The item associated with the passed key.
346 return this.map[key];
350 * Returns true if the collection contains the passed Object as an item.
351 * @param {Object} o The Object to look for in the collection.
352 * @return {Boolean} True if the collection contains the Object as an item.
354 contains : function(o){
355 return this.indexOf(o) != -1;
359 * Returns true if the collection contains the passed Object as a key.
360 * @param {String} key The key to look for in the collection.
361 * @return {Boolean} True if the collection contains the Object as a key.
363 containsKey : function(key){
364 return typeof this.map[key] != "undefined";
368 * Removes all items from the collection.
375 this.fireEvent("clear");
379 * Returns the first item in the collection.
380 * @return {Object} the first item in the collection..
383 return this.items[0];
387 * Returns the last item in the collection.
388 * @return {Object} the last item in the collection..
391 return this.items[this.length-1];
394 _sort : function(property, dir, fn){
395 var dsc = String(dir).toUpperCase() == "DESC" ? -1 : 1;
396 fn = fn || function(a, b){
399 var c = [], k = this.keys, items = this.items;
400 for(var i = 0, len = items.length; i < len; i++){
401 c[c.length] = {key: k[i], value: items[i], index: i};
403 c.sort(function(a, b){
404 var v = fn(a[property], b[property]) * dsc;
406 v = (a.index < b.index ? -1 : 1);
410 for(var i = 0, len = c.length; i < len; i++){
411 items[i] = c[i].value;
414 this.fireEvent("sort", this);
418 * Sorts this collection with the passed comparison function
419 * @param {String} direction (optional) "ASC" or "DESC"
420 * @param {Function} fn (optional) comparison function
422 sort : function(dir, fn){
423 this._sort("value", dir, fn);
427 * Sorts this collection by keys
428 * @param {String} direction (optional) "ASC" or "DESC"
429 * @param {Function} fn (optional) a comparison function (defaults to case insensitive string)
431 keySort : function(dir, fn){
432 this._sort("key", dir, fn || function(a, b){
433 return String(a).toUpperCase()-String(b).toUpperCase();
438 * Returns a range of items in this collection
439 * @param {Number} startIndex (optional) defaults to 0
440 * @param {Number} endIndex (optional) default to the last item
441 * @return {Array} An array of items
443 getRange : function(start, end){
444 var items = this.items;
445 if(items.length < 1){
449 end = Math.min(typeof end == "undefined" ? this.length-1 : end, this.length-1);
452 for(var i = start; i <= end; i++) {
453 r[r.length] = items[i];
456 for(var i = start; i >= end; i--) {
457 r[r.length] = items[i];
464 * Filter the <i>objects</i> in this collection by a specific property.
465 * Returns a new collection that has been filtered.
466 * @param {String} property A property on your objects
467 * @param {String/RegExp} value Either string that the property values
468 * should start with or a RegExp to test against the property
469 * @return {MixedCollection} The new filtered collection
471 filter : function(property, value){
472 if(!value.exec){ // not a regex
473 value = String(value);
474 if(value.length == 0){
477 value = new RegExp("^" + Roo.escapeRe(value), "i");
479 return this.filterBy(function(o){
480 return o && value.test(o[property]);
485 * Filter by a function. * Returns a new collection that has been filtered.
486 * The passed function will be called with each
487 * object in the collection. If the function returns true, the value is included
488 * otherwise it is filtered.
489 * @param {Function} fn The function to be called, it will receive the args o (the object), k (the key)
490 * @param {Object} scope (optional) The scope of the function (defaults to this)
491 * @return {MixedCollection} The new filtered collection
493 filterBy : function(fn, scope){
494 var r = new Roo.util.MixedCollection();
495 r.getKey = this.getKey;
496 var k = this.keys, it = this.items;
497 for(var i = 0, len = it.length; i < len; i++){
498 if(fn.call(scope||this, it[i], k[i])){
506 * Creates a duplicate of this collection
507 * @return {MixedCollection}
510 var r = new Roo.util.MixedCollection();
511 var k = this.keys, it = this.items;
512 for(var i = 0, len = it.length; i < len; i++){
515 r.getKey = this.getKey;
520 * Returns the item associated with the passed key or index.
522 * @param {String/Number} key The key or index of the item.
523 * @return {Object} The item associated with the passed key.
525 Roo.util.MixedCollection.prototype.get = Roo.util.MixedCollection.prototype.item;