740 lines
26 KiB
JavaScript
740 lines
26 KiB
JavaScript
/**
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* @private
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*/
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Ext.define('Ext.util.AbstractMixedCollection', {
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requires: ['Ext.util.Filter'],
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mixins: {
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observable: 'Ext.mixin.Observable'
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},
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/**
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* @event clear
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* Fires when the collection is cleared.
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*/
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/**
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* @event add
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* Fires when an item is added to the collection.
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* @param {Number} index The index at which the item was added.
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* @param {Object} o The item added.
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* @param {String} key The key associated with the added item.
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*/
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/**
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* @event replace
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* Fires when an item is replaced in the collection.
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* @param {String} key he key associated with the new added.
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* @param {Object} old The item being replaced.
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* @param {Object} new The new item.
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*/
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/**
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* @event remove
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* Fires when an item is removed from the collection.
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* @param {Object} o The item being removed.
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* @param {String} key (optional) The key associated with the removed item.
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*/
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/**
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* Creates new MixedCollection.
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* @param {Boolean} [allowFunctions=false] Specify `true` if the {@link #addAll}
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* function should add function references to the collection.
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* @param {Function} [keyFn] A function that can accept an item of the type(s) stored in this MixedCollection
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* and return the key value for that item. This is used when available to look up the key on items that
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* were passed without an explicit key parameter to a MixedCollection method. Passing this parameter is
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* equivalent to providing an implementation for the {@link #getKey} method.
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*/
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constructor: function(allowFunctions, keyFn) {
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var me = this;
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me.items = [];
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me.map = {};
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me.keys = [];
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me.length = 0;
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me.allowFunctions = allowFunctions === true;
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if (keyFn) {
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me.getKey = keyFn;
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}
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me.mixins.observable.constructor.call(me);
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},
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/**
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* @cfg {Boolean} allowFunctions Specify `true` if the {@link #addAll}
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* function should add function references to the collection.
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*/
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allowFunctions : false,
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/**
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* Adds an item to the collection. Fires the {@link #event-add} event when complete.
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* @param {String} key The key to associate with the item, or the new item.
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*
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* If a {@link #getKey} implementation was specified for this MixedCollection,
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* or if the key of the stored items is in a property called `id`,
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* the MixedCollection will be able to _derive_ the key for the new item.
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* In this case just pass the new item in this parameter.
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* @param {Object} obj The item to add.
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* @return {Object} The item added.
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*/
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add: function(key, obj){
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var me = this,
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myObj = obj,
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myKey = key,
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old;
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if (arguments.length == 1) {
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myObj = myKey;
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myKey = me.getKey(myObj);
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}
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if (typeof myKey != 'undefined' && myKey !== null) {
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old = me.map[myKey];
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if (typeof old != 'undefined') {
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return me.replace(myKey, myObj);
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}
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me.map[myKey] = myObj;
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}
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me.length++;
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me.items.push(myObj);
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me.keys.push(myKey);
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me.fireEvent('add', me.length - 1, myObj, myKey);
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return myObj;
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},
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/**
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* MixedCollection has a generic way to fetch keys if you implement `getKey`. The default implementation
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* simply returns `item.id` but you can provide your own implementation
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* to return a different value as in the following examples:
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*
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* // normal way
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* var mc = new Ext.util.MixedCollection();
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* mc.add(someEl.dom.id, someEl);
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* mc.add(otherEl.dom.id, otherEl);
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* //and so on
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*
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* // using getKey
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* var mc = new Ext.util.MixedCollection();
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* mc.getKey = function(el) {
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* return el.dom.id;
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* };
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* mc.add(someEl);
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* mc.add(otherEl);
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*
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* // or via the constructor
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* var mc = new Ext.util.MixedCollection(false, function(el) {
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* return el.dom.id;
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* });
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* mc.add(someEl);
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* mc.add(otherEl);
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*
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* @param {Object} item The item for which to find the key.
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* @return {Object} The key for the passed item.
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*/
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getKey: function(o){
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return o.id;
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},
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/**
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* Replaces an item in the collection. Fires the {@link #event-replace} event when complete.
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* @param {String} key The key associated with the item to replace, or the replacement item.
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*
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* If you supplied a {@link #getKey} implementation for this MixedCollection, or if the key
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* of your stored items is in a property called `id`, then the MixedCollection
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* will be able to _derive_ the key of the replacement item. If you want to replace an item
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* with one having the same key value, then just pass the replacement item in this parameter.
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* @param {Object} o (optional) If the first parameter passed was a key, the item to associate
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* with that key.
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* @return {Object} The new item.
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*/
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replace: function(key, o){
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var me = this,
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old,
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index;
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if (arguments.length == 1) {
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o = arguments[0];
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key = me.getKey(o);
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}
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old = me.map[key];
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if (typeof key == 'undefined' || key === null || typeof old == 'undefined') {
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return me.add(key, o);
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}
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index = me.indexOfKey(key);
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me.items[index] = o;
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me.map[key] = o;
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me.fireEvent('replace', key, old, o);
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return o;
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},
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/**
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* Adds all elements of an Array or an Object to the collection.
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* @param {Object/Array} objs An Object containing properties which will be added
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* to the collection, or an Array of values, each of which are added to the collection.
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* Functions references will be added to the collection if `{@link #allowFunctions}`
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* has been set to `true`.
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*/
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addAll: function(objs){
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var me = this,
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i = 0,
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args,
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len,
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key;
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if (arguments.length > 1 || Ext.isArray(objs)) {
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args = arguments.length > 1 ? arguments : objs;
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for (len = args.length; i < len; i++) {
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me.add(args[i]);
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}
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} else {
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for (key in objs) {
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if (objs.hasOwnProperty(key)) {
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if (me.allowFunctions || typeof objs[key] != 'function') {
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me.add(key, objs[key]);
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}
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}
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}
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}
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},
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/**
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* Executes the specified function once for every item in the collection.
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*
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* @param {Function} fn The function to execute for each item.
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* @param {Mixed} fn.item The collection item.
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* @param {Number} fn.index The item's index.
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* @param {Number} fn.length The total number of items in the collection.
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* @param {Boolean} fn.return Returning `false` will stop the iteration.
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* @param {Object} scope (optional) The scope (`this` reference) in which the function is executed.
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* Defaults to the current item in the iteration.
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*/
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each: function(fn, scope){
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var items = [].concat(this.items), // each safe for removal
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i = 0,
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len = items.length,
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item;
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for (; i < len; i++) {
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item = items[i];
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if (fn.call(scope || item, item, i, len) === false) {
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break;
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}
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}
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},
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/**
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* Executes the specified function once for every key in the collection, passing each
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* key, and its associated item as the first two parameters.
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* @param {Function} fn The function to execute for each item.
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* @param {Object} scope (optional) The scope (`this` reference) in which the function is executed. Defaults to the browser window.
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*/
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eachKey: function(fn, scope){
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var keys = this.keys,
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items = this.items,
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i = 0,
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len = keys.length;
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for (; i < len; i++) {
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fn.call(scope || window, keys[i], items[i], i, len);
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}
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},
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/**
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* Returns the first item in the collection which elicits a `true` return value from the
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* passed selection function.
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* @param {Function} fn The selection function to execute for each item.
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* @param {Object} scope (optional) The scope (`this` reference) in which the function is executed. Defaults to the browser window.
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* @return {Object} The first item in the collection which returned `true` from the selection function.
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*/
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findBy: function(fn, scope) {
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var keys = this.keys,
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items = this.items,
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i = 0,
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len = items.length;
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for (; i < len; i++) {
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if (fn.call(scope || window, items[i], keys[i])) {
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return items[i];
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}
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}
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return null;
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},
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/**
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* Inserts an item at the specified index in the collection. Fires the `{@link #event-add}` event when complete.
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* @param {Number} index The index to insert the item at.
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* @param {String} key The key to associate with the new item, or the item itself.
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* @param {Object} [obj] If the second parameter was a key, the new item.
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* @return {Object} The item inserted.
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*/
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insert: function(index, key, obj){
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var me = this,
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myKey = key,
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myObj = obj;
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if (arguments.length == 2) {
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myObj = myKey;
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myKey = me.getKey(myObj);
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}
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if (me.containsKey(myKey)) {
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me.suspendEvents();
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me.removeAtKey(myKey);
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me.resumeEvents();
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}
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if (index >= me.length) {
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return me.add(myKey, myObj);
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}
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me.length++;
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Ext.Array.splice(me.items, index, 0, myObj);
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if (typeof myKey != 'undefined' && myKey !== null) {
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me.map[myKey] = myObj;
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}
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Ext.Array.splice(me.keys, index, 0, myKey);
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me.fireEvent('add', index, myObj, myKey);
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return myObj;
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},
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/**
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* Remove an item from the collection.
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* @param {Object} o The item to remove.
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* @return {Object} The item removed or `false` if no item was removed.
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*/
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remove: function(o){
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return this.removeAt(this.indexOf(o));
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},
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/**
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* Remove all items in the passed array from the collection.
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* @param {Array} items An array of items to be removed.
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* @return {Ext.util.MixedCollection} this object
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*/
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removeAll: function(items){
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Ext.each(items || [], function(item) {
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this.remove(item);
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}, this);
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return this;
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},
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/**
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* Remove an item from a specified index in the collection. Fires the `{@link #event-remove}` event when complete.
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* @param {Number} index The index within the collection of the item to remove.
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* @return {Object/Boolean} The item removed or `false` if no item was removed.
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*/
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removeAt: function(index){
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var me = this,
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o,
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key;
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if (index < me.length && index >= 0) {
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me.length--;
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o = me.items[index];
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Ext.Array.erase(me.items, index, 1);
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key = me.keys[index];
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if (typeof key != 'undefined') {
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delete me.map[key];
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}
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Ext.Array.erase(me.keys, index, 1);
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me.fireEvent('remove', o, key);
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return o;
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}
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return false;
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},
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/**
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* Removed an item associated with the passed key from the collection.
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* @param {String} key The key of the item to remove.
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* @return {Object/Boolean} The item removed or `false` if no item was removed.
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*/
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removeAtKey: function(key){
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return this.removeAt(this.indexOfKey(key));
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},
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/**
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* Returns the number of items in the collection.
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* @return {Number} the number of items in the collection.
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*/
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getCount: function(){
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return this.length;
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},
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/**
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* Returns index within the collection of the passed Object.
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* @param {Object} o The item to find the index of.
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* @return {Number} index of the item. Returns -1 if not found.
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*/
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indexOf: function(o){
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return Ext.Array.indexOf(this.items, o);
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},
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/**
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* Returns index within the collection of the passed key.
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* @param {String} key The key to find the index of.
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* @return {Number} The index of the key.
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*/
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indexOfKey: function(key){
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return Ext.Array.indexOf(this.keys, key);
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},
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/**
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* Returns the item associated with the passed key OR index.
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* Key has priority over index. This is the equivalent
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* of calling {@link #getByKey} first, then if nothing matched calling {@link #getAt}.
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* @param {String/Number} key The key or index of the item.
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* @return {Object} If the item is found, returns the item. If the item was not found, returns `undefined`.
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* If an item was found, but is a Class, returns `null`.
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*/
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get: function(key) {
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var me = this,
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mk = me.map[key],
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item = mk !== undefined ? mk : (typeof key == 'number') ? me.items[key] : undefined;
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return typeof item != 'function' || me.allowFunctions ? item : null; // for prototype!
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},
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/**
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* Returns the item at the specified index.
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* @param {Number} index The index of the item.
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* @return {Object} The item at the specified index.
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*/
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getAt: function(index) {
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return this.items[index];
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},
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/**
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* Returns the item associated with the passed key.
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* @param {String/Number} key The key of the item.
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* @return {Object} The item associated with the passed key.
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*/
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getByKey: function(key) {
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return this.map[key];
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},
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/**
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* Returns `true` if the collection contains the passed Object as an item.
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* @param {Object} o The Object to look for in the collection.
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* @return {Boolean} `true` if the collection contains the Object as an item.
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*/
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contains: function(o){
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return Ext.Array.contains(this.items, o);
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},
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/**
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* Returns `true` if the collection contains the passed Object as a key.
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* @param {String} key The key to look for in the collection.
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* @return {Boolean} `true` if the collection contains the Object as a key.
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*/
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containsKey: function(key){
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return typeof this.map[key] != 'undefined';
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},
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/**
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* Removes all items from the collection. Fires the `{@link #event-clear}` event when complete.
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*/
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clear: function(){
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var me = this;
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me.length = 0;
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me.items = [];
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me.keys = [];
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me.map = {};
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me.fireEvent('clear');
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},
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/**
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* Returns the first item in the collection.
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* @return {Object} the first item in the collection..
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*/
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first: function() {
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return this.items[0];
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},
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/**
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* Returns the last item in the collection.
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* @return {Object} the last item in the collection..
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*/
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last: function() {
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return this.items[this.length - 1];
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},
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/**
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* Collects all of the values of the given property and returns their sum.
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* @param {String} property The property to sum by.
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* @param {String} [root] Optional 'root' property to extract the first argument from. This is used mainly when
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* summing fields in records, where the fields are all stored inside the `data` object
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* @param {Number} [start=0] (optional) The record index to start at.
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* @param {Number} [end=-1] (optional) The record index to end at.
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* @return {Number} The total
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*/
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sum: function(property, root, start, end) {
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var values = this.extractValues(property, root),
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length = values.length,
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sum = 0,
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i;
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start = start || 0;
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end = (end || end === 0) ? end : length - 1;
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for (i = start; i <= end; i++) {
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sum += values[i];
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}
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return sum;
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},
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/**
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* Collects unique values of a particular property in this MixedCollection.
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* @param {String} property The property to collect on.
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* @param {String} [root] Optional 'root' property to extract the first argument from. This is used mainly when
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* summing fields in records, where the fields are all stored inside the `data` object.
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* @param {Boolean} [allowNull] Pass `true` to allow `null`, `undefined`, or empty string values.
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* @return {Array} The unique values.
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*/
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collect: function(property, root, allowNull) {
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var values = this.extractValues(property, root),
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length = values.length,
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hits = {},
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unique = [],
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value, strValue, i;
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for (i = 0; i < length; i++) {
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value = values[i];
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strValue = String(value);
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if ((allowNull || !Ext.isEmpty(value)) && !hits[strValue]) {
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hits[strValue] = true;
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unique.push(value);
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}
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}
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return unique;
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},
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/**
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* @private
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* Extracts all of the given property values from the items in the MixedCollection. Mainly used as a supporting method for
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* functions like `sum()` and `collect()`.
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* @param {String} property The property to extract.
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* @param {String} [root] Optional 'root' property to extract the first argument from. This is used mainly when
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* extracting field data from Model instances, where the fields are stored inside the `data` object.
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* @return {Array} The extracted values.
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*/
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extractValues: function(property, root) {
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var values = this.items;
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if (root) {
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values = Ext.Array.pluck(values, root);
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}
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|
return Ext.Array.pluck(values, property);
|
|
},
|
|
|
|
/**
|
|
* Returns a range of items in this collection.
|
|
* @param {Number} [start=0] The starting index.
|
|
* @param {Number} [end=-1] The ending index.
|
|
* @return {Array} An array of items
|
|
*/
|
|
getRange: function(start, end){
|
|
var me = this,
|
|
items = me.items,
|
|
range = [],
|
|
i;
|
|
|
|
if (items.length < 1) {
|
|
return range;
|
|
}
|
|
|
|
start = start || 0;
|
|
end = Math.min(typeof end == 'undefined' ? me.length - 1 : end, me.length - 1);
|
|
if (start <= end) {
|
|
for (i = start; i <= end; i++) {
|
|
range[range.length] = items[i];
|
|
}
|
|
} else {
|
|
for (i = start; i >= end; i--) {
|
|
range[range.length] = items[i];
|
|
}
|
|
}
|
|
return range;
|
|
},
|
|
|
|
/**
|
|
* Filters the objects in this collection by a set of {@link Ext.util.Filter Filter}s, or by a single
|
|
* property/value pair with optional parameters for substring matching and case sensitivity. See
|
|
* {@link Ext.util.Filter Filter} for an example of using Filter objects (preferred). Alternatively,
|
|
* MixedCollection can be easily filtered by property like this:
|
|
*
|
|
* // create a simple store with a few people defined
|
|
* var people = new Ext.util.MixedCollection();
|
|
* people.addAll([
|
|
* {id: 1, age: 25, name: 'Ed'},
|
|
* {id: 2, age: 24, name: 'Tommy'},
|
|
* {id: 3, age: 24, name: 'Arne'},
|
|
* {id: 4, age: 26, name: 'Aaron'}
|
|
* ]);
|
|
*
|
|
* // a new MixedCollection containing only the items where age == 24
|
|
* var middleAged = people.filter('age', 24);
|
|
*
|
|
* @param {Ext.util.Filter[]/String} property A property on your objects, or an array of {@link Ext.util.Filter Filter} objects
|
|
* @param {String/RegExp} value Either string that the property values
|
|
* should start with or a RegExp to test against the property.
|
|
* @param {Boolean} anyMatch (optional) `true` to match any part of the string, not just the beginning
|
|
* @param {Boolean} [caseSensitive=false] (optional) `true` for case sensitive comparison.
|
|
* @return {Ext.util.MixedCollection} The new filtered collection
|
|
*/
|
|
filter: function(property, value, anyMatch, caseSensitive) {
|
|
var filters = [],
|
|
filterFn;
|
|
|
|
//support for the simple case of filtering by property/value
|
|
if (Ext.isString(property)) {
|
|
filters.push(Ext.create('Ext.util.Filter', {
|
|
property : property,
|
|
value : value,
|
|
anyMatch : anyMatch,
|
|
caseSensitive: caseSensitive
|
|
}));
|
|
} else if (Ext.isArray(property) || property instanceof Ext.util.Filter) {
|
|
filters = filters.concat(property);
|
|
}
|
|
|
|
//at this point we have an array of zero or more Ext.util.Filter objects to filter with,
|
|
//so here we construct a function that combines these filters by ANDing them together
|
|
filterFn = function(record) {
|
|
var isMatch = true,
|
|
length = filters.length,
|
|
i;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
var filter = filters[i],
|
|
fn = filter.getFilterFn(),
|
|
scope = filter.getScope();
|
|
|
|
isMatch = isMatch && fn.call(scope, record);
|
|
}
|
|
|
|
return isMatch;
|
|
};
|
|
|
|
return this.filterBy(filterFn);
|
|
},
|
|
|
|
/**
|
|
* Filter by a function. Returns a _new_ collection that has been filtered.
|
|
* The passed function will be called with each object in the collection.
|
|
* If the function returns `true`, the value is included otherwise it is filtered.
|
|
* @param {Function} fn The function to be called, it will receive the args `o` (the object), `k` (the key)
|
|
* @param {Object} scope (optional) The scope (`this` reference) in which the function is executed. Defaults to this MixedCollection.
|
|
* @return {Ext.util.MixedCollection} The new filtered collection.
|
|
*/
|
|
filterBy: function(fn, scope) {
|
|
var me = this,
|
|
newMC = new this.self(),
|
|
keys = me.keys,
|
|
items = me.items,
|
|
length = items.length,
|
|
i;
|
|
|
|
newMC.getKey = me.getKey;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
if (fn.call(scope || me, items[i], keys[i])) {
|
|
newMC.add(keys[i], items[i]);
|
|
}
|
|
}
|
|
|
|
return newMC;
|
|
},
|
|
|
|
/**
|
|
* Finds the index of the first matching object in this collection by a specific property/value.
|
|
* @param {String} property The name of a property on your objects.
|
|
* @param {String/RegExp} value A string that the property values.
|
|
* should start with or a RegExp to test against the property.
|
|
* @param {Number} [start=0] (optional) The index to start searching at.
|
|
* @param {Boolean} anyMatch (optional) `true` to match any part of the string, not just the beginning.
|
|
* @param {Boolean} caseSensitive (optional) `true` for case sensitive comparison.
|
|
* @return {Number} The matched index or -1.
|
|
*/
|
|
findIndex: function(property, value, start, anyMatch, caseSensitive){
|
|
if(Ext.isEmpty(value, false)){
|
|
return -1;
|
|
}
|
|
value = this.createValueMatcher(value, anyMatch, caseSensitive);
|
|
return this.findIndexBy(function(o){
|
|
return o && value.test(o[property]);
|
|
}, null, start);
|
|
},
|
|
|
|
/**
|
|
* Find the index of the first matching object in this collection by a function.
|
|
* If the function returns `true` it is considered a match.
|
|
* @param {Function} fn The function to be called, it will receive the args `o` (the object), `k` (the key).
|
|
* @param {Object} scope (optional) The scope (`this` reference) in which the function is executed. Defaults to this MixedCollection.
|
|
* @param {Number} [start=0] (optional) The index to start searching at.
|
|
* @return {Number} The matched index or -1.
|
|
*/
|
|
findIndexBy: function(fn, scope, start){
|
|
var me = this,
|
|
keys = me.keys,
|
|
items = me.items,
|
|
i = start || 0,
|
|
len = items.length;
|
|
|
|
for (; i < len; i++) {
|
|
if (fn.call(scope || me, items[i], keys[i])) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
},
|
|
|
|
/**
|
|
* Returns a regular expression based on the given value and matching options. This is used internally for finding and filtering,
|
|
* and by Ext.data.Store#filter
|
|
* @private
|
|
* @param {String} value The value to create the regex for. This is escaped using Ext.escapeRe
|
|
* @param {Boolean} [anyMatch=false] `true` to allow any match - no regex start/end line anchors will be added.
|
|
* @param {Boolean} [caseSensitive=false] `true` to make the regex case sensitive (adds 'i' switch to regex).
|
|
* @param {Boolean} [exactMatch=false] `true` to force exact match (^ and $ characters added to the regex). Ignored if `anyMatch` is `true`.
|
|
*/
|
|
createValueMatcher: function(value, anyMatch, caseSensitive, exactMatch) {
|
|
if (!value.exec) { // not a regex
|
|
var er = Ext.String.escapeRegex;
|
|
value = String(value);
|
|
|
|
if (anyMatch === true) {
|
|
value = er(value);
|
|
} else {
|
|
value = '^' + er(value);
|
|
if (exactMatch === true) {
|
|
value += '$';
|
|
}
|
|
}
|
|
value = new RegExp(value, caseSensitive ? '' : 'i');
|
|
}
|
|
return value;
|
|
},
|
|
|
|
/**
|
|
* Creates a shallow copy of this collection.
|
|
* @return {Ext.util.MixedCollection}
|
|
*/
|
|
clone: function() {
|
|
var me = this,
|
|
copy = new this.self(),
|
|
keys = me.keys,
|
|
items = me.items,
|
|
i = 0,
|
|
len = items.length;
|
|
|
|
for(; i < len; i++){
|
|
copy.add(keys[i], items[i]);
|
|
}
|
|
copy.getKey = me.getKey;
|
|
return copy;
|
|
}
|
|
});
|