X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/c930e9176a5a85509c5b0230e2bff5c22a591432..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/docs/source/MixedCollection.html diff --git a/docs/source/MixedCollection.html b/docs/source/MixedCollection.html index edecd201..9ddccf36 100644 --- a/docs/source/MixedCollection.html +++ b/docs/source/MixedCollection.html @@ -1,579 +1,204 @@ - - - The source code - - - - -
/** - * @class Ext.util.MixedCollection - * @extends Ext.util.Observable - * A Collection class that maintains both numeric indexes and keys and exposes events. - * @constructor - * @param {Boolean} allowFunctions True if the addAll function should add function references to the - * collection (defaults to false) - * @param {Function} keyFn A function that can accept an item of the type(s) stored in this MixedCollection - * and return the key value for that item. This is used when available to look up the key on items that - * were passed without an explicit key parameter to a MixedCollection method. Passing this parameter is - * equivalent to providing an implementation for the {@link #getKey} method. - */ -Ext.util.MixedCollection = function(allowFunctions, keyFn){ - this.items = []; - this.map = {}; - this.keys = []; - this.length = 0; - this.addEvents( -
/** - * @event clear - * Fires when the collection is cleared. - */ - "clear", -
/** - * @event add - * Fires when an item is added to the collection. - * @param {Number} index The index at which the item was added. - * @param {Object} o The item added. - * @param {String} key The key associated with the added item. - */ - "add", -
/** - * @event replace - * Fires when an item is replaced in the collection. - * @param {String} key he key associated with the new added. - * @param {Object} old The item being replaced. - * @param {Object} new The new item. - */ - "replace", -
/** - * @event remove - * Fires when an item is removed from the collection. - * @param {Object} o The item being removed. - * @param {String} key (optional) The key associated with the removed item. - */ - "remove", - "sort" - ); - this.allowFunctions = allowFunctions === true; - if(keyFn){ - this.getKey = keyFn; - } - Ext.util.MixedCollection.superclass.constructor.call(this); -}; - -Ext.extend(Ext.util.MixedCollection, Ext.util.Observable, { - allowFunctions : false, - -
/** - * Adds an item to the collection. Fires the {@link #add} event when complete. - * @param {String} key

The key to associate with the item, or the new item.

- *

If you supplied a {@link #getKey} implementation for this MixedCollection, or if the key - * of your stored items is in a property called id, then the MixedCollection - * will be able to derive the key for the new item. In this case just pass the new item in - * this parameter.

- * @param {Object} o The item to add. - * @return {Object} The item added. - */ - add: function(key, o){ - if(arguments.length == 1){ - o = arguments[0]; - key = this.getKey(o); - } - if(typeof key != 'undefined' && key !== null){ - var old = this.map[key]; - if(typeof old != 'undefined'){ - return this.replace(key, o); - } - this.map[key] = o; - } - this.length++; - this.items.push(o); - this.keys.push(key); - this.fireEvent('add', this.length-1, o, key); - return o; - }, - -
/** - * MixedCollection has a generic way to fetch keys if you implement getKey. The default implementation - * simply returns item.id but you can provide your own implementation - * to return a different value as in the following examples: -

-// normal way
-var mc = new Ext.util.MixedCollection();
-mc.add(someEl.dom.id, someEl);
-mc.add(otherEl.dom.id, otherEl);
-//and so on
-
-// using getKey
-var mc = new Ext.util.MixedCollection();
-mc.getKey = function(el){
-   return el.dom.id;
-};
-mc.add(someEl);
-mc.add(otherEl);
-
-// or via the constructor
-var mc = new Ext.util.MixedCollection(false, function(el){
-   return el.dom.id;
-});
-mc.add(someEl);
-mc.add(otherEl);
-
- * @param {Object} item The item for which to find the key. - * @return {Object} The key for the passed item. - */ - getKey : function(o){ - return o.id; - }, - -
/** - * Replaces an item in the collection. Fires the {@link #replace} event when complete. - * @param {String} key

The key associated with the item to replace, or the replacement item.

- *

If you supplied a {@link #getKey} implementation for this MixedCollection, or if the key - * of your stored items is in a property called id, then the MixedCollection - * will be able to derive the key of the replacement item. If you want to replace an item - * with one having the same key value, then just pass the replacement item in this parameter.

- * @param o {Object} o (optional) If the first parameter passed was a key, the item to associate - * with that key. - * @return {Object} The new item. - */ - replace : function(key, o){ - if(arguments.length == 1){ - o = arguments[0]; - key = this.getKey(o); - } - var old = this.map[key]; - if(typeof key == "undefined" || key === null || typeof old == "undefined"){ - return this.add(key, o); - } - var index = this.indexOfKey(key); - this.items[index] = o; - this.map[key] = o; - this.fireEvent("replace", key, old, o); - return o; - }, - -
/** - * Adds all elements of an Array or an Object to the collection. - * @param {Object/Array} objs An Object containing properties which will be added to the collection, or - * an Array of values, each of which are added to the collection. - */ - addAll : function(objs){ - if(arguments.length > 1 || Ext.isArray(objs)){ - var args = arguments.length > 1 ? arguments : objs; - for(var i = 0, len = args.length; i < len; i++){ - this.add(args[i]); - } - }else{ - for(var key in objs){ - if(this.allowFunctions || typeof objs[key] != "function"){ - this.add(key, objs[key]); - } - } - } - }, - -
/** - * Executes the specified function once for every item in the collection, passing the following arguments: - *
- * The function should return a boolean value. Returning false from the function will stop the iteration. - * @param {Function} fn The function to execute for each item. - * @param {Object} scope (optional) The scope in which to execute the function. - */ - each : function(fn, scope){ - var items = [].concat(this.items); // each safe for removal - for(var i = 0, len = items.length; i < len; i++){ - if(fn.call(scope || items[i], items[i], i, len) === false){ - break; - } - } - }, - -
/** - * Executes the specified function once for every key in the collection, passing each - * key, and its associated item as the first two parameters. - * @param {Function} fn The function to execute for each item. - * @param {Object} scope (optional) The scope in which to execute the function. - */ - eachKey : function(fn, scope){ - for(var i = 0, len = this.keys.length; i < len; i++){ - fn.call(scope || window, this.keys[i], this.items[i], i, len); - } - }, - -
/** - * Returns the first item in the collection which elicits a true return value from the - * passed selection function. - * @param {Function} fn The selection function to execute for each item. - * @param {Object} scope (optional) The scope in which to execute the function. - * @return {Object} The first item in the collection which returned true from the selection function. - */ - find : function(fn, scope){ - for(var i = 0, len = this.items.length; i < len; i++){ - if(fn.call(scope || window, this.items[i], this.keys[i])){ - return this.items[i]; - } - } - return null; - }, - -
/** - * Inserts an item at the specified index in the collection. Fires the {@link #add} event when complete. - * @param {Number} index The index to insert the item at. - * @param {String} key The key to associate with the new item, or the item itself. - * @param {Object} o (optional) If the second parameter was a key, the new item. - * @return {Object} The item inserted. - */ - insert : function(index, key, o){ - if(arguments.length == 2){ - o = arguments[1]; - key = this.getKey(o); - } - if(this.containsKey(key)){ - this.suspendEvents(); - this.removeKey(key); - this.resumeEvents(); - } - if(index >= this.length){ - return this.add(key, o); - } - this.length++; - this.items.splice(index, 0, o); - if(typeof key != "undefined" && key !== null){ - this.map[key] = o; - } - this.keys.splice(index, 0, key); - this.fireEvent("add", index, o, key); - return o; - }, - -
/** - * Remove an item from the collection. - * @param {Object} o The item to remove. - * @return {Object} The item removed or false if no item was removed. - */ - remove : function(o){ - return this.removeAt(this.indexOf(o)); - }, - -
/** - * Remove an item from a specified index in the collection. Fires the {@link #remove} event when complete. - * @param {Number} index The index within the collection of the item to remove. - * @return {Object} The item removed or false if no item was removed. - */ - removeAt : function(index){ - if(index < this.length && index >= 0){ - this.length--; - var o = this.items[index]; - this.items.splice(index, 1); - var key = this.keys[index]; - if(typeof key != "undefined"){ - delete this.map[key]; - } - this.keys.splice(index, 1); - this.fireEvent("remove", o, key); - return o; - } - return false; - }, - -
/** - * Removed an item associated with the passed key fom the collection. - * @param {String} key The key of the item to remove. - * @return {Object} The item removed or false if no item was removed. - */ - removeKey : function(key){ - return this.removeAt(this.indexOfKey(key)); - }, - -
/** - * Returns the number of items in the collection. - * @return {Number} the number of items in the collection. - */ - getCount : function(){ - return this.length; - }, - -
/** - * Returns index within the collection of the passed Object. - * @param {Object} o The item to find the index of. - * @return {Number} index of the item. Returns -1 if not found. - */ - indexOf : function(o){ - return this.items.indexOf(o); - }, - -
/** - * Returns index within the collection of the passed key. - * @param {String} key The key to find the index of. - * @return {Number} index of the key. - */ - indexOfKey : function(key){ - return this.keys.indexOf(key); - }, - -
/** - * Returns the item associated with the passed key OR index. Key has priority over index. This is the equivalent - * of calling {@link #key} first, then if nothing matched calling {@link #itemAt}. - * @param {String/Number} key The key or index of the item. - * @return {Object} If the item is found, returns the item. If the item was not found, returns undefined. - * If an item was found, but is a Class, returns null. - */ - item : function(key){ - var mk = this.map[key], - item = mk !== undefined ? mk : (typeof key == 'number') ? this.items[key] : undefined; - return !Ext.isFunction(item) || this.allowFunctions ? item : null; // for prototype! - }, - -
/** - * Returns the item at the specified index. - * @param {Number} index The index of the item. - * @return {Object} The item at the specified index. - */ - itemAt : function(index){ - return this.items[index]; - }, - -
/** - * Returns the item associated with the passed key. - * @param {String/Number} key The key of the item. - * @return {Object} The item associated with the passed key. - */ - key : function(key){ - return this.map[key]; - }, - -
/** - * Returns true if the collection contains the passed Object as an item. - * @param {Object} o The Object to look for in the collection. - * @return {Boolean} True if the collection contains the Object as an item. - */ - contains : function(o){ - return this.indexOf(o) != -1; - }, - -
/** - * Returns true if the collection contains the passed Object as a key. - * @param {String} key The key to look for in the collection. - * @return {Boolean} True if the collection contains the Object as a key. - */ - containsKey : function(key){ - return typeof this.map[key] != "undefined"; - }, - -
/** - * Removes all items from the collection. Fires the {@link #clear} event when complete. - */ - clear : function(){ - this.length = 0; - this.items = []; - this.keys = []; - this.map = {}; - this.fireEvent("clear"); - }, - -
/** - * Returns the first item in the collection. - * @return {Object} the first item in the collection.. - */ - first : function(){ - return this.items[0]; - }, - -
/** - * Returns the last item in the collection. - * @return {Object} the last item in the collection.. - */ - last : function(){ - return this.items[this.length-1]; - }, - - // private - _sort : function(property, dir, fn){ - var i, - len, - dsc = String(dir).toUpperCase() == "DESC" ? -1 : 1, - c = [], k = this.keys, items = this.items; - - fn = fn || function(a, b){ - return a-b; - }; - for(i = 0, len = items.length; i < len; i++){ - c[c.length] = {key: k[i], value: items[i], index: i}; - } - c.sort(function(a, b){ - var v = fn(a[property], b[property]) * dsc; - if(v === 0){ - v = (a.index < b.index ? -1 : 1); - } - return v; - }); - for(i = 0, len = c.length; i < len; i++){ - items[i] = c[i].value; - k[i] = c[i].key; - } - this.fireEvent("sort", this); - }, - -
/** - * Sorts this collection with the passed comparison function - * @param {String} direction (optional) "ASC" or "DESC" - * @param {Function} fn (optional) comparison function - */ - sort : function(dir, fn){ - this._sort("value", dir, fn); - }, - -
/** - * Sorts this collection by keys - * @param {String} direction (optional) "ASC" or "DESC" - * @param {Function} fn (optional) a comparison function (defaults to case insensitive string) - */ - keySort : function(dir, fn){ - this._sort("key", dir, fn || function(a, b){ - var v1 = String(a).toUpperCase(), v2 = String(b).toUpperCase(); - return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0); - }); - }, - -
/** - * Returns a range of items in this collection - * @param {Number} startIndex (optional) defaults to 0 - * @param {Number} endIndex (optional) default to the last item - * @return {Array} An array of items - */ - getRange : function(start, end){ - var items = this.items; - if(items.length < 1){ - return []; - } - start = start || 0; - end = Math.min(typeof end == "undefined" ? this.length-1 : end, this.length-1); - var i, r = []; - if(start <= end){ - for(i = start; i <= end; i++) { - r[r.length] = items[i]; - } - }else{ - for(i = start; i >= end; i--) { - r[r.length] = items[i]; - } - } - return r; - }, - -
/** - * Filter the objects in this collection by a specific property. - * Returns a new collection that has been filtered. - * @param {String} property A property on your 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 (optional) True for case sensitive comparison (defaults to False). - * @return {MixedCollection} The new filtered collection - */ - filter : function(property, value, anyMatch, caseSensitive){ - if(Ext.isEmpty(value, false)){ - return this.clone(); - } - value = this.createValueMatcher(value, anyMatch, caseSensitive); - return this.filterBy(function(o){ - return o && value.test(o[property]); - }); - }, - -
/** - * 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 of the function (defaults to this) - * @return {MixedCollection} The new filtered collection - */ - filterBy : function(fn, scope){ - var r = new Ext.util.MixedCollection(); - r.getKey = this.getKey; - var k = this.keys, it = this.items; - for(var i = 0, len = it.length; i < len; i++){ - if(fn.call(scope||this, it[i], k[i])){ - r.add(k[i], it[i]); - } - } - return r; - }, - -
/** - * 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 (optional) The index to start searching at (defaults to 0). - * @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 of the function (defaults to this). - * @param {Number} start (optional) The index to start searching at (defaults to 0). - * @return {Number} The matched index or -1 - */ - findIndexBy : function(fn, scope, start){ - var k = this.keys, it = this.items; - for(var i = (start||0), len = it.length; i < len; i++){ - if(fn.call(scope||this, it[i], k[i])){ - return i; - } - } - return -1; - }, - - // private - createValueMatcher : function(value, anyMatch, caseSensitive){ - if(!value.exec){ // not a regex - value = String(value); - value = new RegExp((anyMatch === true ? '' : '^') + Ext.escapeRe(value), caseSensitive ? '' : 'i'); - } - return value; - }, - -
/** - * Creates a shallow copy of this collection - * @return {MixedCollection} - */ - clone : function(){ - var r = new Ext.util.MixedCollection(); - var k = this.keys, it = this.items; - for(var i = 0, len = it.length; i < len; i++){ - r.add(k[i], it[i]); - } - r.getKey = this.getKey; - return r; - } -}); -
/** - * This method calls {@link #item item()}. - * Returns the item associated with the passed key OR index. Key has priority over index. This is the equivalent - * of calling {@link #key} first, then if nothing matched calling {@link #itemAt}. - * @param {String/Number} key The key or index of the item. - * @return {Object} If the item is found, returns the item. If the item was not found, returns undefined. - * If an item was found, but is a Class, returns null. - */ -Ext.util.MixedCollection.prototype.get = Ext.util.MixedCollection.prototype.item;
- - \ No newline at end of file +Sencha Documentation Project
/**
+ * @class Ext.util.MixedCollection
+ * <p>
+ * Represents a collection of a set of key and value pairs. Each key in the MixedCollection
+ * must be unique, the same key cannot exist twice. This collection is ordered, items in the
+ * collection can be accessed by index  or via the key. Newly added items are added to
+ * the end of the collection. This class is similar to {@link Ext.util.HashMap} however it
+ * is heavier and provides more functionality. Sample usage:
+ * <pre><code>
+var coll = new Ext.util.MixedCollection();
+coll.add('key1', 'val1');
+coll.add('key2', 'val2');
+coll.add('key3', 'val3');
+
+console.log(coll.get('key1')); // prints 'val1'
+console.log(coll.indexOfKey('key3')); // prints 2
+ * </code></pre>
+ *
+ * <p>
+ * The MixedCollection also has support for sorting and filtering of the values in the collection.
+ * <pre><code>
+var coll = new Ext.util.MixedCollection();
+coll.add('key1', 100);
+coll.add('key2', -100);
+coll.add('key3', 17);
+coll.add('key4', 0);
+var biggerThanZero = coll.filterBy(function(value){
+    return value > 0;
+});
+console.log(biggerThanZero.getCount()); // prints 2
+ * </code></pre>
+ * </p>
+ *
+ * @constructor
+ * @param {Boolean} allowFunctions Specify <tt>true</tt> if the {@link #addAll}
+ * function should add function references to the collection. Defaults to
+ * <tt>false</tt>.
+ * @param {Function} keyFn A function that can accept an item of the type(s) stored in this MixedCollection
+ * and return the key value for that item.  This is used when available to look up the key on items that
+ * were passed without an explicit key parameter to a MixedCollection method.  Passing this parameter is
+ * equivalent to providing an implementation for the {@link #getKey} method.
+ */
+Ext.define('Ext.util.MixedCollection', {
+    extend: 'Ext.util.AbstractMixedCollection',
+    mixins: {
+        sortable: 'Ext.util.Sortable'
+    },
+
+    constructor: function() {
+        var me = this;
+        me.callParent(arguments);
+        me.addEvents('sort');
+        me.mixins.sortable.initSortable.call(me);
+    },
+
+    doSort: function(sorterFn) {
+        this.sortBy(sorterFn);
+    },
+
+    /**
+     * @private
+     * Performs the actual sorting based on a direction and a sorting function. Internally,
+     * this creates a temporary array of all items in the MixedCollection, sorts it and then writes
+     * the sorted array data back into this.items and this.keys
+     * @param {String} property Property to sort by ('key', 'value', or 'index')
+     * @param {String} dir (optional) Direction to sort 'ASC' or 'DESC'. Defaults to 'ASC'.
+     * @param {Function} fn (optional) Comparison function that defines the sort order.
+     * Defaults to sorting by numeric value.
+     */
+    _sort : function(property, dir, fn){
+        var me = this,
+            i, len,
+            dsc   = String(dir).toUpperCase() == 'DESC' ? -1 : 1,
+
+            //this is a temporary array used to apply the sorting function
+            c     = [],
+            keys  = me.keys,
+            items = me.items;
+
+        //default to a simple sorter function if one is not provided
+        fn = fn || function(a, b) {
+            return a - b;
+        };
+
+        //copy all the items into a temporary array, which we will sort
+        for(i = 0, len = items.length; i < len; i++){
+            c[c.length] = {
+                key  : keys[i],
+                value: items[i],
+                index: i
+            };
+        }
+
+        //sort the temporary array
+        Ext.Array.sort(c, function(a, b){
+            var v = fn(a[property], b[property]) * dsc;
+            if(v === 0){
+                v = (a.index < b.index ? -1 : 1);
+            }
+            return v;
+        });
+
+        //copy the temporary array back into the main this.items and this.keys objects
+        for(i = 0, len = c.length; i < len; i++){
+            items[i] = c[i].value;
+            keys[i]  = c[i].key;
+        }
+
+        me.fireEvent('sort', me);
+    },
+
+    /**
+     * Sorts the collection by a single sorter function
+     * @param {Function} sorterFn The function to sort by
+     */
+    sortBy: function(sorterFn) {
+        var me     = this,
+            items  = me.items,
+            keys   = me.keys,
+            length = items.length,
+            temp   = [],
+            i;
+
+        //first we create a copy of the items array so that we can sort it
+        for (i = 0; i < length; i++) {
+            temp[i] = {
+                key  : keys[i],
+                value: items[i],
+                index: i
+            };
+        }
+
+        Ext.Array.sort(temp, function(a, b) {
+            var v = sorterFn(a.value, b.value);
+            if (v === 0) {
+                v = (a.index < b.index ? -1 : 1);
+            }
+
+            return v;
+        });
+
+        //copy the temporary array back into the main this.items and this.keys objects
+        for (i = 0; i < length; i++) {
+            items[i] = temp[i].value;
+            keys[i]  = temp[i].key;
+        }
+        
+        me.fireEvent('sort', me, items, keys);
+    },
+
+    /**
+     * Reorders each of the items based on a mapping from old index to new index. Internally this
+     * just translates into a sort. The 'sort' event is fired whenever reordering has occured.
+     * @param {Object} mapping Mapping from old item index to new item index
+     */
+    reorder: function(mapping) {
+        var me = this,
+            items = me.items,
+            index = 0,
+            length = items.length,
+            order = [],
+            remaining = [],
+            oldIndex;
+
+        me.suspendEvents();
+
+        //object of {oldPosition: newPosition} reversed to {newPosition: oldPosition}
+        for (oldIndex in mapping) {
+            order[mapping[oldIndex]] = items[oldIndex];
+        }
+
+        for (index = 0; index < length; index++) {
+            if (mapping[index] == undefined) {
+                remaining.push(items[index]);
+            }
+        }
+
+        for (index = 0; index < length; index++) {
+            if (order[index] == undefined) {
+                order[index] = remaining.shift();
+            }
+        }
+
+        me.clear();
+        me.addAll(order);
+
+        me.resumeEvents();
+        me.fireEvent('sort', me);
+    },
+
+    /**
+     * Sorts this collection by <b>key</b>s.
+     * @param {String} direction (optional) 'ASC' or 'DESC'. Defaults to 'ASC'.
+     * @param {Function} fn (optional) Comparison function that defines the sort order.
+     * Defaults to sorting by case insensitive string.
+     */
+    sortByKey : function(dir, fn){
+        this._sort('key', dir, fn || function(a, b){
+            var v1 = String(a).toUpperCase(), v2 = String(b).toUpperCase();
+            return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0);
+        });
+    }
+});
+
\ No newline at end of file