2 YUI 3.13.0 (build 508226d)
3 Copyright 2013 Yahoo! Inc. All rights reserved.
4 Licensed under the BSD License.
5 http://yuilibrary.com/license/
8 YUI.add('plugin', function (Y, NAME) {
11 * Provides the base Plugin class, which plugin developers should extend, when creating custom plugins
17 * The base class for all Plugin instances.
21 * @param {Object} config Configuration object with property name/value pairs.
23 function Plugin(config) {
24 if (! (this.hasImpl && this.hasImpl(Y.Plugin.Base)) ) {
25 Plugin.superclass.constructor.apply(this, arguments);
27 Plugin.prototype.initializer.apply(this, arguments);
32 * Object defining the set of attributes supported by the Plugin.Base class
41 * The plugin's host object.
53 * The string identifying the Plugin.Base class. Plugins extending
54 * Plugin.Base should set their own NAME value.
60 Plugin.NAME = 'plugin';
63 * The name of the property the the plugin will be attached to
64 * when plugged into a Plugin Host. Plugins extending Plugin.Base,
65 * should set their own NS value.
73 Y.extend(Plugin, Y.Base, {
76 * The list of event handles for event listeners or AOP injected methods
77 * applied by the plugin to the host object.
87 * Initializer lifecycle implementation.
90 * @param {Object} config Configuration object with property name/value pairs.
92 initializer : function(config) {
97 * Destructor lifecycle implementation.
99 * Removes any event listeners or injected methods applied by the Plugin
103 destructor: function() {
104 // remove all handles
106 for (var i = 0, l = this._handles.length; i < l; i++) {
107 this._handles[i].detach();
113 * Listens for the "on" moment of events fired by the host,
114 * or injects code "before" a given method on the host.
118 * @param strMethod {String} The event to listen for, or method to inject logic before.
119 * @param fn {Function} The handler function. For events, the "on" moment listener. For methods, the function to execute before the given method is executed.
120 * @param context {Object} An optional context to call the handler with. The default context is the plugin instance.
121 * @return handle {EventHandle} The detach handle for the handler.
123 doBefore: function(strMethod, fn, context) {
124 var host = this.get("host"), handle;
126 if (strMethod in host) { // method
127 handle = this.beforeHostMethod(strMethod, fn, context);
128 } else if (host.on) { // event
129 handle = this.onHostEvent(strMethod, fn, context);
136 * Listens for the "after" moment of events fired by the host,
137 * or injects code "after" a given method on the host.
141 * @param strMethod {String} The event to listen for, or method to inject logic after.
142 * @param fn {Function} The handler function. For events, the "after" moment listener. For methods, the function to execute after the given method is executed.
143 * @param context {Object} An optional context to call the handler with. The default context is the plugin instance.
144 * @return handle {EventHandle} The detach handle for the listener.
146 doAfter: function(strMethod, fn, context) {
147 var host = this.get("host"), handle;
149 if (strMethod in host) { // method
150 handle = this.afterHostMethod(strMethod, fn, context);
151 } else if (host.after) { // event
152 handle = this.afterHostEvent(strMethod, fn, context);
159 * Listens for the "on" moment of events fired by the host object.
161 * Listeners attached through this method will be detached when the plugin is unplugged.
163 * @method onHostEvent
164 * @param {String | Object} type The event type.
165 * @param {Function} fn The listener.
166 * @param {Object} context The execution context. Defaults to the plugin instance.
167 * @return handle {EventHandle} The detach handle for the listener.
169 onHostEvent : function(type, fn, context) {
170 var handle = this.get("host").on(type, fn, context || this);
171 this._handles.push(handle);
176 * Listens for the "on" moment of events fired by the host object one time only.
177 * The listener is immediately detached when it is executed.
179 * Listeners attached through this method will be detached when the plugin is unplugged.
181 * @method onceHostEvent
182 * @param {String | Object} type The event type.
183 * @param {Function} fn The listener.
184 * @param {Object} context The execution context. Defaults to the plugin instance.
185 * @return handle {EventHandle} The detach handle for the listener.
187 onceHostEvent : function(type, fn, context) {
188 var handle = this.get("host").once(type, fn, context || this);
189 this._handles.push(handle);
194 * Listens for the "after" moment of events fired by the host object.
196 * Listeners attached through this method will be detached when the plugin is unplugged.
198 * @method afterHostEvent
199 * @param {String | Object} type The event type.
200 * @param {Function} fn The listener.
201 * @param {Object} context The execution context. Defaults to the plugin instance.
202 * @return handle {EventHandle} The detach handle for the listener.
204 afterHostEvent : function(type, fn, context) {
205 var handle = this.get("host").after(type, fn, context || this);
206 this._handles.push(handle);
211 * Listens for the "after" moment of events fired by the host object one time only.
212 * The listener is immediately detached when it is executed.
214 * Listeners attached through this method will be detached when the plugin is unplugged.
216 * @method onceAfterHostEvent
217 * @param {String | Object} type The event type.
218 * @param {Function} fn The listener.
219 * @param {Object} context The execution context. Defaults to the plugin instance.
220 * @return handle {EventHandle} The detach handle for the listener.
222 onceAfterHostEvent : function(type, fn, context) {
223 var handle = this.get("host").onceAfter(type, fn, context || this);
224 this._handles.push(handle);
229 * Injects a function to be executed before a given method on host object.
231 * The function will be detached when the plugin is unplugged.
233 * @method beforeHostMethod
234 * @param {String} method The name of the method to inject the function before.
235 * @param {Function} fn The function to inject.
236 * @param {Object} context The execution context. Defaults to the plugin instance.
237 * @return handle {EventHandle} The detach handle for the injected function.
239 beforeHostMethod : function(strMethod, fn, context) {
240 var handle = Y.Do.before(fn, this.get("host"), strMethod, context || this);
241 this._handles.push(handle);
246 * Injects a function to be executed after a given method on host object.
248 * The function will be detached when the plugin is unplugged.
250 * @method afterHostMethod
251 * @param {String} method The name of the method to inject the function after.
252 * @param {Function} fn The function to inject.
253 * @param {Object} context The execution context. Defaults to the plugin instance.
254 * @return handle {EventHandle} The detach handle for the injected function.
256 afterHostMethod : function(strMethod, fn, context) {
257 var handle = Y.Do.after(fn, this.get("host"), strMethod, context || this);
258 this._handles.push(handle);
262 toString: function() {
263 return this.constructor.NAME + '[' + this.constructor.NS + ']';
267 Y.namespace("Plugin").Base = Plugin;
270 }, '3.13.0', {"requires": ["base-base"]});