X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/0494b8d9b9bb03ab6c22b34dae81261e3cd7e3e6..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/src/ext-core/src/util/DelayedTask.js diff --git a/src/ext-core/src/util/DelayedTask.js b/src/ext-core/src/util/DelayedTask.js deleted file mode 100644 index 898c7ced..00000000 --- a/src/ext-core/src/util/DelayedTask.js +++ /dev/null @@ -1,70 +0,0 @@ -/*! - * Ext JS Library 3.3.1 - * Copyright(c) 2006-2010 Sencha Inc. - * licensing@sencha.com - * http://www.sencha.com/license - */ -/** - * @class Ext.util.DelayedTask - *
The DelayedTask class provides a convenient way to "buffer" the execution of a method, - * performing setTimeout where a new timeout cancels the old timeout. When called, the - * task will wait the specified time period before executing. If durng that time period, - * the task is called again, the original call will be cancelled. This continues so that - * the function is only called a single time for each iteration.
- *This method is especially useful for things like detecting whether a user has finished - * typing in a text field. An example would be performing validation on a keypress. You can - * use this class to buffer the keypress events for a certain number of milliseconds, and - * perform only if they stop for that amount of time. Usage:
-var task = new Ext.util.DelayedTask(function(){
- alert(Ext.getDom('myInputField').value.length);
-});
-// Wait 500ms before calling our function. If the user presses another key
-// during that 500ms, it will be cancelled and we'll wait another 500ms.
-Ext.get('myInputField').on('keypress', function(){
- task.{@link #delay}(500);
-});
- *
- * Note that we are using a DelayedTask here to illustrate a point. The configuration - * option buffer for {@link Ext.util.Observable#addListener addListener/on} will - * also setup a delayed task for you to buffer events.
- * @constructor The parameters to this constructor serve as defaults and are not required. - * @param {Function} fn (optional) The default function to call. - * @param {Object} scope The default scope (Thethis
reference) in which the
- * function is called. If not specified, this
will refer to the browser window.
- * @param {Array} args (optional) The default Array of arguments.
- */
-Ext.util.DelayedTask = function(fn, scope, args){
- var me = this,
- id,
- call = function(){
- clearInterval(id);
- id = null;
- fn.apply(scope, args || []);
- };
-
- /**
- * Cancels any pending timeout and queues a new one
- * @param {Number} delay The milliseconds to delay
- * @param {Function} newFn (optional) Overrides function passed to constructor
- * @param {Object} newScope (optional) Overrides scope passed to constructor. Remember that if no scope
- * is specified, this
will refer to the browser window.
- * @param {Array} newArgs (optional) Overrides args passed to constructor
- */
- me.delay = function(delay, newFn, newScope, newArgs){
- me.cancel();
- fn = newFn || fn;
- scope = newScope || scope;
- args = newArgs || args;
- id = setInterval(call, delay);
- };
-
- /**
- * Cancel the last queued timeout
- */
- me.cancel = function(){
- if(id){
- clearInterval(id);
- id = null;
- }
- };
-};
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