X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/f5240829880f87e0cf581c6a296e436fdef0ef80..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/src/util/Function.js diff --git a/src/util/Function.js b/src/util/Function.js deleted file mode 100644 index b5f3800f..00000000 --- a/src/util/Function.js +++ /dev/null @@ -1,240 +0,0 @@ -/*! - * Ext JS Library 3.3.0 - * Copyright(c) 2006-2010 Ext JS, Inc. - * licensing@extjs.com - * http://www.extjs.com/license - */ -/** - * @class Ext.util.Functions - * @singleton - */ -Ext.util.Functions = { - /** - * Creates an interceptor function. The passed function is called before the original one. If it returns false, - * the original one is not called. The resulting function returns the results of the original function. - * The passed function is called with the parameters of the original function. Example usage: - *

-var sayHi = function(name){
-    alert('Hi, ' + name);
-}
-
-sayHi('Fred'); // alerts "Hi, Fred"
-
-// create a new function that validates input without
-// directly modifying the original function:
-var sayHiToFriend = Ext.createInterceptor(sayHi, function(name){
-    return name == 'Brian';
-});
-
-sayHiToFriend('Fred');  // no alert
-sayHiToFriend('Brian'); // alerts "Hi, Brian"
-       
- * @param {Function} origFn The original function. - * @param {Function} newFn The function to call before the original - * @param {Object} scope (optional) The scope (this reference) in which the passed function is executed. - * If omitted, defaults to the scope in which the original function is called or the browser window. - * @return {Function} The new function - */ - createInterceptor: function(origFn, newFn, scope) { - var method = origFn; - if (!Ext.isFunction(newFn)) { - return origFn; - } - else { - return function() { - var me = this, - args = arguments; - newFn.target = me; - newFn.method = origFn; - return (newFn.apply(scope || me || window, args) !== false) ? - origFn.apply(me || window, args) : - null; - }; - } - }, - - /** - * Creates a delegate (callback) that sets the scope to obj. - * Call directly on any function. Example: Ext.createDelegate(this.myFunction, this, [arg1, arg2]) - * Will create a function that is automatically scoped to obj so that the this variable inside the - * callback points to obj. Example usage: - *

-var sayHi = function(name){
-    // Note this use of "this.text" here.  This function expects to
-    // execute within a scope that contains a text property.  In this
-    // example, the "this" variable is pointing to the btn object that
-    // was passed in createDelegate below.
-    alert('Hi, ' + name + '. You clicked the "' + this.text + '" button.');
-}
-
-var btn = new Ext.Button({
-    text: 'Say Hi',
-    renderTo: Ext.getBody()
-});
-
-// This callback will execute in the scope of the
-// button instance. Clicking the button alerts
-// "Hi, Fred. You clicked the "Say Hi" button."
-btn.on('click', Ext.createDelegate(sayHi, btn, ['Fred']));
-       
- * @param {Function} fn The function to delegate. - * @param {Object} scope (optional) The scope (this reference) in which the function is executed. - * If omitted, defaults to the browser window. - * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller) - * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding, - * if a number the args are inserted at the specified position - * @return {Function} The new function - */ - createDelegate: function(fn, obj, args, appendArgs) { - if (!Ext.isFunction(fn)) { - return fn; - } - return function() { - var callArgs = args || arguments; - if (appendArgs === true) { - callArgs = Array.prototype.slice.call(arguments, 0); - callArgs = callArgs.concat(args); - } - else if (Ext.isNumber(appendArgs)) { - callArgs = Array.prototype.slice.call(arguments, 0); - // copy arguments first - var applyArgs = [appendArgs, 0].concat(args); - // create method call params - Array.prototype.splice.apply(callArgs, applyArgs); - // splice them in - } - return fn.apply(obj || window, callArgs); - }; - }, - - /** - * Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage: - *

-var sayHi = function(name){
-    alert('Hi, ' + name);
-}
-
-// executes immediately:
-sayHi('Fred');
-
-// executes after 2 seconds:
-Ext.defer(sayHi, 2000, this, ['Fred']);
-
-// this syntax is sometimes useful for deferring
-// execution of an anonymous function:
-Ext.defer(function(){
-    alert('Anonymous');
-}, 100);
-       
- * @param {Function} fn The function to defer. - * @param {Number} millis The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately) - * @param {Object} scope (optional) The scope (this reference) in which the function is executed. - * If omitted, defaults to the browser window. - * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller) - * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding, - * if a number the args are inserted at the specified position - * @return {Number} The timeout id that can be used with clearTimeout - */ - defer: function(fn, millis, obj, args, appendArgs) { - fn = Ext.util.Functions.createDelegate(fn, obj, args, appendArgs); - if (millis > 0) { - return setTimeout(fn, millis); - } - fn(); - return 0; - }, - - - /** - * Create a combined function call sequence of the original function + the passed function. - * The resulting function returns the results of the original function. - * The passed fcn is called with the parameters of the original function. Example usage: - * - -var sayHi = function(name){ - alert('Hi, ' + name); -} - -sayHi('Fred'); // alerts "Hi, Fred" - -var sayGoodbye = Ext.createSequence(sayHi, function(name){ - alert('Bye, ' + name); -}); - -sayGoodbye('Fred'); // both alerts show - - * @param {Function} origFn The original function. - * @param {Function} newFn The function to sequence - * @param {Object} scope (optional) The scope (this reference) in which the passed function is executed. - * If omitted, defaults to the scope in which the original function is called or the browser window. - * @return {Function} The new function - */ - createSequence: function(origFn, newFn, scope) { - if (!Ext.isFunction(newFn)) { - return origFn; - } - else { - return function() { - var retval = origFn.apply(this || window, arguments); - newFn.apply(scope || this || window, arguments); - return retval; - }; - } - } -}; - -/** - * Shorthand for {@link Ext.util.Functions#defer} - * @param {Function} fn The function to defer. - * @param {Number} millis The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately) - * @param {Object} scope (optional) The scope (this reference) in which the function is executed. - * If omitted, defaults to the browser window. - * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller) - * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding, - * if a number the args are inserted at the specified position - * @return {Number} The timeout id that can be used with clearTimeout - * @member Ext - * @method defer - */ - -Ext.defer = Ext.util.Functions.defer; - -/** - * Shorthand for {@link Ext.util.Functions#createInterceptor} - * @param {Function} origFn The original function. - * @param {Function} newFn The function to call before the original - * @param {Object} scope (optional) The scope (this reference) in which the passed function is executed. - * If omitted, defaults to the scope in which the original function is called or the browser window. - * @return {Function} The new function - * @member Ext - * @method defer - */ - -Ext.createInterceptor = Ext.util.Functions.createInterceptor; - -/** - * Shorthand for {@link Ext.util.Functions#createSequence} - * @param {Function} origFn The original function. - * @param {Function} newFn The function to sequence - * @param {Object} scope (optional) The scope (this reference) in which the passed function is executed. - * If omitted, defaults to the scope in which the original function is called or the browser window. - * @return {Function} The new function - * @member Ext - * @method defer - */ - -Ext.createSequence = Ext.util.Functions.createSequence; - -/** - * Shorthand for {@link Ext.util.Functions#createDelegate} - * @param {Function} fn The function to delegate. - * @param {Object} scope (optional) The scope (this reference) in which the function is executed. - * If omitted, defaults to the browser window. - * @param {Array} args (optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller) - * @param {Boolean/Number} appendArgs (optional) if True args are appended to call args instead of overriding, - * if a number the args are inserted at the specified position - * @return {Function} The new function - * @member Ext - * @method defer - */ -Ext.createDelegate = Ext.util.Functions.createDelegate;