Utility method for returning a default value if the passed value is empty.
- *The value is deemed to be empty if it is
-Ext.addBehaviors({
- // add a listener for click on all anchors in element with id foo
- '#foo a@click' : function(e, t){
- // do something
- },
-
- // add the same listener to multiple selectors (separated by comma BEFORE the @)
- '#foo a, #bar span.some-class@mouseover' : function(){
- // do something
- }
-});
- * example:
-ImageComponent = Ext.extend(Ext.BoxComponent, {
- initComponent: function() {
- this.autoEl = { tag: 'img' };
- MyComponent.superclass.initComponent.apply(this, arguments);
- this.initialBox = Ext.copyTo({}, this.initialConfig, 'x,y,width,height');
- }
-});
- *
-// Example 1:
-Ext.partition([true, false, true, true, false]); // [[true, true, true], [false, false]]
-
-// Example 2:
-Ext.partition(
- Ext.query("p"),
- function(val){
- return val.className == "class1"
- }
-);
-// true are those paragraph elements with a className of "class1",
-// false set are those that do not have that className.
- *
-// Example:
-Ext.invoke(Ext.query("p"), "getAttribute", "id");
-// [el1.getAttribute("id"), el2.getAttribute("id"), ..., elN.getAttribute("id")]
- *
-// Example:
-Ext.pluck(Ext.query("p"), "className"); // [el1.className, el2.className, ..., elN.className]
- * Zips N sets together.
- *
-// Example 1:
-Ext.zip([1,2,3],[4,5,6]); // [[1,4],[2,5],[3,6]]
-// Example 2:
-Ext.zip(
- [ "+", "-", "+"],
- [ 12, 10, 22],
- [ 43, 15, 96],
- function(a, b, c){
- return "$" + a + "" + b + "." + c
- }
-); // ["$+12.43", "$-10.15", "$+22.96"]
- *
-var sayHi = function(name){
- alert('Hi, ' + name);
-}
-
-sayHi('Fred'); // alerts "Hi, Fred"
-
-var sayGoodbye = sayHi.createSequence(function(name){
- alert('Bye, ' + name);
-});
-
-sayGoodbye('Fred'); // both alerts show
-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(fcn, scope){
- var method = this;
- return (typeof fcn != 'function') ?
- this :
- function(){
- var retval = method.apply(this || window, arguments);
- fcn.apply(scope || this || window, arguments);
- return retval;
- };
- }
-});
-
-
-/**
- * @class String
- * These functions are available as static methods on the JavaScript String object.
- */
-Ext.applyIf(String, {
-
- /**
- * Escapes the passed string for ' and \
- * @param {String} string The string to escape
- * @return {String} The escaped string
- * @static
- */
- escape : function(string) {
- return string.replace(/('|\\)/g, "\\$1");
- },
-
- /**
- * Pads the left side of a string with a specified character. This is especially useful
- * for normalizing number and date strings. Example usage:
- *
-var s = String.leftPad('123', 5, '0');
-// s now contains the string: '00123'
- *
-// alternate sort directions
-sort = sort.toggle('ASC', 'DESC');
-
-// instead of conditional logic:
-sort = (sort == 'ASC' ? 'DESC' : 'ASC');
-
-var s = ' foo bar ';
-alert('-' + s + '-'); //alerts "- foo bar -"
-alert('-' + s.trim() + '-'); //alerts "-foo bar-"
-