1 files changed, 54 insertions, 130 deletions
diff --git a/lib/scripts/helpers.js b/lib/scripts/helpers.js
index 129964d29..d6f36967d 100644
--- a/lib/scripts/helpers.js
+++ b/lib/scripts/helpers.js
@@ -1,134 +1,11 @@
 /**
- * Differrent helper functions
- *
- * @author Ilya Lebedev <ilya@lebedev.net>
- * @license LGPL
- */
-//-----------------------------------------------------------------------------
-//  Variable/property checks
-//-----------------------------------------------------------------------------
-/**
- *  Checks if property is undefined
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isUndefined (prop /* :Object */) /* :Boolean */ {
-  return (typeof prop == 'undefined');
-}
-/**
- *  Checks if property is function
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isFunction (prop /* :Object */) /* :Boolean */ {
-  return (typeof prop == 'function');
-}
-/**
- *  Checks if property is string
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isString (prop /* :Object */) /* :Boolean */ {
-  return (typeof prop == 'string');
-}
-/**
- *  Checks if property is number
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isNumber (prop /* :Object */) /* :Boolean */ {
-  return (typeof prop == 'number');
-}
-/**
- *  Checks if property is the calculable number
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
+ * Various helper functions
  */
-function isNumeric (prop /* :Object */) /* :Boolean */ {
-  return isNumber(prop)&&!isNaN(prop)&&isFinite(prop);
-}
-/**
- *  Checks if property is array
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isArray (prop /* :Object */) /* :Boolean */ {
-  return (prop instanceof Array);
-}
-/**
- *  Checks if property is regexp
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isRegExp (prop /* :Object */) /* :Boolean */ {
-  return (prop instanceof RegExp);
-}
-/**
- *  Checks if property is a boolean value
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isBoolean (prop /* :Object */) /* :Boolean */ {
-  return ('boolean' == typeof prop);
-}
-/**
- *  Checks if property is a scalar value (value that could be used as the hash key)
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isScalar (prop /* :Object */) /* :Boolean */ {
-  return isNumeric(prop)||isString(prop);
-}
-/**
- *  Checks if property is empty
- *
- *  @param {Object} prop value to check
- *  @return {Boolean} true if matched
- *  @scope public
- */
-function isEmpty (prop /* :Object */) /* :Boolean */ {
-  if (isBoolean(prop)) return false;
-  if (isRegExp(prop) && new RegExp("").toString() == prop.toString()) return true;
-  if (isString(prop) || isNumber(prop)) return !prop;
-  if (Boolean(prop)&&false != prop) {
-    for (var i in prop) if(prop.hasOwnProperty(i)) return false;
-  }
-  return true;
-}
-
-/**
- *  Checks if property is derived from prototype, applies method if it is not exists
- *
- *  @param string property name
- *  @return bool true if prototyped
- *  @access public
- */
-if ('undefined' == typeof Object.hasOwnProperty) {
-  Object.prototype.hasOwnProperty = function (prop) {
-    return !('undefined' == typeof this[prop] || this.constructor && this.constructor.prototype[prop] && this[prop] === this.constructor.prototype[prop]);
-  };
-}
 
 /**
  * Very simplistic Flash plugin check, probably works for Flash 8 and higher only
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
  */
 function hasFlash(version){
     var ver = 0;
@@ -136,11 +13,58 @@ function hasFlash(version){
         if(navigator.plugins != null && navigator.plugins.length > 0){
            ver = navigator.plugins["Shockwave Flash"].description.split(' ')[2].split('.')[0];
         }else{
-           var axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
-           ver = axo.GetVariable("$version").split(' ')[1].split(',')[0];
+           ver = (new ActiveXObject("ShockwaveFlash.ShockwaveFlash"))
+                 .GetVariable("$version").split(' ')[1].split(',')[0];
         }
     }catch(e){ }
 
-    if(ver >= version) return true;
-    return false;
+    return ver >= version;
+}
+
+/**
+ * A PHP-style substr_replace
+ *
+ * Supports negative start and length and omitting length, but not
+ * str and replace arrays.
+ * See http://php.net/substr-replace for further documentation.
+ */
+function substr_replace(str, replace, start, length) {
+    var a2, b1;
+    a2 = (start < 0 ? str.length : 0) + start;
+    if (typeof length === 'undefined') {
+        length = str.length - a2;
+    } else if (length < 0 && start < 0 && length <= start) {
+        length = 0;
+    }
+    b1 = (length < 0 ? str.length : a2) + length;
+    return str.substring(0, a2) + replace + str.substring(b1);
+}
+
+/**
+ * Bind variables to a function call creating a closure
+ *
+ * Use this to circumvent variable scope problems when creating closures
+ * inside a loop
+ *
+ * @author  Adrian Lang <lang@cosmocode.de>
+ * @link    http://www.cosmocode.de/en/blog/gohr/2009-10/15-javascript-fixing-the-closure-scope-in-loops
+ * @param   functionref fnc - the function to be called
+ * @param   mixed - any arguments to be passed to the function
+ * @returns functionref
+ */
+function bind(fnc/*, ... */) {
+    var Aps = Array.prototype.slice,
+    // Store passed arguments in this scope.
+    // Since arguments is no Array nor has an own slice method,
+    // we have to apply the slice method from the Array.prototype
+        static_args = Aps.call(arguments, 1);
+
+    // Return a function evaluating the passed function with the
+    // given args and optional arguments passed on invocation.
+    return function (/* ... */) {
+        // Same here, but we use Array.prototype.slice solely for
+        // converting arguments to an Array.
+        return fnc.apply(this,
+                         static_args.concat(Aps.call(arguments, 0)));
+    };
 }