add infieldlabel source

diff --git a/core/js/jquery.infieldlabel.js b/core/js/jquery.infieldlabel.js
new file mode 100755 (executable)
index 0000000..f6a67b6
--- /dev/null
+++ b/core/js/jquery.infieldlabel.js
@@ -0,0 +1,140 @@
+/*
+ * In-Field Label jQuery Plugin
+ * http://fuelyourcoding.com/scripts/infield.html
+ *
+ * Copyright (c) 2009 Doug Neiner
+ * Dual licensed under the MIT and GPL licenses.
+ * Uses the same license as jQuery, see:
+ * http://docs.jquery.com/License
+ *
+ * @version 0.1
+ */
+(function($){
+       
+    $.InFieldLabels = function(label,field, options){
+        // To avoid scope issues, use 'base' instead of 'this'
+        // to reference this class from internal events and functions.
+        var base = this;
+        
+        // Access to jQuery and DOM versions of each element
+        base.$label = $(label);
+        base.label = label;
+
+               base.$field = $(field);
+               base.field = field;
+        
+               base.$label.data("InFieldLabels", base);
+               base.showing = true;
+        
+        base.init = function(){
+                       // Merge supplied options with default options
+            base.options = $.extend({},$.InFieldLabels.defaultOptions, options);
+
+                       // Check if the field is already filled in
+                       if(base.$field.val() != ""){
+                               base.$label.hide();
+                               base.showing = false;
+                       };
+                       
+                       base.$field.focus(function(){
+                               base.fadeOnFocus();
+                       }).blur(function(){
+                               base.checkForEmpty(true);
+                       }).bind('keydown.infieldlabel',function(e){
+                               // Use of a namespace (.infieldlabel) allows us to
+                               // unbind just this method later
+                               base.hideOnChange(e);
+                       }).change(function(e){
+                               base.checkForEmpty();
+                       }).bind('onPropertyChange', function(){
+                               base.checkForEmpty();
+                       });
+        };
+
+               // If the label is currently showing
+               // then fade it down to the amount
+               // specified in the settings
+               base.fadeOnFocus = function(){
+                       if(base.showing){
+                               base.setOpacity(base.options.fadeOpacity);
+                       };
+               };
+               
+               base.setOpacity = function(opacity){
+                       base.$label.stop().animate({ opacity: opacity }, base.options.fadeDuration);
+                       base.showing = (opacity > 0.0);
+               };
+               
+               // Checks for empty as a fail safe
+               // set blur to true when passing from
+               // the blur event
+               base.checkForEmpty = function(blur){
+                       if(base.$field.val() == ""){
+                               base.prepForShow();
+                               base.setOpacity( blur ? 1.0 : base.options.fadeOpacity );
+                       } else {
+                               base.setOpacity(0.0);
+                       };
+               };
+               
+               base.prepForShow = function(e){
+                       if(!base.showing) {
+                               // Prepare for a animate in...
+                               base.$label.css({opacity: 0.0}).show();
+                               
+                               // Reattach the keydown event
+                               base.$field.bind('keydown.infieldlabel',function(e){
+                                       base.hideOnChange(e);
+                               });
+                       };
+               };
+
+               base.hideOnChange = function(e){
+                       if(
+                               (e.keyCode == 16) || // Skip Shift
+                               (e.keyCode == 9) // Skip Tab
+                         ) return; 
+                       
+                       if(base.showing){
+                               base.$label.hide();
+                               base.showing = false;
+                       };
+                       
+                       // Remove keydown event to save on CPU processing
+                       base.$field.unbind('keydown.infieldlabel');
+               };
+      
+               // Run the initialization method
+        base.init();
+    };
+       
+    $.InFieldLabels.defaultOptions = {
+        fadeOpacity: 0.5, // Once a field has focus, how transparent should the label be
+               fadeDuration: 300 // How long should it take to animate from 1.0 opacity to the fadeOpacity
+    };
+       
+
+    $.fn.inFieldLabels = function(options){
+        return this.each(function(){
+                       // Find input or textarea based on for= attribute
+                       // The for attribute on the label must contain the ID
+                       // of the input or textarea element
+                       var for_attr = $(this).attr('for');
+                       if( !for_attr ) return; // Nothing to attach, since the for field wasn't used
+                       
+                       
+                       // Find the referenced input or textarea element
+                       var $field = $(
+                               "input#" + for_attr + "[type='text']," + 
+                               "input#" + for_attr + "[type='password']," + 
+                               "textarea#" + for_attr
+                               );
+                               
+                       if( $field.length == 0) return; // Again, nothing to attach
+                       
+                       // Only create object for input[text], input[password], or textarea
+            (new $.InFieldLabels(this, $field[0], options));
+        });
+    };
+       
+})(jQuery);
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