2 changed files with 153 additions and 12 deletions
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/** |
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* @license In-Field Label jQuery Plugin |
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* http://fuelyourcoding.com/scripts/infield.html
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* |
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* Copyright (c) 2009-2010 Doug Neiner |
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* Dual licensed under the MIT and GPL licenses. |
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* Uses the same license as jQuery, see: |
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* http://docs.jquery.com/License
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* |
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* @version 0.1.2 |
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*/ |
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(function ($) { |
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$.InFieldLabels = function (label, field, options) { |
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// To avoid scope issues, use 'base' instead of 'this'
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// to reference this class from internal events and functions.
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var base = this; |
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// Access to jQuery and DOM versions of each element
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base.$label = $(label); |
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base.label = label; |
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base.$field = $(field); |
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base.field = field; |
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base.$label.data("InFieldLabels", base); |
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base.showing = true; |
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base.init = function () { |
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// Merge supplied options with default options
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base.options = $.extend({}, $.InFieldLabels.defaultOptions, options); |
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// Check if the field is already filled in
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if (base.$field.val() !== "") { |
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base.$label.hide(); |
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base.showing = false; |
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} |
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base.$field.focus(function () { |
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base.fadeOnFocus(); |
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}).blur(function () { |
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base.checkForEmpty(true); |
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}).bind('keydown.infieldlabel', function (e) { |
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// Use of a namespace (.infieldlabel) allows us to
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// unbind just this method later
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base.hideOnChange(e); |
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}).bind('paste', function (e) { |
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// Since you can not paste an empty string we can assume
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// that the fieldis not empty and the label can be cleared.
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base.setOpacity(0.0); |
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}).change(function (e) { |
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base.checkForEmpty(); |
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}).bind('onPropertyChange', function () { |
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base.checkForEmpty(); |
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}); |
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}; |
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// If the label is currently showing
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// then fade it down to the amount
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// specified in the settings
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base.fadeOnFocus = function () { |
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if (base.showing) { |
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base.setOpacity(base.options.fadeOpacity); |
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} |
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}; |
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base.setOpacity = function (opacity) { |
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base.$label.stop().animate({ opacity: opacity }, base.options.fadeDuration); |
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base.showing = (opacity > 0.0); |
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}; |
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// Checks for empty as a fail safe
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// set blur to true when passing from
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// the blur event
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base.checkForEmpty = function (blur) { |
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if (base.$field.val() === "") { |
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base.prepForShow(); |
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base.setOpacity(blur ? 1.0 : base.options.fadeOpacity); |
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} else { |
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base.setOpacity(0.0); |
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} |
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}; |
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base.prepForShow = function (e) { |
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if (!base.showing) { |
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// Prepare for a animate in...
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base.$label.css({opacity: 0.0}).show(); |
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// Reattach the keydown event
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base.$field.bind('keydown.infieldlabel', function (e) { |
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base.hideOnChange(e); |
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}); |
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} |
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}; |
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base.hideOnChange = function (e) { |
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if ( |
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(e.keyCode === 16) || // Skip Shift
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(e.keyCode === 9) // Skip Tab
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) { |
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return; |
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} |
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if (base.showing) { |
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base.$label.hide(); |
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base.showing = false; |
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} |
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// Remove keydown event to save on CPU processing
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base.$field.unbind('keydown.infieldlabel'); |
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}; |
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// Run the initialization method
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base.init(); |
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}; |
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$.InFieldLabels.defaultOptions = { |
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fadeOpacity: 0.5, // Once a field has focus, how transparent should the label be
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fadeDuration: 300 // How long should it take to animate from 1.0 opacity to the fadeOpacity
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}; |
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$.fn.inFieldLabels = function (options) { |
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return this.each(function () { |
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// Find input or textarea based on for= attribute
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// The for attribute on the label must contain the ID
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// of the input or textarea element
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var for_attr = $(this).attr('for'), $field; |
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if (!for_attr) { |
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return; // Nothing to attach, since the for field wasn't used
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} |
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// Find the referenced input or textarea element
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$field = $( |
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"input#" + for_attr + "[type='text']," + |
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"input#" + for_attr + "[type='search']," + |
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"input#" + for_attr + "[type='tel']," + |
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"input#" + for_attr + "[type='url']," + |
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"input#" + for_attr + "[type='email']," + |
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"input#" + for_attr + "[type='password']," + |
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"textarea#" + for_attr |
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); |
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if ($field.length === 0) { |
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return; // Again, nothing to attach
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} |
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// Only create object for input[text], input[password], or textarea
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(new $.InFieldLabels(this, $field[0], options)); |
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}); |
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}; |
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}(jQuery)); |
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@ -1,12 +0,0 @@ |
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/* |
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In-Field Label jQuery Plugin |
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http://fuelyourcoding.com/scripts/infield.html
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Copyright (c) 2009-2010 Doug Neiner |
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Dual licensed under the MIT and GPL licenses. |
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Uses the same license as jQuery, see: |
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http://docs.jquery.com/License
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@version 0.1.5 |
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*/ |
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(function($){$.InFieldLabels=function(label,field,options){var base=this;base.$label=$(label);base.label=label;base.$field=$(field);base.field=field;base.$label.data("InFieldLabels",base);base.showing=true;base.init=function(){base.options=$.extend({},$.InFieldLabels.defaultOptions,options);setTimeout(function(){if(base.$field.val()!==""){base.$label.hide();base.showing=false}},200);base.$field.focus(function(){base.fadeOnFocus()}).blur(function(){base.checkForEmpty(true)}).bind('keydown.infieldlabel',function(e){base.hideOnChange(e)}).bind('paste',function(e){base.setOpacity(0.0)}).change(function(e){base.checkForEmpty()}).bind('onPropertyChange',function(){base.checkForEmpty()}).bind('keyup.infieldlabel',function(){base.checkForEmpty()})};base.fadeOnFocus=function(){if(base.showing){base.setOpacity(base.options.fadeOpacity)}};base.setOpacity=function(opacity){base.$label.stop().animate({opacity:opacity},base.options.fadeDuration);base.showing=(opacity>0.0)};base.checkForEmpty=function(blur){if(base.$field.val()===""){base.prepForShow();base.setOpacity(blur?1.0:base.options.fadeOpacity)}else{base.setOpacity(0.0)}};base.prepForShow=function(e){if(!base.showing){base.$label.css({opacity:0.0}).show();base.$field.bind('keydown.infieldlabel',function(e){base.hideOnChange(e)})}};base.hideOnChange=function(e){if((e.keyCode===16)||(e.keyCode===9)){return}if(base.showing){base.$label.hide();base.showing=false}base.$field.unbind('keydown.infieldlabel')};base.init()};$.InFieldLabels.defaultOptions={fadeOpacity:0.5,fadeDuration:300};$.fn.inFieldLabels=function(options){return this.each(function(){var for_attr=$(this).attr('for'),$field;if(!for_attr){return}$field=$("input#"+for_attr+"[type='text'],"+"input#"+for_attr+"[type='search'],"+"input#"+for_attr+"[type='tel'],"+"input#"+for_attr+"[type='url'],"+"input#"+for_attr+"[type='email'],"+"input#"+for_attr+"[type='password'],"+"textarea#"+for_attr);if($field.length===0){return}(new $.InFieldLabels(this,$field[0],options))})}}(jQuery)); |
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