diff --git a/js/jquery.infieldlabel.js b/js/jquery.infieldlabel.js new file mode 100755 index 0000000000..67608493f8 --- /dev/null +++ b/js/jquery.infieldlabel.js @@ -0,0 +1,153 @@ +/** + * @license In-Field Label jQuery Plugin + * http://fuelyourcoding.com/scripts/infield.html + * + * Copyright (c) 2009-2010 Doug Neiner + * Dual licensed under the MIT and GPL licenses. + * Uses the same license as jQuery, see: + * http://docs.jquery.com/License + * + * @version 0.1.2 + */ +(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); + }).bind('paste', function (e) { + // Since you can not paste an empty string we can assume + // that the fieldis not empty and the label can be cleared. + base.setOpacity(0.0); + }).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'), $field; + if (!for_attr) { + return; // Nothing to attach, since the for field wasn't used + } + + // Find the referenced input or textarea element + $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; // Again, nothing to attach + } + + // Only create object for input[text], input[password], or textarea + (new $.InFieldLabels(this, $field[0], options)); + }); + }; + +}(jQuery)); \ No newline at end of file diff --git a/js/jquery.infieldlabel.min.js b/js/jquery.infieldlabel.min.js new file mode 100755 index 0000000000..179306c902 --- /dev/null +++ b/js/jquery.infieldlabel.min.js @@ -0,0 +1,13 @@ +/* + In-Field Label jQuery Plugin + http://fuelyourcoding.com/scripts/infield.html + + Copyright (c) 2009 Doug Neiner + Dual licensed under the MIT and GPL licenses. + Uses the same license as jQuery, see: + http://docs.jquery.com/License + +*/ +(function(d){d.InFieldLabels=function(e,b,f){var a=this;a.$label=d(e);a.label=e;a.$field=d(b);a.field=b;a.$label.data("InFieldLabels",a);a.showing=true;a.init=function(){a.options=d.extend({},d.InFieldLabels.defaultOptions,f);if(a.$field.val()!==""){a.$label.hide();a.showing=false}a.$field.focus(function(){a.fadeOnFocus()}).blur(function(){a.checkForEmpty(true)}).bind("keydown.infieldlabel",function(c){a.hideOnChange(c)}).bind("paste",function(){a.setOpacity(0)}).change(function(){a.checkForEmpty()}).bind("onPropertyChange", +function(){a.checkForEmpty()})};a.fadeOnFocus=function(){a.showing&&a.setOpacity(a.options.fadeOpacity)};a.setOpacity=function(c){a.$label.stop().animate({opacity:c},a.options.fadeDuration);a.showing=c>0};a.checkForEmpty=function(c){if(a.$field.val()===""){a.prepForShow();a.setOpacity(c?1:a.options.fadeOpacity)}else a.setOpacity(0)};a.prepForShow=function(){if(!a.showing){a.$label.css({opacity:0}).show();a.$field.bind("keydown.infieldlabel",function(c){a.hideOnChange(c)})}};a.hideOnChange=function(c){if(!(c.keyCode=== +16||c.keyCode===9)){if(a.showing){a.$label.hide();a.showing=false}a.$field.unbind("keydown.infieldlabel")}};a.init()};d.InFieldLabels.defaultOptions={fadeOpacity:0.5,fadeDuration:300};d.fn.inFieldLabels=function(e){return this.each(function(){var b=d(this).attr("for");if(b){b=d("input#"+b+"[type='text'],input#"+b+"[type='search'],input#"+b+"[type='tel'],input#"+b+"[type='url'],input#"+b+"[type='email'],input#"+b+"[type='password'],textarea#"+b);b.length!==0&&new d.InFieldLabels(this,b[0],e)}})}})(jQuery);