Jan-Christoph Borchardt
11 years ago
committed by
Morris Jobke
parent
04aa085292
commit
4ca665ac10
@ -1,177 +0,0 @@ |
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/* |
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* jquery.infieldlabel |
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* A simple jQuery plugin for adding labels that sit over a form field and fade away when the fields are populated. |
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*
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* Copyright (c) 2009 - 2013 Doug Neiner <doug@dougneiner.com> (http://code.dougneiner.com)
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* Source: https://github.com/dcneiner/In-Field-Labels-jQuery-Plugin
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* Dual licensed MIT or GPL |
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* MIT (http://www.opensource.org/licenses/mit-license)
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* GPL (http://www.opensource.org/licenses/gpl-license)
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* |
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* @version 0.1.3 |
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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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var initialSet; |
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// Merge supplied options with default options
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base.options = $.extend({}, $.InFieldLabels.defaultOptions, options); |
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// Check if the field is already filled in
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// add a short delay to handle autocomplete
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setTimeout(function() { |
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if (base.$field.val() !== "") { |
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base.$label.hide(); |
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base.showing = false; |
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} else { |
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base.$label.show(); |
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base.showing = true; |
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} |
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}, 200); |
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base.$field.focus(function () { |
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base.fadeOnFocus(); |
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}).blur(function () { |
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base.checkForEmpty(true); |
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}).bind('keydown.infieldlabel', function (e) { |
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// Use of a namespace (.infieldlabel) allows us to
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// unbind just this method later
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base.hideOnChange(e); |
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}).bind('paste', function () { |
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// Since you can not paste an empty string we can assume
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// that the fieldis not empty and the label can be cleared.
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base.setOpacity(0.0); |
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}).change(function () { |
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base.checkForEmpty(); |
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}).bind('onPropertyChange', function () { |
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base.checkForEmpty(); |
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}).bind('keyup.infieldlabel', function () { |
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base.checkForEmpty(); |
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}); |
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if ( base.options.pollDuration > 0 ) { |
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initialSet = setInterval( function () { |
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if (base.$field.val() !== "") { |
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base.$label.hide(); |
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base.showing = false; |
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clearInterval( initialSet ); |
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} |
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}, base.options.pollDuration ); |
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} |
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}; |
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// If the label is currently showing
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// then fade it down to the amount
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// specified in the settings
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base.fadeOnFocus = function () { |
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if (base.showing) { |
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base.setOpacity(base.options.fadeOpacity); |
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} |
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}; |
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base.setOpacity = function (opacity) { |
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base.$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.$field.val() === "") { |
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base.prepForShow(); |
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base.setOpacity(blur ? 1.0 : base.options.fadeOpacity); |
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} else { |
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base.setOpacity(0.0); |
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} |
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}; |
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base.prepForShow = function () { |
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if (!base.showing) { |
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// Prepare for a animate in...
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base.$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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pollDuration: 0, // If set to a number greater than zero, this will poll until content is detected in a field
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enabledInputTypes: [ "text", "search", "tel", "url", "email", "password", "number", "textarea" ] |
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}; |
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$.fn.inFieldLabels = function (options) { |
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var allowed_types = options && options.enabledInputTypes || $.InFieldLabels.defaultOptions.enabledInputTypes; |
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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, restrict_type; |
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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 = document.getElementById( for_attr ); |
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if ( !field ) { |
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return; // No element found
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} |
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// Restrict input type
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restrict_type = $.inArray( field.type, allowed_types ); |
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if ( restrict_type === -1 && field.nodeName !== "TEXTAREA" ) { |
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return; // Again, nothing to attach
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}
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// Only create object for matched input types and textarea
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(new $.InFieldLabels(this, field, options)); |
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}); |
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}; |
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}(jQuery)); |
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