/*
 * 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);

			base.$label.css('position','absolute');
            var fieldPosition = base.$field.position();
			if (!base.options.fixedPosition) {
				base.$label.css({
					'left' : fieldPosition.left + parseInt(base.$field.css('padding-left')) + parseInt(base.$field.css('margin-left')) + parseInt(base.$field.css('border-left-width')),
					'top' : fieldPosition.top + parseInt(base.$field.css('padding-top')) + parseInt(base.$field.css('margin-top')) + parseInt(base.$field.css('border-top-width'))
				});
			}
			base.$label.addClass(base.options.labelClass);
			base.originalColor = base.$label.css('color');

			// 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, instant, hide) {
			if (base.options.colorOnly) {
				var color = new RGBColor(base.originalColor);
				var newR = Math.floor(255 - (255 - color.r) * opacity);
				var newB = Math.floor(255 - (255 - color.b) * opacity);
				var newG = Math.floor(255 - (255 - color.g) * opacity);
				var newColor = new RGBColor('rgb(' + newR + ', ' + newB + ', ' + newG +')');
				base.$label.stop().animate(
					{ color: newColor.toHex() },
					{
						duration: instant ? 0 : base.options.fadeDuration,
						complete: (
							hide ?
								function() {
									base.$label.hide();
								}
								:
								null
						)
					});
			} else {
				base.$label.stop().animate(
					{ opacity: opacity },
					{
						duration: instant ? 0 : base.options.fadeDuration,
						complete: (
							hide ?
								function() {
									base.$label.hide();
								}
								:
								null
						)
					});
			}
			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 );
				base.setOpacity(1.0);
			} else {
				base.setOpacity(0.0, true, true);
			};
		};
		
		base.prepForShow = function(e){
			if(!base.showing) {
				// Prepare for a animate in...
				base.setOpacity(0.0, true);
				base.$label.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
		labelClass: 'infield', // Class to be applied to label when positioned over form field
		fixedPosition: false,
		colorOnly: false
    };
	

    $.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);


/**
 * A class to parse color values
 * @author Stoyan Stefanov <sstoo@gmail.com>
 * @link   http://www.phpied.com/rgb-color-parser-in-javascript/
 * @license Use it if you like it
 */
function RGBColor(color_string)
{
    this.ok = false;

    // strip any leading #
    if (color_string.charAt(0) == '#') { // remove # if any
        color_string = color_string.substr(1,6);
    }

    color_string = color_string.replace(/ /g,'');
    color_string = color_string.toLowerCase();

    // before getting into regexps, try simple matches
    // and overwrite the input
    var simple_colors = {
        aliceblue: 'f0f8ff',
        antiquewhite: 'faebd7',
        aqua: '00ffff',
        aquamarine: '7fffd4',
        azure: 'f0ffff',
        beige: 'f5f5dc',
        bisque: 'ffe4c4',
        black: '000000',
        blanchedalmond: 'ffebcd',
        blue: '0000ff',
        blueviolet: '8a2be2',
        brown: 'a52a2a',
        burlywood: 'deb887',
        cadetblue: '5f9ea0',
        chartreuse: '7fff00',
        chocolate: 'd2691e',
        coral: 'ff7f50',
        cornflowerblue: '6495ed',
        cornsilk: 'fff8dc',
        crimson: 'dc143c',
        cyan: '00ffff',
        darkblue: '00008b',
        darkcyan: '008b8b',
        darkgoldenrod: 'b8860b',
        darkgray: 'a9a9a9',
        darkgreen: '006400',
        darkkhaki: 'bdb76b',
        darkmagenta: '8b008b',
        darkolivegreen: '556b2f',
        darkorange: 'ff8c00',
        darkorchid: '9932cc',
        darkred: '8b0000',
        darksalmon: 'e9967a',
        darkseagreen: '8fbc8f',
        darkslateblue: '483d8b',
        darkslategray: '2f4f4f',
        darkturquoise: '00ced1',
        darkviolet: '9400d3',
        deeppink: 'ff1493',
        deepskyblue: '00bfff',
        dimgray: '696969',
        dodgerblue: '1e90ff',
        feldspar: 'd19275',
        firebrick: 'b22222',
        floralwhite: 'fffaf0',
        forestgreen: '228b22',
        fuchsia: 'ff00ff',
        gainsboro: 'dcdcdc',
        ghostwhite: 'f8f8ff',
        gold: 'ffd700',
        goldenrod: 'daa520',
        gray: '808080',
        green: '008000',
        greenyellow: 'adff2f',
        honeydew: 'f0fff0',
        hotpink: 'ff69b4',
        indianred : 'cd5c5c',
        indigo : '4b0082',
        ivory: 'fffff0',
        khaki: 'f0e68c',
        lavender: 'e6e6fa',
        lavenderblush: 'fff0f5',
        lawngreen: '7cfc00',
        lemonchiffon: 'fffacd',
        lightblue: 'add8e6',
        lightcoral: 'f08080',
        lightcyan: 'e0ffff',
        lightgoldenrodyellow: 'fafad2',
        lightgrey: 'd3d3d3',
        lightgreen: '90ee90',
        lightpink: 'ffb6c1',
        lightsalmon: 'ffa07a',
        lightseagreen: '20b2aa',
        lightskyblue: '87cefa',
        lightslateblue: '8470ff',
        lightslategray: '778899',
        lightsteelblue: 'b0c4de',
        lightyellow: 'ffffe0',
        lime: '00ff00',
        limegreen: '32cd32',
        linen: 'faf0e6',
        magenta: 'ff00ff',
        maroon: '800000',
        mediumaquamarine: '66cdaa',
        mediumblue: '0000cd',
        mediumorchid: 'ba55d3',
        mediumpurple: '9370d8',
        mediumseagreen: '3cb371',
        mediumslateblue: '7b68ee',
        mediumspringgreen: '00fa9a',
        mediumturquoise: '48d1cc',
        mediumvioletred: 'c71585',
        midnightblue: '191970',
        mintcream: 'f5fffa',
        mistyrose: 'ffe4e1',
        moccasin: 'ffe4b5',
        navajowhite: 'ffdead',
        navy: '000080',
        oldlace: 'fdf5e6',
        olive: '808000',
        olivedrab: '6b8e23',
        orange: 'ffa500',
        orangered: 'ff4500',
        orchid: 'da70d6',
        palegoldenrod: 'eee8aa',
        palegreen: '98fb98',
        paleturquoise: 'afeeee',
        palevioletred: 'd87093',
        papayawhip: 'ffefd5',
        peachpuff: 'ffdab9',
        peru: 'cd853f',
        pink: 'ffc0cb',
        plum: 'dda0dd',
        powderblue: 'b0e0e6',
        purple: '800080',
        red: 'ff0000',
        rosybrown: 'bc8f8f',
        royalblue: '4169e1',
        saddlebrown: '8b4513',
        salmon: 'fa8072',
        sandybrown: 'f4a460',
        seagreen: '2e8b57',
        seashell: 'fff5ee',
        sienna: 'a0522d',
        silver: 'c0c0c0',
        skyblue: '87ceeb',
        slateblue: '6a5acd',
        slategray: '708090',
        snow: 'fffafa',
        springgreen: '00ff7f',
        steelblue: '4682b4',
        tan: 'd2b48c',
        teal: '008080',
        thistle: 'd8bfd8',
        tomato: 'ff6347',
        turquoise: '40e0d0',
        violet: 'ee82ee',
        violetred: 'd02090',
        wheat: 'f5deb3',
        white: 'ffffff',
        whitesmoke: 'f5f5f5',
        yellow: 'ffff00',
        yellowgreen: '9acd32'
    };
    for (var key in simple_colors) {
        if (color_string == key) {
            color_string = simple_colors[key];
        }
    }
    // emd of simple type-in colors

    // array of color definition objects
    var color_defs = [
        {
            re: /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/,
            example: ['rgb(123, 234, 45)', 'rgb(255,234,245)'],
            process: function (bits){
                return [
                    parseInt(bits[1]),
                    parseInt(bits[2]),
                    parseInt(bits[3])
                ];
            }
        },
        {
            re: /^(\w{2})(\w{2})(\w{2})$/,
            example: ['#00ff00', '336699'],
            process: function (bits){
                return [
                    parseInt(bits[1], 16),
                    parseInt(bits[2], 16),
                    parseInt(bits[3], 16)
                ];
            }
        },
        {
            re: /^(\w{1})(\w{1})(\w{1})$/,
            example: ['#fb0', 'f0f'],
            process: function (bits){
                return [
                    parseInt(bits[1] + bits[1], 16),
                    parseInt(bits[2] + bits[2], 16),
                    parseInt(bits[3] + bits[3], 16)
                ];
            }
        }
    ];

    // search through the definitions to find a match
    for (var i = 0; i < color_defs.length; i++) {
        var re = color_defs[i].re;
        var processor = color_defs[i].process;
        var bits = re.exec(color_string);
        if (bits) {
            channels = processor(bits);
            this.r = channels[0];
            this.g = channels[1];
            this.b = channels[2];
            this.ok = true;
        }

    }

    // validate/cleanup values
    this.r = (this.r < 0 || isNaN(this.r)) ? 0 : ((this.r > 255) ? 255 : this.r);
    this.g = (this.g < 0 || isNaN(this.g)) ? 0 : ((this.g > 255) ? 255 : this.g);
    this.b = (this.b < 0 || isNaN(this.b)) ? 0 : ((this.b > 255) ? 255 : this.b);

    // some getters
    this.toRGB = function () {
        return 'rgb(' + this.r + ', ' + this.g + ', ' + this.b + ')';
    }
    this.toHex = function () {
        var r = this.r.toString(16);
        var g = this.g.toString(16);
        var b = this.b.toString(16);
        if (r.length == 1) r = '0' + r;
        if (g.length == 1) g = '0' + g;
        if (b.length == 1) b = '0' + b;
        return '#' + r + g + b;
    }

    // help
    this.getHelpXML = function () {

        var examples = new Array();
        // add regexps
        for (var i = 0; i < color_defs.length; i++) {
            var example = color_defs[i].example;
            for (var j = 0; j < example.length; j++) {
                examples[examples.length] = example[j];
            }
        }
        // add type-in colors
        for (var sc in simple_colors) {
            examples[examples.length] = sc;
        }

        var xml = document.createElement('ul');
        xml.setAttribute('id', 'rgbcolor-examples');
        for (var i = 0; i < examples.length; i++) {
            try {
                var list_item = document.createElement('li');
                var list_color = new RGBColor(examples[i]);
                var example_div = document.createElement('div');
                example_div.style.cssText =
                        'margin: 3px; '
                        + 'border: 1px solid black; '
                        + 'background:' + list_color.toHex() + '; '
                        + 'color:' + list_color.toHex()
                ;
                example_div.appendChild(document.createTextNode('test'));
                var list_item_value = document.createTextNode(
                    ' ' + examples[i] + ' -> ' + list_color.toRGB() + ' -> ' + list_color.toHex()
                );
                list_item.appendChild(example_div);
                list_item.appendChild(list_item_value);
                xml.appendChild(list_item);

            } catch(e){}
        }
        return xml;

    }

}