/*
* jQuery miniColors: A small color selector
*
* Copyright 2011 Cory LaViska for A Beautiful Site, LLC. (http://abeautifulsite.net/)
*
* Dual licensed under the MIT or GPL Version 2 licenses
*
*/
if(jQuery) (function($) {

$.extend($.fn, {

miniColors: function(o, data) {


var create = function(input, o, data) {

//
// Creates a new instance of the miniColors selector
//

// Determine initial color (defaults to white)
var color = cleanHex(input.val());
if( !color ) color = '';
var hsb = hex2hsb(color);

// Create trigger
var trigger = $('<a class="miniColors-trigger" style="background-color: #' + color + '" href="#"></a>');
trigger.insertAfter(input);

// Add necessary attributes
input.addClass('miniColors').attr('maxlength', 7).attr('autocomplete', 'off');

// Set input data
input.data('trigger', trigger);
input.data('hsb', hsb);
if( o.change ) input.data('change', o.change);

// Handle options
if( o.readonly ) input.attr('readonly', true);
if( o.disabled ) disable(input);

// Show selector when trigger is clicked
trigger.bind('click.miniColors', function(event) {
event.preventDefault();
input.trigger('focus');
});

// Show selector when input receives focus
input.bind('focus.miniColors', function(event) {
show(input);
});

// Hide on blur
input.bind('blur.miniColors', function(event) {
var hex = cleanHex(input.val());
input.val( hex ? '#' + hex : '' );
});

// Hide when tabbing out of the input
input.bind('keydown.miniColors', function(event) {
if( event.keyCode === 9 ) hide(input);
});

// Update when color is typed in
input.bind('keyup.miniColors', function(event) {
// Remove non-hex characters
var filteredHex = input.val().replace(/[^A-F0-9#]/ig, '');
input.val(filteredHex);
if( !setColorFromInput(input) ) {
// Reset trigger color when color is invalid
input.data('trigger').css('backgroundColor', '#FFF');
}
});

// Handle pasting
input.bind('paste.miniColors', function(event) {
// Short pause to wait for paste to complete
setTimeout( function() {
input.trigger('keyup');
}, 5);
});

};


var destroy = function(input) {

//
// Destroys an active instance of the miniColors selector
//

hide();

input = $(input);
input.data('trigger').remove();
input.removeAttr('autocomplete');
input.removeData('trigger');
input.removeData('selector');
input.removeData('hsb');
input.removeData('huePicker');
input.removeData('colorPicker');
input.removeData('mousebutton');
input.removeData('moving');
input.unbind('click.miniColors');
input.unbind('focus.miniColors');
input.unbind('blur.miniColors');
input.unbind('keyup.miniColors');
input.unbind('keydown.miniColors');
input.unbind('paste.miniColors');
$(document).unbind('mousedown.miniColors');
$(document).unbind('mousemove.miniColors');

};


var enable = function(input) {

//
// Disables the input control and the selector
//

input.attr('disabled', false);
input.data('trigger').css('opacity', 1);

};


var disable = function(input) {

//
// Disables the input control and the selector
//

hide(input);
input.attr('disabled', true);
input.data('trigger').css('opacity', .5);

};


var show = function(input) {

//
// Shows the miniColors selector
//

if( input.attr('disabled') ) return false;

// Hide all other instances
hide();

// Generate the selector
var selector = $('<div class="miniColors-selector"></div>');
selector.append('<div class="miniColors-colors" style="background-color: #FFF;"><div class="miniColors-colorPicker"></div></div>');
selector.append('<div class="miniColors-hues"><div class="miniColors-huePicker"></div></div>');
selector.css({
top: input.is(':visible') ? input.offset().top + input.outerHeight() : input.data('trigger').offset().top + input.data('trigger').outerHeight(),
left: input.is(':visible') ? input.offset().left : input.data('trigger').offset().left,
display: 'none'
}).addClass( input.attr('class') );

// Set background for colors
var hsb = input.data('hsb');
selector.find('.miniColors-colors').css('backgroundColor', '#' + hsb2hex({ h: hsb.h, s: 100, b: 100 }));

// Set colorPicker position
var colorPosition = input.data('colorPosition');
if( !colorPosition ) colorPosition = getColorPositionFromHSB(hsb);
selector.find('.miniColors-colorPicker').css('top', colorPosition.y + 'px').css('left', colorPosition.x + 'px');

// Set huePicker position
var huePosition = input.data('huePosition');
if( !huePosition ) huePosition = getHuePositionFromHSB(hsb);
selector.find('.miniColors-huePicker').css('top', huePosition.y + 'px');


// Set input data
input.data('selector', selector);
input.data('huePicker', selector.find('.miniColors-huePicker'));
input.data('colorPicker', selector.find('.miniColors-colorPicker'));
input.data('mousebutton', 0);

$('BODY').append(selector);
selector.fadeIn(100);

// Prevent text selection in IE
selector.bind('selectstart', function() { return false; });

$(document).bind('mousedown.miniColors', function(event) {
input.data('mousebutton', 1);

if( $(event.target).parents().andSelf().hasClass('miniColors-colors') ) {
event.preventDefault();
input.data('moving', 'colors');
moveColor(input, event);
}

if( $(event.target).parents().andSelf().hasClass('miniColors-hues') ) {
event.preventDefault();
input.data('moving', 'hues');
moveHue(input, event);
}

if( $(event.target).parents().andSelf().hasClass('miniColors-selector') ) {
event.preventDefault();
return;
}

if( $(event.target).parents().andSelf().hasClass('miniColors') ) return;

hide(input);
});

$(document).bind('mouseup.miniColors', function(event) {
input.data('mousebutton', 0);
input.removeData('moving');
});

$(document).bind('mousemove.miniColors', function(event) {
if( input.data('mousebutton') === 1 ) {
if( input.data('moving') === 'colors' ) moveColor(input, event);
if( input.data('moving') === 'hues' ) moveHue(input, event);
}
});

};


var hide = function(input) {

//
// Hides one or more miniColors selectors
//

// Hide all other instances if input isn't specified
if( !input ) input = '.miniColors';

$(input).each( function() {
var selector = $(this).data('selector');
$(this).removeData('selector');
$(selector).fadeOut(100, function() {
$(this).remove();
});
});

$(document).unbind('mousedown.miniColors');
$(document).unbind('mousemove.miniColors');

};


var moveColor = function(input, event) {

var colorPicker = input.data('colorPicker');

colorPicker.hide();

var position = {
x: event.clientX - input.data('selector').find('.miniColors-colors').offset().left + $(document).scrollLeft() - 5,
y: event.clientY - input.data('selector').find('.miniColors-colors').offset().top + $(document).scrollTop() - 5
};

if( position.x <= -5 ) position.x = -5;
if( position.x >= 144 ) position.x = 144;
if( position.y <= -5 ) position.y = -5;
if( position.y >= 144 ) position.y = 144;
input.data('colorPosition', position);
colorPicker.css('left', position.x).css('top', position.y).show();

// Calculate saturation
var s = Math.round((position.x + 5) * .67);
if( s < 0 ) s = 0;
if( s > 100 ) s = 100;

// Calculate brightness
var b = 100 - Math.round((position.y + 5) * .67);
if( b < 0 ) b = 0;
if( b > 100 ) b = 100;

// Update HSB values
var hsb = input.data('hsb');
hsb.s = s;
hsb.b = b;

// Set color
setColor(input, hsb, true);

};


var moveHue = function(input, event) {

var huePicker = input.data('huePicker');

huePicker.hide();

var position = {
y: event.clientY - input.data('selector').find('.miniColors-colors').offset().top + $(document).scrollTop() - 1
};

if( position.y <= -1 ) position.y = -1;
if( position.y >= 149 ) position.y = 149;
input.data('huePosition', position);
huePicker.css('top', position.y).show();

// Calculate hue
var h = Math.round((150 - position.y - 1) * 2.4);
if( h < 0 ) h = 0;
if( h > 360 ) h = 360;

// Update HSB values
var hsb = input.data('hsb');
hsb.h = h;

// Set color
setColor(input, hsb, true);

};


var setColor = function(input, hsb, updateInputValue) {

input.data('hsb', hsb);
var hex = hsb2hex(hsb);
if( updateInputValue ) input.val('#' + hex);
input.data('trigger').css('backgroundColor', '#' + hex);
if( input.data('selector') ) input.data('selector').find('.miniColors-colors').css('backgroundColor', '#' + hsb2hex({ h: hsb.h, s: 100, b: 100 }));

if( input.data('change') ) {
input.data('change').call(input, '#' + hex, hsb2rgb(hsb));
}

};


var setColorFromInput = function(input) {

// Don't update if the hex color is invalid
var hex = cleanHex(input.val());
if( !hex ) return false;

// Get HSB equivalent
var hsb = hex2hsb(hex);

// If color is the same, no change required
var currentHSB = input.data('hsb');
if( hsb.h === currentHSB.h && hsb.s === currentHSB.s && hsb.b === currentHSB.b ) return true;

// Set colorPicker position
var colorPosition = getColorPositionFromHSB(hsb);
var colorPicker = $(input.data('colorPicker'));
colorPicker.css('top', colorPosition.y + 'px').css('left', colorPosition.x + 'px');

// Set huePosition position
var huePosition = getHuePositionFromHSB(hsb);
var huePicker = $(input.data('huePicker'));
huePicker.css('top', huePosition.y + 'px');

setColor(input, hsb, false);

return true;

};


var getColorPositionFromHSB = function(hsb) {

var x = Math.ceil(hsb.s / .67);
if( x < 0 ) x = 0;
if( x > 150 ) x = 150;

var y = 150 - Math.ceil(hsb.b / .67);
if( y < 0 ) y = 0;
if( y > 150 ) y = 150;

return { x: x - 5, y: y - 5 };

}


var getHuePositionFromHSB = function(hsb) {

var y = 150 - (hsb.h / 2.4);
if( y < 0 ) h = 0;
if( y > 150 ) h = 150;

return { y: y - 1 };

}


var cleanHex = function(hex) {

//
// Turns a dirty hex string into clean, 6-character hex color
//

hex = hex.replace(/[^A-Fa-f0-9]/, '');

if( hex.length == 3 ) {
hex = hex[0] + hex[0] + hex[1] + hex[1] + hex[2] + hex[2];
}

return hex.length === 6 ? hex : null;

};


var hsb2rgb = function(hsb) {
var rgb = {};
var h = Math.round(hsb.h);
var s = Math.round(hsb.s*255/100);
var v = Math.round(hsb.b*255/100);
if(s == 0) {
rgb.r = rgb.g = rgb.b = v;
} else {
var t1 = v;
var t2 = (255 - s) * v / 255;
var t3 = (t1 - t2) * (h % 60) / 60;
if( h == 360 ) h = 0;
if( h < 60 ) { rgb.r = t1; rgb.b = t2; rgb.g = t2 + t3; }
else if( h<120 ) {rgb.g = t1; rgb.b = t2; rgb.r = t1 - t3; }
else if( h<180 ) {rgb.g = t1; rgb.r = t2; rgb.b = t2 + t3; }
else if( h<240 ) {rgb.b = t1; rgb.r = t2; rgb.g = t1 - t3; }
else if( h<300 ) {rgb.b = t1; rgb.g = t2; rgb.r = t2 + t3; }
else if( h<360 ) {rgb.r = t1; rgb.g = t2; rgb.b = t1 - t3; }
else { rgb.r = 0; rgb.g = 0; rgb.b = 0; }
}
return {
r: Math.round(rgb.r),
g: Math.round(rgb.g),
b: Math.round(rgb.b)
};
};


var rgb2hex = function(rgb) {

var hex = [
rgb.r.toString(16),
rgb.g.toString(16),
rgb.b.toString(16)
];
$.each(hex, function(nr, val) {
if (val.length == 1) hex[nr] = '0' + val;
});

return hex.join('');
};


var hex2rgb = function(hex) {
var hex = parseInt(((hex.indexOf('#') > -1) ? hex.substring(1) : hex), 16);

return {
r: hex >> 16,
g: (hex & 0x00FF00) >> 8,
b: (hex & 0x0000FF)
};
};


var rgb2hsb = function(rgb) {
var hsb = { h: 0, s: 0, b: 0 };
var min = Math.min(rgb.r, rgb.g, rgb.b);
var max = Math.max(rgb.r, rgb.g, rgb.b);
var delta = max - min;
hsb.b = max;
hsb.s = max != 0 ? 255 * delta / max : 0;
if( hsb.s != 0 ) {
if( rgb.r == max ) {
hsb.h = (rgb.g - rgb.b) / delta;
} else if( rgb.g == max ) {
hsb.h = 2 + (rgb.b - rgb.r) / delta;
} else {
hsb.h = 4 + (rgb.r - rgb.g) / delta;
}
} else {
hsb.h = -1;
}
hsb.h *= 60;
if( hsb.h < 0 ) {
hsb.h += 360;
}
hsb.s *= 100/255;
hsb.b *= 100/255;
return hsb;
};


var hex2hsb = function(hex) {
var hsb = rgb2hsb(hex2rgb(hex));
// Zero out hue marker for black, white, and grays (saturation === 0)
if( hsb.s === 0 ) hsb.h = 360;
return hsb;
};


var hsb2hex = function(hsb) {
return rgb2hex(hsb2rgb(hsb));
};


//
// Handle calls to $([selector]).miniColors()
//
switch(o) {

case 'readonly':

$(this).each( function() {
$(this).attr('readonly', data);
});

return $(this);

break;

case 'disabled':

$(this).each( function() {
if( data ) {
disable($(this));
} else {
enable($(this));
}
});

return $(this);

case 'value':

$(this).each( function() {
$(this).val(data).trigger('keyup');
});

return $(this);

break;

case 'destroy':

$(this).each( function() {
destroy($(this));
});

return $(this);

default:

if( !o ) o = {};

$(this).each( function() {

// Must be called on an input element
if( $(this)[0].tagName.toLowerCase() !== 'input' ) return;

// If a trigger is present, the control was already created
if( $(this).data('trigger') ) return;

// Create the control
create($(this), o, data);

});

return $(this);

}


}


});

})(jQuery);