/**
 *
 * Color picker
 * Author: Stefan Petre www.eyecon.ro
 * 
 */
(function ($) {
    var ColorPicker = function () {
        var
        ids = {},
        inAction,
        charMin = 65,
        visible,
        tpl = '<div class="colorpicker"><div class="colorpicker_color"><div><div></div></div></div><div class="colorpicker_hue"><div></div></div><div class="colorpicker_new_color"></div><div class="colorpicker_current_color"></div><div class="colorpicker_hex"><input type="text" maxlength="6" size="6" /></div><div class="colorpicker_rgb_r colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_rgb_g colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_rgb_b colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_hsb_h colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_hsb_s colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_hsb_b colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_submit"></div></div>',
        defaults = {
            eventName: 'click',
            onShow: function () {},
            onBeforeShow: function(){},
            onHide: function () {},
            onChange: function () {},
            onSubmit: function () {},
            color: 'ff0000',
            livePreview: true,
            flat: false
        },
        fillRGBFields = function  (hsb, cal) {
            var rgb = HSBToRGB(hsb);
            $(cal).data('colorpicker').fields
            .eq(1).val(rgb.r).end()
            .eq(2).val(rgb.g).end()
            .eq(3).val(rgb.b).end();
        },
        fillHSBFields = function  (hsb, cal) {
            $(cal).data('colorpicker').fields
            .eq(4).val(hsb.h).end()
            .eq(5).val(hsb.s).end()
            .eq(6).val(hsb.b).end();
        },
        fillHexFields = function (hsb, cal) {
            $(cal).data('colorpicker').fields
            .eq(0).val(HSBToHex(hsb)).end();
        },
        setSelector = function (hsb, cal) {
            $(cal).data('colorpicker').selector.css('backgroundColor', '#' + HSBToHex({
                h: hsb.h, 
                s: 100, 
                b: 100
            }));
            $(cal).data('colorpicker').selectorIndic.css({
                left: parseInt(150 * hsb.s/100, 10),
                top: parseInt(150 * (100-hsb.b)/100, 10)
            });
        },
        setHue = function (hsb, cal) {
            $(cal).data('colorpicker').hue.css('top', parseInt(150 - 150 * hsb.h/360, 10));
        },
        setCurrentColor = function (hsb, cal) {
            $(cal).data('colorpicker').currentColor.css('backgroundColor', '#' + HSBToHex(hsb));
        },
        setNewColor = function (hsb, cal) {
            $(cal).data('colorpicker').newColor.css('backgroundColor', '#' + HSBToHex(hsb));
        },
        keyDown = function (ev) {
            var pressedKey = ev.charCode || ev.keyCode || -1;
            if ((pressedKey > charMin && pressedKey <= 90) || pressedKey == 32) {
                return false;
            }
            var cal = $(this).parent().parent();
            if (cal.data('colorpicker').livePreview === true) {
                change.apply(this);
            }
        },
        change = function (ev) {
            var cal = $(this).parent().parent(), col;
            if (this.parentNode.className.indexOf('_hex') > 0) {
                cal.data('colorpicker').color = col = HexToHSB(fixHex(this.value));
            } else if (this.parentNode.className.indexOf('_hsb') > 0) {
                cal.data('colorpicker').color = col = fixHSB({
                    h: parseInt(cal.data('colorpicker').fields.eq(4).val(), 10),
                    s: parseInt(cal.data('colorpicker').fields.eq(5).val(), 10),
                    b: parseInt(cal.data('colorpicker').fields.eq(6).val(), 10)
                });
            } else {
                cal.data('colorpicker').color = col = RGBToHSB(fixRGB({
                    r: parseInt(cal.data('colorpicker').fields.eq(1).val(), 10),
                    g: parseInt(cal.data('colorpicker').fields.eq(2).val(), 10),
                    b: parseInt(cal.data('colorpicker').fields.eq(3).val(), 10)
                }));
            }
            if (ev) {
                fillRGBFields(col, cal.get(0));
                fillHexFields(col, cal.get(0));
                fillHSBFields(col, cal.get(0));
            }
            setSelector(col, cal.get(0));
            setHue(col, cal.get(0));
            setNewColor(col, cal.get(0));
            cal.data('colorpicker').onChange.apply(cal, [col, HSBToHex(col), HSBToRGB(col)]);
        },
        blur = function (ev) {
            var cal = $(this).parent().parent();
            cal.data('colorpicker').fields.parent().removeClass('colorpicker_focus')
        },
        focus = function () {
            charMin = this.parentNode.className.indexOf('_hex') > 0 ? 70 : 65;
            $(this).parent().parent().data('colorpicker').fields.parent().removeClass('colorpicker_focus');
            $(this).parent().addClass('colorpicker_focus');
        },
        downIncrement = function (ev) {
            var field = $(this).parent().find('input').focus();
            var current = {
                el: $(this).parent().addClass('colorpicker_slider'),
                max: this.parentNode.className.indexOf('_hsb_h') > 0 ? 360 : (this.parentNode.className.indexOf('_hsb') > 0 ? 100 : 255),
                y: ev.pageY,
                field: field,
                val: parseInt(field.val(), 10),
                preview: $(this).parent().parent().data('colorpicker').livePreview					
            };
            $(document).bind('mouseup', current, upIncrement);
            $(document).bind('mousemove', current, moveIncrement);
        },
        moveIncrement = function (ev) {
            ev.data.field.val(Math.max(0, Math.min(ev.data.max, parseInt(ev.data.val + ev.pageY - ev.data.y, 10))));
            if (ev.data.preview) {
                change.apply(ev.data.field.get(0), [true]);
            }
            return false;
        },
        upIncrement = function (ev) {
            change.apply(ev.data.field.get(0), [true]);
            ev.data.el.removeClass('colorpicker_slider').find('input').focus();
            $(document).unbind('mouseup', upIncrement);
            $(document).unbind('mousemove', moveIncrement);
            return false;
        },
        downHue = function (ev) {
            var current = {
                cal: $(this).parent(),
                y: $(this).offset().top
            };
            current.preview = current.cal.data('colorpicker').livePreview;
            $(document).bind('mouseup', current, upHue);
            $(document).bind('mousemove', current, moveHue);
        },
        moveHue = function (ev) {
            change.apply(
                ev.data.cal.data('colorpicker')
                .fields
                .eq(4)
                .val(parseInt(360*(150 - Math.max(0,Math.min(150,(ev.pageY - ev.data.y))))/150, 10))
                .get(0),
                [ev.data.preview]
                );
            return false;
        },
        upHue = function (ev) {
            fillRGBFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            fillHexFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            $(document).unbind('mouseup', upHue);
            $(document).unbind('mousemove', moveHue);
            return false;
        },
        downSelector = function (ev) {
            var current = {
                cal: $(this).parent(),
                pos: $(this).offset()
            };
            current.preview = current.cal.data('colorpicker').livePreview;
            $(document).bind('mouseup', current, upSelector);
            $(document).bind('mousemove', current, moveSelector);
        },
        moveSelector = function (ev) {
            change.apply(
                ev.data.cal.data('colorpicker')
                .fields
                .eq(6)
                .val(parseInt(100*(150 - Math.max(0,Math.min(150,(ev.pageY - ev.data.pos.top))))/150, 10))
                .end()
                .eq(5)
                .val(parseInt(100*(Math.max(0,Math.min(150,(ev.pageX - ev.data.pos.left))))/150, 10))
                .get(0),
                [ev.data.preview]
                );
            return false;
        },
        upSelector = function (ev) {
            fillRGBFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            fillHexFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
            $(document).unbind('mouseup', upSelector);
            $(document).unbind('mousemove', moveSelector);
            return false;
        },
        enterSubmit = function (ev) {
            $(this).addClass('colorpicker_focus');
        },
        leaveSubmit = function (ev) {
            $(this).removeClass('colorpicker_focus');
        },
        clickSubmit = function (ev) {
            var cal = $(this).parent();
            var col = cal.data('colorpicker').color;
            cal.data('colorpicker').origColor = col;
            setCurrentColor(col, cal.get(0));
            cal.data('colorpicker').onSubmit(col, HSBToHex(col), HSBToRGB(col));
        },
        show = function (ev) {
            var cal = $('#' + $(this).data('colorpickerId'));
            cal.data('colorpicker').onBeforeShow.apply(this, [cal.get(0)]);
            var pos = $(this).offset();
            var viewPort = getViewport();
            var top = pos.top + this.offsetHeight;
            var left = pos.left;
            if (top + 176 > viewPort.t + viewPort.h) {
                top -= this.offsetHeight + 176;
            }
            if (left + 356 > viewPort.l + viewPort.w) {
                left -= 356;
            }
            cal.css({
                left: left + 'px', 
                top: top + 'px'
                });
            if (cal.data('colorpicker').onShow.apply(this, [cal.get(0)]) != false) {
                cal.show();
            }
            $(document).bind('mousedown', {
                cal: cal
            }, hide);
            return false;
        },
        hide = function (ev) {
            if (!isChildOf(ev.data.cal.get(0), ev.target, ev.data.cal.get(0))) {
                if (ev.data.cal.data('colorpicker').onHide.apply(this, [ev.data.cal.get(0)]) != false) {
                    ev.data.cal.hide();
                }
                $(document).unbind('mousedown', hide);
            }
        },
        isChildOf = function(parentEl, el, container) {
            if (parentEl == el) {
                return true;
            }
            if (parentEl.contains) {
                return parentEl.contains(el);
            }
            if ( parentEl.compareDocumentPosition ) {
                return !!(parentEl.compareDocumentPosition(el) & 16);
            }
            var prEl = el.parentNode;
            while(prEl && prEl != container) {
                if (prEl == parentEl)
                    return true;
                prEl = prEl.parentNode;
            }
            return false;
        },
        getViewport = function () {
            var m = document.compatMode == 'CSS1Compat';
            return {
                l : window.pageXOffset || (m ? document.documentElement.scrollLeft : document.body.scrollLeft),
                t : window.pageYOffset || (m ? document.documentElement.scrollTop : document.body.scrollTop),
                w : window.innerWidth || (m ? document.documentElement.clientWidth : document.body.clientWidth),
                h : window.innerHeight || (m ? document.documentElement.clientHeight : document.body.clientHeight)
            };
        },
        fixHSB = function (hsb) {
            return {
                h: Math.min(360, Math.max(0, hsb.h)),
                s: Math.min(100, Math.max(0, hsb.s)),
                b: Math.min(100, Math.max(0, hsb.b))
            };
        }, 
        fixRGB = function (rgb) {
            return {
                r: Math.min(255, Math.max(0, rgb.r)),
                g: Math.min(255, Math.max(0, rgb.g)),
                b: Math.min(255, Math.max(0, rgb.b))
            };
        },
        fixHex = function (hex) {
            var len = 6 - hex.length;
            if (len > 0) {
                var o = [];
                for (var i=0; i<len; i++) {
                    o.push('0');
                }
                o.push(hex);
                hex = o.join('');
            }
            return hex;
        }, 
        HexToRGB = function (hex) {
            var hex = parseInt(((hex.indexOf('#') > -1) ? hex.substring(1) : hex), 16);
            return {
                r: hex >> 16, 
                g: (hex & 0x00FF00) >> 8, 
                b: (hex & 0x0000FF)
                };
        },
        HexToHSB = function (hex) {
            return RGBToHSB(HexToRGB(hex));
        },
        RGBToHSB = function (rgb) {
            var hsb = {};
            hsb.b = Math.max(Math.max(rgb.r,rgb.g),rgb.b);
            hsb.s = (hsb.b <= 0) ? 0 : Math.round(100*(hsb.b - Math.min(Math.min(rgb.r,rgb.g),rgb.b))/hsb.b);
            hsb.b = Math.round((hsb.b /255)*100);
            if((rgb.r==rgb.g) && (rgb.g==rgb.b)) hsb.h = 0;
            else if(rgb.r>=rgb.g && rgb.g>=rgb.b) hsb.h = 60*(rgb.g-rgb.b)/(rgb.r-rgb.b);
            else if(rgb.g>=rgb.r && rgb.r>=rgb.b) hsb.h = 60  + 60*(rgb.g-rgb.r)/(rgb.g-rgb.b);
            else if(rgb.g>=rgb.b && rgb.b>=rgb.r) hsb.h = 120 + 60*(rgb.b-rgb.r)/(rgb.g-rgb.r);
            else if(rgb.b>=rgb.g && rgb.g>=rgb.r) hsb.h = 180 + 60*(rgb.b-rgb.g)/(rgb.b-rgb.r);
            else if(rgb.b>=rgb.r && rgb.r>=rgb.g) hsb.h = 240 + 60*(rgb.r-rgb.g)/(rgb.b-rgb.g);
            else if(rgb.r>=rgb.b && rgb.b>=rgb.g) hsb.h = 300 + 60*(rgb.r-rgb.b)/(rgb.r-rgb.g);
            else hsb.h = 0;
            hsb.h = Math.round(hsb.h);
            return hsb;
        },
        HSBToRGB = 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)
                };
        },
        RGBToHex = 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('');
        },
        HSBToHex = function (hsb) {
            return RGBToHex(HSBToRGB(hsb));
        };
        return {
            init: function (options) {
                options = $.extend({}, defaults, options||{});
                if (typeof options.color == 'string') {
                    options.color = HexToHSB(options.color);
                } else if (options.color.r != undefined && options.color.g != undefined && options.color.b != undefined) {
                    options.color = RGBToHSB(options.color);
                } else if (options.color.h != undefined && options.color.s != undefined && options.color.b != undefined) {
                    options.color = fixHSB(options.color);
                } else {
                    return this;
                }
                options.origColor = options.color;
                return this.each(function () {
                    if (!$(this).data('colorpickerId')) {
                        var id = 'collorpicker_' + parseInt(Math.random() * 1000);
                        $(this).data('colorpickerId', id);
                        var cal = $(tpl).attr('id', id);
                        if (options.flat) {
                            cal.appendTo(this).show();
                        } else {
                            cal.appendTo(document.body);
                        }
                        options.fields = cal
                        .find('input')
                        .bind('keydown', keyDown)
                        .bind('change', change)
                        .bind('blur', blur)
                        .bind('focus', focus);
                        cal.find('span').bind('mousedown', downIncrement);
                        options.selector = cal.find('div.colorpicker_color').bind('mousedown', downSelector);
                        options.selectorIndic = options.selector.find('div div');
                        options.hue = cal.find('div.colorpicker_hue div');
                        cal.find('div.colorpicker_hue').bind('mousedown', downHue);
                        options.newColor = cal.find('div.colorpicker_new_color');
                        options.currentColor = cal.find('div.colorpicker_current_color');
                        cal.data('colorpicker', options);
                        cal.find('div.colorpicker_submit')
                        .bind('mouseenter', enterSubmit)
                        .bind('mouseleave', leaveSubmit)
                        .bind('click', clickSubmit);
                        fillRGBFields(options.color, cal.get(0));
                        fillHSBFields(options.color, cal.get(0));
                        fillHexFields(options.color, cal.get(0));
                        setHue(options.color, cal.get(0));
                        setSelector(options.color, cal.get(0));
                        setCurrentColor(options.color, cal.get(0));
                        setNewColor(options.color, cal.get(0));
                        if (options.flat) {
                            cal.css({
                                position: 'relative',
                                display: 'block'
                            });
                        } else {
                            $(this).bind(options.eventName, show);
                        }
                    }
                });
            },
            showPicker: function() {
                return this.each( function () {
                    if ($(this).data('colorpickerId')) {
                        show.apply(this);
                    }
                });
            },
            hidePicker: function() {
                return this.each( function () {
                    if ($(this).data('colorpickerId')) {
                        $('#' + $(this).data('colorpickerId')).hide();
                    }
                });
            },
            setColor: function(col) {
                if (typeof col == 'string') {
                    col = HexToHSB(col);
                } else if (col.r != undefined && col.g != undefined && col.b != undefined) {
                    col = RGBToHSB(col);
                } else if (col.h != undefined && col.s != undefined && col.b != undefined) {
                    col = fixHSB(col);
                } else {
                    return this;
                }
                return this.each(function(){
                    if ($(this).data('colorpickerId')) {
                        var cal = $('#' + $(this).data('colorpickerId'));
                        cal.data('colorpicker').color = col;
                        cal.data('colorpicker').origColor = col;
                        fillRGBFields(col, cal.get(0));
                        fillHSBFields(col, cal.get(0));
                        fillHexFields(col, cal.get(0));
                        setHue(col, cal.get(0));
                        setSelector(col, cal.get(0));
                        setCurrentColor(col, cal.get(0));
                        setNewColor(col, cal.get(0));
                    }
                });
            }
        };
    }();
    $.fn.extend({
        ColorPicker: ColorPicker.init,
        ColorPickerHide: ColorPicker.hide,
        ColorPickerShow: ColorPicker.show,
        ColorPickerSetColor: ColorPicker.setColor
    });
})(jQuery)
