path: root/library/bootstrap-colorpicker/src/js/colorpicker.js

/*!
 * Bootstrap Colorpicker
 * http://mjolnic.github.io/bootstrap-colorpicker/
 *
 * Originally written by (c) 2012 Stefan Petre
 * Licensed under the Apache License v2.0
 * http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 * @todo Update DOCS
 */

(function( factory ) {
    "use strict";
    if(typeof define === 'function' && define.amd) {
            define(['jquery'], factory);
    }
    else if(window.jQuery && !window.jQuery.fn.colorpicker) {
            factory(window.jQuery);
    }
}
(function($) {
    'use strict';

    '{{color}}';

    var defaults = {
        horizontal: false, // horizontal mode layout ?
        inline: false, //forces to show the colorpicker as an inline element
        color: false, //forces a color
        format: false, //forces a format
        input: 'input', // children input selector
        container: false, // container selector
        component: '.add-on, .input-group-addon', // children component selector
        sliders: {
            saturation: {
                maxLeft: 100,
                maxTop: 100,
                callLeft: 'setSaturation',
                callTop: 'setBrightness'
            },
            hue: {
                maxLeft: 0,
                maxTop: 100,
                callLeft: false,
                callTop: 'setHue'
            },
            alpha: {
                maxLeft: 0,
                maxTop: 100,
                callLeft: false,
                callTop: 'setAlpha'
            }
        },
        slidersHorz: {
            saturation: {
                maxLeft: 100,
                maxTop: 100,
                callLeft: 'setSaturation',
                callTop: 'setBrightness'
            },
            hue: {
                maxLeft: 100,
                maxTop: 0,
                callLeft: 'setHue',
                callTop: false
            },
            alpha: {
                maxLeft: 100,
                maxTop: 0,
                callLeft: 'setAlpha',
                callTop: false
            }
        },
        template: '<div class="colorpicker dropdown-menu">' +
            '<div class="colorpicker-saturation"><i><b></b></i></div>' +
            '<div class="colorpicker-hue"><i></i></div>' +
            '<div class="colorpicker-alpha"><i></i></div>' +
            '<div class="colorpicker-color"><div /></div>' +
            '</div>'
    };

    var Colorpicker = function(element, options) {
        this.element = $(element).addClass('colorpicker-element');
        this.options = $.extend({}, defaults, this.element.data(), options);
        this.component = this.options.component;
        this.component = (this.component !== false) ? this.element.find(this.component) : false;
        if (this.component && (this.component.length === 0)) {
            this.component = false;
        }
        this.container = (this.options.container === true) ? this.element : this.options.container;
        this.container = (this.container !== false) ? $(this.container) : false;

        // Is the element an input? Should we search inside for any input?
        this.input = this.element.is('input') ? this.element : (this.options.input ?
            this.element.find(this.options.input) : false);
        if (this.input && (this.input.length === 0)) {
            this.input = false;
        }
        // Set HSB color
        this.color = new Color(this.options.color !== false ? this.options.color : this.getValue());
        this.format = this.options.format !== false ? this.options.format : this.color.origFormat;

        // Setup picker
        this.picker = $(this.options.template);
        if (this.options.inline) {
            this.picker.addClass('colorpicker-inline colorpicker-visible');
        } else {
            this.picker.addClass('colorpicker-hidden');
        }
        if (this.options.horizontal) {
            this.picker.addClass('colorpicker-horizontal');
        }
        if (this.format === 'rgba' || this.format === 'hsla') {
            this.picker.addClass('colorpicker-with-alpha');
        }
        this.picker.on('mousedown.colorpicker', $.proxy(this.mousedown, this));
        this.picker.appendTo(this.container ? this.container : $('body'));

        // Bind events
        if (this.input !== false) {
            this.input.on({
                'keyup.colorpicker': $.proxy(this.keyup, this)
            });
            if (this.component === false) {
                this.element.on({
                    'focus.colorpicker': $.proxy(this.show, this)
                });
            }
            if (this.options.inline === false) {
                this.element.on({
                    'focusout.colorpicker': $.proxy(this.hide, this)
                });
            }
        }

        if (this.component !== false) {
            this.component.on({
                'click.colorpicker': $.proxy(this.show, this)
            });
        }

        if ((this.input === false) && (this.component === false)) {
            this.element.on({
                'click.colorpicker': $.proxy(this.show, this)
            });
        }
        this.update();

        $($.proxy(function() {
            this.element.trigger('create');
        }, this));
    };

    Colorpicker.version = '2.0.0-beta';

    Colorpicker.Color = Color;

    Colorpicker.prototype = {
        constructor: Colorpicker,
        destroy: function() {
            this.picker.remove();
            this.element.removeData('colorpicker').off('.colorpicker');
            if (this.input !== false) {
                this.input.off('.colorpicker');
            }
            if (this.component !== false) {
                this.component.off('.colorpicker');
            }
            this.element.removeClass('colorpicker-element');
            this.element.trigger({
                type: 'destroy'
            });
        },
        reposition: function() {
            if (this.options.inline !== false) {
                return false;
            }
            var type = this.container[0] !== document.body ? 'position' : 'offset';
            var offset = this.component ? this.component[type]() : this.element[type]();
            this.picker.css({
                top: offset.top + (this.component ? this.component.outerHeight() : this.element.outerHeight()),
                left: offset.left
            });
        },
        show: function(e) {
            if (this.isDisabled()) {
                return false;
            }
            this.picker.addClass('colorpicker-visible').removeClass('colorpicker-hidden');
            this.reposition();
            $(window).on('resize.colorpicker', $.proxy(this.reposition, this));
            if (!this.hasInput() && e) {
                if (e.stopPropagation && e.preventDefault) {
                    e.stopPropagation();
                    e.preventDefault();
                }
            }
            if (this.options.inline === false) {
                $(window.document).on({
                    'mousedown.colorpicker': $.proxy(this.hide, this)
                });
            }
            this.element.trigger({
                type: 'showPicker',
                color: this.color
            });
        },
        hide: function() {
            this.picker.addClass('colorpicker-hidden').removeClass('colorpicker-visible');
            $(window).off('resize.colorpicker', this.reposition);
            $(document).off({
                'mousedown.colorpicker': this.hide
            });
            this.update();
            this.element.trigger({
                type: 'hidePicker',
                color: this.color
            });
        },
        updateData: function(val) {
            val = val ||  this.color.toString(this.format);
            this.element.data('color', val);
            return val;
        },
        updateInput: function(val) {
            val = val ||  this.color.toString(this.format);
            if (this.input !== false) {
                this.input.prop('value', val);
            }
            return val;
        },
        updatePicker: function(val) {
            if (val !== undefined) {
                this.color = new Color(val);
            }
            var sl = (this.options.horizontal === false) ? this.options.sliders : this.options.slidersHorz;
            var icns = this.picker.find('i');
            if (icns.length === 0) {
                return;
            }
            if (this.options.horizontal === false) {
                sl = this.options.sliders;
                icns.eq(1).css('top', sl.hue.maxTop * (1 - this.color.value.h)).end()
                    .eq(2).css('top', sl.alpha.maxTop * (1 - this.color.value.a));
            } else {
                sl = this.options.slidersHorz;
                icns.eq(1).css('left', sl.hue.maxLeft * (1 - this.color.value.h)).end()
                    .eq(2).css('left', sl.alpha.maxLeft * (1 - this.color.value.a));
            }
            icns.eq(0).css({
                'top': sl.saturation.maxTop - this.color.value.b * sl.saturation.maxTop,
                'left': this.color.value.s * sl.saturation.maxLeft
            });
            this.picker.find('.colorpicker-saturation').css('backgroundColor', this.color.toHex(this.color.value.h, 1, 1, 1));
            this.picker.find('.colorpicker-alpha').css('backgroundColor', this.color.toHex());
            this.picker.find('.colorpicker-color, .colorpicker-color div').css('backgroundColor', this.color.toString(this.format));
            return val;
        },
        updateComponent: function(val) {
            val = val ||  this.color.toString(this.format);
            if (this.component !== false) {
                var icn = this.component.find('i').eq(0);
                if (icn.length > 0) {
                    icn.css({
                        'backgroundColor': val
                    });
                } else {
                    this.component.css({
                        'backgroundColor': val
                    });
                }
            }
            return val;
        },
        update: function(force) {
            var val = this.updateComponent();
            if ((this.getValue(false) !== false) || (force === true)) {
                // Update input/data only if the current value is not blank
                this.updateInput(val);
                this.updateData(val);
            }
            this.updatePicker();
            return val;

        },
        setValue: function(val) { // set color manually
            this.color = new Color(val);
            this.update();
            this.element.trigger({
                type: 'changeColor',
                color: this.color,
                value: val
            });
        },
        getValue: function(defaultValue) {
            defaultValue = (defaultValue === undefined) ? '#000000' : defaultValue;
            var val;
            if (this.hasInput()) {
                val = this.input.val();
            } else {
                val = this.element.data('color');
            }
            if ((val === undefined) || (val === '') || (val === null)) {
                // if not defined or empty, return default
                val = defaultValue;
            }
            return val;
        },
        hasInput: function() {
            return (this.input !== false);
        },
        isDisabled: function() {
            if (this.hasInput()) {
                return (this.input.prop('disabled') === true);
            }
            return false;
        },
        disable: function() {
            if (this.hasInput()) {
                this.input.prop('disabled', true);
                return true;
            }
            return false;
        },
        enable: function() {
            if (this.hasInput()) {
                this.input.prop('disabled', false);
                return true;
            }
            return false;
        },
        currentSlider: null,
        mousePointer: {
            left: 0,
            top: 0
        },
        mousedown: function(e) {
            e.stopPropagation();
            e.preventDefault();

            var target = $(e.target);

            //detect the slider and set the limits and callbacks
            var zone = target.closest('div');
            var sl = this.options.horizontal ? this.options.slidersHorz : this.options.sliders;
            if (!zone.is('.colorpicker')) {
                if (zone.is('.colorpicker-saturation')) {
                    this.currentSlider = $.extend({}, sl.saturation);
                } else if (zone.is('.colorpicker-hue')) {
                    this.currentSlider = $.extend({}, sl.hue);
                } else if (zone.is('.colorpicker-alpha')) {
                    this.currentSlider = $.extend({}, sl.alpha);
                } else {
                    return false;
                }
                var offset = zone.offset();
                //reference to guide's style
                this.currentSlider.guide = zone.find('i')[0].style;
                this.currentSlider.left = e.pageX - offset.left;
                this.currentSlider.top = e.pageY - offset.top;
                this.mousePointer = {
                    left: e.pageX,
                    top: e.pageY
                };
                //trigger mousemove to move the guide to the current position
                $(document).on({
                    'mousemove.colorpicker': $.proxy(this.mousemove, this),
                    'mouseup.colorpicker': $.proxy(this.mouseup, this)
                }).trigger('mousemove');
            }
            return false;
        },
        mousemove: function(e) {
            e.stopPropagation();
            e.preventDefault();
            var left = Math.max(
                0,
                Math.min(
                    this.currentSlider.maxLeft,
                    this.currentSlider.left + ((e.pageX || this.mousePointer.left) - this.mousePointer.left)
                )
            );
            var top = Math.max(
                0,
                Math.min(
                    this.currentSlider.maxTop,
                    this.currentSlider.top + ((e.pageY || this.mousePointer.top) - this.mousePointer.top)
                )
            );
            this.currentSlider.guide.left = left + 'px';
            this.currentSlider.guide.top = top + 'px';
            if (this.currentSlider.callLeft) {
                this.color[this.currentSlider.callLeft].call(this.color, left / 100);
            }
            if (this.currentSlider.callTop) {
                this.color[this.currentSlider.callTop].call(this.color, top / 100);
            }
            this.update(true);

            this.element.trigger({
                type: 'changeColor',
                color: this.color
            });
            return false;
        },
        mouseup: function(e) {
            e.stopPropagation();
            e.preventDefault();
            $(document).off({
                'mousemove.colorpicker': this.mousemove,
                'mouseup.colorpicker': this.mouseup
            });
            return false;
        },
        keyup: function(e) {
            if ((e.keyCode === 38)) {
                if (this.color.value.a < 1) {
                    this.color.value.a = Math.round((this.color.value.a + 0.01) * 100) / 100;
                }
                this.update(true);
            } else if ((e.keyCode === 40)) {
                if (this.color.value.a > 0) {
                    this.color.value.a = Math.round((this.color.value.a - 0.01) * 100) / 100;
                }
                this.update(true);
            } else {
                var val = this.input.val();
                this.color = new Color(val);
                if (this.getValue(false) !== false) {
                    this.updateData();
                    this.updateComponent();
                    this.updatePicker();
                }
            }
            this.element.trigger({
                type: 'changeColor',
                color: this.color,
                value: val
            });
        }
    };

    $.colorpicker = Colorpicker;

    $.fn.colorpicker = function(option) {
        var pickerArgs = arguments;

        return this.each(function() {
            var $this = $(this),
                inst = $this.data('colorpicker'),
                options = ((typeof option === 'object') ? option : {});
            if ((!inst) && (typeof option !== 'string')) {
                $this.data('colorpicker', new Colorpicker(this, options));
            } else {
                if (typeof option === 'string') {
                    inst[option].apply(inst, Array.prototype.slice.call(pickerArgs, 1));
                }
            }
        });
    };

    $.fn.colorpicker.constructor = Colorpicker;

}));