/**
 * Toolbar.js
 *
 * @fileoverview  jQuery plugin that creates tooltip style toolbars.
 * @link          http://paulkinzett.github.com/toolbar/
 * @author        Paul Kinzett (http://kinzett.co.nz/)
 * @version       1.0.4
 * @requires      jQuery 1.7+
 *
 * @license jQuery Toolbar Plugin v1.0.4
 * http://paulkinzett.github.com/toolbar/
 * Copyright 2013 Paul Kinzett (http://kinzett.co.nz/)
 * Released under the MIT license.
 * <https://raw.github.com/paulkinzett/toolbar/master/LICENSE.txt>
 */

if (typeof Object.create !== 'function') {
    Object.create = function (obj) {
        function F() {
        }

        F.prototype = obj;
        return new F();
    };
}

(function ($, window, document, undefined) {

    var ToolBar = {
        init: function (options, elem) {
            var self = this;
            self.elem = elem;
            self.$elem = $(elem);
            self.options = $.extend({}, $.fn.toolbar.options, options);
            self.toolbar = $('<div class="tool-container gradient" />')
                .addClass('tool-' + self.options.position)
                .addClass('tool-rounded')
                .append('<div class="tool-items" />')
                .append('<div class="arrow" />')
                .appendTo('body')
                .css('opacity', 0)
                .hide();
            self.toolbar_arrow = self.toolbar.find('.arrow');
            self.initializeToolbar();
        },

        initializeToolbar: function () {
            var self = this;
            self.populateContent();
            self.setTrigger();
            self.toolbarWidth = self.toolbar.width();
        },

        setTrigger: function () {
            var self = this;

            self.$elem.on('click', function (event) {
                event.preventDefault();
                if (self.$elem.hasClass('pressed')) {
                    self.hide();
                } else {
                    self.show();
                }
            });

            if (self.options.hideOnClick) {
                $('html').on("click.toolbar", function (event) {
                    if (event.target != self.elem &&
                        self.$elem.has(event.target).length === 0 &&
                        self.toolbar.has(event.target).length === 0 &&
                        self.toolbar.is(":visible")) {
                        self.hide();
                    }
                });
            }

            $(window).resize(function (event) {
                event.stopPropagation();
                if (self.toolbar.is(":visible")) {
                    self.toolbarCss = self.getCoordinates(self.options.position, 20);
                    self.collisionDetection();
                    self.toolbar.css(self.toolbarCss);
                    self.toolbar_arrow.css(self.arrowCss);
                }
            });
        },

        populateContent: function () {
            var self = this;
            var location = self.toolbar.find('.tool-items');
            var content = $(self.options.content).clone(true).find('a').addClass('tool-item gradient');
            location.html(content);
            location.find('.tool-item').on('click', function (event) {
                event.preventDefault();
                self.$elem.trigger('toolbarItemClick', this);
            });
        },

        calculatePosition: function () {
            var self = this;
            self.arrowCss = {};
            self.toolbarCss = self.getCoordinates(self.options.position, 0);
            self.toolbarCss.position = 'absolute';
            self.toolbarCss.zIndex = self.options.zIndex;
            self.collisionDetection();
            self.toolbar.css(self.toolbarCss);
            self.toolbar_arrow.css(self.arrowCss);
        },

        getCoordinates: function (position, adjustment) {
            var self = this;
            self.coordinates = self.$elem.offset();

            if (self.options.adjustment && self.options.adjustment[self.options.position]) {
                adjustment = self.options.adjustment[self.options.position] + adjustment;
            }

            switch (self.options.position) {
                case 'top':
                    return {
                        left: self.coordinates.left - (self.toolbar.width() / 2) + (self.$elem.outerWidth() / 2),
                        top: self.coordinates.top - self.$elem.height() - adjustment,
                        right: 'auto'
                    };
                case 'left':
                    return {
                        left: self.coordinates.left - (self.toolbar.width() / 2) - (self.$elem.width() / 2) - adjustment,
                        top: self.coordinates.top - (self.toolbar.height() / 2) + (self.$elem.outerHeight() / 2),
                        right: 'auto'
                    };
                case 'right':
                    return {
                        left: self.coordinates.left + (self.toolbar.width() / 2) + (self.$elem.width() / 3) + adjustment,
                        top: self.coordinates.top - (self.toolbar.height() / 2) + (self.$elem.outerHeight() / 2),
                        right: 'auto'
                    };
                case 'bottom':
                    return {
                        left: self.coordinates.left - (self.toolbar.width() / 2) + (self.$elem.outerWidth() / 2),
                        top: self.coordinates.top + self.$elem.height() + adjustment,
                        right: 'auto'
                    };
            }
        },

        collisionDetection: function () {
            var self = this;
            var edgeOffset = 20;
            if (self.options.position == 'top' || self.options.position == 'bottom') {
                self.arrowCss = {left: '50%', right: '50%'};
                if (self.toolbarCss.left < edgeOffset) {
                    self.toolbarCss.left = edgeOffset;
                    self.arrowCss.left = self.$elem.offset().left + self.$elem.width() / 2 - (edgeOffset);
                }
                else if (($(window).width() - (self.toolbarCss.left + self.toolbarWidth)) < edgeOffset) {
                    self.toolbarCss.right = edgeOffset;
                    self.toolbarCss.left = 'auto';
                    self.arrowCss.left = 'auto';
                    self.arrowCss.right = ($(window).width() - self.$elem.offset().left) - (self.$elem.width() / 2) - (edgeOffset) - 5;
                }
            }
        },

        show: function () {
            var self = this;
            var animation = {'opacity': 1};

            self.$elem.addClass('pressed');
            self.calculatePosition();

            switch (self.options.position) {
                case 'top':
                    animation.top = '-=20';
                    break;
                case 'left':
                    animation.left = '-=20';
                    break;
                case 'right':
                    animation.left = '+=20';
                    break;
                case 'bottom':
                    animation.top = '+=20';
                    break;
            }

            self.toolbar.show().animate(animation, 200);
            self.$elem.trigger('toolbarShown');
        },

        hide: function () {
            var self = this;
            var animation = {'opacity': 0};

            self.$elem.removeClass('pressed');

            switch (self.options.position) {
                case 'top':
                    animation.top = '+=20';
                    break;
                case 'left':
                    animation.left = '+=20';
                    break;
                case 'right':
                    animation.left = '-=20';
                    break;
                case 'bottom':
                    animation.top = '-=20';
                    break;
            }

            self.toolbar.animate(animation, 200, function () {
                self.toolbar.hide();
            });

            self.$elem.trigger('toolbarHidden');
        },

        getToolbarElement: function () {
            return this.toolbar.find('.tool-items');
        }
    };

    $.fn.toolbar = function (options) {
        if ($.isPlainObject(options)) {
            return this.each(function () {
                var toolbarObj = Object.create(ToolBar);
                toolbarObj.init(options, this);
                $(this).data('toolbarObj', toolbarObj);
            });
        } else if (typeof options === 'string' && options.indexOf('_') !== 0) {
            var toolbarObj = $(this).data('toolbarObj');
            var method = toolbarObj[options];
            return method.apply(toolbarObj, $.makeArray(arguments).slice(1));
        }
    };

    $.fn.toolbar.options = {
        content: '#myContent',
        position: 'top',
        hideOnClick: false,
        zIndex: 120
    };

})(jQuery, window, document);