/**
* jQuery plugin for Pretty looking right click context menu.
*
* Requires popup.js and popup.css to be included in your page. And jQuery, obviously.
*
* Usage:
*
*   $('.something').contextPopup({
*     title: 'Some title',
*     items: [
*       {label:'My Item', icon:'/some/icon1.png', action:function() { alert('hi'); }},
*       {label:'Item #2', icon:'/some/icon2.png', action:function() { alert('yo'); }},
*       null, // divider
*       {label:'Blahhhh', icon:'/some/icon3.png', action:function() { alert('bye'); }, isEnabled: function() { return false; }},
*     ]
*   });
*
* Icon needs to be 16x16. I recommend the Fugue icon set from: http://p.yusukekamiyamane.com/
*
* - Joe Walnes, 2011 http://joewalnes.com/
*   https://github.com/joewalnes/jquery-simple-context-menu
*
* MIT License: https://github.com/joewalnes/jquery-simple-context-menu/blob/master/LICENSE.txt
*/
jQuery.fn.contextPopup = function (menuData) {
    // Define default settings
    var settings = {
        contextMenuClass: 'contextMenuPlugin',
        gutterLineClass: 'gutterLine',
        headerClass: 'header',
        seperatorClass: 'divider',
        title: '',
        items: []
    };
    // merge them
    $.extend(settings, menuData);

    // Build popup menu HTML
    function createMenu(e) {
        var menu = $('<ul class="' + settings.contextMenuClass + '"><div class="' + settings.gutterLineClass + '"></div></ul>')
            .appendTo(document.body);
        if (settings.title) {
            $('<li class="' + settings.headerClass + '"></li>').text(settings.title).appendTo(menu);
        }
        $.each(settings.items, function (index, item) {
            if (item) {
                var rowCode = '<li><a href="#"><span></span></a></li>';
                // if(item.icon)
                //   rowCode += '<img>';
                // rowCode +=  '<span></span></a></li>';
                var row = $(rowCode).appendTo(menu);
                if (item.icon) {
                    var icon = $('<img>');
                    icon.attr('src', item.icon);
                    icon.insertBefore(row.find('span'));
                }
                row.find('span').text(item.label);

                if (item.isEnabled != undefined && !item.isEnabled()) {
                    row.addClass('disabled');
                } else if (item.action) {
                    row.find('a').click(function () { item.action(e); });
                }
            } else {
                $('<li class="' + settings.seperatorClass + '"></li>').appendTo(menu);
            }
        });
        menu.find('.' + settings.headerClass).text(settings.title);
        return menu;
    }

    // On contextmenu event (right click)
    this.bind('contextmenu', function (e) {
        var menu = createMenu(e)
            .show();

        var left = e.pageX + 5, /* nudge to the right, so the pointer is covering the title */
            top = e.pageY;
        if (top + menu.height() >= $(window).height()) {
            top -= menu.height();
        }
        if (left + menu.width() >= $(window).width()) {
            left -= menu.width();
        }

        // Create and show menu
        menu.css({ zIndex: 1000001, left: left, top: top })
            .bind('contextmenu', function () { return false; });

        // Cover rest of page with invisible div that when clicked will cancel the popup.
        var bg = $('<div></div>')
            .css({ left: 0, top: 0, width: '100%', height: '100%', position: 'absolute', zIndex: 1000000 })
            .appendTo(document.body)
            .bind('contextmenu click', function () {
                // If click or right click anywhere else on page: remove clean up.
                bg.remove();
                menu.remove();
                return false;
            });

        // When clicking on a link in menu: clean up (in addition to handlers on link already)
        menu.find('a').click(function () {
            bg.remove();
            menu.remove();
        });

        // Cancel event, so real browser popup doesn't appear.
        return false;
    });

    return this;
};