// jQuery Context Menu Plugin
//
// Version 1.00
//
// Cory S.N. LaViska
// A Beautiful Site (http://abeautifulsite.net/)
//
// Visit http://abeautifulsite.net/notebook/80 for usage and more information
//
// Terms of Use
//
// This software is licensed under a Creative Commons License and is copyrighted
// (C)2008 by Cory S.N. LaViska.
//
// For details, visit http://creativecommons.org/licenses/by/3.0/us/
//

/*************************************[ Best browser detection ]****************************************/
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();


if(jQuery)( function() {
	$.extend($.fn, {
		
		contextMenu: function(o, callback) {
			// Defaults
			if( o.menu == undefined ) return false;
			if( o.inSpeed == undefined ) o.inSpeed = 150;
			if( o.outSpeed == undefined ) o.outSpeed = 75;
			// 0 needs to be -1 for expected results (no fade)
			if( o.inSpeed == 0 ) o.inSpeed = -1;
			if( o.outSpeed == 0 ) o.outSpeed = -1;
			// Loop each context menu
			$(this).each( function() {
				var el = $(this);
				var offset = $(el).offset();
				// Add contextMenu class
				$('#' + o.menu).addClass('contextMenu');
				
				if(BrowserDetect.browser == 'Safari') {
					$(this).bind('contextmenu', function(e) {
						var evt = e;
	
	
						var srcElement = $(this);
						$(this).unbind('mouseup');
						if( evt.button == 2 ) {
							// Hide context menus that may be showing
							$(".contextMenu").hide();
							// Get this context menu
							var menu = $('#' + o.menu);
							
							if( $(el).hasClass('disabled') ) return false;
							
							// Detect mouse position
							var d = {}, x, y;
							if( self.innerHeight ) {
								d.pageYOffset = self.pageYOffset;
								d.pageXOffset = self.pageXOffset;
								d.innerHeight = self.innerHeight;
								d.innerWidth = self.innerWidth;
							} else if( document.documentElement &&
								document.documentElement.clientHeight ) {
								d.pageYOffset = document.documentElement.scrollTop;
								d.pageXOffset = document.documentElement.scrollLeft;
								d.innerHeight = document.documentElement.clientHeight;
								d.innerWidth = document.documentElement.clientWidth;
							} else if( document.body ) {
								d.pageYOffset = document.body.scrollTop;
								d.pageXOffset = document.body.scrollLeft;
								d.innerHeight = document.body.clientHeight;
								d.innerWidth = document.body.clientWidth;
							}
							(e.pageX) ? x = e.pageX : x = e.clientX + d.scrollLeft;
							(e.pageY) ? y = e.pageY : x = e.clientY + d.scrollTop;
							
							// Show the menu
							$(document).unbind('click');
							$(menu).css({ top: y, left: x }).fadeIn(o.inSpeed);
							// Hover events
							$(menu).find('A').mouseover( function() {
								$(menu).find('LI.hover').removeClass('hover');
								$(this).parent().addClass('hover');
							}).mouseout( function() {
								$(menu).find('LI.hover').removeClass('hover');
							});
							
							// Keyboard
							$(document).keypress( function(e) {
								switch( e.keyCode ) {
									case 38: // up
										if( $(menu).find('LI.hover').size() == 0 ) {
											$(menu).find('LI:last').addClass('hover');
										} else {
											$(menu).find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
											if( $(menu).find('LI.hover').size() == 0 ) $(menu).find('LI:last').addClass('hover');
										}
									break;
									case 40: // down
										if( $(menu).find('LI.hover').size() == 0 ) {
											$(menu).find('LI:first').addClass('hover');
										} else {
											$(menu).find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
											if( $(menu).find('LI.hover').size() == 0 ) $(menu).find('LI:first').addClass('hover');
										}
									break;
									case 13: // enter
										$(menu).find('LI.hover A').trigger('click');
									break;
									case 27: // esc
										$(document).trigger('click');
									break
								}
							});
							
							// When items are selected
							$('#' + o.menu).find('A').unbind('click');
							$('#' + o.menu).find('LI:not(.disabled) A').click( function() {
								$(document).unbind('click').unbind('keypress');
								$(".contextMenu").hide();
								// Callback
								if( callback ) callback( $(this).attr('href'), $(this).attr('onclick'), $(this).attr('href').substr(1), $(srcElement), {x: x - offset.left, y: y - offset.top, docX: x, docY: y} );
								return false;
							});
							
							// Hide bindings
							setTimeout( function() { // Delay for Mozilla
								$(document).click( function() {
									$(document).unbind('click').unbind('keypress');
									$(menu).fadeOut(o.outSpeed);
									return false;
								});
							}, 0);
						}
	
					});
				}
				else {
					// Simulate a true right click
					$(this).mousedown( function(e) {
						var evt = e;
						$(this).mouseup( function(e) {
							var srcElement = $(this);
							$(this).unbind('mouseup');
							if( evt.button == 2 ) {
								// Hide context menus that may be showing
								$(".contextMenu").hide();
								// Get this context menu
								var menu = $('#' + o.menu);
								
								if( $(el).hasClass('disabled') ) return false;
								
								// Detect mouse position
								var d = {}, x, y;
								if( self.innerHeight ) {
									d.pageYOffset = self.pageYOffset;
									d.pageXOffset = self.pageXOffset;
									d.innerHeight = self.innerHeight;
									d.innerWidth = self.innerWidth;
								} else if( document.documentElement &&
									document.documentElement.clientHeight ) {
									d.pageYOffset = document.documentElement.scrollTop;
									d.pageXOffset = document.documentElement.scrollLeft;
									d.innerHeight = document.documentElement.clientHeight;
									d.innerWidth = document.documentElement.clientWidth;
								} else if( document.body ) {
									d.pageYOffset = document.body.scrollTop;
									d.pageXOffset = document.body.scrollLeft;
									d.innerHeight = document.body.clientHeight;
									d.innerWidth = document.body.clientWidth;
								}
								(e.pageX) ? x = e.pageX : x = e.clientX + d.scrollLeft;
								(e.pageY) ? y = e.pageY : x = e.clientY + d.scrollTop;
								
								// Show the menu
								$(document).unbind('click');
								$(menu).css({ top: y, left: x }).fadeIn(o.inSpeed);
								// Hover events
								$(menu).find('A').mouseover( function() {
									$(menu).find('LI.hover').removeClass('hover');
									$(this).parent().addClass('hover');
								}).mouseout( function() {
									$(menu).find('LI.hover').removeClass('hover');
								});
								
								// Keyboard
								$(document).keypress( function(e) {
									switch( e.keyCode ) {
										case 38: // up
											if( $(menu).find('LI.hover').size() == 0 ) {
												$(menu).find('LI:last').addClass('hover');
											} else {
												$(menu).find('LI.hover').removeClass('hover').prevAll('LI:not(.disabled)').eq(0).addClass('hover');
												if( $(menu).find('LI.hover').size() == 0 ) $(menu).find('LI:last').addClass('hover');
											}
										break;
										case 40: // down
											if( $(menu).find('LI.hover').size() == 0 ) {
												$(menu).find('LI:first').addClass('hover');
											} else {
												$(menu).find('LI.hover').removeClass('hover').nextAll('LI:not(.disabled)').eq(0).addClass('hover');
												if( $(menu).find('LI.hover').size() == 0 ) $(menu).find('LI:first').addClass('hover');
											}
										break;
										case 13: // enter
											$(menu).find('LI.hover A').trigger('click');
										break;
										case 27: // esc
											$(document).trigger('click');
										break
									}
								});
								
								// When items are selected
								$('#' + o.menu).find('A').unbind('click');
								$('#' + o.menu).find('LI:not(.disabled) A').click( function() {
									$(document).unbind('click').unbind('keypress');
									$(".contextMenu").hide();
									// Callback
									if( callback ) callback( $(this).attr('href'), $(this).attr('onclick'), $(this).attr('href').substr(1), $(srcElement), {x: x - offset.left, y: y - offset.top, docX: x, docY: y} );
									return false;
								});
								
								// Hide bindings
								setTimeout( function() { // Delay for Mozilla
									$(document).click( function() {
										$(document).unbind('click').unbind('keypress');
										$(menu).fadeOut(o.outSpeed);
										return false;
									});
								}, 0);
							}
						});
					});
				}
				// Disable text selection
				if( $.browser.mozilla ) {
					$('#' + o.menu).each( function() { $(this).css({ 'MozUserSelect' : 'none' }); });
				} else if( $.browser.msie ) {
					$('#' + o.menu).each( function() { $(this).bind('selectstart.disableTextSelect', function() { return false; }); });
				} else {
					$('#' + o.menu).each(function() { $(this).bind('mousedown.disableTextSelect', function() { return false; }); });
				}
				// Disable browser context menu (requires both selectors to work in IE/Safari + FF/Chrome)
				$(el).add('UL.contextMenu').bind('contextmenu', function() { return false; });
				
			});
			return $(this);
		},
		
		// Disable context menu items on the fly
		disableContextMenuItems: function(o) {
			if( o == undefined ) {
				// Disable all
				$(this).find('LI').addClass('disabled');
				return( $(this) );
			}
			$(this).each( function() {
				if( o != undefined ) {
					var d = o.split(',');
					for( var i = 0; i < d.length; i++ ) {
						$(this).find('A[href="' + d[i] + '"]').parent().addClass('disabled');
						
					}
				}
			});
			return( $(this) );
		},
		
		// Enable context menu items on the fly
		enableContextMenuItems: function(o) {
			if( o == undefined ) {
				// Enable all
				$(this).find('LI.disabled').removeClass('disabled');
				return( $(this) );
			}
			$(this).each( function() {
				if( o != undefined ) {
					var d = o.split(',');
					for( var i = 0; i < d.length; i++ ) {
						$(this).find('A[href="' + d[i] + '"]').parent().removeClass('disabled');
						
					}
				}
			});
			return( $(this) );
		},
		
		// Disable context menu(s)
		disableContextMenu: function() {
			$(this).each( function() {
				$(this).addClass('disabled');
			});
			return( $(this) );
		},
		
		// Enable context menu(s)
		enableContextMenu: function() {
			$(this).each( function() {
				$(this).removeClass('disabled');
			});
			return( $(this) );
		},
		
		// Destroy context menu(s)
		destroyContextMenu: function() {
			// Destroy specified context menus
			$(this).each( function() {
				// Disable action
				$(this).unbind('mousedown').unbind('mouseup');
			});
			return( $(this) );
		}
		
	});
})(jQuery);