/**
* Copyright (c)2005-2009 Matt Kruse (javascripttoolbox.com)
*
* Dual licensed under the MIT and GPL licenses.
* This basically means you can use this code however you want for
* free, but don't claim to have written it yourself!
* Donations always accepted: http://www.JavascriptToolbox.com/donate/
*
* Please do not link to the .js files on javascripttoolbox.com from
* your site. Copy the files locally to your server instead.
*
*/
/**
* jquery.contextmenu.js
* jQuery Plugin for Context Menus
* http://www.JavascriptToolbox.com/lib/contextmenu/
*
* Copyright (c) 2008 Matt Kruse (javascripttoolbox.com)
* Dual licensed under the MIT and GPL licenses.
*
* @version 1.0
* @history 1.0 2008-10-20 Initial Release
* @todo slideUp doesn't work in IE - because of iframe?
* @todo Hide all other menus when contextmenu is shown?
* @todo More themes
* @todo Nested context menus
*/
; (function($) {
$.contextMenu = {
shadow: true,
shadowOffset: 0,
shadowOffsetX: 5,
shadowOffsetY: 5,
shadowWidthAdjust: -3,
shadowHeightAdjust: -3,
shadowOpacity: .2,
shadowClass: 'context-menu-shadow',
shadowColor: 'black',
offsetX: 0,
offsetY: 0,
appendTo: 'body',
direction: 'down',
constrainToScreen: true,
showTransition: 'show',
hideTransition: 'hide',
showSpeed: '',
hideSpeed: '',
showCallback: null,
hideCallback: null,
className: 'context-menu',
itemClassName: 'context-menu-item',
itemHoverClassName: 'context-menu-item-hover',
disabledItemClassName: 'context-menu-item-disabled',
disabledItemHoverClassName: 'context-menu-item-disabled-hover',
separatorClassName: 'context-menu-separator',
innerDivClassName: 'context-menu-item-inner',
themePrefix: 'context-menu-theme-',
theme: 'default',
separator: 'context-menu-separator', // A specific key to identify a separator
target: null, // The target of the context click, to be populated when triggered
menu: null, // The jQuery object containing the HTML object that is the menu itself
//shadowObj: null, // Shadow object
bgiframe: null, // The iframe object for IE6
shown: false, // Currently being shown?
useIframe: /*@cc_on@*//*@if (@_win32)true, @else @*/false,/*@end@*/ // This is a better check than looking at userAgent!
// Create the menu instance
create: function(menu, opts) {
var cmenu = $.extend({}, this, opts); // Clone all default properties to created object
// If a selector has been passed in, then use that as the menu
if (typeof menu == "string") {
cmenu.menu = $(menu);
}
// If a function has been passed in, call it each time the menu is shown to create the menu
else if (typeof menu == "function") {
cmenu.menuFunction = menu;
}
// Otherwise parse the Array passed in
else {
cmenu.menu = cmenu.createMenu(menu, cmenu);
}
if (cmenu.menu) {
cmenu.menu.css({ display: 'none' });
$(cmenu.appendTo).append(cmenu.menu);
}
// Create the shadow object if shadow is enabled
// if (cmenu.shadow) {
// cmenu.createShadow(cmenu); // Extracted to method for extensibility
// if (cmenu.shadowOffset) { cmenu.shadowOffsetX = cmenu.shadowOffsetY = cmenu.shadowOffset; }
//}
$('body').bind('contextmenu', function() { cmenu.hide(); }); // If right-clicked somewhere else in the document, hide this menu
return cmenu;
},
// Create an iframe object to go behind the menu
createIframe: function() {
return $('');
},
// Accept an Array representing a menu structure and turn it into HTML
createMenu: function(menu, cmenu) {
var className = cmenu.className;
$.each(cmenu.theme.split(","), function(i, n) { className += ' ' + cmenu.themePrefix + n });
var $t = $('').click(function() { cmenu.hide(); return false; }); // We wrap a table around it so width can be flexible
var $tr = $('|
');
var $td = $(' | ');
var $div = $('');
// Each menu item is specified as either:
// title:function
// or title: { property:value ... }
for (var i = 0; i < menu.length; i++) {
var m = menu[i];
if (m == $.contextMenu.separator) {
$div.append(cmenu.createSeparator());
}
else {
for (var opt in menu[i]) {
$div.append(cmenu.createMenuItem(opt, menu[i][opt])); // Extracted to method for extensibility
}
}
}
if (cmenu.useIframe) {
$td.append(cmenu.createIframe());
}
$t.append($tr.append($td.append($div)))
return $t;
},
// Create an individual menu item
createMenuItem: function(label, obj) {
var cmenu = this;
if (typeof obj == "function") { obj = { onclick: obj }; } // If passed a simple function, turn it into a property of an object
// Default properties, extended in case properties are passed
var o = $.extend({
onclick: function() { },
className: '',
hoverClassName: cmenu.itemHoverClassName,
icon: '',
disabled: false,
title: '',
hoverItem: cmenu.hoverItem,
hoverItemOut: cmenu.hoverItemOut
}, obj);
// If an icon is specified, hard-code the background-image style. Themes that don't show images should take this into account in their CSS
var iconStyle = (o.icon) ? 'background-image:url(' + o.icon + ');' : '';
var $div = $('')
// If the item is disabled, don't do anything when it is clicked
.click(function(e) { if (cmenu.isItemDisabled(this)) { return false; } else { return o.onclick.call(cmenu.target, this, cmenu, e) } })
// Change the class of the item when hovered over
.hover(function() { o.hoverItem.call(this, (cmenu.isItemDisabled(this)) ? cmenu.disabledItemHoverClassName : o.hoverClassName); }
, function() { o.hoverItemOut.call(this, (cmenu.isItemDisabled(this)) ? cmenu.disabledItemHoverClassName : o.hoverClassName); }
);
var $idiv = $('');
$div.append($idiv);
return $div;
},
// Create a separator row
createSeparator: function() {
return $('');
},
// Determine if an individual item is currently disabled. This is called each time the item is hovered or clicked because the disabled status may change at any time
isItemDisabled: function(item) { return $(item).is('.' + this.disabledItemClassName); },
// Functions to fire on hover. Extracted to methods for extensibility
hoverItem: function(c) { $(this).addClass(c); },
hoverItemOut: function(c) { $(this).removeClass(c); },
// Create the shadow object
// createShadow: function(cmenu) {
// cmenu.shadowObj = $('').css({ display: 'none', position: "absolute", zIndex: 9998, opacity: cmenu.shadowOpacity, backgroundColor: cmenu.shadowColor });
// $(cmenu.appendTo).append(cmenu.shadowObj);
// },
// Display the shadow object, given the position of the menu itself
// showShadow: function(x, y, e) {
// var cmenu = this;
// if (cmenu.shadow) {
// cmenu.shadowObj.css({
// width: (cmenu.menu.width() + cmenu.shadowWidthAdjust) + "px",
// height: (cmenu.menu.height() + cmenu.shadowHeightAdjust) + "px",
// top: (y + cmenu.shadowOffsetY) + "px",
// left: (x + cmenu.shadowOffsetX) + "px"
// }).addClass(cmenu.shadowClass)[cmenu.showTransition](cmenu.showSpeed);
// }
// },
// A hook to call before the menu is shown, in case special processing needs to be done.
// Return false to cancel the default show operation
beforeShow: function() { return true; },
// Show the context menu
show: function(t, e) {
var classElements = new Array();
var searchClass = "contextMenu";
var els = document.getElementsByTagName('*');
var elsLen = els.length;
var pattern = new RegExp('(^|\\\\s)' + searchClass + '(\\\\s|$)');
for (i = 0, j = 0; i < elsLen; i++) {
if (pattern.test(els[i].className)) {
classElements[j] = els[i];
j++;
}
}
if (classElements) {
for (var i = 0; i < classElements.length; i++) {
var obj = classElements[i];
obj.style.display = 'none';
}
}
var cmenu = this, x = e.pageX, y = e.pageY;
cmenu.target = t; // Preserve the object that triggered this context menu so menu item click methods can see it
if (cmenu.beforeShow() !== false) {
// If the menu content is a function, call it to populate the menu each time it is displayed
if (cmenu.menuFunction) {
if (cmenu.menu) { $(cmenu.menu).remove(); }
cmenu.menu = cmenu.createMenu(cmenu.menuFunction(cmenu, t), cmenu);
cmenu.menu.css({ display: 'none' });
$(cmenu.appendTo).append(cmenu.menu);
}
var $c = cmenu.menu;
x += cmenu.offsetX; y += cmenu.offsetY;
var pos = cmenu.getPosition(x, y, cmenu, e); // Extracted to method for extensibility
// cmenu.showShadow(pos.x, pos.y, e);
// Resize the iframe if needed
if (cmenu.useIframe) {
$c.find('iframe').css({ width: $c.width() + cmenu.shadowOffsetX + cmenu.shadowWidthAdjust, height: $c.height() + cmenu.shadowOffsetY + cmenu.shadowHeightAdjust });
}
$c.css({ top: pos.y + "px", left: pos.x + "px", position: "absolute", zIndex: 9999 })[cmenu.showTransition](cmenu.showSpeed, ((cmenu.showCallback) ? function() { cmenu.showCallback.call(cmenu); } : null));
cmenu.shown = true;
$(document).one('click', null, function() { cmenu.hide() }); // Handle a single click to the document to hide the menu
}
},
// Find the position where the menu should appear, given an x,y of the click event
getPosition: function(clickX, clickY, cmenu, e) {
var x = clickX + cmenu.offsetX;
var y = clickY + cmenu.offsetY
var h = $(cmenu.menu).height();
var w = $(cmenu.menu).width();
var dir = cmenu.direction;
if (cmenu.constrainToScreen) {
var $w = $(window);
var wh = $w.height();
var ww = $w.width();
if (dir == "down" && (y + h - $w.scrollTop() > wh)) { dir = "up"; }
var maxRight = x + w - $w.scrollLeft();
if (maxRight > ww) { x -= (maxRight - ww); }
}
if (dir == "up") { y -= h; }
return { 'x': x, 'y': y };
},
// Hide the menu, of course
hide: function() {
var cmenu = this;
if (cmenu.shown) {
if (cmenu.iframe) { $(cmenu.iframe).hide(); }
if (cmenu.menu) { cmenu.menu[cmenu.hideTransition](cmenu.hideSpeed, ((cmenu.hideCallback) ? function() { cmenu.hideCallback.call(cmenu); } : null)); }
//if (cmenu.shadow) { cmenu.shadowObj[cmenu.hideTransition](cmenu.hideSpeed); }
}
cmenu.shown = false;
}
};
// This actually adds the .contextMenu() function to the jQuery namespace
$.fn.contextMenu = function(menu, options) {
var cmenu = $.contextMenu.create(menu, options);
return this.each(function() {
$(this).bind('contextmenu', function(e) { cmenu.show(this, e); return false; });
});
};
})(jQuery);