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/*--------------------------------------------------------------------
Scripts for creating and manipulating custom menus based on standard <ul> markup
Version: 3.0, 03.31.2009
By: Maggie Costello Wachs (maggie@filamentgroup.com) and Scott Jehl (scott@filamentgroup.com)
http://www.filamentgroup.com
* reference articles: http://www.filamentgroup.com/lab/jquery_ipod_style_drilldown_menu/
Copyright (c) 2009 Filament Group
Dual licensed under the MIT (filamentgroup.com/examples/mit-license.txt) and GPL (filamentgroup.com/examples/gpl-license.txt) licenses.
--------------------------------------------------------------------*/
var allUIMenus = [];
$.fn.menu = function(options){
var caller = this;
var options = options;
var m = new Menu(caller, options);
allUIMenus.push(m);
$(this)
.mousedown(function(){
if (!m.menuOpen) { m.showLoading(); };
})
.click(function(){
if (m.menuOpen == false) { m.showMenu(); }
else { m.kill(); };
return false;
});
/* .mouseover(function(){
if (m.menuOpen == false) { m.showMenu(); }
else { m.kill(); };
return false;
}); */
};
function Menu(caller, options){
var menu = this;
var caller = $(caller);
var container = $('<div class="fg-menu-container ui-widget ui-widget-content ui-corner-all">'+options.content+'</div>');
this.menuOpen = false;
this.menuExists = false;
var options = jQuery.extend({
content: null,
width: 180, // width of menu container, must be set or passed in to calculate widths of child menus
maxHeight: 180, // max height of menu (if a drilldown: height does not include breadcrumb)
positionOpts: {
posX: 'left',
posY: 'bottom',
offsetX: 0,
offsetY: 0,
directionH: 'right',
directionV: 'down',
detectH: true, // do horizontal collision detection
detectV: true, // do vertical collision detection
linkToFront: false
},
showSpeed: 200, // show/hide speed in milliseconds
callerOnState: 'ui-state-active', // class to change the appearance of the link/button when the menu is showing
loadingState: 'ui-state-loading', // class added to the link/button while the menu is created
linkHover: 'ui-state-hover', // class for menu option hover state
linkHoverSecondary: 'li-hover', // alternate class, may be used for multi-level menus
// ----- multi-level menu defaults -----
crossSpeed: 200, // cross-fade speed for multi-level menus
crumbDefaultText: 'Choose an option:',
backLink: true, // in the ipod-style menu: instead of breadcrumbs, show only a 'back' link
backLinkText: 'Back',
flyOut: false, // multi-level menus are ipod-style by default; this parameter overrides to make a flyout instead
flyOutOnState: 'ui-state-default',
nextMenuLink: 'ui-icon-triangle-1-e', // class to style the link (specifically, a span within the link) used in the multi-level menu to show the next level
topLinkText: 'All',
nextCrumbLink: 'ui-icon-carat-1-e'
}, options);
var killAllMenus = function(){
$.each(allUIMenus, function(i){
if (allUIMenus[i].menuOpen) { allUIMenus[i].kill(); };
});
};
this.kill = function(){
caller
.removeClass(options.loadingState)
.removeClass('fg-menu-open')
.removeClass(options.callerOnState);
container.find('li').removeClass(options.linkHoverSecondary).find('a').removeClass(options.linkHover);
if (options.flyOutOnState) { container.find('li a').removeClass(options.flyOutOnState); };
if (options.callerOnState) { caller.removeClass(options.callerOnState); };
if (container.is('.fg-menu-ipod')) { menu.resetDrilldownMenu(); };
if (container.is('.fg-menu-flyout')) { menu.resetFlyoutMenu(); };
container.parent().hide();
menu.menuOpen = false;
$(document).unbind('click', killAllMenus);
$(document).unbind('keydown');
};
this.showLoading = function(){
caller.addClass(options.loadingState);
};
this.showMenu = function(){
killAllMenus();
if (!menu.menuExists) { menu.create() };
caller
.addClass('fg-menu-open')
.addClass(options.callerOnState);
container.parent().show().click(function(){ menu.kill(); return false; });
container.hide().slideDown(options.showSpeed).find('.fg-menu:eq(0)');
menu.menuOpen = true;
caller.removeClass(options.loadingState);
$(document).click(killAllMenus);
// assign key events
$(document).keydown(function(event){
var e;
if (event.which !="") { e = event.which; }
else if (event.charCode != "") { e = event.charCode; }
else if (event.keyCode != "") { e = event.keyCode; }
var menuType = ($(event.target).parents('div').is('.fg-menu-flyout')) ? 'flyout' : 'ipod' ;
switch(e) {
case 37: // left arrow
if (menuType == 'flyout') {
$(event.target).trigger('mouseout');
if ($('.'+options.flyOutOnState).size() > 0) { $('.'+options.flyOutOnState).trigger('mouseover'); };
};
if (menuType == 'ipod') {
$(event.target).trigger('mouseout');
if ($('.fg-menu-footer').find('a').size() > 0) { $('.fg-menu-footer').find('a').trigger('click'); };
if ($('.fg-menu-header').find('a').size() > 0) { $('.fg-menu-current-crumb').prev().find('a').trigger('click'); };
if ($('.fg-menu-current').prev().is('.fg-menu-indicator')) {
$('.fg-menu-current').prev().trigger('mouseover');
};
};
return false;
break;
case 38: // up arrow
if ($(event.target).is('.' + options.linkHover)) {
var prevLink = $(event.target).parent().prev().find('a:eq(0)');
if (prevLink.size() > 0) {
$(event.target).trigger('mouseout');
prevLink.trigger('mouseover');
};
}
else { container.find('a:eq(0)').trigger('mouseover'); }
return false;
break;
case 39: // right arrow
if ($(event.target).is('.fg-menu-indicator')) {
if (menuType == 'flyout') {
$(event.target).next().find('a:eq(0)').trigger('mouseover');
}
else if (menuType == 'ipod') {
$(event.target).trigger('click');
setTimeout(function(){
$(event.target).next().find('a:eq(0)').trigger('mouseover');
}, options.crossSpeed);
};
};
return false;
break;
case 40: // down arrow
if ($(event.target).is('.' + options.linkHover)) {
var nextLink = $(event.target).parent().next().find('a:eq(0)');
if (nextLink.size() > 0) {
$(event.target).trigger('mouseout');
nextLink.trigger('mouseover');
};
}
else { container.find('a:eq(0)').trigger('mouseover'); }
return false;
break;
case 27: // escape
killAllMenus();
break;
case 13: // enter
if ($(event.target).is('.fg-menu-indicator') && menuType == 'ipod') {
$(event.target).trigger('click');
setTimeout(function(){
$(event.target).next().find('a:eq(0)').trigger('mouseover');
}, options.crossSpeed);
};
break;
};
});
};
this.create = function(){
container.css({ width: options.width }).appendTo('body').find('ul:first').not('.fg-menu-breadcrumb').addClass('fg-menu');
container.find('ul, li a').addClass('ui-corner-all');
// aria roles & attributes
container.find('ul').attr('role', 'menu').eq(0).attr('aria-activedescendant','active-menuitem').attr('aria-labelledby', caller.attr('id'));
container.find('li').attr('role', 'menuitem');
container.find('li:has(ul)').attr('aria-haspopup', 'true').find('ul').attr('aria-expanded', 'false');
container.find('a').attr('tabindex', '-1');
// when there are multiple levels of hierarchy, create flyout or drilldown menu
if (container.find('ul').size() > 1) {
if (options.flyOut) { menu.flyout(container, options); }
else { menu.drilldown(container, options); }
}
else {
container.find('a').click(function(){
menu.chooseItem(this);
return false;
});
};
if (options.linkHover) {
var allLinks = container.find('.fg-menu li a');
allLinks.hover(
function(){
var menuitem = $(this);
$('.'+options.linkHover).removeClass(options.linkHover).blur().parent().removeAttr('id');
$(this).addClass(options.linkHover).focus().parent().attr('id','active-menuitem');
},
function(){
$(this).removeClass(options.linkHover).blur().parent().removeAttr('id');
}
);
};
if (options.linkHoverSecondary) {
container.find('.fg-menu li').hover(
function(){
$(this).siblings('li').removeClass(options.linkHoverSecondary);
if (options.flyOutOnState) { $(this).siblings('li').find('a').removeClass(options.flyOutOnState); }
$(this).addClass(options.linkHoverSecondary);
},
function(){ $(this).removeClass(options.linkHoverSecondary); }
);
};
menu.setPosition(container, caller, options);
menu.menuExists = true;
};
this.chooseItem = function(item){
menu.kill();
// edit this for your own custom function/callback:
$('#menuSelection').text($(item).text());
// location.href = $(item).attr('href');
};
};
Menu.prototype.flyout = function(container, options) {
var menu = this;
this.resetFlyoutMenu = function(){
var allLists = container.find('ul ul');
allLists.removeClass('ui-widget-content').hide();
};
container.addClass('fg-menu-flyout').find('li:has(ul)').each(function(){
var linkWidth = container.width();
var showTimer, hideTimer;
var allSubLists = $(this).find('ul');
allSubLists.css({ left: linkWidth, width: linkWidth }).hide();
$(this).find('a:eq(0)').addClass('fg-menu-indicator').html('<span>' + $(this).find('a:eq(0)').text() + '</span><span class="ui-icon '+options.nextMenuLink+'"></span>').hover(
function(){
clearTimeout(hideTimer);
var subList = $(this).next();
if (!fitVertical(subList, $(this).offset().top)) { subList.css({ top: 'auto', bottom: 0 }); };
if (!fitHorizontal(subList, $(this).offset().left + 100)) { subList.css({ left: 'auto', right: linkWidth, 'z-index': 999 }); };
showTimer = setTimeout(function(){
subList.addClass('ui-widget-content').show(options.showSpeed).attr('aria-expanded', 'true');
}, 300);
},
function(){
clearTimeout(showTimer);
var subList = $(this).next();
hideTimer = setTimeout(function(){
subList.removeClass('ui-widget-content').hide(options.showSpeed).attr('aria-expanded', 'false');
}, 400);
}
);
$(this).find('ul a').hover(
function(){
clearTimeout(hideTimer);
if ($(this).parents('ul').prev().is('a.fg-menu-indicator')) {
$(this).parents('ul').prev().addClass(options.flyOutOnState);
}
},
function(){
hideTimer = setTimeout(function(){
allSubLists.hide(options.showSpeed);
container.find(options.flyOutOnState).removeClass(options.flyOutOnState);
}, 500);
}
);
});
// Command By Beemaraj.V
/* container.find('a').click(function(){
menu.chooseItem(this);
return false;
}); */
// Add By Beemaraj.V
container.find('a').click(function()
{
if($(this).is('.fg-menu-indicator'))
$(this).trigger('mouseover');
else
menu.chooseItem(this);
return false;
});
};
Menu.prototype.drilldown = function(container, options) {
var menu = this;
var topList = container.find('.fg-menu');
var breadcrumb = $('<ul class="fg-menu-breadcrumb ui-widget-header ui-corner-all ui-helper-clearfix"></ul>');
var crumbDefaultHeader = $('<li class="fg-menu-breadcrumb-text">'+options.crumbDefaultText+'</li>');
var firstCrumbText = (options.backLink) ? options.backLinkText : options.topLinkText;
var firstCrumbClass = (options.backLink) ? 'fg-menu-prev-list' : 'fg-menu-all-lists';
var firstCrumbLinkClass = (options.backLink) ? 'ui-state-default ui-corner-all' : '';
var firstCrumbIcon = (options.backLink) ? '<span class="ui-icon ui-icon-triangle-1-w"></span>' : '';
var firstCrumb = $('<li class="'+firstCrumbClass+'"><a href="#" class="'+firstCrumbLinkClass+'">'+firstCrumbIcon+firstCrumbText+'</a></li>');
container.addClass('fg-menu-ipod');
if (options.backLink) { breadcrumb.addClass('fg-menu-footer').appendTo(container).hide(); }
else { breadcrumb.addClass('fg-menu-header').prependTo(container); };
breadcrumb.append(crumbDefaultHeader);
var checkMenuHeight = function(el){
if (el.height() > options.maxHeight) { el.addClass('fg-menu-scroll') };
el.css({ height: options.maxHeight });
};
var resetChildMenu = function(el){ el.removeClass('fg-menu-scroll').removeClass('fg-menu-current').height('auto'); };
this.resetDrilldownMenu = function(){
$('.fg-menu-current').removeClass('fg-menu-current');
topList.animate({ left: 0 }, options.crossSpeed, function(){
$(this).find('ul').each(function(){
$(this).hide();
resetChildMenu($(this));
});
topList.addClass('fg-menu-current');
});
$('.fg-menu-all-lists').find('span').remove();
breadcrumb.empty().append(crumbDefaultHeader);
$('.fg-menu-footer').empty().hide();
checkMenuHeight(topList);
};
topList
.addClass('fg-menu-content fg-menu-current ui-widget-content ui-helper-clearfix')
.css({ width: container.width() })
.find('ul')
.css({ width: container.width(), left: container.width() })
.addClass('ui-widget-content')
.hide();
checkMenuHeight(topList);
topList.find('a').each(function(){
// if the link opens a child menu:
if ($(this).next().is('ul')) {
$(this)
.addClass('fg-menu-indicator')
.each(function(){ $(this).html('<span>' + $(this).text() + '</span><span class="ui-icon '+options.nextMenuLink+'"></span>'); })
.click(function(){ // ----- show the next menu
var nextList = $(this).next();
var parentUl = $(this).parents('ul:eq(0)');
var parentLeft = (parentUl.is('.fg-menu-content')) ? 0 : parseFloat(topList.css('left'));
var nextLeftVal = Math.round(parentLeft - parseFloat(container.width()));
var footer = $('.fg-menu-footer');
// show next menu
resetChildMenu(parentUl);
checkMenuHeight(nextList);
topList.animate({ left: nextLeftVal }, options.crossSpeed);
nextList.show().addClass('fg-menu-current').attr('aria-expanded', 'true');
var setPrevMenu = function(backlink){
var b = backlink;
var c = $('.fg-menu-current');
var prevList = c.parents('ul:eq(0)');
c.hide().attr('aria-expanded', 'false');
resetChildMenu(c);
checkMenuHeight(prevList);
prevList.addClass('fg-menu-current').attr('aria-expanded', 'true');
if (prevList.hasClass('fg-menu-content')) { b.remove(); footer.hide(); };
};
// initialize "back" link
if (options.backLink) {
if (footer.find('a').size() == 0) {
footer.show();
$('<a href="#"><span class="ui-icon ui-icon-triangle-1-w"></span> <span>Back</span></a>')
.appendTo(footer)
.click(function(){ // ----- show the previous menu
var b = $(this);
var prevLeftVal = parseFloat(topList.css('left')) + container.width();
topList.animate({ left: prevLeftVal }, options.crossSpeed, function(){
setPrevMenu(b);
});
return false;
});
}
}
// or initialize top breadcrumb
else {
if (breadcrumb.find('li').size() == 1){
breadcrumb.empty().append(firstCrumb);
firstCrumb.find('a').click(function(){
menu.resetDrilldownMenu();
return false;
});
}
$('.fg-menu-current-crumb').removeClass('fg-menu-current-crumb');
var crumbText = $(this).find('span:eq(0)').text();
var newCrumb = $('<li class="fg-menu-current-crumb"><a href="javascript://" class="fg-menu-crumb">'+crumbText+'</a></li>');
newCrumb
.appendTo(breadcrumb)
.find('a').click(function(){
if ($(this).parent().is('.fg-menu-current-crumb')){
menu.chooseItem(this);
}
else {
var newLeftVal = - ($('.fg-menu-current').parents('ul').size() - 1) * 180;
topList.animate({ left: newLeftVal }, options.crossSpeed, function(){
setPrevMenu();
});
// make this the current crumb, delete all breadcrumbs after this one, and navigate to the relevant menu
$(this).parent().addClass('fg-menu-current-crumb').find('span').remove();
$(this).parent().nextAll().remove();
};
return false;
});
newCrumb.prev().append(' <span class="ui-icon '+options.nextCrumbLink+'"></span>');
};
return false;
});
}
// if the link is a leaf node (doesn't open a child menu)
else {
$(this).click(function(){
menu.chooseItem(this);
return false;
});
};
});
};
/* Menu.prototype.setPosition parameters (defaults noted with *):
referrer = the link (or other element) used to show the overlaid object
settings = can override the defaults:
- posX/Y: where the top left corner of the object should be positioned in relation to its referrer.
X: left*, center, right
Y: top, center, bottom*
- offsetX/Y: the number of pixels to be offset from the x or y position. Can be a positive or negative number.
- directionH/V: where the entire menu should appear in relation to its referrer.
Horizontal: left*, right
Vertical: up, down*
- detectH/V: detect the viewport horizontally / vertically
- linkToFront: copy the menu link and place it on top of the menu (visual effect to make it look like it overlaps the object) */
Menu.prototype.setPosition = function(widget, caller, options) {
var el = widget;
var referrer = caller;
var dims = {
refX: referrer.offset().left,
refY: referrer.offset().top,
refW: referrer.getTotalWidth(),
refH: referrer.getTotalHeight()
};
var options = options;
var xVal, yVal;
var helper = $('<div class="positionHelper"></div>');
helper.css({ position: 'absolute', left: dims.refX, top: dims.refY, width: dims.refW, height: dims.refH });
el.wrap(helper);
// get X pos
switch(options.positionOpts.posX) {
case 'left': xVal = 0;
break;
case 'center': xVal = dims.refW / 2;
break;
case 'right': xVal = dims.refW;
break;
};
// get Y pos
switch(options.positionOpts.posY) {
case 'top': yVal = 0;
break;
case 'center': yVal = dims.refH / 2;
break;
case 'bottom': yVal = dims.refH;
break;
};
// add the offsets (zero by default)
xVal += options.positionOpts.offsetX;
yVal += options.positionOpts.offsetY;
// position the object vertically
if (options.positionOpts.directionV == 'up') {
el.css({ top: 'auto', bottom: yVal });
if (options.positionOpts.detectV && !fitVertical(el)) {
el.css({ bottom: 'auto', top: yVal });
}
}
else {
el.css({ bottom: 'auto', top: yVal });
if (options.positionOpts.detectV && !fitVertical(el)) {
yVal='auto';
el.css({ top: 'auto', bottom: yVal });
}
};
// and horizontally
if (options.positionOpts.directionH == 'left') {
el.css({ left: 'auto', right: xVal });
if (options.positionOpts.detectH && !fitHorizontal(el)) {
el.css({ right: 'auto', left: xVal });
}
}
else {
el.css({ right: 'auto', left: xVal });
if (options.positionOpts.detectH && !fitHorizontal(el)) {
el.css({ left: 'auto', right: xVal });
}
};
// if specified, clone the referring element and position it so that it appears on top of the menu
if (options.positionOpts.linkToFront) {
referrer.clone().addClass('linkClone').css({
position: 'absolute',
top: 0,
right: 'auto',
bottom: 'auto',
left: 0,
width: referrer.width(),
height: referrer.height()
}).insertAfter(el);
};
};
/* Utilities to sort and find viewport dimensions */
function sortBigToSmall(a, b) { return b - a; };
jQuery.fn.getTotalWidth = function(){
return $(this).width() + parseInt($(this).css('paddingRight')) + parseInt($(this).css('paddingLeft')) + parseInt($(this).css('borderRightWidth')) + parseInt($(this).css('borderLeftWidth'));
};
jQuery.fn.getTotalHeight = function(){
return $(this).height() + parseInt($(this).css('paddingTop')) + parseInt($(this).css('paddingBottom')) + parseInt($(this).css('borderTopWidth')) + parseInt($(this).css('borderBottomWidth'));
};
function getScrollTop(){
return self.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;
};
function getScrollLeft(){
return self.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft;
};
function getWindowHeight(){
var de = document.documentElement;
return self.innerHeight || (de && de.clientHeight) || document.body.clientHeight;
};
function getWindowWidth(){
var de = document.documentElement;
return self.innerWidth || (de && de.clientWidth) || document.body.clientWidth;
};
/* Utilities to test whether an element will fit in the viewport
Parameters:
el = element to position, required
leftOffset / topOffset = optional parameter if the offset cannot be calculated (i.e., if the object is in the DOM but is set to display: 'none') */
function fitHorizontal(el, leftOffset){
var leftVal = parseInt(leftOffset) || $(el).offset().left;
return (leftVal + $(el).width() <= getWindowWidth()-100 + getScrollLeft() && leftVal - getScrollLeft() >= 0);
};
function fitVertical(el, topOffset){
var topVal = parseInt(topOffset) || $(el).offset().top;
return (topVal + $(el).height() <= getWindowHeight() + getScrollTop() && topVal - getScrollTop() >= 0);
};
/*--------------------------------------------------------------------
* javascript method: "pxToEm"
* by:
Scott Jehl (scott@filamentgroup.com)
Maggie Wachs (maggie@filamentgroup.com)
http://www.filamentgroup.com
*
* Copyright (c) 2008 Filament Group
* Dual licensed under the MIT (filamentgroup.com/examples/mit-license.txt) and GPL (filamentgroup.com/examples/gpl-license.txt) licenses.
*
* Description: Extends the native Number and String objects with pxToEm method. pxToEm converts a pixel value to ems depending on inherited font size.
* Article: http://www.filamentgroup.com/lab/retaining_scalable_interfaces_with_pixel_to_em_conversion/
* Demo: http://www.filamentgroup.com/examples/pxToEm/
*
* Options:
scope: string or jQuery selector for font-size scoping
reverse: Boolean, true reverses the conversion to em-px
* Dependencies: jQuery library
* Usage Example: myPixelValue.pxToEm(); or myPixelValue.pxToEm({'scope':'#navigation', reverse: true});
*
* Version: 2.0, 08.01.2008
* Changelog:
* 08.02.2007 initial Version 1.0
* 08.01.2008 - fixed font-size calculation for IE
--------------------------------------------------------------------*/
Number.prototype.pxToEm = String.prototype.pxToEm = function(settings){
//set defaults
settings = jQuery.extend({
scope: 'body',
reverse: false
}, settings);
var pxVal = (this == '') ? 0 : parseFloat(this);
var scopeVal;
var getWindowWidth = function(){
var de = document.documentElement;
return self.innerWidth || (de && de.clientWidth) || document.body.clientWidth;
};
/* When a percentage-based font-size is set on the body, IE returns that percent of the window width as the font-size.
For example, if the body font-size is 62.5% and the window width is 1000px, IE will return 625px as the font-size.
When this happens, we calculate the correct body font-size (%) and multiply it by 16 (the standard browser font size)
to get an accurate em value. */
if (settings.scope == 'body' && $.browser.msie && (parseFloat($('body').css('font-size')) / getWindowWidth()).toFixed(1) > 0.0) {
var calcFontSize = function(){
return (parseFloat($('body').css('font-size'))/getWindowWidth()).toFixed(3) * 16;
};
scopeVal = calcFontSize();
}
else { scopeVal = parseFloat(jQuery(settings.scope).css("font-size")); };
var result = (settings.reverse == true) ? (pxVal * scopeVal).toFixed(2) + 'px' : (pxVal / scopeVal).toFixed(2) + 'em';
return result;
};
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