/*
* # Semantic - Dropdown
* http://github.com/jlukic/semantic-ui/
*
*
* Copyright 2013 Contributors
* Released under the MIT license
* http://opensource.org/licenses/MIT
*
*/
;(function ( $, window, document, undefined ) {
$.fn.dropdown = function(parameters) {
var
$allModules = $(this),
$document = $(document),
moduleSelector = $allModules.selector || '',
hasTouch = ('ontouchstart' in document.documentElement),
time = new Date().getTime(),
performance = [],
query = arguments[0],
methodInvoked = (typeof query == 'string'),
queryArguments = [].slice.call(arguments, 1),
invokedResponse
;
$allModules
.each(function() {
var
settings = ( $.isPlainObject(parameters) )
? $.extend(true, {}, $.fn.dropdown.settings, parameters)
: $.extend({}, $.fn.dropdown.settings),
className = settings.className,
metadata = settings.metadata,
namespace = settings.namespace,
selector = settings.selector,
error = settings.error,
eventNamespace = '.' + namespace,
moduleNamespace = 'module-' + namespace,
$module = $(this),
$item = $module.find(selector.item),
$text = $module.find(selector.text),
$input = $module.find(selector.input),
$menu = $module.children(selector.menu),
element = this,
instance = $module.data(moduleNamespace),
module
;
module = {
initialize: function() {
module.debug('Initializing dropdown', settings);
module.set.selected();
// no use detecting mouse events because touch devices emulate them
if(hasTouch) {
module.bind.touchEvents();
}
module.bind.mouseEvents();
$document
.one('mousemove' + eventNamespace, module.set.hasMouse)
;
module.instantiate();
},
instantiate: function() {
module.verbose('Storing instance of dropdown', module);
instance = module;
$module
.data(moduleNamespace, module)
;
},
destroy: function() {
module.verbose('Destroying previous dropdown for', $module);
$item
.off(eventNamespace)
;
$module
.off(eventNamespace)
.removeData(moduleNamespace)
;
},
bind: {
touchEvents: function() {
module.debug('Touch device detected binding touch events');
$module
.on('touchstart' + eventNamespace, module.event.test.toggle)
;
$item
.on('touchstart' + eventNamespace, module.event.item.mouseenter)
.on('touchstart' + eventNamespace, module.event.item.click)
;
},
mouseEvents: function() {
module.verbose('Mouse detected binding mouse events');
if(settings.on == 'click') {
$module
.on('click' + eventNamespace, module.event.test.toggle)
;
}
else if(settings.on == 'hover') {
$module
.on('mouseenter' + eventNamespace, module.delay.show)
.on('mouseleave' + eventNamespace, module.delay.hide)
;
}
else {
$module
.on(settings.on + eventNamespace, module.toggle)
;
}
$item
.on('mouseenter' + eventNamespace, module.event.item.mouseenter)
.on('mouseleave' + eventNamespace, module.event.item.mouseleave)
.on('click' + eventNamespace, module.event.item.click)
;
},
intent: function() {
module.verbose('Binding hide intent event to document');
if(hasTouch) {
$document
.on('touchstart' + eventNamespace, module.event.test.touch)
.on('touchmove' + eventNamespace, module.event.test.touch)
;
}
$document
.on('click' + eventNamespace, module.event.test.hide)
;
}
},
unbind: {
intent: function() {
module.verbose('Removing hide intent event from document');
if(hasTouch) {
$document
.off('touchstart' + eventNamespace)
;
}
$document
.off('click' + eventNamespace)
;
}
},
event: {
test: {
toggle: function(event) {
module.determine.intent(event, module.toggle);
event.preventDefault();
event.stopImmediatePropagation();
},
touch: function(event) {
module.determine.intent(event, function() {
if(event.type == 'touchstart') {
module.timer = setTimeout(module.hide, 50);
}
else if(event.type == 'touchmove') {
clearTimeout(module.timer);
}
});
event.stopPropagation();
},
hide: function(event) {
module.determine.intent(event, module.hide);
event.stopPropagation();
}
},
item: {
mouseenter: function(event) {
var
$currentMenu = $(this).find(selector.menu),
$otherMenus = $(this).siblings(selector.item).children(selector.menu)
;
if( $currentMenu.size() > 0 ) {
clearTimeout(module.itemTimer);
module.itemTimer = setTimeout(function() {
module.animate.hide(false, $otherMenus);
module.verbose('Showing sub-menu', $currentMenu);
module.animate.show(false, $currentMenu);
}, settings.delay.show * 2);
event.preventDefault();
}
},
mouseleave: function(event) {
var
$currentMenu = $(this).find(selector.menu)
;
if($currentMenu.size() > 0) {
clearTimeout(module.itemTimer);
module.itemTimer = setTimeout(function() {
module.verbose('Hiding sub-menu', $currentMenu);
module.animate.hide(false, $currentMenu);
}, settings.delay.hide);
}
},
click: function (event) {
var
$choice = $(this),
text = $choice.data(metadata.text) || $choice.text(),
value = $choice.data(metadata.value) || text.toLowerCase()
;
if( $choice.find(selector.menu).size() === 0 ) {
module.determine.selectAction(text, value);
$.proxy(settings.onChange, element)(value, text);
}
}
},
resetStyle: function() {
$(this).removeAttr('style');
}
},
determine: {
selectAction: function(text, value) {
module.verbose('Determining action', settings.action);
if( $.isFunction( module.action[settings.action] ) ) {
module.verbose('Triggering preset action', settings.action, text, value);
module.action[ settings.action ](text, value);
}
else if( $.isFunction(settings.action) ) {
module.verbose('Triggering user action', settings.action, text, value);
settings.action(text, value);
}
else {
module.error(error.action);
}
},
intent: function(event, callback) {
module.debug('Determining whether event occurred in dropdown', event.target);
callback = callback || function(){};
if( $(event.target).closest($menu).size() === 0 ) {
module.verbose('Triggering event', callback);
callback();
}
else {
module.verbose('Event occurred in dropdown, canceling callback');
}
}
},
action: {
nothing: function() {},
hide: function() {
module.hide();
},
activate: function(text, value) {
value = value || text;
module.set.selected(value);
module.set.value(value);
module.hide();
},
/* Deprecated */
auto: function(text, value) {
value = value || text;
module.set.selected(value);
module.set.value(value);
module.hide();
},
/* Deprecated */
changeText: function(text, value) {
value = value || text;
module.set.selected(value);
module.hide();
},
/* Deprecated */
updateForm: function(text, value) {
value = value || text;
module.set.selected(value);
module.set.value(value);
module.hide();
}
},
get: {
text: function() {
return $text.text();
},
value: function() {
return $input.val();
},
item: function(value) {
var
$selectedItem
;
value = value || module.get.value() || module.get.text();
if(value) {
$item
.each(function() {
var
$choice = $(this),
optionText = $choice.data(metadata.text) || $choice.text(),
optionValue = $choice.data(metadata.value) || optionText.toLowerCase()
;
if( optionValue == value || optionText == value ) {
$selectedItem = $(this);
return false;
}
})
;
}
else {
value = module.get.text();
}
return $selectedItem || false;
}
},
set: {
text: function(text) {
module.debug('Changing text', text, $text);
$text.removeClass(className.placeholder);
$text.text(text);
},
value: function(value) {
module.debug('Adding selected value to hidden input', value, $input);
$input.val(value);
},
active: function() {
$module.addClass(className.active);
},
visible: function() {
$module.addClass(className.visible);
},
selected: function(value) {
var
$selectedItem = module.get.item(value),
selectedText
;
if($selectedItem) {
module.debug('Setting selected menu item to', $selectedItem);
selectedText = $selectedItem.data(metadata.text) || $selectedItem.text();
$item
.removeClass(className.active)
;
$selectedItem
.addClass(className.active)
;
module.set.text(selectedText);
}
}
},
remove: {
active: function() {
$module.removeClass(className.active);
},
visible: function() {
$module.removeClass(className.visible);
}
},
is: {
selection: function() {
return $module.hasClass(className.selection);
},
visible: function($subMenu) {
return ($subMenu)
? $subMenu.is(':animated, :visible')
: $menu.is(':animated, :visible')
;
},
hidden: function($subMenu) {
return ($subMenu)
? $subMenu.is(':not(:animated, :visible)')
: $menu.is(':not(:animated, :visible)')
;
}
},
can: {
click: function() {
return (hasTouch || settings.on == 'click');
},
show: function() {
return !$module.hasClass(className.disabled);
}
},
animate: {
show: function(callback, $subMenu) {
var
$currentMenu = $subMenu || $menu
;
callback = callback || function(){};
if( module.is.hidden($currentMenu) ) {
module.verbose('Doing menu show animation', $currentMenu);
if(settings.transition == 'none') {
callback();
}
else if($.fn.transition !== undefined) {
$currentMenu.transition({
animation : settings.transition + ' in',
duration : settings.duration,
complete : callback,
queue : false
});
}
else if(settings.transition == 'slide down') {
$currentMenu
.hide()
.clearQueue()
.children()
.clearQueue()
.css('opacity', 0)
.delay(50)
.animate({
opacity : 1
}, settings.duration, 'easeOutQuad', module.event.resetStyle)
.end()
.slideDown(100, 'easeOutQuad', function() {
$.proxy(module.event.resetStyle, this)();
callback();
})
;
}
else if(settings.transition == 'fade') {
$currentMenu
.hide()
.clearQueue()
.fadeIn(settings.duration, function() {
$.proxy(module.event.resetStyle, this)();
callback();
})
;
}
else {
module.error(error.transition);
}
}
},
hide: function(callback, $subMenu) {
var
$currentMenu = $subMenu || $menu
;
callback = callback || function(){};
if(module.is.visible($currentMenu) ) {
module.verbose('Doing menu hide animation', $currentMenu);
if($.fn.transition !== undefined) {
$currentMenu.transition({
animation : settings.transition + ' out',
duration : settings.duration,
complete : callback,
queue : false
});
}
else if(settings.transition == 'none') {
callback();
}
else if(settings.transition == 'slide down') {
$currentMenu
.show()
.clearQueue()
.children()
.clearQueue()
.css('opacity', 1)
.animate({
opacity : 0
}, 100, 'easeOutQuad', module.event.resetStyle)
.end()
.delay(50)
.slideUp(100, 'easeOutQuad', function() {
$.proxy(module.event.resetStyle, this)();
callback();
})
;
}
else if(settings.transition == 'fade') {
$currentMenu
.show()
.clearQueue()
.fadeOut(150, function() {
$.proxy(module.event.resetStyle, this)();
callback();
})
;
}
else {
module.error(error.transition);
}
}
}
},
show: function() {
module.debug('Checking if dropdown can show');
if( module.is.hidden() ) {
module.hideOthers();
module.set.active();
module.animate.show(module.set.visible);
if( module.can.click() ) {
module.bind.intent();
}
$.proxy(settings.onShow, element)();
}
},
hide: function() {
if( module.is.visible() ) {
module.debug('Hiding dropdown');
if( module.can.click() ) {
module.unbind.intent();
}
module.remove.active();
module.animate.hide(module.remove.visible);
$.proxy(settings.onHide, element)();
}
},
delay: {
show: function() {
module.verbose('Delaying show event to ensure user intent');
clearTimeout(module.timer);
module.timer = setTimeout(module.show, settings.delay.show);
},
hide: function() {
module.verbose('Delaying hide event to ensure user intent');
clearTimeout(module.timer);
module.timer = setTimeout(module.hide, settings.delay.hide);
}
},
hideOthers: function() {
module.verbose('Finding other dropdowns to hide');
$allModules
.not($module)
.has(selector.menu + ':visible')
.dropdown('hide')
;
},
toggle: function() {
module.verbose('Toggling menu visibility');
if( module.is.hidden() ) {
module.show();
}
else {
module.hide();
}
},
setting: function(name, value) {
if(value !== undefined) {
if( $.isPlainObject(name) ) {
$.extend(true, settings, name);
}
else {
settings[name] = value;
}
}
else {
return settings[name];
}
},
internal: function(name, value) {
if(value !== undefined) {
if( $.isPlainObject(name) ) {
$.extend(true, module, name);
}
else {
module[name] = value;
}
}
else {
return module[name];
}
},
debug: function() {
if(settings.debug) {
if(settings.performance) {
module.performance.log(arguments);
}
else {
module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':');
module.debug.apply(console, arguments);
}
}
},
verbose: function() {
if(settings.verbose && settings.debug) {
if(settings.performance) {
module.performance.log(arguments);
}
else {
module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':');
module.verbose.apply(console, arguments);
}
}
},
error: function() {
module.error = Function.prototype.bind.call(console.error, console, settings.name + ':');
module.error.apply(console, arguments);
},
performance: {
log: function(message) {
var
currentTime,
executionTime,
previousTime
;
if(settings.performance) {
currentTime = new Date().getTime();
previousTime = time || currentTime;
executionTime = currentTime - previousTime;
time = currentTime;
performance.push({
'Element' : element,
'Name' : message[0],
'Arguments' : [].slice.call(message, 1) || '',
'Execution Time' : executionTime
});
}
clearTimeout(module.performance.timer);
module.performance.timer = setTimeout(module.performance.display, 100);
},
display: function() {
var
title = settings.name + ':',
totalTime = 0
;
time = false;
clearTimeout(module.performance.timer);
$.each(performance, function(index, data) {
totalTime += data['Execution Time'];
});
title += ' ' + totalTime + 'ms';
if(moduleSelector) {
title += ' \'' + moduleSelector + '\'';
}
if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
console.groupCollapsed(title);
if(console.table) {
console.table(performance);
}
else {
$.each(performance, function(index, data) {
console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
});
}
console.groupEnd();
}
performance = [];
}
},
invoke: function(query, passedArguments, context) {
var
maxDepth,
found,
response
;
passedArguments = passedArguments || queryArguments;
context = element || context;
if(typeof query == 'string' && instance !== undefined) {
query = query.split(/[\. ]/);
maxDepth = query.length - 1;
$.each(query, function(depth, value) {
var camelCaseValue = (depth != maxDepth)
? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
: query
;
if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
instance = instance[value];
}
else if( $.isPlainObject( instance[camelCaseValue] ) && (depth != maxDepth) ) {
instance = instance[camelCaseValue];
}
else if( instance[value] !== undefined ) {
found = instance[value];
return false;
}
else if( instance[camelCaseValue] !== undefined ) {
found = instance[camelCaseValue];
return false;
}
else {
module.error(error.method);
return false;
}
});
}
if ( $.isFunction( found ) ) {
response = found.apply(context, passedArguments);
}
else if(found !== undefined) {
response = found;
}
if($.isArray(invokedResponse)) {
invokedResponse.push(response);
}
else if(typeof invokedResponse == 'string') {
invokedResponse = [invokedResponse, response];
}
else if(response !== undefined) {
invokedResponse = response;
}
return found;
}
};
if(methodInvoked) {
if(instance === undefined) {
module.initialize();
}
module.invoke(query);
}
else {
if(instance !== undefined) {
module.destroy();
}
module.initialize();
}
})
;
return (invokedResponse)
? invokedResponse
: this
;
};
$.fn.dropdown.settings = {
name : 'Dropdown',
namespace : 'dropdown',
verbose : true,
debug : true,
performance : true,
on : 'click',
action : 'activate',
delay: {
show: 200,
hide: 300
},
transition : 'slide down',
duration : 250,
onChange : function(){},
onShow : function(){},
onHide : function(){},
error : {
action : 'You called a dropdown action that was not defined',
method : 'The method you called is not defined.',
transition : 'The requested transition was not found'
},
metadata: {
text : 'text',
value : 'value'
},
selector : {
menu : '.menu',
item : '.menu > .item',
text : '> .text',
input : '> input[type="hidden"]'
},
className : {
active : 'active',
placeholder : 'default',
disabled : 'disabled',
visible : 'visible',
selection : 'selection'
}
};
})( jQuery, window , document );