http://git-wip-us.apache.org/repos/asf/incubator-senssoft/blob/855d3ab1/semantic/dist/components/dropdown.js ---------------------------------------------------------------------- diff --git a/semantic/dist/components/dropdown.js b/semantic/dist/components/dropdown.js new file mode 100644 index 0000000..9c0983c --- /dev/null +++ b/semantic/dist/components/dropdown.js @@ -0,0 +1,3741 @@ +/*! + * # Semantic UI 2.2.6 - Dropdown + * http://github.com/semantic-org/semantic-ui/ + * + * + * Released under the MIT license + * http://opensource.org/licenses/MIT + * + */ + +;(function ($, window, document, undefined) { + +"use strict"; + +window = (typeof window != 'undefined' && window.Math == Math) + ? window + : (typeof self != 'undefined' && self.Math == Math) + ? self + : Function('return this')() +; + +$.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), + returnedValue + ; + + $allModules + .each(function(elementIndex) { + var + settings = ( $.isPlainObject(parameters) ) + ? $.extend(true, {}, $.fn.dropdown.settings, parameters) + : $.extend({}, $.fn.dropdown.settings), + + className = settings.className, + message = settings.message, + fields = settings.fields, + keys = settings.keys, + metadata = settings.metadata, + namespace = settings.namespace, + regExp = settings.regExp, + selector = settings.selector, + error = settings.error, + templates = settings.templates, + + eventNamespace = '.' + namespace, + moduleNamespace = 'module-' + namespace, + + $module = $(this), + $context = $(settings.context), + $text = $module.find(selector.text), + $search = $module.find(selector.search), + $sizer = $module.find(selector.sizer), + $input = $module.find(selector.input), + $icon = $module.find(selector.icon), + + $combo = ($module.prev().find(selector.text).length > 0) + ? $module.prev().find(selector.text) + : $module.prev(), + + $menu = $module.children(selector.menu), + $item = $menu.find(selector.item), + + activated = false, + itemActivated = false, + internalChange = false, + element = this, + instance = $module.data(moduleNamespace), + + initialLoad, + pageLostFocus, + willRefocus, + elementNamespace, + id, + selectObserver, + menuObserver, + module + ; + + module = { + + initialize: function() { + module.debug('Initializing dropdown', settings); + + if( module.is.alreadySetup() ) { + module.setup.reference(); + } + else { + module.setup.layout(); + module.refreshData(); + + module.save.defaults(); + module.restore.selected(); + + module.create.id(); + module.bind.events(); + + module.observeChanges(); + module.instantiate(); + } + + }, + + instantiate: function() { + module.verbose('Storing instance of dropdown', module); + instance = module; + $module + .data(moduleNamespace, module) + ; + }, + + destroy: function() { + module.verbose('Destroying previous dropdown', $module); + module.remove.tabbable(); + $module + .off(eventNamespace) + .removeData(moduleNamespace) + ; + $menu + .off(eventNamespace) + ; + $document + .off(elementNamespace) + ; + module.disconnect.menuObserver(); + module.disconnect.selectObserver(); + }, + + observeChanges: function() { + if('MutationObserver' in window) { + selectObserver = new MutationObserver(module.event.select.mutation); + menuObserver = new MutationObserver(module.event.menu.mutation); + module.debug('Setting up mutation observer', selectObserver, menuObserver); + module.observe.select(); + module.observe.menu(); + } + }, + + disconnect: { + menuObserver: function() { + if(menuObserver) { + menuObserver.disconnect(); + } + }, + selectObserver: function() { + if(selectObserver) { + selectObserver.disconnect(); + } + } + }, + observe: { + select: function() { + if(module.has.input()) { + selectObserver.observe($input[0], { + childList : true, + subtree : true + }); + } + }, + menu: function() { + if(module.has.menu()) { + menuObserver.observe($menu[0], { + childList : true, + subtree : true + }); + } + } + }, + + create: { + id: function() { + id = (Math.random().toString(16) + '000000000').substr(2, 8); + elementNamespace = '.' + id; + module.verbose('Creating unique id for element', id); + }, + userChoice: function(values) { + var + $userChoices, + $userChoice, + isUserValue, + html + ; + values = values || module.get.userValues(); + if(!values) { + return false; + } + values = $.isArray(values) + ? values + : [values] + ; + $.each(values, function(index, value) { + if(module.get.item(value) === false) { + html = settings.templates.addition( module.add.variables(message.addResult, value) ); + $userChoice = $('<div />') + .html(html) + .attr('data-' + metadata.value, value) + .attr('data-' + metadata.text, value) + .addClass(className.addition) + .addClass(className.item) + ; + if(settings.hideAdditions) { + $userChoice.addClass(className.hidden); + } + $userChoices = ($userChoices === undefined) + ? $userChoice + : $userChoices.add($userChoice) + ; + module.verbose('Creating user choices for value', value, $userChoice); + } + }); + return $userChoices; + }, + userLabels: function(value) { + var + userValues = module.get.userValues() + ; + if(userValues) { + module.debug('Adding user labels', userValues); + $.each(userValues, function(index, value) { + module.verbose('Adding custom user value'); + module.add.label(value, value); + }); + } + }, + menu: function() { + $menu = $('<div />') + .addClass(className.menu) + .appendTo($module) + ; + }, + sizer: function() { + $sizer = $('<span />') + .addClass(className.sizer) + .insertAfter($search) + ; + } + }, + + search: function(query) { + query = (query !== undefined) + ? query + : module.get.query() + ; + module.verbose('Searching for query', query); + if(module.has.minCharacters(query)) { + module.filter(query); + } + else { + module.hide(); + } + }, + + select: { + firstUnfiltered: function() { + module.verbose('Selecting first non-filtered element'); + module.remove.selectedItem(); + $item + .not(selector.unselectable) + .not(selector.addition + selector.hidden) + .eq(0) + .addClass(className.selected) + ; + }, + nextAvailable: function($selected) { + $selected = $selected.eq(0); + var + $nextAvailable = $selected.nextAll(selector.item).not(selector.unselectable).eq(0), + $prevAvailable = $selected.prevAll(selector.item).not(selector.unselectable).eq(0), + hasNext = ($nextAvailable.length > 0) + ; + if(hasNext) { + module.verbose('Moving selection to', $nextAvailable); + $nextAvailable.addClass(className.selected); + } + else { + module.verbose('Moving selection to', $prevAvailable); + $prevAvailable.addClass(className.selected); + } + } + }, + + setup: { + api: function() { + var + apiSettings = { + debug : settings.debug, + urlData : { + value : module.get.value(), + query : module.get.query() + }, + on : false + } + ; + module.verbose('First request, initializing API'); + $module + .api(apiSettings) + ; + }, + layout: function() { + if( $module.is('select') ) { + module.setup.select(); + module.setup.returnedObject(); + } + if( !module.has.menu() ) { + module.create.menu(); + } + if( module.is.search() && !module.has.search() ) { + module.verbose('Adding search input'); + $search = $('<input />') + .addClass(className.search) + .prop('autocomplete', 'off') + .insertBefore($text) + ; + } + if( module.is.multiple() && module.is.searchSelection() && !module.has.sizer()) { + module.create.sizer(); + } + if(settings.allowTab) { + module.set.tabbable(); + } + }, + select: function() { + var + selectValues = module.get.selectValues() + ; + module.debug('Dropdown initialized on a select', selectValues); + if( $module.is('select') ) { + $input = $module; + } + // see if select is placed correctly already + if($input.parent(selector.dropdown).length > 0) { + module.debug('UI dropdown already exists. Creating dropdown menu only'); + $module = $input.closest(selector.dropdown); + if( !module.has.menu() ) { + module.create.menu(); + } + $menu = $module.children(selector.menu); + module.setup.menu(selectValues); + } + else { + module.debug('Creating entire dropdown from select'); + $module = $('<div />') + .attr('class', $input.attr('class') ) + .addClass(className.selection) + .addClass(className.dropdown) + .html( templates.dropdown(selectValues) ) + .insertBefore($input) + ; + if($input.hasClass(className.multiple) && $input.prop('multiple') === false) { + module.error(error.missingMultiple); + $input.prop('multiple', true); + } + if($input.is('[multiple]')) { + module.set.multiple(); + } + if ($input.prop('disabled')) { + module.debug('Disabling dropdown'); + $module.addClass(className.disabled); + } + $input + .removeAttr('class') + .detach() + .prependTo($module) + ; + } + module.refresh(); + }, + menu: function(values) { + $menu.html( templates.menu(values, fields)); + $item = $menu.find(selector.item); + }, + reference: function() { + module.debug('Dropdown behavior was called on select, replacing with closest dropdown'); + // replace module reference + $module = $module.parent(selector.dropdown); + module.refresh(); + module.setup.returnedObject(); + // invoke method in context of current instance + if(methodInvoked) { + instance = module; + module.invoke(query); + } + }, + returnedObject: function() { + var + $firstModules = $allModules.slice(0, elementIndex), + $lastModules = $allModules.slice(elementIndex + 1) + ; + // adjust all modules to use correct reference + $allModules = $firstModules.add($module).add($lastModules); + } + }, + + refresh: function() { + module.refreshSelectors(); + module.refreshData(); + }, + + refreshItems: function() { + $item = $menu.find(selector.item); + }, + + refreshSelectors: function() { + module.verbose('Refreshing selector cache'); + $text = $module.find(selector.text); + $search = $module.find(selector.search); + $input = $module.find(selector.input); + $icon = $module.find(selector.icon); + $combo = ($module.prev().find(selector.text).length > 0) + ? $module.prev().find(selector.text) + : $module.prev() + ; + $menu = $module.children(selector.menu); + $item = $menu.find(selector.item); + }, + + refreshData: function() { + module.verbose('Refreshing cached metadata'); + $item + .removeData(metadata.text) + .removeData(metadata.value) + ; + }, + + clearData: function() { + module.verbose('Clearing metadata'); + $item + .removeData(metadata.text) + .removeData(metadata.value) + ; + $module + .removeData(metadata.defaultText) + .removeData(metadata.defaultValue) + .removeData(metadata.placeholderText) + ; + }, + + toggle: function() { + module.verbose('Toggling menu visibility'); + if( !module.is.active() ) { + module.show(); + } + else { + module.hide(); + } + }, + + show: function(callback) { + callback = $.isFunction(callback) + ? callback + : function(){} + ; + if( module.can.show() && !module.is.active() ) { + module.debug('Showing dropdown'); + if(module.has.message() && !(module.has.maxSelections() || module.has.allResultsFiltered()) ) { + module.remove.message(); + } + if(module.is.allFiltered()) { + return true; + } + if(settings.onShow.call(element) !== false) { + module.animate.show(function() { + if( module.can.click() ) { + module.bind.intent(); + } + if(module.has.menuSearch()) { + module.focusSearch(); + } + module.set.visible(); + callback.call(element); + }); + } + } + }, + + hide: function(callback) { + callback = $.isFunction(callback) + ? callback + : function(){} + ; + if( module.is.active() ) { + module.debug('Hiding dropdown'); + if(settings.onHide.call(element) !== false) { + module.animate.hide(function() { + module.remove.visible(); + callback.call(element); + }); + } + } + }, + + hideOthers: function() { + module.verbose('Finding other dropdowns to hide'); + $allModules + .not($module) + .has(selector.menu + '.' + className.visible) + .dropdown('hide') + ; + }, + + hideMenu: function() { + module.verbose('Hiding menu instantaneously'); + module.remove.active(); + module.remove.visible(); + $menu.transition('hide'); + }, + + hideSubMenus: function() { + var + $subMenus = $menu.children(selector.item).find(selector.menu) + ; + module.verbose('Hiding sub menus', $subMenus); + $subMenus.transition('hide'); + }, + + bind: { + events: function() { + if(hasTouch) { + module.bind.touchEvents(); + } + module.bind.keyboardEvents(); + module.bind.inputEvents(); + module.bind.mouseEvents(); + }, + touchEvents: function() { + module.debug('Touch device detected binding additional touch events'); + if( module.is.searchSelection() ) { + // do nothing special yet + } + else if( module.is.single() ) { + $module + .on('touchstart' + eventNamespace, module.event.test.toggle) + ; + } + $menu + .on('touchstart' + eventNamespace, selector.item, module.event.item.mouseenter) + ; + }, + keyboardEvents: function() { + module.verbose('Binding keyboard events'); + $module + .on('keydown' + eventNamespace, module.event.keydown) + ; + if( module.has.search() ) { + $module + .on(module.get.inputEvent() + eventNamespace, selector.search, module.event.input) + ; + } + if( module.is.multiple() ) { + $document + .on('keydown' + elementNamespace, module.event.document.keydown) + ; + } + }, + inputEvents: function() { + module.verbose('Binding input change events'); + $module + .on('change' + eventNamespace, selector.input, module.event.change) + ; + }, + mouseEvents: function() { + module.verbose('Binding mouse events'); + if(module.is.multiple()) { + $module + .on('click' + eventNamespace, selector.label, module.event.label.click) + .on('click' + eventNamespace, selector.remove, module.event.remove.click) + ; + } + if( module.is.searchSelection() ) { + $module + .on('mousedown' + eventNamespace, module.event.mousedown) + .on('mouseup' + eventNamespace, module.event.mouseup) + .on('mousedown' + eventNamespace, selector.menu, module.event.menu.mousedown) + .on('mouseup' + eventNamespace, selector.menu, module.event.menu.mouseup) + .on('click' + eventNamespace, selector.icon, module.event.icon.click) + .on('focus' + eventNamespace, selector.search, module.event.search.focus) + .on('click' + eventNamespace, selector.search, module.event.search.focus) + .on('blur' + eventNamespace, selector.search, module.event.search.blur) + .on('click' + eventNamespace, selector.text, module.event.text.focus) + ; + if(module.is.multiple()) { + $module + .on('click' + eventNamespace, module.event.click) + ; + } + } + else { + if(settings.on == 'click') { + $module + .on('click' + eventNamespace, selector.icon, module.event.icon.click) + .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) + ; + } + $module + .on('mousedown' + eventNamespace, module.event.mousedown) + .on('mouseup' + eventNamespace, module.event.mouseup) + .on('focus' + eventNamespace, module.event.focus) + .on('blur' + eventNamespace, module.event.blur) + ; + } + $menu + .on('mouseenter' + eventNamespace, selector.item, module.event.item.mouseenter) + .on('mouseleave' + eventNamespace, selector.item, module.event.item.mouseleave) + .on('click' + eventNamespace, selector.item, module.event.item.click) + ; + }, + intent: function() { + module.verbose('Binding hide intent event to document'); + if(hasTouch) { + $document + .on('touchstart' + elementNamespace, module.event.test.touch) + .on('touchmove' + elementNamespace, module.event.test.touch) + ; + } + $document + .on('click' + elementNamespace, module.event.test.hide) + ; + } + }, + + unbind: { + intent: function() { + module.verbose('Removing hide intent event from document'); + if(hasTouch) { + $document + .off('touchstart' + elementNamespace) + .off('touchmove' + elementNamespace) + ; + } + $document + .off('click' + elementNamespace) + ; + } + }, + + filter: function(query) { + var + searchTerm = (query !== undefined) + ? query + : module.get.query(), + afterFiltered = function() { + if(module.is.multiple()) { + module.filterActive(); + } + module.select.firstUnfiltered(); + if( module.has.allResultsFiltered() ) { + if( settings.onNoResults.call(element, searchTerm) ) { + if(settings.allowAdditions) { + if(settings.hideAdditions) { + module.verbose('User addition with no menu, setting empty style'); + module.set.empty(); + module.hideMenu(); + } + } + else { + module.verbose('All items filtered, showing message', searchTerm); + module.add.message(message.noResults); + } + } + else { + module.verbose('All items filtered, hiding dropdown', searchTerm); + module.hideMenu(); + } + } + else { + module.remove.empty(); + module.remove.message(); + } + if(settings.allowAdditions) { + module.add.userSuggestion(query); + } + if(module.is.searchSelection() && module.can.show() && module.is.focusedOnSearch() ) { + module.show(); + } + } + ; + if(settings.useLabels && module.has.maxSelections()) { + return; + } + if(settings.apiSettings) { + if( module.can.useAPI() ) { + module.queryRemote(searchTerm, function() { + afterFiltered(); + }); + } + else { + module.error(error.noAPI); + } + } + else { + module.filterItems(searchTerm); + afterFiltered(); + } + }, + + queryRemote: function(query, callback) { + var + apiSettings = { + errorDuration : false, + cache : 'local', + throttle : settings.throttle, + urlData : { + query: query + }, + onError: function() { + module.add.message(message.serverError); + callback(); + }, + onFailure: function() { + module.add.message(message.serverError); + callback(); + }, + onSuccess : function(response) { + module.remove.message(); + module.setup.menu({ + values: response[fields.remoteValues] + }); + callback(); + } + } + ; + if( !$module.api('get request') ) { + module.setup.api(); + } + apiSettings = $.extend(true, {}, apiSettings, settings.apiSettings); + $module + .api('setting', apiSettings) + .api('query') + ; + }, + + filterItems: function(query) { + var + searchTerm = (query !== undefined) + ? query + : module.get.query(), + results = null, + escapedTerm = module.escape.regExp(searchTerm), + beginsWithRegExp = new RegExp('^' + escapedTerm, 'igm') + ; + // avoid loop if we're matching nothing + if( module.has.query() ) { + results = []; + + module.verbose('Searching for matching values', searchTerm); + $item + .each(function(){ + var + $choice = $(this), + text, + value + ; + if(settings.match == 'both' || settings.match == 'text') { + text = String(module.get.choiceText($choice, false)); + if(text.search(beginsWithRegExp) !== -1) { + results.push(this); + return true; + } + else if (settings.fullTextSearch === 'exact' && module.exactSearch(searchTerm, text)) { + results.push(this); + return true; + } + else if (settings.fullTextSearch === true && module.fuzzySearch(searchTerm, text)) { + results.push(this); + return true; + } + } + if(settings.match == 'both' || settings.match == 'value') { + value = String(module.get.choiceValue($choice, text)); + + if(value.search(beginsWithRegExp) !== -1) { + results.push(this); + return true; + } + else if(settings.fullTextSearch && module.fuzzySearch(searchTerm, value)) { + results.push(this); + return true; + } + } + }) + ; + } + module.debug('Showing only matched items', searchTerm); + module.remove.filteredItem(); + if(results) { + $item + .not(results) + .addClass(className.filtered) + ; + } + }, + + fuzzySearch: function(query, term) { + var + termLength = term.length, + queryLength = query.length + ; + query = query.toLowerCase(); + term = term.toLowerCase(); + if(queryLength > termLength) { + return false; + } + if(queryLength === termLength) { + return (query === term); + } + search: for (var characterIndex = 0, nextCharacterIndex = 0; characterIndex < queryLength; characterIndex++) { + var + queryCharacter = query.charCodeAt(characterIndex) + ; + while(nextCharacterIndex < termLength) { + if(term.charCodeAt(nextCharacterIndex++) === queryCharacter) { + continue search; + } + } + return false; + } + return true; + }, + exactSearch: function (query, term) { + query = query.toLowerCase(); + term = term.toLowerCase(); + if(term.indexOf(query) > -1) { + return true; + } + return false; + }, + filterActive: function() { + if(settings.useLabels) { + $item.filter('.' + className.active) + .addClass(className.filtered) + ; + } + }, + + focusSearch: function(skipHandler) { + if( module.has.search() && !module.is.focusedOnSearch() ) { + if(skipHandler) { + $module.off('focus' + eventNamespace, selector.search); + $search.focus(); + $module.on('focus' + eventNamespace, selector.search, module.event.search.focus); + } + else { + $search.focus(); + } + } + }, + + forceSelection: function() { + var + $currentlySelected = $item.not(className.filtered).filter('.' + className.selected).eq(0), + $activeItem = $item.not(className.filtered).filter('.' + className.active).eq(0), + $selectedItem = ($currentlySelected.length > 0) + ? $currentlySelected + : $activeItem, + hasSelected = ($selectedItem.length > 0) + ; + if(hasSelected) { + module.debug('Forcing partial selection to selected item', $selectedItem); + module.event.item.click.call($selectedItem, {}, true); + return; + } + else { + if(settings.allowAdditions) { + module.set.selected(module.get.query()); + module.remove.searchTerm(); + } + else { + module.remove.searchTerm(); + } + } + }, + + event: { + change: function() { + if(!internalChange) { + module.debug('Input changed, updating selection'); + module.set.selected(); + } + }, + focus: function() { + if(settings.showOnFocus && !activated && module.is.hidden() && !pageLostFocus) { + module.show(); + } + }, + blur: function(event) { + pageLostFocus = (document.activeElement === this); + if(!activated && !pageLostFocus) { + module.remove.activeLabel(); + module.hide(); + } + }, + mousedown: function() { + if(module.is.searchSelection()) { + // prevent menu hiding on immediate re-focus + willRefocus = true; + } + else { + // prevents focus callback from occurring on mousedown + activated = true; + } + }, + mouseup: function() { + if(module.is.searchSelection()) { + // prevent menu hiding on immediate re-focus + willRefocus = false; + } + else { + activated = false; + } + }, + click: function(event) { + var + $target = $(event.target) + ; + // focus search + if($target.is($module)) { + if(!module.is.focusedOnSearch()) { + module.focusSearch(); + } + else { + module.show(); + } + } + }, + search: { + focus: function() { + activated = true; + if(module.is.multiple()) { + module.remove.activeLabel(); + } + if(settings.showOnFocus) { + module.search(); + } + }, + blur: function(event) { + pageLostFocus = (document.activeElement === this); + if(!willRefocus) { + if(!itemActivated && !pageLostFocus) { + if(settings.forceSelection) { + module.forceSelection(); + } + module.hide(); + } + } + willRefocus = false; + } + }, + icon: { + click: function(event) { + module.toggle(); + } + }, + text: { + focus: function(event) { + activated = true; + module.focusSearch(); + } + }, + input: function(event) { + if(module.is.multiple() || module.is.searchSelection()) { + module.set.filtered(); + } + clearTimeout(module.timer); + module.timer = setTimeout(module.search, settings.delay.search); + }, + label: { + click: function(event) { + var + $label = $(this), + $labels = $module.find(selector.label), + $activeLabels = $labels.filter('.' + className.active), + $nextActive = $label.nextAll('.' + className.active), + $prevActive = $label.prevAll('.' + className.active), + $range = ($nextActive.length > 0) + ? $label.nextUntil($nextActive).add($activeLabels).add($label) + : $label.prevUntil($prevActive).add($activeLabels).add($label) + ; + if(event.shiftKey) { + $activeLabels.removeClass(className.active); + $range.addClass(className.active); + } + else if(event.ctrlKey) { + $label.toggleClass(className.active); + } + else { + $activeLabels.removeClass(className.active); + $label.addClass(className.active); + } + settings.onLabelSelect.apply(this, $labels.filter('.' + className.active)); + } + }, + remove: { + click: function() { + var + $label = $(this).parent() + ; + if( $label.hasClass(className.active) ) { + // remove all selected labels + module.remove.activeLabels(); + } + else { + // remove this label only + module.remove.activeLabels( $label ); + } + } + }, + test: { + toggle: function(event) { + var + toggleBehavior = (module.is.multiple()) + ? module.show + : module.toggle + ; + if(module.is.bubbledLabelClick(event) || module.is.bubbledIconClick(event)) { + return; + } + if( module.determine.eventOnElement(event, toggleBehavior) ) { + event.preventDefault(); + } + }, + touch: function(event) { + module.determine.eventOnElement(event, function() { + if(event.type == 'touchstart') { + module.timer = setTimeout(function() { + module.hide(); + }, settings.delay.touch); + } + else if(event.type == 'touchmove') { + clearTimeout(module.timer); + } + }); + event.stopPropagation(); + }, + hide: function(event) { + module.determine.eventInModule(event, module.hide); + } + }, + select: { + mutation: function(mutations) { + module.debug('<select> modified, recreating menu'); + module.setup.select(); + } + }, + menu: { + mutation: function(mutations) { + var + mutation = mutations[0], + $addedNode = mutation.addedNodes + ? $(mutation.addedNodes[0]) + : $(false), + $removedNode = mutation.removedNodes + ? $(mutation.removedNodes[0]) + : $(false), + $changedNodes = $addedNode.add($removedNode), + isUserAddition = $changedNodes.is(selector.addition) || $changedNodes.closest(selector.addition).length > 0, + isMessage = $changedNodes.is(selector.message) || $changedNodes.closest(selector.message).length > 0 + ; + if(isUserAddition || isMessage) { + module.debug('Updating item selector cache'); + module.refreshItems(); + } + else { + module.debug('Menu modified, updating selector cache'); + module.refresh(); + } + }, + mousedown: function() { + itemActivated = true; + }, + mouseup: function() { + itemActivated = false; + } + }, + item: { + mouseenter: function(event) { + var + $target = $(event.target), + $item = $(this), + $subMenu = $item.children(selector.menu), + $otherMenus = $item.siblings(selector.item).children(selector.menu), + hasSubMenu = ($subMenu.length > 0), + isBubbledEvent = ($subMenu.find($target).length > 0) + ; + if( !isBubbledEvent && hasSubMenu ) { + clearTimeout(module.itemTimer); + module.itemTimer = setTimeout(function() { + module.verbose('Showing sub-menu', $subMenu); + $.each($otherMenus, function() { + module.animate.hide(false, $(this)); + }); + module.animate.show(false, $subMenu); + }, settings.delay.show); + event.preventDefault(); + } + }, + mouseleave: function(event) { + var + $subMenu = $(this).children(selector.menu) + ; + if($subMenu.length > 0) { + clearTimeout(module.itemTimer); + module.itemTimer = setTimeout(function() { + module.verbose('Hiding sub-menu', $subMenu); + module.animate.hide(false, $subMenu); + }, settings.delay.hide); + } + }, + click: function (event, skipRefocus) { + var + $choice = $(this), + $target = (event) + ? $(event.target) + : $(''), + $subMenu = $choice.find(selector.menu), + text = module.get.choiceText($choice), + value = module.get.choiceValue($choice, text), + hasSubMenu = ($subMenu.length > 0), + isBubbledEvent = ($subMenu.find($target).length > 0) + ; + if(!isBubbledEvent && (!hasSubMenu || settings.allowCategorySelection)) { + if(module.is.searchSelection()) { + if(settings.allowAdditions) { + module.remove.userAddition(); + } + module.remove.searchTerm(); + if(!module.is.focusedOnSearch() && !(skipRefocus == true)) { + module.focusSearch(true); + } + } + if(!settings.useLabels) { + module.remove.filteredItem(); + module.set.scrollPosition($choice); + } + module.determine.selectAction.call(this, text, value); + } + } + }, + + document: { + // label selection should occur even when element has no focus + keydown: function(event) { + var + pressedKey = event.which, + isShortcutKey = module.is.inObject(pressedKey, keys) + ; + if(isShortcutKey) { + var + $label = $module.find(selector.label), + $activeLabel = $label.filter('.' + className.active), + activeValue = $activeLabel.data(metadata.value), + labelIndex = $label.index($activeLabel), + labelCount = $label.length, + hasActiveLabel = ($activeLabel.length > 0), + hasMultipleActive = ($activeLabel.length > 1), + isFirstLabel = (labelIndex === 0), + isLastLabel = (labelIndex + 1 == labelCount), + isSearch = module.is.searchSelection(), + isFocusedOnSearch = module.is.focusedOnSearch(), + isFocused = module.is.focused(), + caretAtStart = (isFocusedOnSearch && module.get.caretPosition() === 0), + $nextLabel + ; + if(isSearch && !hasActiveLabel && !isFocusedOnSearch) { + return; + } + + if(pressedKey == keys.leftArrow) { + // activate previous label + if((isFocused || caretAtStart) && !hasActiveLabel) { + module.verbose('Selecting previous label'); + $label.last().addClass(className.active); + } + else if(hasActiveLabel) { + if(!event.shiftKey) { + module.verbose('Selecting previous label'); + $label.removeClass(className.active); + } + else { + module.verbose('Adding previous label to selection'); + } + if(isFirstLabel && !hasMultipleActive) { + $activeLabel.addClass(className.active); + } + else { + $activeLabel.prev(selector.siblingLabel) + .addClass(className.active) + .end() + ; + } + event.preventDefault(); + } + } + else if(pressedKey == keys.rightArrow) { + // activate first label + if(isFocused && !hasActiveLabel) { + $label.first().addClass(className.active); + } + // activate next label + if(hasActiveLabel) { + if(!event.shiftKey) { + module.verbose('Selecting next label'); + $label.removeClass(className.active); + } + else { + module.verbose('Adding next label to selection'); + } + if(isLastLabel) { + if(isSearch) { + if(!isFocusedOnSearch) { + module.focusSearch(); + } + else { + $label.removeClass(className.active); + } + } + else if(hasMultipleActive) { + $activeLabel.next(selector.siblingLabel).addClass(className.active); + } + else { + $activeLabel.addClass(className.active); + } + } + else { + $activeLabel.next(selector.siblingLabel).addClass(className.active); + } + event.preventDefault(); + } + } + else if(pressedKey == keys.deleteKey || pressedKey == keys.backspace) { + if(hasActiveLabel) { + module.verbose('Removing active labels'); + if(isLastLabel) { + if(isSearch && !isFocusedOnSearch) { + module.focusSearch(); + } + } + $activeLabel.last().next(selector.siblingLabel).addClass(className.active); + module.remove.activeLabels($activeLabel); + event.preventDefault(); + } + else if(caretAtStart && !hasActiveLabel && pressedKey == keys.backspace) { + module.verbose('Removing last label on input backspace'); + $activeLabel = $label.last().addClass(className.active); + module.remove.activeLabels($activeLabel); + } + } + else { + $activeLabel.removeClass(className.active); + } + } + } + }, + + keydown: function(event) { + var + pressedKey = event.which, + isShortcutKey = module.is.inObject(pressedKey, keys) + ; + if(isShortcutKey) { + var + $currentlySelected = $item.not(selector.unselectable).filter('.' + className.selected).eq(0), + $activeItem = $menu.children('.' + className.active).eq(0), + $selectedItem = ($currentlySelected.length > 0) + ? $currentlySelected + : $activeItem, + $visibleItems = ($selectedItem.length > 0) + ? $selectedItem.siblings(':not(.' + className.filtered +')').addBack() + : $menu.children(':not(.' + className.filtered +')'), + $subMenu = $selectedItem.children(selector.menu), + $parentMenu = $selectedItem.closest(selector.menu), + inVisibleMenu = ($parentMenu.hasClass(className.visible) || $parentMenu.hasClass(className.animating) || $parentMenu.parent(selector.menu).length > 0), + hasSubMenu = ($subMenu.length> 0), + hasSelectedItem = ($selectedItem.length > 0), + selectedIsSelectable = ($selectedItem.not(selector.unselectable).length > 0), + delimiterPressed = (pressedKey == keys.delimiter && settings.allowAdditions && module.is.multiple()), + isAdditionWithoutMenu = (settings.allowAdditions && settings.hideAdditions && (pressedKey == keys.enter || delimiterPressed) && selectedIsSelectable), + $nextItem, + isSubMenuItem, + newIndex + ; + // allow selection with menu closed + if(isAdditionWithoutMenu) { + module.verbose('Selecting item from keyboard shortcut', $selectedItem); + module.event.item.click.call($selectedItem, event); + if(module.is.searchSelection()) { + module.remove.searchTerm(); + } + } + + // visible menu keyboard shortcuts + if( module.is.visible() ) { + + // enter (select or open sub-menu) + if(pressedKey == keys.enter || delimiterPressed) { + if(pressedKey == keys.enter && hasSelectedItem && hasSubMenu && !settings.allowCategorySelection) { + module.verbose('Pressed enter on unselectable category, opening sub menu'); + pressedKey = keys.rightArrow; + } + else if(selectedIsSelectable) { + module.verbose('Selecting item from keyboard shortcut', $selectedItem); + module.event.item.click.call($selectedItem, event); + if(module.is.searchSelection()) { + module.remove.searchTerm(); + } + } + event.preventDefault(); + } + + // sub-menu actions + if(hasSelectedItem) { + + if(pressedKey == keys.leftArrow) { + + isSubMenuItem = ($parentMenu[0] !== $menu[0]); + + if(isSubMenuItem) { + module.verbose('Left key pressed, closing sub-menu'); + module.animate.hide(false, $parentMenu); + $selectedItem + .removeClass(className.selected) + ; + $parentMenu + .closest(selector.item) + .addClass(className.selected) + ; + event.preventDefault(); + } + } + + // right arrow (show sub-menu) + if(pressedKey == keys.rightArrow) { + if(hasSubMenu) { + module.verbose('Right key pressed, opening sub-menu'); + module.animate.show(false, $subMenu); + $selectedItem + .removeClass(className.selected) + ; + $subMenu + .find(selector.item).eq(0) + .addClass(className.selected) + ; + event.preventDefault(); + } + } + } + + // up arrow (traverse menu up) + if(pressedKey == keys.upArrow) { + $nextItem = (hasSelectedItem && inVisibleMenu) + ? $selectedItem.prevAll(selector.item + ':not(' + selector.unselectable + ')').eq(0) + : $item.eq(0) + ; + if($visibleItems.index( $nextItem ) < 0) { + module.verbose('Up key pressed but reached top of current menu'); + event.preventDefault(); + return; + } + else { + module.verbose('Up key pressed, changing active item'); + $selectedItem + .removeClass(className.selected) + ; + $nextItem + .addClass(className.selected) + ; + module.set.scrollPosition($nextItem); + if(settings.selectOnKeydown && module.is.single()) { + module.set.selectedItem($nextItem); + } + } + event.preventDefault(); + } + + // down arrow (traverse menu down) + if(pressedKey == keys.downArrow) { + $nextItem = (hasSelectedItem && inVisibleMenu) + ? $nextItem = $selectedItem.nextAll(selector.item + ':not(' + selector.unselectable + ')').eq(0) + : $item.eq(0) + ; + if($nextItem.length === 0) { + module.verbose('Down key pressed but reached bottom of current menu'); + event.preventDefault(); + return; + } + else { + module.verbose('Down key pressed, changing active item'); + $item + .removeClass(className.selected) + ; + $nextItem + .addClass(className.selected) + ; + module.set.scrollPosition($nextItem); + if(settings.selectOnKeydown && module.is.single()) { + module.set.selectedItem($nextItem); + } + } + event.preventDefault(); + } + + // page down (show next page) + if(pressedKey == keys.pageUp) { + module.scrollPage('up'); + event.preventDefault(); + } + if(pressedKey == keys.pageDown) { + module.scrollPage('down'); + event.preventDefault(); + } + + // escape (close menu) + if(pressedKey == keys.escape) { + module.verbose('Escape key pressed, closing dropdown'); + module.hide(); + } + + } + else { + // delimiter key + if(delimiterPressed) { + event.preventDefault(); + } + // down arrow (open menu) + if(pressedKey == keys.downArrow && !module.is.visible()) { + module.verbose('Down key pressed, showing dropdown'); + module.select.firstUnfiltered(); + module.show(); + event.preventDefault(); + } + } + } + else { + if( !module.has.search() ) { + module.set.selectedLetter( String.fromCharCode(pressedKey) ); + } + } + } + }, + + trigger: { + change: function() { + var + events = document.createEvent('HTMLEvents'), + inputElement = $input[0] + ; + if(inputElement) { + module.verbose('Triggering native change event'); + events.initEvent('change', true, false); + inputElement.dispatchEvent(events); + } + } + }, + + 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 ].call(element, text, value, this); + } + else if( $.isFunction(settings.action) ) { + module.verbose('Triggering user action', settings.action, text, value); + settings.action.call(element, text, value, this); + } + else { + module.error(error.action, settings.action); + } + }, + eventInModule: function(event, callback) { + var + $target = $(event.target), + inDocument = ($target.closest(document.documentElement).length > 0), + inModule = ($target.closest($module).length > 0) + ; + callback = $.isFunction(callback) + ? callback + : function(){} + ; + if(inDocument && !inModule) { + module.verbose('Triggering event', callback); + callback(); + return true; + } + else { + module.verbose('Event occurred in dropdown, canceling callback'); + return false; + } + }, + eventOnElement: function(event, callback) { + var + $target = $(event.target), + $label = $target.closest(selector.siblingLabel), + inVisibleDOM = document.body.contains(event.target), + notOnLabel = ($module.find($label).length === 0), + notInMenu = ($target.closest($menu).length === 0) + ; + callback = $.isFunction(callback) + ? callback + : function(){} + ; + if(inVisibleDOM && notOnLabel && notInMenu) { + module.verbose('Triggering event', callback); + callback(); + return true; + } + else { + module.verbose('Event occurred in dropdown menu, canceling callback'); + return false; + } + } + }, + + action: { + + nothing: function() {}, + + activate: function(text, value, element) { + value = (value !== undefined) + ? value + : text + ; + if( module.can.activate( $(element) ) ) { + module.set.selected(value, $(element)); + if(module.is.multiple() && !module.is.allFiltered()) { + return; + } + else { + module.hideAndClear(); + } + } + }, + + select: function(text, value, element) { + value = (value !== undefined) + ? value + : text + ; + if( module.can.activate( $(element) ) ) { + module.set.value(value, $(element)); + if(module.is.multiple() && !module.is.allFiltered()) { + return; + } + else { + module.hideAndClear(); + } + } + }, + + combo: function(text, value, element) { + value = (value !== undefined) + ? value + : text + ; + module.set.selected(value, $(element)); + module.hideAndClear(); + }, + + hide: function(text, value, element) { + module.set.value(value, text); + module.hideAndClear(); + } + + }, + + get: { + id: function() { + return id; + }, + defaultText: function() { + return $module.data(metadata.defaultText); + }, + defaultValue: function() { + return $module.data(metadata.defaultValue); + }, + placeholderText: function() { + return $module.data(metadata.placeholderText) || ''; + }, + text: function() { + return $text.text(); + }, + query: function() { + return $.trim($search.val()); + }, + searchWidth: function(value) { + value = (value !== undefined) + ? value + : $search.val() + ; + $sizer.text(value); + // prevent rounding issues + return Math.ceil( $sizer.width() + 1); + }, + selectionCount: function() { + var + values = module.get.values(), + count + ; + count = ( module.is.multiple() ) + ? $.isArray(values) + ? values.length + : 0 + : (module.get.value() !== '') + ? 1 + : 0 + ; + return count; + }, + transition: function($subMenu) { + return (settings.transition == 'auto') + ? module.is.upward($subMenu) + ? 'slide up' + : 'slide down' + : settings.transition + ; + }, + userValues: function() { + var + values = module.get.values() + ; + if(!values) { + return false; + } + values = $.isArray(values) + ? values + : [values] + ; + return $.grep(values, function(value) { + return (module.get.item(value) === false); + }); + }, + uniqueArray: function(array) { + return $.grep(array, function (value, index) { + return $.inArray(value, array) === index; + }); + }, + caretPosition: function() { + var + input = $search.get(0), + range, + rangeLength + ; + if('selectionStart' in input) { + return input.selectionStart; + } + else if (document.selection) { + input.focus(); + range = document.selection.createRange(); + rangeLength = range.text.length; + range.moveStart('character', -input.value.length); + return range.text.length - rangeLength; + } + }, + value: function() { + var + value = ($input.length > 0) + ? $input.val() + : $module.data(metadata.value), + isEmptyMultiselect = ($.isArray(value) && value.length === 1 && value[0] === '') + ; + // prevents placeholder element from being selected when multiple + return (value === undefined || isEmptyMultiselect) + ? '' + : value + ; + }, + values: function() { + var + value = module.get.value() + ; + if(value === '') { + return ''; + } + return ( !module.has.selectInput() && module.is.multiple() ) + ? (typeof value == 'string') // delimited string + ? value.split(settings.delimiter) + : '' + : value + ; + }, + remoteValues: function() { + var + values = module.get.values(), + remoteValues = false + ; + if(values) { + if(typeof values == 'string') { + values = [values]; + } + $.each(values, function(index, value) { + var + name = module.read.remoteData(value) + ; + module.verbose('Restoring value from session data', name, value); + if(name) { + if(!remoteValues) { + remoteValues = {}; + } + remoteValues[value] = name; + } + }); + } + return remoteValues; + }, + choiceText: function($choice, preserveHTML) { + preserveHTML = (preserveHTML !== undefined) + ? preserveHTML + : settings.preserveHTML + ; + if($choice) { + if($choice.find(selector.menu).length > 0) { + module.verbose('Retrieving text of element with sub-menu'); + $choice = $choice.clone(); + $choice.find(selector.menu).remove(); + $choice.find(selector.menuIcon).remove(); + } + return ($choice.data(metadata.text) !== undefined) + ? $choice.data(metadata.text) + : (preserveHTML) + ? $.trim($choice.html()) + : $.trim($choice.text()) + ; + } + }, + choiceValue: function($choice, choiceText) { + choiceText = choiceText || module.get.choiceText($choice); + if(!$choice) { + return false; + } + return ($choice.data(metadata.value) !== undefined) + ? String( $choice.data(metadata.value) ) + : (typeof choiceText === 'string') + ? $.trim(choiceText.toLowerCase()) + : String(choiceText) + ; + }, + inputEvent: function() { + var + input = $search[0] + ; + if(input) { + return (input.oninput !== undefined) + ? 'input' + : (input.onpropertychange !== undefined) + ? 'propertychange' + : 'keyup' + ; + } + return false; + }, + selectValues: function() { + var + select = {} + ; + select.values = []; + $module + .find('option') + .each(function() { + var + $option = $(this), + name = $option.html(), + disabled = $option.attr('disabled'), + value = ( $option.attr('value') !== undefined ) + ? $option.attr('value') + : name + ; + if(settings.placeholder === 'auto' && value === '') { + select.placeholder = name; + } + else { + select.values.push({ + name : name, + value : value, + disabled : disabled + }); + } + }) + ; + if(settings.placeholder && settings.placeholder !== 'auto') { + module.debug('Setting placeholder value to', settings.placeholder); + select.placeholder = settings.placeholder; + } + if(settings.sortSelect) { + select.values.sort(function(a, b) { + return (a.name > b.name) + ? 1 + : -1 + ; + }); + module.debug('Retrieved and sorted values from select', select); + } + else { + module.debug('Retrieved values from select', select); + } + return select; + }, + activeItem: function() { + return $item.filter('.' + className.active); + }, + selectedItem: function() { + var + $selectedItem = $item.not(selector.unselectable).filter('.' + className.selected) + ; + return ($selectedItem.length > 0) + ? $selectedItem + : $item.eq(0) + ; + }, + itemWithAdditions: function(value) { + var + $items = module.get.item(value), + $userItems = module.create.userChoice(value), + hasUserItems = ($userItems && $userItems.length > 0) + ; + if(hasUserItems) { + $items = ($items.length > 0) + ? $items.add($userItems) + : $userItems + ; + } + return $items; + }, + item: function(value, strict) { + var + $selectedItem = false, + shouldSearch, + isMultiple + ; + value = (value !== undefined) + ? value + : ( module.get.values() !== undefined) + ? module.get.values() + : module.get.text() + ; + shouldSearch = (isMultiple) + ? (value.length > 0) + : (value !== undefined && value !== null) + ; + isMultiple = (module.is.multiple() && $.isArray(value)); + strict = (value === '' || value === 0) + ? true + : strict || false + ; + if(shouldSearch) { + $item + .each(function() { + var + $choice = $(this), + optionText = module.get.choiceText($choice), + optionValue = module.get.choiceValue($choice, optionText) + ; + // safe early exit + if(optionValue === null || optionValue === undefined) { + return; + } + if(isMultiple) { + if($.inArray( String(optionValue), value) !== -1 || $.inArray(optionText, value) !== -1) { + $selectedItem = ($selectedItem) + ? $selectedItem.add($choice) + : $choice + ; + } + } + else if(strict) { + module.verbose('Ambiguous dropdown value using strict type check', $choice, value); + if( optionValue === value || optionText === value) { + $selectedItem = $choice; + return true; + } + } + else { + if( String(optionValue) == String(value) || optionText == value) { + module.verbose('Found select item by value', optionValue, value); + $selectedItem = $choice; + return true; + } + } + }) + ; + } + return $selectedItem; + } + }, + + check: { + maxSelections: function(selectionCount) { + if(settings.maxSelections) { + selectionCount = (selectionCount !== undefined) + ? selectionCount + : module.get.selectionCount() + ; + if(selectionCount >= settings.maxSelections) { + module.debug('Maximum selection count reached'); + if(settings.useLabels) { + $item.addClass(className.filtered); + module.add.message(message.maxSelections); + } + return true; + } + else { + module.verbose('No longer at maximum selection count'); + module.remove.message(); + module.remove.filteredItem(); + if(module.is.searchSelection()) { + module.filterItems(); + } + return false; + } + } + return true; + } + }, + + restore: { + defaults: function() { + module.clear(); + module.restore.defaultText(); + module.restore.defaultValue(); + }, + defaultText: function() { + var + defaultText = module.get.defaultText(), + placeholderText = module.get.placeholderText + ; + if(defaultText === placeholderText) { + module.debug('Restoring default placeholder text', defaultText); + module.set.placeholderText(defaultText); + } + else { + module.debug('Restoring default text', defaultText); + module.set.text(defaultText); + } + }, + placeholderText: function() { + module.set.placeholderText(); + }, + defaultValue: function() { + var + defaultValue = module.get.defaultValue() + ; + if(defaultValue !== undefined) { + module.debug('Restoring default value', defaultValue); + if(defaultValue !== '') { + module.set.value(defaultValue); + module.set.selected(); + } + else { + module.remove.activeItem(); + module.remove.selectedItem(); + } + } + }, + labels: function() { + if(settings.allowAdditions) { + if(!settings.useLabels) { + module.error(error.labels); + settings.useLabels = true; + } + module.debug('Restoring selected values'); + module.create.userLabels(); + } + module.check.maxSelections(); + }, + selected: function() { + module.restore.values(); + if(module.is.multiple()) { + module.debug('Restoring previously selected values and labels'); + module.restore.labels(); + } + else { + module.debug('Restoring previously selected values'); + } + }, + values: function() { + // prevents callbacks from occurring on initial load + module.set.initialLoad(); + if(settings.apiSettings && settings.saveRemoteData && module.get.remoteValues()) { + module.restore.remoteValues(); + } + else { + module.set.selected(); + } + module.remove.initialLoad(); + }, + remoteValues: function() { + var + values = module.get.remoteValues() + ; + module.debug('Recreating selected from session data', values); + if(values) { + if( module.is.single() ) { + $.each(values, function(value, name) { + module.set.text(name); + }); + } + else { + $.each(values, function(value, name) { + module.add.label(value, name); + }); + } + } + } + }, + + read: { + remoteData: function(value) { + var + name + ; + if(window.Storage === undefined) { + module.error(error.noStorage); + return; + } + name = sessionStorage.getItem(value); + return (name !== undefined) + ? name + : false + ; + } + }, + + save: { + defaults: function() { + module.save.defaultText(); + module.save.placeholderText(); + module.save.defaultValue(); + }, + defaultValue: function() { + var + value = module.get.value() + ; + module.verbose('Saving default value as', value); + $module.data(metadata.defaultValue, value); + }, + defaultText: function() { + var + text = module.get.text() + ; + module.verbose('Saving default text as', text); + $module.data(metadata.defaultText, text); + }, + placeholderText: function() { + var + text + ; + if(settings.placeholder !== false && $text.hasClass(className.placeholder)) { + text = module.get.text(); + module.verbose('Saving placeholder text as', text); + $module.data(metadata.placeholderText, text); + } + }, + remoteData: function(name, value) { + if(window.Storage === undefined) { + module.error(error.noStorage); + return; + } + module.verbose('Saving remote data to session storage', value, name); + sessionStorage.setItem(value, name); + } + }, + + clear: function() { + if(module.is.multiple() && settings.useLabels) { + module.remove.labels(); + } + else { + module.remove.activeItem(); + module.remove.selectedItem(); + } + module.set.placeholderText(); + module.clearValue(); + }, + + clearValue: function() { + module.set.value(''); + }, + + scrollPage: function(direction, $selectedItem) { + var + $currentItem = $selectedItem || module.get.selectedItem(), + $menu = $currentItem.closest(selector.menu), + menuHeight = $menu.outerHeight(), + currentScroll = $menu.scrollTop(), + itemHeight = $item.eq(0).outerHeight(), + itemsPerPage = Math.floor(menuHeight / itemHeight), + maxScroll = $menu.prop('scrollHeight'), + newScroll = (direction == 'up') + ? currentScroll - (itemHeight * itemsPerPage) + : currentScroll + (itemHeight * itemsPerPage), + $selectableItem = $item.not(selector.unselectable), + isWithinRange, + $nextSelectedItem, + elementIndex + ; + elementIndex = (direction == 'up') + ? $selectableItem.index($currentItem) - itemsPerPage + : $selectableItem.index($currentItem) + itemsPerPage + ; + isWithinRange = (direction == 'up') + ? (elementIndex >= 0) + : (elementIndex < $selectableItem.length) + ; + $nextSelectedItem = (isWithinRange) + ? $selectableItem.eq(elementIndex) + : (direction == 'up') + ? $selectableItem.first() + : $selectableItem.last() + ; + if($nextSelectedItem.length > 0) { + module.debug('Scrolling page', direction, $nextSelectedItem); + $currentItem + .removeClass(className.selected) + ; + $nextSelectedItem + .addClass(className.selected) + ; + if(settings.selectOnKeydown && module.is.single()) { + module.set.selectedItem($nextSelectedItem); + } + $menu + .scrollTop(newScroll) + ; + } + }, + + set: { + filtered: function() { + var + isMultiple = module.is.multiple(), + isSearch = module.is.searchSelection(), + isSearchMultiple = (isMultiple && isSearch), + searchValue = (isSearch) + ? module.get.query() + : '', + hasSearchValue = (typeof searchValue === 'string' && searchValue.length > 0), + searchWidth = module.get.searchWidth(), + valueIsSet = searchValue !== '' + ; + if(isMultiple && hasSearchValue) { + module.verbose('Adjusting input width', searchWidth, settings.glyphWidth); + $search.css('width', searchWidth); + } + if(hasSearchValue || (isSearchMultiple && valueIsSet)) { + module.verbose('Hiding placeholder text'); + $text.addClass(className.filtered); + } + else if(!isMultiple || (isSearchMultiple && !valueIsSet)) { + module.verbose('Showing placeholder text'); + $text.removeClass(className.filtered); + } + }, + empty: function() { + $module.addClass(className.empty); + }, + loading: function() { + $module.addClass(className.loading); + }, + placeholderText: function(text) { + text = text || module.get.placeholderText(); + module.debug('Setting placeholder text', text); + module.set.text(text); + $text.addClass(className.placeholder); + }, + tabbable: function() { + if( module.has.search() ) { + module.debug('Added tabindex to searchable dropdown'); + $search + .val('') + .attr('tabindex', 0) + ; + $menu + .attr('tabindex', -1) + ; + } + else { + module.debug('Added tabindex to dropdown'); + if( $module.attr('tabindex') === undefined) { + $module + .attr('tabindex', 0) + ; + $menu + .attr('tabindex', -1) + ; + } + } + }, + initialLoad: function() { + module.verbose('Setting initial load'); + initialLoad = true; + }, + activeItem: function($item) { + if( settings.allowAdditions && $item.filter(selector.addition).length > 0 ) { + $item.addClass(className.filtered); + } + else { + $item.addClass(className.active); + } + }, + partialSearch: function(text) { + var + length = module.get.query().length + ; + $search.val( text.substr(0 , length)); + }, + scrollPosition: function($item, forceScroll) { + var + edgeTolerance = 5, + $menu, + hasActive, + offset, + itemHeight, + itemOffset, + menuOffset, + menuScroll, + menuHeight, + abovePage, + belowPage + ; + + $item = $item || module.get.selectedItem(); + $menu = $item.closest(selector.menu); + hasActive = ($item && $item.length > 0); + forceScroll = (forceScroll !== undefined) + ? forceScroll + : false + ; + if($item && $menu.length > 0 && hasActive) { + itemOffset = $item.position().top; + + $menu.addClass(className.loading); + menuScroll = $menu.scrollTop(); + menuOffset = $menu.offset().top; + itemOffset = $item.offset().top; + offset = menuScroll - menuOffset + itemOffset; + if(!forceScroll) { + menuHeight = $menu.height(); + belowPage = menuScroll + menuHeight < (offset + edgeTolerance); + abovePage = ((offset - edgeTolerance) < menuScroll); + } + module.debug('Scrolling to active item', offset); + if(forceScroll || abovePage || belowPage) { + $menu.scrollTop(offset); + } + $menu.removeClass(className.loading); + } + }, + text: function(text) { + if(settings.action !== 'select') { + if(settings.action == 'combo') { + module.debug('Changing combo button text', text, $combo); + if(settings.preserveHTML) { + $combo.html(text); + } + else { + $combo.text(text); + } + } + else { + if(text !== module.get.placeholderText()) { + $text.removeClass(className.placeholder); + } + module.debug('Changing text', text, $text); + $text + .removeClass(className.filtered) + ; + if(settings.preserveHTML) { + $text.html(text); + } + else { + $text.text(text); + } + } + } + }, + selectedItem: function($item) { + var + value = module.get.choiceValue($item), + text = module.get.choiceText($item, false) + ; + module.debug('Setting user selection to item', $item); + module.remove.activeItem(); + module.set.partialSearch(text); + module.set.activeItem($item); + module.set.selected(value, $item); + module.set.text(text); + }, + selectedLetter: function(letter) { + var + $selectedItem = $item.filter('.' + className.selected), + alreadySelectedLetter = $selectedItem.length > 0 && module.has.firstLetter($selectedItem, letter), + $nextValue = false, + $nextItem + ; + // check next of same letter + if(alreadySelectedLetter) { + $nextItem = $selectedItem.nextAll($item).eq(0); + if( module.has.firstLetter($nextItem, letter) ) { + $nextValue = $nextItem; + } + } + // check all values + if(!$nextValue) { + $item + .each(function(){ + if(module.has.firstLetter($(this), letter)) { + $nextValue = $(this); + return false; + } + }) + ; + } + // set next value + if($nextValue) { + module.verbose('Scrolling to next value with letter', letter); + module.set.scrollPosition($nextValue); + $selectedItem.removeClass(className.selected); + $nextValue.addClass(className.selected); + if(settings.selectOnKeydown && module.is.single()) { + module.set.selectedItem($nextValue); + } + } + }, + direction: function($menu) { + if(settings.direction == 'auto') { + if(module.is.onScreen($menu)) { + module.remove.upward($menu); + } + else { + module.set.upward($menu); + } + } + else if(settings.direction == 'upward') { + module.set.upward($menu); + } + }, + upward: function($menu) { + var $element = $menu || $module; + $element.addClass(className.upward); + }, + value: function(value, text, $selected) { + var + escapedValue = module.escape.value(value), + hasInput = ($input.length > 0), + isAddition = !module.has.value(value), + currentValue = module.get.values(), + stringValue = (value !== undefined) + ? String(value) + : value, + newValue + ; + if(hasInput) { + if(!settings.allowReselection && stringValue == currentValue) { + module.verbose('Skipping value update already same value', value, currentValue); + if(!module.is.initialLoad()) { + return; + } + } + + if( module.is.single() && module.has.selectInput() && module.can.extendSelect() ) { + module.debug('Adding user option', value); + module.add.optionValue(value); + } + module.debug('Updating input value', escapedValue, currentValue); + internalChange = true; + $input + .val(escapedValue) + ; + if(settings.fireOnInit === false && module.is.initialLoad()) { + module.debug('Input native change event ignored on initial load'); + } + else { + module.trigger.change(); + } + internalChange = false; + } + else { + module.verbose('Storing value in metadata', escapedValue, $input); + if(escapedValue !== currentValue) { + $module.data(metadata.value, stringValue); + } + } + if(settings.fireOnInit === false && module.is.initialLoad()) { + module.verbose('No callback on initial load', settings.onChange); + } + else { + settings.onChange.call(element, value, text, $selected); + } + }, + active: function() { + $module + .addClass(className.active) + ; + }, + multiple: function() { + $module.addClass(className.multiple); + }, + visible: function() { + $module.addClass(className.visible); + }, + exactly: function(value, $selectedItem) { + module.debug('Setting selected to exact values'); + module.clear(); + module.set.selected(value, $selectedItem); + }, + selected: function(value, $selectedItem) { + var + isMultiple = module.is.multiple(), + $userSelectedItem + ; + $selectedItem = (settings.allowAdditions) + ? $selectedItem || module.get.itemWithAdditions(value) + : $selectedItem || module.get.item(value) + ; + if(!$selectedItem) { + return; + } +
<TRUNCATED>