/
jquery.typeahead.js
3903 lines (3424 loc) · 156 KB
/
jquery.typeahead.js
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/*!
* jQuery Typeahead
* Copyright (C) 2018 RunningCoder.org
* Licensed under the MIT license
*
* @author Tom Bertrand
* @version 2.10.4 (2018-4-16)
* @link http://www.runningcoder.org/jquerytypeahead/
*/
(function (factory) {
if (typeof define === "function" && define.amd) {
define("jquery-typeahead", ["jquery"], function (jQuery) {
return factory(jQuery);
});
} else if (typeof module === "object" && module.exports) {
module.exports = (function (jQuery, root) {
if (jQuery === undefined) {
if (typeof window !== "undefined") {
jQuery = require("jquery");
} else {
jQuery = require("jquery")(root);
}
}
return factory(jQuery);
})();
} else {
factory(jQuery);
}
})(function ($) {
"use strict";
window.Typeahead = {
version: '2.10.4'
};
/**
* @private
* Default options
* @link http://www.runningcoder.org/jquerytypeahead/documentation/
*/
var _options = {
input: null, // *RECOMMENDED*, jQuery selector to reach Typeahead's input for initialization
minLength: 2, // Accepts 0 to search on focus, minimum character length to perform a search
maxLength: false, // False as "Infinity" will not put character length restriction for searching results
maxItem: 8, // Accepts 0 / false as "Infinity" meaning all the results will be displayed
dynamic: false, // When true, Typeahead will get a new dataset from the source option on every key press
delay: 300, // delay in ms when dynamic option is set to true
order: null, // "asc" or "desc" to sort results
offset: false, // Set to true to match items starting from their first character
hint: false, // Added support for excessive "space" characters
accent: false, // Will allow to type accent and give letter equivalent results, also can define a custom replacement object
highlight: true, // Added "any" to highlight any word in the template, by default true will only highlight display keys
multiselect: null, // Multiselect configuration object, see documentation for all options
group: false, // Improved feature, Boolean,string,object(key, template (string, function))
groupOrder: null, // New feature, order groups "asc", "desc", Array, Function
maxItemPerGroup: null, // Maximum number of result per Group
dropdownFilter: false, // Take group options string and create a dropdown filter
dynamicFilter: null, // Filter the typeahead results based on dynamic value, Ex: Players based on TeamID
backdrop: false, // Add a backdrop behind Typeahead results
backdropOnFocus: false, // Display the backdrop option as the Typeahead input is :focused
cache: false, // Improved option, true OR 'localStorage' OR 'sessionStorage'
ttl: 3600000, // Cache time to live in ms
compression: false, // Requires LZString library
searchOnFocus: false, // Display search results on input focus
blurOnTab: true, // Blur Typeahead when Tab key is pressed, if false Tab will go though search results
resultContainer: null, // List the results inside any container string or jQuery object
generateOnLoad: null, // Forces the source to be generated on page load even if the input is not focused!
mustSelectItem: false, // The submit function only gets called if an item is selected
href: null, // String or Function to format the url for right-click & open in new tab on link results
display: ["display"], // Allows search in multiple item keys ["display1", "display2"]
template: null, // Display template of each of the result list
templateValue: null, // Set the input value template when an item is clicked
groupTemplate: null, // Set a custom template for the groups
correlativeTemplate: false, // Compile display keys, enables multiple key search from the template string
emptyTemplate: false, // Display an empty template if no result
cancelButton: true, // If text is detected in the input, a cancel button will be available to reset the input (pressing ESC also cancels)
loadingAnimation: true, // Display a loading animation when typeahead is doing request / searching for results
filter: true, // Set to false or function to bypass Typeahead filtering. WARNING: accent, correlativeTemplate, offset & matcher will not be interpreted
matcher: null, // Add an extra filtering function after the typeahead functions
source: null, // Source of data for Typeahead to filter
callback: {
onInit: null, // When Typeahead is first initialized (happens only once)
onReady: null, // When the Typeahead initial preparation is completed
onShowLayout: null, // Called when the layout is shown
onHideLayout: null, // Called when the layout is hidden
onSearch: null, // When data is being fetched & analyzed to give search results
onResult: null, // When the result container is displayed
onLayoutBuiltBefore: null, // When the result HTML is build, modify it before it get showed
onLayoutBuiltAfter: null, // Modify the dom right after the results gets inserted in the result container
onNavigateBefore: null, // When a key is pressed to navigate the results, before the navigation happens
onNavigateAfter: null, // When a key is pressed to navigate the results
onEnter: null, // When an item in the result list is focused
onLeave: null, // When an item in the result list is blurred
onClickBefore: null, // Possibility to e.preventDefault() to prevent the Typeahead behaviors
onClickAfter: null, // Happens after the default clicked behaviors has been executed
onDropdownFilter: null, // When the dropdownFilter is changed, trigger this callback
onSendRequest: null, // Gets called when the Ajax request(s) are sent
onReceiveRequest: null, // Gets called when the Ajax request(s) are all received
onPopulateSource: null, // Perform operation on the source data before it gets in Typeahead data
onCacheSave: null, // Perform operation on the source data before it gets in Typeahead cache
onSubmit: null, // When Typeahead form is submitted
onCancel: null // Triggered if the typeahead had text inside and is cleared
},
selector: {
container: "typeahead__container",
result: "typeahead__result",
list: "typeahead__list",
group: "typeahead__group",
item: "typeahead__item",
empty: "typeahead__empty",
display: "typeahead__display",
query: "typeahead__query",
filter: "typeahead__filter",
filterButton: "typeahead__filter-button",
dropdown: "typeahead__dropdown",
dropdownItem: "typeahead__dropdown-item",
labelContainer: "typeahead__label-container",
label: "typeahead__label",
button: "typeahead__button",
backdrop: "typeahead__backdrop",
hint: "typeahead__hint",
cancelButton: "typeahead__cancel-button"
},
debug: false // Display debug information (RECOMMENDED for dev environment)
};
/**
* @private
* Event namespace
*/
var _namespace = ".typeahead";
/**
* @private
* Accent equivalents
*/
var _accent = {
from: "ãàáäâẽèéëêìíïîõòóöôùúüûñç",
to: "aaaaaeeeeeiiiiooooouuuunc"
};
/**
* #62 IE9 doesn't trigger "input" event when text gets removed (backspace, ctrl+x, etc)
* @private
*/
var _isIE9 = ~window.navigator.appVersion.indexOf("MSIE 9.");
/**
* #193 Clicking on a suggested option does not select it on IE10/11
* @private
*/
var _isIE10 = ~window.navigator.appVersion.indexOf("MSIE 10");
var _isIE11 = ~window.navigator.userAgent.indexOf("Trident")
? ~window.navigator.userAgent.indexOf("rv:11")
: false;
// SOURCE GROUP RESERVED WORDS: ajax, data, url
// SOURCE ITEMS RESERVED KEYS: group, display, data, matchedKey, compiled, href
/**
* @constructor
* Typeahead Class
*
* @param {object} node jQuery input object
* @param {object} options User defined options
*/
var Typeahead = function (node, options) {
this.rawQuery = node.val() || ""; // Unmodified input query
this.query = node.val() || ""; // Input query
this.selector = node[0].selector; // Typeahead instance selector (to reach from window.Typeahead[SELECTOR])
this.deferred = null; // Promise when "input" event in triggered, this.node.triggerHandler('input').then(() => {})
this.tmpSource = {}; // Temp var to preserve the source order for the searchResult function
this.source = {}; // The generated source kept in memory
this.dynamicGroups = []; // Store the source groups that are defined as dynamic
this.hasDynamicGroups = false; // Boolean if at least one of the groups has a dynamic source
this.generatedGroupCount = 0; // Number of groups generated, if limit reached the search can be done
this.groupBy = "group"; // This option will change according to filtering or custom grouping
this.groups = []; // Array of all the available groups, used to build the groupTemplate
this.searchGroups = []; // Array of groups to generate when Typeahead searches data
this.generateGroups = []; // Array of groups to generate when Typeahead requests data
this.requestGroups = []; // Array of groups to request via Ajax
this.result = []; // Results based on Source-query match (only contains the displayed elements)
this.tmpResult = {}; // Temporary object of results, before they get passed to the buildLayout function
this.groupTemplate = ""; // Result template at the {{group}} level
this.resultHtml = null; // HTML Results (displayed elements)
this.resultCount = 0; // Total results based on Source-query match
this.resultCountPerGroup = {}; // Total results based on Source-query match per group
this.options = options; // Typeahead options (Merged default & user defined)
this.node = node; // jQuery object of the Typeahead <input>
this.namespace =
"." +
this.helper.slugify.call(this, this.selector) +
_namespace; // Every Typeahead instance gets its own namespace for events
this.isContentEditable = typeof this.node.attr('contenteditable') !== "undefined"
&& this.node.attr('contenteditable') !== "false";
this.container = null; // Typeahead container, usually right after <form>
this.resultContainer = null; // Typeahead result container (html)
this.item = null; // Selected item
this.items = null; // Multiselect selected items
this.comparedItems = null; // Multiselect items stored for comparison
this.xhr = {}; // Ajax request(s) stack
this.hintIndex = null; // Numeric value of the hint index in the result list
this.filters = { // Filter list for searching, dropdown and dynamic(s)
dropdown: {}, // Dropdown menu if options.dropdownFilter is set
dynamic: {} // Checkbox / Radio / Select to filter the source data
};
this.dropdownFilter = {
static: [], // Objects that has a value
dynamic: []
};
this.dropdownFilterAll = null; // The last "all" definition
this.isDropdownEvent = false; // If a dropdownFilter is clicked, this will be true to trigger the callback
this.requests = {}; // Store the group:request instead of generating them every time
this.backdrop = {}; // The backdrop object
this.hint = {}; // The hint object
this.label = {}; // The label object
this.hasDragged = false; // Will cancel mouseend events if true
this.focusOnly = false; // Focus the input preventing any operations
this.displayEmptyTemplate // Display the empty template in the result list
this.__construct();
};
Typeahead.prototype = {
_validateCacheMethod: function (cache) {
var supportedCache = ["localStorage", "sessionStorage"],
supported;
if (cache === true) {
cache = "localStorage";
} else if (typeof cache === "string" && !~supportedCache.indexOf(cache)) {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "extendOptions()",
message: 'Invalid options.cache, possible options are "localStorage" or "sessionStorage"'
});
_debug.print();
}
// {/debug}
return false;
}
supported = typeof window[cache] !== "undefined";
try {
window[cache].setItem("typeahead", "typeahead");
window[cache].removeItem("typeahead");
} catch (e) {
supported = false;
}
return (supported && cache) || false;
},
extendOptions: function () {
this.options.cache = this._validateCacheMethod(this.options.cache);
if (this.options.compression) {
if (typeof LZString !== "object" || !this.options.cache) {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "extendOptions()",
message: "Missing LZString Library or options.cache, no compression will occur."
});
_debug.print();
}
// {/debug}
this.options.compression = false;
}
}
if (!this.options.maxLength || isNaN(this.options.maxLength)) {
this.options.maxLength = Infinity;
}
if (
typeof this.options.maxItem !== "undefined" && ~[0, false].indexOf(this.options.maxItem)
) {
this.options.maxItem = Infinity;
}
if (
this.options.maxItemPerGroup && !/^\d+$/.test(this.options.maxItemPerGroup)
) {
this.options.maxItemPerGroup = null;
}
if (this.options.display && !Array.isArray(this.options.display)) {
this.options.display = [this.options.display];
}
if (this.options.multiselect) {
this.items = [];
this.comparedItems = [];
if (typeof this.options.multiselect.matchOn === "string") {
this.options.multiselect.matchOn = [this.options.multiselect.matchOn];
}
}
if (this.options.group) {
if (!Array.isArray(this.options.group)) {
if (typeof this.options.group === "string") {
this.options.group = {
key: this.options.group
};
} else if (typeof this.options.group === "boolean") {
this.options.group = {
key: "group"
};
}
this.options.group.key = this.options.group.key || "group";
} else {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "extendOptions()",
message: "options.group must be a boolean|string|object as of 2.5.0"
});
_debug.print();
}
// {/debug}
}
}
if (this.options.highlight && !~["any", true].indexOf(this.options.highlight)) {
this.options.highlight = false;
}
if (
this.options.dropdownFilter &&
this.options.dropdownFilter instanceof Object
) {
if (!Array.isArray(this.options.dropdownFilter)) {
this.options.dropdownFilter = [this.options.dropdownFilter];
}
for (var i = 0, ii = this.options.dropdownFilter.length; i < ii; ++i) {
this.dropdownFilter[
this.options.dropdownFilter[i].value ? "static" : "dynamic"
].push(this.options.dropdownFilter[i]);
}
}
if (this.options.dynamicFilter && !Array.isArray(this.options.dynamicFilter)) {
this.options.dynamicFilter = [this.options.dynamicFilter];
}
if (this.options.accent) {
if (typeof this.options.accent === "object") {
if (
this.options.accent.from &&
this.options.accent.to &&
this.options.accent.from.length !== this.options.accent.to.length
) {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "extendOptions()",
message: 'Invalid "options.accent", from and to must be defined and same length.'
});
_debug.print();
}
// {/debug}
}
} else {
this.options.accent = _accent;
}
}
if (this.options.groupTemplate) {
this.groupTemplate = this.options.groupTemplate;
}
if (this.options.resultContainer) {
if (typeof this.options.resultContainer === "string") {
this.options.resultContainer = $(this.options.resultContainer);
}
if (
!(this.options.resultContainer instanceof $) || !this.options.resultContainer[0]
) {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "extendOptions()",
message: 'Invalid jQuery selector or jQuery Object for "options.resultContainer".'
});
_debug.print();
}
// {/debug}
} else {
this.resultContainer = this.options.resultContainer;
}
}
if (
this.options.group &&
this.options.group.key
) {
this.groupBy = this.options.group.key;
}
// Compatibility onClick callback
if (this.options.callback && this.options.callback.onClick) {
this.options.callback.onClickBefore = this.options.callback.onClick;
delete this.options.callback.onClick;
}
// Compatibility onNavigate callback
if (this.options.callback && this.options.callback.onNavigate) {
this.options.callback.onNavigateBefore = this.options.callback.onNavigate;
delete this.options.callback.onNavigate;
}
this.options = $.extend(true, {}, _options, this.options);
},
unifySourceFormat: function () {
this.dynamicGroups = [];
// source: ['item1', 'item2', 'item3']
if (Array.isArray(this.options.source)) {
this.options.source = {
group: {
data: this.options.source
}
};
}
// source: "http://www.test.com/url.json"
if (typeof this.options.source === "string") {
this.options.source = {
group: {
ajax: {
url: this.options.source
}
}
};
}
if (this.options.source.ajax) {
this.options.source = {
group: {
ajax: this.options.source.ajax
}
};
}
// source: {data: ['item1', 'item2'], url: "http://www.test.com/url.json"}
if (this.options.source.url || this.options.source.data) {
this.options.source = {
group: this.options.source
};
}
var group, groupSource, tmpAjax;
for (group in this.options.source) {
if (!this.options.source.hasOwnProperty(group)) continue;
groupSource = this.options.source[group];
// source: {group: "http://www.test.com/url.json"}
if (typeof groupSource === "string") {
groupSource = {
ajax: {
url: groupSource
}
};
}
// source: {group: {url: ["http://www.test.com/url.json", "json.path"]}}
tmpAjax = groupSource.url || groupSource.ajax;
if (Array.isArray(tmpAjax)) {
groupSource.ajax =
typeof tmpAjax[0] === "string"
? {
url: tmpAjax[0]
}
: tmpAjax[0];
groupSource.ajax.path = groupSource.ajax.path || tmpAjax[1] || null;
delete groupSource.url;
} else {
// source: {group: {url: {url: "http://www.test.com/url.json", method: "GET"}}}
// source: {group: {url: "http://www.test.com/url.json", dataType: "jsonp"}}
if (typeof groupSource.url === "object") {
groupSource.ajax = groupSource.url;
} else if (typeof groupSource.url === "string") {
groupSource.ajax = {
url: groupSource.url
};
}
delete groupSource.url;
}
if (!groupSource.data && !groupSource.ajax) {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "unifySourceFormat()",
arguments: JSON.stringify(this.options.source),
message: 'Undefined "options.source.' +
group +
'.[data|ajax]" is Missing - Typeahead dropped'
});
_debug.print();
}
// {/debug}
return false;
}
if (groupSource.display && !Array.isArray(groupSource.display)) {
groupSource.display = [groupSource.display];
}
groupSource.minLength =
typeof groupSource.minLength === "number"
? groupSource.minLength
: this.options.minLength;
groupSource.maxLength =
typeof groupSource.maxLength === "number"
? groupSource.maxLength
: this.options.maxLength;
groupSource.dynamic =
typeof groupSource.dynamic === "boolean" || this.options.dynamic;
if (groupSource.minLength > groupSource.maxLength) {
groupSource.minLength = groupSource.maxLength;
}
this.options.source[group] = groupSource;
if (this.options.source[group].dynamic) {
this.dynamicGroups.push(group);
}
groupSource.cache =
typeof groupSource.cache !== "undefined"
? this._validateCacheMethod(groupSource.cache)
: this.options.cache;
if (groupSource.compression) {
if (typeof LZString !== "object" || !groupSource.cache) {
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "unifySourceFormat()",
message: "Missing LZString Library or group.cache, no compression will occur on group: " +
group
});
_debug.print();
}
// {/debug}
groupSource.compression = false;
}
}
}
this.hasDynamicGroups =
this.options.dynamic || !!this.dynamicGroups.length;
return true;
},
init: function () {
this.helper.executeCallback.call(this, this.options.callback.onInit, [
this.node
]);
this.container = this.node.closest("." + this.options.selector.container);
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "init()",
//'arguments': JSON.stringify(this.options),
message: "OK - Typeahead activated on " + this.selector
});
_debug.print();
}
// {/debug}
},
delegateEvents: function () {
var scope = this,
events = [
"focus" + this.namespace,
"input" + this.namespace,
"propertychange" + this.namespace, // IE8 Fix
"keydown" + this.namespace,
"keyup" + this.namespace, // IE9 Fix
"search" + this.namespace,
"generate" + this.namespace
];
// #149 - Adding support for Mobiles
$("html")
.on("touchmove", function () {
scope.hasDragged = true;
})
.on("touchstart", function () {
scope.hasDragged = false;
});
this.node
.closest("form")
.on("submit", function (e) {
if (
scope.options.mustSelectItem &&
scope.helper.isEmpty(scope.item)
) {
e.preventDefault();
return;
}
if (!scope.options.backdropOnFocus) {
scope.hideLayout();
}
if (scope.options.callback.onSubmit) {
return scope.helper.executeCallback.call(
scope,
scope.options.callback.onSubmit,
[scope.node, this, scope.item || scope.items, e]
);
}
})
.on("reset", function () {
// #221 - Reset Typeahead on form reset.
// setTimeout to re-queue the `input.typeahead` event at the end
setTimeout(function () {
scope.node.trigger("input" + scope.namespace);
// #243 - minLength: 0 opens the Typeahead results
scope.hideLayout();
});
});
// IE8 fix
var preventNextEvent = false;
// IE10/11 fix
if (this.node.attr("placeholder") && (_isIE10 || _isIE11)) {
var preventInputEvent = true;
this.node.on("focusin focusout", function () {
preventInputEvent = !!(!this.value && this.placeholder);
});
this.node.on("input", function (e) {
if (preventInputEvent) {
e.stopImmediatePropagation();
preventInputEvent = false;
}
});
}
this.node
.off(this.namespace)
.on(events.join(" "), function (e, data) {
switch (e.type) {
case "generate":
scope.generateSource(Object.keys(scope.options.source));
break;
case "focus":
if (scope.focusOnly) {
scope.focusOnly = false;
break;
}
if (scope.options.backdropOnFocus) {
scope.buildBackdropLayout();
scope.showLayout();
}
if (scope.options.searchOnFocus && !scope.item) {
scope.deferred = $.Deferred();
scope.assignQuery();
scope.generateSource();
}
break;
case "keydown":
if (e.keyCode === 8
&& scope.options.multiselect
&& scope.options.multiselect.cancelOnBackspace
&& scope.query === ''
&& scope.items.length
) {
scope.cancelMultiselectItem(scope.items.length - 1, null, e);
} else if (e.keyCode && ~[9, 13, 27, 38, 39, 40].indexOf(e.keyCode)) {
preventNextEvent = true;
scope.navigate(e);
}
break;
case "keyup":
if (
_isIE9 &&
scope.node[0].value.replace(/^\s+/, "").toString().length <
scope.query.length
) {
scope.node.trigger("input" + scope.namespace);
}
break;
case "propertychange":
if (preventNextEvent) {
preventNextEvent = false;
break;
}
case "input":
scope.deferred = $.Deferred();
scope.assignQuery();
// #195 Trigger an onCancel event if the Typeahead is cleared
if (scope.rawQuery === "" && scope.query === "") {
e.originalEvent = data || {};
scope.helper.executeCallback.call(
scope,
scope.options.callback.onCancel,
[scope.node, e]
);
}
scope.options.cancelButton &&
scope.toggleCancelButtonVisibility();
if (
scope.options.hint &&
scope.hint.container &&
scope.hint.container.val() !== ""
) {
if (scope.hint.container.val().indexOf(scope.rawQuery) !== 0) {
scope.hint.container.val("");
if (scope.isContentEditable) {
scope.hint.container.text("");
}
}
}
if (scope.hasDynamicGroups) {
scope.helper.typeWatch(function () {
scope.generateSource();
}, scope.options.delay);
} else {
scope.generateSource();
}
break;
case "search":
scope.searchResult();
scope.buildLayout();
if (scope.result.length ||
(scope.searchGroups.length &&
scope.displayEmptyTemplate)
) {
scope.showLayout();
} else {
scope.hideLayout();
}
scope.deferred && scope.deferred.resolve();
break;
}
return scope.deferred && scope.deferred.promise();
});
if (this.options.generateOnLoad) {
this.node.trigger("generate" + this.namespace);
}
},
assignQuery: function () {
if (this.isContentEditable) {
this.rawQuery = this.node.text();
} else {
this.rawQuery = this.node.val().toString();
}
this.rawQuery = this.rawQuery.replace(/^\s+/, "");
if (this.rawQuery !== this.query) {
this.item = null;
this.query = this.rawQuery;
}
},
filterGenerateSource: function () {
this.searchGroups = [];
this.generateGroups = [];
if (this.focusOnly && !this.options.multiselect) return;
for (var group in this.options.source) {
if (!this.options.source.hasOwnProperty(group)) continue;
if (
this.query.length >= this.options.source[group].minLength &&
this.query.length <= this.options.source[group].maxLength
) {
this.searchGroups.push(group);
if (!this.options.source[group].dynamic && this.source[group]) {
continue;
}
this.generateGroups.push(group);
}
}
},
generateSource: function (generateGroups) {
this.filterGenerateSource();
if (Array.isArray(generateGroups) && generateGroups.length) {
this.generateGroups = generateGroups;
} else if (!this.generateGroups.length) {
this.node.trigger("search" + this.namespace);
return;
}
this.requestGroups = [];
this.generatedGroupCount = 0;
this.options.loadingAnimation && this.container.addClass("loading");
if (!this.helper.isEmpty(this.xhr)) {
for (var i in this.xhr) {
if (!this.xhr.hasOwnProperty(i)) continue;
this.xhr[i].abort();
}
this.xhr = {};
}
var scope = this,
group,
groupData,
groupSource,
cache,
compression,
dataInStorage,
isValidStorage;
for (var i = 0, ii = this.generateGroups.length; i < ii; ++i) {
group = this.generateGroups[i];
groupSource = this.options.source[group];
cache = groupSource.cache;
compression = groupSource.compression;
if (cache) {
dataInStorage = window[cache].getItem(
"TYPEAHEAD_" + this.selector + ":" + group
);
if (dataInStorage) {
if (compression) {
dataInStorage = LZString.decompressFromUTF16(dataInStorage);
}
isValidStorage = false;
try {
dataInStorage = JSON.parse(dataInStorage + "");
if (
dataInStorage.data &&
dataInStorage.ttl > new Date().getTime()
) {
this.populateSource(dataInStorage.data, group);
isValidStorage = true;
// {debug}
if (this.options.debug) {
_debug.log({
node: this.selector,
function: "generateSource()",
message: 'Source for group "' + group + '" found in ' + cache
});
_debug.print();
}
// {/debug}
} else {
window[cache].removeItem(
"TYPEAHEAD_" + this.selector + ":" + group
);
}
} catch (error) {
}
if (isValidStorage) continue;
}
}
if (groupSource.data && !groupSource.ajax) {
// #198 Add support for async data source
if (typeof groupSource.data === "function") {
groupData = groupSource.data.call(this);
if (Array.isArray(groupData)) {
scope.populateSource(groupData, group);
} else if (typeof groupData.promise === "function") {
(function (group) {
$.when(groupData).then(function (deferredData) {
if (deferredData && Array.isArray(deferredData)) {
scope.populateSource(deferredData, group);
}
});
})(group);
}
} else {
this.populateSource($.extend(true, [], groupSource.data), group);
}
continue;
}
if (groupSource.ajax) {
if (!this.requests[group]) {
this.requests[group] = this.generateRequestObject(group);
}
this.requestGroups.push(group);
}
}
if (this.requestGroups.length) {
this.handleRequests();
}
return !!this.generateGroups.length;
},
generateRequestObject: function (group) {
var scope = this,
groupSource = this.options.source[group];
var xhrObject = {
request: {
url: groupSource.ajax.url || null,
dataType: "json",
beforeSend: function (jqXHR, options) {
// Important to call .abort() in case of dynamic requests
scope.xhr[group] = jqXHR;
var beforeSend =
scope.requests[group].callback.beforeSend ||
groupSource.ajax.beforeSend;
typeof beforeSend === "function" &&
beforeSend.apply(null, arguments);
}
},
callback: {
beforeSend: null,
done: null,
fail: null,
then: null,
always: null
},
extra: {
path: groupSource.ajax.path || null,
group: group
},
validForGroup: [group]
};
if (typeof groupSource.ajax !== "function") {
if (groupSource.ajax instanceof Object) {
xhrObject = this.extendXhrObject(xhrObject, groupSource.ajax);
}
if (Object.keys(this.options.source).length > 1) {
for (var _group in this.requests) {
if (!this.requests.hasOwnProperty(_group)) continue;
if (this.requests[_group].isDuplicated) continue;
if (
xhrObject.request.url &&
xhrObject.request.url === this.requests[_group].request.url
) {
this.requests[_group].validForGroup.push(group);
xhrObject.isDuplicated = true;
delete xhrObject.validForGroup;
}
}
}
}
return xhrObject;
},
extendXhrObject: function (xhrObject, groupRequest) {
if (typeof groupRequest.callback === "object") {
xhrObject.callback = groupRequest.callback;
delete groupRequest.callback;