mirror of
https://github.com/devbridge/jQuery-Autocomplete.git
synced 2024-11-10 07:11:02 +00:00
768 lines
24 KiB
JavaScript
768 lines
24 KiB
JavaScript
/**
|
|
* Ajax Autocomplete for jQuery, version 1.2.8
|
|
* (c) 2013 Tomas Kirda
|
|
*
|
|
* Ajax Autocomplete for jQuery is freely distributable under the terms of an MIT-style license.
|
|
* For details, see the web site: https://github.com/devbridge/jQuery-Autocomplete
|
|
*
|
|
*/
|
|
|
|
/*jslint browser: true, white: true, plusplus: true */
|
|
/*global define, window, document, jQuery */
|
|
|
|
// Expose plugin as an AMD module if AMD loader is present:
|
|
(function (factory) {
|
|
'use strict';
|
|
if (typeof define === 'function' && define.amd) {
|
|
// AMD. Register as an anonymous module.
|
|
define(['jquery'], factory);
|
|
} else {
|
|
// Browser globals
|
|
factory(jQuery);
|
|
}
|
|
}(function ($) {
|
|
'use strict';
|
|
|
|
var
|
|
utils = (function () {
|
|
return {
|
|
escapeRegExChars: function (value) {
|
|
return value.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
|
|
},
|
|
createNode: function (containerClass) {
|
|
var div = document.createElement('div');
|
|
div.className = containerClass;
|
|
div.style.position = 'absolute';
|
|
div.style.display = 'none';
|
|
return div;
|
|
}
|
|
};
|
|
}()),
|
|
|
|
keys = {
|
|
ESC: 27,
|
|
TAB: 9,
|
|
RETURN: 13,
|
|
LEFT: 37,
|
|
UP: 38,
|
|
RIGHT: 39,
|
|
DOWN: 40
|
|
};
|
|
|
|
function Autocomplete(el, options) {
|
|
var noop = function () { },
|
|
that = this,
|
|
defaults = {
|
|
autoSelectFirst: false,
|
|
appendTo: 'body',
|
|
serviceUrl: null,
|
|
lookup: null,
|
|
onSelect: null,
|
|
width: 'auto',
|
|
minChars: 1,
|
|
maxHeight: 300,
|
|
deferRequestBy: 0,
|
|
params: {},
|
|
formatResult: Autocomplete.formatResult,
|
|
delimiter: null,
|
|
zIndex: 9999,
|
|
type: 'GET',
|
|
noCache: false,
|
|
onSearchStart: noop,
|
|
onSearchComplete: noop,
|
|
onSearchError: noop,
|
|
containerClass: 'autocomplete-suggestions',
|
|
tabDisabled: false,
|
|
dataType: 'text',
|
|
currentRequest: null,
|
|
lookupFilter: function (suggestion, originalQuery, queryLowerCase) {
|
|
return suggestion.value.toLowerCase().indexOf(queryLowerCase) !== -1;
|
|
},
|
|
paramName: 'query',
|
|
transformResult: function (response) {
|
|
return typeof response === 'string' ? $.parseJSON(response) : response;
|
|
}
|
|
};
|
|
|
|
// Shared variables:
|
|
that.element = el;
|
|
that.el = $(el);
|
|
that.suggestions = [];
|
|
that.badQueries = [];
|
|
that.selectedIndex = -1;
|
|
that.currentValue = that.element.value;
|
|
that.intervalId = 0;
|
|
that.cachedResponse = [];
|
|
that.onChangeInterval = null;
|
|
that.onChange = null;
|
|
that.isLocal = false;
|
|
that.suggestionsContainer = null;
|
|
that.options = $.extend({}, defaults, options);
|
|
that.classes = {
|
|
selected: 'autocomplete-selected',
|
|
suggestion: 'autocomplete-suggestion'
|
|
};
|
|
that.hint = null;
|
|
that.hintValue = '';
|
|
that.selection = null;
|
|
|
|
// Initialize and set options:
|
|
that.initialize();
|
|
that.setOptions(options);
|
|
}
|
|
|
|
Autocomplete.utils = utils;
|
|
|
|
$.Autocomplete = Autocomplete;
|
|
|
|
Autocomplete.formatResult = function (suggestion, currentValue) {
|
|
var pattern = '(' + utils.escapeRegExChars(currentValue) + ')';
|
|
|
|
return suggestion.value.replace(new RegExp(pattern, 'gi'), '<strong>$1<\/strong>');
|
|
};
|
|
|
|
Autocomplete.prototype = {
|
|
|
|
killerFn: null,
|
|
|
|
initialize: function () {
|
|
var that = this,
|
|
suggestionSelector = '.' + that.classes.suggestion,
|
|
selected = that.classes.selected,
|
|
options = that.options,
|
|
container;
|
|
|
|
// Remove autocomplete attribute to prevent native suggestions:
|
|
that.element.setAttribute('autocomplete', 'off');
|
|
|
|
that.killerFn = function (e) {
|
|
if ($(e.target).closest('.' + that.options.containerClass).length === 0) {
|
|
that.killSuggestions();
|
|
that.disableKillerFn();
|
|
}
|
|
};
|
|
|
|
that.suggestionsContainer = Autocomplete.utils.createNode(options.containerClass);
|
|
|
|
container = $(that.suggestionsContainer);
|
|
|
|
container.appendTo(options.appendTo);
|
|
|
|
// Only set width if it was provided:
|
|
if (options.width !== 'auto') {
|
|
container.width(options.width);
|
|
}
|
|
|
|
// Listen for mouse over event on suggestions list:
|
|
container.on('mouseover.autocomplete', suggestionSelector, function () {
|
|
that.activate($(this).data('index'));
|
|
});
|
|
|
|
// Deselect active element when mouse leaves suggestions container:
|
|
container.on('mouseout.autocomplete', function () {
|
|
that.selectedIndex = -1;
|
|
container.children('.' + selected).removeClass(selected);
|
|
});
|
|
|
|
// Listen for click event on suggestions list:
|
|
container.on('click.autocomplete', suggestionSelector, function () {
|
|
that.select($(this).data('index'));
|
|
});
|
|
|
|
that.fixPosition();
|
|
|
|
that.fixPositionCapture = function () {
|
|
if (that.visible) {
|
|
that.fixPosition();
|
|
}
|
|
};
|
|
|
|
$(window).on('resize.autocomplete', that.fixPositionCapture);
|
|
|
|
that.el.on('keydown.autocomplete', function (e) { that.onKeyPress(e); });
|
|
that.el.on('keyup.autocomplete', function (e) { that.onKeyUp(e); });
|
|
that.el.on('blur.autocomplete', function () { that.onBlur(); });
|
|
that.el.on('focus.autocomplete', function () { that.onFocus(); });
|
|
that.el.on('change.autocomplete', function (e) { that.onKeyUp(e); });
|
|
},
|
|
|
|
onFocus: function () {
|
|
var that = this;
|
|
that.fixPosition();
|
|
if (that.options.minChars <= that.el.val().length) {
|
|
that.onValueChange();
|
|
}
|
|
},
|
|
|
|
onBlur: function () {
|
|
this.enableKillerFn();
|
|
},
|
|
|
|
setOptions: function (suppliedOptions) {
|
|
var that = this,
|
|
options = that.options;
|
|
|
|
$.extend(options, suppliedOptions);
|
|
|
|
that.isLocal = $.isArray(options.lookup);
|
|
|
|
if (that.isLocal) {
|
|
options.lookup = that.verifySuggestionsFormat(options.lookup);
|
|
}
|
|
|
|
// Adjust height, width and z-index:
|
|
$(that.suggestionsContainer).css({
|
|
'max-height': options.maxHeight + 'px',
|
|
'width': options.width + 'px',
|
|
'z-index': options.zIndex
|
|
});
|
|
},
|
|
|
|
clearCache: function () {
|
|
this.cachedResponse = [];
|
|
this.badQueries = [];
|
|
},
|
|
|
|
clear: function () {
|
|
this.clearCache();
|
|
this.currentValue = '';
|
|
this.suggestions = [];
|
|
},
|
|
|
|
disable: function () {
|
|
var that = this;
|
|
that.disabled = true;
|
|
if (that.currentRequest) {
|
|
that.currentRequest.abort();
|
|
}
|
|
},
|
|
|
|
enable: function () {
|
|
this.disabled = false;
|
|
},
|
|
|
|
fixPosition: function () {
|
|
var that = this,
|
|
offset,
|
|
styles;
|
|
|
|
// Don't adjsut position if custom container has been specified:
|
|
if (that.options.appendTo !== 'body') {
|
|
return;
|
|
}
|
|
|
|
offset = that.el.offset();
|
|
|
|
styles = {
|
|
top: (offset.top + that.el.outerHeight()) + 'px',
|
|
left: offset.left + 'px'
|
|
};
|
|
|
|
if (that.options.width === 'auto') {
|
|
styles.width = (that.el.outerWidth() - 2) + 'px';
|
|
}
|
|
|
|
$(that.suggestionsContainer).css(styles);
|
|
},
|
|
|
|
enableKillerFn: function () {
|
|
var that = this;
|
|
$(document).on('click.autocomplete', that.killerFn);
|
|
},
|
|
|
|
disableKillerFn: function () {
|
|
var that = this;
|
|
$(document).off('click.autocomplete', that.killerFn);
|
|
},
|
|
|
|
killSuggestions: function () {
|
|
var that = this;
|
|
that.stopKillSuggestions();
|
|
that.intervalId = window.setInterval(function () {
|
|
that.hide();
|
|
that.stopKillSuggestions();
|
|
}, 50);
|
|
},
|
|
|
|
stopKillSuggestions: function () {
|
|
window.clearInterval(this.intervalId);
|
|
},
|
|
|
|
isCursorAtEnd: function () {
|
|
var that = this,
|
|
valLength = that.el.val().length,
|
|
selectionStart = that.element.selectionStart,
|
|
range;
|
|
|
|
if (typeof selectionStart === 'number') {
|
|
return selectionStart === valLength;
|
|
}
|
|
if (document.selection) {
|
|
range = document.selection.createRange();
|
|
range.moveStart('character', -valLength);
|
|
return valLength === range.text.length;
|
|
}
|
|
return true;
|
|
},
|
|
|
|
onKeyPress: function (e) {
|
|
var that = this;
|
|
|
|
// If suggestions are hidden and user presses arrow down, display suggestions:
|
|
if (!that.disabled && !that.visible && e.which === keys.DOWN && that.currentValue) {
|
|
that.suggest();
|
|
return;
|
|
}
|
|
|
|
if (that.disabled || !that.visible) {
|
|
return;
|
|
}
|
|
|
|
switch (e.which) {
|
|
case keys.ESC:
|
|
that.el.val(that.currentValue);
|
|
that.hide();
|
|
break;
|
|
case keys.RIGHT:
|
|
if (that.hint && that.options.onHint && that.isCursorAtEnd()) {
|
|
that.selectHint();
|
|
break;
|
|
}
|
|
return;
|
|
case keys.TAB:
|
|
if (that.hint && that.options.onHint) {
|
|
that.selectHint();
|
|
return;
|
|
}
|
|
// Fall through to RETURN
|
|
case keys.RETURN:
|
|
if (that.selectedIndex === -1) {
|
|
that.hide();
|
|
return;
|
|
}
|
|
that.select(that.selectedIndex);
|
|
if (e.which === keys.TAB && that.options.tabDisabled === false) {
|
|
return;
|
|
}
|
|
break;
|
|
case keys.UP:
|
|
that.moveUp();
|
|
break;
|
|
case keys.DOWN:
|
|
that.moveDown();
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
// Cancel event if function did not return:
|
|
e.stopImmediatePropagation();
|
|
e.preventDefault();
|
|
},
|
|
|
|
onKeyUp: function (e) {
|
|
var that = this;
|
|
|
|
if (that.disabled) {
|
|
return;
|
|
}
|
|
|
|
switch (e.which) {
|
|
case keys.UP:
|
|
case keys.DOWN:
|
|
return;
|
|
}
|
|
|
|
clearInterval(that.onChangeInterval);
|
|
|
|
if (that.currentValue !== that.el.val()) {
|
|
that.findBestHint();
|
|
if (that.options.deferRequestBy > 0) {
|
|
// Defer lookup in case when value changes very quickly:
|
|
that.onChangeInterval = setInterval(function () {
|
|
that.onValueChange();
|
|
}, that.options.deferRequestBy);
|
|
} else {
|
|
that.onValueChange();
|
|
}
|
|
}
|
|
},
|
|
|
|
onValueChange: function () {
|
|
var that = this,
|
|
q;
|
|
|
|
if (that.selection) {
|
|
that.selection = null;
|
|
(that.options.onInvalidateSelection || $.noop)();
|
|
}
|
|
|
|
clearInterval(that.onChangeInterval);
|
|
that.currentValue = that.el.val();
|
|
|
|
q = that.getQuery(that.currentValue);
|
|
that.selectedIndex = -1;
|
|
|
|
if (q.length < that.options.minChars) {
|
|
that.hide();
|
|
} else {
|
|
that.getSuggestions(q);
|
|
}
|
|
},
|
|
|
|
getQuery: function (value) {
|
|
var delimiter = this.options.delimiter,
|
|
parts;
|
|
|
|
if (!delimiter) {
|
|
return $.trim(value);
|
|
}
|
|
parts = value.split(delimiter);
|
|
return $.trim(parts[parts.length - 1]);
|
|
},
|
|
|
|
getSuggestionsLocal: function (query) {
|
|
var that = this,
|
|
queryLowerCase = query.toLowerCase(),
|
|
filter = that.options.lookupFilter;
|
|
|
|
return {
|
|
suggestions: $.grep(that.options.lookup, function (suggestion) {
|
|
return filter(suggestion, query, queryLowerCase);
|
|
})
|
|
};
|
|
},
|
|
|
|
getSuggestions: function (q) {
|
|
var response,
|
|
that = this,
|
|
options = that.options,
|
|
serviceUrl = options.serviceUrl;
|
|
|
|
response = that.isLocal ? that.getSuggestionsLocal(q) : that.cachedResponse[q];
|
|
|
|
if (response && $.isArray(response.suggestions)) {
|
|
that.suggestions = response.suggestions;
|
|
that.suggest();
|
|
} else if (!that.isBadQuery(q)) {
|
|
options.params[options.paramName] = q;
|
|
if (options.onSearchStart.call(that.element, options.params) === false) {
|
|
return;
|
|
}
|
|
if ($.isFunction(options.serviceUrl)) {
|
|
serviceUrl = options.serviceUrl.call(that.element, q);
|
|
}
|
|
if (that.currentRequest) {
|
|
that.currentRequest.abort();
|
|
}
|
|
that.currentRequest = $.ajax({
|
|
url: serviceUrl,
|
|
data: options.ignoreParams ? null : options.params,
|
|
type: options.type,
|
|
dataType: options.dataType
|
|
}).done(function (data) {
|
|
that.currentRequest = null;
|
|
that.processResponse(data, q);
|
|
options.onSearchComplete.call(that.element, q, data);
|
|
}).fail(function (jqXHR, textStatus, errorThrown) {
|
|
options.onSearchError.call(that.element, q, jqXHR, textStatus, errorThrown);
|
|
});
|
|
}
|
|
},
|
|
|
|
isBadQuery: function (q) {
|
|
var badQueries = this.badQueries,
|
|
i = badQueries.length;
|
|
|
|
while (i--) {
|
|
if (q.indexOf(badQueries[i]) === 0) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
hide: function () {
|
|
var that = this;
|
|
that.visible = false;
|
|
that.selectedIndex = -1;
|
|
$(that.suggestionsContainer).hide();
|
|
that.signalHint(null);
|
|
},
|
|
|
|
suggest: function () {
|
|
if (this.suggestions.length === 0) {
|
|
this.hide();
|
|
return;
|
|
}
|
|
|
|
var that = this,
|
|
formatResult = that.options.formatResult,
|
|
value = that.getQuery(that.currentValue),
|
|
className = that.classes.suggestion,
|
|
classSelected = that.classes.selected,
|
|
container = $(that.suggestionsContainer),
|
|
beforeRender = that.options.beforeRender,
|
|
html = '',
|
|
width;
|
|
|
|
// Build suggestions inner HTML:
|
|
$.each(that.suggestions, function (i, suggestion) {
|
|
html += '<div class="' + className + '" data-index="' + i + '">' + formatResult(suggestion, value) + '</div>';
|
|
});
|
|
|
|
// If width is auto, adjust width before displaying suggestions,
|
|
// because if instance was created before input had width, it will be zero.
|
|
// Also it adjusts if input width has changed.
|
|
// -2px to account for suggestions border.
|
|
if (that.options.width === 'auto') {
|
|
width = that.el.outerWidth() - 2;
|
|
container.width(width > 0 ? width : 300);
|
|
}
|
|
|
|
container.html(html);
|
|
|
|
// Select first value by default:
|
|
if (that.options.autoSelectFirst) {
|
|
that.selectedIndex = 0;
|
|
container.children().first().addClass(classSelected);
|
|
}
|
|
|
|
if ($.isFunction(beforeRender)) {
|
|
beforeRender.call(that.element, container);
|
|
}
|
|
|
|
container.show();
|
|
that.visible = true;
|
|
|
|
that.findBestHint();
|
|
},
|
|
|
|
findBestHint: function () {
|
|
var that = this,
|
|
value = that.el.val().toLowerCase(),
|
|
bestMatch = null;
|
|
|
|
if (!value) {
|
|
return;
|
|
}
|
|
|
|
$.each(that.suggestions, function (i, suggestion) {
|
|
var foundMatch = suggestion.value.toLowerCase().indexOf(value) === 0;
|
|
if (foundMatch) {
|
|
bestMatch = suggestion;
|
|
}
|
|
return !foundMatch;
|
|
});
|
|
|
|
that.signalHint(bestMatch);
|
|
},
|
|
|
|
signalHint: function (suggestion) {
|
|
var hintValue = '',
|
|
that = this;
|
|
if (suggestion) {
|
|
hintValue = that.currentValue + suggestion.value.substr(that.currentValue.length);
|
|
}
|
|
if (that.hintValue !== hintValue) {
|
|
that.hintValue = hintValue;
|
|
that.hint = suggestion;
|
|
(this.options.onHint || $.noop)(hintValue);
|
|
}
|
|
},
|
|
|
|
verifySuggestionsFormat: function (suggestions) {
|
|
// If suggestions is string array, convert them to supported format:
|
|
if (suggestions.length && typeof suggestions[0] === 'string') {
|
|
return $.map(suggestions, function (value) {
|
|
return { value: value, data: null };
|
|
});
|
|
}
|
|
|
|
return suggestions;
|
|
},
|
|
|
|
processResponse: function (response, originalQuery) {
|
|
var that = this,
|
|
options = that.options,
|
|
result = options.transformResult(response, originalQuery);
|
|
|
|
result.suggestions = that.verifySuggestionsFormat(result.suggestions);
|
|
|
|
// Cache results if cache is not disabled:
|
|
if (!options.noCache) {
|
|
that.cachedResponse[result[options.paramName]] = result;
|
|
if (result.suggestions.length === 0) {
|
|
that.badQueries.push(result[options.paramName]);
|
|
}
|
|
}
|
|
|
|
// Display suggestions only if returned query matches current value:
|
|
if (originalQuery === that.getQuery(that.currentValue)) {
|
|
that.suggestions = result.suggestions;
|
|
that.suggest();
|
|
}
|
|
},
|
|
|
|
activate: function (index) {
|
|
var that = this,
|
|
activeItem,
|
|
selected = that.classes.selected,
|
|
container = $(that.suggestionsContainer),
|
|
children = container.children();
|
|
|
|
container.children('.' + selected).removeClass(selected);
|
|
|
|
that.selectedIndex = index;
|
|
|
|
if (that.selectedIndex !== -1 && children.length > that.selectedIndex) {
|
|
activeItem = children.get(that.selectedIndex);
|
|
$(activeItem).addClass(selected);
|
|
return activeItem;
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
selectHint: function () {
|
|
var that = this,
|
|
i = $.inArray(that.hint, that.suggestions);
|
|
|
|
that.select(i);
|
|
},
|
|
|
|
select: function (i) {
|
|
var that = this;
|
|
that.hide();
|
|
that.onSelect(i);
|
|
},
|
|
|
|
moveUp: function () {
|
|
var that = this;
|
|
|
|
if (that.selectedIndex === -1) {
|
|
return;
|
|
}
|
|
|
|
if (that.selectedIndex === 0) {
|
|
$(that.suggestionsContainer).children().first().removeClass(that.classes.selected);
|
|
that.selectedIndex = -1;
|
|
that.el.val(that.currentValue);
|
|
that.findBestHint();
|
|
return;
|
|
}
|
|
|
|
that.adjustScroll(that.selectedIndex - 1);
|
|
},
|
|
|
|
moveDown: function () {
|
|
var that = this;
|
|
|
|
if (that.selectedIndex === (that.suggestions.length - 1)) {
|
|
return;
|
|
}
|
|
|
|
that.adjustScroll(that.selectedIndex + 1);
|
|
},
|
|
|
|
adjustScroll: function (index) {
|
|
var that = this,
|
|
activeItem = that.activate(index),
|
|
offsetTop,
|
|
upperBound,
|
|
lowerBound,
|
|
heightDelta = 25;
|
|
|
|
if (!activeItem) {
|
|
return;
|
|
}
|
|
|
|
offsetTop = activeItem.offsetTop;
|
|
upperBound = $(that.suggestionsContainer).scrollTop();
|
|
lowerBound = upperBound + that.options.maxHeight - heightDelta;
|
|
|
|
if (offsetTop < upperBound) {
|
|
$(that.suggestionsContainer).scrollTop(offsetTop);
|
|
} else if (offsetTop > lowerBound) {
|
|
$(that.suggestionsContainer).scrollTop(offsetTop - that.options.maxHeight + heightDelta);
|
|
}
|
|
|
|
that.el.val(that.getValue(that.suggestions[index].value));
|
|
that.signalHint(null);
|
|
},
|
|
|
|
onSelect: function (index) {
|
|
var that = this,
|
|
onSelectCallback = that.options.onSelect,
|
|
suggestion = that.suggestions[index];
|
|
|
|
that.currentValue = that.getValue(suggestion.value);
|
|
that.el.val(that.currentValue);
|
|
that.signalHint(null);
|
|
that.suggestions = [];
|
|
that.selection = suggestion;
|
|
|
|
if ($.isFunction(onSelectCallback)) {
|
|
onSelectCallback.call(that.element, suggestion);
|
|
}
|
|
},
|
|
|
|
getValue: function (value) {
|
|
var that = this,
|
|
delimiter = that.options.delimiter,
|
|
currentValue,
|
|
parts;
|
|
|
|
if (!delimiter) {
|
|
return value;
|
|
}
|
|
|
|
currentValue = that.currentValue;
|
|
parts = currentValue.split(delimiter);
|
|
|
|
if (parts.length === 1) {
|
|
return value;
|
|
}
|
|
|
|
return currentValue.substr(0, currentValue.length - parts[parts.length - 1].length) + value;
|
|
},
|
|
|
|
dispose: function () {
|
|
var that = this;
|
|
that.el.off('.autocomplete').removeData('autocomplete');
|
|
that.disableKillerFn();
|
|
$(window).off('resize.autocomplete', that.fixPositionCapture);
|
|
$(that.suggestionsContainer).remove();
|
|
}
|
|
};
|
|
|
|
// Create chainable jQuery plugin:
|
|
$.fn.autocomplete = function (options, args) {
|
|
var dataKey = 'autocomplete';
|
|
// If function invoked without argument return
|
|
// instance of the first matched element:
|
|
if (arguments.length === 0) {
|
|
return this.first().data(dataKey);
|
|
}
|
|
|
|
return this.each(function () {
|
|
var inputElement = $(this),
|
|
instance = inputElement.data(dataKey);
|
|
|
|
if (typeof options === 'string') {
|
|
if (instance && typeof instance[options] === 'function') {
|
|
instance[options](args);
|
|
}
|
|
} else {
|
|
// If instance already exists, destroy it:
|
|
if (instance && instance.dispose) {
|
|
instance.dispose();
|
|
}
|
|
instance = new Autocomplete(this, options);
|
|
inputElement.data(dataKey, instance);
|
|
}
|
|
});
|
|
};
|
|
}));
|