/*
---
description: A plugin for enabling autocomplete of a text input or textarea.
authors:
- Fábio Miranda Costa
requires:
- Core/Class.Extras
- Core/Element.Event
- Core/Element.Style
- More/Element.Forms
license: MIT-style license
provides: [Meio.Autocomplete]
...
*/
(function(global, $){
var browser = Browser; // better compression and faster
// Custom Events
// thanks Jan Kassens
Object.append(Element.NativeEvents, {
'paste': 2, 'input': 2
});
Element.Events.paste = {
base : (browser.opera || (browser.firefox && browser.version < 3)) ? 'input' : 'paste',
condition: function(e){
this.fireEvent('paste', e, 1);
return false;
}
};
// the key event that repeats
Element.Events.keyrepeat = {
base : (browser.firefox || browser.opera) ? 'keypress' : 'keydown',
condition: Function.from(true)
};
// Autocomplete itself
var Meio = global.Meio || {};
var globalCache;
var keysThatDontChangeValueOnKeyUp = {
9: 1, // tab
16: 1, // shift
17: 1, // control
18: 1, // alt
224: 1, // command (meta onkeypress)
91: 1, // command (meta onkeydown)
37: 1, // left
38: 1, // up
39: 1, // right
40: 1 // down
};
var encode = function(str){
return str.replace(/"/g, '"').replace(/'/g, ''');
};
Meio.Widget = new Class({
initialize: function(){
this.elements = {};
},
addElement: function(name, obj){
this.elements[name] = obj;
},
addEventToElement: function(name, eventName, event){
this.elements[name].addEvent(eventName, event.bind(this));
},
addEventsToElement: function(name, events){
for (var eventName in events){
this.addEventToElement(name, eventName, events[eventName]);
}
},
attach: function(){
for (var element in this.elements){
this.elements[element].attach();
}
},
detach: function(){
for (var element in this.elements){
this.elements[element].detach();
}
},
destroy: function(){
for (var element in this.elements){
this.elements[element] && this.elements[element].destroy();
}
}
});
Meio.Autocomplete = new Class({
Extends: Meio.Widget,
Implements: [Options, Events],
options: {
delay: 200,
minChars: 0,
cacheLength: 20,
selectOnTab: true,
maxVisibleItems: 10,
cacheType: 'shared', // 'shared' or 'own'
filter: {
/*
its posible to pass the filters directly or by passing a type and optionaly a path.
filter: function(text, data){}
formatMatch: function(text, data, i){}
formatItem: function(text, data){}
or
type: 'startswith' or 'contains' // can be any defined on the Meio.Autocomplete.Filter object
path: 'a.b.c' // path to the text value on each object thats contained on the data array
*/
},
/*
onNoItemToList: function(elements){},
onSelect: function(elements, value){},
onDeselect: function(elements){},
*/
onSelect: function(elements, value) {
tematicaSelectata = value.value;
document.location = 'http://www.romexpo.ro/index.php?pageid=20&urllink=program_expozitional.php&limba2=ro&filtru_events_keyword='+encodeURI(tematicaSelectata);
},
fieldOptions: {}, // see Element options
listOptions: {}, // see List options
requestOptions: {}, // see DataRequest options
urlOptions: {} // see URL options
},
initialize: function(input, data, options, listInstance){
this.parent();
this.setOptions(options);
this.active = 0;
this.filters = Meio.Autocomplete.Filter.get(this.options.filter);
this.addElement('list', listInstance || new Meio.Element.List(this.options.listOptions));
this.addListEvents();
this.addElement('field', new Meio.Element.Field(input, this.options.fieldOptions));
this.addFieldEvents();
this.addSelectEvents();
this.attach();
this.initCache();
this.initData(data);
},
addFieldEvents: function(){
this.addEventsToElement('field', {
'beforeKeyrepeat': function(e){
this.active = 1;
var e_key = e.key, list = this.elements.list;
if (e_key == 'up' || e_key == 'down' || (e_key == 'enter' && list.showing)) e.preventDefault();
},
'delayedKeyrepeat': function(e){
var e_key = e.key, field = this.elements.field;
field.keyPressControl[e_key] = true;
switch (e_key){
case 'up': case 'down':
this.focusItem(e_key);
break;
case 'enter':
this.setInputValue();
break;
case 'tab':
if (this.options.selectOnTab) this.setInputValue();
field.keyPressControl[e_key] = false; // tab blurs the input so the keyup event wont happen at the same input you made a keydown
break;
case 'esc':
this.elements.list.hide();
break;
default:
this.setupList();
}
this.oldInputedText = field.node.get('value');
},
'keyup': function(e){
var field = this.elements.field;
if (!keysThatDontChangeValueOnKeyUp[e.code]){
if (!field.keyPressControl[e.key]) this.setupList();
field.keyPressControl[e.key] = false;
}
},
'focus': function(){
/* modificari ionut pentru afisare lista cand click pe ea / focus */
this.active = 1;
var list = this.elements.list;
this.setupList();
list.positionNextTo(this.elements.field.node);
},
'click': function(){
if (++this.active > 2 && !this.elements.list.showing){
this.forceSetupList();
}
},
'blur': function(e){
this.active = 0;
var list = this.elements.list;
if (list.shouldNotBlur){
this.elements.field.node.setCaretPosition('end');
list.shouldNotBlur = false;
if (list.focusedItem) list.hide();
} else {
list.hide();
}
},
'paste': function(){
return this.setupList();
}
});
},
addListEvents: function(){
this.addEventsToElement('list', {
'mousedown': function(e){
if (this.active && !e.dontHide) this.setInputValue();
}
});
},
update: function(){
var data = this.data, list = this.elements.list;
var cacheKey = data.getKey(), cached = this.cache.get(cacheKey), html;
if (cached){
html = cached.html;
this.itemsData = cached.data;
} else {
data = data.get();
var itemsHtml = [], itemsData = [], classes = list.options.classes, text = this.inputedText;
var filter = this.filters.filter, formatMatch = this.filters.formatMatch, formatItem = this.filters.formatItem;
for (var row, i = 0, n = 0; row = data[i++];) if (filter.call(this, text, row)){
itemsHtml.push(
'',
formatItem.call(this, text, row, n),
''
);
itemsData.push(row);
n++;
}
html = itemsHtml.join('');
this.cache.set(cacheKey, {html: html, data: itemsData});
this.itemsData = itemsData;
}
list.focusedItem = null;
this.fireEvent('deselect', [this.elements]);
list.list.set('html', html);
if (this.options.maxVisibleItems) list.applyMaxHeight(this.options.maxVisibleItems);
},
setupList: function(){
this.inputedText = this.elements.field.node.get('value');
if (this.inputedText !== this.oldInputedText){
this.forceSetupList(this.inputedText);
} else {
this.elements.list.hide();
}
return true;
},
forceSetupList: function(inputedText){
inputedText = inputedText || this.elements.field.node.get('value');
if (inputedText.length >= this.options.minChars){
clearInterval(this.prepareTimer);
this.prepareTimer = this.data.prepare.delay(this.options.delay, this.data, this.inputedText);
}
},
dataReady: function(){
this.update();
if (this.onUpdate){
this.onUpdate();
this.onUpdate = null;
}
var list = this.elements.list;
if (list.list.get('html')){
if (this.active) list.show();
} else {
this.fireEvent('noItemToList', [this.elements]);
list.hide();
}
},
setInputValue: function(){
var list = this.elements.list;
if (list.focusedItem){
var text = list.focusedItem.get('title');
this.elements.field.node.set('value', text);
var index = list.focusedItem.get('data-index');
this.fireEvent('select', [this.elements, this.itemsData[index], text, index]);
}
list.hide();
},
focusItem: function(direction){
var list = this.elements.list;
if (list.showing){
list.focusItem(direction);
} else {
this.forceSetupList();
this.onUpdate = function(){ list.focusItem(direction); };
}
},
addSelectEvents: function(){
this.addEvents({
select: function(elements){
elements.field.addClass('selected');
},
deselect: function(elements){
elements.field.removeClass('selected');
}
});
},
initData: function(data){
this.data = (typeOf(data) == 'string') ?
new Meio.Autocomplete.Data.Request(data, this.cache, this.elements.field, this.options.requestOptions, this.options.urlOptions) :
new Meio.Autocomplete.Data(data, this.cache);
this.data.addEvent('ready', this.dataReady.bind(this));
},
initCache: function(){
var cacheLength = this.options.cacheLength;
if (this.options.cacheType == 'shared'){
this.cache = globalCache;
this.cache.setMaxLength(cacheLength);
} else { // 'own'
this.cache = new Meio.Autocomplete.Cache(cacheLength);
}
},
refreshCache: function(cacheLength){
this.cache.refresh();
this.cache.setMaxLength(cacheLength || this.options.cacheLength);
},
refreshAll: function(cacheLength, urlOptions){
// TODO, do you really need to refresh the url? see a better way of doing this
this.refreshCache(cacheLength);
this.data.refreshKey(urlOptions);
}
});
// This is the same autocomplete class but it acts like a normal select element.
// When you select an option from the autocomplete it will set the value of a given element (valueField)
// with the return of the valueFilter.
// if the syncAtInit option is set to true, it will synchonize the value of the autocomplete with the corresponding data
// from the valueField's value.
// to understand better see the user specs.
Meio.Autocomplete.Select = new Class({
Extends: Meio.Autocomplete,
options: {
syncName: 'id', // if falsy it wont sync at start
valueField: null,
valueFilter: function(data){
return data.id;
}
},
// overwritten
initialize: function(input, data, options, listInstance){
this.parent(input, data, options, listInstance);
this.valueField = $(this.options.valueField);
if (!this.valueField) return;
this.syncWithValueField(data);
},
syncWithValueField: function(data){
var value = this.getValueFromValueField();
if (value && this.options.syncName){
this.addParameter(data);
this.addDataReadyEvent(value);
this.data.prepare(this.elements.field.node.get('value'));
} else {
this.addValueFieldEvents();
}
},
addValueFieldEvents: function(){
this.addEvents({
'select': function(elements, data){
this.valueField.set('value', this.options.valueFilter.call(this, data));
},
'deselect': function(elements){
this.valueField.set('value', '');
}
});
},
addParameter: function(data){
this.parameter = {
name: this.options.syncName,
value: function(){
return this.valueField.value;
}.bind(this)
};
if (this.data.url) this.data.url.addParameter(this.parameter);
},
addDataReadyEvent: function(value){
var self = this;
var runOnce = function(){
self.addValueFieldEvents();
var values = this.get();
for (var i = values.length; i--;){
if (self.options.valueFilter.call(self, values[i]) == value){
var text = self.filters.formatMatch.call(self, '', values[i], 0);
self.elements.field.node.set('value', text);
self.fireEvent('select', [self.elements, values[i], text, i]);
break;
}
}
if (this.url) this.url.removeParameter(self.parameter);
this.removeEvent('ready', runOnce);
};
this.data.addEvent('ready', runOnce);
},
getValueFromValueField: function(){
return this.valueField.get('value');
}
});
// Transforms a select on an autocomplete field
Meio.Autocomplete.Select.One = new Class({
Extends: Meio.Autocomplete.Select,
options: {
filter: {
path: 'text' // path to the text value on each object thats contained on the data array
}
},
//overwritten
initialize: function(select, options, listInstance){
this.select = $(select);
this.replaceSelect();
this.parent(this.field, this.createDataArray(), Object.merge(options || {}, {
valueField: this.select,
valueFilter: function(data){ return data.value; }
}), listInstance);
},
replaceSelect: function(){
var selectedOption = this.select.getSelected()[0];
this.field = new Element('input', {type: 'text'});
var optionValue = selectedOption.get('value');
if (optionValue || optionValue === 0) this.field.set('value', selectedOption.get('html'));
this.select.setStyle('display', 'none');
this.field.inject(this.select, 'after');
},
createDataArray: function(){
var selectOptions = this.select.options, data = [];
for(var i = 0, selectOption, optionValue; selectOption = selectOptions[i++];){
optionValue = selectOption.value;
if (optionValue || optionValue === 0) data.push({value: optionValue, text: selectOption.innerHTML});
}
return data;
},
addValueFieldEvents: function(){
this.addEvents({
'select': function(elements, data, text, index){
var option = this.valueField.getElement('option[value="' + this.options.valueFilter.call(this, data) + '"]');
if (option) option.selected = true;
},
'deselect': function(elements){
var option = this.valueField.getSelected()[0];
if (option) option.selected = false;
}
});
},
getValueFromValueField: function(){
return this.valueField.getSelected()[0].get('value');
}
});
Meio.Element = new Class({
Implements: [Events],
initialize: function(node){
this.setNode(node);
this.createBoundEvents();
this.attach();
},
setNode: function(node){
this.node = node ? $(node) || $$(node)[0] : this.render();
},
createBoundEvents: function(){
this.bound = {};
this.boundEvents.each(function(evt){
this.bound[evt] = function(e){
this.fireEvent('before' + evt.capitalize(), e);
this[evt] && this[evt](e);
this.fireEvent(evt, e);
return true;
}.bind(this);
}, this);
},
attach: function(){
for (var e in this.bound){
this.node.addEvent(e, this.bound[e]);
}
},
detach: function(){
for (var e in this.bound){
this.node.removeEvent(e, this.bound[e]);
}
},
addClass: function(type){
this.node.addClass(this.options.classes[type]);
},
removeClass: function(type){
this.node.removeClass(this.options.classes[type]);
},
toElement: function(){
this.node;
},
render: function(){}
});
Meio.Element.Field = new Class({
Extends: Meio.Element,
Implements: [Options],
options: {
classes: {
loading: 'ma-loading',
selected: 'ma-selected'
}
},
initialize: function(field, options){
this.keyPressControl = {};
this.boundEvents = ['paste', 'focus', 'blur', 'click', 'keyup', 'keyrepeat'];
if (browser.ie6) this.boundEvents.push('keypress'); // yeah super ugly, but what can be awesome with ie?
this.setOptions(options);
this.parent(field);
$(global).addEvent('unload', function(){
if (this.node) this.node.set('autocomplete', 'on'); // if autocomplete is off when you reload the page the input value gets erased
}.bind(this));
},
setNode: function(element){
this.parent(element);
this.node.set('autocomplete', 'off');
},
// this let me get the value of the input on keydown and keypress
keyrepeat: function(e){
clearInterval(this.keyrepeatTimer);
this.keyrepeatTimer = this._keyrepeat.delay(1, this, e);
},
_keyrepeat: function(e){
this.fireEvent('delayedKeyrepeat', e);
},
destroy: function(){
this.detach();
this.node.removeAttribute('autocomplete');
},
// ie6 only, uglyness
// this fix the form being submited on the press of the enter key
keypress: function(e){
if (e.key == 'enter') this.bound.keyrepeat(e);
}
});
Meio.Element.List = new Class({
Extends: Meio.Element,
Implements: [Options],
options: {
width: 'field', // you can pass any other value settable by set('width') to the list container
classes: {
container: 'ma-container',
hover: 'ma-hover',
odd: 'ma-odd',
even: 'ma-even'
}
},
initialize: function(options){
this.boundEvents = ['mousedown', 'mouseover'];
this.setOptions(options);
this.parent();
this.focusedItem = null;
},
applyMaxHeight: function(maxVisibleItems){
var listChildren = this.list.childNodes;
var node = listChildren[maxVisibleItems - 1] || (listChildren.length ? listChildren[listChildren.length - 1] : null);
if (!node) return;
node = $(node);
// uggly hack to fix the height of the autocomplete list
for (var i = 2; i--;) this.node.setStyle('height', node.getCoordinates(this.list).bottom);
},
mouseover: function(e){
var item = this.getItemFromEvent(e), hoverClass = this.options.classes.hover;
if (!item) return true;
if (this.focusedItem) this.focusedItem.removeClass(hoverClass);
item.addClass(hoverClass);
this.focusedItem = item;
this.fireEvent('focusItem', [this.focusedItem]);
},
mousedown: function(e){
e.preventDefault();
this.shouldNotBlur = true;
if (!(this.focusedItem = this.getItemFromEvent(e))){
e.dontHide = true;
return true;
}
this.focusedItem.removeClass(this.options.classes.hover);
},
focusItem: function(direction){
var hoverClass = this.options.classes.hover, newFocusedItem;
if (this.focusedItem){
if ((newFocusedItem = this.focusedItem[direction == 'up' ? 'getPrevious' : 'getNext']())){
this.focusedItem.removeClass(hoverClass);
newFocusedItem.addClass(hoverClass);
this.focusedItem = newFocusedItem;
this.scrollFocusedItem(direction);
}
} else {
if ((newFocusedItem = this.list.getFirst())){
newFocusedItem.addClass(hoverClass);
this.focusedItem = newFocusedItem;
}
}
},
scrollFocusedItem: function(direction){
var focusedItemCoordinates = this.focusedItem.getCoordinates(this.list),
scrollTop = this.node.scrollTop;
if (direction == 'down'){
var delta = focusedItemCoordinates.bottom - this.node.getStyle('height').toInt();
if ((delta - scrollTop) > 0){
this.node.scrollTop = delta;
}
} else {
var top = focusedItemCoordinates.top;
if (scrollTop && scrollTop > top){
this.node.scrollTop = top;
}
}
},
getItemFromEvent: function(e){
var target = e.target;
while (target && target.tagName.toLowerCase() != 'li'){
if (target === this.node) return null;
target = target.parentNode;
}
return $(target);
},
render: function(){
var node = new Element('div', {'class': this.options.classes.container});
if (node.bgiframe) node.bgiframe({top: 0, left: 0});
this.list = new Element('ul').inject(node);
$(document.body).grab(node);
return node;
},
positionNextTo: function(fieldNode){
var width = this.options.width, listNode = this.node;
var elPosition = fieldNode.getCoordinates();
listNode.setStyle('width', width == 'field' ? fieldNode.getWidth().toInt() - listNode.getStyle('border-left-width').toInt() - listNode.getStyle('border-right-width').toInt() : width);
listNode.setPosition({x: elPosition.left, y: elPosition.bottom});
},
show: function(){
this.node.scrollTop = 0;
this.node.setStyle('visibility', 'visible');
this.showing = true;
},
hide: function(){
this.showing = false;
this.node.setStyle('visibility', 'hidden');
}
});
Meio.Autocomplete.Filter = {
filters: {},
get: function(options){
var type = options.type, keys = (options.path || '').split('.');
var filters = (type && this.filters[type]) ? this.filters[type](this, keys) : options;
return Object.merge(this.defaults(keys), filters);
},
define: function(name, options){
this.filters[name] = options;
},
defaults: function(keys){
var self = this;
return {
filter: function(text, data){
return text ? self._getValueFromKeys(data, keys).test(new RegExp(text.escapeRegExp(), 'i')) : true;
},
formatMatch: function(text, data){
return self._getValueFromKeys(data, keys);
},
formatItem: function(text, data, i){
return text ? self._getValueFromKeys(data, keys).replace(new RegExp('(' + text.escapeRegExp() + ')', 'gi'), '$1') : self._getValueFromKeys(data, keys);
}
};
},
_getValueFromKeys: function(obj, keys){
var key, value = obj;
for (var i = 0; key = keys[i++];) value = value[key];
return value;
}
};
Meio.Autocomplete.Filter.define('contains', function(self, keys){return {};});
Meio.Autocomplete.Filter.define('startswith', function(self, keys){
return {
filter: function(text, data){
return text ? self._getValueFromKeys(data, keys).test(new RegExp('^' + text.escapeRegExp(), 'i')) : true;
}
};
});
Meio.Autocomplete.Data = new Class({
Implements: [Options, Events],
initialize: function(data, cache){
this._cache = cache;
this.data = data;
this.dataString = JSON.encode(this.data);
},
get: function(){
return this.data;
},
getKey: function(){
return this.cachedKey;
},
prepare: function(text){
this.cachedKey = this.dataString + (text || '');
this.fireEvent('ready');
},
cache: function(key, data){
this._cache.set(key, data);
},
refreshKey: function(){}
});
Meio.Autocomplete.Data.Request = new Class({
Extends: Meio.Autocomplete.Data,
options: {
noCache: true,
formatResponse: function(jsonResponse){
return jsonResponse;
}
},
initialize: function(url, cache, element, options, urlOptions){
this.setOptions(options);
this.rawUrl = url;
this._cache = cache;
this.element = element;
this.urlOptions = urlOptions;
this.refreshKey();
this.createRequest();
},
prepare: function(text){
this.cachedKey = this.url.evaluate(text);
if (this._cache.has(this.cachedKey)){
this.fireEvent('ready');
} else {
this.request.send({url: this.cachedKey});
}
},
createRequest: function(){
var self = this;
this.request = new Request.JSON(this.options);
this.request.addEvents({
request: function(){
self.element.addClass('loading');
},
complete: function(){
self.element.removeClass('loading');
},
success: function(jsonResponse){
self.data = self.options.formatResponse(jsonResponse);
self.fireEvent('ready');
}
});
},
refreshKey: function(urlOptions){
urlOptions = Object.merge(this.urlOptions, {url: this.rawUrl}, urlOptions || {});
this.url = new Meio.Autocomplete.Data.Request.URL(urlOptions.url, urlOptions);
}
});
Meio.Autocomplete.Data.Request.URL = new Class({
Implements: [Options],
options: {
queryVarName: 'q',
extraParams: null,
max: 20
},
initialize: function(url, options){
this.setOptions(options);
this.rawUrl = url;
this.url = url;
this.url += this.url.contains('?') ? '&' : '?';
this.dynamicExtraParams = [];
var params = Array.from(this.options.extraParams);
for (var i = params.length; i--;){
this.addParameter(params[i]);
}
if (this.options.max) this.addParameter('limit=' + this.options.max);
},
evaluate: function(text){
text = text || '';
var params = this.dynamicExtraParams, url = [];
url.push(this.options.queryVarName + '=' + encodeURIComponent(text));
for (var i = params.length; i--;){
url.push(encodeURIComponent(params[i].name) + '=' + encodeURIComponent(Function.from(params[i].value)()));
}
return this.url + url.join('&');
},
addParameter: function(param){
if (param.nodeType == 1 || typeOf(param.value) == 'function'){
this.dynamicExtraParams.push(param);
} else {
this.url += ((typeOf(param) == 'string') ? param : encodeURIComponent(param.name) + '=' + encodeURIComponent(param.value)) + '&';
}
},
// TODO remove non dynamic parameters
removeParameter: function(param){
this.dynamicExtraParams.erase(param);
}
});
Meio.Autocomplete.Cache = new Class({
initialize: function(maxLength){
this.refresh();
this.setMaxLength(maxLength);
},
set: function(key, value){
if (!this.cache[key]){
if (this.getLength() >= this.maxLength){
var keyToRemove = this.pos.shift();
this.cache[keyToRemove] = null;
delete this.cache[keyToRemove];
}
this.cache[key] = value;
this.pos.push(key);
}
return this;
},
get: function(key){
return this.cache[key || ''] || null;
},
has: function(key){
return !!this.get(key);
},
getLength: function(){
return this.pos.length;
},
refresh: function(){
this.cache = {};
this.pos = [];
},
setMaxLength: function(maxLength){
this.maxLength = Math.max(maxLength, 1);
}
});
globalCache = new Meio.Autocomplete.Cache();
global.Meio = Meio;
})(this, document.id || $);