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| /*
* Completer is a free script that implements an auto-completion system using AJAX technologies
*
* Copyright (C) 2014 Lebleu Steve <dev@e-lless.be>
*
* URL : http://scripts.e-lless.be/completer/
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Creative Commons Licence.
*
*/
/**
* Implement JSON.parse de-serialization
*
* @type @exp;JSON
*/
var JSON = JSON || {};
JSON.parse = JSON.parse || function (str) {
if (str === "")
{
str = '""';
}
eval("var p =" + str + ";");
return p;
};
/**
* IE <= 8 document.getElementsByClassName polyfill
*
* @param {string} className
* @returns {NodeList}
*/
if (typeof document.getElementsByClassName!='function') {
document.getElementsByClassName = function() {
var elms = document.getElementsByTagName('*');
var ei = new Array();
for (i=0;i<elms.length;i++) {
if (elms[i].getAttribute('class')) {
ecl = elms[i].getAttribute('class').split(' ');
for (j=0;j<ecl.length;j++) {
if (ecl[j].toLowerCase() == arguments[0].toLowerCase()) {
ei.push(elms[i]);
}
}
} else if (elms[i].className) {
ecl = elms[i].className.split(' ');
for (j=0;j<ecl.length;j++) {
if (ecl[j].toLowerCase() == arguments[0].toLowerCase()) {
ei.push(elms[i]);
}
}
}
}
return ei;
}
}
/**
* IE <= 8 addEventListener polyfill
*
* @param {HTMLElement} element
* @param {string} event
* @param {function} func
* @returns {void}
*/
function AddEvent(element, event, func) {
if(element.addEventListener)
{
element.addEventListener(event, func, false);
}
else
{
element.attachEvent('on' + event, func);
}
}
/**
* Polyfill for XHR implements
*
* @returns {XMLHttpRequest.XMLHttpRequest|Boolean|XMLHttpRequest|ActiveXObject|ActiveXObject.ActiveXObject}
*/
function GetXmlHttpRequest() {
var xhr;
if(window.XMLHttpRequest)
{
return xhr = new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
var versions = [
"Msxml2.XMLHTTP.6.0",
"Msxml2.XMLHTTP.3.0",
"Msxml2.XMLHTTP",
"Microsoft.XMLHTTP"
];
for(var i in versions)
{
try
{
return xhr = new ActiveXObject(versions[i]);
}
catch (e){}
}
}
else
{
alert("Votre navigateur ne supporte pas l'objet XMLHttpRequest");
return xhr = false;
}
}
// TODO setTimeout sur l'affichage des résultats : masquer après x secondes ?
if(typeof Completer === 'undefined')
{
var Completer = {
ConfigPath: 'php/configurer.php',
PHPPath: 'php/completer.php',
Properties: [],
Suggestions: [],
Pointer: -1,
PreviousValue: '',
Focused: null,
Input: null,
Result: null,
Response: {},
/**
* Init elements & events
*
* @returns {undefined}
*/
Init: function() {
Completer.SetProperties();
var result = document.createElement('div');
result.id = "result";
result.className = "form--lightsearch__result";
this.Result = result;
var searcher = document.getElementById('searcher');
searcher.appendChild(result);
this.Input = document.getElementById('autocomplete');
this.EventHandlers.KeyboardNavigation();
this.EventHandlers.HideResults(this.Result);
},
EventHandlers: {
/**
* Gestion of keyboard
*
* @returns {undefined}
*/
KeyboardNavigation: function() {
AddEvent(Completer.Input, 'keyup', function(e) {
e = e || window.event;
var keycode = e.keyCode;
// Up/Down into Results
if(keycode === 38 || keycode === 40)
{
Completer.Navigation(keycode);
}
// Write the selected item into Input
else if (keycode === 13)
{
Completer.InsertSuggestion();
}
else
{
if(Completer.Input.value !== Completer.PreviousValue)
{
Completer.DisplaySuggestions();
}
}
});
},
/**
* Hide set of results after click on body
*
* @params {HTMLElement}
* @returns {undefined}
*/
HideResults: function(elm) {
AddEvent(document.body, 'click', function() {
elm.style.display = 'none';
});
},
/**
* Set click event on Suggestions div's
*
* @param {string}
* @returns {undefined}
*/
ClickableSuggestion: function(nameClass) {
Completer.Suggestions = document.getElementsByClassName(nameClass);
if(typeof Completer.Suggestions !== 'undefined')
{
var numberOfSuggestions = Completer.Suggestions.length;
if(numberOfSuggestions !== 0 && numberOfSuggestions !== null)
{
for(var i = 0; i < numberOfSuggestions; i++)
{
AddEvent(Completer.Suggestions[i], 'click', (function(i) {
return function() {
Completer.Focused = Completer.Suggestions[i];
Completer.InsertSuggestion();
};
})(i));
}
}
}
}
},
/**
* Set properties of the screenview
*
* @returns {undefined}
*/
SetProperties: function() {
var xhr = GetXmlHttpRequest();
xhr.open('GET', Completer.ConfigPath, true);
xhr.onreadystatechange = function() {
if(xhr.readyState === 4 && xhr.status === 200)
{
var response = xhr.responseText;
Completer.Properties = response.split(', ');
}
};
xhr.send(null);
},
/**
* Gestion of navigation into results of the request
*
* @param {int} keycode
* @returns {undefined}
*/
Navigation: function(keycode) {
if(Completer.Pointer >= -1 && Completer.Pointer <= Completer.Suggestions.length - 1)
{
// Pointer out of data set, before first element
if(Completer.Pointer === -1)
{
if(keycode === 40)
{
Completer.SetFocus(keycode);
}
}
// Pointer in data set, at last element
else if (Completer.Pointer === Completer.Suggestions.length - 1)
{
if(keycode === 38)
{
Completer.SetFocus(keycode);
}
}
// Pointer into data set
else
{
Completer.SetFocus(keycode);
}
}
},
/**
* Init XHR object, send the AJAX request and display Result
* If you use another datas set, modify only this method
*
* @returns {undefined}
*/
DisplaySuggestions: function() {
Completer.Result.style.display = 'block';
Completer.Pointer = -1;
var text = "",
xhr = GetXmlHttpRequest();
xhr.open('POST', Completer.PHPPath, true);
xhr.setRequestHeader('content-type', 'application/x-www-form-urlencoded');
xhr.onreadystatechange = function() {
if(xhr.readyState === 4 && xhr.status === 200)
{
var response = JSON.parse(xhr.responseText);
if(response !== null)
{
Completer.Response = response;
var properties = Completer.Properties.length,
responseLength = response.length;
for(var i = 0; i < responseLength ; i++)
{
if(typeof response[i] !== 'undefined')
{
var cls;
i + 1 === responseLength ? cls = 'last' : cls = '';
text += "<div id=\"" + i + "\" class=\"item--result " + cls + "\">\n";
for(var j = 0; j < properties; j++)
{
text += "<span class=\"data-" + j + "\">" + response[i][j] + "</span>\n";
}
text += "</div>\n";
}
}
}
else
{
text = "<div class=\"item--result\">Not found</div>";
}
}
else if(xhr.readyState === 4 && xhr.status !== 200)
{
text = "<div class=\"item--result\">Error</div>";
}
Completer.Result.innerHTML = text;
Completer.EventHandlers.ClickableSuggestion('item--result');
};
xhr.send('requestExpression=' + Completer.Input.value);
},
/**
* Insert a suggestion into Input file
*
* @returns {undefined}
*/
InsertSuggestion: function() {
var id;
Completer.Focused !== null ? id = Completer.Focused.id : id = 0;
Completer.Input.value = Completer.Response[id][0]; // Update this line with anonymous Property
Completer.Pointer = -1;
Completer.Result.style.display = 'none';
},
/**
* Set focus params for keyboard Navigation
*
* @param {int} keycode of the Navigation (38/40)
* @returns {undefined}
*/
SetFocus: function(keycode) {
if(keycode === 40)
{
if(this.Pointer !== -1)
{
Completer.RemoveFocus();
}
Completer.Pointer++;
Completer.GetFocus();
}
else if(keycode === 38)
{
Completer.RemoveFocus();
Completer.Pointer--;
if(Completer.Pointer !== -1)
{
Completer.GetFocus();
}
}
},
/**
* Get the focus on one element & set Focused property
*
* @returns {undefined}
*/
GetFocus: function() {
Completer.Focused = Completer.Suggestions[Completer.Pointer];
Completer.Suggestions[Completer.Pointer].className += ' focus';
},
/**
* Remove the focus on one element & set Focused property
*
* @returns {undefined}
*/
RemoveFocus: function() {
Completer.Focused = null;
Completer.Suggestions[Completer.Pointer].className = 'item--result';
}
};
}
else
{
console.log('This namespace already exists !');
}
Completer.Init(); |
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