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| items = null;
function documentationLoad() {
var req = new XMLHttpRequest();
req.open("GET", "Documentation.html");
req.onreadystatechange = function() {
if (req.readyState === 4) {
if (req.status === 200) {
xmlDoc=req.responseXML;
x=xmlDoc.getElementsByTagName("h1");
txt=x[0].nodeValue;
document.getElementById("documentation").innerHTML=txt;
} else {
handleError(req);
}
}
};
req.send();
}
/*Cette fonction est appelée lors du clic sur le bouton Valider. Elle récupère l'URL saisie et la tronque
car pour utiliser le podcast on passe par un proxy afin de contourner les règles du SOP. Ce proxy ajoute ensuite
des en-têtes CORS qui demandent l'autorisation au serveur d'envoyer des requêtes en Get. En l'occurence, l'adresse de la requête sera l'adresse du proxy
suivie de l'adresse du site hébergeant le podcast, comme par exemple https://cors-anywhere.herokuapp.com.
La fonction modifie l'adresse de la page en ajoutant en GET podcasturl=url_du_podcast#0. En effet par défaut on lira le premier podcast */
function validatePodcastSelection(){
url = document.getElementById("inputurl").value;
url = url.replace("http://", "");
url = url.replace("www.", "");
window.location = "index.html?podcasturl=" + url + "#0";
}
function loadPodcastXML(url){
var podcasturl = document.getElementById("podcasturl");
podcasturl.textContent = "URL du podcast : " + url;
//url = "radiofrance-podcast.net/podcast09/rss_11591.xml";
//http://cdn3-europe1.new2.ladmedia.fr/var/exports/podcasts/sound/le-grand-direct.xml
//http://rss.allocine.fr/fauxraccord/ipod
proxy = "http://cors-anywhere.herokuapp.com";
var req = new XMLHttpRequest();
req.open("GET", proxy+"/"+url, true);
req.setRequestHeader('Origin', 'http://liris.cnrs.fr');
req.onreadystatechange = function() {
console.log(req);
if (req.readyState === 4) {
if (req.status === 200) {
handleLoadSuccess(req);
} else {
handleLoadError(req);
}
}
};
req.send();
}
function handleLoadSuccess(req){
var objetXML = req.responseXML;
var channel = objetXML.getElementsByTagName("channel");
items = channel[0].getElementsByTagName("item");
var table = document.getElementById("entries");
var tableHTML = "";
for (var i=0; i<items.length; i++){
var item = items[i];
var title = item.getElementsByTagName("title")[0].textContent;
var link = "<a href=#" + i + ">" + title + "</a>";
tableHTML += "<tr><td>" + link + "</td></tr>";
}
table.innerHTML = tableHTML;
window.addEventListener("hashchange",locationHashChanged, false);
locationHashChanged();
}
function handleLoadError(req){
console.log(req);
}
function locationHashChanged(){
var index = location.hash !== '' ? location.hash.substr(1) : 0;
playItem(index);
}
function playItem(index){
if (items!=null && index<items.length){
var playeraudio = document.getElementById("playeraudio");
var playervideo = document.getElementById("playervideo");
playeraudio.pause();
playervideo.pause();
var item = items[index];
var itemtitle = document.getElementById("itemtitle");
itemtitle.innerHTML = "Titre du média en cours : " + item.getElementsByTagName("title")[0].textContent;
//TODO: date, description etc
var enclosure = item.getElementsByTagName("enclosure")[0];
var type = enclosure.getAttribute("type");
if (type.search("audio") != -1){
playeraudio.style.display = "block";
playervideo.style.display = "none";
playeraudio.src = enclosure.getAttribute("url");
playeraudio.play();
}
else{
playeraudio.style.display = "none";
playervideo.style.display = "block";
playervideo.src = enclosure.getAttribute("url");
playervideo.play();
}
}
}
function loadPodcastXMLFromWindowLocation(){
if (location.search) {
var parameter = "podcasturl=";
var index = location.search.search(parameter);
if (index != -1){
var url = location.search.substring(index + parameter.length);
var inputURL = document.getElementById("inputurl");
inputURL.value = url;
loadPodcastXML(url);
}
}
}
window.addEventListener("load", function(){
document.getElementById("podcastButton").addEventListener("click", validatePodcastSelection);
document.getElementById("documentationButton").addEventListener("click", documentationLoad);
loadPodcastXMLFromWindowLocation();
}); |
