469 lines
14 KiB
JavaScript
469 lines
14 KiB
JavaScript
/*
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* $Id$
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* Javascript for playlist.html
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*
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* Copyright (C) 2005 Anders Betnér (andbe611@users.sourceforge.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Detta script finns att hämta på http://www.jojoxx.net och
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får användas fritt så länge som dessa rader står kvar. */
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function DataDumper(obj,n,prefix){
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var str=""; prefix=(prefix)?prefix:""; n=(n)?n+1:1; var ind=""; for(var i=0;i<n;i++){ ind+=" "; }
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if(typeof(obj)=="string"){
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str+=ind+prefix+"String:\""+obj+"\"\n";
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} else if(typeof(obj)=="number"){
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str+=ind+prefix+"Number:"+obj+"\n";
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} else if(typeof(obj)=="function"){
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str+=ind+prefix+"Function:"+obj+"\n";
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} else if(typeof(obj) == 'boolean') {
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str+=ind+prefix+"Boolean:" + obj + "\n";
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} else {
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var type="Array";
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for(var i in obj){ type=(type=="Array"&&i==parseInt(i))?"Array":"Object" }
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str+=ind+prefix+type+"[\n";
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if(type=="Array"){
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for(var i in obj){ str+=DataDumper(obj[i],n,i+"=>"); }
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} else {
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for(var i in obj){ str+=DataDumper(obj[i],n,i+"=>"); }
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}
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str+=ind+"]\n";
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}
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return str;
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}
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//var g_req;
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var g_requestor;
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var g_selectedGenres = Array();
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var g_selectedAlbums = Array();
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var g_selectedArtists = Array();
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var baseUrl = window.location.toString();
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baseUrl = baseUrl.substr(0,baseUrl.length-13);
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String.prototype.myEncodeURI = function () {
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s = encodeURI(this);
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s = s.replace(/\'/,'%27');
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return s.replace(/&/,'%26');
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};
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Requestor = function(baseUrl) {
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g_requestor = this;
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this.req = ''; // holds the request
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this.responseHandler;
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this.baseUrl = baseUrl;
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this.que = Array();
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// All browsers but IE
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if (window.XMLHttpRequest) {
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this.req = new XMLHttpRequest();
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// MS IE
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} else if (window.ActiveXObject) {
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this.req = new ActiveXObject("Microsoft.XMLHTTP");
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}
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this.busy = false;
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};
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Requestor.prototype.setResponseHandler = function(resp) {
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this.responseHandler = resp;
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};
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Requestor.prototype.addRequest = function(url) {
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if (this.busy) {
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this.que.push(url);
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} else {
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this._openRequest(url);
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}
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};
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Requestor.prototype._openRequest = function(url) {
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this.busy = true;
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if (url.search(/\?/)> -1) {
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url += '&output=xml';
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} else {
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url += '?output=xml';
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}
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this.req.open('get',this.baseUrl+url,true);
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this.req.onreadystatechange = Requestor_handleRequest;
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this.req.send(null);
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};
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Requestor_handleRequest = function() {
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// readystate 4 means the whole document is loaded
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if (4 == g_requestor.req.readyState) {
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// Only try to parse the response if we got
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// ok from the server
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if (200 == g_requestor.req.status) {
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// send the recieved document off to the handler
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g_requestor.responseHandler(g_requestor.req.responseXML);
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}
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// Check if there are requests qued up
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if (g_requestor.que.length > 0) {
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// Just to be able to pull ourseves up by our boot straps
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window.setTimeout(Requestor_queChecker,5);
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return;
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} else {
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g_requestor.busy = false;
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}
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}
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};
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function Requestor_queChecker() {
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if (url = g_requestor.que.shift()) {
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g_requestor._openRequest(url);
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}
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}
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function response(xmldoc) {
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if ('daap.databaseplaylists' == xmldoc.firstChild.nodeName) {
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el = document.getElementById('source');
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addPlaylists(el,xmldoc);
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} else if ('daap.databasebrowse' == xmldoc.firstChild.nodeName) {
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// Ok we have response from a browse query
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switch (xmldoc.firstChild.childNodes[3].nodeName) {
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case 'daap.browsegenrelisting':
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el = document.getElementById('genre');
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addOptions(el,'genre',xmldoc);
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break;
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case 'daap.browseartistlisting':
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el = document.getElementById('artist');
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addOptions(el,'artist',xmldoc);
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break;
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case 'daap.browsealbumlisting':
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el = document.getElementById('album');
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addOptions(el,'album',xmldoc);
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// All other boxes are updated, now get the songs
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getSongs();
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break;
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default:
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// We got something else back...
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}
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} else if ('daap.databasesongs' == xmldoc.firstChild.nodeName) {
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// Songlist
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addSongs(xmldoc);
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}
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}
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function init() {
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req = new Requestor(baseUrl);
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req.setResponseHandler(response);
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req.addRequest('databases/1/containers');
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req.addRequest('databases/1/browse/genres');
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req.addRequest('databases/1/browse/artists');
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req.addRequest('databases/1/browse/albums');
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el = document.getElementById('source');
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el.addEventListener('change',playlistSelect,true);
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el = document.getElementById('genre');
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el.addEventListener('change',genreSelect,true);
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el = document.getElementById('artist');
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el.addEventListener('change',artistSelect,true);
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el = document.getElementById('album');
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el.addEventListener('change',albumSelect,true);
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}
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function addOptions(el,label,xmldoc) {
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while(el.hasChildNodes()) {
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el.removeChild(el.firstChild);
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}
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itemCnt = xmldoc.getElementsByTagName('dmap.specifiedtotalcount').item(0).textContent;
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if (parseInt(itemCnt) > 1) {
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plural = 's';
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} else {
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plural = '';
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}
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option = document.createElement('option');
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option.value = '1';
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option.selected = false;
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option.appendChild(document.createTextNode('All ('+itemCnt+' '+label +plural+')'));
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el.appendChild(option);
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items = xmldoc.getElementsByTagName('dmap.listingitem');
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selectAll = true;
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for (i=0; i<items.length; i++) {
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option = document.createElement('option');
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itemName = items[i].textContent;
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option.value = itemName;
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switch (label) {
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case 'genre':
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if (g_selectedGenres[itemName]) {
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option.selected = true;
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selectAll = false;
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}
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break;
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case 'artist':
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if (g_selectedArtists[itemName]) {
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option.selected = true;
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selectAll = false;
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}
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break;
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case 'album':
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if (g_selectedAlbums[itemName]) {
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option.selected = true;
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selectAll = false;
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}
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default: // if we get here something is wrong
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// silently ignore it
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}
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//###FIXME do some kind of itelligent truncation of the string
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option.appendChild(document.createTextNode(itemName.substr(0,30)));
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el.appendChild(option);
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}
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if (selectAll) {
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// clear the global selections arrays
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el.options[0].selected = true;
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switch (label) {
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case 'genre':
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g_selectedGenres = Array();
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break;
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case 'artist':
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g_selectedArtists = Array();
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break;
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case 'album':
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g_selectedAlbums = Array();
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break;
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default:
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// Can't get here
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}
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} else {
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el.options[0].selected = false;
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}
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}
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function addPlaylists(el,xmldoc) {
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//items = xmldoc.getElementsByTagName('dmap.listingitem');
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list = xmldoc.childNodes[0].childNodes[4];
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// Start on 1 since the first node is the name of the daap server
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for (i=1; i < list.childNodes.length; i++) {
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option = document.createElement('option');
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listNumber = list.childNodes[i].childNodes[0].textContent;
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listName = list.childNodes[i].childNodes[2].textContent;
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option.appendChild(document.createTextNode(listName));
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option.setAttribute('value',listNumber);
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el.appendChild(option);
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}
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}
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function playlistSelect(event) {
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table = document.getElementById('songs');
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tableBody = removeRows(table);
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playlistNumber = document.getElementById('source').value;
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browse = document.getElementById('browse');
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if (1 == playlistNumber) {
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browse.style.display = 'block';
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} else {
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browse.style.display = 'none';
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}
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g_req.open('get',baseUrl + 'databases/1/containers/' + playlistNumber +
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'/items?meta=dmap.itemname,daap.songalbum,daap.songartist,daap.songgenre,daap.songtime&output=xml',false);
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g_req.send(null);
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items = g_req.responseXML.getElementsByTagName('dmap.listingitem');
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className = 'odd';
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for (i=0; i < items.length; i++) {
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// Have to check if the tag really was returned from the server
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if (song = items[i].getElementsByTagName('dmap.itemname').item(0)) {
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song = song.textContent;
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} else {
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song = '';
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}
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time = ''; //items[i].getElementsByTagName('daap.songtime').item(0).textContent;
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if (artist = items[i].getElementsByTagName('daap.songartist').item(0)) {
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artist = artist.textContent;
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} else {
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artist = '';
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}
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if (album = items[i].getElementsByTagName('daap.songalbum').item(0)) {
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album = album.textContent;
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} else {
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album = '';
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}
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if (genre = items[i].getElementsByTagName('daap.songgenre').item(0)) {
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genre = genre.textContent;
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} else {
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genre = '';
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}
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if ('odd' == className) {
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className = 'even';
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} else {
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className = 'odd';
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}
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addRow(tableBody,className,song,time,artist,album,genre);
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}
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}
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function addRow(tbody,className,song,time,artist,album,genre) {
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row = document.createElement("tr");
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row.setAttribute('class',className);
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cell = document.createElement("td");
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cell.appendChild(document.createTextNode(song));
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row.appendChild(cell);
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cell = document.createElement("td");
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cell.appendChild(document.createTextNode(time));
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row.appendChild(cell);
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cell = document.createElement("td");
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//###FIXME do some kind of itelligent truncation of the string
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cell.appendChild(document.createTextNode(artist.substring(0,30)));
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row.appendChild(cell);
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cell = document.createElement("td");
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cell.appendChild(document.createTextNode(album));
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row.appendChild(cell);
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cell = document.createElement("td");
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cell.appendChild(document.createTextNode(genre));
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row.appendChild(cell);
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tbody.appendChild(row);
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}
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function removeRows(table) {
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tableBody = table.getElementsByTagName('tbody').item(0);
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table.removeChild(tableBody);
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tableBody = document.createElement('tbody');
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tableBody.setAttribute('class','mytbody');
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table.appendChild(tableBody);
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return tableBody;
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}
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function genreSelect(event) {
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selectObject = event.target;
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if (selectObject.options[0].selected) {
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filter = '';
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g_selectedGenres = Array();
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//###FIXME must dselect all others
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} else {
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filter = Array();
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//###FIXME if there is just the all genre there will be an error here
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for (i=1; i<selectObject.options.length; i++) {
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genre = selectObject.options[i].value;
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if (selectObject.options[i].selected) {
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filter.push("'daap.songgenre:" + genre.myEncodeURI() + "'");
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g_selectedGenres[genre] = true;
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} else {
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g_selectedGenres[genre] = false;
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}
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}
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filter = '?filter=' + filter.join(',');
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}
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//dump(DataDumper(g_selectedGenres));
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g_requestor.addRequest('databases/1/browse/artists' + filter);
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g_requestor.addRequest('databases/1/browse/albums' + filter);
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}
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function artistSelect(event) {
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selectObject = event.target;
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filter = '';
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if (selectObject.options[0].selected) {
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// All selected, sort according to genre
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filter = Array();
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for (genre in g_selectedGenres) {
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if (g_selectedGenres[genre]) {
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filter.push("'daap.songgenre:" + genre.myEncodeURI() + "'");
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}
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}
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if (0 == filter.length) {
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// If filter array is empty then "All genres" is selected
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// so set filter to empty
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filter = '';
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} else {
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filter = '?filter=' + filter.join(',');
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}
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} else {
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filter = Array();
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for (i=1; i<selectObject.options.length; i++) {
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artist = selectObject.options[i].value;
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if (selectObject.options[i].selected) {
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filter.push("'daap.songartist:" + artist.myEncodeURI() + "'");
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g_selectedArtists[artist] = true;
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} else {
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g_selectedArtists[artist] = false;
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}
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}
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// If all is selected then search on all artists but honor genre
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filter = '?filter=' + filter.join(',');
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}
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g_requestor.addRequest('databases/1/browse/albums' + filter);
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}
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function albumSelect(event) {
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// just get the songs, the only box changed is this one
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getSongs();
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}
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function getSongs() {
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genre = document.getElementById('genre').value;
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artist = document.getElementById('artist').value;
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album = document.getElementById('album').value;
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//alert("genre: "+genre +"\nartist: "+ artist + "\nalbum:"+ album);
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query = Array();
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if (genre != '1') {
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query.push('\'daap.songgenre:' + genre.myEncodeURI() +"'");
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}
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if (artist != '1') {
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query.push('\'daap.songartist:' + artist.myEncodeURI() +"'");
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}
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if (album != '1') {
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query.push('\'daap.songalbum:' + album.myEncodeURI() +"'");
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}
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if (0 == query.length) {
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// If filter array is empty then "All genres" is selected
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// so set filter to empty
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query = '';
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} else {
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query = '&query=' + query.join(' ');
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}
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//alert(query);
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g_requestor.addRequest('databases/1/items' +
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'?meta=dmap.itemname,daap.songalbum,daap.songartist,daap.songgenre,daap.songtime'+query);
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///items?meta=dmap.itemname,daap.songalbum,daap.songartist,daap.songgenre,daap.songtime&output=xml
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}
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function addSongs(xmldoc) {
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items = xmldoc.getElementsByTagName('dmap.listingitem');
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className = 'odd';
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table = document.getElementById('songs');
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tableBody = removeRows(table);
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for (i=0; i < items.length; i++) {
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// Have to check if the tag really was returned from the server
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if (song = items[i].getElementsByTagName('dmap.itemname').item(0)) {
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song = song.textContent;
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} else {
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song = '';
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}
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time = ''; //items[i].getElementsByTagName('daap.songtime').item(0).textContent;
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if (artist = items[i].getElementsByTagName('daap.songartist').item(0)) {
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artist = artist.textContent;
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} else {
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artist = '';
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}
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if (album = items[i].getElementsByTagName('daap.songalbum').item(0)) {
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album = album.textContent;
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} else {
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album = '';
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}
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if (genre = items[i].getElementsByTagName('daap.songgenre').item(0)) {
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genre = genre.textContent;
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} else {
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genre = '';
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}
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if ('odd' == className) {
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className = 'even';
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} else {
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className = 'odd';
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}
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addRow(tableBody,className,song,time,artist,album,genre);
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}
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}
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