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/*
* Copyright (C) 2010 Nokia Corporation.
*
* Author: Zeeshan Ali <zeenix@gmail.com>
*
* This file is part of Rygel.
*
* Rygel is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Rygel is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
using Gee;
using GUPnP;
/**
* An array list that keeps media objects.
*/
public class Rygel.MediaObjects : ArrayList<MediaObject> {
public const string SORT_CAPS = "@id,@parentID,dc:title,upnp:class," +
"upnp:artist,upnp:author,upnp:album," +
"dc:date,upnp:originalTrackNumber";
public override Gee.List<MediaObject>? slice (int start, int stop) {
var slice = base.slice (start, stop);
var ret = new MediaObjects ();
ret.add_all (slice);
return ret;
}
public void sort_by_criteria (string sort_criteria) {
var sort_props = sort_criteria.split (",");
if (sort_props.length == 0) {
return;
}
this.sort_with_data ((a, b) => {
var object_a = a as MediaObject;
var object_b = b as MediaObject;
return this.compare_media_objects (object_a, object_b, sort_props);
});
}
internal void serialize (DIDLLiteWriter didl_writer,
HTTPServer http_server,
ClientHacks? hacks) throws Error {
foreach (var result in this) {
if (result is MediaItem && hacks != null) {
hacks.apply (result as MediaItem);
}
result.serialize (didl_writer, http_server);
}
}
private int compare_media_objects (MediaObject a,
MediaObject b,
string[] sort_props) {
int i;
int ret = 0;
for (i = 0; ret == 0 && i < sort_props.length; i++) {
var property = sort_props [i].substring (1);
ret = a.compare_by_property (b, property);
if (sort_props [i][0] == '-') {
// Need it in descending order so reverse the comparison
ret = 0 - ret;
}
}
return ret;
}
}
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