//add a new vedio into the list
public void add(String path)
{
video_info tmp = null;
char[] separatingChars1 = { '\\', '/' };
string[] Names = path.Split(separatingChars1, StringSplitOptions.RemoveEmptyEntries);
string fileName = Names[Names.Length - 1];
//deduplication goes first
foreach (video_info myvideo in name_to_list.Values)
{
if (myvideo.fileName == fileName)
{
tmp = myvideo;
break;
}
}
//may be a real new one
if (tmp == null)
{
tmp = new video_info();
}
tmp.readFromAddr(path);
name_to_list.Add(tmp.fileName, tmp);
}
/// <summary>
/// add result to list
/// </summary>
/// <param name="item">single item. May iterate through the whole result set</param>
/// <param name="mediaInfo">mediaInfo object</param>
/// <param name="mybox">the ListBox component. In our program, pass in "selector in MainWindow class"</param>
static void update_search_result(video_info item, media_info mediaInfo, ListBox mybox)
{
mediaInfo.name_to_list.Add(item.fileName, item);
mybox.Items.Clear();
HashSet <String> play_list = mediaInfo.print();
general_add(play_list, mybox);
}
public void delete(string filename)
{
video_info to_delete_vid = name_to_list[filename];
//remove from document
XmlNode to_delete = doc.SelectSingleNode(String.Format("/Karaoke/video[@id='{0}']", to_delete_vid.id), man);
to_delete.ParentNode.RemoveChild(to_delete);
//remove from list
name_to_list.Remove(to_delete_vid.fileName);
}
//load the initial input video list...
public void load()
{
doc = new XmlDocument();
doc.Load(inputList);
man = new XmlNamespaceManager(doc.NameTable);
man.AddNamespace("kara", "list");
XmlElement root = doc.DocumentElement;
XmlNodeList videos = root.SelectNodes("/Karaoke/video", man);
foreach (XmlNode video in videos)
{
video_info tmp = new video_info();
tmp.load(video);
name_to_list.Add(tmp.fileName, tmp);
}
}
/// <summary>
/// return the truth value
/// search music title and singer name and album
/// </summary>
/// <param name="key">the string user type in search window</param>
/// <param name="item">a video_info. You may use iteration to traverse all video_infos</param>
/// <returns></returns>
public static bool search(string key, video_info item)
{
//split keys into multiple key, since we support multikeyword search
string[] keys = key.Split(null);
bool result = false;
//while result
foreach (string mykey in keys)
{
Regex regex = new Regex(mykey, RegexOptions.IgnoreCase);
result = result || regex.IsMatch(item.album) || regex.IsMatch(item.author) || regex.IsMatch(item.title) || regex.IsMatch(item.fileName);
//return true when result becomes true
if (result)
{
return(result);
}
}
return(result);
}