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//
// ThreadPoolImportSource.cs
//
// Author:
// Scott Peterson <lunchtimemama@gmail.com>
//
// Copyright (C) 2008 Scott Peterson
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.IO;
using System.Threading;
using Mono.Unix;
using Hyena;
using Hyena.Jobs;
using Banshee.ServiceStack;
using Banshee.Sources;
namespace Banshee.Library
{
public abstract class ThreadPoolImportSource : IImportSource
{
private bool importing;
private UserJob user_job;
private readonly object user_job_mutex = new object ();
private void CreateUserJob ()
{
lock (user_job_mutex) {
if(user_job != null) {
return;
}
user_job = new UserJob (UserJobTitle, UserJobTitle, Catalog.GetString ("Importing Songs"));
user_job.SetResources (Resource.Cpu, Resource.Disk, Resource.Database);
user_job.PriorityHints = PriorityHints.SpeedSensitive | PriorityHints.DataLossIfStopped;
user_job.IconNames = IconNames;
user_job.CancelMessage = CancelMessage;
user_job.CanCancel = CanCancel;
user_job.Register ();
}
}
private void DestroyUserJob ()
{
lock(user_job_mutex) {
if(user_job == null) {
return;
}
user_job.Finish ();
user_job = null;
}
}
protected void UpdateUserJob (int processed, int count, string artist, string title)
{
user_job.Title = String.Format(
Catalog.GetString("Importing {0} of {1}"),
processed, count);
user_job.Status = String.Format("{0} - {1}", artist, title);
user_job.Progress = processed / (double)count;
}
protected void LogError (string path, Exception e)
{
LogError (path, e.Message);
}
protected void LogError (string path, string msg)
{
ThreadAssist.ProxyToMain (delegate {
ErrorSource error_source = ServiceManager.SourceManager.MusicLibrary.ErrorSource;
error_source.AddMessage (path, msg);
Log.Error (path, msg, false);
});
}
protected bool CheckForCanceled ()
{
lock(user_job_mutex) {
return user_job != null && user_job.IsCancelRequested;
}
}
private string user_job_title;
protected virtual string UserJobTitle {
get {
if (user_job_title == null) {
user_job_title = String.Format (Catalog.GetString ("Importing From {0}"), Name);
}
return user_job_title;
}
}
private string cancel_message = Catalog.GetString ("The import process is currently running. Would you like to stop it?");
protected virtual string CancelMessage {
get { return cancel_message; }
}
protected virtual bool CanCancel {
get { return true; }
}
#region IImportSource
public abstract string Name { get; }
public virtual string ImportLabel { get { return null; } }
public abstract string[] IconNames { get; }
public abstract int SortOrder { get; }
public virtual bool CanImport {
get { return true; }
}
public void Import ()
{
if (importing || !ConfirmImport ()) {
return;
}
importing = true;
CreateUserJob ();
ThreadPool.QueueUserWorkItem (ImportCore);
importing = false;
}
#endregion
private void ImportCore (object o)
{
ImportCore ();
DestroyUserJob ();
}
protected virtual bool ConfirmImport ()
{
return true;
}
protected abstract void ImportCore ();
}
}
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