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/***************************************************************************
* DownloadUserJob.cs
*
* Copyright (C) 2007 Michael C. Urbanski
* Written by Mike Urbanski <michael.c.urbanski@gmail.com>
****************************************************************************/
/* THIS FILE IS LICENSED UNDER THE MIT LICENSE AS OUTLINED IMMEDIATELY BELOW:
*
* 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 Gtk;
using Mono.Unix;
using Banshee.ServiceStack;
namespace Banshee.Podcasting.Gui
{
public class DownloadUserJob : UserJob
{
private bool disposed = false;
private bool canceled = false;
private bool cancelRequested = false;
private readonly object sync = new object ();
public DownloadUserJob () : base (Catalog.GetString ("Downloads"), String.Empty, String.Empty)
{
CancelRequested += OnCancelRequested;
Title = Catalog.GetString ("Downloading Podcast(s)");
Status = Catalog.GetString ("Initializing...");
CancelMessage = Catalog.GetString ("Cancel all podcast downloads?");
this.IconNames = new string[1] {
Stock.Network
};
CanCancel = true;
}
public void Dispose ()
{
lock (sync) {
if (disposed) {
throw new ObjectDisposedException (GetType ().FullName);
} else if (cancelRequested) {
throw new InvalidOperationException ("Cannot dispose object while canceling.");
} else {
disposed = true;
}
CancelRequested -= OnCancelRequested;
}
}
private bool SetCanceled ()
{
bool ret = false;
lock (sync) {
if (!cancelRequested && !canceled && !disposed) {
CanCancel = false;
ret = cancelRequested = true;
}
}
return ret;
}
public void UpdateProgress (int progress)
{
if (progress < 0 || progress > 100) {
throw new ArgumentException ("progress: Must be between 0 and 100.");
}
lock (sync) {
if (canceled || cancelRequested || disposed) {
return;
}
Progress = (double) progress / 100;
}
}
public void UpdateStatus (int downloading, int remaining, int completed, long bytesPerSecond)
{
if (downloading < 0) {
throw new ArgumentException ("downloading: Must be positive.");
} else if (bytesPerSecond < 0) {
bytesPerSecond = 0;
}
lock (sync) {
if (canceled || cancelRequested || disposed) {
return;
}
int total = remaining + completed;
string fmt = Catalog.GetPluralString (
"Transferring {0} file at {1} KB/s",
"Transferring {0} of {2} files at {1} KB/s", total
);
Status = String.Format (fmt, downloading, (bytesPerSecond / 1024), total);
}
}
private void OnCancelRequested (object sender, EventArgs e)
{
if (SetCanceled ()) {
lock (sync) {
Progress = 0.0;
Title = Catalog.GetString ("Canceling Downloads");
Status = Catalog.GetString (
"Waiting for downloads to terminate..."
);
cancelRequested = false;
canceled = true;
}
}
}
}
}
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