/// <summary>
/// Called when processing has been completed or aborted.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnComplete(object sender, ShowProgressArgs e)
{
if (IsDisposed)
{
return;
}
if (InvokeRequired == false)
{
statusBar.Text = e.StatusMessage;
if (e.Failed)
{
textBoxResult.Text = "";
MessageBox.Show(e.StatusMessage, "Operation failed.",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
textBoxResult.Text = e.FileList;
MakeStateTransition(ComputeState.Idle);
}
else
{
Computer.ProgressEvent completeHandler = OnComplete;
Invoke(completeHandler, sender, e);
}
}
/// <summary>
/// Called periodically while computing.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnProgress(object sender, ShowProgressArgs e)
{
try
{
if (InvokeRequired == false)
{
if (e.StatusMessage.Length > 0)
{
statusBarText.Text = e.StatusMessage;
}
else
{
statusBarText.Text =
$"Selected {NumberFormatter.To1024BaseString(e.BytesUsed, 3, "bytes")}, unused space is {NumberFormatter.To1024BaseString(e.BytesTotal - e.BytesUsed, 3, "bytes")} ({NumberFormatter.ToPercentage(e.BytesUsed, e.BytesTotal):f2}%).";
}
textBoxResult.Text = e.FileList;
}
else
{
Computer.ProgressEvent showProgress = OnProgress;
Invoke(showProgress, sender, e);
}
}
catch (ObjectDisposedException)
{
// User decided to quit
e.Cancel = true;
}
}
private void UpdateProgress(string statusMessage, bool failed)
{
if (BetterMatch != null)
{
ShowProgressArgs e =
new ShowProgressArgs(_bestBytes, _maxBytes);
if (_bestSelelection != null)
{
e.FileList = GetBestFileText();
}
e.StatusMessage = statusMessage;
e.Failed = failed;
BetterMatch(this, e);
if (e.Cancel)
{
Stop();
}
}
}
public void FindOptimalCombination()
{
_cancel = false;
ShowProgressArgs progress = new ShowProgressArgs(0, _maxBytes);
try
{
BuildFileList(_sourcePath, _nestingLevel);
if (_cancel)
{
return;
}
_bestBytes = 0;
_bestSelelection = new bool[_sourceFiles.Length];
_currentSelelection = new bool[_sourceFiles.Length];
for (int y = 0; y < _currentSelelection.Length; y++)
{
_currentSelelection[y] = false;
}
// Sorting descending makes it easier to test the largest files first.
Array.Sort(_sourceFiles);
Array.Reverse(_sourceFiles);
if (_sourceFiles.Length <= 0)
{
throw new ApplicationException(
$"No file was found on source path '{_sourcePath}'.");
}
if (_sourceFiles[_sourceFiles.GetUpperBound(0)].Size > _maxBytes)
{
throw new ApplicationException("All files are too big for target.");
}
if (_maxBytes > _sourceBytes)
{
// Not enough source files, select all and quit.
for (int i = 0; i < _bestSelelection.Length; i++)
{
_bestSelelection[i] = true;
}
_bestBytes = _sourceBytes;
UpdateProgress(string.Empty, false);
}
else
{
FindOptimalCombination(0, 0);
}
}
catch (Exception caught)
{
progress.Failed = true;
progress.StatusMessage = caught.Message;
}
finally
{
if (ComputeComplete != null)
{
progress.BytesUsed = _bestBytes;
if (!progress.Failed)
{
progress.FileList = GetBestFileText();
}
ComputeComplete(this, progress);
}
}
}