bool ProcessCmdKeyImpl(ref Message msg, Keys keyData)
{
switch (keyData)
{
case Keys.Left: _fileIndex = LoadPictures(_fileIndex, -1, -1); break;
case Keys.Right: _fileIndex = LoadPictures(_fileIndex, +1, +1); break;
case Keys.Control | Keys.Left: _fileIndex = LoadPictures(_fileIndex, -1, 0); break;
case Keys.Control | Keys.Shift | Keys.Left: _fileIndex = LoadPictures(_fileIndex, 0, -1); break;
case Keys.Control | Keys.Right: _fileIndex = LoadPictures(_fileIndex, 1, 0); break;
case Keys.Control | Keys.Shift | Keys.Right: _fileIndex = LoadPictures(_fileIndex, 0, 1); break;
case Keys.PageDown: OpenNextFolder(_currentDirectory, FolderDirection.Forward); break;
case Keys.PageUp: OpenNextFolder(_currentDirectory, FolderDirection.Backward); break;
case Keys.NumPad1:
case Keys.D1:
ArchiveLeftPicture();
break;
case Keys.NumPad2:
case Keys.D2:
ArchiveRightPicture();
break;
default:
return(base.ProcessCmdKey(ref msg, keyData));
}
return(true);
}
void buttonUndo_Click(object sender, EventArgs e)
{
if (_shelvedFiles.Count == 0)
{
return;
}
if (_shelvedFiles.Count == 1)
{
buttonUndo.Enabled = false;
}
var userPrefs = new PersistedUserPreferences();
var shelvedFile = _shelvedFiles.Pop();
var host = new ImageHost(
new FileNameHandler(userPrefs),
userPrefs.ShelfName,
new FileInfo(shelvedFile.Item1)
)
{
Parent = _currentFiles
};
host.ShelvePicture();
var nextNode = _currentFiles.First;
while (nextNode != null &&
string.Compare(nextNode.Value.FileInfo.Name, host.FileInfo.Name, StringComparison.InvariantCultureIgnoreCase) < 0
)
{
nextNode = nextNode.Next;
}
NodesTuple displayLocation;
if (nextNode == null)
{
_currentFiles.AddLast(host);
displayLocation = _currentFiles.Count == 1
? new NodesTuple(_currentFiles.First, _currentFiles.First)
: new NodesTuple(_currentFiles.Last.Previous, _currentFiles.Last);
}
else
{
var newNode = _currentFiles.AddBefore(nextNode, host);
if (shelvedFile.Item2 == Side.Right && newNode.Previous != null)
{
displayLocation = new NodesTuple(newNode.Previous, newNode);
}
else
{
displayLocation = new NodesTuple(newNode, newNode.Next);
}
}
_fileIndex = LoadPictures(displayLocation, 0, 0, noRelease: true);
}
NodesTuple LoadPictures(NodesTuple idx, int stepLeft, int stepRight, bool noRelease = false)
{
var rc = SelectIndexes(idx, stepLeft, stepRight);
if (rc.Left == null || rc.Right == null)
{
return(null);
}
Trace.WriteLine($"LoadPictures({rc.Left.Value.FileInfo.Name}, {rc.Right.Value.FileInfo.Name}, {stepLeft}, {stepRight}, {noRelease})");
rc.Left?.Value?.Render(pictureBox1, labelLeft);
rc.Right?.Value?.Render(pictureBox2, labelRight);
if (!noRelease)
{
idx?.Left?.Value?.Release();
idx?.Right?.Value?.Release();
}
Trace.WriteLine($"LoadPictures returns({rc.Left.Value.FileInfo.Name}, {rc.Right.Value.FileInfo.Name})");
return(rc);
}
void OpenFolderImpl(Func <string, bool> fileNameMatcher, DirectoryInfo selectedPath, FileNameHandler fileNameHandler, string shelf)
{
_shelvedFiles.Clear();
buttonUndo.Enabled = false;
_currentDirectory = selectedPath;
Text = _currentDirectory.FullName;
_currentFiles = new LinkedList <ImageHost>(
_currentDirectory
.EnumerateFiles("*", SearchOption.TopDirectoryOnly)
.Where(f => fileNameMatcher(f.Name))
.OrderBy(f => f.Name)
.Select(f => new ImageHost(fileNameHandler, shelf, f))
);
_currentFiles.ForEach(ih => ih.Parent = _currentFiles);
switch (_currentFiles.Count)
{
case 0:
// MessageBox.Show($"There are no pictures to sort in folder {selectedPath}", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
_fileIndex = new NodesTuple(null, null);
return;
case 1:
_fileIndex = LoadPictures(new NodesTuple(_currentFiles.First, _currentFiles.First), 0, 0, noRelease: true);
break;
default:
_fileIndex = LoadPictures(new NodesTuple(_currentFiles.First, _currentFiles.First.Next), 0, 0, noRelease: true);
break;
}
buttonShelfLeft.Image = buttonShelfRight.Image =
_currentDirectory.Name.Equals(shelf, StringComparison.InvariantCultureIgnoreCase)
? Properties.Resources.SmallUnshelve
: Properties.Resources.SmallShelve;
Focus();
}
void buttonNavigateRightRight_Click(object sender, EventArgs e)
{
_fileIndex = LoadPictures(_fileIndex, 0, 1);
}
void buttonNavigateBothLeft_Click(object sender, EventArgs e)
{
_fileIndex = LoadPictures(_fileIndex, -1, -1);
}
void rightPreviousToolStripMenuItem_Click(object sender, EventArgs e)
{
_fileIndex = LoadPictures(_fileIndex, 0, -1);
}
void leftNextToolStripMenuItem_Click(object sender, EventArgs e)
{
_fileIndex = LoadPictures(_fileIndex, 1, 0);
}
void ArchivePicture(ImageHost imageHost, int step1, int step2)
{
_fileIndex = LoadPictures(_fileIndex, step1, step2);
_currentFiles.Remove(imageHost);
imageHost.Dispose();
}
static NodesTuple SelectIndexes(NodesTuple idx, int step1, int step2) => new NodesTuple(idx?.Left.SafeStep(step1), idx?.Right.SafeStep(step2));
