protected override void OnKeyDown(KeyEventArgs e)
{
//Expands row if right arrow is pressed
if (e.KeyData == Keys.Right)
{
int totalRowsAdded = 0;
foreach (var row in SelectedCells.Cast <DataGridViewCell>().Select(o => o.OwningRow).Distinct().OrderByDescending(o => o.Index))
{
totalRowsAdded += expand(row.Index, expandedRowList[row.Index].RowIndexHierarchy.Count);
}
base.RowCount += totalRowsAdded;
}
//Collapses row if left arrow is pressed
else if (e.KeyData == Keys.Left)
{
int totalRowsRemoved = 0;
foreach (var row in SelectedCells.Cast <DataGridViewCell>().Select(o => o.OwningRow).Distinct().OrderByDescending(o => o.Index))
{
totalRowsRemoved += collapse(row.Index);
}
base.RowCount -= totalRowsRemoved;
}
else
{
base.OnKeyDown(e);
return;
}
Refresh();
}
public void addTrackInfo(List <Track> tracks)
{
IsImporting = true;
List <int> rows = SelectedCells.Cast <DataGridViewCell>()
.Select(x => x.RowIndex).Distinct().ToList <int>();
bool singleSelected = false;
if (rows.Count == 0)
{
rows.Add(0); // start adding from first row if nothing is selected
}
if (rows.Count == 1)
{
for (int i = 1; i < tracks.Count; i++)
{
if (rows[rows.Count - 1] >= Rows.Count - 1)
{
break;
}
rows.Add(rows[rows.Count - 1] + 1);
}
singleSelected = true;
}
for (int i = 0; i < Math.Min(tracks.Count, rows.Count); i++)
{
Track track = tracks[i];
int r = rows[i];
this[pieceobj.Name, r].Value = track.Piece;
this[title.Name, r].Value = track.Name;
}
this.Invalidate();
if (!this.Focused && singleSelected)
{
ClearSelection();
Rows[(rows[rows.Count - 1] + 1 >= Rows.Count ? Rows.Count - 1 : rows[rows.Count - 1] + 1)].Selected = true;
FirstDisplayedScrollingRowIndex = (SelectedRows[0].Index - DisplayedRowCount(false) / 2 < 0) ?
0 : SelectedRows[0].Index - DisplayedRowCount(false) / 2;
}
IsImporting = false;
}
protected override void OnKeyUp(KeyEventArgs e)
{
if ((e.Shift && e.KeyCode == Keys.F10) || e.KeyCode == Keys.Apps)
{
// pop context menu on Shift+F10 or context key (i.e. "Apps")
e.Handled = true;
e.SuppressKeyPress = false;
var selectedCells = SelectedCells.Cast <DataGridViewCell>();
var cell = selectedCells.FirstOrDefault(dataGridViewCell => dataGridViewCell.Displayed);
if (cell != null)
{
var rect = GetCellDisplayRectangle(cell.ColumnIndex, cell.RowIndex, true);
var bottomLeft = new Point(rect.Left, rect.Bottom);
InvokeContextMenu(bottomLeft);
}
}
else
{
base.OnKeyUp(e);
}
}
}//end OnPaste
/// <summary>
/// Clears the values of the selected cells.
/// </summary>
public void OnDelete()
{
//Get Selection Range
///DataGridViewSelectedCellCollection (selectedCells) doesn't implement a generic
///IEnumerable<DataGridViewCell>, just IEnumerable.
///To enumerate the values when they are of type 'Object', .Cast<DataGridViewCell>
var selected = SelectedCells.Cast <DataGridViewCell>().ToList();
//LINQ method to get start and end indexes
int startRow = selected.Min(x => x.RowIndex);
int startCol = selected.Min(x => x.ColumnIndex);
int endRow = selected.Max(x => x.RowIndex);
int endCol = selected.Max(x => x.ColumnIndex);
//"Delete" selected cells (by assigning them empty strings)
for (int irow = startRow; irow < (endRow + 1); irow++)
{
for (int jcol = startCol; jcol < (endCol + 1); jcol++)
{
Rows[irow].Cells[jcol].Value = DBNull.Value;
}
}
}
protected override void OnCellValueChanged(DataGridViewCellEventArgs e)
{
if (e.RowIndex == -1 || e.ColumnIndex == -1)
{
return;
}
Piece p;
List <Artist> l;
Track track;
if (Columns[e.ColumnIndex] == pieceobj &&
(p = (Piece)this[pieceobj.Name, e.RowIndex].Value) != null)
{
this[composer.Name, e.RowIndex].Value = p.Composer.GetName(Artist.NameFormats.Last_First);
this[genre.Name, e.RowIndex].Value = p.Genre;
}
else if (Columns[e.ColumnIndex] == performersobj &&
(l = (List <Artist>) this[performersobj.Name, e.RowIndex].Value) != null)
{
this[performer.Name, e.RowIndex].Value = string.Join(" / ", l.ConvertAll <string>(
a => a.GetName(Artist.NameFormats.First_Last_Type)).ToArray());
}
else if (Columns[e.ColumnIndex] == trackobj &&
(track = (Track)this[trackobj.Name, e.RowIndex].Value) != null)
{
this[disc_num.Name, e.RowIndex].Value = track.DiscNumber;
this[track_num.Name, e.RowIndex].Value = track.TrackNumber;
this[pieceobj.Name, e.RowIndex].Value = track.Piece;
this[title.Name, e.RowIndex].Value = track.Name;
this[performersobj.Name, e.RowIndex].Value = track.Performers;
this[year.Name, e.RowIndex].Value = track.Year == 0 ? "" : track.Year.ToString();
this[filename.Name, e.RowIndex].Value = track.FileName;
this[filesize.Name, e.RowIndex].Value = string.Format(new FileSizeFormatProvider(), "{0:fs}", track.Size * 1024);
this[length.Name, e.RowIndex].Value = new TimeSpan(0, 0, track.Length).Duration().ToString().Substring(3, 5);
}
// the rest applies only when the user explicitly change values
if (IsImporting)
{
return;
}
// set the same value for multiple selected cells in the same column
var cells = SelectedCells.Cast <DataGridViewCell>().Where(x => (x.ColumnIndex == e.ColumnIndex)).ToList();
foreach (var cell in cells)
{
cell.Value = this[e.ColumnIndex, e.RowIndex].Value;
}
// automatically set the same property for the pieces in the same set
if (ColumnsWithRelatedValues.Contains(Columns[e.ColumnIndex].Name))
{
foreach (DataGridViewRow row in Rows)
{
if (((Piece)row.Cells[pieceobj.Name].Value).ID ==
((Piece)this[pieceobj.Name, e.RowIndex].Value).ID)
{
row.Cells[e.ColumnIndex].Value = this[e.ColumnIndex, e.RowIndex].Value;
}
}
}
base.OnCellValueChanged(e);
}
private void ProcessNewCtrlDown(bool shiftKey = false)
{
DataGridViewCell lastSelectedCell =
SelectedCells.Cast <DataGridViewCell>().Where(p => p.OwningRow.Frozen == false).OrderByDescending(
p => p.RowIndex).FirstOrDefault();
if (lastSelectedCell == null)
{
return;
}
bool reverse = false;
if (CurrentCell.RowIndex == lastSelectedCell.RowIndex && SelectedCells.Count > 1)
{
lastSelectedCell = SelectedCells.Cast <DataGridViewCell>().OrderBy(p => p.RowIndex).FirstOrDefault();
if (lastSelectedCell == null)
{
return;
}
reverse = true;
}
int currentColumnIndex = lastSelectedCell.ColumnIndex;
int currentRowIndex = lastSelectedCell.RowIndex;
DataGridViewCell nextCell = Rows.Count == lastSelectedCell.RowIndex + 1
? null
: Rows[lastSelectedCell.RowIndex + 1].Cells[currentColumnIndex];
if (nextCell == null)
{
return;
}
DataGridViewCell targetCell;
if ((lastSelectedCell.Value != null && nextCell.Value != null) &&
(lastSelectedCell.Value.ToString() == string.Empty ||
(lastSelectedCell.Value.ToString() != string.Empty && nextCell.Value.ToString() == string.Empty)))
{
targetCell = nextCell.Value.ToString() == string.Empty
? Rows.Cast <DataGridViewRow>().Where(
p =>
p.Cells[currentColumnIndex].Value != null && p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex > currentRowIndex &&
p.Cells[currentColumnIndex].Value.ToString() != string.Empty).Select(
p => p.Cells[currentColumnIndex]).FirstOrDefault()
: nextCell;
//no non blank exists, so goto the last cell in that column
targetCell = targetCell ?? Rows[Rows.Count - 1].Cells[currentColumnIndex];
targetCell = targetCell ??
Rows.Cast <DataGridViewRow>().OrderByDescending(p => p.Cells[currentColumnIndex].RowIndex).
First().Cells[currentColumnIndex];
}
else
{
targetCell =
Rows.Cast <DataGridViewRow>().Where(
p =>
p.Cells[currentColumnIndex].Value != null && p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex > currentRowIndex &&
p.Cells[currentColumnIndex].Value.ToString() == string.Empty).Select(
p => p.Cells[currentColumnIndex]).FirstOrDefault();
targetCell = targetCell == null
? Rows[Rows.Count - 1].Cells[currentColumnIndex]
: Rows[targetCell.RowIndex - 1].Cells[currentColumnIndex];
}
if (shiftKey)
{
int selectedRowIndex = reverse
? SelectedCells.Cast <DataGridViewCell>().OrderByDescending(p => p.RowIndex).
First().RowIndex
: SelectedCells.Cast <DataGridViewCell>().OrderBy(p => p.RowIndex).First().
RowIndex;
List <DataGridViewCell> toBeSelectedRows = reverse
? Rows.Cast <DataGridViewRow>().Where(
p =>
p.Cells[currentColumnIndex].Value != null &&
p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex >=
selectedRowIndex &&
p.Cells[currentColumnIndex].RowIndex <=
targetCell.RowIndex).Select(
p => p.Cells[currentColumnIndex]).
OrderByDescending(p => p.RowIndex).ToList()
: Rows.Cast <DataGridViewRow>().Where(
p =>
p.Cells[currentColumnIndex].Value != null &&
p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex >=
selectedRowIndex &&
p.Cells[currentColumnIndex].RowIndex <=
targetCell.RowIndex).Select(
p => p.Cells[currentColumnIndex]).OrderBy(
p => p.RowIndex).ToList();
SelectedCells.Cast <DataGridViewCell>().Where(p => p.RowIndex < targetCell.RowIndex).ForEach(
p => p.Selected = p.RowIndex > CurrentCell.RowIndex);
toBeSelectedRows.ForEach(a => a.Selected = CurrentCell.RowIndex <= a.RowIndex);
targetCell.Selected = true;
if (FirstDisplayedScrollingRowIndex + DisplayedRowCount(false) <= targetCell.RowIndex)
{
FirstDisplayedScrollingRowIndex = targetCell.RowIndex - DisplayedRowCount(false) + 1;
}
}
else
{
CurrentCell = targetCell;
}
}
private void ProcessNewCtrlUp(bool shiftKey = false)
{
DataGridViewCell firstSelectedCell =
SelectedCells.Cast <DataGridViewCell>().Where(p => p.OwningRow.Frozen == false).OrderBy(p => p.RowIndex).
FirstOrDefault();
if (firstSelectedCell == null)
{
return;
}
bool reverse = false;
if (CurrentCell.RowIndex == firstSelectedCell.RowIndex && SelectedCells.Count > 1)
{
firstSelectedCell =
SelectedCells.Cast <DataGridViewCell>().Where(p => p.OwningRow.Frozen == false).OrderByDescending(
p => p.RowIndex).FirstOrDefault();
if (firstSelectedCell == null)
{
return;
}
reverse = true;
}
int currentColumnIndex = firstSelectedCell.ColumnIndex;
int currentRowIndex = firstSelectedCell.RowIndex;
DataGridViewCell beforeCell = firstSelectedCell.RowIndex <= 0
? null
: Rows[firstSelectedCell.RowIndex - 1].Cells[currentColumnIndex];
if (beforeCell == null)
{
return;
}
DataGridViewCell targetCell;
if ((firstSelectedCell.Value != null && beforeCell.Value != null) &&
(firstSelectedCell.Value.ToString() == string.Empty ||
(firstSelectedCell.Value.ToString() != string.Empty && beforeCell.Value.ToString() == string.Empty)))
{
targetCell = beforeCell.Value.ToString() == string.Empty
? Rows.Cast <DataGridViewRow>().Reverse().Where(
p =>
p.Cells[currentColumnIndex].Value != null && p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex < currentRowIndex &&
p.Cells[currentColumnIndex].Value.ToString() != string.Empty).Select(
p => p.Cells[currentColumnIndex]).FirstOrDefault()
: beforeCell;
//no non blank exists, so goto the last cell in that column
targetCell = targetCell ?? Rows[0].Cells[currentColumnIndex];
}
else
{
targetCell =
Rows.Cast <DataGridViewRow>().Reverse().Where(
p =>
p.Cells[currentColumnIndex].Value != null && p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex < currentRowIndex &&
p.Cells[currentColumnIndex].Value.ToString() == string.Empty).Select(
p => p.Cells[currentColumnIndex]).FirstOrDefault();
//targetCell = targetCell == null ? Rows[0].Cells[currentColumnIndex] : Rows[targetCell.RowIndex + 1].Cells[currentColumnIndex];
targetCell = targetCell == null
? Rows.Cast <DataGridViewRow>().Where(p => p.Frozen == false).Select(
p => p.Cells[currentColumnIndex]).FirstOrDefault()
: Rows[targetCell.RowIndex + 1].Cells[currentColumnIndex];
}
if (targetCell == null)
{
return;
}
if (shiftKey)
{
int selectedRowIndex = reverse
? SelectedCells.Cast <DataGridViewCell>().OrderByDescending(p => p.RowIndex).
First().RowIndex
: SelectedCells.Cast <DataGridViewCell>().OrderBy(p => p.RowIndex).First().
RowIndex;
List <DataGridViewCell> toBeSelectedRows = reverse
? Rows.Cast <DataGridViewRow>().Where(
p =>
p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex <=
selectedRowIndex &&
p.Cells[currentColumnIndex].RowIndex >=
targetCell.RowIndex).Select(
p => p.Cells[currentColumnIndex]).OrderBy(
p => p.RowIndex).ToList()
: Rows.Cast <DataGridViewRow>().Where(
p =>
p.Frozen == false &&
p.Cells[currentColumnIndex].RowIndex <=
selectedRowIndex &&
p.Cells[currentColumnIndex].RowIndex >=
targetCell.RowIndex).Select(
p => p.Cells[currentColumnIndex]).
OrderByDescending(p => p.RowIndex).ToList();
toBeSelectedRows.ForEach(a => a.Selected = CurrentCell.RowIndex >= a.RowIndex);
targetCell.Selected = true;
if (FirstDisplayedScrollingRowIndex > targetCell.RowIndex)
{
FirstDisplayedScrollingRowIndex = targetCell.RowIndex;
}
}
else
{
CurrentCell = targetCell;
}
}