/// <summary>
/// Method called to invoke before change on the list.
/// </summary>
/// <param name="args">RejectableEventArgsC object with generic type T.</param>
protected virtual void DoBeforeChange(CustomEventArgs <T> args)
{
if (null != BeforeChange)
{
BeforeChange.Invoke(this, args);
}
}
private void Watcher_Changed(object sender, FileSystemEventArgs e)
{
lock (ThreadLock)
{
Timer.Restart();
if (!Waiting)
{
Waiting = true;
BeforeChange?.Invoke(this, e);
Task.Run(() => {
while (true)
{
lock (ThreadLock)
{
Waiting = true;
if (Timer.ElapsedMilliseconds >= Threshold)
{
break;
}
}
Thread.Sleep(1);
}
Waiting = false;
AfterChange?.Invoke(this, e);
});
}
}
}
private void listTracks_DragDrop(object sender, DragEventArgs e)
{
// Get drop index
var point = listTracks.PointToClient(new Point(e.X, e.Y));
var index = listTracks.InsertionMark.NearestIndex(point);
// Get the list of items to drop
var items = e.Data.GetData(typeof(ListViewItem[])) as ListViewItem[];
// decide on move order
items = (index > items[0].Index) ? items : items.Reverse().ToArray();
// Fire before change notification
BeforeChange?.Invoke(this, null);
foreach (var item in items)
{
// Remove from list
listTracks.Items.Remove(item);
m_Tracks.Remove(item.Tag as TrackInfo);
// Insert in new position
listTracks.Items.Insert(index, item);
m_Tracks.Insert(index, item.Tag as TrackInfo);
}
// Fire tracks change notification
TracksChanged?.Invoke(this, null);
}
private void listTracks_KeyDown(object sender, KeyEventArgs e)
{
// Was delete key pressed?
if (e.KeyCode == Keys.Delete)
{
// Is there anything selected?
if (listTracks.SelectedItems.Count > 0)
{
// Compose message
var msgText = "Delete ";
msgText += (listTracks.SelectedItems.Count == 1) ? ((TrackInfo)listTracks.SelectedItems[0].Tag).Name : listTracks.SelectedItems.Count + " Tracks";
msgText += "?";
// Ask user
if (MessageBox.Show(this, msgText, @"Confirm Delete", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
// Fire before change notification
BeforeChange?.Invoke(this, null);
// Remove items
var itemsToRemove = listTracks.SelectedItems.Cast <ListViewItem>().ToList();
foreach (var item in itemsToRemove)
{
listTracks.Items.Remove(item);
m_Tracks.Remove(item.Tag as TrackInfo);
}
// Fire tracks change notification
TracksRemoved?.Invoke(this, null);
}
}
e.Handled = true;
}
}
protected override void RemoveItem(int index)
{
T deletedItem = this.Items[index];
BeforeChange?.Invoke(deletedItem);
base.RemoveItem(index);
}
private void listTracks_AfterLabelEdit(object sender, LabelEditEventArgs e)
{
// Check if label has text
if (!string.IsNullOrWhiteSpace(e.Label))
{
// Fire before change notification
BeforeChange?.Invoke(this, null);
// Assign edited value back to track
((TrackInfo)listTracks.Items[e.Item].Tag).Name = e.Label;
// Fire tracks change notification
TracksChanged?.Invoke(this, null);
}
}
private void OnBeforeChangeEvent(RejectableArgs <T> rejectableEventArgs) => BeforeChange?.Invoke(this, rejectableEventArgs);
protected virtual void OnBeforeChange(RejectableEventArgs_Subclass <T> args)
{
BeforeChange?.Invoke(this, args);
}