private void CreateFolderButtonClick(object sender, EventArgs e)
{
using (var pb = new FavoritesFolderForm(string.Empty, string.Empty, true))
if (pb.ShowDialog(this) == DialogResult.OK)
{
var activeFolder = _folderView.ActiveNode as FavoritesFolder;
if (activeFolder == null || pb.CreateAsRoot)
{
activeFolder = _favManager.RootFolder;
}
// TODO: Действия в AddFolder и Reload, приводят к тому,
// что добавление первой папки вызывает искючение при установке свойства Nodes дерева.
_favManager.AddFolder(pb.FolderName, pb.FolderComment, activeFolder);
_favManager.Reload();
var folders = _favManager.RootFolder;
folders.ShowLinks = false;
_folderView.VirtualListSize = folders.Count;
_folderView.Nodes = folders;
}
}
private void GridDragDrop(object sender, DragEventArgs e)
{
var effect = DragDropEffects.None;
if (sender == _grid)
{
int dummy;
var point = _grid.PointToClient(new Point(e.X, e.Y));
ITreeNode activeNode;
_grid.GetNodeAndCellIndexAt(point.X, point.Y, out activeNode, out dummy);
if (activeNode == null)
{
activeNode = _favManager.RootFolder;
}
var activeEntry = activeNode as IFavoritesEntry;
if (activeEntry != null)
{
var activeFolder = activeEntry.IsContainer ? (FavoritesFolder)activeEntry : (FavoritesFolder)activeEntry.Parent;
if (e.Data.GetDataPresent(typeof(TreeNodeBag)))
{
var dropNodes = (TreeNodeBag)e.Data.GetData(typeof(TreeNodeBag));
if (dropNodes != null && dropNodes.Count > 0)
{
var select = LastActiveNode ?? _grid.ActiveNode;
if (dropNodes.IsAssignableFrom(typeof(IFavoritesEntry)))
{
var copy = DragDropHelper.GetDropEffect(e.KeyState, true) == DragDropEffects.Copy;
var failedItems = new List <IFavoritesEntry>();
ProgressWorker.Run(_serviceManager, false,
pi =>
{
pi.SetProgressText(SR.Favorites.MovingItems);
// При одновременном перемещении контейнера и его элементов,
// элементы оказываются не в "своём" контейнере, а в том, где отпустили мышь.
// Так и задумано
foreach (IFavoritesEntry entry in dropNodes)
{
if (copy)
{
Debug.Assert(entry is FavoritesLink, "entry is FavoritesLink");
var link = (FavoritesLink)entry;
if (!_favManager.AddMessageLink(link.MessageId, link.Comment, activeFolder))
{
failedItems.Add(entry);
}
}
else if (!entry.Move(activeFolder))
{
failedItems.Add(entry);
}
}
},
() =>
{
_favManager.Reload();
if (failedItems.Count > 0)
{
var failedMessages = new StringBuilder();
failedMessages.Append(Environment.NewLine);
foreach (var entry in failedItems)
{
var itemText = string.IsNullOrEmpty(entry.Comment)
? (entry is FavoritesLink
? ((FavoritesLink)entry).Link
: ((FavoritesFolder)entry).Name)
: entry.Comment;
failedMessages.AppendFormat(" \"{0}\"{1}", itemText, Environment.NewLine);
}
var message = String.Format(SR.Favorites.ItemsExists, failedMessages, activeFolder.Name);
MessageBox.Show(this, message,
FavoritesFeature.Instance.Info,
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
effect = (dropNodes.Count > failedItems.Count) ? (copy ? DragDropEffects.Copy : DragDropEffects.Move) : DragDropEffects.None;
});
}
else if (dropNodes.IsAssignableFrom(typeof(IMsg)))
{
var failedItems =
dropNodes
.Cast <IMsg>()
.Where(
message =>
!_favManager.AddMessageLink(message.ID, message.Subject, activeFolder))
.ToList();
if (failedItems.Count > 0)
{
var failedMessages = new StringBuilder();
failedMessages.Append(Environment.NewLine);
foreach (var message in failedItems)
{
failedMessages.AppendFormat("{0} - \"{1}\"{2}",
message.ID, message.Subject, Environment.NewLine);
}
var messageText = String.Format(SR.Favorites.ItemsExists, failedMessages, activeFolder.Name);
MessageBox.Show(this, messageText,
FavoritesFeature.Instance.Info,
MessageBoxButtons.OK, MessageBoxIcon.Warning);
} //if
effect = (dropNodes.Count > failedItems.Count) ? DragDropEffects.Link : DragDropEffects.None;
} //if
if (select != null)
{
_grid.EnsureVisible(select, false);
if (_grid.ActiveNode != select)
{
_grid.ActiveNode = select;
}
} //if
} //if
} //if
} //if
} //if
e.Effect = effect;
}