private void fileslistbox_PreviewMouseMove(object sender, MouseEventArgs e)
{
// Get the current mouse position
System.Windows.Point mousePos = e.GetPosition(null);
Vector diff = startPoint - mousePos;
if (e.LeftButton == MouseButtonState.Pressed &&
(
Math.Abs(diff.X) > SystemParameters.MinimumHorizontalDragDistance ||
Math.Abs(diff.Y) > SystemParameters.MinimumVerticalDragDistance)
)
{
// Get the dragged ListViewItem
ListView listView = sender as ListView;
ListViewItem listViewItem =
FindAnchestor <ListViewItem>((DependencyObject)e.OriginalSource);
if (listViewItem != null)
{
// Find the data behind the ListViewItem
ImageEntry ie = (ImageEntry)listView.ItemContainerGenerator.
ItemFromContainer(listViewItem);
// Initialize the drag & drop operation
DataObject dragData = new DataObject("myFormat", ie);
DragDrop.DoDragDrop(listViewItem, dragData, DragDropEffects.Copy);
}
}
}
private void selectionListViewDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent("myFormat"))
{
ImageEntry name = e.Data.GetData("myFormat") as ImageEntry;
ListViewItem listViewItem = FindAncestorOrSelf <ListViewItem>((DependencyObject)e.OriginalSource);
if (listViewItem != null)
{
ImageEntry nameToReplace = (ImageEntry)selectionlistbox.ItemContainerGenerator.ItemFromContainer(listViewItem);
int index = selectionlistbox.Items.IndexOf(nameToReplace);
if (index >= 0)
{
selectionlistbox.Items.Remove(name);
selectionlistbox.Items.Insert(index, name);
}
}
else
{
selectionlistbox.Items.Remove(name);
selectionlistbox.Items.Add(name);
}
}
}
private void selectionlistbox_Drop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent("myFormat"))
{
ImageEntry ie = e.Data.GetData("myFormat") as ImageEntry;
ListView listView = sender as ListView;
if (!listView.Items.Contains(ie))
{
ie.ToggleSelected(true);
listView.Items.Add(ie);
}
}
}
public List <string> GetSelectedFiles()
{
List <string> result = new List <string>();
if (explorer.SelectedPath == "")
{
return(result);
}
//DirectoryInfo dirinfo = new DirectoryInfo(explorer.SelectedPath);
foreach (var item in selectionlistbox.Items)
//foreach (var item in listbox.Items)
{
ImageEntry ie = (ImageEntry)item;
//if (ie.Selected)
result.Add(ie.FileNameInclPath);
}
return(result);
}
private void selectionBeginDrag(MouseEventArgs e)
{
//ListView listView = this.listbox;
//ListViewItem listViewItem =
// FindAncestorOrSelf<ListViewItem>((DependencyObject)e.OriginalSource);
ListView listView = this.selectionlistbox;
ListViewItem listViewItem =
FindAncestorOrSelf <ListViewItem>((DependencyObject)e.OriginalSource);
if (listViewItem == null)
{
return;
}
// get the data for the ListViewItem
ImageEntry name = (ImageEntry)selectionlistbox.ItemContainerGenerator.ItemFromContainer(listViewItem);
//setup the drag adorner.
selectionInitialiseAdorner(listViewItem);
//add handles to update the adorner.
fileslistbox.PreviewDragOver += selectionListViewDragOver;
fileslistbox.DragLeave += selectionListViewDragLeave;
fileslistbox.DragEnter += selectionListViewDragEnter;
DataObject data = new DataObject("myFormat", name);
DragDropEffects de = DragDrop.DoDragDrop(this.fileslistbox, data, DragDropEffects.Move);
//cleanup
fileslistbox.PreviewDragOver -= selectionListViewDragOver;
fileslistbox.DragLeave -= selectionListViewDragLeave;
fileslistbox.DragEnter -= selectionListViewDragEnter;
if (_adorner != null)
{
AdornerLayer.GetAdornerLayer(listView).Remove(_adorner);
_adorner = null;
}
}
private void selectionlistbox_Drop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent("myFormat"))
{
//MessageBox.Show(e.Data.GetData("myFormat").GetType().ToString());
ImageEntry name = e.Data.GetData("myFormat") as ImageEntry;
ListViewItem listViewItem = FindAncestorOrSelf <ListViewItem>((DependencyObject)e.OriginalSource);
if (listViewItem != null)
{
ImageEntry nameToReplace = (ImageEntry)selectionlistbox.ItemContainerGenerator.ItemFromContainer(listViewItem);
int removedIdx = (selectionlistbox.ItemsSource as ObservableCollection <ImageEntry>).IndexOf(name);
int targetIdx = (selectionlistbox.ItemsSource as ObservableCollection <ImageEntry>).IndexOf(nameToReplace);
(selectionlistbox.ItemsSource as ObservableCollection <ImageEntry>).Move(removedIdx, targetIdx);
}
else
{
(selectionlistbox.ItemsSource as ObservableCollection <ImageEntry>).Remove(name);
(selectionlistbox.ItemsSource as ObservableCollection <ImageEntry>).Add(name);
}
}
}
