private void CopyItem(Model.KeyGroup _sourceItem, Model.KeyGroup _targetItem)
{
if (_sourceItem.Gruppenname == "Root")
{
return;
}
//Asking user wether he want to drop the dragged TreeViewItem here or not
if (MessageBox.Show("Wollen sie die Gruppe " + _sourceItem.Gruppenname + " in die Gruppe " + _targetItem.Gruppenname + " verschieben?", "Bearbeitung Gruppen", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
{
try
{
_targetItem.KeyGroups.Add(_sourceItem);
if (RootTreeViewItem != null)
{
Model.KeyGroup tmp = RootTreeViewItem.DataContext as Model.KeyGroup;
tmp.KeyGroups.Remove(_sourceItem);
}
else
{
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.Print("CopyItem:" + ex.Message.ToString());
}
}
}
private void ExtendedTreeView_DragOver(object sender, DragEventArgs e)
{
try
{
Point currentPosition = e.GetPosition(this);
if ((Math.Abs(currentPosition.X - _lastMouseDown.X) > 10.0) ||
(Math.Abs(currentPosition.Y - _lastMouseDown.Y) > 10.0))
{
// Verify that this is a valid drop and then store the drop target
Model.KeyGroup item = GetNearestContainer(e.OriginalSource as UIElement);
if (item != null)
{
if (CheckDropTarget(draggedItem, item))
{
e.Effects = DragDropEffects.Move;
}
else
{
e.Effects = DragDropEffects.None;
}
}
}
e.Handled = true;
}
catch (Exception ex)
{
System.Diagnostics.Debug.Print("DragOver:" + ex.Message.ToString());
}
}
private void ExtendedTreeView_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs <object> e)
{
Model.KeyGroup kg = (Model.KeyGroup)e.NewValue;
TreeViewItem tvi = GetItemFromObject(kg);
RootTreeViewItem = GetRootItem(tvi);
if (RootTreeViewItem != null)
{
System.Diagnostics.Debug.Print(RootTreeViewItem.Header.ToString());
}
}
private bool CheckDropTarget(Model.KeyGroup _sourceItem, Model.KeyGroup _targetItem)
{
//Check whether the target item is meeting your condition
bool _isEqual = false;
if (_sourceItem.Gruppenname != _targetItem.Gruppenname)
{
_isEqual = true;
}
return(_isEqual);
}
private Model.KeyGroup GetNearestContainer(UIElement element)
{
// Walk up the element tree to the nearest tree view item.
TreeViewItem UIContainer = FindParent <TreeViewItem>(element);
Model.KeyGroup NVContainer = null;
if (UIContainer != null)
{
NVContainer = UIContainer.DataContext as Model.KeyGroup;
}
return(NVContainer);
}
private void cboGroups_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count > 0)
{
Model.KeyGroup skg = (Model.KeyGroup)e.AddedItems[0];
if (skg != vmMain.SelectedGroup)
{
if (vmMain.SelectedGroup.KeyEntries.Contains(vm.SelectedKey))
{
skg.KeyEntries.Add(vm.SelectedKey);
vmMain.SelectedGroup.KeyEntries.Remove(vm.SelectedKey);
vmMain.SelectedGroup = skg;
}
}
}
}
private void ExtendedTreeView_MouseMove(object sender, MouseEventArgs e)
{
try
{
if (e.LeftButton == MouseButtonState.Pressed)
{
UIElement element = e.OriginalSource as UIElement;
Point currentPosition = e.GetPosition(this);
if ((Math.Abs(currentPosition.X - _lastMouseDown.X) > 10.0) ||
(Math.Abs(currentPosition.Y - _lastMouseDown.Y) > 10.0))
{
draggedItem = (Model.KeyGroup) this.SelectedItem;
if ((draggedItem != null))
{
DragDropEffects finalDropEffect = DragDrop.DoDragDrop(this, this.SelectedValue,
DragDropEffects.Move);
//Checking target is not null and item is dragging(moving)
if ((finalDropEffect == DragDropEffects.Move) && (_target != null))
{
// A Move drop was accepted
if (draggedItem.Gruppenname != _target.Gruppenname)
{
CopyItem(draggedItem, _target);
_target = null;
draggedItem = null;
}
}
}
}
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.Print("MouseMove:" + ex.Message.ToString());
}
}
private void ExtendedTreeView_Drop(object sender, DragEventArgs e)
{
try
{
e.Effects = DragDropEffects.None;
e.Handled = true;
// Verify that this is a valid drop and then store the drop target
Model.KeyGroup TargetItem = GetNearestContainer(e.OriginalSource as UIElement);
if (TargetItem != null && draggedItem != null)
{
_target = TargetItem;
e.Effects = DragDropEffects.Move;
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.Print("Drop:" + ex.Message.ToString());
}
}
public dlgGroupEditor(Model.DataBase db, Model.KeyGroup kg)
{
this.DataContext = KG;
InitializeComponent();
}
