/// <summary>
/// Drop event to call the respective classes to handle
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void AssociatedObject_Drop(object sender, DragEventArgs e)
{
if (dataType != null)
{
//if the data type can be dropped
if (e.Data.GetDataPresent(dataType))
{
//drop the data
IDropable target = AssociatedObject.DataContext as IDropable;
if (target.CanDrop)
{
target.Drop(e.Data.GetData(dataType));
//remove the data from the source
IDragable source = e.Data.GetData(dataType) as IDragable;
source.Remove(e.Data.GetData(dataType));
}
}
}
if (adorner != null)
{
adorner.Remove();
}
e.Handled = true;
return;
}
void AssociatedObject_Drop(object sender, DragEventArgs e)
{
if (_dataType != null)
{
//if the data type can be dropped
if (e.Data.GetDataPresent(_dataType))
{
//drop the data
IDropable target = AssociatedObject.DataContext as IDropable;
//var point = e.GetPosition(this.AssociatedObject.DataContext as IInputElement);
if (target != null)
{
target.Drop(e.Data.GetData(_dataType), e);
}
//remove the data from the source
IDragable source = e.Data.GetData(_dataType) as IDragable;
if (source != null)
{
source.Remove(e.Data.GetData(_dataType));
}
}
}
//if (this.adorner != null)
// this.adorner.Remove();
e.Handled = true;
}
void AssociatedObject_Drop(object sender, DragEventArgs e)
{
if (dataType != null)
{
if (e.Data.GetDataPresent(dataType))
{
IDropable target = this.AssociatedObject.DataContext as IDropable;
target.Drop(e);
IDragable source = e.Data.GetData(dataType) as IDragable;
source.Remove();
}
}
}
/// <summary>
/// The associated object_ drop.
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The e.
/// </param>
private void AssociatedObject_Drop(object sender, DragEventArgs e)
{
// if the data type can be dropped
if (this.dataType != null)
{
if (e.Data.GetDataPresent(this.dataType))
{
// first find the UIElement that it was dropped over, then we determine if it's
// dropped above or under the UIElement, then insert at the correct index.
ItemsControl dropContainer = sender as ItemsControl;
// get the UIElement that was dropped over
UIElement droppedOverItem = UIHelper.GetUIElement(dropContainer, e.GetPosition(dropContainer));
int dropIndex = -1; // the location where the item will be dropped
dropIndex = dropContainer.ItemContainerGenerator.IndexFromContainer(droppedOverItem) + 1;
// find if it was dropped above or below the index item so that we can insert
// the item in the correct place
if (UIHelper.IsPositionAboveElement(droppedOverItem, e.GetPosition(droppedOverItem)))
{
// if above
dropIndex = dropIndex - 1; // we insert at the index above it
}
// remove the data from the source
IDragable source = e.Data.GetData(this.dataType) as IDragable;
source.Remove(e.Data.GetData(this.dataType));
// drop the data
IDropable target = this.AssociatedObject.DataContext as IDropable;
target.Drop(e.Data.GetData(this.dataType), dropIndex);
}
}
if (this.insertAdornerManager != null)
{
this.insertAdornerManager.Clear();
}
e.Handled = true;
return;
}
private void AssociatedObject_MouseMove(object sender, MouseEventArgs e)
{
if (_isMouseClicked)
{
Point p = e.GetPosition(this.AssociatedObject);
Debug.WriteLine("moving " + p.X + "," + p.Y);
if (_isDragging)
{
// update adorner
UpdateDragAdorner(p);
}
else
{
if (Math.Abs(p.X - _original.X) > 10 || Math.Abs(p.Y - _original.Y) > 10)
{
_isDragging = true;
FrameworkElement el = this.AssociatedObject;
FrameworkElement dragEl = null;
while ((FrameworkElement)VisualTreeHelper.GetParent(el) != null)
{
el = (FrameworkElement)VisualTreeHelper.GetParent(el);
if (AdornerLayer.GetAdornerLayer(el) != null)
{
_el = el;
}
if (el.DataContext is IDragable)
{
dragEl = el;
}
}
// get dragable parent
//while (!(el.DataContext is IDragable))
// el = (FrameworkElement)VisualTreeHelper.GetParent(el);
IDragable dragObject = dragEl.DataContext as IDragable;
if (dragObject != null)
{
Mouse.Capture(null);
// init adorner
Point pp = e.GetPosition(_el);
Point newpoint = new Point(pp.X - _original.X, pp.Y - _original.Y);
InitializeDragAdorner(this.AssociatedObject.DataContext, newpoint);
// start dragging
DataObject data = new DataObject();
data.SetData(dragObject.DragableDataType, this.AssociatedObject.DataContext);
//DragDropEffects effect = System.Windows.DragDrop.DoDragDrop(this.AssociatedObject, data, DragDropEffects.Move);
DragDropEffects effect = System.Windows.DragDrop.DoDragDrop(this.AssociatedObject,
new DragWrapper
{
Item = data,
DragInfo = _itemAdorner
},
DragDropEffects.Move);
// done dragging
Mouse.Capture(null);
_isMouseClicked = false;
_isDragging = false;
DestroyAdorner();
if (effect == DragDropEffects.Move)
{
dragObject.Remove(this.AssociatedObject.DataContext);
}
}
}
}
}
}
