private void DoDragDrop(MouseEventArgs e, IDragableCommandModel cmd)
{
////_isDragging = true;
DataObject data = new DataObject(typeof(IDragableCommandModel), cmd);
DragDropEffects de = DragDrop.DoDragDrop(this, data, DragDropEffects.Copy);
////_isDragging = false;
}
protected override void OnPreviewMouseMove(MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed && !_isDragging)
{
CommandButton selectedItem = this.SelectedItem as CommandButton;
if (selectedItem == null)
{
return;
}
IDragableCommandModel cmd = selectedItem.CommandModel as IDragableCommandModel;
if (cmd == null)
{
return;
}
Point position = e.GetPosition(null);
if (Math.Abs(position.X - _startPoint.X) > SystemParameters.MinimumHorizontalDragDistance ||
Math.Abs(position.Y - _startPoint.Y) > SystemParameters.MinimumVerticalDragDistance)
{
DoDragDrop(e, cmd);
this.SelectedIndex = -1;
}
}
}
/// <summary>
/// Handles the Drop event of the canvas.
/// When a IDragableCommand, which represents an item from a ribbon gallery, is dropped on the canvas, its OnDragDropExecute is called.
/// </summary>
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
IDragableCommandModel cmd = (IDragableCommandModel)e.Data.GetData(typeof(IDragableCommandModel));
if (cmd != null)
{
cmd.OnDragDropExecute(e.GetPosition(_itemsControl));
e.Handled = true;
return;
}
string fileName = IsSingleFile(e);
if (fileName != null)
{
//Check if the datamodel is ready
if (!(_CanvasViewModel._DocumentViewModel.dm_DocumentDataModel.State == DataModel.ModelState.Ready ||
_CanvasViewModel._DocumentViewModel.dm_DocumentDataModel.State == DataModel.ModelState.Invalid))
{
return;
}
Application.Current.MainWindow.Activate();
if (!_CanvasViewModel._DocumentViewModel.QuerySaveChanges())
{
return;
}
try
{
// Open the document.
_CanvasViewModel._DocumentViewModel.LoadFile(fileName);
}
catch (Exception ex)
{
ExceptionManager.Register(ex,
"Operation aborted.",
"An error occured while opening the file " + fileName + ".");
ExceptionManager.ShowErrorDialog(true);
}
return;
}
}
/// <summary>
/// Handles the Drop event of the canvas.
/// When a IDragableCommand, which represents an item from a ribbon gallery, is dropped on the canvas, its OnDragDropExecute is called.
/// </summary>
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
if (this.mPart_ItemsControl == null)
{
return;
}
if (e.Data.GetDataPresent(typeof(IDragableCommandModel)))
{
IDragableCommandModel cmd = (IDragableCommandModel)e.Data.GetData(typeof(IDragableCommandModel));
cmd.OnDragDropExecute(e.GetPosition(this.mPart_ItemsControl));
e.Handled = true;
return;
}
if (e.Data.GetDataPresent(typeof(MiniUML.Framework.helpers.DragObject)))
{
try
{
MiniUML.Framework.helpers.DragObject dragObject = (MiniUML.Framework.helpers.DragObject)e.Data.GetData(typeof(MiniUML.Framework.helpers.DragObject));
IDragableCommandModel c = dragObject.ObjectInstance as IDragableCommandModel;
if (c == null)
{
return;
}
Point p = e.GetPosition(this.mPart_ItemsControl);
if (p != null)
{
c.OnDragDropExecute(p);
}
return;
}
catch (Exception ex)
{
Msg.Show(ex, "Drag & Drop operation aborted on error",
"An erro occurred", MsgBoxButtons.OK);
}
}
string fileName = this.IsSingleFile(e);
if (fileName != null)
{
// Check if the datamodel is ready
if (!(this.CanvasViewModel.DocumentViewModel.dm_DocumentDataModel.State == DataModel.ModelState.Ready ||
this.CanvasViewModel.DocumentViewModel.dm_DocumentDataModel.State == DataModel.ModelState.Invalid))
{
return;
}
Application.Current.MainWindow.Activate();
if (this.CanvasViewModel.DocumentViewModel.QuerySaveChanges() == false)
{
return;
}
try
{
// Open the document.
CanvasViewModel.DocumentViewModel.LoadFile(fileName);
}
catch (Exception ex)
{
Msg.Show(ex, string.Format(MiniUML.Framework.Local.Strings.STR_OpenFILE_MSG, fileName),
MiniUML.Framework.Local.Strings.STR_OpenFILE_MSG_CAPTION, MsgBoxButtons.OK);
}
return;
}
}
