public void MouseUp(MouseEventArgs e)
{
if (IsActive)
{
DeactivateTool();
//creation of the total undoredo package
CompoundCommand package = new CompoundCommand(this.Controller);
string message = string.Empty;
//notice that the connector can only be a connection connector because of the MouseDown check above
if (connectorMove)
{
#region We are moving a connection-connector
#region Is the connector attached?
//detach only if there is a parent different than a connection; the join of a chained connection is allowed to move
if (Selection.Connector.AttachedTo != null && !typeof(IConnection).IsInstanceOfType(Selection.Connector.AttachedTo))
{
DetachConnectorCommand detach = new DetachConnectorCommand(this.Controller, Selection.Connector.AttachedTo, Selection.Connector);
detach.Redo();
package.Commands.Add(detach);
}
#endregion
#region The moving part
//a bundle might look like overkill here but it makes the coding model uniform
Bundle bundle = new Bundle(Controller.Model);
bundle.Entities.Add(Selection.Connector);
MoveCommand move = new MoveCommand(this.Controller, bundle, new Point(lastPoint.X - initialPoint.X, lastPoint.Y - initialPoint.Y));
//no Redo() necessary here!
package.Commands.Add(move);
#endregion
#region The re-attachment near another connector
//let's see if the connection endpoints hit other connectors (different than the selected one!)
//define a predicate delegate to filter things out otherwise the hit will return the moved connector which would results
//in a stack overflow later on
Predicate <IConnector> predicate =
delegate(IConnector conn)
{
//whatever, except itself and any children of the moved connector
//since this would entail a child becoming a parent!
if (conn.Hit(e.Location) && conn != Selection.Connector && !Selection.Connector.AttachedConnectors.Contains(conn))
{
return(true);
}
return(false);
};
//find it!
IConnector parentConnector = Selection.FindConnector(predicate);
if (parentConnector != null) //aha, there's an attachment
{
BindConnectorsCommand binder = new BindConnectorsCommand(this.Controller, parentConnector, Selection.Connector);
package.Commands.Add(binder);
binder.Redo(); //this one is necessary since the redo cannot be performed on the whole compound command
}
#endregion
message = "Connector move";
#endregion
}
else
{
#region We are moving entities other than a connector
Bundle bundle = new Bundle(Controller.Model);
bundle.Entities.AddRange(Selection.SelectedItems);
MoveCommand cmd = new MoveCommand(this.Controller, bundle, new Point(lastPoint.X - initialPoint.X, lastPoint.Y - initialPoint.Y));
package.Commands.Add(cmd);
//not necessary to perform the Redo action of the command since the mouse-move already moved the bundle!
#endregion
message = "Entities move";
}
package.Text = message;
//whatever the content of the package we add it to the undo history
this.Controller.UndoManager.AddUndoCommand(package);
//show the tracker again
this.Controller.View.ShowTracker();
}
}
public void MouseUp(MouseEventArgs e)
{
if(IsActive)
{
DeactivateTool();
//creation of the total undoredo package
CompoundCommand package = new CompoundCommand(this.Controller);
string message = string.Empty;
//notice that the connector can only be a connection connector because of the MouseDown check above
if(connectorMove)
{
#region We are moving a connection-connector
#region Is the connector attached?
//detach only if there is a parent different than a connection; the join of a chained connection is allowed to move
if( Selection.Connector.AttachedTo != null && !typeof(IConnection).IsInstanceOfType(Selection.Connector.AttachedTo))
{
DetachConnectorCommand detach = new DetachConnectorCommand(this.Controller, Selection.Connector.AttachedTo, Selection.Connector);
detach.Redo();
package.Commands.Add(detach);
}
#endregion
#region The moving part
//a bundle might look like overkill here but it makes the coding model uniform
Bundle bundle = new Bundle(Controller.Model);
bundle.Entities.Add(Selection.Connector);
MoveCommand move = new MoveCommand(this.Controller, bundle, new Point(lastPoint.X - initialPoint.X, lastPoint.Y - initialPoint.Y));
//no Redo() necessary here!
package.Commands.Add(move);
#endregion
#region The re-attachment near another connector
//let's see if the connection endpoints hit other connectors (different than the selected one!)
//define a predicate delegate to filter things out otherwise the hit will return the moved connector which would results
//in a stack overflow later on
Predicate<IConnector> predicate =
delegate(IConnector conn)
{
//whatever, except itself and any children of the moved connector
//since this would entail a child becoming a parent!
if(conn.Hit(e.Location) && conn != Selection.Connector && !Selection.Connector.AttachedConnectors.Contains(conn))
return true;
return false;
};
//find it!
IConnector parentConnector = Selection.FindConnector(predicate);
if(parentConnector != null) //aha, there's an attachment
{
BindConnectorsCommand binder = new BindConnectorsCommand(this.Controller, parentConnector, Selection.Connector);
package.Commands.Add(binder);
binder.Redo(); //this one is necessary since the redo cannot be performed on the whole compound command
// change the DDTConnection properties
if (Selection.Connector.Equals(((DDTConnection)Selection.Connector.Parent).From))
{
((DDTConnection)Selection.Connector.Parent).fromId = ((IDDTObject)parentConnector.Parent).ID;
((DDTConnection)Selection.Connector.Parent).fromConnectorIndex = DDTConnectionTool.getConnectorIndex(parentConnector);
// MessageBox.Show(((DDTConnection)Selection.Connector.Parent).fromId.ToString()); //connection
// MessageBox.Show(((DDTConnection)Selection.Connector.Parent).fromConnectorIndex.ToString()); //object
}
else //equals To
{
((DDTConnection)Selection.Connector.Parent).toId = ((IDDTObject)parentConnector.Parent).ID;
((DDTConnection)Selection.Connector.Parent).toConnectorIndex = DDTConnectionTool.getConnectorIndex(parentConnector);
//MessageBox.Show(((DDTConnection)Selection.Connector.Parent).toId.ToString()); //connection
// MessageBox.Show(((DDTConnection)Selection.Connector.Parent).toConnectorIndex.ToString()); //object
}
}
#endregion
message = "Connector move";
#endregion
}
else
{
#region We are moving entities other than a connector
Bundle bundle = new Bundle(Controller.Model);
bundle.Entities.AddRange(Selection.SelectedItems);
MoveCommand cmd = new MoveCommand(this.Controller, bundle, new Point(lastPoint.X - initialPoint.X, lastPoint.Y - initialPoint.Y));
package.Commands.Add(cmd);
//not necessary to perform the Redo action of the command since the mouse-move already moved the bundle!
#endregion
message = "Entities move";
}
package.Text = message;
//whatever the content of the package we add it to the undo history
this.Controller.UndoManager.AddUndoCommand(package);
//show the tracker again
this.Controller.View.ShowTracker();
}
}