/// <summary>
/// リンクを削除する
/// </summary>
public void RemoveLink(LinkViewModel link)
{
UndoableContext.CurrentContext.CommandStacking(new UndoableDelegate("RemoveLink", false,
// Undo
(o) => {
var d = o as ConnectorHistoryData;
d.linkObject.SourceConnector = d.source;
d.linkObject.TargetConnector = d.target;
Links.Add(d.linkObject);
return(o);
},
// Redo
(o) => {
// 内部でコールバック登録等を行っているのでちゃんといったんクリアする
var d = o as ConnectorHistoryData;
d.linkObject.SourceConnector = null;
d.linkObject.TargetConnector = null;
Links.Remove(d.linkObject);
return(o);
}),
// History data
new ConnectorHistoryData()
{
linkObject = link,
source = link.SourceConnector,
target = link.TargetConnector
}
);
// リンク解除
link.SourceConnector = null;
link.TargetConnector = null;
Links.Remove(link);
}
/// <summary>
///
/// </summary>
public void ConnectionDragging(ConnectionDraggingEventArgs arg)
{
LinkViewModel m = arg.Connection as LinkViewModel;
if (m == null)
{
return;
}
// 位置を更新
if (m.SourceConnector != null)
{
m.End = arg.Position;
}
else
{
m.Start = arg.Position;
}
}
/// <summary>
///
/// </summary>
/// <param name="connector"></param>
/// <returns></returns>
public LinkViewModel ConnectionDragStarted(NodeConnectorViewModel connector)
{
LinkViewModel link = new LinkViewModel();
switch (connector.Type)
{
case NodeConnectorViewModel.ConnectorType.Input:
link.TargetConnector = connector;
break;
case NodeConnectorViewModel.ConnectorType.Output:
link.SourceConnector = connector;
break;
}
// 追加
Links.Add(link);
return(link);
}
/// <summary>
///
/// </summary>
public void ConnectionDragCompleted(ConnectionDragCompletedEventArgs arg)
{
LinkViewModel m = arg.Connection as LinkViewModel;
if (m == null)
{
return;
}
bool isConnect = false;
if (arg.ConnectorDraggedOver != null)
{
NodeConnectorViewModel connector = arg.ConnectorDraggedOver as NodeConnectorViewModel;
if (connector != null)
{
var linkSource = m.SourceConnector != null ? m.SourceConnector : m.TargetConnector;
// リンク元と同じタイプ、同じ親ならdiscard
if (linkSource.Type != connector.Type &&
linkSource.Parent != connector.Parent
)
{
if (connector.Type == NodeConnectorViewModel.ConnectorType.Input)
{
m.TargetConnector = connector;
}
else
{
m.SourceConnector = connector;
}
isConnect = true;
}
}
}
// 接続されない場合リンクを削除する
if (!isConnect)
{
m.SourceConnector = null;
m.TargetConnector = null;
Links.Remove(m);
}
else
{
// 接続された場合Undo登録する
UndoableContext.CurrentContext.CommandStacking(new UndoableDelegate("ConnectAttribute", false,
// Undo
(o) => {
// 内部でコールバック登録等を行っているのでちゃんといったんクリアする
var d = o as ConnectorHistoryData;
d.linkObject.SourceConnector = null;
d.linkObject.TargetConnector = null;
Links.Remove(d.linkObject);
return(o);
},
// Redo
(o) => {
var d = o as ConnectorHistoryData;
d.linkObject.SourceConnector = d.source;
d.linkObject.TargetConnector = d.target;
Links.Add(d.linkObject);
return(o);
}),
// History data
new ConnectorHistoryData()
{
linkObject = m,
source = m.SourceConnector,
target = m.TargetConnector
}
);
}
}