void dragHandle_DragCompleted(object sender,
DragCompletedEventArgs e)
{
Point actualPos = Mouse.GetPosition(this);
if (actualPos.X < 0 || actualPos.Y < 0)
{
canvas.isUpdatingLink = false;
visualChildren.Remove(linkPreview);
InvalidateArrange();
return;
}
CustomStroke newAnchoredStroke = null;
int number = 0;
foreach (UIElement thumb in canvas.Children)
{
if (thumb.GetType() == typeof(StrokeAnchorPointThumb))
{
Point thumbPosition = thumb.TransformToAncestor(canvas).Transform(new Point(0, 0));
StrokeAnchorPointThumb cheatThumb = thumb as StrokeAnchorPointThumb;
double y = thumbPosition.Y - actualPos.Y;
double x = thumbPosition.X - actualPos.X;
double distBetweenPoints = (Math.Sqrt(Math.Pow(x, 2) + Math.Pow(y, 2)));
if (distBetweenPoints <= 10)
{
newAnchoredStroke = cheatThumb.stroke;
actualPos = thumbPosition;
number = cheatThumb.number;
}
}
}
if (newAnchoredStroke != null)
{
//anchoredShapeStroke
if (linkStrokeAnchor == 0) //from is changing
{
if (anchoredShapeStroke != null) // there is a to
{
if (anchoredShapeStroke.isProccessStroke())
{
if (anchoredShapeStroke is ActorStroke)
{
ShowMessage("No shape can point to a role");
}
else if (anchoredShapeStroke is ActivityStroke)
{
if (newAnchoredStroke.GetType() != typeof(ActorStroke) &&
newAnchoredStroke.GetType() != typeof(ArtifactStroke))
{
ShowMessage("Only roles or artifacts can point to an activity.");
}
}
else if (anchoredShapeStroke is ArtifactStroke)
{
ShowMessage("A link cannot point to a role");
}
}
else if (anchoredShapeStroke is ClassStroke && linkStroke.isLinkAggCompHeritage())
{
if (!(newAnchoredStroke is ClassStroke))
{
ShowMessage("Aggregation, composition and heritage links must be between two classes.");
}
}
else if (newAnchoredStroke.isProccessStroke())
{
ShowMessage("Roles, artifacts and activities must be linked between themselves.");
}
}
else // there is no to
{
noNewStrokeLinkedToProcessOrClassCheck(newAnchoredStroke);
}
}
else // to is changing
{
CustomStroke fromStroke = anchoredShapeStroke;
if (fromStroke != null) // there is a from
{
if (fromStroke is ActorStroke)
{
if (!(newAnchoredStroke is ActivityStroke))
{
ShowMessage("A role can only be linked to an activity.");
}
}
else if (fromStroke is ArtifactStroke)
{
if (!(newAnchoredStroke is ActivityStroke))
{
ShowMessage("An artifact can only be linked to an activity.");
}
}
else if (fromStroke is ActivityStroke)
{
if (!(newAnchoredStroke is ArtifactStroke))
{
ShowMessage("An activity can only be linked to an artifact.");
}
}
else if (newAnchoredStroke != null && newAnchoredStroke.isProccessStroke())
{
ShowMessage("Roles, artifacts and activities must be linked between themselves.");
}
else if (fromStroke is ClassStroke && linkStroke.isLinkAggCompHeritage())
{
if (!(newAnchoredStroke is ClassStroke))
{
ShowMessage("Aggregation, composition and heritage links must be between two classes.");
}
}
}
else // there is no from
{
noNewStrokeLinkedToProcessOrClassCheck(newAnchoredStroke);
}
}
}
else // no newAnchoredStroke
{
if (anchoredShapeStroke != null && anchoredShapeStroke.isProccessStroke())
{
ShowMessage("Roles, artifacts and activities cannot be linked to nothing.");
}
if (anchoredShapeStroke != null && anchoredShapeStroke is ClassStroke && linkStroke.isLinkAggCompHeritage())
{
ShowMessage("Aggregation, composition and heritage links must be between two classes.");
}
//if (linkStrokeAnchor == 0) //from is changing to nothing. No from
//{
//}
//else //to is changing to nothing. Not to.
//{
//}
}
// voir fonction du anchorPointAdorner
if (!hasFailed)
{
canvas.updateLink(linkStrokeAnchor, linkStroke, newAnchoredStroke as ShapeStroke, number, actualPos);
}
else
{
StrokeCollection selectedStrokes = new StrokeCollection {
canvas.GetSelectedStrokes()
};
canvas.Select(new StrokeCollection {
});
canvas.Select(selectedStrokes);
}
//TODO eliminate preview
visualChildren.Remove(linkPreview);
InvalidateArrange();
}