private void StartAddLink(ConnectorElement connStart, Point mousePoint)
{
if (document.Action == DesignerAction.Connect)
{
this.connStart = connStart;
this.connEnd = new ConnectorElement(connStart.ParentElement);
connEnd.Location = connStart.Location;
IMoveController ctrl = (IMoveController)((IControllable)connEnd).GetController();
ctrl.Start(mousePoint);
isAddLink = true;
switch (document.LinkType)
{
case (LinkType.Straight):
linkLine = new StraightLinkElement(connStart, connEnd);
break;
case (LinkType.RightAngle):
linkLine = new RightAngleLinkElement(connStart, connEnd);
break;
}
linkLine.Visible = true;
linkLine.BorderColor = Color.FromArgb(150, Color.Black);
linkLine.BorderWidth = 1;
this.Invalidate(linkLine, true);
OnElementConnecting(new ElementConnectEventArgs(connStart.ParentElement, null, linkLine));
}
}
private void EndAddLink()
{
if (connEnd != linkLine.Connector2)
{
linkLine.Connector1.RemoveLink(linkLine);
linkLine = document.AddLink(linkLine.Connector1, linkLine.Connector2);
if (ElementsWillLink != null)
{
var args = new ElementsLinkedArgs {
Connector1 = linkLine.Connector1, Connector2 = linkLine.Connector2, Element1 = linkLine.Connector1.ParentElement, Element2 = linkLine.Connector2.ParentElement, NewLink = linkLine
};
ElementsWillLink(this, args);
if (args.Cancel)
{
document.DeleteLink(linkLine);
connStart = null;
connEnd = null;
linkLine = null;
return;
}
}
OnElementConnected(new ElementConnectEventArgs(linkLine.Connector1.ParentElement, linkLine.Connector2.ParentElement, linkLine));
}
connStart = null;
connEnd = null;
linkLine = null;
}
private void EndAddLink()
{
if (connEnd != linkLine.Connector2)
{
linkLine.Connector1.RemoveLink(linkLine);
linkLine = document.AddLink(linkLine.Connector1, linkLine.Connector2);
OnElementConnected(new ElementConnectEventArgs(linkLine.Connector1.ParentElement, linkLine.Connector2.ParentElement, linkLine));
}
connStart = null;
connEnd = null;
linkLine = null;
}
public void SelectElements(Rectangle selectionRectangle)
{
selectedElements.EnabledCalc = false;
selectedNodes.EnabledCalc = false;
// Add all "hitable" elements
foreach (BaseElement element in elements)
{
if (element is IControllable)
{
IController ctrl = ((IControllable)element).GetController();
if (ctrl.HitTest(selectionRectangle))
{
if (!(element is ConnectorElement))
{
selectedElements.Add(element);
}
if (element is NodeElement)
{
selectedNodes.Add(element);
}
}
}
}
//if the seleciont isn't a expecific link, remove links
// without 2 elements in selection
if (selectedElements.Count > 1)
{
foreach (BaseElement el in elements)
{
BaseLinkElement lnk = el as BaseLinkElement;
if (lnk == null)
{
continue;
}
if ((!selectedElements.Contains(lnk.Connector1.ParentElement)) ||
(!selectedElements.Contains(lnk.Connector2.ParentElement)))
{
selectedElements.Remove(lnk);
}
}
}
selectedElements.EnabledCalc = true;
selectedNodes.EnabledCalc = true;
OnElementSelection(this, new ElementSelectionEventArgs(selectedElements));
}
public void DeleteElement(BaseElement el)
{
if ((el != null) && !(el is ConnectorElement))
{
//Delete link
if (el is BaseLinkElement)
{
BaseLinkElement lnk = (BaseLinkElement)el;
DeleteLink(lnk);
return;
}
//Delete node
if (el is NodeElement)
{
NodeElement conn = ((NodeElement)el);
foreach (ConnectorElement elconn in conn.Connectors)
{
BaseLinkElement lnk;
for (int i = elconn.Links.Count - 1; i >= 0; i--)
{
lnk = (BaseLinkElement)elconn.Links[i];
DeleteLink(lnk);
}
}
if (selectedNodes.Contains(el))
{
selectedNodes.Remove(el);
}
}
if (SelectedElements.Contains(el))
{
selectedElements.Remove(el);
}
elements.Remove(el);
el.OnRemovedFromDocument(new DocumentEventArgs {
Document = this
});
OnAppearancePropertyChanged(new EventArgs());
}
el = null;
}
public void DeleteLink(BaseLinkElement lnk)
{
if (lnk != null)
{
lnk.Connector1.RemoveLink(lnk);
lnk.Connector2.RemoveLink(lnk);
if (elements.Contains(lnk))
{
elements.Remove(lnk);
}
if (selectedElements.Contains(lnk))
{
selectedElements.Remove(lnk);
}
OnAppearancePropertyChanged(new EventArgs());
}
}
private void StartAddLink(ConnectorElement connStart, Point mousePoint)
{
if (document.Action == DesignerAction.Connect)
{
this.connStart = connStart;
this.connEnd = new ConnectorElement(connStart.ParentElement);
connEnd.Location = connStart.Location;
IMoveController ctrl = (IMoveController)((IControllable)connEnd).GetController();
ctrl.Start(mousePoint);
isAddLink = true;
linkLine = CreateElementInstance(connStart, connEnd);
this.Invalidate(linkLine, true);
OnElementConnecting(new ElementConnectEventArgs(connStart.ParentElement, null, linkLine));
}
}
internal void DrawSelections(Graphics g, Rectangle clippingRegion)
{
for (int i = selectedElements.Count - 1; i >= 0; i--)
{
if (selectedElements[i] is IControllable)
{
IController ctrl = ((IControllable)selectedElements[i]).GetController();
ctrl.DrawSelection(g);
if (selectedElements[i] is BaseLinkElement)
{
BaseLinkElement link = (BaseLinkElement)selectedElements[i];
ctrl = ((IControllable)link.Connector1).GetController();
ctrl.DrawSelection(g);
ctrl = ((IControllable)link.Connector2).GetController();
ctrl.DrawSelection(g);
}
}
}
}
protected virtual BaseLinkElement CreateElementInstance(ConnectorElement connStart, ConnectorElement connEnd)
{
BaseLinkElement linkLine;
switch (document.LinkType)
{
default:
case (LinkType.Straight):
linkLine = new StraightLinkElement(connStart, connEnd);
break;
case (LinkType.RightAngle):
linkLine = new RightAngleLinkElement(connStart, connEnd);
break;
}
linkLine.Visible = true;
linkLine.BorderColor = Color.FromArgb(150, Color.Black);
linkLine.BorderWidth = 1;
return(linkLine);
}
private void UpdateLinkPosition(NodeElement node)
{
foreach (ConnectorElement conn in node.Connectors)
{
foreach (BaseElement el in conn.Links)
{
BaseLinkElement lnk = (BaseLinkElement)el;
IController ctrl = ((IControllable)lnk).GetController();
if (ctrl is IMoveController)
{
IMoveController mctrl = (IMoveController)ctrl;
if (!mctrl.IsMoving)
{
lnk.NeedCalcLink = true;
}
}
else
{
lnk.NeedCalcLink = true;
}
if (lnk is ILabelElement)
{
LabelElement label = ((ILabelElement)lnk).Label;
ILabelController lblCtrl = ControllerHelper.GetLabelController(lnk);
if (lblCtrl != null)
{
lblCtrl.SetLabelPosition();
}
else
{
label.PositionBySite(lnk);
}
label.Invalidate();
}
}
}
}
public ElementConnectEventArgs(NodeElement node1, NodeElement node2, BaseLinkElement link)
{
this.node1 = node1;
this.node2 = node2;
this.link = link;
}
public ElementConnectEventArgs(NodeElement node1, NodeElement node2, BaseLinkElement link)
{
this.node1 = node1;
this.node2 = node2;
this.link = link;
}
internal void AddLink(BaseLinkElement lnk)
{
links.Add(lnk);
}
internal void RemoveLink(BaseLinkElement lnk)
{
links.Remove(lnk);
}
private void EndAddLink()
{
if (connEnd != linkLine.Connector2)
{
linkLine.Connector1.RemoveLink(linkLine);
linkLine = document.AddLink(linkLine.Connector1, linkLine.Connector2);
OnElementConnected(new ElementConnectEventArgs(linkLine.Connector1.ParentElement, linkLine.Connector2.ParentElement, linkLine));
}
connStart = null;
connEnd = null;
linkLine = null;
}
public void DeleteLink(BaseLinkElement lnk)
{
if (lnk != null)
{
lnk.Connector1.RemoveLink(lnk);
lnk.Connector2.RemoveLink(lnk);
if (elements.Contains(lnk))
elements.Remove(lnk);
if (selectedElements.Contains(lnk))
selectedElements.Remove(lnk);
OnAppearancePropertyChanged(new EventArgs());
}
}
internal void RemoveLink(BaseLinkElement lnk)
{
links.Remove(lnk);
}
internal void AddLink(BaseLinkElement lnk)
{
links.Add(lnk);
}
private void StartAddLink(ConnectorElement connStart, Point mousePoint)
{
if (document.Action == DesignerAction.Connect)
{
this.connStart = connStart;
this.connEnd = new ConnectorElement(connStart.ParentElement);
connEnd.Location = connStart.Location;
IMoveController ctrl = (IMoveController) ((IControllable) connEnd).GetController();
ctrl.Start(mousePoint);
isAddLink = true;
switch(document.LinkType)
{
case (LinkType.Straight):
linkLine = new StraightLinkElement(connStart, connEnd);
break;
case (LinkType.RightAngle):
linkLine = new RightAngleLinkElement(connStart, connEnd);
break;
}
linkLine.Visible = true;
linkLine.BorderColor = Color.FromArgb(150, Color.Black);
linkLine.BorderWidth = 1;
this.Invalidate(linkLine, true);
OnElementConnecting(new ElementConnectEventArgs(connStart.ParentElement, null, linkLine));
}
}
public void AddLink(BaseLinkElement lnk)
{
elements.Add(lnk);
lnk.AppearanceChanged += new EventHandler(element_AppearanceChanged);
OnAppearancePropertyChanged(new EventArgs());
}