bool isConnectionRemoved = false;//this flag checks if the connection is removed first and then inserted. Only in this sequence we can raise the NodeConnectionsChanged event properly
void NodeRelationDescriptor_ConnectionsChanged(CollectionExEventArgs evtArgs)
{
if (evtArgs.Element != null)
{
ConnectorBase connector = ((EndPoint)evtArgs.Element).Container as ConnectorBase;
if (evtArgs.ChangeType == CollectionExChangeType.Remove)
{
isConnectionRemoved = true;
/*bool cancel = RaiseNodeConnectChangingEventHandler( new NodeConnectChangingEventArgs( connector.FromNode, connector.ToNode, evtArgs.ChangeType ) );
*
* if ( cancel )
* {
* evtArgs.Cancel = cancel;
* }*/
//else
//{
//}
}
else if (evtArgs.ChangeType == CollectionExChangeType.Insert && isConnectionRemoved)
{
//Raise the node connected event handler after the connection gets inserted.
RaiseNodeConnectChangedEventHandler(new NodeConnectChangedEventArgs(connector.FromNode, connector.ToNode, evtArgs.ChangeType));
}
}
}
public static void Model_ChildrenChangeComplete(CollectionExEventArgs evt)
{
foreach (Node n in evt.Elements)
{
if (n is FilledPath)
{
(n as FilledPath).FillStyle.ForeColor = Color.Yellow;
(n as FilledPath).FillStyle.Color = Color.Green;
if (evt.ChangeType == Syncfusion.Windows.Forms.Diagram.CollectionExChangeType.Insert)
{
MessageBox.Show(String.Concat(n.Name, " node added"), "Essential Suite Scripting", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else if (evt.ChangeType == Syncfusion.Windows.Forms.Diagram.CollectionExChangeType.Remove)
{
MessageBox.Show(String.Concat(n.Name, " node Removed"), "Essential Suite Scripting", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
}
void EventSink_NodeCollectionChanged(CollectionExEventArgs evtArgs)
{
if (evtArgs.ChangeType == CollectionExChangeType.Insert)
{
if (!(evtArgs.Element is ConnectorBase))
{
Group draggedNode = evtArgs.Element as Group;
foreach (Group node in this.managers)
{
// If the droppednode contains the pinpoint as that of manager node, connect both the nodes
if (draggedNode.ContainsPoint(node.PinPoint))
{
this.ConnectNodes(node, draggedNode);
}
}
// Update the layout for better appearance of nodes.
this.UpdateDiagramLayout();
}
}
}
public static void View_SelectionChanged(CollectionExEventArgs evt)
{
foreach (Node n in evt.Elements)
{
if (n is FilledPath)
{
FilledPath shapenode = (n as FilledPath);
Color fillcolor = shapenode.FillStyle.Color;
if (fillcolor == Color.Red)
{
shapenode.FillStyle.Color = Color.Green;
}
else if (fillcolor == Color.Green)
{
shapenode.FillStyle.Color = Color.Blue;
}
else
{
shapenode.FillStyle.Color = Color.Red;
}
}
}
}
void EventSink_NodeCollectionChanging(CollectionExEventArgs evtArgs)
{
listBox1.Items.Add("\nNodeCollectionChanging event Fired.\n");
}
void EventSink_SelectionListChanging(CollectionExEventArgs evtArgs)
{
listBox1.Items.Add("\nSelectionListChanging event Fired.\n");
}
protected override void Document_NodeCollectionChanged(CollectionExEventArgs evtArgs)
{
base.Document_NodeCollectionChanged(evtArgs);
if (_inited)
{
if (evtArgs.ChangeType != CollectionExChangeType.Set)
{
CheckSelection();
}
}
}
protected void OnSelectionChanged(CollectionExEventArgs evtArgs)
{
DiagramController controller = this.diagramComponent.Controller;
if (controller != null)
{
if (controller.SelectionList != null)
{
// Check for grouping and ungrouping tools available.
bool bGroupAvailable = false;
bool bGroupPresent = false;
if (controller.View.SelectionList.Count >= 2)
{
bGroupAvailable = true;
}
foreach (Node curNode in controller.View.SelectionList)
{
// Check for groups.
if (curNode is Group)
{
bGroupPresent = true;
break;
}
}
// Update group and ungroup tools.
this.barItemGroup.Enabled = bGroupAvailable;
this.barItemUngroup.Enabled = bGroupPresent;
SelectionFormat fmtSelection = controller.TextEditor.GetSelectionFormat(false);
if (fmtSelection.Valid)
{
// 1 - FontStyles
// Bold
barItemBoldText.Checked =
((fmtSelection.FontStyle & System.Drawing.FontStyle.Bold) == System.Drawing.FontStyle.Bold) ? true : false;
// Underline
barItemUnderlineText.Checked =
((fmtSelection.FontStyle & System.Drawing.FontStyle.Underline) == System.Drawing.FontStyle.Underline) ? true : false;
// Italic
barItemItalicText.Checked =
((fmtSelection.FontStyle & System.Drawing.FontStyle.Italic) == System.Drawing.FontStyle.Italic) ? true : false;
// Strikeout
barItemStrikeoutText.Checked =
((fmtSelection.FontStyle & System.Drawing.FontStyle.Strikeout) == System.Drawing.FontStyle.Strikeout) ? true : false;
// 2 - Alignment
switch (fmtSelection.Alignment)
{
case StringAlignment.Near:
this.CurrentAlignment = this.barItemAlignTextLeft;
break;
case StringAlignment.Center:
this.CurrentAlignment = this.barItemCenterText;
break;
case StringAlignment.Far:
this.CurrentAlignment = this.barItemAlignTextRight;
break;
}
// 3 - FamilyName
this.comboBoxBarItemFontFamily.TextBoxValue = fmtSelection.FontFamily;
// 4 - FontHeight
if (fmtSelection.FontHeight == 0)
{
this.comboBoxBarItemPointSize.TextBoxValue = string.Empty;
}
else
{
this.comboBoxBarItemPointSize.TextBoxValue = fmtSelection.FontHeight.ToString();
}
}
else
{
barItemBoldText.Checked = false;
barItemItalicText.Checked = false;
barItemUnderlineText.Checked = false;
barItemStrikeoutText.Checked = false;
}
}
}
}
void EventSink_ConnectionsChanging(CollectionExEventArgs evtArgs)
{
listBox1.Items.Add("\nConnectionsChanging event Fired.\n");
}
protected override void Document_NodeCollectionChanged(CollectionExEventArgs evtArgs)
{
base.Document_NodeCollectionChanged(evtArgs);
if (evtArgs.ChangeType == CollectionExChangeType.Insert && !internalChanging)
{
ActivateTool(ToolDescriptor.SelectTool);
}
}
