public void OnLabelEditing(LabelEditingEventArgs args)
{
if (node.Labels.Count == 0)
{
OnLabelAdding(args);
return;
}
args.Label = node.Labels[0];
args.Handled = true;
}
/// <summary>
/// This method is only called when a label should be added to <see cref="owner" />.
/// </summary>
/// <remarks>This implementation prevents adding of more than two labels</remarks>
public override void OnLabelAdding(LabelEditingEventArgs args)
{
args.TextEditorInputModeConfigurator = ConfigureTextEditorInputMode;
// Prevent adding more than two labels...
if (owner.Labels.Count >= 2)
{
args.Cancel = true;
return;
}
base.OnLabelAdding(args);
}
/// <summary>This method is called when label should be edited.</summary>
/// <remarks>
/// If a label is edited directly, we either return it (if it is the second label) or prevent editing.
/// </remarks>
public override void OnLabelEditing(LabelEditingEventArgs args)
{
args.TextEditorInputModeConfigurator = ConfigureTextEditorInputMode;
if (label != null)
{
// We are directly editing the label
if (label.Owner != null && label == label.Owner.Labels[0])
{
// The first label is never editable
args.Label = null;
args.Cancel = true;
return;
}
//We are a dummy label or not the first label
//return the label and disallow editing
//If we are editing the first label, the framework will then try to add label by calling AddLabel
args.Label = label;
args.Handled = true;
return;
}
// Implicit editing - this is only reached if we are trying to edit labels for an owner which does not yet have any labels
if (owner == null)
{
base.OnLabelEditing(args);
return;
}
if (owner.Labels.Count <= 1)
{
// Add a second label instead (since we'll never edit the first one)
OnLabelAdding(args);
return;
}
// If more than one label, edit the second one
args.Label = owner.Labels[1];
args.Handled = true;
}
public void OnLabelAdding(LabelEditingEventArgs args)
{
var parameter = ChoreographyLabelModel.Instance.FindNextParameter(node);
ILabelStyle labelStyle;
if (parameter == ChoreographyLabelModel.NorthMessage || parameter == ChoreographyLabelModel.SouthMessage)
{
labelStyle = new ChoreographyMessageLabelStyle();
}
else
{
labelStyle = ((GraphControl)args.Context.CanvasControl).Graph.NodeDefaults.Labels.Style;
}
if (parameter == null)
{
parameter = ExteriorLabelModel.West;
}
args.LayoutParameter = parameter;
args.Owner = node;
args.Style = labelStyle;
args.Handled = true;
}
public void OnLabelEditing(LabelEditingEventArgs args)
{
args.TextEditorInputModeConfigurator = ConfigureTextEditorInputMode;
args.Label = label;
args.Handled = true;
}
public void OnLabelAdding(LabelEditingEventArgs args)
{
args.Cancel = true;
}