/// <summary>
/// Changes the value of a comment.
/// </summary>
/// <param name="nodeIndex">Index of the state with the comment to change.</param>
/// <param name="text">The new text.</param>
/// <param name="oldCaretPosition">The old caret position.</param>
/// <param name="newCaretPosition">The new caret position.</param>
/// <param name="changeCaretBeforeText">True if the caret should be changed before the text, to preserve the caret invariant.</param>
public virtual void ChangeCommentAndCaretPosition(IFocusIndex nodeIndex, string text, int oldCaretPosition, int newCaretPosition, bool changeCaretBeforeText)
{
Contract.RequireNotNull(nodeIndex, out IFocusIndex NodeIndex);
Contract.RequireNotNull(text, out string Text);
Debug.Assert(StateTable.ContainsKey(NodeIndex));
System.Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoChangeComment(operation);
System.Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoChangeComment(operation);
IFocusNodeState State = (IFocusNodeState)StateTable[NodeIndex];
FocusChangeCommentOperation Operation = CreateChangeCommentOperation(State.Node, Text, oldCaretPosition, newCaretPosition, changeCaretBeforeText, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
private protected virtual bool IsSameChangeCommentOperationFocus(FocusChangeCommentOperation operation)
{
Node Node = null;
if (operation.State.ParentIndex is IFocusNodeIndex AsNodeIndex)
{
Node = AsNodeIndex.Node;
}
else if (operation.State is IFocusOptionalNodeState AsOptionalNodeState && AsOptionalNodeState.ParentInner.IsAssigned)
{
Node = AsOptionalNodeState.Node;
}
Debug.Assert(Node != null);
Node FocusedNode = null;
IFocusFrame FocusedFrame = null;
Focus.GetLocationInSourceCode(out FocusedNode, out FocusedFrame);
return(FocusedNode == Node && FocusedFrame is IFocusCommentFrame);
}