/// <summary>
/// Executes the action on a certain <see cref="TextArea"/>.
/// </summary>
/// <param name="textArea">The text area on which to execute the action.</param>
public override void Execute(TextArea textArea)
{
if (textArea.Document.ReadOnly)
{
return;
}
string commentStart = null;
if (textArea.Document.HighlightingStrategy.Properties.ContainsKey("BlockCommentBegin"))
{
commentStart = textArea.Document.HighlightingStrategy.Properties["BlockCommentBegin"];
}
string commentEnd = null;
if (textArea.Document.HighlightingStrategy.Properties.ContainsKey("BlockCommentEnd"))
{
commentEnd = textArea.Document.HighlightingStrategy.Properties["BlockCommentEnd"];
}
if (String.IsNullOrEmpty(commentStart) || String.IsNullOrEmpty(commentEnd))
{
return;
}
int selectionStartOffset;
int selectionEndOffset;
if (textArea.SelectionManager.HasSomethingSelected)
{
selectionStartOffset = textArea.SelectionManager.Selections[0].Offset;
selectionEndOffset = textArea.SelectionManager.Selections[textArea.SelectionManager.Selections.Count - 1].EndOffset;
}
else
{
selectionStartOffset = textArea.Caret.Offset;
selectionEndOffset = selectionStartOffset;
}
BlockCommentRegion commentRegion = FindSelectedCommentRegion(textArea.Document, commentStart, commentEnd, selectionStartOffset, selectionEndOffset);
textArea.Document.UndoStack.StartUndoGroup();
if (commentRegion != null)
{
RemoveComment(textArea.Document, commentRegion);
}
else if (textArea.SelectionManager.HasSomethingSelected)
{
SetCommentAt(textArea.Document, selectionStartOffset, selectionEndOffset, commentStart, commentEnd);
}
textArea.Document.UndoStack.EndUndoGroup();
textArea.Document.CommitUpdate();
textArea.AutoClearSelection = false;
}
/// <summary>
/// Determines whether the specified <see cref="Object"></see> is equal to the current <see cref="Object"></see>.
/// </summary>
/// <param name="obj">The <see cref="Object"></see> to compare with the current <see cref="Object"></see>.</param>
/// <returns>
/// true if the specified <see cref="Object"></see> is equal to the current <see cref="Object"></see>; otherwise, false.
/// </returns>
public override bool Equals(object obj)
{
BlockCommentRegion other = obj as BlockCommentRegion;
if (other == null)
{
return(false);
}
return(commentStart == other.commentStart &&
commentEnd == other.commentEnd &&
startOffset == other.startOffset &&
endOffset == other.endOffset);
}
static void RemoveComment(IDocument document, BlockCommentRegion commentRegion)
{
document.Remove(commentRegion.EndOffset, commentRegion.CommentEnd.Length);
document.Remove(commentRegion.StartOffset, commentRegion.CommentStart.Length);
}
static void RemoveComment(IDocument document, BlockCommentRegion commentRegion)
{
document.Remove(commentRegion.EndOffset, commentRegion.CommentEnd.Length);
document.Remove(commentRegion.StartOffset, commentRegion.CommentStart.Length);
}
