private bool MoveRainbow(bool previous, RainbowHighlightMode mode)
{
SnapshotPoint bufferPos;
if (!RainbowProvider.TryMapCaretToBuffer(this.textView, out bufferPos))
{
return(false);
}
ITextBuffer buffer = bufferPos.Snapshot.TextBuffer;
RainbowProvider provider = buffer.Get <RainbowProvider>();
if (provider == null)
{
return(false);
}
var braces = provider.BufferBraces.GetBracePairFromPosition(bufferPos, mode);
if (braces == null)
{
return(false);
}
if (previous && braces.Item1.Position == bufferPos.Position - 1)
{
// if we're on the opening brace, jump to the previous one
braces = provider.BufferBraces.GetBracePairFromPosition(bufferPos - 1, mode);
}
else if (!previous && braces.Item2.Position == bufferPos.Position)
{
// if we're on the closing brace, jump to the previous one
braces = provider.BufferBraces.GetBracePairFromPosition(bufferPos + 1, mode);
}
if (braces == null)
{
return(false);
}
if (previous)
{
SnapshotPoint opening = braces.Item1.ToPoint(bufferPos.Snapshot);
MoveCaretTo(opening + 1);
}
else
{
SnapshotPoint closing = braces.Item2.ToPoint(bufferPos.Snapshot);
MoveCaretTo(closing);
}
return(true);
}
private void StartRainbowHighlight(ITextView view, RainbowHighlightMode mode)
{
if (startedEffect)
{
return;
}
startedEffect = true;
SnapshotPoint bufferPos;
if (!RainbowProvider.TryMapCaretToBuffer(view, out bufferPos))
{
return;
}
ITextBuffer buffer = bufferPos.Snapshot.TextBuffer;
RainbowProvider provider = buffer.Get <RainbowProvider>();
if (provider == null)
{
return;
}
var braces = provider.BufferBraces.GetBracePairFromPosition(bufferPos, mode);
if (braces == null)
{
return;
}
SnapshotPoint opening = braces.Item1.ToPoint(bufferPos.Snapshot);
SnapshotPoint closing = braces.Item2.ToPoint(bufferPos.Snapshot);
if (RainbowProvider.TryMapToView(view, opening, out opening) &&
RainbowProvider.TryMapToView(view, closing, out closing))
{
RainbowHighlight highlight = RainbowHighlight.Get(view);
if (highlight != null)
{
highlight.Start(opening, closing, braces.Item1.Depth);
}
}
}