AccessibilitySnapshot CalculateSnapshot(Line[] lines, Line[] selectedLines)
{
// add a space at the end for the space between the prompt and the caret
if (terminal.Buffers.IsAlternateBuffer)
{
if (lines.Length > 0)
{
var lastLine = lines [lines.Length - 1];
lastLine.Add(new LineFragment(" ", lastLine.StartLine, lastLine.Length));
}
}
var count = CountLines(lines);
int caret = CalculateCaretPosition(count.Item1);
AccessibilitySnapshot.Range selectedRange = new AccessibilitySnapshot.Range();
if (selectedLines != null)
{
selectedRange = CalculateSelectedTextRange(lines, selectedLines);
}
AccessibilitySnapshot.Range visble = new AccessibilitySnapshot.Range {
Start = 0, Length = count.Item2
};
var result = new AccessibilitySnapshot(lines, visble, caret, selectedRange);
return(result);
}
public AccessibilitySnapshot GetSnapshot()
{
if (cache == null)
{
Line [] selectedLines = null;
if (activeSelection.Active)
{
selectedLines = activeSelection.GetSelectedLines();
}
var result = CalculateSnapshot(selectedLines);
cache = result;
}
return(cache);
}
public void Invalidate()
{
cache = null;
}
