/// <summary>
/// Handles finding occurrences, selecting and adding to current selections
/// </summary>
/// <param name="reverseDirection">Search document in reverse direction for an occurrence</param>
/// <param name="exactMatch">Search document for an exact match, overrides find-dialog settings</param>
internal void SelectNextOccurrence(bool reverseDirection = false, bool exactMatch = false)
{
// Caret placed on a word, but nothing selected
if (!Selections.Any() && view.Selection.IsEmpty)
{
SelectCurrentWord(view.Caret.Position.BufferPosition);
return;
}
// First selection is selected by user, future selections will be located and selected on command-invocation
if (!Selections.Any() && !view.Selection.IsEmpty)
{
AddCurrentSelectionToSelections();
}
// Multiple selections
if (Selections.Any())
{
// Select words at caret again, this is where we have abandoned selections and goes to carets
if (Selections.Any(s => !s.IsSelection()))
{
var oldSelections = Selections;
Selections = new List <Selection>();
foreach (var selection in oldSelections)
{
if (!selection.IsSelection())
{
view.Caret.MoveTo(selection.Caret.GetPoint(Snapshot));
SelectCurrentWord(selection.Caret.GetPoint(Snapshot));
}
else
{
Selections.Add(selection);
}
}
}
else
{
var orderedSelections = HasWrappedDocument
? Selections
: Selections.OrderBy(n => n.Caret.GetPosition(Snapshot)).ToList();
var startSelection = reverseDirection && !HasWrappedDocument
? orderedSelections.First()
: orderedSelections.Last();
var startIndex = reverseDirection ?
startSelection.Start?.GetPosition(Snapshot) ?? startSelection.Caret.GetPosition(Snapshot)
: startSelection.End?.GetPosition(Snapshot) ?? startSelection.Caret.GetPosition(Snapshot);
var occurrence = textSearchService.FindNext(
startIndex,
true,
GetFindData(reverseDirection, exactMatch)
);
if (occurrence.HasValue)
{
ProcessFoundOccurrence(occurrence.Value);
if (!reverseDirection && Selections.Last().Caret.GetPosition(Snapshot) <
Selections.First().Caret.GetPosition(Snapshot))
{
HasWrappedDocument = true;
}
if (reverseDirection && Selections.Last().Caret.GetPosition(Snapshot) >
Selections.First().Caret.GetPosition(Snapshot))
{
HasWrappedDocument = true;
}
}
}
view.Selection.Clear();
view.Caret.MoveTo(Selections.Last().Caret.GetPoint(Snapshot));
}
}
/// <summary>
/// Handles finding occurrences, selecting and adding to current selections
/// </summary>
/// <param name="reverseDirection">Search document in reverse direction for an occurrence</param>
/// <param name="exactMatch">Search document for an exact match, overrides find-dialog settings</param>
internal void SelectNextOccurrence(bool reverseDirection = false, bool exactMatch = false)
{
// Caret placed on a word, but nothing selected
if (!Selections.Any() && view.Selection.IsEmpty)
{
SelectCurrentWord(view.Caret.Position.BufferPosition);
return;
}
// First selection is selected by user, future selections will be located and selected on command-invocation
if (!Selections.Any() && !view.Selection.IsEmpty)
{
AddCurrentSelectionToSelections();
}
// Multiple selections
if (Selections.Any())
{
// Select words at caret again, this is where we have abandoned selections and goes to carets
if (Selections.Any(s => !s.IsSelection()))
{
var oldSelections = Selections;
Selections = new List <Selection>();
// Note: The list is in reverse order to fix a bug in EditorOperations.SelectCurrentWord()
foreach (var selection in oldSelections.OrderByDescending(n => n.Caret.GetPosition(Snapshot)))
{
if (!selection.IsSelection())
{
view.Caret.MoveTo(selection.Caret.GetPoint(Snapshot));
SelectCurrentWord(selection.Caret.GetPoint(Snapshot));
}
else
{
Selections.Add(selection);
}
}
}
else
{
var orderedSelections = Selections.OrderBy(n => n.Caret.GetPosition(Snapshot)).ToList();
var startIndex = ExtensionOptions.Instance.InwardSelection ^ reverseDirection ? 0 : orderedSelections.Count - 1;
var direction = reverseDirection ? -1 : 1;
var index = startIndex;
do
{
var position = reverseDirection
? orderedSelections[index].Start.GetPosition(Snapshot)
: orderedSelections[index].End.GetPosition(Snapshot);
index = (index + direction + orderedSelections.Count) % orderedSelections.Count;
if (textSearchService.FindNext(position, true, GetFindData(reverseDirection, exactMatch))
is SnapshotSpan occurrence &&
!orderedSelections[index].OverlapsWith(occurrence, Snapshot))
{
ProcessFoundOccurrence(occurrence);
break;
}
} while (startIndex != index);
}
view.Selection.Clear();
view.Caret.MoveTo(Selections.Last().Caret.GetPoint(Snapshot));
}
}