Clean up some selection operations. Commonly when changing selection modes,

all of the selection needs to be redrawn so that is implmeneted in
Editor::InvalidateWholeSelection. Any extra selections should be discarded with
only the main remaining so that is Selection::DropAdditionalRanges.
Some default parameters led to less clarity so they no longer have default
values. Both Editor::MovePositionTo methods always returned 0 which was ignored
so they are now void. Some variables were made const.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/Selection.cxx b/src/Selection.cxx
index 52ed5774e..f4308b130 100644
--- a/src/Selection.cxx
+++ b/src/Selection.cxx
@@ -343,6 +343,10 @@ void Selection::DropSelection(size_t r) {
 	}
 }
 
+void Selection::DropAdditionalRanges() {
+	SetSelection(RangeMain());
+}
+
 void Selection::TentativeSelection(SelectionRange range) {
 	if (!tentativeMain) {
 		rangesSaved = ranges;