made timerangelist a encapsulation rather than a derivation

Locks off functionality that really shouldn't be used.

app/widget/timelinewidget/timelinewidget.cpp

@@ -531,7 +531,7 @@ void TimelineWidget::DeleteSelected(bool ripple)
     TimeRangeList range_list;
 
     foreach (Block* b, blocks_to_delete) {
-      range_list.InsertTimeRange(TimeRange(b->in(), b->out()));
+      range_list.insert(TimeRange(b->in(), b->out()));
     }
 
     new TimelineRippleDeleteGapsAtRegionsCommand(GetConnectedNode(), range_list, command);
@@ -1512,7 +1512,7 @@ void TimelineWidget::EndRubberBandSelect()
 
 void TimelineWidget::AddSelection(const TimeRange &time, const TrackReference &track)
 {
-  selections_[track].InsertTimeRange(time);
+  selections_[track].insert(time);
 
   UpdateViewports(track.type());
 }
@@ -1524,7 +1524,7 @@ void TimelineWidget::AddSelection(TimelineViewBlockItem *item)
 
 void TimelineWidget::RemoveSelection(const TimeRange &time, const TrackReference &track)
 {
-  selections_[track].RemoveTimeRange(time);
+  selections_[track].remove(time);
 
   UpdateViewports(track.type());
 }

app/widget/timelinewidget/timelinewidgetselections.cpp

@@ -25,9 +25,7 @@ OLIVE_NAMESPACE_ENTER
 void TimelineWidgetSelections::ShiftTime(const rational &diff)
 {
   for (auto it=this->begin(); it!=this->end(); it++) {
-    for (auto it2=it.value().begin(); it2!=it.value().end(); it2++) {
-      (*it2) += diff;
-    }
+    it.value().shift(diff);
   }
 }
 
@@ -59,18 +57,14 @@ void TimelineWidgetSelections::ShiftTracks(Timeline::TrackType type, int diff)
 void TimelineWidgetSelections::TrimIn(const rational &diff)
 {
   for (auto it=this->begin(); it!=this->end(); it++) {
-    for (auto it2=it.value().begin(); it2!=it.value().end(); it2++) {
-      (*it2).set_in((*it2).in() + diff);
-    }
+    it.value().trim_in(diff);
   }
 }
 
 void TimelineWidgetSelections::TrimOut(const rational &diff)
 {
   for (auto it=this->begin(); it!=this->end(); it++) {
-    for (auto it2=it.value().begin(); it2!=it.value().end(); it2++) {
-      (*it2).set_out((*it2).out() + diff);
-    }
+    it.value().trim_out(diff);
   }
 }