Templatize FrameSelection::setNonDirectionalSelectionIfNeede function

Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 173 matching lines @@
         visibleExtent = VisiblePosition(extent.positionAtLeftBoundaryOfBiDiRun());
         return;
     }
 
     if (extent.atRightBoundaryOfBidiRun() && extent.isEquivalent(base.rightBoundaryOfBidiRun(extent.bidiLevelOnLeft()))) {
         visibleExtent = VisiblePosition(extent.positionAtRightBoundaryOfBiDiRun());
         return;
     }
 }
 
-void FrameSelection::setNonDirectionalSelectionIfNeeded(const VisibleSelection& passedNewSelection, TextGranularity granularity,
+template <typename Strategy>
+void FrameSelection::setNonDirectionalSelectionIfNeededAlgorithm(const VisibleSelection& passedNewSelection, TextGranularity granularity,
     EndPointsAdjustmentMode endpointsAdjustmentMode)
 {
     VisibleSelection newSelection = passedNewSelection;
     bool isDirectional = shouldAlwaysUseDirectionalSelection(m_frame) || newSelection.isDirectional();
 
-    VisiblePosition base = m_originalBase.isNotNull() ? m_originalBase : newSelection.visibleBase();
+    VisiblePosition base = m_originalBase.isNotNull() ? m_originalBase : VisiblePosition(Strategy::selectionBase(newSelection));
     VisiblePosition newBase = base;
-    VisiblePosition extent = newSelection.visibleExtent();
+    VisiblePosition extent(Strategy::selectionExtent(newSelection));
     VisiblePosition newExtent = extent;
     if (endpointsAdjustmentMode == AdjustEndpointsAtBidiBoundary)
         adjustEndpointsAtBidiBoundary(newBase, newExtent);
 
     if (newBase != base || newExtent != extent) {
         m_originalBase = base;
         newSelection.setBase(newBase);
         newSelection.setExtent(newExtent);
     } else if (m_originalBase.isNotNull()) {
-        if (m_selection.base() == newSelection.base())
+        if (Strategy::selectionBase(m_selection) == Strategy::selectionBase(newSelection))
             newSelection.setBase(m_originalBase);
         m_originalBase.clear();
     }
 
     newSelection.setIsDirectional(isDirectional); // Adjusting base and extent will make newSelection always directional
-    if (m_selection == newSelection)
+    if (Strategy::equalSelections(m_selection, newSelection))
         return;
 
     setSelection(newSelection, granularity);
 }
 
+void FrameSelection::setNonDirectionalSelectionIfNeeded(const VisibleSelection& passedNewSelection, TextGranularity granularity, EndPointsAdjustmentMode endpointsAdjustmentMode)
+{
+    setNonDirectionalSelectionIfNeededAlgorithm<VisibleSelection::InDOMTree>(passedNewSelection, granularity, endpointsAdjustmentMode);
+}
+
 void FrameSelection::setSelection(const VisibleSelection& newSelection, SetSelectionOptions options, CursorAlignOnScroll align, TextGranularity granularity)
 {
     if (m_granularityStrategy && (options & FrameSelection::DoNotClearStrategy) == 0)
         m_granularityStrategy->Clear();
     bool closeTyping = options & CloseTyping;
     bool shouldClearTypingStyle = options & ClearTypingStyle;
     EUserTriggered userTriggered = selectionOptionsToUserTriggered(options);
 
     VisibleSelection s = validateSelection(newSelection);
     if (shouldAlwaysUseDirectionalSelection(m_frame))
@@ skipping 1739 matching lines @@
 
 void showTree(const blink::FrameSelection* sel)
 {
     if (sel)
         sel->showTreeForThis();
     else
         fprintf(stderr, "Cannot showTree for (nil) FrameSelection.\n");
 }
 
 #endif