[CSS Grid Layout] Update grid-auto-flow to the new syntax

Source/core/rendering/RenderGrid.cpp

 /*
  * Copyright (C) 2011 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 193 matching lines @@
     RenderBlock::addChild(newChild, beforeChild);
 
     if (gridIsDirty())
         return;
 
     if (!newChild->isBox()) {
         dirtyGrid();
         return;
     }
 
-    if (style()->gridAutoFlow() != AutoFlowNone) {
+    // FIXME: Implement properly "stack" value in auto-placement algorithm.
+    if (style()->gridAutoFlow() != AutoFlowStackColumn && style()->gridAutoFlow() != AutoFlowStackRow) {
         // The grid needs to be recomputed as it might contain auto-placed items that will change their position.
         dirtyGrid();
         return;
     }
 
     RenderBox* newChildBox = toRenderBox(newChild);
     OwnPtr<GridSpan> rowPositions = GridResolvedPosition::resolveGridPositionsFromStyle(*style(), *newChildBox, ForRows);
     OwnPtr<GridSpan> columnPositions = GridResolvedPosition::resolveGridPositionsFromStyle(*style(), *newChildBox, ForColumns);
     if (!rowPositions || !columnPositions) {
         // The new child requires the auto-placement algorithm to run so we need to recompute the grid fully.
@@ skipping 28 matching lines @@
 
 void RenderGrid::removeChild(RenderObject* child)
 {
     RenderBlock::removeChild(child);
 
     if (gridIsDirty())
         return;
 
     ASSERT(child->isBox());
 
-    if (style()->gridAutoFlow() != AutoFlowNone) {
+    // FIXME: Implement properly "stack" value in auto-placement algorithm.
+    if (style()->gridAutoFlow() != AutoFlowStackColumn && style()->gridAutoFlow() != AutoFlowStackRow) {
         // The grid needs to be recomputed as it might contain auto-placed items that will change their position.
         dirtyGrid();
         return;
     }
 
     const RenderBox* childBox = toRenderBox(child);
     GridCoordinate coordinate = m_gridItemCoordinate.take(childBox);
 
     for (GridSpan::iterator row = coordinate.rows.begin(); row != coordinate.rows.end(); ++row) {
         for (GridSpan::iterator column = coordinate.columns.begin(); column != coordinate.columns.end(); ++column) {
@@ skipping 529 matching lines @@
             else
                 specifiedMajorAxisAutoGridItems.append(child);
             continue;
         }
         insertItemIntoGrid(child, GridCoordinate(*rowPositions, *columnPositions));
     }
 
     ASSERT(gridRowCount() >= style()->gridTemplateRows().size());
     ASSERT(gridColumnCount() >= style()->gridTemplateColumns().size());
 
-    if (autoFlow == AutoFlowNone) {
+    // FIXME: Implement properly "stack" value in auto-placement algorithm.
+    if (autoFlow == AutoFlowStackColumn || autoFlow == AutoFlowStackRow) {
         // If we did collect some grid items, they won't be placed thus never laid out.
         ASSERT(!autoMajorAxisAutoGridItems.size());
         ASSERT(!specifiedMajorAxisAutoGridItems.size());
         return;
     }
 
     placeSpecifiedMajorAxisItemsOnGrid(specifiedMajorAxisAutoGridItems);
     placeAutoMajorAxisItemsOnGrid(autoMajorAxisAutoGridItems);
 
     m_grid.shrinkToFit();
@@ skipping 102 matching lines @@
         if (!emptyGridArea)
             emptyGridArea = createEmptyGridAreaAtSpecifiedPositionsOutsideGrid(gridItem, autoPlacementMinorAxisDirection(), minorAxisPositions);
     }
 
     insertItemIntoGrid(gridItem, *emptyGridArea);
 }
 
 GridTrackSizingDirection RenderGrid::autoPlacementMajorAxisDirection() const
 {
     GridAutoFlow flow = style()->gridAutoFlow();
-    ASSERT(flow != AutoFlowNone);
-    return (flow == AutoFlowColumn) ? ForColumns : ForRows;
+    return (flow == AutoFlowColumn || flow == AutoFlowColumnDense || flow == AutoFlowStackColumn) ? ForColumns : ForRows;
 }
 
 GridTrackSizingDirection RenderGrid::autoPlacementMinorAxisDirection() const
 {
     GridAutoFlow flow = style()->gridAutoFlow();
-    ASSERT(flow != AutoFlowNone);
-    return (flow == AutoFlowColumn) ? ForRows : ForColumns;
+    return (flow == AutoFlowColumn || flow == AutoFlowColumnDense || flow == AutoFlowStackColumn) ? ForRows : ForColumns;
 }
 
 void RenderGrid::dirtyGrid()
 {
     m_grid.resize(0);
     m_gridItemCoordinate.clear();
     m_gridIsDirty = true;
     m_gridItemsOverflowingGridArea.resize(0);
     m_gridItemsIndexesMap.clear();
 }
@@ skipping 282 matching lines @@
     if (isOutOfFlowPositioned())
         return "RenderGrid (positioned)";
     if (isAnonymous())
         return "RenderGrid (generated)";
     if (isRelPositioned())
         return "RenderGrid (relative positioned)";
     return "RenderGrid";
 }
 
 } // namespace WebCore