Repeat footers in paginated context

third_party/WebKit/Source/core/layout/LayoutTable.cpp

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
@@ skipping 632 matching lines @@
     }
     LayoutUnit current_available_logical_height =
         AvailableLogicalHeight(kIncludeMarginBorderPadding);
     TableHeightChangingValue table_height_changing =
         old_available_logical_height_ && old_available_logical_height_ !=
                                              current_available_logical_height
             ? kTableHeightChanging
             : kTableHeightNotChanging;
     old_available_logical_height_ = current_available_logical_height;
 
+    // Lay out table footer to get its raw height. This will help us decide
+    // if we can repeat it in each page/column.
+    if (LayoutTableSection* section = Footer()) {
+      if (section->GetPaginationBreakability() != kAllowAnyBreaks) {
+        section->LayoutIfNeeded();
+        int section_logical_height = section->CalcRowLogicalHeight();
+        section->SetLogicalHeight(LayoutUnit(section_logical_height));
+      }
+      section->DetermineIfFooterGroupShouldRepeat();
+      if (section->IsRepeatingFooterGroup()) {
+        LayoutUnit offset_for_table_footers =
+            state.HeightOffsetForTableFooters();
+        offset_for_table_footers += section->LogicalHeight();
+        SetRowOffsetFromRepeatingFooter(offset_for_table_footers);
+      }
+    }
+
     // Lay out table header group.
     if (LayoutTableSection* section = Header()) {
       LayoutSection(*section, layouter, section_logical_left,
                     table_height_changing);
       if (state.IsPaginated() && IsPageLogicalHeightKnown()) {
         // If the repeating header group allows at least one row of content,
         // then store the offset for other sections to offset their rows
         // against.
         if (section->IsRepeatingHeaderGroup()) {
           LayoutUnit offset_for_table_headers =
               state.HeightOffsetForTableHeaders();
           offset_for_table_headers += section->LogicalHeight();
           // Don't include any strut in the header group - we only want the
           // height from its content.
           if (LayoutTableRow* row = section->FirstRow())
             offset_for_table_headers -= row->PaginationStrut();
-          state.SetHeightOffsetForTableHeaders(offset_for_table_headers);
           SetRowOffsetFromRepeatingHeader(offset_for_table_headers);
         }
       }
     }
 
+    state.SetHeightOffsetForTableHeaders(RowOffsetFromRepeatingHeader());
+    state.SetHeightOffsetForTableFooters(RowOffsetFromRepeatingFooter());
     // Lay out table body groups, and column groups.
     for (LayoutObject* child = FirstChild(); child;
          child = child->NextSibling()) {
       if (child->IsTableSection()) {
         if (child != Header() && child != Footer()) {
           LayoutTableSection& section = *ToLayoutTableSection(child);
           LayoutSection(section, layouter, section_logical_left,
                         table_height_changing);
         }
       } else if (child->IsLayoutTableCol()) {
         child->LayoutIfNeeded();
       } else {
         DCHECK(child->IsTableCaption());
       }
     }
+    // Reset these so they don't affect the layout of footers or captions.
+    state.SetHeightOffsetForTableHeaders(LayoutUnit());
+    state.SetHeightOffsetForTableFooters(LayoutUnit());
 
     // Lay out table footer.
     if (LayoutTableSection* section = Footer()) {
       LayoutSection(*section, layouter, section_logical_left,
                     table_height_changing);
     }
 
     SetLogicalHeight(table_box_logical_top + border_and_padding_before);
 
     LayoutUnit computed_logical_height = LogicalHeightFromStyle();
@@ skipping 923 matching lines @@
     collapsed_outer_border_end_ = ComputeCollapsedOuterBorderEnd();
   }
 }
 
 bool LayoutTable::PaintedOutputOfObjectHasNoEffectRegardlessOfSize() const {
   return LayoutBlock::PaintedOutputOfObjectHasNoEffectRegardlessOfSize() &&
          !should_paint_all_collapsed_borders_;
 }
 
 }  // namespace blink