Add m-esr52 at 52.6.0

1 files changed, 256 insertions, 0 deletions

diff --git a/layout/tables/nsTableColGroupFrame.h b/layout/tables/nsTableColGroupFrame.h
new file mode 100644
index 000000000..2a25fdc44
--- /dev/null
+++ b/layout/tables/nsTableColGroupFrame.h
@@ -0,0 +1,256 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nsTableColGroupFrame_h__
+#define nsTableColGroupFrame_h__
+
+#include "mozilla/Attributes.h"
+#include "nscore.h"
+#include "nsContainerFrame.h"
+#include "nsTableFrame.h"
+#include "mozilla/WritingModes.h"
+
+class nsTableColFrame;
+
+/**
+ * nsTableColGroupFrame
+ * data structure to maintain information about a single table cell's frame
+ *
+ * @author  sclark
+ */
+class nsTableColGroupFrame final : public nsContainerFrame
+{
+public:
+  NS_DECL_FRAMEARENA_HELPERS
+
+  // default constructor supplied by the compiler
+
+  /** instantiate a new instance of nsTableRowFrame.
+    * @param aPresShell the pres shell for this frame
+    *
+    * @return           the frame that was created
+    */
+  friend nsTableColGroupFrame* NS_NewTableColGroupFrame(nsIPresShell* aPresShell,
+                                                        nsStyleContext* aContext);
+
+  nsTableFrame* GetTableFrame() const
+  {
+    nsIFrame* parent = GetParent();
+    MOZ_ASSERT(parent && parent->GetType() == nsGkAtoms::tableFrame);
+    MOZ_ASSERT(!parent->GetPrevInFlow(),
+               "Col group should always be in a first-in-flow table frame");
+    return static_cast<nsTableFrame*>(parent);
+  }
+
+  /**
+   * ColGroups never paint anything, nor receive events.
+   */
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) override {}
+
+  /** A colgroup can be caused by three things:
+    * 1)	An element with table-column-group display
+    * 2)	An element with a table-column display without a
+	   *    table-column-group parent
+    * 3)	Cells that are not in a column (and hence get an anonymous
+	   *    column and colgroup).
+    * @return colgroup type
+    */
+  nsTableColGroupType GetColType() const;
+
+  /** Set the colgroup type based on the creation cause
+    * @param aType - the reason why this colgroup is needed
+    */
+  void SetColType(nsTableColGroupType aType);
+  
+  /** Real in this context are colgroups that come from an element
+    * with table-column-group display or wrap around columns that
+    * come from an element with table-column display. Colgroups
+    * that are the result of wrapping cells in an anonymous
+    * column and colgroup are not considered real here.
+    * @param aTableFrame - the table parent of the colgroups
+    * @return the last real colgroup
+    */
+  static nsTableColGroupFrame* GetLastRealColGroup(nsTableFrame* aTableFrame);
+
+  /** @see nsIFrame::DidSetStyleContext */
+  virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
+
+  virtual void SetInitialChildList(ChildListID     aListID,
+                                   nsFrameList&    aChildList) override;
+  virtual void AppendFrames(ChildListID     aListID,
+                            nsFrameList&    aFrameList) override;
+  virtual void InsertFrames(ChildListID     aListID,
+                            nsIFrame*       aPrevFrame,
+                            nsFrameList&    aFrameList) override;
+  virtual void RemoveFrame(ChildListID     aListID,
+                           nsIFrame*       aOldFrame) override;
+
+  /** remove the column aChild from the column group, if requested renumber
+    * the subsequent columns in this column group and all following column
+    * groups. see also ResetColIndices for this
+    * @param aChild       - the column frame that needs to be removed
+    * @param aResetSubsequentColIndices - if true the columns that follow
+    *                                     after aChild will be reenumerated
+    */
+  void RemoveChild(nsTableColFrame& aChild,
+                   bool             aResetSubsequentColIndices);
+
+  /** reflow of a column group is a trivial matter of reflowing
+    * the col group's children (columns), and setting this frame
+    * to 0-size.  Since tables are row-centric, column group frames
+    * don't play directly in the rendering game.  They do however
+    * maintain important state that effects table and cell layout.
+    */
+  virtual void Reflow(nsPresContext*           aPresContext,
+                      ReflowOutput&     aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus&          aStatus) override;
+
+  /**
+   * Get the "type" of the frame
+   *
+   * @see nsGkAtoms::tableColGroupFrame
+   */
+  virtual nsIAtom* GetType() const override;
+
+  virtual mozilla::WritingMode GetWritingMode() const override
+    { return GetTableFrame()->GetWritingMode(); }
+
+  /** Add column frames to the table storages: colframe cache and cellmap
+    * this doesn't change the mFrames of the colgroup frame.
+    * @param aFirstColIndex - the index at which aFirstFrame should be inserted
+    *                         into the colframe cache.
+    * @param aResetSubsequentColIndices - the indices of the col frames
+    *                                     after the insertion might need
+    *                                     an update
+    * @param aCols - an iterator that can be used to iterate over the col
+    *                frames to be added.  Once this is done, the frames on the
+    *                sbling chain of its .get() at that point will still need
+    *                their col indices updated.
+    * @result            - if there is no table frame or the table frame is not
+    *                      the first in flow it will return an error
+    */
+  nsresult AddColsToTable(int32_t                   aFirstColIndex,
+                          bool                      aResetSubsequentColIndices,
+                          const nsFrameList::Slice& aCols);
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+  void Dump(int32_t aIndent);
+#endif
+
+  /** returns the number of columns represented by this group.
+    * if there are col children, count them (taking into account the span of each)
+    * else, check my own span attribute.
+    */
+  virtual int32_t GetColCount() const;
+
+  /** first column on the child list */
+  nsTableColFrame * GetFirstColumn();
+  /** next sibling to aChildFrame that is a column frame, first column frame
+    * in the column group if aChildFrame is null
+    */
+  nsTableColFrame * GetNextColumn(nsIFrame *aChildFrame);
+
+  /** @return - the position of the first column in this colgroup in the table
+    * colframe cache.
+    */
+  int32_t GetStartColumnIndex();
+  
+  /** set the position of the first column in this colgroup in the table
+    * colframe cache.
+    */
+  void SetStartColumnIndex(int32_t aIndex);
+
+  /** helper method to get the span attribute for this colgroup */
+  int32_t GetSpan();
+
+  /** provide access to the mFrames list
+    */
+  nsFrameList& GetWritableChildList();
+
+  /** set the column index for all frames starting at aStartColFrame, it
+    * will also reset the column indices in all subsequent colgroups
+    * @param aFirstColGroup - start the reset operation inside this colgroup
+    * @param aFirstColIndex - first column that is reset should get this index
+    * @param aStartColFrame - if specified the reset starts with this column
+    *                         inside the colgroup; if not specified, the reset
+    *                         starts with the first column
+    */
+  static void ResetColIndices(nsIFrame*       aFirstColGroup,
+                              int32_t         aFirstColIndex,
+                              nsIFrame*       aStartColFrame = nullptr);
+
+  /**
+   * Gets inner border widths before collapsing with cell borders
+   * Caller must get istart border from previous column
+   * GetContinuousBCBorderWidth will not overwrite aBorder.IStart
+   * see nsTablePainter about continuous borders
+   */
+  void GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
+                                  mozilla::LogicalMargin& aBorder);
+  /**
+   * Set full border widths before collapsing with cell borders
+   * @param aForSide - side to set; only accepts bstart and bend
+   */
+  void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
+                                  BCPixelSize aPixelValue);
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override
+  {
+    return nsContainerFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
+  }
+  
+  virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) override;
+  virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) override;
+  virtual void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
+
+protected:
+  explicit nsTableColGroupFrame(nsStyleContext* aContext);
+
+  void InsertColsReflow(int32_t                   aColIndex,
+                        const nsFrameList::Slice& aCols);
+
+  virtual LogicalSides GetLogicalSkipSides(const ReflowInput* aReflowInput = nullptr) const override;
+
+  // data members
+  int32_t mColCount;
+  // the starting column index this col group represents. Must be >= 0. 
+  int32_t mStartColIndex;
+
+  // border width in pixels
+  BCPixelSize mBStartContBorderWidth;
+  BCPixelSize mBEndContBorderWidth;
+};
+
+inline nsTableColGroupFrame::nsTableColGroupFrame(nsStyleContext *aContext)
+: nsContainerFrame(aContext), mColCount(0), mStartColIndex(0)
+{ 
+  SetColType(eColGroupContent);
+}
+  
+inline int32_t nsTableColGroupFrame::GetStartColumnIndex()
+{  
+  return mStartColIndex;
+}
+
+inline void nsTableColGroupFrame::SetStartColumnIndex (int32_t aIndex)
+{
+  mStartColIndex = aIndex;
+}
+
+inline int32_t nsTableColGroupFrame::GetColCount() const
+{  
+  return mColCount;
+}
+
+inline nsFrameList& nsTableColGroupFrame::GetWritableChildList()
+{  
+  return mFrames;
+}
+
+#endif
+