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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/tables/nsTableColGroupFrame.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/layout/tables/nsTableColGroupFrame.h b/layout/tables/nsTableColGroupFrame.h
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+/* -*- 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
+