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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
/* rendering object for HTML <frameset> elements */
#ifndef nsHTMLFrameset_h___
#define nsHTMLFrameset_h___
#include "mozilla/Attributes.h"
#include "mozilla/UniquePtr.h"
#include "nsContainerFrame.h"
#include "nsColor.h"
class nsIContent;
class nsPresContext;
struct nsRect;
struct nsSize;
class nsAtom;
class nsHTMLFramesetBorderFrame;
class nsHTMLFramesetFrame;
// defined at HTMLFrameSetElement.h
struct nsFramesetSpec;
struct nsBorderColor {
nscolor mLeft;
nscolor mRight;
nscolor mTop;
nscolor mBottom;
nsBorderColor() { Set(NO_COLOR); }
~nsBorderColor() = default;
void Set(nscolor aColor) { mLeft = mRight = mTop = mBottom = aColor; }
enum nsFrameborder {
eFrameborder_Yes = 0,
struct nsFramesetDrag {
nsHTMLFramesetFrame* mSource; // frameset whose border was dragged to cause
// the resize
int32_t mIndex; // index of left col or top row of effected area
int32_t mChange; // pos for left to right or top to bottom, neg otherwise
bool mVertical; // vertical if true, otherwise horizontal
void Reset(bool aVertical, int32_t aIndex, int32_t aChange,
nsHTMLFramesetFrame* aSource);
void UnSet();
* nsHTMLFramesetFrame
class nsHTMLFramesetFrame final : public nsContainerFrame {
explicit nsHTMLFramesetFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext);
virtual ~nsHTMLFramesetFrame();
virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
virtual void SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList) override;
static bool gDragInProgress;
void GetSizeOfChild(nsIFrame* aChild, mozilla::WritingMode aWM,
mozilla::LogicalSize& aSize);
void GetSizeOfChildAt(int32_t aIndexInParent, mozilla::WritingMode aWM,
mozilla::LogicalSize& aSize, nsIntPoint& aCellIndex);
virtual nsresult HandleEvent(nsPresContext* aPresContext,
mozilla::WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) override;
mozilla::Maybe<Cursor> GetCursor(const nsPoint&) override;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
virtual nsresult GetFrameName(nsAString& aResult) const override;
void StartMouseDrag(nsPresContext* aPresContext,
nsHTMLFramesetBorderFrame* aBorder,
mozilla::WidgetGUIEvent* aEvent);
void MouseDrag(nsPresContext* aPresContext, mozilla::WidgetGUIEvent* aEvent);
void EndMouseDrag(nsPresContext* aPresContext);
nsFrameborder GetParentFrameborder() { return mParentFrameborder; }
void SetParentFrameborder(nsFrameborder aValue) {
mParentFrameborder = aValue;
nsFramesetDrag& GetDrag() { return mDrag; }
void RecalculateBorderResize();
void Scale(nscoord aDesired, int32_t aNumIndicies, int32_t* aIndicies,
int32_t aNumItems, int32_t* aItems);
void CalculateRowCol(nsPresContext* aPresContext, nscoord aSize,
int32_t aNumSpecs, const nsFramesetSpec* aSpecs,
nscoord* aValues);
void GenerateRowCol(nsPresContext* aPresContext, nscoord aSize,
int32_t aNumSpecs, const nsFramesetSpec* aSpecs,
nscoord* aValues, nsString& aNewAttr);
virtual void GetDesiredSize(nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
ReflowOutput& aDesiredSize);
int32_t GetBorderWidth(nsPresContext* aPresContext,
bool aTakeForcingIntoAccount);
int32_t GetParentBorderWidth() { return mParentBorderWidth; }
void SetParentBorderWidth(int32_t aWidth) { mParentBorderWidth = aWidth; }
nscolor GetParentBorderColor() { return mParentBorderColor; }
void SetParentBorderColor(nscolor aColor) { mParentBorderColor = aColor; }
nsFrameborder GetFrameBorder();
nsFrameborder GetFrameBorder(nsIContent* aContent);
nscolor GetBorderColor();
nscolor GetBorderColor(nsIContent* aFrameContent);
bool GetNoResize(nsIFrame* aChildFrame);
void ReflowPlaceChild(nsIFrame* aChild, nsPresContext* aPresContext,
const ReflowInput& aReflowInput, nsPoint& aOffset,
nsSize& aSize, nsIntPoint* aCellIndex = 0);
bool CanResize(bool aVertical, bool aLeft);
bool CanChildResize(bool aVertical, bool aLeft, int32_t aChildX);
void SetBorderResize(nsHTMLFramesetBorderFrame* aBorderFrame);
template <typename T, class D = mozilla::DefaultDelete<T>>
using UniquePtr = mozilla::UniquePtr<T, D>;
nsFramesetDrag mDrag;
nsBorderColor mEdgeColors;
nsHTMLFramesetBorderFrame* mDragger;
nsHTMLFramesetFrame* mTopLevelFrameset;
UniquePtr<nsHTMLFramesetBorderFrame*[]> mVerBorders; // vertical borders
UniquePtr<nsHTMLFramesetBorderFrame*[]> mHorBorders; // horizontal borders
mChildFrameborder; // the frameborder attr of children
UniquePtr<nsBorderColor[]> mChildBorderColors;
UniquePtr<nscoord[]> mRowSizes; // currently computed row sizes
UniquePtr<nscoord[]> mColSizes; // currently computed col sizes
mozilla::LayoutDeviceIntPoint mFirstDragPoint;
int32_t mNumRows;
int32_t mNumCols;
int32_t mNonBorderChildCount;
int32_t mNonBlankChildCount;
int32_t mEdgeVisibility;
nsFrameborder mParentFrameborder;
nscolor mParentBorderColor;
int32_t mParentBorderWidth;
int32_t mPrevNeighborOrigSize; // used during resize
int32_t mNextNeighborOrigSize;
int32_t mMinDrag;
int32_t mChildCount;