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nsFrameSetFrame.cpp
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nsFrameSetFrame.cpp
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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/. */
/* rendering object for HTML <frameset> elements */
#include "mozilla/DebugOnly.h"
#include "mozilla/Likely.h"
#include "nsCOMPtr.h"
#include "nsFrameSetFrame.h"
#include "nsGenericHTMLElement.h"
#include "nsAttrValueInlines.h"
#include "nsLeafFrame.h"
#include "nsContainerFrame.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIComponentManager.h"
#include "nsIStreamListener.h"
#include "nsIURL.h"
#include "nsIDocument.h"
#include "nsINodeInfo.h"
#include "nsView.h"
#include "nsViewManager.h"
#include "nsWidgetsCID.h"
#include "nsGkAtoms.h"
#include "nsStyleCoord.h"
#include "nsStyleConsts.h"
#include "nsStyleContext.h"
#include "nsHTMLParts.h"
#include "nsGUIEvent.h"
#include "nsRenderingContext.h"
#include "nsIServiceManager.h"
#include "nsIDOMMutationEvent.h"
#include "nsINameSpaceManager.h"
#include "nsCSSAnonBoxes.h"
#include "nsAutoPtr.h"
#include "nsStyleSet.h"
#include "mozilla/dom/Element.h"
#include "nsDisplayList.h"
#include "nsNodeUtils.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/HTMLFrameSetElement.h"
#include "mozilla/LookAndFeel.h"
#include "nsSubDocumentFrame.h"
using namespace mozilla;
using namespace mozilla::dom;
// masks for mEdgeVisibility
#define LEFT_VIS 0x0001
#define RIGHT_VIS 0x0002
#define TOP_VIS 0x0004
#define BOTTOM_VIS 0x0008
#define ALL_VIS 0x000F
#define NONE_VIS 0x0000
/*******************************************************************************
* nsFramesetDrag
******************************************************************************/
nsFramesetDrag::nsFramesetDrag()
{
UnSet();
}
void nsFramesetDrag::Reset(bool aVertical,
int32_t aIndex,
int32_t aChange,
nsHTMLFramesetFrame* aSource)
{
mVertical = aVertical;
mIndex = aIndex;
mChange = aChange;
mSource = aSource;
}
void nsFramesetDrag::UnSet()
{
mVertical = true;
mIndex = -1;
mChange = 0;
mSource = nullptr;
}
/*******************************************************************************
* nsHTMLFramesetBorderFrame
******************************************************************************/
class nsHTMLFramesetBorderFrame : public nsLeafFrame
{
public:
NS_DECL_FRAMEARENA_HELPERS
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor);
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
bool GetVisibility() { return mVisibility || mVisibilityOverride; }
void SetVisibility(bool aVisibility);
void SetColor(nscolor aColor);
void PaintBorder(nsRenderingContext& aRenderingContext, nsPoint aPt);
protected:
nsHTMLFramesetBorderFrame(nsStyleContext* aContext, int32_t aWidth, bool aVertical, bool aVisible);
virtual ~nsHTMLFramesetBorderFrame();
virtual nscoord GetIntrinsicWidth();
virtual nscoord GetIntrinsicHeight();
// the prev and next neighbors are indexes into the row (for a horizontal border) or col (for
// a vertical border) of nsHTMLFramesetFrames or nsHTMLFrames
int32_t mPrevNeighbor;
int32_t mNextNeighbor;
nscolor mColor;
int32_t mWidth;
bool mVertical;
bool mVisibility;
bool mVisibilityOverride;
bool mCanResize;
friend class nsHTMLFramesetFrame;
};
/*******************************************************************************
* nsHTMLFramesetBlankFrame
******************************************************************************/
class nsHTMLFramesetBlankFrame : public nsLeafFrame
{
public:
NS_DECL_FRAMEARENA_HELPERS
#ifdef DEBUG
NS_IMETHOD List(FILE* out,
int32_t aIndent,
uint32_t aFlags = 0) const MOZ_OVERRIDE;
#endif
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
protected:
nsHTMLFramesetBlankFrame(nsStyleContext* aContext) : nsLeafFrame(aContext) {}
virtual ~nsHTMLFramesetBlankFrame();
virtual nscoord GetIntrinsicWidth();
virtual nscoord GetIntrinsicHeight();
friend class nsHTMLFramesetFrame;
friend class nsHTMLFrameset;
};
/*******************************************************************************
* nsHTMLFramesetFrame
******************************************************************************/
bool nsHTMLFramesetFrame::gDragInProgress = false;
#define kFrameResizePref "layout.frames.force_resizability"
#define DEFAULT_BORDER_WIDTH_PX 6
nsHTMLFramesetFrame::nsHTMLFramesetFrame(nsStyleContext* aContext)
: nsContainerFrame(aContext)
{
mNumRows = 0;
mRowSizes = nullptr;
mNumCols = 0;
mColSizes = nullptr;
mEdgeVisibility = 0;
mParentFrameborder = eFrameborder_Yes; // default
mParentBorderWidth = -1; // default not set
mParentBorderColor = NO_COLOR; // default not set
mFirstDragPoint.x = mFirstDragPoint.y = 0;
mMinDrag = nsPresContext::CSSPixelsToAppUnits(2);
mNonBorderChildCount = 0;
mNonBlankChildCount = 0;
mDragger = nullptr;
mChildCount = 0;
mTopLevelFrameset = nullptr;
mEdgeColors.Set(NO_COLOR);
mVerBorders = nullptr;
mHorBorders = nullptr;
mChildFrameborder = nullptr;
mChildBorderColors = nullptr;
mForceFrameResizability = false;
}
nsHTMLFramesetFrame::~nsHTMLFramesetFrame()
{
delete[] mRowSizes;
delete[] mColSizes;
delete[] mVerBorders;
delete[] mHorBorders;
delete[] mChildFrameborder;
delete[] mChildBorderColors;
Preferences::UnregisterCallback(FrameResizePrefCallback,
kFrameResizePref, this);
}
NS_QUERYFRAME_HEAD(nsHTMLFramesetFrame)
NS_QUERYFRAME_ENTRY(nsHTMLFramesetFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
// static
int
nsHTMLFramesetFrame::FrameResizePrefCallback(const char* aPref, void* aClosure)
{
nsHTMLFramesetFrame *frame =
reinterpret_cast<nsHTMLFramesetFrame *>(aClosure);
nsIDocument* doc = frame->mContent->GetDocument();
mozAutoDocUpdate updateBatch(doc, UPDATE_CONTENT_MODEL, true);
if (doc) {
nsNodeUtils::AttributeWillChange(frame->GetContent()->AsElement(),
kNameSpaceID_None,
nsGkAtoms::frameborder,
nsIDOMMutationEvent::MODIFICATION);
}
frame->mForceFrameResizability =
Preferences::GetBool(kFrameResizePref, frame->mForceFrameResizability);
frame->RecalculateBorderResize();
if (doc) {
nsNodeUtils::AttributeChanged(frame->GetContent()->AsElement(),
kNameSpaceID_None,
nsGkAtoms::frameborder,
nsIDOMMutationEvent::MODIFICATION);
}
return 0;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
// find the highest ancestor that is a frameset
nsresult rv = NS_OK;
nsIFrame* parentFrame = GetParent();
mTopLevelFrameset = this;
while (parentFrame) {
nsHTMLFramesetFrame* frameset = do_QueryFrame(parentFrame);
if (frameset) {
mTopLevelFrameset = frameset;
parentFrame = parentFrame->GetParent();
} else {
break;
}
}
nsPresContext* presContext = PresContext();
nsIPresShell* shell = presContext->PresShell();
nsFrameborder frameborder = GetFrameBorder();
int32_t borderWidth = GetBorderWidth(presContext, false);
nscolor borderColor = GetBorderColor();
// Get the rows= cols= data
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromContent(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
const nsFramesetSpec* colSpecs = nullptr;
nsresult result = ourContent->GetRowSpec(&mNumRows, &rowSpecs);
NS_ENSURE_SUCCESS(result, result);
result = ourContent->GetColSpec(&mNumCols, &colSpecs);
NS_ENSURE_SUCCESS(result, result);
// Maximum value of mNumRows and mNumCols is NS_MAX_FRAMESET_SPEC_COUNT
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscoord));
mRowSizes = new nscoord[mNumRows];
mColSizes = new nscoord[mNumCols];
if (!mRowSizes || !mColSizes)
return NS_ERROR_OUT_OF_MEMORY;
// Ensure we can't overflow numCells
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT);
int32_t numCells = mNumRows*mNumCols;
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsHTMLFramesetBorderFrame*));
mVerBorders = new nsHTMLFramesetBorderFrame*[mNumCols]; // 1 more than number of ver borders
if (!mVerBorders)
return NS_ERROR_OUT_OF_MEMORY;
for (int verX = 0; verX < mNumCols; verX++)
mVerBorders[verX] = nullptr;
mHorBorders = new nsHTMLFramesetBorderFrame*[mNumRows]; // 1 more than number of hor borders
if (!mHorBorders)
return NS_ERROR_OUT_OF_MEMORY;
for (int horX = 0; horX < mNumRows; horX++)
mHorBorders[horX] = nullptr;
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(int32_t) / NS_MAX_FRAMESET_SPEC_COUNT);
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(nsFrameborder) / NS_MAX_FRAMESET_SPEC_COUNT);
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(nsBorderColor) / NS_MAX_FRAMESET_SPEC_COUNT);
mChildFrameborder = new nsFrameborder[numCells];
mChildBorderColors = new nsBorderColor[numCells];
if (!mChildFrameborder || !mChildBorderColors)
return NS_ERROR_OUT_OF_MEMORY;
// create the children frames; skip content which isn't <frameset> or <frame>
mChildCount = 0; // number of <frame> or <frameset> children
nsIFrame* frame;
// number of any type of children
uint32_t numChildren = mContent->GetChildCount();
for (uint32_t childX = 0; childX < numChildren; childX++) {
if (mChildCount == numCells) { // we have more <frame> or <frameset> than cells
// Clear the lazy bits in the remaining children. Also clear
// the restyle flags, like nsCSSFrameConstructor::ProcessChildren does.
for (uint32_t i = childX; i < numChildren; i++) {
nsIContent *child = mContent->GetChildAt(i);
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
if (child->IsElement()) {
child->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
}
}
break;
}
nsIContent *child = mContent->GetChildAt(childX);
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
// Also clear the restyle flags in the child like
// nsCSSFrameConstructor::ProcessChildren does.
if (child->IsElement()) {
child->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
}
// IMPORTANT: This must match the conditions in
// nsCSSFrameConstructor::ContentAppended/Inserted/Removed
if (!child->IsHTML())
continue;
nsIAtom *tag = child->Tag();
if (tag == nsGkAtoms::frameset || tag == nsGkAtoms::frame) {
nsRefPtr<nsStyleContext> kidSC;
nsresult result;
kidSC = shell->StyleSet()->ResolveStyleFor(child->AsElement(),
mStyleContext);
if (tag == nsGkAtoms::frameset) {
frame = NS_NewHTMLFramesetFrame(shell, kidSC);
if (MOZ_UNLIKELY(!frame))
return NS_ERROR_OUT_OF_MEMORY;
nsHTMLFramesetFrame* childFrame = (nsHTMLFramesetFrame*)frame;
childFrame->SetParentFrameborder(frameborder);
childFrame->SetParentBorderWidth(borderWidth);
childFrame->SetParentBorderColor(borderColor);
result = frame->Init(child, this, nullptr);
if (NS_FAILED(result)) {
frame->Destroy();
return result;
}
mChildBorderColors[mChildCount].Set(childFrame->GetBorderColor());
} else { // frame
frame = NS_NewSubDocumentFrame(shell, kidSC);
if (MOZ_UNLIKELY(!frame))
return NS_ERROR_OUT_OF_MEMORY;
result = frame->Init(child, this, nullptr);
if (NS_FAILED(result)) {
frame->Destroy();
return result;
}
mChildFrameborder[mChildCount] = GetFrameBorder(child);
mChildBorderColors[mChildCount].Set(GetBorderColor(child));
}
child->SetPrimaryFrame(frame);
if (NS_FAILED(result))
return result;
mFrames.AppendFrame(nullptr, frame);
mChildCount++;
}
}
mNonBlankChildCount = mChildCount;
// add blank frames for frameset cells that had no content provided
for (int blankX = mChildCount; blankX < numCells; blankX++) {
nsRefPtr<nsStyleContext> pseudoStyleContext;
pseudoStyleContext = shell->StyleSet()->
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::framesetBlank, mStyleContext);
if (!pseudoStyleContext) {
return NS_ERROR_OUT_OF_MEMORY;
}
// XXX the blank frame is using the content of its parent - at some point it
// should just have null content, if we support that
nsHTMLFramesetBlankFrame* blankFrame = new (shell) nsHTMLFramesetBlankFrame(pseudoStyleContext);
result = blankFrame->Init(mContent, this, nullptr);
if (NS_FAILED(result)) {
blankFrame->Destroy();
return result;
}
mFrames.AppendFrame(nullptr, blankFrame);
mChildBorderColors[mChildCount].Set(NO_COLOR);
mChildCount++;
}
mNonBorderChildCount = mChildCount;
return rv;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList)
{
// We do this weirdness where we create our child frames in Init(). On the
// other hand, we're going to get a SetInitialChildList() with an empty list
// and null list name after the frame constructor is done creating us. So
// just ignore that call.
if (aListID == kPrincipalList && aChildList.IsEmpty()) {
return NS_OK;
}
return nsContainerFrame::SetInitialChildList(aListID, aChildList);
}
// XXX should this try to allocate twips based on an even pixel boundary?
void nsHTMLFramesetFrame::Scale(nscoord aDesired,
int32_t aNumIndicies,
int32_t* aIndicies,
int32_t aNumItems,
int32_t* aItems)
{
int32_t actual = 0;
int32_t i, j;
// get the actual total
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
actual += aItems[j];
}
if (actual > 0) {
float factor = (float)aDesired / (float)actual;
actual = 0;
// scale the items up or down
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
aItems[j] = NSToCoordRound((float)aItems[j] * factor);
actual += aItems[j];
}
} else if (aNumIndicies != 0) {
// All the specs say zero width, but we have to fill up space
// somehow. Distribute it equally.
nscoord width = NSToCoordRound((float)aDesired / (float)aNumIndicies);
actual = width * aNumIndicies;
for (i = 0; i < aNumIndicies; i++) {
aItems[aIndicies[i]] = width;
}
}
if (aNumIndicies > 0 && aDesired != actual) {
int32_t unit = (aDesired > actual) ? 1 : -1;
for (i=0; (i < aNumIndicies) && (aDesired != actual); i++) {
j = aIndicies[i];
if (j < aNumItems) {
aItems[j] += unit;
actual += unit;
}
}
}
}
/**
* Translate the rows/cols specs into an array of integer sizes for
* each cell in the frameset. Sizes are allocated based on the priorities of the
* specifier - fixed sizes have the highest priority, percentage sizes have the next
* highest priority and relative sizes have the lowest.
*/
void nsHTMLFramesetFrame::CalculateRowCol(nsPresContext* aPresContext,
nscoord aSize,
int32_t aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues)
{
// aNumSpecs maximum value is NS_MAX_FRAMESET_SPEC_COUNT
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(int32_t));
int32_t fixedTotal = 0;
int32_t numFixed = 0;
nsAutoArrayPtr<int32_t> fixed(new int32_t[aNumSpecs]);
int32_t numPercent = 0;
nsAutoArrayPtr<int32_t> percent(new int32_t[aNumSpecs]);
int32_t relativeSums = 0;
int32_t numRelative = 0;
nsAutoArrayPtr<int32_t> relative(new int32_t[aNumSpecs]);
if (MOZ_UNLIKELY(!fixed || !percent || !relative)) {
return; // NS_ERROR_OUT_OF_MEMORY
}
int32_t i, j;
// initialize the fixed, percent, relative indices, allocate the fixed sizes and zero the others
for (i = 0; i < aNumSpecs; i++) {
aValues[i] = 0;
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aValues[i] = nsPresContext::CSSPixelsToAppUnits(aSpecs[i].mValue);
fixedTotal += aValues[i];
fixed[numFixed] = i;
numFixed++;
break;
case eFramesetUnit_Percent:
percent[numPercent] = i;
numPercent++;
break;
case eFramesetUnit_Relative:
relative[numRelative] = i;
numRelative++;
relativeSums += aSpecs[i].mValue;
break;
}
}
// scale the fixed sizes if they total too much (or too little and there aren't any percent or relative)
if ((fixedTotal > aSize) || ((fixedTotal < aSize) && (0 == numPercent) && (0 == numRelative))) {
Scale(aSize, numFixed, fixed, aNumSpecs, aValues);
return;
}
int32_t percentMax = aSize - fixedTotal;
int32_t percentTotal = 0;
// allocate the percentage sizes from what is left over from the fixed allocation
for (i = 0; i < numPercent; i++) {
j = percent[i];
aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)aSize / 100.0f);
percentTotal += aValues[j];
}
// scale the percent sizes if they total too much (or too little and there aren't any relative)
if ((percentTotal > percentMax) || ((percentTotal < percentMax) && (0 == numRelative))) {
Scale(percentMax, numPercent, percent, aNumSpecs, aValues);
return;
}
int32_t relativeMax = percentMax - percentTotal;
int32_t relativeTotal = 0;
// allocate the relative sizes from what is left over from the percent allocation
for (i = 0; i < numRelative; i++) {
j = relative[i];
aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)relativeMax / (float)relativeSums);
relativeTotal += aValues[j];
}
// scale the relative sizes if they take up too much or too little
if (relativeTotal != relativeMax) {
Scale(relativeMax, numRelative, relative, aNumSpecs, aValues);
}
}
/**
* Translate the rows/cols integer sizes into an array of specs for
* each cell in the frameset. Reverse of CalculateRowCol() behaviour.
* This allows us to maintain the user size info through reflows.
*/
void nsHTMLFramesetFrame::GenerateRowCol(nsPresContext* aPresContext,
nscoord aSize,
int32_t aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues,
nsString& aNewAttr)
{
int32_t i;
for (i = 0; i < aNumSpecs; i++) {
if (!aNewAttr.IsEmpty())
aNewAttr.Append(PRUnichar(','));
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aNewAttr.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(aValues[i]));
break;
case eFramesetUnit_Percent: // XXX Only accurate to 1%, need 1 pixel
case eFramesetUnit_Relative:
// Add 0.5 to the percentage to make rounding work right.
aNewAttr.AppendInt(uint32_t((100.0*aValues[i])/aSize + 0.5));
aNewAttr.Append(PRUnichar('%'));
break;
}
}
}
int32_t nsHTMLFramesetFrame::GetBorderWidth(nsPresContext* aPresContext,
bool aTakeForcingIntoAccount)
{
bool forcing = mForceFrameResizability && aTakeForcingIntoAccount;
if (!forcing) {
nsFrameborder frameborder = GetFrameBorder();
if (frameborder == eFrameborder_No) {
return 0;
}
}
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::border);
if (attr) {
int32_t intVal = 0;
if (attr->Type() == nsAttrValue::eInteger) {
intVal = attr->GetIntegerValue();
if (intVal < 0) {
intVal = 0;
}
}
if (forcing && intVal == 0) {
intVal = DEFAULT_BORDER_WIDTH_PX;
}
return nsPresContext::CSSPixelsToAppUnits(intVal);
}
}
if (mParentBorderWidth > 0 ||
(mParentBorderWidth == 0 && !forcing)) {
return mParentBorderWidth;
}
return nsPresContext::CSSPixelsToAppUnits(DEFAULT_BORDER_WIDTH_PX);
}
int
nsHTMLFramesetFrame::GetSkipSides() const
{
return 0;
}
void
nsHTMLFramesetFrame::GetDesiredSize(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize)
{
nsHTMLFramesetFrame* framesetParent = do_QueryFrame(GetParent());
if (nullptr == framesetParent) {
if (aPresContext->IsPaginated()) {
// XXX This needs to be changed when framesets paginate properly
aDesiredSize.width = aReflowState.availableWidth;
aDesiredSize.height = aReflowState.availableHeight;
} else {
nsRect area = aPresContext->GetVisibleArea();
aDesiredSize.width = area.width;
aDesiredSize.height= area.height;
}
} else {
nsSize size;
framesetParent->GetSizeOfChild(this, size);
aDesiredSize.width = size.width;
aDesiredSize.height = size.height;
}
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChildAt(int32_t aIndexInParent,
nsSize& aSize,
nsIntPoint& aCellIndex)
{
int32_t row = aIndexInParent / mNumCols;
int32_t col = aIndexInParent - (row * mNumCols); // remainder from dividing index by mNumCols
if ((row < mNumRows) && (col < mNumCols)) {
aSize.width = mColSizes[col];
aSize.height = mRowSizes[row];
aCellIndex.x = col;
aCellIndex.y = row;
} else {
aSize.width = aSize.height = 0;
aCellIndex.x = aCellIndex.y = 0;
}
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChild(nsIFrame* aChild,
nsSize& aSize)
{
// Reflow only creates children frames for <frameset> and <frame> content.
// this assumption is used here
int i = 0;
for (nsIFrame* child = mFrames.FirstChild(); child;
child = child->GetNextSibling()) {
if (aChild == child) {
nsIntPoint ignore;
GetSizeOfChildAt(i, aSize, ignore);
return;
}
i++;
}
aSize.width = 0;
aSize.height = 0;
}
NS_METHOD nsHTMLFramesetFrame::HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (mDragger) {
// the nsFramesetBorderFrame has captured NS_MOUSE_DOWN
switch (aEvent->message) {
case NS_MOUSE_MOVE:
MouseDrag(aPresContext, aEvent);
break;
case NS_MOUSE_BUTTON_UP:
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
static_cast<nsMouseEvent*>(aEvent)->button ==
nsMouseEvent::eLeftButton) {
EndMouseDrag(aPresContext);
}
break;
}
*aEventStatus = nsEventStatus_eConsumeNoDefault;
} else {
*aEventStatus = nsEventStatus_eIgnore;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor)
{
if (mDragger) {
aCursor.mCursor = (mDragger->mVertical) ? NS_STYLE_CURSOR_EW_RESIZE : NS_STYLE_CURSOR_NS_RESIZE;
} else {
aCursor.mCursor = NS_STYLE_CURSOR_DEFAULT;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
nsresult rv = BuildDisplayListForInline(aBuilder, aDirtyRect, aLists);
NS_ENSURE_SUCCESS(rv, rv);
if (mDragger && aBuilder->IsForEventDelivery()) {
rv = aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplayEventReceiver(aBuilder, this));
}
return rv;
}
void
nsHTMLFramesetFrame::ReflowPlaceChild(nsIFrame* aChild,
nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsPoint& aOffset,
nsSize& aSize,
nsIntPoint* aCellIndex)
{
// reflow the child
nsHTMLReflowState reflowState(aPresContext, aReflowState, aChild, aSize);
nsHTMLReflowMetrics metrics;
metrics.width = aSize.width;
metrics.height= aSize.height;
nsReflowStatus status;
ReflowChild(aChild, aPresContext, metrics, reflowState, aOffset.x,
aOffset.y, 0, status);
NS_ASSERTION(NS_FRAME_IS_COMPLETE(status), "bad status");
// Place and size the child
metrics.width = aSize.width;
metrics.height = aSize.height;
FinishReflowChild(aChild, aPresContext, nullptr, metrics, aOffset.x, aOffset.y, 0);
}
static
nsFrameborder GetFrameBorderHelper(nsGenericHTMLElement* aContent)
{
if (nullptr != aContent) {
const nsAttrValue* attr = aContent->GetParsedAttr(nsGkAtoms::frameborder);
if (attr && attr->Type() == nsAttrValue::eEnum) {
switch (attr->GetEnumValue())
{
case NS_STYLE_FRAME_YES:
case NS_STYLE_FRAME_1:
return eFrameborder_Yes;
break;
case NS_STYLE_FRAME_NO:
case NS_STYLE_FRAME_0:
return eFrameborder_No;
break;
}
}
}
return eFrameborder_Notset;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder()
{
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return mParentFrameborder;
}
return result;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder(nsIContent* aContent)
{
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(aContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return GetFrameBorder();
}
return result;
}
nscolor nsHTMLFramesetFrame::GetBorderColor()
{
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return mParentBorderColor;
}
nscolor nsHTMLFramesetFrame::GetBorderColor(nsIContent* aContent)
{
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(aContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return GetBorderColor();
}
NS_IMETHODIMP
nsHTMLFramesetFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
nsIPresShell *shell = aPresContext->PresShell();
nsStyleSet *styleSet = shell->StyleSet();
mParent->AddStateBits(NS_FRAME_CONTAINS_RELATIVE_HEIGHT);
//printf("FramesetFrame2::Reflow %X (%d,%d) \n", this, aReflowState.availableWidth, aReflowState.availableHeight);
// Always get the size so that the caller knows how big we are
GetDesiredSize(aPresContext, aReflowState, aDesiredSize);
nscoord width = (aDesiredSize.width <= aReflowState.availableWidth)
? aDesiredSize.width : aReflowState.availableWidth;
nscoord height = (aDesiredSize.height <= aReflowState.availableHeight)
? aDesiredSize.height : aReflowState.availableHeight;
bool firstTime = (GetStateBits() & NS_FRAME_FIRST_REFLOW) != 0;
if (firstTime) {
Preferences::RegisterCallback(FrameResizePrefCallback,
kFrameResizePref, this);
mForceFrameResizability = Preferences::GetBool(kFrameResizePref);
}
// subtract out the width of all of the potential borders. There are
// only borders between <frame>s. There are none on the edges (e.g the
// leftmost <frame> has no left border).
int32_t borderWidth = GetBorderWidth(aPresContext, true);
width -= (mNumCols - 1) * borderWidth;
if (width < 0) width = 0;
height -= (mNumRows - 1) * borderWidth;
if (height < 0) height = 0;
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromContent(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
const nsFramesetSpec* colSpecs = nullptr;
int32_t rows = 0;
int32_t cols = 0;
ourContent->GetRowSpec(&rows, &rowSpecs);
ourContent->GetColSpec(&cols, &colSpecs);
// If the number of cols or rows has changed, the frame for the frameset
// will be re-created.
if (mNumRows != rows || mNumCols != cols) {
aStatus = NS_FRAME_COMPLETE;
mDrag.UnSet();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return NS_OK;
}
CalculateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes);
CalculateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes);
nsAutoArrayPtr<bool> verBordersVis; // vertical borders visibility
nsAutoArrayPtr<nscolor> verBorderColors;
nsAutoArrayPtr<bool> horBordersVis; // horizontal borders visibility
nsAutoArrayPtr<nscolor> horBorderColors;
nscolor borderColor = GetBorderColor();
nsFrameborder frameborder = GetFrameBorder();
if (firstTime) {
// Check for overflow in memory allocations using mNumCols and mNumRows
// which have a maxium value of NS_MAX_FRAMESET_SPEC_COUNT.
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(bool));
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscolor));
verBordersVis = new bool[mNumCols];
NS_ENSURE_TRUE(verBordersVis, NS_ERROR_OUT_OF_MEMORY);
verBorderColors = new nscolor[mNumCols];
NS_ENSURE_TRUE(verBorderColors, NS_ERROR_OUT_OF_MEMORY);
for (int verX = 0; verX < mNumCols; verX++) {
verBordersVis[verX] = false;
verBorderColors[verX] = NO_COLOR;
}
horBordersVis = new bool[mNumRows];
NS_ENSURE_TRUE(horBordersVis, NS_ERROR_OUT_OF_MEMORY);
horBorderColors = new nscolor[mNumRows];
NS_ENSURE_TRUE(horBorderColors, NS_ERROR_OUT_OF_MEMORY);
for (int horX = 0; horX < mNumRows; horX++) {
horBordersVis[horX] = false;
horBorderColors[horX] = NO_COLOR;
}
}
// reflow the children
int32_t lastRow = 0;
int32_t lastCol = 0;
int32_t borderChildX = mNonBorderChildCount; // index of border children
nsHTMLFramesetBorderFrame* borderFrame = nullptr;
nsPoint offset(0,0);
nsSize size, lastSize;
nsIFrame* child = mFrames.FirstChild();
for (int32_t childX = 0; childX < mNonBorderChildCount; childX++) {
nsIntPoint cellIndex;
GetSizeOfChildAt(childX, size, cellIndex);
if (lastRow != cellIndex.y) { // changed to next row
offset.x = 0;
offset.y += lastSize.height;