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gecko-dev/layout/html/tests/TestInlineFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <stdio.h>
#include "nscore.h"
#include "nsCRT.h"
#include "nsHTMLParts.h"
#include "nsIDocument.h"
#include "nsDocument.h"
#include "nsHTMLTagContent.h"
#include "nsCoord.h"
#include "nsSplittableFrame.h"
#include "nsIContentDelegate.h"
#include "nsPresContext.h"
#include "nsInlineFrame.h"
#include "nsIAtom.h"
#include "nsAutoPtr.h"
#include "nsStyleSet.h"
///////////////////////////////////////////////////////////////////////////////
//
class MyDocument : public nsDocument {
public:
MyDocument();
NS_IMETHOD StartDocumentLoad(const char* aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener **aDocListener)
{
return NS_OK;
}
protected:
virtual ~MyDocument();
};
MyDocument::MyDocument()
{
}
MyDocument::~MyDocument()
{
}
///////////////////////////////////////////////////////////////////////////////
//
// Frame with a fixed width, but that's optionally splittable
class FixedSizeFrame : public nsSplittableFrame {
public:
FixedSizeFrame(nsIContent* aContent,
nsIFrame* aParentFrame);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsReflowMetrics& aDesiredSize,
const nsReflowState& aReflowState,
nsReflowStatus& aStatus);
PRBool IsSplittable() const;
};
class FixedSizeContent : public nsHTMLTagContent {
public:
FixedSizeContent(nscoord aWidth,
nscoord aHeight,
PRBool aIsSplittable = PR_FALSE);
// Accessors
nscoord GetWidth() {return mWidth;}
void SetWidth(nscoord aWidth);
nscoord GetHeight() {return mHeight;}
void SetHeight(nscoord aHeight);
void ToHTML(nsString& out);
PRBool IsSplittable() const {return mIsSplittable;}
void SetIsSplittable(PRBool aIsSplittable) {mIsSplittable = aIsSplittable;}
private:
nscoord mWidth, mHeight;
PRBool mIsSplittable;
};
///////////////////////////////////////////////////////////////////////////////
//
FixedSizeFrame::FixedSizeFrame(nsIContent* aContent,
nsIFrame* aParentFrame)
: nsSplittableFrame(aContent, aParentFrame)
{
}
NS_METHOD FixedSizeFrame::Reflow(nsPresContext* aPresContext,
nsReflowMetrics& aDesiredSize,
const nsReflowState& aReflowState,
nsReflowStatus& aStatus)
{
NS_PRECONDITION((aReflowState.availableWidth > 0) && (aReflowState.availableHeight > 0),
"bad max size");
FixedSizeContent* content = (FixedSizeContent*)mContent;
nsReflowStatus status = NS_FRAME_COMPLETE;
FixedSizeFrame* prevInFlow = (FixedSizeFrame*)mPrevInFlow;
aDesiredSize.width = content->GetWidth();
aDesiredSize.height = content->GetHeight();
// We can split once horizontally
if (nsnull != prevInFlow) {
aDesiredSize.width -= prevInFlow->mRect.width;
} else if ((aDesiredSize.width > aReflowState.maxSize.width) && content->IsSplittable()) {
aDesiredSize.width = aReflowState.maxSize.width;
status = NS_FRAME_NOT_COMPLETE;
}
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = aDesiredSize.width;
aDesiredSize.maxElementSize->height = aDesiredSize.height;
}
return status;
}
PRBool FixedSizeFrame::IsSplittable() const
{
FixedSizeContent* content = (FixedSizeContent*)mContent;
return content->IsSplittable();
}
///////////////////////////////////////////////////////////////////////////////
//
FixedSizeContent::FixedSizeContent(nscoord aWidth,
nscoord aHeight,
PRBool aIsSplittable)
: nsHTMLTagContent()
{
mWidth = aWidth;
mHeight = aHeight;
mIsSplittable = aIsSplittable;
}
// Change the width of the content triggering an incremental reflow
void FixedSizeContent::SetWidth(nscoord aWidth)
{
NS_NOTYETIMPLEMENTED("set width");
}
// Change the width of the content triggering an incremental reflow
void FixedSizeContent::SetHeight(nscoord aHeight)
{
NS_NOTYETIMPLEMENTED("set height");
}
void FixedSizeContent::ToHTML(nsString& out)
{
}
///////////////////////////////////////////////////////////////////////////////
//
class InlineFrame : public nsInlineFrame
{
public:
InlineFrame(nsIContent* aContent,
nsIFrame* aParent);
// Accessors to return protected state
nsIFrame* OverflowList() {return mOverflowList;}
void ClearOverflowList() {mOverflowList = nsnull;}
PRBool LastContentIsComplete() {return mLastContentIsComplete;}
// Helper member functions
PRInt32 MaxChildWidth();
PRInt32 MaxChildHeight();
};
InlineFrame::InlineFrame(nsIContent* aContent,
nsIFrame* aParent)
: nsInlineFrame(aContent, aParent)
{
}
#if 0
PRInt32 InlineFrame::MaxChildWidth()
{
PRInt32 maxWidth = 0;
nsIFrame* f;
for (f = GetFirstChild(); nsnull != f; f->GetNextSibling(f)) {
if (f->GetWidth() > maxWidth) {
maxWidth = f->GetWidth();
}
}
return maxWidth;
}
PRInt32 InlineFrame::MaxChildHeight()
{
PRInt32 maxHeight = 0;
for (nsIFrame* f = GetFirstChild(); nsnull != f; f = f->GetNextSibling()) {
if (f->GetHeight() > maxHeight) {
maxHeight = f->GetHeight();
}
}
return maxHeight;
}
///////////////////////////////////////////////////////////////////////////////
// Helper functions
// Compute the number of frames in the list
static PRInt32
LengthOf(nsIFrame* aChildList)
{
PRInt32 result = 0;
while (nsnull != aChildList) {
aChildList = aChildList->GetNextSibling();
result++;
}
return result;
}
///////////////////////////////////////////////////////////////////////////////
//
// Test basic reflowing of unmapped children. No borders/padding or child
// margins involved, and no splitting of child frames. b is an empty
// HTML container
//
// Here's what this function tests:
// - reflow unmapped maps all children and returns that it's complete
// - each child frame is placed and sized properly
// - the inline frame's desired width and height are correct
static PRBool
TestReflowUnmapped(nsPresContext* presContext)
{
// Create an HTML container
nsIContent* b;
NS_NewHTMLContainer(&b, NS_NewAtom("span"));
// Append three fixed width elements.
b->AppendChildTo(new FixedSizeContent(100, 100));
b->AppendChildTo(new FixedSizeContent(300, 300));
b->AppendChildTo(new FixedSizeContent(200, 200));
// Create an inline frame for the HTML container and set its
// style context
InlineFrame* f = new InlineFrame(b, 0, nsnull);
nsRefPtr<nsStyleContext> styleContext;
styleContext = presContext->StyleSet()->ResolveStyleFor(b, nsnull);
f->SetStyleContext(styleContext);
// Reflow the HTML container
nsReflowMetrics reflowMetrics;
nsSize maxSize(1000, 1000);
nsReflowStatus status;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Make sure the frame is complete
if (NS_FRAME_IS_NOT_COMPLETE(status)) {
printf("ReflowUnmapped: initial reflow not complete: %d\n", status);
return PR_FALSE;
}
// Verify that all the children were mapped
if (f->ChildCount() != b->ChildCount()) {
printf("ReflowUnmapped: wrong number of child frames: %d\n", f->ChildCount());
return PR_FALSE;
}
// and that the last content offset is correct
if (f->GetLastContentOffset() != (b->ChildCount() - 1)) {
printf("ReflowUnmapped: wrong last content offset: %d\n", f->GetLastContentOffset());
return PR_FALSE;
}
// Verify that the width/height of each child frame is correct
for (PRInt32 i = 0; i < b->ChildCount(); i++) {
FixedSizeContent* childContent = (FixedSizeContent*)b->ChildAt(i);
nsIFrame* childFrame = f->ChildAt(i);
if ((childFrame->GetWidth() != childContent->GetWidth()) ||
(childFrame->GetHeight() != childContent->GetHeight())) {
printf("ReflowUnmapped: child frame size incorrect: %d\n", i);
return PR_FALSE;
}
}
// Verify that the inline frame's desired height is correct
if (reflowMetrics.height != f->MaxChildHeight()) {
printf("ReflowUnmapped: wrong frame height: %d\n", reflowMetrics.height);
return PR_FALSE;
}
// Verify that the frames are tiled horizontally with no space between frames
nscoord x = 0;
for (nsIFrame* child = f->FirstChild(); child; child = child->GetNextSibling()) {
nsPoint origin;
child->GetOrigin(origin);
if (origin.x != x) {
printf("ReflowUnmapped: child x-origin is incorrect: %d\n", x);
return PR_FALSE;
}
x += child->GetWidth();
}
// and that the inline frame's desired width is correct
if (reflowMetrics.width != x) {
printf("ReflowUnmapped: wrong frame width: %d\n", reflowMetrics.width);
return PR_FALSE;
}
NS_RELEASE(b);
return PR_TRUE;
}
// Test the case where the frame max size is too small for even one child frame.
//
// Here's what this function tests:
// 1. reflow unmapped with a max width narrower than the first child
// a) when there's only one content child
// b) when there's more than one content child
// 2. reflow unmapped when the height's too small
// 3. reflow mapped when the height's too small
// 4. reflow mapped with a max width narrower than the first child
static PRBool
TestChildrenThatDontFit(nsPresContext* presContext)
{
// Create an HTML container
nsIContent* b;
NS_NewHTMLContainer(&b, NS_NewAtom("span"));
// Add one fixed width element.
b->AppendChildTo(new FixedSizeContent(100, 100));
// Create an inline frame for the HTML container and set its
// style context
InlineFrame* f = new InlineFrame(b, 0, nsnull);
nsRefPtr<nsStyleContext> styleContext;
styleContext = presContext->StyleSet()->ResolveStyleFor(b, nsnull);
f->SetStyleContext(styleContext);
///////////////////////////////////////////////////////////////////////////
// Test #1a
// Reflow the frame with a width narrower than the first child frame. This
// tests how we handle one child that doesn't fit when reflowing unmapped
nsReflowMetrics reflowMetrics;
nsSize maxSize(10, 1000);
nsReflowStatus status;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify that the inline frame is complete
if (NS_FRAME_IS_NOT_COMPLETE(status)) {
printf("ChildrenThatDontFIt: reflow unmapped isn't complete (#1a): %d\n", status);
return PR_FALSE;
}
// Verify that the desired width is the width of the first frame
if (reflowMetrics.width != f->FirstChild()->GetWidth()) {
printf("ChildrenThatDontFit: frame width is wrong (#1a): %d\n", f->FirstChild()->GetWidth());
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #1b
// Append two more fixed width elements.
b->AppendChildTo(new FixedSizeContent(300, 300));
b->AppendChildTo(new FixedSizeContent(200, 200));
// Create a new inline frame for the HTML container
InlineFrame* f1 = new InlineFrame(b, 0, nsnull);
f1->SetStyleContext(styleContext);
// Reflow the frame with a width narrower than the first child frame. This
// tests how we handle children that don't fit when reflowing unmapped
maxSize.SizeTo(10, 1000);
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify that the frame is not complete
if (NS_FRAME_IS_NOT_COMPLETE(status)) {
printf("ChildrenThatDontFIt: reflow unmapped isn't not complete (#1b): %d\n", status);
return PR_FALSE;
}
// Verify that the desired width is the width of the first frame
if (reflowMetrics.width != f1->FirstChild()->GetWidth()) {
printf("ChildrenThatDontFit: frame width is wrong (#1b): %d\n", f1->FirstChild()->GetWidth());
return PR_FALSE;
}
// Verify that the child count is only 1
if (f1->ChildCount() != 1) {
printf("ChildrenThatDontFit: more than one child frame (#1b): %d\n", f1->ChildCount());
return PR_FALSE;
}
// and that there's no overflow list. If there's an overflow list that means
// we reflowed a second frame and we would have passed it a negative max size
// which is not a very nice thing to do
if (nsnull != f1->OverflowList()) {
printf("ChildrenThatDontFit: unexpected overflow list (#1b)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #2
// Now reflow the frame wide enough so that all the frames fit. Make
// the height small enough so that no frames fit, so we can test that
// reflow unmapped handles that check correctly
maxSize.width = 1000;
maxSize.height = 10;
reflowMetrics.height = 0;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify the frame is complete
if (NS_FRAME_IS_NOT_COMPLETE(status)) {
printf("ChildrenThatDontFit: resize isn't complete (#2): %d\n", status);
return PR_FALSE;
}
// Verify that all child frames are now there
if (f1->ChildCount() != b->ChildCount()) {
printf("ChildrenThatDontFit: wrong child count (#2): %d\n", f1->ChildCount());
return PR_FALSE;
}
// and that the frame's height is the right size
if (reflowMetrics.height != f1->MaxChildHeight()) {
printf("ChildrenThatDontFit: height is wrong (#2): %d\n", reflowMetrics.height);
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #3
// Now test reflow mapped against a height that's too small
nscoord oldHeight = reflowMetrics.height;
maxSize.height = 10;
reflowMetrics.height = 0;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify the frame is complete and we still have all the child frames
if (NS_FRAME_IS_NOT_COMPLETE(status) || (f1->ChildCount() != b->ChildCount())) {
printf("ChildrenThatDontFit: reflow mapped failed (#3)\n");
return PR_FALSE;
}
// Verify that the desired height of the frame is the same as before
if (reflowMetrics.height != oldHeight) {
printf("ChildrenThatDontFit: height is wrong (#3): %d\n", reflowMetrics.height);
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #4
// And finally test reflowing mapped with a max width narrower than the first
// child
maxSize.width = 10;
maxSize.height = 1000;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify the frame is not complete
if (NS_FRAME_IS_NOT_COMPLETE(status)) {
printf("ChildrenThatDontFIt: reflow mapped isn't not complete (#4): %d\n", status);
return PR_FALSE;
}
// Verify that there's only one child
if (f1->ChildCount() > 1) {
printf("ChildrenThatDontFIt: reflow mapped too many children (#4): %d\n", f1->ChildCount());
return PR_FALSE;
}
// and that the desired width is the width of the first frame
if (reflowMetrics.width != f1->FirstChild()->GetWidth()) {
printf("ChildrenThatDontFit: frame width is wrong (#4): %d\n", f1->FirstChild()->GetWidth());
return PR_FALSE;
}
NS_RELEASE(b);
return PR_TRUE;
}
// Test handling of the overflow list
//
// Here's what this function tests:
// 1. reflow unmapped places children whose width doesn't completely fit on
// the overflow list
// 2. frames use their own overflow list when reflowing mapped children
// 3. continuing frames should use the overflow list from their prev-in-flow
static PRBool
TestOverflow(nsPresContext* presContext)
{
// Create an HTML container
nsIContent* b;
NS_NewHTMLContainer(&b, NS_NewAtom("span"));
// Append three fixed width elements.
b->AppendChildTo(new FixedSizeContent(100, 100));
b->AppendChildTo(new FixedSizeContent(300, 300));
b->AppendChildTo(new FixedSizeContent(200, 200));
// Create an inline frame for the HTML container and set its
// style context
InlineFrame* f = new InlineFrame(b, 0, nsnull);
nsRefPtr<nsStyleContext> styleContext;
styleContext = presContext->StyleSet()->ResolveStyleFor(b, nsnull);
f->SetStyleContext(styleContext);
///////////////////////////////////////////////////////////////////////////
// Test #1
// Reflow the frame so only half the second frame fits
nsReflowMetrics reflowMetrics;
nsSize maxSize(150, 1000);
nsReflowStatus status;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// Verify that there's one frame on the overflow list
if ((nsnull == f->OverflowList()) || (LengthOf(f->OverflowList()) != 1)) {
printf("Overflow: no overflow list (#1)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #2
// Reflow the frame again this time so all the child frames fit. The inline
// frame should use its own overflow list
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "isn't complete");
// Verify the overflow list is now empty
if (nsnull != f->OverflowList()) {
printf("Overflow: overflow list should be empty (#2)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #3
// Reflow the frame so that only the first frame fits. The rest of the
// children should go on the overflow list. This isn't interesting by
// itself, but it enables the next test
maxSize.width = f->FirstChild()->GetWidth();
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION((f->ChildCount() == 1) && (LengthOf(f->OverflowList()) == 2), "bad overflow list");
// Create a continuing frame
InlineFrame* f1 = new InlineFrame(b, 0, nsnull);
f1->SetStyleContext(f->GetStyleContext(presContext));
f->SetNextSibling(f1);
f->SetNextInFlow(f1);
f1->SetPrevInFlow(f);
// Reflow the continuing frame. It should get its children from the overflow list
maxSize.width = 1000;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(NS_FRAME_IS_COMPLETE(status), "bad continuing frame");
// Verify that the overflow list is now empty
if (nsnull != f->OverflowList()) {
printf("Overflow: overflow list should be empty (#3)\n");
return PR_FALSE;
}
// and that the continuing frame has the remaining children
if (f1->ChildCount() != (b->ChildCount() - f->ChildCount())) {
printf("Overflow: continuing frame child count is wrong (#3): %d\n", f1->ChildCount());
return PR_FALSE;
}
// Verify that the content offsets of the continuing frame are correct
if (f1->GetFirstContentOffset() != f1->FirstChild()->GetIndexInParent()) {
printf("Overflow: continuing frame bad first content offset (#3): %d\n", f1->GetFirstContentOffset());
return PR_FALSE;
}
if (f1->GetLastContentOffset() != (f1->LastChild()->GetIndexInParent())) {
printf("Overflow: continuing frame bad last content offset (#3): %d\n", f1->GetLastContentOffset());
return PR_FALSE;
}
NS_RELEASE(b);
return PR_TRUE;
}
// Test handling of pushing/pulling children
//
// Here's what this function tests:
// 1. continuing frames pick up where their prev-in-flow left off
// 2. pulling up a child from a next-in-flow
// 3. pushing a child frame to a next-in-flow that already has children
// 4. pushing a child frame to an empty next-in-flow
// 5. pulling up children from a next-in-flow that has an overflow list
// 6. pulling up all the children across an empty frame
// 7. pulling up only some of the children across an empty frame
// 8. partially pulling up a child from a next-in-flow
static PRBool
TestPushingPulling(nsPresContext* presContext)
{
// Create an HTML container
nsIContent* b;
NS_NewHTMLContainer(&b, NS_NewAtom("span"));
// Append three fixed width elements.
b->AppendChildTo(new FixedSizeContent(100, 100));
b->AppendChildTo(new FixedSizeContent(300, 300));
b->AppendChildTo(new FixedSizeContent(200, 200));
// Create an inline frame for the HTML container and set its
// style context
InlineFrame* f = new InlineFrame(b, 0, nsnull);
nsRefPtr<nsStyleContext> styleContext;
styleContext = presContext->StyleSet()->ResolveStyleFor(b, nsnull);
f->SetStyleContext(styleContext);
// Reflow the inline frame so only the first frame fits
nsReflowMetrics reflowMetrics;
nsSize maxSize(100, 1000);
nsReflowStatus status;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(NS_FRAME_IS_NOT_COMPLETE(status), "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
///////////////////////////////////////////////////////////////////////////
// Test #1
// Create a continuing inline frame and test that it picks up with the second
// child frame. See TestOverflow() for checking the case where the continuing
// frame uses the overflow list, and TestSplittableChildren() for the
// case where the last child isn't complete
NS_ASSERTION(nsnull == f->OverflowList(), "unexpected overflow list");
InlineFrame* f1 = new InlineFrame(b, 0, nsnull);
f1->SetStyleContext(f->GetStyleContext(presContext));
f->SetNextSibling(f1);
f->SetNextInFlow(f1);
f1->SetPrevInFlow(f);
// Reflow the continuing inline frame. It should have the remainder of the
// children
maxSize.width = 1000;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(NS_FRAME_IS_COMPLETE(status), "bad continuing frame");
// Verify that the continuing inline frame has the remaining children
if (f1->ChildCount() != (b->ChildCount() - f->ChildCount())) {
printf("PushPull: continuing frame child count is wrong (#1): %d\n", f1->ChildCount());
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #2
// Reflow the first inline frame so that two child frames now fit. This tests
// pulling up a child frame from the next-in-flow
maxSize.width = 400;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 2, "bad child count");
NS_ASSERTION(f1->ChildCount() == 1, "bad continuing child count");
// Verify the last content offset of the first inline frame
if (f->GetLastContentOffset() != (f->ChildCount() - 1)) {
printf("PushPull: bad last content offset (#2): %d\n", f->GetLastContentOffset());
return PR_FALSE;
}
// Verify that the first/last content offsets of the continuing inline frame
// were updated correctly after pulling up a child
if (f1->GetFirstContentOffset() != f1->FirstChild()->GetIndexInParent()) {
printf("PushPull: continuing frame bad first content offset (#2): %d\n", f1->GetFirstContentOffset());
return PR_FALSE;
}
if (f1->GetLastContentOffset() != (f1->LastChild()->GetIndexInParent())) {
printf("PushPull: continuing frame bad last content offset (#2): %d\n", f1->GetLastContentOffset());
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #3
// Now reflow the inline frame so only the first child fits and verify the pushing
// code works correctly.
//
// This tests the case where we're pushing to a next-in-flow that already has
// child frames
maxSize.width = f->FirstChild()->GetWidth();
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(NS_FRAME_IS_NOT_COMPLETE(status), "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// Verify the last content offset of the first inline frame
if (f->GetLastContentOffset() != 0) {
printf("PushPull: bad last content offset after push (#3): %d\n",
f->GetLastContentOffset());
return PR_FALSE;
}
// Verify the continuing inline frame has two children
if (f1->ChildCount() != 2) {
printf("PushPull: continuing child bad child count after push (#3): %d\n",
f1->ChildCount());
return PR_FALSE;
}
// Verify its first content offset is correct
if (f1->GetFirstContentOffset() != f1->FirstChild()->GetIndexInParent()) {
printf("PushPull: continuing child bad first content offset after push (#3): %d\n",
f1->GetFirstContentOffset());
return PR_FALSE;
}
// and that the last content offset is correct
if (f1->GetLastContentOffset() != (f1->LastChild()->GetIndexInParent())) {
printf("PushPull: continuing child bad last content offset after push (#3): %d\n",
f1->GetLastContentOffset());
return PR_FALSE;
}
// Now pull all the frames back to the first inline frame
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
// Verify the child count and last content offset of the first inline frame
if ((f->ChildCount() != b->ChildCount()) ||
(f->GetLastContentOffset() != (f->ChildCount() - 1))) {
printf("PushPull: failed to pull up all the child frames (#3)\n");
return PR_FALSE;
}
// The continuing inline frame should have no children
if (f1->ChildCount() != 0) {
printf("PushPull: continuing child is not empty after pulling up all children (#3)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #4
// Now reflow the inline frame so only the first child fits and verify the pushing
// code works correctly.
//
// This tests the case where we're pushing to an empty next-in-flow
maxSize.width = f->FirstChild()->GetWidth();
f1->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow check of next-in-flow
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// Verify the continuing inline frame has two children
if (f1->ChildCount() != 2) {
printf("PushPull: continuing child bad child count after push (#4): %d\n",
f1->ChildCount());
return PR_FALSE;
}
// Verify its first content offset is correct
if (f1->GetFirstContentOffset() != f1->FirstChild()->GetIndexInParent()) {
printf("PushPull: continuing child bad first content offset after push (#4): %d\n",
f1->GetFirstContentOffset());
return PR_FALSE;
}
// and that the last content offset is correct
if (f1->GetLastContentOffset() != (f1->LastChild()->GetIndexInParent())) {
printf("PushPull: continuing child bad last content offset after push (#4): %d\n",
f1->GetLastContentOffset());
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #5
// Test pulling up children from a next-in-flow that has an overflow list.
// Reflow f1 so only one child fits
maxSize.width = 300;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION((f1->ChildCount() == 1) && (f1->GetLastContentOffset() == 1), "bad reflow");
NS_ASSERTION(nsnull != f1->OverflowList(), "no overflow list");
// Now reflow the first inline frame so it's wide enough for all the child frames
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
NS_ASSERTION((f->ChildCount() == 3) && (f->GetLastContentOffset() == 2), "bad mapping");
// The second frame should be be empty, and it should not have an overflow list
if (f1->ChildCount() != 0) {
printf("PushPull: continuing child isn't empty (#5)\n");
return PR_FALSE;
}
if (nsnull != f1->OverflowList()) {
printf("PushPull: continuing child still has overflow list (#5)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #6
// Test pulling up all the child frames across an empty frame, i.e. a frame
// from which we've already pulled up all the children
//
// Set it up so that there's one frame in 'f' and one frame in 'f1'
maxSize.width = 100;
f1->BreakFromPrevFlow();
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION((f->ChildCount() == 1) && (f->GetLastContentOffset() == 0), "bad mapping");
maxSize.width = 300;
f1->AppendToFlow(f);
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION((f1->ChildCount() == 1) && (f1->GetLastContentOffset() == 1), "bad mapping");
NS_ASSERTION(nsnull != f1->OverflowList(), "no overflow list");
// Now create a third inline frame and have it map the third child frame
InlineFrame* f2 = new InlineFrame(b, 0, nsnull);
f2->SetStyleContext(f->GetStyleContext(presContext));
f1->SetNextSibling(f2);
f1->SetNextInFlow(f2);
f2->SetPrevInFlow(f1);
maxSize.width = 1000;
status = f2->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
NS_ASSERTION(nsnull == f1->OverflowList(), "overflow list");
// Now reflow the first inline frame wide enough so all the child frames fit
// XXX This isn't enough and we need one more test. We need to first
// pull up just one child, then reflow the first frame again so all
// the child frames fit.
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify that the inline frame is complete
if (NS_FRAME_NOT_IS_COMPLETE(status)) {
printf("PushPull: failed to pull-up across empty frame (#6)\n");
return PR_FALSE;
}
// Verify the inline frame maps all the children
if ((f->ChildCount() != 3) || (f->GetLastContentOffset() != 2)) {
printf("PushPull: bad last content offset or child count (#6)\n");
return PR_FALSE;
}
// Verify that the next two inline frames are empty
if (f1->ChildCount() != 0) {
printf("PushPull: second frame isn't empty (#6)\n");
return PR_FALSE;
}
if (f2->ChildCount() != 0) {
printf("PushPull: third frame isn't empty (#6)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #7
// Test pulling up only some of the child frames across an empty frame, i.e.
// a frame from which we've already pulled up all the children
//
// Set it up so that there's one child frame in the first inline frame
maxSize.width = 100;
f1->BreakFromPrevFlow();
f2->BreakFromPrevFlow();
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
NS_ASSERTION(f->GetLastContentOffset() == 0, "bad mapping");
// And one frame in f1
maxSize.width = 300;
f1->AppendToFlow(f);
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f1->ChildCount() == 1, "bad child count");
NS_ASSERTION((f1->GetFirstContentOffset() == 1) && (f1->GetLastContentOffset() == 1), "bad mapping");
// And one frame in f2
f2->AppendToFlow(f1);
maxSize.width = 1000;
status = f2->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
NS_ASSERTION(f2->ChildCount() == 1, "bad child count");
NS_ASSERTION((f2->GetFirstContentOffset() == 2) && (f2->GetLastContentOffset() == 2), "bad mapping");
// Now reflow the first inline frame wide enough so that the first two child
// frames fit
maxSize.width = 400;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// Verify that the first inline frame is not complete
if (NS_FRAME_IS_COMPLETE(status)) {
printf("PushPull: bad status (#7)\n");
return PR_FALSE;
}
// Verify the first inline frame maps two children
if ((f->ChildCount() != 2) || (f->GetLastContentOffset() != 1)) {
printf("PushPull: bad last content offset or child count (#7)\n");
return PR_FALSE;
}
// Verify that the second inline frame is empty
if (f1->ChildCount() != 0) {
printf("PushPull: second frame isn't empty (#7)\n");
return PR_FALSE;
}
// and that it's content offset must be correct, because the third inline
// frame isn't empty
// Note: don't check the last content offset, because for empty frames the value
// is undefined...
if (f1->GetFirstContentOffset() != f->NextChildOffset()) {
printf("PushPull: second frame bad first content offset (#7): %d\n", f1->GetFirstContentOffset());
return PR_FALSE;
}
// Verify that the third inline frame has one child frame
if (f2->ChildCount() != 1) {
printf("PushPull: third frame bad child count (#7): %d\n", f2->ChildCount());
return PR_FALSE;
}
// and that its content offsets are correct
if ((f2->GetFirstContentOffset() != 2) || (f2->GetLastContentOffset() != 2)) {
printf("PushPull: third frame bad content mapping (#7)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #8
// Test partially pulling up a child. First get all the child frames back into
// the first inline frame, and get rid of the third inline frame
f2->BreakFromPrevFlow();
f1->SetNextSibling(nsnull);
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 3, "bad child count");
f1->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow checks below
// Now reflow the first inline frame so there are two frames pushed to the
// next-in-flow
maxSize.width = 100;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION((f->ChildCount() == 1) && (f1->ChildCount() == 2), "bad child count");
// Reflow the first inline frame so that part only part of the second child frame
// fits. In order to test this we need to make the second piece of content
// splittable
FixedSizeContent* c2 = (FixedSizeContent*)b->ChildAt(1);
c2->SetIsSplittable(PR_TRUE);
maxSize.width = 250;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
// The first inline frame should have two child frames
if (f->ChildCount() != 2) {
printf("PushPull: bad child count when pulling up (#8): %d\n", f->ChildCount());
return PR_FALSE;
}
// it should have a last content offset of 1, and it's last content should
// not be complete
if ((f->GetLastContentOffset() != 1) || f->LastContentIsComplete()) {
printf("PushPull: bad content mapping when pulling up (#8)\n");
return PR_FALSE;
}
// The continuing inline frame should also have two child frame
if (f1->ChildCount() != 2) {
printf("PushPull: continuing frame bad child count (#8): %d\n", f1->ChildCount());
return PR_FALSE;
}
// and correct content offsets
if ((f1->GetFirstContentOffset() != f1->FirstChild()->GetIndexInParent()) ||
(f1->GetLastContentOffset() != (f1->LastChild()->GetIndexInParent()))) {
printf("PushPull: continuing frame bad mapping (#8)\n");
return PR_FALSE;
}
// The first child of f1 should be in the flow
if (f1->FirstChild()->GetPrevInFlow() != f->LastChild()) {
printf("PushPull: continuing frame bad flow (#8)\n");
return PR_FALSE;
}
NS_RELEASE(b);
return PR_TRUE;
}
// Test handling of splittable children
//
// Here's what this function tests:
// 1. reflow unmapped correctly handles child frames that need to split
// 2. reflow mapped correctly handles when the last child is incomplete
// 3. reflow mapped correctly handles the case of a child that's incomplete
// and that already has a next-in-flow
// 4. reflow mapped handles the case where a child that's incomplete now fits
// when reflowed again
// a) when the child has a next-in-flow
// b) when the child doesn't have a next-in-flow
// 5. continuing frame checks its prev-in-flow's last child and if it's incomplete
// creates a continuing frame
// 6. reflow mapped correctly handles child frames that need to be continued
// 7. pulling up across empty frames resulting from deleting a child's next-in-flows
static PRBool
TestSplittableChildren(nsPresContext* presContext)
{
// Create an HTML container
nsIContent* b;
NS_NewHTMLContainer(&b, NS_NewAtom("span"));
// Append three fixed width elements that can split
b->AppendChildTo(new FixedSizeContent(100, 100, PR_TRUE));
b->AppendChildTo(new FixedSizeContent(300, 300, PR_TRUE));
b->AppendChildTo(new FixedSizeContent(200, 200, PR_TRUE));
// Create an inline frame for the HTML container and set its
// style context
InlineFrame* f = new InlineFrame(b, 0, nsnull);
nsRefPtr<nsStyleContext> styleContext;
styleContext = presContext->StyleSet()->ResolveStyleFor(b, nsnull);
f->SetStyleContext(styleContext);
///////////////////////////////////////////////////////////////////////////
// Test #1
// Reflow the inline frame so only half of the first frame fits. This tests
// reflow unmapped
nsReflowMetrics reflowMetrics;
nsSize maxSize(50, 1000);
nsIFrame::ReflowStatus status;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// Verify that the inline frame isn't complete
if (nsIFrame::frNotComplete != status) {
printf("Splittable: inline frame should be incomplete (#1): %d\n", status);
return PR_FALSE;
}
// Verify the last content offset is correct
if (f->GetLastContentOffset() != 0) {
printf("Splittable: wrong last content offset (#1): %d\n", f->GetLastContentOffset());
return PR_FALSE;
}
// Verify that the last child isn't complete
if (f->LastContentIsComplete()) {
printf("Splittable: child should not be complete (#1)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #2
// Now reflow the inline frame again and test reflow mapped
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// The inline frame should still be incomplete with a last content offset of 0
if ((nsIFrame::frNotComplete != status) ||
(f->GetLastContentOffset() != 0) || (f->LastContentIsComplete())) {
printf("Splittable: reflow mapped failed (#2)\n");
return PR_FALSE;
}
// There should be an overflow list containing the first child's next-in-flow
if ((nsnull == f->OverflowList()) ||
(f->OverflowList() != f->FirstChild()->GetNextInFlow())) {
printf("Splittable: should be an overflow list (#2)\n");
return PR_FALSE;
}
// Verify that the first child has a null next sibling. Children on the overflow
// list should be disconnected from the mapped children
if (nsnull != f->FirstChild()->GetNextSibling()) {
printf("Splittable: first child has overflow list as next sibling (#2)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #3
// Reflow it again with the same size and make sure we don't add any more
// frames to the overflow list
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// The inline frame should still have a last content offset of 0 and
// the last content child should still be incomplete
if ((f->GetLastContentOffset() != 0) || (f->LastContentIsComplete())) {
printf("Splittable: reflow mapped again failed (#3)\n");
return PR_FALSE;
}
// The overflow list should still have only one child
if (LengthOf(f->OverflowList()) != 1) {
printf("Splittable: reflow mapped again has bad overflow list (#3)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #4a
// Now reflow the inline frame so that the the first child now completely fits.
// This tests how reflow mapped handles the case of a child that's incomplete
// and has a next-in-flow, and when reflowed now fits.
maxSize.width = 100;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// The inline frame should have a last content offset of 0
if (f->GetLastContentOffset() != 0) {
printf("Splittable: wrong last content offset (#4a): %d\n",
f->GetLastContentOffset());
return PR_FALSE;
}
// The first child should now be complete
if (!f->LastContentIsComplete()) {
printf("Splittable: last child isn't complete (#4a)\n");
return PR_FALSE;
}
// it should not have a next-in-flow
if (nsnull != f->FirstChild()->GetNextInFlow()) {
printf("Splittable: unexpected next-in-flow (#4a)\n");
return PR_FALSE;
}
// and there should be no overflow list
if (nsnull != f->OverflowList()) {
printf("Splittable: unexpected overflow list (#4a)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #4b
// This is a variation of the previous test where the child doesn't have
// a next-in-flow. Reflow the inline frame so the first child is incomplete
maxSize.width = 50;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(!f->LastContentIsComplete(), "last child should be incomplete");
NS_ASSERTION(nsnull != f->OverflowList(), "no overflow list");
NS_ASSERTION(f->FirstChild()->GetNextInFlow() == f->OverflowList(), "bad next-in-flow");
// Now get rid of the overflow list and the first child's next-in-flow
f->FirstChild()->SetNextInFlow(nsnull);
f->ClearOverflowList();
// Now reflow the inline frame so the first child fits. This tests that we
// correctly reset mLastContentIsComplete when the frame that was incomplete
// doesn't have a next-in-flow
maxSize.width = 100;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION(f->ChildCount() == 1, "bad child count");
// Verify that the first child is complete
if (!f->LastContentIsComplete()) {
printf("Splittable: last content is NOT complete (#4b)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #5
// Create a continuing inline frame and have it pick up with the second
// child
InlineFrame* f1 = new InlineFrame(b, 0, nsnull);
f1->SetStyleContext(f->GetStyleContext(presContext));
f->SetNextSibling(f1);
f->SetNextInFlow(f1);
f1->SetPrevInFlow(f);
// Reflow the continuing inline frame so its second frame is not complete
maxSize.width = 150;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
NS_ASSERTION((f1->GetFirstContentOffset() == 1) && (f1->GetLastContentOffset() == 1), "bad offsets");
NS_ASSERTION(!f1->LastContentIsComplete(), "should not be complete");
// Create a third continuing inline frame and verify that it picks up by continuing
// the second child frame. This tests the case where the prev-in-flow's last
// child isn't complete and there's no overflow list
NS_ASSERTION(nsnull == f1->OverflowList(), "unexpected overflow list");
InlineFrame* f2 = new InlineFrame(b, 0, nsnull);
f2->SetStyleContext(f->GetStyleContext(presContext));
f1->SetNextSibling(f2);
f1->SetNextInFlow(f2);
f2->SetPrevInFlow(f1);
// Make the width large enough for all the remaining frames to fit
maxSize.width = 1000;
status = f2->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
// Verify the first child is a continuing frame of its prev-in-flow's
// child
if (f2->FirstChild()->GetPrevInFlow() != f1->FirstChild()) {
printf("Splittable: child frame bad prev-in-flow (#5)\n");
return PR_FALSE;
}
// Verify the two child frames have the same content offset and so
// do their parents
if ((f2->FirstChild()->GetIndexInParent() != f1->FirstChild()->GetIndexInParent()) ||
(f2->GetFirstContentOffset() != f1->GetFirstContentOffset())) {
printf("Splittable: bad content offset (#5)\n");
return PR_FALSE;
}
// Verify that the third continuing inline frame is complete and that it has two children
if ((nsnull != f2->FirstChild()->GetNextInFlow()) || (f2->ChildCount() != 2)) {
printf("Splittable: bad continuing frame (#5)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #6
// Test how reflow mapped handles the case where an existing child doesn't
// fit when reflowed. We care about the case where the child doesn't have
// a continuing frame and so we have to create one
//
// Reflow the first inline frame so all the child frames fit
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
NS_ASSERTION((f->ChildCount() == 3) && (f->GetLastContentOffset() == 2), "bad count");
f1->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow checks
f2->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow checks
// Now reflow it so that the first child needs to be continued
maxSize.width = 50;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
// Verify there's only one child in f
if (f->ChildCount() != 1) {
printf("Splittable: bad child count (#6): %d\n", f->ChildCount());
return PR_FALSE;
}
// Verify the last content offset and that the last content is not complete
if ((f->GetLastContentOffset() != 0) || f->LastContentIsComplete()) {
printf("Splittable: bad content mapping (#6)\n");
return PR_FALSE;
}
// Verify that there are three children in the next-in-flow, and that
// the first child is a continuing frame
if (f1->ChildCount() != 3) {
printf("Splittable: continuing frame bad child count (#6): %d\n",
f1->ChildCount());
return PR_FALSE;
}
if (f1->FirstChild()->GetPrevInFlow() != f->LastChild()) {
printf("Splittable: continuing frame bad child flow (#6)\n");
return PR_FALSE;
}
// Verify the next-in-flow's content offsets
if ((f1->GetFirstContentOffset() != 0) || (f1->GetLastContentOffset() != 2)) {
printf("Splittable: continuing frame bad mapping (#6)\n");
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #7
// Test pulling up across empty frames resulting from deleting a child
// frame's next-in-flows
//
// Reflow the first inline frame so all the child frames fit
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frComplete == status, "bad status");
NS_ASSERTION((f->ChildCount() == 3) && (f->GetLastContentOffset() == 2), "bad count");
f1->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow checks
f2->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow checks
// Now reflow the first inline frame so that the second child frame is continued
maxSize.width = 200;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
// Verify the first inline frame's child count is correct
if (f->ChildCount() != 2) {
printf("Splittable: bad child count (#7): %d\n", f->ChildCount());
return PR_FALSE;
}
// Verify the last content offset and that the last frame isn't complete
if ((f->GetLastContentOffset() != 1) || (f->LastContentIsComplete())) {
printf("Splittable: bad mapping (#7)\n");
return PR_FALSE;
}
// The second inline frame should have two children as well
if (f1->ChildCount() != 2) {
printf("Splittable: continuing frame bad child count (#7): %d\n", f1->ChildCount());
return PR_FALSE;
}
// and that its content offsets are correct
if ((f1->GetFirstContentOffset() != 1) || (f1->GetLastContentOffset() != 2)) {
printf("Splittable: continuing frame bad mapping (#7)\n");
return PR_FALSE;
}
// Now reflow the second inline frame so that only the continuing child frame
// fits and the last frame is pushed to the third inline frame
maxSize.width = 200;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
NS_ASSERTION(nsIFrame::frNotComplete == status, "bad status");
// Verify the second inline frame's child count and last content offset
if ((f1->ChildCount() != 1) || (f1->GetLastContentOffset() != 1)) {
printf("Splittable: continuing frame bad child count or mapping (#7)\n");
return PR_FALSE;
}
// Verify the third inline frame maps the last child frame and has correct
// content offsets
if ((f2->ChildCount() != 1) ||
(f2->GetFirstContentOffset() != 2) || (f2->GetLastContentOffset() != 2)) {
printf("Splittable: last continuing frame bad child count or mapping (#7)\n");
return PR_FALSE;
}
// Now the real test. Reflow the first inline frame so all the child frames fit.
// What we're testing is that the pull-up code correctly handles the case where
// there's an empty frame that results from the second child frame's next-in-flow
// being deleted
maxSize.width = 1000;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, nsnull);
// The inline frame should be complete and map all three child frames
if ((nsIFrame::frComplete != status) || (f->ChildCount() != 3)) {
printf("Splittable: first inline frame does not map all the child frames (#7)\n");
return PR_FALSE;
}
NS_RELEASE(b);
return PR_TRUE;
}
// Test computing the max element size
//
// Here's what this function tests:
// 1. reflow unmapped correctly computes the max element size
// 2. reflow mapped correctly computes the max element size
// 3. reflow mapped/unmapped work together to compute the correct result
// 4. pulling-up children code computes the correct result
static PRBool
TestMaxElementSize(nsPresContext* presContext)
{
// Create an HTML container
nsIContent* b;
NS_NewHTMLContainer(&b, NS_NewAtom("span"));
// Append three fixed width elements.
b->AppendChildTo(new FixedSizeContent(100, 100));
b->AppendChildTo(new FixedSizeContent(300, 300));
b->AppendChildTo(new FixedSizeContent(200, 200));
// Create an inline frame for the HTML container and set its
// style context
InlineFrame* f = new InlineFrame(b, 0, nsnull);
nsRefPtr<nsStyleContext> styleContext;
styleContext = presContext->StyleSet()->ResolveStyleFor(b, nsnull);
f->SetStyleContext(styleContext);
///////////////////////////////////////////////////////////////////////////
// Test #1
// Reflow the inline frame and check our max element size computation when reflowing
// unmapped children
//
// Note: we've already tested elsewhere that we correctly handle the case
// where aMaxElementSize is NULL and that we don't GPF...
nsSize maxElementSize(0, 0);
nsReflowMetrics reflowMetrics;
nsSize maxSize(1000, 1000);
nsIFrame::ReflowStatus status;
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
// Verify that the max element size is correct
NS_ASSERTION(nsIFrame::frComplete == status, "isn't complete");
if ((maxElementSize.width != f->MaxChildWidth()) ||
(maxElementSize.height != f->MaxChildHeight())) {
printf("MaxElementSize: wrong result in reflow unmapped (#1): (%d, %d)\n",
maxElementSize.width, maxElementSize.height);
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #2
// Now compute it again and check the computation when reflowing
// mapped children
maxElementSize.SizeTo(0, 0);
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION(nsIFrame::frComplete == status, "isn't complete");
if ((maxElementSize.width != f->MaxChildWidth()) ||
(maxElementSize.height != f->MaxChildHeight())) {
printf("MaxElementSize: wrong result in reflow mapped (#2): (%d, %d)\n",
maxElementSize.width, maxElementSize.height);
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #3
// Check that reflow mapped/unmapped work together. Reflow the inline frame
// so that only the first two frames (including the largest frame) fit
nsIFrame* maxChild = f->ChildAt(1);
nsPoint origin;
maxChild->GetOrigin(origin);
maxSize.width = origin.x + maxChild->GetWidth();
maxElementSize.SizeTo(0, 0);
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
if ((nsIFrame::frNotComplete != status) || (f->ChildCount() != 2)) {
printf("MaxElementSize: reflow failed (#3)\n");
return PR_FALSE;
}
// Now reflow it again and check that the maximum element size is correct
maxSize.width = 1000;
maxElementSize.SizeTo(0, 0);
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION(nsIFrame::frComplete == status, "isn't complete");
if ((maxElementSize.width != f->MaxChildWidth()) ||
(maxElementSize.height != f->MaxChildHeight())) {
printf("MaxElementSize: wrong result in reflow mapped/unmapped (#3): (%d, %d)\n",
maxElementSize.width, maxElementSize.height);
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// Test #4
// Last thing to check is pulling up children. Reflow it so only the first two
// frames (including the largest frame) fit
maxChild = f->ChildAt(1);
maxChild->GetOrigin(origin);
maxSize.width = origin.x + maxChild->GetWidth();
maxElementSize.SizeTo(0, 0);
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION(f->ChildCount() == 2, "unexpected child count");
// Create a continuing inline frame and reflow it
InlineFrame* f1 = new InlineFrame(b, 0, nsnull);
f1->SetStyleContext(f->GetStyleContext(presContext));
f->SetNextSibling(f1);
f->SetNextInFlow(f1);
f1->SetPrevInFlow(f);
maxSize.width = 1000;
status = f1->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION((nsIFrame::frComplete == status) && (f1->ChildCount() == 1), "bad continuing frame");
// Now reflow the first inline frame so all child frames fit, and verify the
// max element size is correct
maxElementSize.SizeTo(0, 0);
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION(nsIFrame::frComplete == status, "isn't complete");
NS_ASSERTION(f1->ChildCount() == 0, "pull-up failed");
if ((maxElementSize.width != f->MaxChildWidth()) ||
(maxElementSize.height != f->MaxChildHeight())) {
printf("MaxElementSize: wrong result in reflow mapped/pull-up (#4): (%d, %d)\n",
maxElementSize.width, maxElementSize.height);
return PR_FALSE;
}
// Now reflow it so that the largest size frame is in the continuing inline frame
f1->SetFirstContentOffset(f->NextChildOffset()); // don't trigger pre-reflow checks
maxSize.width = f->FirstChild()->GetWidth();
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION(f->ChildCount() == 1, "unexpected child count");
NS_ASSERTION(f1->ChildCount() == 2, "unexpected child count");
// Now reflow the first inline frame so all child frames fit, and verify the
// max element size is correct
maxSize.width = 1000;
maxElementSize.SizeTo(0, 0);
status = f->ResizeReflow(presContext, reflowMetrics, maxSize, &maxElementSize);
NS_ASSERTION(nsIFrame::frComplete == status, "isn't complete");
NS_ASSERTION(f1->ChildCount() == 0, "pull-up failed");
if ((maxElementSize.width != f->MaxChildWidth()) ||
(maxElementSize.height != f->MaxChildHeight())) {
printf("MaxElementSize: wrong result in reflow mapped/pull-up (#4): (%d, %d)\n",
maxElementSize.width, maxElementSize.height);
return PR_FALSE;
}
NS_RELEASE(b);
return PR_TRUE;
}
#endif
int main(int argc, char** argv)
{
#if 0
// Create test document and presentation context
MyDocument *myDoc = new MyDocument();
nsPresContext* presContext;
nsIDeviceContext *dx;
static NS_DEFINE_IID(kDeviceContextCID, NS_DEVICE_CONTEXT_CID);
nsresult rv = CallCreateInstance(kDeviceContextCID, &dx);
if (NS_OK == rv) {
dx->Init(nsull);
dx->SetDevUnitsToAppUnits(dx->DevUnitsToTwips());
dx->SetAppUnitsToDevUnits(dx->TwipsToDevUnits());
}
NS_NewGalleyContext(&presContext);
presContext->Init(dx, nsnull);
// Test basic reflowing of unmapped children
if (!TestReflowUnmapped(presContext)) {
return -1;
}
// Test the case where the frame max size is too small for even one child frame
if (!TestChildrenThatDontFit(presContext)) {
return -1;
}
if (!TestOverflow(presContext)) {
return -1;
}
if (!TestPushingPulling(presContext)) {
return -1;
}
if (!TestSplittableChildren(presContext)) {
return -1;
}
if (!TestMaxElementSize(presContext)) {
return -1;
}
/*
if (!TestIncremental(presContext)) {
return -1;
}
if (!TestBorderPadding(presContext)) {
return -1;
}
if (!TestChildMargins(presContext)) {
return -1;
}
if (!TestAlignment(presContext)) {
return -1;
}
if (!TestDisplayNone(presContext)) {
return -1;
}
if (!TestRelativePositioning(presContext)) {
return -1;
}
if (!TestAbsolutePositiong(presContext)) {
return -1;
}
*/
presContext->Release();
myDoc->Release();
#endif
return 0;
}
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