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gecko/layout/generic/nsFrameFrame.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):
* Travis Bogard <travis@netscape.com>
* HÂkan Waara <hwaara@chello.se>
*
* 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 ***** */
/*
* rendering object for replaced elements that contain a document, such
* as <frame>, <iframe>, and some <object>s
*/
#include "nsCOMPtr.h"
#include "nsLeafFrame.h"
#include "nsGenericHTMLElement.h"
#include "nsIDocShell.h"
#include "nsIDocShellLoadInfo.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShellTreeNode.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIBaseWindow.h"
#include "nsIContentViewer.h"
#include "nsIMarkupDocumentViewer.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIComponentManager.h"
#include "nsFrameManager.h"
#include "nsIStreamListener.h"
#include "nsIURL.h"
#include "nsNetUtil.h"
#include "nsIDocument.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsWidgetsCID.h"
#include "nsViewsCID.h"
#include "nsGkAtoms.h"
#include "nsIScrollableView.h"
#include "nsStyleCoord.h"
#include "nsStyleContext.h"
#include "nsStyleConsts.h"
#include "nsFrameSetFrame.h"
#include "nsIDOMHTMLFrameElement.h"
#include "nsIDOMHTMLIFrameElement.h"
#include "nsIDOMXULElement.h"
#include "nsIFrameLoader.h"
#include "nsIScriptSecurityManager.h"
#include "nsXPIDLString.h"
#include "nsIScrollable.h"
#include "nsINameSpaceManager.h"
#include "nsWeakReference.h"
#include "nsIDOMWindow.h"
#include "nsIDOMDocument.h"
#include "nsIRenderingContext.h"
#include "nsIFrameFrame.h"
#include "nsAutoPtr.h"
#include "nsIDOMNSHTMLDocument.h"
#include "nsDisplayList.h"
#include "nsUnicharUtils.h"
#include "nsIReflowCallback.h"
#include "nsIScrollableFrame.h"
#include "nsIObjectLoadingContent.h"
#include "nsLayoutUtils.h"
#ifdef MOZ_XUL
#include "nsXULPopupManager.h"
#endif
// For Accessibility
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIServiceManager.h"
static NS_DEFINE_CID(kCChildCID, NS_CHILD_CID);
/******************************************************************************
* nsSubDocumentFrame
*****************************************************************************/
class nsSubDocumentFrame : public nsLeafFrame,
public nsIFrameFrame,
public nsIReflowCallback
{
public:
nsSubDocumentFrame(nsStyleContext* aContext);
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
NS_DECL_QUERYFRAME
virtual nsIAtom* GetType() const;
virtual PRBool IsFrameOfType(PRUint32 aFlags) const
{
// nsLeafFrame is already eReplacedContainsBlock, but that's somewhat bogus
return nsLeafFrame::IsFrameOfType(aFlags &
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
}
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow);
virtual void Destroy();
virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
virtual IntrinsicSize GetIntrinsicSize();
virtual nsSize GetIntrinsicRatio();
virtual nsSize ComputeAutoSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, PRBool aShrinkWrap);
virtual nsSize ComputeSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder, nsSize aPadding,
PRBool aShrinkWrap);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType);
// if the content is "visibility:hidden", then just hide the view
// and all our contents. We don't extend "visibility:hidden" to
// the child content ourselves, since it belongs to a different
// document and CSS doesn't inherit in there.
virtual PRBool SupportsVisibilityHidden() { return PR_FALSE; }
#ifdef ACCESSIBILITY
NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
#endif
// nsIFrameFrame
NS_IMETHOD GetDocShell(nsIDocShell **aDocShell);
NS_IMETHOD BeginSwapDocShells(nsIFrame* aOther);
virtual void EndSwapDocShells(nsIFrame* aOther);
NS_IMETHOD VerifyTree() const;
// nsIReflowCallback
virtual PRBool ReflowFinished();
virtual void ReflowCallbackCanceled();
protected:
nsIntSize GetMargin();
PRBool IsInline() { return mIsInline; }
nsresult ShowDocShell();
nsresult CreateViewAndWidget(nsContentType aContentType);
virtual nscoord GetIntrinsicWidth();
virtual nscoord GetIntrinsicHeight();
virtual PRIntn GetSkipSides() const;
// Hide or show our document viewer
void HideViewer();
void ShowViewer();
/* Obtains the frame we should use for intrinsic size information if we are
* an HTML <object>, <embed> or <applet> (a replaced element - not <iframe>)
* and our sub-document has an intrinsic size. The frame returned is the
* frame for the document element of the document we're embedding.
*
* Called "Obtain*" and not "Get*" because of comment on GetDocShell that
* says it should be called ObtainDocShell because of it's side effects.
*/
nsIFrame* ObtainIntrinsicSizeFrame();
nsCOMPtr<nsIFrameLoader> mFrameLoader;
nsIView* mInnerView;
PRPackedBool mDidCreateDoc;
PRPackedBool mIsInline;
PRPackedBool mPostedReflowCallback;
};
nsSubDocumentFrame::nsSubDocumentFrame(nsStyleContext* aContext)
: nsLeafFrame(aContext), mDidCreateDoc(PR_FALSE),
mIsInline(PR_FALSE), mPostedReflowCallback(PR_FALSE)
{
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsSubDocumentFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(mContent);
return accService->CreateOuterDocAccessible(node, aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
NS_QUERYFRAME_HEAD(nsSubDocumentFrame)
NS_QUERYFRAME_ENTRY(nsIFrameFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame)
NS_IMETHODIMP
nsSubDocumentFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
// determine if we are a <frame> or <iframe>
if (aContent) {
nsCOMPtr<nsIDOMHTMLFrameElement> frameElem = do_QueryInterface(aContent);
mIsInline = frameElem ? PR_FALSE : PR_TRUE;
}
nsresult rv = nsLeafFrame::Init(aContent, aParent, aPrevInFlow);
if (NS_FAILED(rv))
return rv;
// We are going to create an inner view. If we need a view for the
// OuterFrame but we wait for the normal view creation path in
// nsCSSFrameConstructor, then we will lose because the inner view's
// parent will already have been set to some outer view (e.g., the
// canvas) when it really needs to have this frame's view as its
// parent. So, create this frame's view right away, whether we
// really need it or not, and the inner view will get it as the
// parent.
if (!HasView()) {
rv = nsHTMLContainerFrame::CreateViewForFrame(this, PR_TRUE);
NS_ENSURE_SUCCESS(rv, rv);
}
nsIView* view = GetView();
if (aParent->GetStyleDisplay()->mDisplay == NS_STYLE_DISPLAY_DECK
&& !view->HasWidget()) {
view->CreateWidget(kCChildCID);
}
ShowViewer();
return NS_OK;
}
void
nsSubDocumentFrame::ShowViewer()
{
if (!PresContext()->IsDynamic()) {
// We let the printing code take care of loading the document; just
// create a widget for it to use
nsresult rv = CreateViewAndWidget(eContentTypeContent);
if (NS_FAILED(rv)) {
return;
}
} else {
nsresult rv = ShowDocShell();
if (NS_FAILED(rv)) {
return;
}
mDidCreateDoc = PR_TRUE;
}
}
PRIntn
nsSubDocumentFrame::GetSkipSides() const
{
return 0;
}
NS_IMETHODIMP
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (!IsVisibleForPainting(aBuilder))
return NS_OK;
nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
NS_ENSURE_SUCCESS(rv, rv);
if (!mInnerView)
return NS_OK;
nsIView* subdocView = mInnerView->GetFirstChild();
if (!subdocView)
return NS_OK;
nsIFrame* f = static_cast<nsIFrame*>(subdocView->GetClientData());
if (!f)
return NS_OK;
nsRect dirty = aDirtyRect - f->GetOffsetTo(this);
aBuilder->EnterPresShell(f, dirty);
// Clip children to the child root frame's rectangle
nsDisplayList childItems;
rv = f->BuildDisplayListForStackingContext(aBuilder, dirty, &childItems);
if (NS_SUCCEEDED(rv)) {
rv = aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplayClip(nsnull, this, &childItems,
nsRect(aBuilder->ToReferenceFrame(f), f->GetSize())));
// delete childItems in case of OOM
childItems.DeleteAll();
}
aBuilder->LeavePresShell(f, dirty);
return rv;
}
nscoord
nsSubDocumentFrame::GetIntrinsicWidth()
{
if (!IsInline()) {
return 0; // HTML <frame> has no useful intrinsic width
}
if (mContent->IsNodeOfType(nsINode::eXUL)) {
return 0; // XUL <iframe> and <browser> have no useful intrinsic width
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nsnull,
"Intrinsic width should come from the embedded document.");
// We must be an HTML <iframe>. Default to a width of 300, for IE
// compat (and per CSS2.1 draft).
return nsPresContext::CSSPixelsToAppUnits(300);
}
nscoord
nsSubDocumentFrame::GetIntrinsicHeight()
{
// <frame> processing does not use this routine, only <iframe>
NS_ASSERTION(IsInline(), "Shouldn't have been called");
if (mContent->IsNodeOfType(nsINode::eXUL)) {
return 0;
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nsnull,
"Intrinsic height should come from the embedded document.");
// Use 150px, for compatibility with IE, and per CSS2.1 draft.
return nsPresContext::CSSPixelsToAppUnits(150);
}
#ifdef DEBUG
NS_IMETHODIMP nsSubDocumentFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("FrameOuter"), aResult);
}
#endif
nsIAtom*
nsSubDocumentFrame::GetType() const
{
return nsGkAtoms::subDocumentFrame;
}
/* virtual */ nscoord
nsSubDocumentFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_MIN_WIDTH(this, result);
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
result = subDocRoot->GetMinWidth(aRenderingContext);
} else {
result = GetIntrinsicWidth();
}
return result;
}
/* virtual */ nscoord
nsSubDocumentFrame::GetPrefWidth(nsIRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_PREF_WIDTH(this, result);
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
result = subDocRoot->GetPrefWidth(aRenderingContext);
} else {
result = GetIntrinsicWidth();
}
return result;
}
/* virtual */ nsIFrame::IntrinsicSize
nsSubDocumentFrame::GetIntrinsicSize()
{
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
return subDocRoot->GetIntrinsicSize();
}
return nsLeafFrame::GetIntrinsicSize();
}
/* virtual */ nsSize
nsSubDocumentFrame::GetIntrinsicRatio()
{
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
return subDocRoot->GetIntrinsicRatio();
}
return nsLeafFrame::GetIntrinsicRatio();
}
/* virtual */ nsSize
nsSubDocumentFrame::ComputeAutoSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, PRBool aShrinkWrap)
{
if (!IsInline()) {
return nsFrame::ComputeAutoSize(aRenderingContext, aCBSize,
aAvailableWidth, aMargin, aBorder,
aPadding, aShrinkWrap);
}
return nsLeafFrame::ComputeAutoSize(aRenderingContext, aCBSize,
aAvailableWidth, aMargin, aBorder,
aPadding, aShrinkWrap);
}
/* virtual */ nsSize
nsSubDocumentFrame::ComputeSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder, nsSize aPadding,
PRBool aShrinkWrap)
{
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
return nsLayoutUtils::ComputeSizeWithIntrinsicDimensions(
aRenderingContext, this,
subDocRoot->GetIntrinsicSize(),
subDocRoot->GetIntrinsicRatio(),
aCBSize, aMargin, aBorder, aPadding);
}
return nsLeafFrame::ComputeSize(aRenderingContext, aCBSize, aAvailableWidth,
aMargin, aBorder, aPadding, aShrinkWrap);
}
NS_IMETHODIMP
nsSubDocumentFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsSubDocumentFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
// printf("OuterFrame::Reflow %X (%d,%d) \n", this, aReflowState.availableWidth, aReflowState.availableHeight);
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d",
aReflowState.availableWidth, aReflowState.availableHeight));
aStatus = NS_FRAME_COMPLETE;
NS_ASSERTION(aPresContext->GetPresShell()->GetPrimaryFrameFor(mContent) == this,
"Shouldn't happen");
// "offset" is the offset of our content area from our frame's
// top-left corner.
nsPoint offset(0, 0);
if (IsInline()) {
// XUL <iframe> or <browser>, or HTML <iframe>, <object> or <embed>
nsresult rv = nsLeafFrame::DoReflow(aPresContext, aDesiredSize, aReflowState,
aStatus);
NS_ENSURE_SUCCESS(rv, rv);
offset = nsPoint(aReflowState.mComputedBorderPadding.left,
aReflowState.mComputedBorderPadding.top);
} else {
// HTML <frame>
SizeToAvailSize(aReflowState, aDesiredSize);
}
nsSize innerSize(aDesiredSize.width, aDesiredSize.height);
if (IsInline()) {
innerSize.width -= aReflowState.mComputedBorderPadding.LeftRight();
innerSize.height -= aReflowState.mComputedBorderPadding.TopBottom();
}
if (mInnerView) {
nsIViewManager* vm = mInnerView->GetViewManager();
vm->MoveViewTo(mInnerView, offset.x, offset.y);
vm->ResizeView(mInnerView, nsRect(nsPoint(0, 0), innerSize), PR_TRUE);
}
// Determine if we need to repaint our border, background or outline
CheckInvalidateSizeChange(aDesiredSize);
FinishAndStoreOverflow(&aDesiredSize);
// Invalidate the frame contents
// XXX is this really needed?
nsRect rect(nsPoint(0, 0), GetSize());
Invalidate(rect);
if (!aPresContext->IsPaginated() && !mPostedReflowCallback) {
PresContext()->PresShell()->PostReflowCallback(this);
mPostedReflowCallback = PR_TRUE;
}
// printf("OuterFrame::Reflow DONE %X (%d,%d)\n", this,
// aDesiredSize.width, aDesiredSize.height);
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%x",
aDesiredSize.width, aDesiredSize.height, aStatus));
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return NS_OK;
}
PRBool
nsSubDocumentFrame::ReflowFinished()
{
nsCOMPtr<nsIDocShell> docShell;
GetDocShell(getter_AddRefs(docShell));
nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(docShell));
// resize the sub document
if (baseWindow) {
PRInt32 x = 0;
PRInt32 y = 0;
nsWeakFrame weakFrame(this);
nsPresContext* presContext = PresContext();
baseWindow->GetPositionAndSize(&x, &y, nsnull, nsnull);
if (!weakFrame.IsAlive()) {
// GetPositionAndSize() killed us
return PR_FALSE;
}
// GetPositionAndSize might have resized us. So now is the time to
// get our size.
mPostedReflowCallback = PR_FALSE;
nsSize innerSize(GetSize());
if (IsInline()) {
nsMargin usedBorderPadding = GetUsedBorderAndPadding();
// Sadly, XUL smacks the frame size without changing the used
// border and padding, so we can't trust those. Subtracting
// them might make things negative.
innerSize.width -= usedBorderPadding.LeftRight();
innerSize.width = PR_MAX(innerSize.width, 0);
innerSize.height -= usedBorderPadding.TopBottom();
innerSize.height = PR_MAX(innerSize.height, 0);
}
PRInt32 cx = presContext->AppUnitsToDevPixels(innerSize.width);
PRInt32 cy = presContext->AppUnitsToDevPixels(innerSize.height);
baseWindow->SetPositionAndSize(x, y, cx, cy, PR_FALSE);
} else {
// Make sure that we can post a reflow callback in the future.
mPostedReflowCallback = PR_FALSE;
}
return PR_FALSE;
}
void
nsSubDocumentFrame::ReflowCallbackCanceled()
{
mPostedReflowCallback = PR_FALSE;
}
NS_IMETHODIMP
nsSubDocumentFrame::VerifyTree() const
{
// XXX Completely disabled for now; once pseud-frames are reworked
// then we can turn it back on.
return NS_OK;
}
NS_IMETHODIMP
nsSubDocumentFrame::AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
if (aNameSpaceID != kNameSpaceID_None) {
return NS_OK;
}
// If the noResize attribute changes, dis/allow frame to be resized
if (aAttribute == nsGkAtoms::noresize) {
// Note that we're not doing content type checks, but that's ok -- if
// they'd fail we will just end up with a null framesetFrame.
if (mContent->GetParent()->Tag() == nsGkAtoms::frameset) {
nsIFrame* parentFrame = GetParent();
if (parentFrame) {
// There is no interface for nsHTMLFramesetFrame so QI'ing to
// concrete class, yay!
nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(parentFrame);
if (framesetFrame) {
framesetFrame->RecalculateBorderResize();
}
}
}
}
else if (aAttribute == nsGkAtoms::type) {
if (!mFrameLoader)
return NS_OK;
if (!mContent->IsNodeOfType(nsINode::eXUL)) {
return NS_OK;
}
// Note: This logic duplicates a lot of logic in
// nsFrameLoader::EnsureDocShell. We should fix that.
// Notify our enclosing chrome that our type has changed. We only do this
// if our parent is chrome, since in all other cases we're random content
// subframes and the treeowner shouldn't worry about us.
nsCOMPtr<nsIDocShell> docShell;
mFrameLoader->GetDocShell(getter_AddRefs(docShell));
nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(docShell));
if (!docShellAsItem) {
return NS_OK;
}
nsCOMPtr<nsIDocShellTreeItem> parentItem;
docShellAsItem->GetParent(getter_AddRefs(parentItem));
PRInt32 parentType;
parentItem->GetItemType(&parentType);
if (parentType != nsIDocShellTreeItem::typeChrome) {
return NS_OK;
}
nsCOMPtr<nsIDocShellTreeOwner> parentTreeOwner;
parentItem->GetTreeOwner(getter_AddRefs(parentTreeOwner));
if (parentTreeOwner) {
nsAutoString value;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::type, value);
PRBool is_primary = value.LowerCaseEqualsLiteral("content-primary");
#ifdef MOZ_XUL
// when a content panel is no longer primary, hide any open popups it may have
if (!is_primary) {
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (pm)
pm->HidePopupsInDocShell(docShellAsItem);
}
#endif
parentTreeOwner->ContentShellRemoved(docShellAsItem);
if (value.LowerCaseEqualsLiteral("content") ||
StringBeginsWith(value, NS_LITERAL_STRING("content-"),
nsCaseInsensitiveStringComparator())) {
PRBool is_targetable = is_primary ||
value.LowerCaseEqualsLiteral("content-targetable");
parentTreeOwner->ContentShellAdded(docShellAsItem, is_primary,
is_targetable, value);
}
}
}
return NS_OK;
}
nsIFrame*
NS_NewSubDocumentFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsSubDocumentFrame(aContext);
}
void
nsSubDocumentFrame::Destroy()
{
if (mPostedReflowCallback) {
PresContext()->PresShell()->CancelReflowCallback(this);
mPostedReflowCallback = PR_FALSE;
}
HideViewer();
nsLeafFrame::Destroy();
}
void
nsSubDocumentFrame::HideViewer()
{
if (mFrameLoader && mDidCreateDoc) {
// Get the content viewer through the docshell, but don't call
// GetDocShell() since we don't want to create one if we don't
// have one.
nsCOMPtr<nsIDocShell> docShell;
mFrameLoader->GetDocShell(getter_AddRefs(docShell));
if (docShell) {
nsCOMPtr<nsIContentViewer> content_viewer;
docShell->GetContentViewer(getter_AddRefs(content_viewer));
if (content_viewer) {
// Mark the content viewer as non-sticky so that the presentation
// can safely go away when this frame is destroyed.
content_viewer->SetSticky(PR_FALSE);
}
nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(docShell);
NS_ASSERTION(baseWin, "Docshell must be an nsIBaseWindow");
// Now reverse the steps we took in ShowDocShell(). But don't call
// Destroy(); that will be handled by destroying our frame loader, if
// needed.
// Hide the content viewer now that the frame is going away...
baseWin->SetVisibility(PR_FALSE);
// Clear out the parentWidget, since it might be about to die with us
baseWin->SetParentWidget(nsnull);
}
}
}
nsIntSize nsSubDocumentFrame::GetMargin()
{
nsIntSize result(-1, -1);
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::marginwidth);
if (attr && attr->Type() == nsAttrValue::eInteger)
result.width = attr->GetIntegerValue();
attr = content->GetParsedAttr(nsGkAtoms::marginheight);
if (attr && attr->Type() == nsAttrValue::eInteger)
result.height = attr->GetIntegerValue();
}
return result;
}
// XXX this should be called ObtainDocShell or something like that,
// to indicate that it could have side effects
NS_IMETHODIMP
nsSubDocumentFrame::GetDocShell(nsIDocShell **aDocShell)
{
*aDocShell = nsnull;
nsIContent* content = GetContent();
if (!content) {
// Hmm, no content in this frame
// that's odd, not much to be done here then.
return NS_OK;
}
if (!mFrameLoader) {
nsCOMPtr<nsIFrameLoaderOwner> loaderOwner = do_QueryInterface(content);
if (loaderOwner) {
loaderOwner->GetFrameLoader(getter_AddRefs(mFrameLoader));
}
NS_ENSURE_STATE(mFrameLoader);
}
return mFrameLoader->GetDocShell(aDocShell);
}
NS_IMETHODIMP
nsSubDocumentFrame::BeginSwapDocShells(nsIFrame* aOther)
{
if (!aOther || aOther->GetType() != nsGkAtoms::subDocumentFrame) {
return NS_ERROR_NOT_IMPLEMENTED;
}
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
if (!mFrameLoader || !mDidCreateDoc || !other->mFrameLoader ||
!other->mDidCreateDoc) {
return NS_ERROR_NOT_IMPLEMENTED;
}
HideViewer();
other->HideViewer();
mFrameLoader.swap(other->mFrameLoader);
return NS_OK;
}
void
nsSubDocumentFrame::EndSwapDocShells(nsIFrame* aOther)
{
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
ShowViewer();
other->ShowViewer();
// Now make sure we reflow both frames, in case their contents
// determine their size.
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
other->PresContext()->PresShell()->
FrameNeedsReflow(other, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
// And repaint them, for good measure, in case there's nothing
// interesting that happens during reflow.
InvalidateOverflowRect();
other->InvalidateOverflowRect();
}
inline PRInt32 ConvertOverflow(PRUint8 aOverflow)
{
switch (aOverflow) {
case NS_STYLE_OVERFLOW_VISIBLE:
case NS_STYLE_OVERFLOW_AUTO:
return nsIScrollable::Scrollbar_Auto;
case NS_STYLE_OVERFLOW_HIDDEN:
case NS_STYLE_OVERFLOW_CLIP:
return nsIScrollable::Scrollbar_Never;
case NS_STYLE_OVERFLOW_SCROLL:
return nsIScrollable::Scrollbar_Always;
}
NS_NOTREACHED("invalid overflow value passed to ConvertOverflow");
return nsIScrollable::Scrollbar_Auto;
}
nsresult
nsSubDocumentFrame::ShowDocShell()
{
nsCOMPtr<nsIDocShell> docShell;
nsresult rv = GetDocShell(getter_AddRefs(docShell));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
if (presShell) {
// The docshell is already showing, nothing left to do...
NS_ASSERTION(mInnerView, "What's going on?");
return NS_OK;
}
// pass along marginwidth, marginheight, scrolling so sub document
// can use it
nsIntSize margin = GetMargin();
docShell->SetMarginWidth(margin.width);
docShell->SetMarginHeight(margin.height);
// Current and initial scrolling is set so that all succeeding docs
// will use the scrolling value set here, regardless if scrolling is
// set by viewing a particular document (e.g. XUL turns off scrolling)
nsCOMPtr<nsIScrollable> sc(do_QueryInterface(docShell));
if (sc) {
const nsStyleDisplay *disp = GetStyleDisplay();
sc->SetDefaultScrollbarPreferences(nsIScrollable::ScrollOrientation_X,
ConvertOverflow(disp->mOverflowX));
sc->SetDefaultScrollbarPreferences(nsIScrollable::ScrollOrientation_Y,
ConvertOverflow(disp->mOverflowY));
}
PRInt32 itemType = nsIDocShellTreeItem::typeContent;
nsCOMPtr<nsIDocShellTreeItem> treeItem(do_QueryInterface(docShell));
if (treeItem) {
treeItem->GetItemType(&itemType);
}
nsContentType contentType;
if (itemType == nsIDocShellTreeItem::typeChrome) {
contentType = eContentTypeUI;
}
else {
nsCOMPtr<nsIDocShellTreeItem> sameTypeParent;
treeItem->GetSameTypeParent(getter_AddRefs(sameTypeParent));
contentType = sameTypeParent ? eContentTypeContentFrame : eContentTypeContent;
}
rv = CreateViewAndWidget(contentType);
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(docShell));
if (baseWindow) {
baseWindow->InitWindow(nsnull, mInnerView->GetWidget(), 0, 0, 10, 10);
// This is kinda whacky, this "Create()" call doesn't really
// create anything, one starts to wonder why this was named
// "Create"...
baseWindow->Create();
baseWindow->SetVisibility(PR_TRUE);
}
// Trigger editor re-initialization if midas is turned on in the
// sub-document. This shouldn't be necessary, but given the way our
// editor works, it is. See
// https://bugzilla.mozilla.org/show_bug.cgi?id=284245
docShell->GetPresShell(getter_AddRefs(presShell));
if (presShell) {
nsCOMPtr<nsIDOMNSHTMLDocument> doc =
do_QueryInterface(presShell->GetDocument());
if (doc) {
nsAutoString designMode;
doc->GetDesignMode(designMode);
if (designMode.EqualsLiteral("on")) {
doc->SetDesignMode(NS_LITERAL_STRING("off"));
doc->SetDesignMode(NS_LITERAL_STRING("on"));
}
}
}
return NS_OK;
}
nsresult
nsSubDocumentFrame::CreateViewAndWidget(nsContentType aContentType)
{
if (mInnerView) {
// Nothing to do here
return NS_OK;
}
// create, init, set the parent of the view
nsIView* outerView = GetView();
NS_ASSERTION(outerView, "Must have an outer view already");
nsRect viewBounds(0, 0, 0, 0); // size will be fixed during reflow
nsIViewManager* viewMan = outerView->GetViewManager();
// Create the inner view hidden if the outer view is already hidden
// (it won't get hidden properly otherwise)
nsIView* innerView = viewMan->CreateView(viewBounds, outerView,
outerView->GetVisibility());
if (!innerView) {
NS_ERROR("Could not create inner view");
return NS_ERROR_OUT_OF_MEMORY;
}
mInnerView = innerView;
viewMan->InsertChild(outerView, innerView, nsnull, PR_TRUE);
return innerView->CreateWidget(kCChildCID, nsnull, nsnull, PR_TRUE, PR_TRUE,
aContentType);
}
nsIFrame*
nsSubDocumentFrame::ObtainIntrinsicSizeFrame()
{
nsCOMPtr<nsIObjectLoadingContent> olc = do_QueryInterface(GetContent());
if (olc) {
// We are an HTML <object>, <embed> or <applet> (a replaced element).
// Try to get an nsIFrame for our sub-document's document element
nsIFrame* subDocRoot = nsnull;
nsCOMPtr<nsIDocShell> docShell;
GetDocShell(getter_AddRefs(docShell));
if (docShell) {
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
if (presShell) {
nsIScrollableFrame* scrollable = presShell->GetRootScrollFrameAsScrollable();
if (scrollable) {
nsIFrame* scrolled = scrollable->GetScrolledFrame();
if (scrolled) {
subDocRoot = scrolled->GetFirstChild(nsnull);
}
}
}
}
#ifdef MOZ_SVG
if (subDocRoot && subDocRoot->GetContent() &&
subDocRoot->GetContent()->NodeInfo()->Equals(nsGkAtoms::svg, kNameSpaceID_SVG)) {
return subDocRoot; // SVG documents have an intrinsic size
}
#endif
}
return nsnull;
}
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