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fune/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>
* Håkan 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 ***** */
#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 "nsHTMLAtoms.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 "nsLayoutAtoms.h"
#include "nsIScriptSecurityManager.h"
#include "nsXPIDLString.h"
#include "nsIScrollable.h"
#include "nsINameSpaceManager.h"
#include "nsIWidget.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"
#ifdef NS_PRINTING
#include "nsIWebBrowserPrint.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:
nsSubDocumentFrame();
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
// nsISupports
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
NS_IMETHOD_(nsrefcnt) AddRef(void) { return 2; }
NS_IMETHOD_(nsrefcnt) Release(void) { return 1; }
virtual nsIAtom* GetType() const;
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsStyleContext* aContext,
nsIFrame* aPrevInFlow);
NS_IMETHOD Destroy(nsPresContext* aPresContext);
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 VerifyTree() const;
protected:
nsSize GetMargin();
PRBool IsInline() { return mIsInline; }
nsresult ShowDocShell();
nsresult CreateViewAndWidget(nsContentType aContentType);
virtual void GetDesiredSize(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize);
virtual PRIntn GetSkipSides() const;
nsCOMPtr<nsIFrameLoader> mFrameLoader;
nsIView* mInnerView;
PRPackedBool mDidCreateDoc;
PRPackedBool mOwnsFrameLoader;
PRPackedBool mIsInline;
};
nsSubDocumentFrame::nsSubDocumentFrame()
: nsLeafFrame(), mDidCreateDoc(PR_FALSE), mOwnsFrameLoader(PR_FALSE),
mIsInline(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
//--------------------------------------------------------------
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsSubDocumentFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsIFrameFrame))) {
nsISupports *tmp = NS_STATIC_CAST(nsIFrameFrame *, this);
*aInstancePtr = tmp;
return NS_OK;
}
return nsLeafFrame::QueryInterface(aIID, aInstancePtr);
}
NS_IMETHODIMP
nsSubDocumentFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsStyleContext* aContext,
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, aContext, aPrevInFlow);
if (NS_FAILED(rv))
return rv;
nsPresContext *aPresContext = GetPresContext();
// 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()) {
// To properly initialize the view we need to know the frame for the content
// that is the parent of content for this frame. This might not be our actual
// frame parent if we are out of flow (e.g., positioned) so our parent frame
// may have been set to some other ancestor.
// We look for a content parent frame in the frame property list, where it
// will have been set by nsCSSFrameConstructor if necessary.
nsCOMPtr<nsIAtom> contentParentAtom = do_GetAtom("contentParent");
nsIFrame* contentParent = nsnull;
void *value =
aPresContext->PropertyTable()->UnsetProperty(this,
contentParentAtom, &rv);
if (NS_SUCCEEDED(rv)) {
contentParent = (nsIFrame*)value;
}
nsHTMLContainerFrame::CreateViewForFrame(this, contentParent, PR_TRUE);
}
nsIView* view = GetView();
NS_ASSERTION(view, "We should always have a view now");
if (aParent->GetStyleDisplay()->mDisplay == NS_STYLE_DISPLAY_DECK
&& !view->HasWidget()) {
view->CreateWidget(kCChildCID);
}
// determine if we are a printcontext
PRBool shouldCreateDoc;
if (aPresContext->Medium() == nsLayoutAtoms::print) {
if (aPresContext->Type() == nsPresContext::eContext_PrintPreview) {
// for print preview we want to create the view and widget but
// we do not want to load the document, it is already loaded.
rv = CreateViewAndWidget(eContentTypeContent);
NS_ENSURE_SUCCESS(rv,rv);
}
shouldCreateDoc = PR_FALSE;
} else {
shouldCreateDoc = PR_TRUE;
}
if (shouldCreateDoc) {
rv = ShowDocShell();
NS_ENSURE_SUCCESS(rv,rv);
mDidCreateDoc = PR_TRUE;
}
return NS_OK;
}
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 = NS_STATIC_CAST(nsIFrame*, subdocView->GetClientData());
if (!f)
return NS_OK;
nsRect dirty = aDirtyRect - f->GetOffsetTo(this);
return f->BuildDisplayListForStackingContext(aBuilder, dirty, aLists.Content());
}
void
nsSubDocumentFrame::GetDesiredSize(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize)
{
// <frame> processing does not use this routine, only <iframe>
float p2t = 0;
if (!mContent->IsContentOfType(nsIContent::eXUL))
// If no width/height was specified, use 300/150.
// This is for compatibility with IE.
p2t = aPresContext->ScaledPixelsToTwips();
if (NS_UNCONSTRAINEDSIZE != aReflowState.mComputedWidth) {
aDesiredSize.width = aReflowState.mComputedWidth;
}
else {
aDesiredSize.width = PR_MAX(PR_MIN(NSIntPixelsToTwips(300, p2t),
aReflowState.mComputedMaxWidth),
aReflowState.mComputedMinWidth);
}
if (NS_UNCONSTRAINEDSIZE != aReflowState.mComputedHeight) {
aDesiredSize.height = aReflowState.mComputedHeight;
}
else {
aDesiredSize.height = PR_MAX(PR_MIN(NSIntPixelsToTwips(150, p2t),
aReflowState.mComputedMaxHeight),
aReflowState.mComputedMinHeight);
}
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
}
#ifdef DEBUG
NS_IMETHODIMP nsSubDocumentFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("FrameOuter"), aResult);
}
#endif
nsIAtom*
nsSubDocumentFrame::GetType() const
{
return nsLayoutAtoms::subDocumentFrame;
}
NS_IMETHODIMP
nsSubDocumentFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsSubDocumentFrame", aReflowState.reason);
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 reason=%d",
aReflowState.availableWidth, aReflowState.availableHeight, aReflowState.reason));
aStatus = NS_FRAME_COMPLETE;
if (IsInline()) {
GetDesiredSize(aPresContext, aReflowState, aDesiredSize); // IFRAME
} else {
aDesiredSize.width = aReflowState.availableWidth; // FRAME
aDesiredSize.height = aReflowState.availableHeight;
}
nsSize innerSize(aDesiredSize.width, aDesiredSize.height);
nsPoint offset(0, 0);
nsMargin border = aReflowState.mComputedBorderPadding;
if (IsInline()) {
offset = nsPoint(border.left, border.top);
aDesiredSize.width += border.left + border.right;
aDesiredSize.height += border.top + border.bottom;
}
// might not have an inner view yet during printing
if (mInnerView) {
nsIViewManager* vm = mInnerView->GetViewManager();
vm->MoveViewTo(mInnerView, offset.x, offset.y);
vm->ResizeView(mInnerView, nsRect(0, 0, innerSize.width, innerSize.height), PR_TRUE);
}
if (aDesiredSize.mComputeMEW) {
nscoord defaultAutoWidth = NSIntPixelsToTwips(300, aPresContext->ScaledPixelsToTwips());
if (mContent->IsContentOfType(nsIContent::eXUL)) {
// XUL frames don't have a default 300px width
defaultAutoWidth = 0;
}
nsStyleUnit widthUnit = GetStylePosition()->mWidth.GetUnit();
switch (widthUnit) {
case eStyleUnit_Percent:
// if our width is percentage, then we can shrink until
// there's nothing left but our borders
aDesiredSize.mMaxElementWidth = border.left + border.right;
break;
case eStyleUnit_Auto:
aDesiredSize.mMaxElementWidth = PR_MAX(PR_MIN(defaultAutoWidth,
aReflowState.mComputedMaxWidth),
aReflowState.mComputedMinWidth) +
border.left + border.right;
break;
default:
// If our width is set by style to some fixed length,
// then our actual width is our minimum width
aDesiredSize.mMaxElementWidth = aDesiredSize.width;
break;
}
}
// Determine if we need to repaint our border, background or outline
CheckInvalidateSizeChange(aPresContext, aDesiredSize, aReflowState);
// Invalidate the frame contents
nsRect rect(nsPoint(0, 0), GetSize());
Invalidate(rect, PR_FALSE);
if (!aPresContext->IsPaginated()) {
nsCOMPtr<nsIDocShell> docShell;
GetDocShell(getter_AddRefs(docShell));
nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(docShell));
// resize the sub document
if (baseWindow) {
float t2p;
t2p = aPresContext->TwipsToPixels();
PRInt32 x = 0;
PRInt32 y = 0;
baseWindow->GetPositionAndSize(&x, &y, nsnull, nsnull);
PRInt32 cx = NSToCoordRound(innerSize.width * t2p);
PRInt32 cy = NSToCoordRound(innerSize.height * t2p);
baseWindow->SetPositionAndSize(x, y, cx, cy, PR_FALSE);
}
}
// printf("OuterFrame::Reflow DONE %X (%d,%d), MEW=%d(%d)\n", this,
// aDesiredSize.width, aDesiredSize.height, aDesiredSize.mMaxElementWidth,
// aDesiredSize.mComputeMEW);
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;
}
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 (aAttribute == nsHTMLAtoms::src) {
if (mOwnsFrameLoader && mFrameLoader) {
mFrameLoader->LoadFrame();
}
}
// If the noResize attribute changes, dis/allow frame to be resized
else if (aAttribute == nsHTMLAtoms::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() == nsHTMLAtoms::frameset) {
nsIFrame* parentFrame = GetParent();
if (parentFrame) {
// There is no interface for nsHTMLFramesetFrame so QI'ing to
// concrete class, yay!
nsHTMLFramesetFrame* framesetFrame = nsnull;
parentFrame->QueryInterface(NS_GET_IID(nsHTMLFramesetFrame),
(void **)&framesetFrame);
if (framesetFrame) {
framesetFrame->RecalculateBorderResize();
}
}
}
}
else if (aAttribute == nsHTMLAtoms::type) {
if (!mFrameLoader)
return NS_OK;
if (!mContent->IsContentOfType(nsIContent::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, nsHTMLAtoms::type, value);
PRBool is_primary = value.LowerCaseEqualsLiteral("content-primary");
nsCOMPtr<nsIDocShellTreeOwner_MOZILLA_1_8_BRANCH> owner2 =
do_QueryInterface(parentTreeOwner);
if (!owner2) {
// XXXbz this adds stuff even if it's not of type content-*, but not
// much we can do about that....
parentTreeOwner->ContentShellAdded(docShellAsItem, is_primary,
value.get());
} else {
owner2->ContentShellRemoved(docShellAsItem);
if (value.LowerCaseEqualsLiteral("content") ||
StringBeginsWith(value, NS_LITERAL_STRING("content-"),
nsCaseInsensitiveStringComparator())) {
PRBool is_targetable = is_primary ||
value.LowerCaseEqualsLiteral("content-targetable");
owner2->ContentShellAdded2(docShellAsItem, is_primary, is_targetable,
value);
}
}
}
}
return NS_OK;
}
nsIFrame*
NS_NewSubDocumentFrame(nsIPresShell* aPresShell)
{
return new (aPresShell) nsSubDocumentFrame;
}
NS_IMETHODIMP
nsSubDocumentFrame::Destroy(nsPresContext* aPresContext)
{
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's about to die with us
baseWin->SetParentWidget(nsnull);
}
}
if (mFrameLoader && mOwnsFrameLoader) {
// We own this frame loader, and we're going away, so destroy our
// frame loader.
mFrameLoader->Destroy();
}
return nsLeafFrame::Destroy(aPresContext);
}
nsSize nsSubDocumentFrame::GetMargin()
{
nsSize result(-1, -1);
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsHTMLAtoms::marginwidth);
if (attr && attr->Type() == nsAttrValue::eInteger)
result.width = attr->GetIntegerValue();
attr = content->GetParsedAttr(nsHTMLAtoms::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));
}
if (!mFrameLoader) {
// No frame loader available from the content, create our own...
mFrameLoader = new nsFrameLoader(content);
if (!mFrameLoader)
return NS_ERROR_OUT_OF_MEMORY;
// ... remember that we own this frame loader...
mOwnsFrameLoader = PR_TRUE;
// ... and tell it to start loading.
// the failure to load a URL does not constitute failure to
// create/initialize the docshell and therefore the LoadFrame()
// call's return value should not be propagated.
mFrameLoader->LoadFrame();
}
}
return mFrameLoader->GetDocShell(aDocShell);
}
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...
return NS_OK;
}
// pass along marginwidth, marginheight, scrolling so sub document
// can use it
nsSize 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)
{
// 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);
}
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