layout/xul/nsDocElementBoxFrame.cpp@ac0c01689b40 (annotated)
layout/xul/nsDocElementBoxFrame.cpp
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | #include "nsHTMLParts.h" |
| michael@0 | 6 | #include "nsContainerFrame.h" |
| michael@0 | 7 | #include "nsCSSRendering.h" |
| michael@0 | 8 | #include "nsIDocument.h" |
| michael@0 | 9 | #include "nsPageFrame.h" |
| michael@0 | 10 | #include "nsIDOMEvent.h" |
| michael@0 | 11 | #include "nsStyleConsts.h" |
| michael@0 | 12 | #include "nsGkAtoms.h" |
| michael@0 | 13 | #include "nsIPresShell.h" |
| michael@0 | 14 | #include "nsBoxFrame.h" |
| michael@0 | 15 | #include "nsStackLayout.h" |
| michael@0 | 16 | #include "nsIAnonymousContentCreator.h" |
| michael@0 | 17 | #include "nsINodeInfo.h" |
| michael@0 | 18 | #include "nsIServiceManager.h" |
| michael@0 | 19 | #include "nsNodeInfoManager.h" |
| michael@0 | 20 | #include "nsContentCreatorFunctions.h" |
| michael@0 | 21 | #include "nsContentUtils.h" |
| michael@0 | 22 | #include "nsContentList.h" |
| michael@0 | 23 | #include "mozilla/dom/Element.h" |
| michael@0 | 24 | |
| michael@0 | 25 | //#define DEBUG_REFLOW |
| michael@0 | 26 | |
| michael@0 | 27 | using namespace mozilla::dom; |
| michael@0 | 28 | |
| michael@0 | 29 | class nsDocElementBoxFrame : public nsBoxFrame, |
| michael@0 | 30 | public nsIAnonymousContentCreator |
| michael@0 | 31 | { |
| michael@0 | 32 | public: |
| michael@0 | 33 | virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE; |
| michael@0 | 34 | |
| michael@0 | 35 | friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell, |
| michael@0 | 36 | nsStyleContext* aContext); |
| michael@0 | 37 | |
| michael@0 | 38 | nsDocElementBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext) |
| michael@0 | 39 | :nsBoxFrame(aShell, aContext, true) {} |
| michael@0 | 40 | |
| michael@0 | 41 | NS_DECL_QUERYFRAME |
| michael@0 | 42 | NS_DECL_FRAMEARENA_HELPERS |
| michael@0 | 43 | |
| michael@0 | 44 | // nsIAnonymousContentCreator |
| michael@0 | 45 | virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE; |
| michael@0 | 46 | virtual void AppendAnonymousContentTo(nsBaseContentList& aElements, |
| michael@0 | 47 | uint32_t aFilter) MOZ_OVERRIDE; |
| michael@0 | 48 | |
| michael@0 | 49 | virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE |
| michael@0 | 50 | { |
| michael@0 | 51 | // Override nsBoxFrame. |
| michael@0 | 52 | if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced)) |
| michael@0 | 53 | return false; |
| michael@0 | 54 | return nsBoxFrame::IsFrameOfType(aFlags); |
| michael@0 | 55 | } |
| michael@0 | 56 | |
| michael@0 | 57 | #ifdef DEBUG_FRAME_DUMP |
| michael@0 | 58 | virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE; |
| michael@0 | 59 | #endif |
| michael@0 | 60 | private: |
| michael@0 | 61 | nsCOMPtr<Element> mPopupgroupContent; |
| michael@0 | 62 | nsCOMPtr<Element> mTooltipContent; |
| michael@0 | 63 | }; |
| michael@0 | 64 | |
| michael@0 | 65 | //---------------------------------------------------------------------- |
| michael@0 | 66 | |
| michael@0 | 67 | nsIFrame* |
| michael@0 | 68 | NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) |
| michael@0 | 69 | { |
| michael@0 | 70 | return new (aPresShell) nsDocElementBoxFrame (aPresShell, aContext); |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | NS_IMPL_FRAMEARENA_HELPERS(nsDocElementBoxFrame) |
| michael@0 | 74 | |
| michael@0 | 75 | void |
| michael@0 | 76 | nsDocElementBoxFrame::DestroyFrom(nsIFrame* aDestructRoot) |
| michael@0 | 77 | { |
| michael@0 | 78 | nsContentUtils::DestroyAnonymousContent(&mPopupgroupContent); |
| michael@0 | 79 | nsContentUtils::DestroyAnonymousContent(&mTooltipContent); |
| michael@0 | 80 | nsBoxFrame::DestroyFrom(aDestructRoot); |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | nsresult |
| michael@0 | 84 | nsDocElementBoxFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements) |
| michael@0 | 85 | { |
| michael@0 | 86 | nsIDocument* doc = mContent->GetDocument(); |
| michael@0 | 87 | if (!doc) { |
| michael@0 | 88 | // The page is currently being torn down. Why bother. |
| michael@0 | 89 | return NS_ERROR_FAILURE; |
| michael@0 | 90 | } |
| michael@0 | 91 | nsNodeInfoManager *nodeInfoManager = doc->NodeInfoManager(); |
| michael@0 | 92 | |
| michael@0 | 93 | // create the top-secret popupgroup node. shhhhh! |
| michael@0 | 94 | nsCOMPtr<nsINodeInfo> nodeInfo; |
| michael@0 | 95 | nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::popupgroup, |
| michael@0 | 96 | nullptr, kNameSpaceID_XUL, |
| michael@0 | 97 | nsIDOMNode::ELEMENT_NODE); |
| michael@0 | 98 | NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY); |
| michael@0 | 99 | |
| michael@0 | 100 | nsresult rv = NS_NewXULElement(getter_AddRefs(mPopupgroupContent), |
| michael@0 | 101 | nodeInfo.forget()); |
| michael@0 | 102 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 103 | |
| michael@0 | 104 | if (!aElements.AppendElement(mPopupgroupContent)) |
| michael@0 | 105 | return NS_ERROR_OUT_OF_MEMORY; |
| michael@0 | 106 | |
| michael@0 | 107 | // create the top-secret default tooltip node. shhhhh! |
| michael@0 | 108 | nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::tooltip, nullptr, |
| michael@0 | 109 | kNameSpaceID_XUL, |
| michael@0 | 110 | nsIDOMNode::ELEMENT_NODE); |
| michael@0 | 111 | NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY); |
| michael@0 | 112 | |
| michael@0 | 113 | rv = NS_NewXULElement(getter_AddRefs(mTooltipContent), nodeInfo.forget()); |
| michael@0 | 114 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 115 | |
| michael@0 | 116 | mTooltipContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_default, |
| michael@0 | 117 | NS_LITERAL_STRING("true"), false); |
| michael@0 | 118 | |
| michael@0 | 119 | if (!aElements.AppendElement(mTooltipContent)) |
| michael@0 | 120 | return NS_ERROR_OUT_OF_MEMORY; |
| michael@0 | 121 | |
| michael@0 | 122 | return NS_OK; |
| michael@0 | 123 | } |
| michael@0 | 124 | |
| michael@0 | 125 | void |
| michael@0 | 126 | nsDocElementBoxFrame::AppendAnonymousContentTo(nsBaseContentList& aElements, |
| michael@0 | 127 | uint32_t aFilter) |
| michael@0 | 128 | { |
| michael@0 | 129 | aElements.MaybeAppendElement(mPopupgroupContent); |
| michael@0 | 130 | aElements.MaybeAppendElement(mTooltipContent); |
| michael@0 | 131 | } |
| michael@0 | 132 | |
| michael@0 | 133 | NS_QUERYFRAME_HEAD(nsDocElementBoxFrame) |
| michael@0 | 134 | NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator) |
| michael@0 | 135 | NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame) |
| michael@0 | 136 | |
| michael@0 | 137 | #ifdef DEBUG_FRAME_DUMP |
| michael@0 | 138 | nsresult |
| michael@0 | 139 | nsDocElementBoxFrame::GetFrameName(nsAString& aResult) const |
| michael@0 | 140 | { |
| michael@0 | 141 | return MakeFrameName(NS_LITERAL_STRING("DocElementBox"), aResult); |
| michael@0 | 142 | } |
| michael@0 | 143 | #endif |
