layout/xul/nsPopupSetFrame.cpp@ac0c01689b40 (annotated)
layout/xul/nsPopupSetFrame.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 | |
| michael@0 | 6 | #include "nsPopupSetFrame.h" |
| michael@0 | 7 | #include "nsGkAtoms.h" |
| michael@0 | 8 | #include "nsCOMPtr.h" |
| michael@0 | 9 | #include "nsIContent.h" |
| michael@0 | 10 | #include "nsPresContext.h" |
| michael@0 | 11 | #include "nsStyleContext.h" |
| michael@0 | 12 | #include "nsBoxLayoutState.h" |
| michael@0 | 13 | #include "nsIScrollableFrame.h" |
| michael@0 | 14 | #include "nsIRootBox.h" |
| michael@0 | 15 | #include "nsMenuPopupFrame.h" |
| michael@0 | 16 | |
| michael@0 | 17 | nsIFrame* |
| michael@0 | 18 | NS_NewPopupSetFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) |
| michael@0 | 19 | { |
| michael@0 | 20 | return new (aPresShell) nsPopupSetFrame (aPresShell, aContext); |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | NS_IMPL_FRAMEARENA_HELPERS(nsPopupSetFrame) |
| michael@0 | 24 | |
| michael@0 | 25 | void |
| michael@0 | 26 | nsPopupSetFrame::Init(nsIContent* aContent, |
| michael@0 | 27 | nsIFrame* aParent, |
| michael@0 | 28 | nsIFrame* aPrevInFlow) |
| michael@0 | 29 | { |
| michael@0 | 30 | nsBoxFrame::Init(aContent, aParent, aPrevInFlow); |
| michael@0 | 31 | |
| michael@0 | 32 | // Normally the root box is our grandparent, but in case of wrapping |
| michael@0 | 33 | // it can be our great-grandparent. |
| michael@0 | 34 | nsIRootBox *rootBox = nsIRootBox::GetRootBox(PresContext()->GetPresShell()); |
| michael@0 | 35 | if (rootBox) { |
| michael@0 | 36 | rootBox->SetPopupSetFrame(this); |
| michael@0 | 37 | } |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | nsIAtom* |
| michael@0 | 41 | nsPopupSetFrame::GetType() const |
| michael@0 | 42 | { |
| michael@0 | 43 | return nsGkAtoms::popupSetFrame; |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | nsresult |
| michael@0 | 47 | nsPopupSetFrame::AppendFrames(ChildListID aListID, |
| michael@0 | 48 | nsFrameList& aFrameList) |
| michael@0 | 49 | { |
| michael@0 | 50 | if (aListID == kPopupList) { |
| michael@0 | 51 | AddPopupFrameList(aFrameList); |
| michael@0 | 52 | return NS_OK; |
| michael@0 | 53 | } |
| michael@0 | 54 | return nsBoxFrame::AppendFrames(aListID, aFrameList); |
| michael@0 | 55 | } |
| michael@0 | 56 | |
| michael@0 | 57 | nsresult |
| michael@0 | 58 | nsPopupSetFrame::RemoveFrame(ChildListID aListID, |
| michael@0 | 59 | nsIFrame* aOldFrame) |
| michael@0 | 60 | { |
| michael@0 | 61 | if (aListID == kPopupList) { |
| michael@0 | 62 | RemovePopupFrame(aOldFrame); |
| michael@0 | 63 | return NS_OK; |
| michael@0 | 64 | } |
| michael@0 | 65 | return nsBoxFrame::RemoveFrame(aListID, aOldFrame); |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | nsresult |
| michael@0 | 69 | nsPopupSetFrame::InsertFrames(ChildListID aListID, |
| michael@0 | 70 | nsIFrame* aPrevFrame, |
| michael@0 | 71 | nsFrameList& aFrameList) |
| michael@0 | 72 | { |
| michael@0 | 73 | if (aListID == kPopupList) { |
| michael@0 | 74 | AddPopupFrameList(aFrameList); |
| michael@0 | 75 | return NS_OK; |
| michael@0 | 76 | } |
| michael@0 | 77 | return nsBoxFrame::InsertFrames(aListID, aPrevFrame, aFrameList); |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | nsresult |
| michael@0 | 81 | nsPopupSetFrame::SetInitialChildList(ChildListID aListID, |
| michael@0 | 82 | nsFrameList& aChildList) |
| michael@0 | 83 | { |
| michael@0 | 84 | if (aListID == kPopupList) { |
| michael@0 | 85 | NS_ASSERTION(mPopupList.IsEmpty(), |
| michael@0 | 86 | "SetInitialChildList on non-empty child list"); |
| michael@0 | 87 | AddPopupFrameList(aChildList); |
| michael@0 | 88 | return NS_OK; |
| michael@0 | 89 | } |
| michael@0 | 90 | return nsBoxFrame::SetInitialChildList(aListID, aChildList); |
| michael@0 | 91 | } |
| michael@0 | 92 | |
| michael@0 | 93 | const nsFrameList& |
| michael@0 | 94 | nsPopupSetFrame::GetChildList(ChildListID aListID) const |
| michael@0 | 95 | { |
| michael@0 | 96 | if (kPopupList == aListID) { |
| michael@0 | 97 | return mPopupList; |
| michael@0 | 98 | } |
| michael@0 | 99 | return nsBoxFrame::GetChildList(aListID); |
| michael@0 | 100 | } |
| michael@0 | 101 | |
| michael@0 | 102 | void |
| michael@0 | 103 | nsPopupSetFrame::GetChildLists(nsTArray<ChildList>* aLists) const |
| michael@0 | 104 | { |
| michael@0 | 105 | nsBoxFrame::GetChildLists(aLists); |
| michael@0 | 106 | mPopupList.AppendIfNonempty(aLists, kPopupList); |
| michael@0 | 107 | } |
| michael@0 | 108 | |
| michael@0 | 109 | void |
| michael@0 | 110 | nsPopupSetFrame::DestroyFrom(nsIFrame* aDestructRoot) |
| michael@0 | 111 | { |
| michael@0 | 112 | mPopupList.DestroyFramesFrom(aDestructRoot); |
| michael@0 | 113 | |
| michael@0 | 114 | // Normally the root box is our grandparent, but in case of wrapping |
| michael@0 | 115 | // it can be our great-grandparent. |
| michael@0 | 116 | nsIRootBox *rootBox = nsIRootBox::GetRootBox(PresContext()->GetPresShell()); |
| michael@0 | 117 | if (rootBox) { |
| michael@0 | 118 | rootBox->SetPopupSetFrame(nullptr); |
| michael@0 | 119 | } |
| michael@0 | 120 | |
| michael@0 | 121 | nsBoxFrame::DestroyFrom(aDestructRoot); |
| michael@0 | 122 | } |
| michael@0 | 123 | |
| michael@0 | 124 | NS_IMETHODIMP |
| michael@0 | 125 | nsPopupSetFrame::DoLayout(nsBoxLayoutState& aState) |
| michael@0 | 126 | { |
| michael@0 | 127 | // lay us out |
| michael@0 | 128 | nsresult rv = nsBoxFrame::DoLayout(aState); |
| michael@0 | 129 | |
| michael@0 | 130 | // lay out all of our currently open popups. |
| michael@0 | 131 | for (nsFrameList::Enumerator e(mPopupList); !e.AtEnd(); e.Next()) { |
| michael@0 | 132 | nsMenuPopupFrame* popupChild = static_cast<nsMenuPopupFrame*>(e.get()); |
| michael@0 | 133 | popupChild->LayoutPopup(aState, nullptr, nullptr, false); |
| michael@0 | 134 | } |
| michael@0 | 135 | |
| michael@0 | 136 | return rv; |
| michael@0 | 137 | } |
| michael@0 | 138 | |
| michael@0 | 139 | void |
| michael@0 | 140 | nsPopupSetFrame::RemovePopupFrame(nsIFrame* aPopup) |
| michael@0 | 141 | { |
| michael@0 | 142 | NS_PRECONDITION((aPopup->GetStateBits() & NS_FRAME_OUT_OF_FLOW) && |
| michael@0 | 143 | aPopup->GetType() == nsGkAtoms::menuPopupFrame, |
| michael@0 | 144 | "removing wrong type of frame in popupset's ::popupList"); |
| michael@0 | 145 | |
| michael@0 | 146 | mPopupList.DestroyFrame(aPopup); |
| michael@0 | 147 | } |
| michael@0 | 148 | |
| michael@0 | 149 | void |
| michael@0 | 150 | nsPopupSetFrame::AddPopupFrameList(nsFrameList& aPopupFrameList) |
| michael@0 | 151 | { |
| michael@0 | 152 | #ifdef DEBUG |
| michael@0 | 153 | for (nsFrameList::Enumerator e(aPopupFrameList); !e.AtEnd(); e.Next()) { |
| michael@0 | 154 | NS_ASSERTION((e.get()->GetStateBits() & NS_FRAME_OUT_OF_FLOW) && |
| michael@0 | 155 | e.get()->GetType() == nsGkAtoms::menuPopupFrame, |
| michael@0 | 156 | "adding wrong type of frame in popupset's ::popupList"); |
| michael@0 | 157 | } |
| michael@0 | 158 | #endif |
| michael@0 | 159 | mPopupList.InsertFrames(nullptr, nullptr, aPopupFrameList); |
| michael@0 | 160 | } |
