accessible/src/atk/nsMaiInterfaceComponent.cpp@97036ab72558 (annotated)
accessible/src/atk/nsMaiInterfaceComponent.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
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 | /* vim: set ts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include "InterfaceInitFuncs.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "AccessibleWrap.h" |
| michael@0 | 10 | #include "nsAccUtils.h" |
| michael@0 | 11 | #include "nsCoreUtils.h" |
| michael@0 | 12 | #include "nsMai.h" |
| michael@0 | 13 | #include "mozilla/Likely.h" |
| michael@0 | 14 | |
| michael@0 | 15 | using namespace mozilla::a11y; |
| michael@0 | 16 | |
| michael@0 | 17 | extern "C" { |
| michael@0 | 18 | |
| michael@0 | 19 | static AtkObject* |
| michael@0 | 20 | refAccessibleAtPointCB(AtkComponent* aComponent, gint aAccX, gint aAccY, |
| michael@0 | 21 | AtkCoordType aCoordType) |
| michael@0 | 22 | { |
| michael@0 | 23 | return refAccessibleAtPointHelper(GetAccessibleWrap(ATK_OBJECT(aComponent)), |
| michael@0 | 24 | aAccX, aAccY, aCoordType); |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | static void |
| michael@0 | 28 | getExtentsCB(AtkComponent* aComponent, gint* aX, gint* aY, |
| michael@0 | 29 | gint* aWidth, gint* aHeight, AtkCoordType aCoordType) |
| michael@0 | 30 | { |
| michael@0 | 31 | getExtentsHelper(GetAccessibleWrap(ATK_OBJECT(aComponent)), |
| michael@0 | 32 | aX, aY, aWidth, aHeight, aCoordType); |
| michael@0 | 33 | } |
| michael@0 | 34 | |
| michael@0 | 35 | static gboolean |
| michael@0 | 36 | grabFocusCB(AtkComponent* aComponent) |
| michael@0 | 37 | { |
| michael@0 | 38 | AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aComponent)); |
| michael@0 | 39 | if (!accWrap) |
| michael@0 | 40 | return FALSE; |
| michael@0 | 41 | |
| michael@0 | 42 | nsresult rv = accWrap->TakeFocus(); |
| michael@0 | 43 | return (NS_FAILED(rv)) ? FALSE : TRUE; |
| michael@0 | 44 | } |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | AtkObject* |
| michael@0 | 48 | refAccessibleAtPointHelper(AccessibleWrap* aAccWrap, gint aX, gint aY, |
| michael@0 | 49 | AtkCoordType aCoordType) |
| michael@0 | 50 | { |
| michael@0 | 51 | if (!aAccWrap || aAccWrap->IsDefunct() || nsAccUtils::MustPrune(aAccWrap)) |
| michael@0 | 52 | return nullptr; |
| michael@0 | 53 | |
| michael@0 | 54 | // Accessible::ChildAtPoint(x,y) is in screen pixels. |
| michael@0 | 55 | if (aCoordType == ATK_XY_WINDOW) { |
| michael@0 | 56 | nsIntPoint winCoords = |
| michael@0 | 57 | nsCoreUtils::GetScreenCoordsForWindow(aAccWrap->GetNode()); |
| michael@0 | 58 | aX += winCoords.x; |
| michael@0 | 59 | aY += winCoords.y; |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | Accessible* accAtPoint = aAccWrap->ChildAtPoint(aX, aY, |
| michael@0 | 63 | Accessible::eDirectChild); |
| michael@0 | 64 | if (!accAtPoint) |
| michael@0 | 65 | return nullptr; |
| michael@0 | 66 | |
| michael@0 | 67 | AtkObject* atkObj = AccessibleWrap::GetAtkObject(accAtPoint); |
| michael@0 | 68 | if (atkObj) |
| michael@0 | 69 | g_object_ref(atkObj); |
| michael@0 | 70 | return atkObj; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | void |
| michael@0 | 74 | getExtentsHelper(AccessibleWrap* aAccWrap, |
| michael@0 | 75 | gint* aX, gint* aY, gint* aWidth, gint* aHeight, |
| michael@0 | 76 | AtkCoordType aCoordType) |
| michael@0 | 77 | { |
| michael@0 | 78 | *aX = *aY = *aWidth = *aHeight = 0; |
| michael@0 | 79 | |
| michael@0 | 80 | if (!aAccWrap || aAccWrap->IsDefunct()) |
| michael@0 | 81 | return; |
| michael@0 | 82 | |
| michael@0 | 83 | int32_t x = 0, y = 0, width = 0, height = 0; |
| michael@0 | 84 | // Returned in screen coordinates |
| michael@0 | 85 | nsresult rv = aAccWrap->GetBounds(&x, &y, &width, &height); |
| michael@0 | 86 | if (NS_FAILED(rv)) |
| michael@0 | 87 | return; |
| michael@0 | 88 | |
| michael@0 | 89 | if (aCoordType == ATK_XY_WINDOW) { |
| michael@0 | 90 | nsIntPoint winCoords = |
| michael@0 | 91 | nsCoreUtils::GetScreenCoordsForWindow(aAccWrap->GetNode()); |
| michael@0 | 92 | x -= winCoords.x; |
| michael@0 | 93 | y -= winCoords.y; |
| michael@0 | 94 | } |
| michael@0 | 95 | |
| michael@0 | 96 | *aX = x; |
| michael@0 | 97 | *aY = y; |
| michael@0 | 98 | *aWidth = width; |
| michael@0 | 99 | *aHeight = height; |
| michael@0 | 100 | } |
| michael@0 | 101 | |
| michael@0 | 102 | void |
| michael@0 | 103 | componentInterfaceInitCB(AtkComponentIface* aIface) |
| michael@0 | 104 | { |
| michael@0 | 105 | NS_ASSERTION(aIface, "Invalid Interface"); |
| michael@0 | 106 | if(MOZ_UNLIKELY(!aIface)) |
| michael@0 | 107 | return; |
| michael@0 | 108 | |
| michael@0 | 109 | /* |
| michael@0 | 110 | * Use default implementation in atk for contains, get_position, |
| michael@0 | 111 | * and get_size |
| michael@0 | 112 | */ |
| michael@0 | 113 | aIface->ref_accessible_at_point = refAccessibleAtPointCB; |
| michael@0 | 114 | aIface->get_extents = getExtentsCB; |
| michael@0 | 115 | aIface->grab_focus = grabFocusCB; |
| michael@0 | 116 | } |
