The Tor Browser / annotate

dom/events/UIEvent.h@97036ab72558 (annotated)

dom/events/UIEvent.h

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 /* 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 #ifndef mozilla_dom_UIEvent_h_
michael@0 7 #define mozilla_dom_UIEvent_h_
michael@0 8
michael@0 9 #include "mozilla/Attributes.h"
michael@0 10 #include "mozilla/dom/Event.h"
michael@0 11 #include "mozilla/dom/UIEventBinding.h"
michael@0 12 #include "nsDeviceContext.h"
michael@0 13 #include "nsIDOMUIEvent.h"
michael@0 14 #include "nsLayoutUtils.h"
michael@0 15 #include "nsPresContext.h"
michael@0 16
michael@0 17 class nsINode;
michael@0 18
michael@0 19 namespace mozilla {
michael@0 20 namespace dom {
michael@0 21
michael@0 22 class UIEvent : public Event,
michael@0 23 public nsIDOMUIEvent
michael@0 24 {
michael@0 25 public:
michael@0 26 UIEvent(EventTarget* aOwner,
michael@0 27 nsPresContext* aPresContext,
michael@0 28 WidgetGUIEvent* aEvent);
michael@0 29
michael@0 30 NS_DECL_ISUPPORTS_INHERITED
michael@0 31 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(UIEvent, Event)
michael@0 32
michael@0 33 // nsIDOMUIEvent Interface
michael@0 34 NS_DECL_NSIDOMUIEVENT
michael@0 35
michael@0 36 // Forward to Event
michael@0 37 NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION
michael@0 38 NS_IMETHOD DuplicatePrivateData() MOZ_OVERRIDE;
michael@0 39 NS_IMETHOD_(void) Serialize(IPC::Message* aMsg, bool aSerializeInterfaceType) MOZ_OVERRIDE;
michael@0 40 NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg, void** aIter) MOZ_OVERRIDE;
michael@0 41
michael@0 42 static nsIntPoint CalculateScreenPoint(nsPresContext* aPresContext,
michael@0 43 WidgetEvent* aEvent)
michael@0 44 {
michael@0 45 if (!aEvent ||
michael@0 46 (aEvent->eventStructType != NS_MOUSE_EVENT &&
michael@0 47 aEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
michael@0 48 aEvent->eventStructType != NS_WHEEL_EVENT &&
michael@0 49 aEvent->eventStructType != NS_DRAG_EVENT &&
michael@0 50 aEvent->eventStructType != NS_POINTER_EVENT &&
michael@0 51 aEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT)) {
michael@0 52 return nsIntPoint(0, 0);
michael@0 53 }
michael@0 54
michael@0 55 WidgetGUIEvent* event = aEvent->AsGUIEvent();
michael@0 56 if (!event->widget) {
michael@0 57 return LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint);
michael@0 58 }
michael@0 59
michael@0 60 LayoutDeviceIntPoint offset = aEvent->refPoint +
michael@0 61 LayoutDeviceIntPoint::FromUntyped(event->widget->WidgetToScreenOffset());
michael@0 62 nscoord factor =
michael@0 63 aPresContext->DeviceContext()->UnscaledAppUnitsPerDevPixel();
michael@0 64 return nsIntPoint(nsPresContext::AppUnitsToIntCSSPixels(offset.x * factor),
michael@0 65 nsPresContext::AppUnitsToIntCSSPixels(offset.y * factor));
michael@0 66 }
michael@0 67
michael@0 68 static CSSIntPoint CalculateClientPoint(nsPresContext* aPresContext,
michael@0 69 WidgetEvent* aEvent,
michael@0 70 CSSIntPoint* aDefaultClientPoint)
michael@0 71 {
michael@0 72 if (!aEvent ||
michael@0 73 (aEvent->eventStructType != NS_MOUSE_EVENT &&
michael@0 74 aEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
michael@0 75 aEvent->eventStructType != NS_WHEEL_EVENT &&
michael@0 76 aEvent->eventStructType != NS_DRAG_EVENT &&
michael@0 77 aEvent->eventStructType != NS_POINTER_EVENT &&
michael@0 78 aEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT) ||
michael@0 79 !aPresContext ||
michael@0 80 !aEvent->AsGUIEvent()->widget) {
michael@0 81 return aDefaultClientPoint
michael@0 82 ? *aDefaultClientPoint
michael@0 83 : CSSIntPoint(0, 0);
michael@0 84 }
michael@0 85
michael@0 86 nsIPresShell* shell = aPresContext->GetPresShell();
michael@0 87 if (!shell) {
michael@0 88 return CSSIntPoint(0, 0);
michael@0 89 }
michael@0 90 nsIFrame* rootFrame = shell->GetRootFrame();
michael@0 91 if (!rootFrame) {
michael@0 92 return CSSIntPoint(0, 0);
michael@0 93 }
michael@0 94 nsPoint pt =
michael@0 95 nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
michael@0 96
michael@0 97 return CSSIntPoint::FromAppUnitsRounded(pt);
michael@0 98 }
michael@0 99
michael@0 100 static already_AddRefed<UIEvent> Constructor(const GlobalObject& aGlobal,
michael@0 101 const nsAString& aType,
michael@0 102 const UIEventInit& aParam,
michael@0 103 ErrorResult& aRv);
michael@0 104
michael@0 105 virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
michael@0 106 {
michael@0 107 return UIEventBinding::Wrap(aCx, this);
michael@0 108 }
michael@0 109
michael@0 110 nsIDOMWindow* GetView() const
michael@0 111 {
michael@0 112 return mView;
michael@0 113 }
michael@0 114
michael@0 115 int32_t Detail() const
michael@0 116 {
michael@0 117 return mDetail;
michael@0 118 }
michael@0 119
michael@0 120 int32_t LayerX() const
michael@0 121 {
michael@0 122 return GetLayerPoint().x;
michael@0 123 }
michael@0 124
michael@0 125 int32_t LayerY() const
michael@0 126 {
michael@0 127 return GetLayerPoint().y;
michael@0 128 }
michael@0 129
michael@0 130 int32_t PageX() const;
michael@0 131 int32_t PageY() const;
michael@0 132
michael@0 133 virtual uint32_t Which()
michael@0 134 {
michael@0 135 MOZ_ASSERT(mEvent->eventStructType != NS_KEY_EVENT,
michael@0 136 "Key events should override Which()");
michael@0 137 MOZ_ASSERT(mEvent->eventStructType != NS_MOUSE_EVENT,
michael@0 138 "Mouse events should override Which()");
michael@0 139 return 0;
michael@0 140 }
michael@0 141
michael@0 142 already_AddRefed<nsINode> GetRangeParent();
michael@0 143
michael@0 144 int32_t RangeOffset() const;
michael@0 145
michael@0 146 bool CancelBubble() const
michael@0 147 {
michael@0 148 return mEvent->mFlags.mPropagationStopped;
michael@0 149 }
michael@0 150
michael@0 151 bool IsChar() const;
michael@0 152
michael@0 153 protected:
michael@0 154 // Internal helper functions
michael@0 155 nsIntPoint GetMovementPoint();
michael@0 156 nsIntPoint GetLayerPoint() const;
michael@0 157
michael@0 158 nsCOMPtr<nsIDOMWindow> mView;
michael@0 159 int32_t mDetail;
michael@0 160 CSSIntPoint mClientPoint;
michael@0 161 // Screenpoint is mEvent->refPoint.
michael@0 162 nsIntPoint mLayerPoint;
michael@0 163 CSSIntPoint mPagePoint;
michael@0 164 nsIntPoint mMovementPoint;
michael@0 165 bool mIsPointerLocked;
michael@0 166 CSSIntPoint mLastClientPoint;
michael@0 167
michael@0 168 static Modifiers ComputeModifierState(const nsAString& aModifiersList);
michael@0 169 bool GetModifierStateInternal(const nsAString& aKey);
michael@0 170 };
michael@0 171
michael@0 172 } // namespace dom
michael@0 173 } // namespace mozilla
michael@0 174
michael@0 175 #define NS_FORWARD_TO_UIEVENT \
michael@0 176 NS_FORWARD_NSIDOMUIEVENT(UIEvent::) \
michael@0 177 NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION \
michael@0 178 NS_IMETHOD DuplicatePrivateData() \
michael@0 179 { \
michael@0 180 return UIEvent::DuplicatePrivateData(); \
michael@0 181 } \
michael@0 182 NS_IMETHOD_(void) Serialize(IPC::Message* aMsg, \
michael@0 183 bool aSerializeInterfaceType) \
michael@0 184 { \
michael@0 185 UIEvent::Serialize(aMsg, aSerializeInterfaceType); \
michael@0 186 } \
michael@0 187 NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg, \
michael@0 188 void** aIter) \
michael@0 189 { \
michael@0 190 return UIEvent::Deserialize(aMsg, aIter); \
michael@0 191 }
michael@0 192
michael@0 193 #endif // mozilla_dom_UIEvent_h_

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