dom/events/UIEvent.h@97036ab72558
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.
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef mozilla_dom_UIEvent_h_
7 #define mozilla_dom_UIEvent_h_
9 #include "mozilla/Attributes.h"
10 #include "mozilla/dom/Event.h"
11 #include "mozilla/dom/UIEventBinding.h"
12 #include "nsDeviceContext.h"
13 #include "nsIDOMUIEvent.h"
14 #include "nsLayoutUtils.h"
15 #include "nsPresContext.h"
17 class nsINode;
19 namespace mozilla {
20 namespace dom {
22 class UIEvent : public Event,
23 public nsIDOMUIEvent
24 {
25 public:
26 UIEvent(EventTarget* aOwner,
27 nsPresContext* aPresContext,
28 WidgetGUIEvent* aEvent);
30 NS_DECL_ISUPPORTS_INHERITED
31 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(UIEvent, Event)
33 // nsIDOMUIEvent Interface
34 NS_DECL_NSIDOMUIEVENT
36 // Forward to Event
37 NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION
38 NS_IMETHOD DuplicatePrivateData() MOZ_OVERRIDE;
39 NS_IMETHOD_(void) Serialize(IPC::Message* aMsg, bool aSerializeInterfaceType) MOZ_OVERRIDE;
40 NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg, void** aIter) MOZ_OVERRIDE;
42 static nsIntPoint CalculateScreenPoint(nsPresContext* aPresContext,
43 WidgetEvent* aEvent)
44 {
45 if (!aEvent ||
46 (aEvent->eventStructType != NS_MOUSE_EVENT &&
47 aEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
48 aEvent->eventStructType != NS_WHEEL_EVENT &&
49 aEvent->eventStructType != NS_DRAG_EVENT &&
50 aEvent->eventStructType != NS_POINTER_EVENT &&
51 aEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT)) {
52 return nsIntPoint(0, 0);
53 }
55 WidgetGUIEvent* event = aEvent->AsGUIEvent();
56 if (!event->widget) {
57 return LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint);
58 }
60 LayoutDeviceIntPoint offset = aEvent->refPoint +
61 LayoutDeviceIntPoint::FromUntyped(event->widget->WidgetToScreenOffset());
62 nscoord factor =
63 aPresContext->DeviceContext()->UnscaledAppUnitsPerDevPixel();
64 return nsIntPoint(nsPresContext::AppUnitsToIntCSSPixels(offset.x * factor),
65 nsPresContext::AppUnitsToIntCSSPixels(offset.y * factor));
66 }
68 static CSSIntPoint CalculateClientPoint(nsPresContext* aPresContext,
69 WidgetEvent* aEvent,
70 CSSIntPoint* aDefaultClientPoint)
71 {
72 if (!aEvent ||
73 (aEvent->eventStructType != NS_MOUSE_EVENT &&
74 aEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
75 aEvent->eventStructType != NS_WHEEL_EVENT &&
76 aEvent->eventStructType != NS_DRAG_EVENT &&
77 aEvent->eventStructType != NS_POINTER_EVENT &&
78 aEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT) ||
79 !aPresContext ||
80 !aEvent->AsGUIEvent()->widget) {
81 return aDefaultClientPoint
82 ? *aDefaultClientPoint
83 : CSSIntPoint(0, 0);
84 }
86 nsIPresShell* shell = aPresContext->GetPresShell();
87 if (!shell) {
88 return CSSIntPoint(0, 0);
89 }
90 nsIFrame* rootFrame = shell->GetRootFrame();
91 if (!rootFrame) {
92 return CSSIntPoint(0, 0);
93 }
94 nsPoint pt =
95 nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
97 return CSSIntPoint::FromAppUnitsRounded(pt);
98 }
100 static already_AddRefed<UIEvent> Constructor(const GlobalObject& aGlobal,
101 const nsAString& aType,
102 const UIEventInit& aParam,
103 ErrorResult& aRv);
105 virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
106 {
107 return UIEventBinding::Wrap(aCx, this);
108 }
110 nsIDOMWindow* GetView() const
111 {
112 return mView;
113 }
115 int32_t Detail() const
116 {
117 return mDetail;
118 }
120 int32_t LayerX() const
121 {
122 return GetLayerPoint().x;
123 }
125 int32_t LayerY() const
126 {
127 return GetLayerPoint().y;
128 }
130 int32_t PageX() const;
131 int32_t PageY() const;
133 virtual uint32_t Which()
134 {
135 MOZ_ASSERT(mEvent->eventStructType != NS_KEY_EVENT,
136 "Key events should override Which()");
137 MOZ_ASSERT(mEvent->eventStructType != NS_MOUSE_EVENT,
138 "Mouse events should override Which()");
139 return 0;
140 }
142 already_AddRefed<nsINode> GetRangeParent();
144 int32_t RangeOffset() const;
146 bool CancelBubble() const
147 {
148 return mEvent->mFlags.mPropagationStopped;
149 }
151 bool IsChar() const;
153 protected:
154 // Internal helper functions
155 nsIntPoint GetMovementPoint();
156 nsIntPoint GetLayerPoint() const;
158 nsCOMPtr<nsIDOMWindow> mView;
159 int32_t mDetail;
160 CSSIntPoint mClientPoint;
161 // Screenpoint is mEvent->refPoint.
162 nsIntPoint mLayerPoint;
163 CSSIntPoint mPagePoint;
164 nsIntPoint mMovementPoint;
165 bool mIsPointerLocked;
166 CSSIntPoint mLastClientPoint;
168 static Modifiers ComputeModifierState(const nsAString& aModifiersList);
169 bool GetModifierStateInternal(const nsAString& aKey);
170 };
172 } // namespace dom
173 } // namespace mozilla
175 #define NS_FORWARD_TO_UIEVENT \
176 NS_FORWARD_NSIDOMUIEVENT(UIEvent::) \
177 NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION \
178 NS_IMETHOD DuplicatePrivateData() \
179 { \
180 return UIEvent::DuplicatePrivateData(); \
181 } \
182 NS_IMETHOD_(void) Serialize(IPC::Message* aMsg, \
183 bool aSerializeInterfaceType) \
184 { \
185 UIEvent::Serialize(aMsg, aSerializeInterfaceType); \
186 } \
187 NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg, \
188 void** aIter) \
189 { \
190 return UIEvent::Deserialize(aMsg, aIter); \
191 }
193 #endif // mozilla_dom_UIEvent_h_
