The Tor Browser / file comparison
comparison: dom/events/DragEvent.cpp
dom/events/DragEvent.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:4c424a7b22b2 |
|---|---|
| 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/. */ | |
| 5 | |
| 6 #include "mozilla/dom/DragEvent.h" | |
| 7 #include "mozilla/MouseEvents.h" | |
| 8 #include "nsContentUtils.h" | |
| 9 #include "prtime.h" | |
| 10 | |
| 11 namespace mozilla { | |
| 12 namespace dom { | |
| 13 | |
| 14 DragEvent::DragEvent(EventTarget* aOwner, | |
| 15 nsPresContext* aPresContext, | |
| 16 WidgetDragEvent* aEvent) | |
| 17 : MouseEvent(aOwner, aPresContext, | |
| 18 aEvent ? aEvent : new WidgetDragEvent(false, 0, nullptr)) | |
| 19 { | |
| 20 if (aEvent) { | |
| 21 mEventIsInternal = false; | |
| 22 } | |
| 23 else { | |
| 24 mEventIsInternal = true; | |
| 25 mEvent->time = PR_Now(); | |
| 26 mEvent->refPoint.x = mEvent->refPoint.y = 0; | |
| 27 mEvent->AsMouseEvent()->inputSource = nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN; | |
| 28 } | |
| 29 } | |
| 30 | |
| 31 NS_IMPL_ADDREF_INHERITED(DragEvent, MouseEvent) | |
| 32 NS_IMPL_RELEASE_INHERITED(DragEvent, MouseEvent) | |
| 33 | |
| 34 NS_INTERFACE_MAP_BEGIN(DragEvent) | |
| 35 NS_INTERFACE_MAP_ENTRY(nsIDOMDragEvent) | |
| 36 NS_INTERFACE_MAP_END_INHERITING(MouseEvent) | |
| 37 | |
| 38 void | |
| 39 DragEvent::InitDragEvent(const nsAString& aType, | |
| 40 bool aCanBubble, | |
| 41 bool aCancelable, | |
| 42 nsIDOMWindow* aView, | |
| 43 int32_t aDetail, | |
| 44 int32_t aScreenX, | |
| 45 int32_t aScreenY, | |
| 46 int32_t aClientX, | |
| 47 int32_t aClientY, | |
| 48 bool aCtrlKey, | |
| 49 bool aAltKey, | |
| 50 bool aShiftKey, | |
| 51 bool aMetaKey, | |
| 52 uint16_t aButton, | |
| 53 EventTarget* aRelatedTarget, | |
| 54 DataTransfer* aDataTransfer, | |
| 55 ErrorResult& aError) | |
| 56 { | |
| 57 aError = | |
| 58 MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, | |
| 59 aView, aDetail, aScreenX, aScreenY, | |
| 60 aClientX, aClientY, aCtrlKey, aAltKey, | |
| 61 aShiftKey, aMetaKey, aButton, aRelatedTarget); | |
| 62 if (aError.Failed()) { | |
| 63 return; | |
| 64 } | |
| 65 | |
| 66 if (mEventIsInternal && mEvent) { | |
| 67 mEvent->AsDragEvent()->dataTransfer = aDataTransfer; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 NS_IMETHODIMP | |
| 72 DragEvent::InitDragEvent(const nsAString& aType, | |
| 73 bool aCanBubble, | |
| 74 bool aCancelable, | |
| 75 nsIDOMWindow* aView, | |
| 76 int32_t aDetail, | |
| 77 int32_t aScreenX, | |
| 78 int32_t aScreenY, | |
| 79 int32_t aClientX, | |
| 80 int32_t aClientY, | |
| 81 bool aCtrlKey, | |
| 82 bool aAltKey, | |
| 83 bool aShiftKey, | |
| 84 bool aMetaKey, | |
| 85 uint16_t aButton, | |
| 86 nsIDOMEventTarget* aRelatedTarget, | |
| 87 nsIDOMDataTransfer* aDataTransfer) | |
| 88 { | |
| 89 nsCOMPtr<DataTransfer> dataTransfer = do_QueryInterface(aDataTransfer); | |
| 90 | |
| 91 nsresult rv = | |
| 92 MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, aView, aDetail, | |
| 93 aScreenX, aScreenY, aClientX, aClientY, | |
| 94 aCtrlKey, aAltKey, aShiftKey, aMetaKey, aButton, | |
| 95 aRelatedTarget); | |
| 96 NS_ENSURE_SUCCESS(rv, rv); | |
| 97 | |
| 98 if (mEventIsInternal && mEvent) { | |
| 99 mEvent->AsDragEvent()->dataTransfer = dataTransfer; | |
| 100 } | |
| 101 | |
| 102 return NS_OK; | |
| 103 } | |
| 104 | |
| 105 NS_IMETHODIMP | |
| 106 DragEvent::GetDataTransfer(nsIDOMDataTransfer** aDataTransfer) | |
| 107 { | |
| 108 NS_IF_ADDREF(*aDataTransfer = GetDataTransfer()); | |
| 109 return NS_OK; | |
| 110 } | |
| 111 | |
| 112 DataTransfer* | |
| 113 DragEvent::GetDataTransfer() | |
| 114 { | |
| 115 // the dataTransfer field of the event caches the DataTransfer associated | |
| 116 // with the drag. It is initialized when an attempt is made to retrieve it | |
| 117 // rather that when the event is created to avoid duplicating the data when | |
| 118 // no listener ever uses it. | |
| 119 if (!mEvent || mEvent->eventStructType != NS_DRAG_EVENT) { | |
| 120 NS_WARNING("Tried to get dataTransfer from non-drag event!"); | |
| 121 return nullptr; | |
| 122 } | |
| 123 | |
| 124 WidgetDragEvent* dragEvent = mEvent->AsDragEvent(); | |
| 125 // for synthetic events, just use the supplied data transfer object even if null | |
| 126 if (!mEventIsInternal) { | |
| 127 nsresult rv = nsContentUtils::SetDataTransferInEvent(dragEvent); | |
| 128 NS_ENSURE_SUCCESS(rv, nullptr); | |
| 129 } | |
| 130 | |
| 131 return dragEvent->dataTransfer; | |
| 132 } | |
| 133 | |
| 134 } // namespace dom | |
| 135 } // namespace mozilla | |
| 136 | |
| 137 using namespace mozilla; | |
| 138 using namespace mozilla::dom; | |
| 139 | |
| 140 nsresult | |
| 141 NS_NewDOMDragEvent(nsIDOMEvent** aInstancePtrResult, | |
| 142 EventTarget* aOwner, | |
| 143 nsPresContext* aPresContext, | |
| 144 WidgetDragEvent* aEvent) | |
| 145 { | |
| 146 DragEvent* event = new DragEvent(aOwner, aPresContext, aEvent); | |
| 147 return CallQueryInterface(event, aInstancePtrResult); | |
| 148 } |
