diff options
Diffstat (limited to 'dom/events/MouseEvent.cpp')
| -rw-r--r-- | dom/events/MouseEvent.cpp | 542 |
1 files changed, 542 insertions, 0 deletions
diff --git a/dom/events/MouseEvent.cpp b/dom/events/MouseEvent.cpp new file mode 100644 index 000000000..5e540ac5b --- /dev/null +++ b/dom/events/MouseEvent.cpp @@ -0,0 +1,542 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/dom/MouseEvent.h" +#include "mozilla/MouseEvents.h" +#include "nsContentUtils.h" +#include "nsIContent.h" +#include "prtime.h" + +namespace mozilla { +namespace dom { + +MouseEvent::MouseEvent(EventTarget* aOwner, + nsPresContext* aPresContext, + WidgetMouseEventBase* aEvent) + : UIEvent(aOwner, aPresContext, + aEvent ? aEvent : + new WidgetMouseEvent(false, eVoidEvent, nullptr, + WidgetMouseEvent::eReal)) +{ + // There's no way to make this class' ctor allocate an WidgetMouseScrollEvent. + // It's not that important, though, since a scroll event is not a real + // DOM event. + + WidgetMouseEvent* mouseEvent = mEvent->AsMouseEvent(); + if (aEvent) { + mEventIsInternal = false; + } + else { + mEventIsInternal = true; + mEvent->mTime = PR_Now(); + mEvent->mRefPoint = LayoutDeviceIntPoint(0, 0); + mouseEvent->inputSource = nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN; + } + + if (mouseEvent) { + MOZ_ASSERT(mouseEvent->mReason != WidgetMouseEvent::eSynthesized, + "Don't dispatch DOM events from synthesized mouse events"); + mDetail = mouseEvent->mClickCount; + } +} + +NS_IMPL_ADDREF_INHERITED(MouseEvent, UIEvent) +NS_IMPL_RELEASE_INHERITED(MouseEvent, UIEvent) + +NS_INTERFACE_MAP_BEGIN(MouseEvent) + NS_INTERFACE_MAP_ENTRY(nsIDOMMouseEvent) +NS_INTERFACE_MAP_END_INHERITING(UIEvent) + +void +MouseEvent::InitMouseEvent(const nsAString& aType, + bool aCanBubble, + bool aCancelable, + nsGlobalWindow* aView, + int32_t aDetail, + int32_t aScreenX, + int32_t aScreenY, + int32_t aClientX, + int32_t aClientY, + bool aCtrlKey, + bool aAltKey, + bool aShiftKey, + bool aMetaKey, + uint16_t aButton, + EventTarget* aRelatedTarget) +{ + NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched); + + UIEvent::InitUIEvent(aType, aCanBubble, aCancelable, aView, aDetail); + + switch(mEvent->mClass) { + case eMouseEventClass: + case eMouseScrollEventClass: + case eWheelEventClass: + case eDragEventClass: + case ePointerEventClass: + case eSimpleGestureEventClass: { + WidgetMouseEventBase* mouseEventBase = mEvent->AsMouseEventBase(); + mouseEventBase->relatedTarget = aRelatedTarget; + mouseEventBase->button = aButton; + mouseEventBase->InitBasicModifiers(aCtrlKey, aAltKey, aShiftKey, aMetaKey); + mClientPoint.x = aClientX; + mClientPoint.y = aClientY; + mouseEventBase->mRefPoint.x = aScreenX; + mouseEventBase->mRefPoint.y = aScreenY; + + WidgetMouseEvent* mouseEvent = mEvent->AsMouseEvent(); + if (mouseEvent) { + mouseEvent->mClickCount = aDetail; + } + break; + } + default: + break; + } +} + +NS_IMETHODIMP +MouseEvent::InitMouseEvent(const nsAString& aType, + bool aCanBubble, + bool aCancelable, + mozIDOMWindow* aView, + int32_t aDetail, + int32_t aScreenX, + int32_t aScreenY, + int32_t aClientX, + int32_t aClientY, + bool aCtrlKey, + bool aAltKey, + bool aShiftKey, + bool aMetaKey, + uint16_t aButton, + nsIDOMEventTarget* aRelatedTarget) +{ + MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, + nsGlobalWindow::Cast(aView), aDetail, + aScreenX, aScreenY, + aClientX, aClientY, + aCtrlKey, aAltKey, aShiftKey, + aMetaKey, aButton, + static_cast<EventTarget *>(aRelatedTarget)); + + return NS_OK; +} + +void +MouseEvent::InitMouseEvent(const nsAString& aType, + bool aCanBubble, + bool aCancelable, + nsGlobalWindow* aView, + int32_t aDetail, + int32_t aScreenX, + int32_t aScreenY, + int32_t aClientX, + int32_t aClientY, + int16_t aButton, + EventTarget* aRelatedTarget, + const nsAString& aModifiersList) +{ + NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched); + + Modifiers modifiers = ComputeModifierState(aModifiersList); + + InitMouseEvent(aType, aCanBubble, aCancelable, aView, aDetail, + aScreenX, aScreenY, aClientX, aClientY, + (modifiers & MODIFIER_CONTROL) != 0, + (modifiers & MODIFIER_ALT) != 0, + (modifiers & MODIFIER_SHIFT) != 0, + (modifiers & MODIFIER_META) != 0, + aButton, aRelatedTarget); + + switch(mEvent->mClass) { + case eMouseEventClass: + case eMouseScrollEventClass: + case eWheelEventClass: + case eDragEventClass: + case ePointerEventClass: + case eSimpleGestureEventClass: + mEvent->AsInputEvent()->mModifiers = modifiers; + return; + default: + MOZ_CRASH("There is no space to store the modifiers"); + } +} + +void +MouseEvent::InitializeExtraMouseEventDictionaryMembers(const MouseEventInit& aParam) +{ + InitModifiers(aParam); + mEvent->AsMouseEventBase()->buttons = aParam.mButtons; + mMovementPoint.x = aParam.mMovementX; + mMovementPoint.y = aParam.mMovementY; +} + +already_AddRefed<MouseEvent> +MouseEvent::Constructor(const GlobalObject& aGlobal, + const nsAString& aType, + const MouseEventInit& aParam, + ErrorResult& aRv) +{ + nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports()); + RefPtr<MouseEvent> e = new MouseEvent(t, nullptr, nullptr); + bool trusted = e->Init(t); + e->InitMouseEvent(aType, aParam.mBubbles, aParam.mCancelable, + aParam.mView, aParam.mDetail, aParam.mScreenX, + aParam.mScreenY, aParam.mClientX, aParam.mClientY, + aParam.mCtrlKey, aParam.mAltKey, aParam.mShiftKey, + aParam.mMetaKey, aParam.mButton, aParam.mRelatedTarget); + e->InitializeExtraMouseEventDictionaryMembers(aParam); + e->SetTrusted(trusted); + e->SetComposed(aParam.mComposed); + return e.forget(); +} + +void +MouseEvent::InitNSMouseEvent(const nsAString& aType, + bool aCanBubble, + bool aCancelable, + nsGlobalWindow* aView, + int32_t aDetail, + int32_t aScreenX, + int32_t aScreenY, + int32_t aClientX, + int32_t aClientY, + bool aCtrlKey, + bool aAltKey, + bool aShiftKey, + bool aMetaKey, + uint16_t aButton, + EventTarget* aRelatedTarget, + float aPressure, + uint16_t aInputSource) +{ + NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched); + + MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, + aView, aDetail, aScreenX, aScreenY, + aClientX, aClientY, + aCtrlKey, aAltKey, aShiftKey, + aMetaKey, aButton, aRelatedTarget); + + WidgetMouseEventBase* mouseEventBase = mEvent->AsMouseEventBase(); + mouseEventBase->pressure = aPressure; + mouseEventBase->inputSource = aInputSource; +} + +NS_IMETHODIMP +MouseEvent::GetButton(int16_t* aButton) +{ + NS_ENSURE_ARG_POINTER(aButton); + *aButton = Button(); + return NS_OK; +} + +int16_t +MouseEvent::Button() +{ + switch(mEvent->mClass) { + case eMouseEventClass: + case eMouseScrollEventClass: + case eWheelEventClass: + case eDragEventClass: + case ePointerEventClass: + case eSimpleGestureEventClass: + return mEvent->AsMouseEventBase()->button; + default: + NS_WARNING("Tried to get mouse button for non-mouse event!"); + return WidgetMouseEvent::eLeftButton; + } +} + +NS_IMETHODIMP +MouseEvent::GetButtons(uint16_t* aButtons) +{ + NS_ENSURE_ARG_POINTER(aButtons); + *aButtons = Buttons(); + return NS_OK; +} + +uint16_t +MouseEvent::Buttons() +{ + switch(mEvent->mClass) { + case eMouseEventClass: + case eMouseScrollEventClass: + case eWheelEventClass: + case eDragEventClass: + case ePointerEventClass: + case eSimpleGestureEventClass: + return mEvent->AsMouseEventBase()->buttons; + default: + MOZ_CRASH("Tried to get mouse buttons for non-mouse event!"); + } +} + +NS_IMETHODIMP +MouseEvent::GetRelatedTarget(nsIDOMEventTarget** aRelatedTarget) +{ + NS_ENSURE_ARG_POINTER(aRelatedTarget); + *aRelatedTarget = GetRelatedTarget().take(); + return NS_OK; +} + +already_AddRefed<EventTarget> +MouseEvent::GetRelatedTarget() +{ + nsCOMPtr<EventTarget> relatedTarget; + switch(mEvent->mClass) { + case eMouseEventClass: + case eMouseScrollEventClass: + case eWheelEventClass: + case eDragEventClass: + case ePointerEventClass: + case eSimpleGestureEventClass: + relatedTarget = + do_QueryInterface(mEvent->AsMouseEventBase()->relatedTarget); + break; + default: + break; + } + + if (relatedTarget) { + nsCOMPtr<nsIContent> content = do_QueryInterface(relatedTarget); + nsCOMPtr<nsIContent> currentTarget = + do_QueryInterface(mEvent->mCurrentTarget); + + nsIContent* shadowRelatedTarget = GetShadowRelatedTarget(currentTarget, content); + if (shadowRelatedTarget) { + relatedTarget = shadowRelatedTarget; + } + + if (content && content->ChromeOnlyAccess() && + !nsContentUtils::CanAccessNativeAnon()) { + relatedTarget = do_QueryInterface(content->FindFirstNonChromeOnlyAccessContent()); + } + + if (relatedTarget) { + relatedTarget = relatedTarget->GetTargetForDOMEvent(); + } + return relatedTarget.forget(); + } + return nullptr; +} + +void +MouseEvent::GetRegion(nsAString& aRegion) +{ + SetDOMStringToNull(aRegion); + WidgetMouseEventBase* mouseEventBase = mEvent->AsMouseEventBase(); + if (mouseEventBase) { + aRegion = mouseEventBase->region; + } +} + +NS_IMETHODIMP +MouseEvent::GetMozMovementX(int32_t* aMovementX) +{ + NS_ENSURE_ARG_POINTER(aMovementX); + *aMovementX = MovementX(); + + return NS_OK; +} + +NS_IMETHODIMP +MouseEvent::GetMozMovementY(int32_t* aMovementY) +{ + NS_ENSURE_ARG_POINTER(aMovementY); + *aMovementY = MovementY(); + + return NS_OK; +} + +NS_IMETHODIMP +MouseEvent::GetScreenX(int32_t* aScreenX) +{ + NS_ENSURE_ARG_POINTER(aScreenX); + *aScreenX = ScreenX(); + return NS_OK; +} + +int32_t +MouseEvent::ScreenX() +{ + return Event::GetScreenCoords(mPresContext, mEvent, mEvent->mRefPoint).x; +} + +NS_IMETHODIMP +MouseEvent::GetScreenY(int32_t* aScreenY) +{ + NS_ENSURE_ARG_POINTER(aScreenY); + *aScreenY = ScreenY(); + return NS_OK; +} + +int32_t +MouseEvent::ScreenY() +{ + return Event::GetScreenCoords(mPresContext, mEvent, mEvent->mRefPoint).y; +} + + +NS_IMETHODIMP +MouseEvent::GetClientX(int32_t* aClientX) +{ + NS_ENSURE_ARG_POINTER(aClientX); + *aClientX = ClientX(); + return NS_OK; +} + +int32_t +MouseEvent::ClientX() +{ + return Event::GetClientCoords(mPresContext, mEvent, mEvent->mRefPoint, + mClientPoint).x; +} + +NS_IMETHODIMP +MouseEvent::GetClientY(int32_t* aClientY) +{ + NS_ENSURE_ARG_POINTER(aClientY); + *aClientY = ClientY(); + return NS_OK; +} + +int32_t +MouseEvent::ClientY() +{ + return Event::GetClientCoords(mPresContext, mEvent, mEvent->mRefPoint, + mClientPoint).y; +} + +int32_t +MouseEvent::OffsetX() +{ + return Event::GetOffsetCoords(mPresContext, mEvent, mEvent->mRefPoint, + mClientPoint).x; +} + +int32_t +MouseEvent::OffsetY() +{ + return Event::GetOffsetCoords(mPresContext, mEvent, mEvent->mRefPoint, + mClientPoint).y; +} + +bool +MouseEvent::AltKey() +{ + return mEvent->AsInputEvent()->IsAlt(); +} + +NS_IMETHODIMP +MouseEvent::GetAltKey(bool* aIsDown) +{ + NS_ENSURE_ARG_POINTER(aIsDown); + *aIsDown = AltKey(); + return NS_OK; +} + +bool +MouseEvent::CtrlKey() +{ + return mEvent->AsInputEvent()->IsControl(); +} + +NS_IMETHODIMP +MouseEvent::GetCtrlKey(bool* aIsDown) +{ + NS_ENSURE_ARG_POINTER(aIsDown); + *aIsDown = CtrlKey(); + return NS_OK; +} + +bool +MouseEvent::ShiftKey() +{ + return mEvent->AsInputEvent()->IsShift(); +} + +NS_IMETHODIMP +MouseEvent::GetShiftKey(bool* aIsDown) +{ + NS_ENSURE_ARG_POINTER(aIsDown); + *aIsDown = ShiftKey(); + return NS_OK; +} + +bool +MouseEvent::MetaKey() +{ + return mEvent->AsInputEvent()->IsMeta(); +} + +NS_IMETHODIMP +MouseEvent::GetMetaKey(bool* aIsDown) +{ + NS_ENSURE_ARG_POINTER(aIsDown); + *aIsDown = MetaKey(); + return NS_OK; +} + +NS_IMETHODIMP +MouseEvent::GetModifierState(const nsAString& aKey, + bool* aState) +{ + NS_ENSURE_ARG_POINTER(aState); + + *aState = GetModifierState(aKey); + return NS_OK; +} + +float +MouseEvent::MozPressure() const +{ + return mEvent->AsMouseEventBase()->pressure; +} + +NS_IMETHODIMP +MouseEvent::GetMozPressure(float* aPressure) +{ + NS_ENSURE_ARG_POINTER(aPressure); + *aPressure = MozPressure(); + return NS_OK; +} + +bool +MouseEvent::HitCluster() const +{ + return mEvent->AsMouseEventBase()->hitCluster; +} + +uint16_t +MouseEvent::MozInputSource() const +{ + return mEvent->AsMouseEventBase()->inputSource; +} + +NS_IMETHODIMP +MouseEvent::GetMozInputSource(uint16_t* aInputSource) +{ + NS_ENSURE_ARG_POINTER(aInputSource); + *aInputSource = MozInputSource(); + return NS_OK; +} + +} // namespace dom +} // namespace mozilla + +using namespace mozilla; +using namespace mozilla::dom; + +already_AddRefed<MouseEvent> +NS_NewDOMMouseEvent(EventTarget* aOwner, + nsPresContext* aPresContext, + WidgetMouseEvent* aEvent) +{ + RefPtr<MouseEvent> it = new MouseEvent(aOwner, aPresContext, aEvent); + return it.forget(); +} |