michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "base/basictypes.h"
michael@0: #include "ipc/IPCMessageUtils.h"
michael@0: #include "mozilla/dom/UIEvent.h"
michael@0: #include "mozilla/ArrayUtils.h"
michael@0: #include "mozilla/Assertions.h"
michael@0: #include "mozilla/ContentEvents.h"
michael@0: #include "mozilla/EventStateManager.h"
michael@0: #include "mozilla/TextEvents.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "nsIContent.h"
michael@0: #include "nsIInterfaceRequestorUtils.h"
michael@0: #include "nsIDOMWindow.h"
michael@0: #include "nsIDOMNode.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "prtime.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: UIEvent::UIEvent(EventTarget* aOwner,
michael@0:                  nsPresContext* aPresContext,
michael@0:                  WidgetGUIEvent* aEvent)
michael@0:   : Event(aOwner, aPresContext,
michael@0:           aEvent ? aEvent : new InternalUIEvent(false, 0))
michael@0:   , mClientPoint(0, 0)
michael@0:   , mLayerPoint(0, 0)
michael@0:   , mPagePoint(0, 0)
michael@0:   , mMovementPoint(0, 0)
michael@0:   , mIsPointerLocked(EventStateManager::sIsPointerLocked)
michael@0:   , mLastClientPoint(EventStateManager::sLastClientPoint)
michael@0: {
michael@0:   if (aEvent) {
michael@0:     mEventIsInternal = false;
michael@0:   }
michael@0:   else {
michael@0:     mEventIsInternal = true;
michael@0:     mEvent->time = PR_Now();
michael@0:   }
michael@0:   
michael@0:   // Fill mDetail and mView according to the mEvent (widget-generated
michael@0:   // event) we've got
michael@0:   switch(mEvent->eventStructType)
michael@0:   {
michael@0:     case NS_UI_EVENT:
michael@0:     {
michael@0:       mDetail = mEvent->AsUIEvent()->detail;
michael@0:       break;
michael@0:     }
michael@0: 
michael@0:     case NS_SCROLLPORT_EVENT:
michael@0:     {
michael@0:       InternalScrollPortEvent* scrollEvent = mEvent->AsScrollPortEvent();
michael@0:       mDetail = (int32_t)scrollEvent->orient;
michael@0:       break;
michael@0:     }
michael@0: 
michael@0:     default:
michael@0:       mDetail = 0;
michael@0:       break;
michael@0:   }
michael@0: 
michael@0:   mView = nullptr;
michael@0:   if (mPresContext)
michael@0:   {
michael@0:     nsISupports* container = mPresContext->GetContainerWeak();
michael@0:     if (container)
michael@0:     {
michael@0:        nsCOMPtr<nsIDOMWindow> window = do_GetInterface(container);
michael@0:        if (window)
michael@0:           mView = do_QueryInterface(window);
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: // static
michael@0: already_AddRefed<UIEvent>
michael@0: UIEvent::Constructor(const GlobalObject& aGlobal,
michael@0:                      const nsAString& aType,
michael@0:                      const UIEventInit& aParam,
michael@0:                      ErrorResult& aRv)
michael@0: {
michael@0:   nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
michael@0:   nsRefPtr<UIEvent> e = new UIEvent(t, nullptr, nullptr);
michael@0:   bool trusted = e->Init(t);
michael@0:   aRv = e->InitUIEvent(aType, aParam.mBubbles, aParam.mCancelable, aParam.mView,
michael@0:                        aParam.mDetail);
michael@0:   e->SetTrusted(trusted);
michael@0:   return e.forget();
michael@0: }
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_INHERITED(UIEvent, Event,
michael@0:                                    mView)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(UIEvent, Event)
michael@0: NS_IMPL_RELEASE_INHERITED(UIEvent, Event)
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(UIEvent)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIDOMUIEvent)
michael@0: NS_INTERFACE_MAP_END_INHERITING(Event)
michael@0: 
michael@0: static nsIntPoint
michael@0: DevPixelsToCSSPixels(const LayoutDeviceIntPoint& aPoint,
michael@0:                      nsPresContext* aContext)
michael@0: {
michael@0:   return nsIntPoint(aContext->DevPixelsToIntCSSPixels(aPoint.x),
michael@0:                     aContext->DevPixelsToIntCSSPixels(aPoint.y));
michael@0: }
michael@0: 
michael@0: nsIntPoint
michael@0: UIEvent::GetMovementPoint()
michael@0: {
michael@0:   if (mPrivateDataDuplicated) {
michael@0:     return mMovementPoint;
michael@0:   }
michael@0: 
michael@0:   if (!mEvent ||
michael@0:       (mEvent->eventStructType != NS_MOUSE_EVENT &&
michael@0:        mEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
michael@0:        mEvent->eventStructType != NS_WHEEL_EVENT &&
michael@0:        mEvent->eventStructType != NS_DRAG_EVENT &&
michael@0:        mEvent->eventStructType != NS_POINTER_EVENT &&
michael@0:        mEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT) ||
michael@0:        !mEvent->AsGUIEvent()->widget) {
michael@0:     return nsIntPoint(0, 0);
michael@0:   }
michael@0: 
michael@0:   // Calculate the delta between the last screen point and the current one.
michael@0:   nsIntPoint current = DevPixelsToCSSPixels(mEvent->refPoint, mPresContext);
michael@0:   nsIntPoint last = DevPixelsToCSSPixels(mEvent->lastRefPoint, mPresContext);
michael@0:   return current - last;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetView(nsIDOMWindow** aView)
michael@0: {
michael@0:   *aView = mView;
michael@0:   NS_IF_ADDREF(*aView);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetDetail(int32_t* aDetail)
michael@0: {
michael@0:   *aDetail = mDetail;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::InitUIEvent(const nsAString& typeArg,
michael@0:                      bool canBubbleArg,
michael@0:                      bool cancelableArg,
michael@0:                      nsIDOMWindow* viewArg,
michael@0:                      int32_t detailArg)
michael@0: {
michael@0:   if (viewArg) {
michael@0:     nsCOMPtr<nsPIDOMWindow> view = do_QueryInterface(viewArg);
michael@0:     NS_ENSURE_TRUE(view, NS_ERROR_INVALID_ARG);
michael@0:   }
michael@0:   nsresult rv = Event::InitEvent(typeArg, canBubbleArg, cancelableArg);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0:   
michael@0:   mDetail = detailArg;
michael@0:   mView = viewArg;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetPageX(int32_t* aPageX)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aPageX);
michael@0:   *aPageX = PageX();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: UIEvent::PageX() const
michael@0: {
michael@0:   if (mPrivateDataDuplicated) {
michael@0:     return mPagePoint.x;
michael@0:   }
michael@0: 
michael@0:   return Event::GetPageCoords(mPresContext, mEvent, mEvent->refPoint,
michael@0:                               mClientPoint).x;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetPageY(int32_t* aPageY)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aPageY);
michael@0:   *aPageY = PageY();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: UIEvent::PageY() const
michael@0: {
michael@0:   if (mPrivateDataDuplicated) {
michael@0:     return mPagePoint.y;
michael@0:   }
michael@0: 
michael@0:   return Event::GetPageCoords(mPresContext, mEvent, mEvent->refPoint,
michael@0:                               mClientPoint).y;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetWhich(uint32_t* aWhich)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aWhich);
michael@0:   *aWhich = Which();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsINode>
michael@0: UIEvent::GetRangeParent()
michael@0: {
michael@0:   nsIFrame* targetFrame = nullptr;
michael@0: 
michael@0:   if (mPresContext) {
michael@0:     targetFrame = mPresContext->EventStateManager()->GetEventTarget();
michael@0:   }
michael@0: 
michael@0:   if (targetFrame) {
michael@0:     nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(mEvent,
michael@0:                                                               targetFrame);
michael@0:     nsCOMPtr<nsIContent> parent = targetFrame->GetContentOffsetsFromPoint(pt).content;
michael@0:     if (parent) {
michael@0:       if (parent->ChromeOnlyAccess() &&
michael@0:           !nsContentUtils::CanAccessNativeAnon()) {
michael@0:         return nullptr;
michael@0:       }
michael@0:       return parent.forget();
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return nullptr;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetRangeParent(nsIDOMNode** aRangeParent)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aRangeParent);
michael@0:   *aRangeParent = nullptr;
michael@0:   nsCOMPtr<nsINode> n = GetRangeParent();
michael@0:   if (n) {
michael@0:     CallQueryInterface(n, aRangeParent);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetRangeOffset(int32_t* aRangeOffset)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aRangeOffset);
michael@0:   *aRangeOffset = RangeOffset();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: int32_t
michael@0: UIEvent::RangeOffset() const
michael@0: {
michael@0:   if (!mPresContext) {
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   nsIFrame* targetFrame = mPresContext->EventStateManager()->GetEventTarget();
michael@0:   if (!targetFrame) {
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(mEvent,
michael@0:                                                             targetFrame);
michael@0:   return targetFrame->GetContentOffsetsFromPoint(pt).offset;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetCancelBubble(bool* aCancelBubble)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aCancelBubble);
michael@0:   *aCancelBubble = CancelBubble();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::SetCancelBubble(bool aCancelBubble)
michael@0: {
michael@0:   mEvent->mFlags.mPropagationStopped = aCancelBubble;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsIntPoint
michael@0: UIEvent::GetLayerPoint() const
michael@0: {
michael@0:   if (!mEvent ||
michael@0:       (mEvent->eventStructType != NS_MOUSE_EVENT &&
michael@0:        mEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
michael@0:        mEvent->eventStructType != NS_WHEEL_EVENT &&
michael@0:        mEvent->eventStructType != NS_POINTER_EVENT &&
michael@0:        mEvent->eventStructType != NS_TOUCH_EVENT &&
michael@0:        mEvent->eventStructType != NS_DRAG_EVENT &&
michael@0:        mEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT) ||
michael@0:       !mPresContext ||
michael@0:       mEventIsInternal) {
michael@0:     return mLayerPoint;
michael@0:   }
michael@0:   // XXX I'm not really sure this is correct; it's my best shot, though
michael@0:   nsIFrame* targetFrame = mPresContext->EventStateManager()->GetEventTarget();
michael@0:   if (!targetFrame)
michael@0:     return mLayerPoint;
michael@0:   nsIFrame* layer = nsLayoutUtils::GetClosestLayer(targetFrame);
michael@0:   nsPoint pt(nsLayoutUtils::GetEventCoordinatesRelativeTo(mEvent, layer));
michael@0:   return nsIntPoint(nsPresContext::AppUnitsToIntCSSPixels(pt.x),
michael@0:                     nsPresContext::AppUnitsToIntCSSPixels(pt.y));
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetLayerX(int32_t* aLayerX)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aLayerX);
michael@0:   *aLayerX = GetLayerPoint().x;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetLayerY(int32_t* aLayerY)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aLayerY);
michael@0:   *aLayerY = GetLayerPoint().y;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::GetIsChar(bool* aIsChar)
michael@0: {
michael@0:   *aIsChar = IsChar();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: bool
michael@0: UIEvent::IsChar() const
michael@0: {
michael@0:   WidgetKeyboardEvent* keyEvent = mEvent->AsKeyboardEvent();
michael@0:   if (keyEvent) {
michael@0:     return keyEvent->isChar;
michael@0:   }
michael@0:   WidgetTextEvent* textEvent = mEvent->AsTextEvent();
michael@0:   return textEvent ? textEvent->isChar : false;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: UIEvent::DuplicatePrivateData()
michael@0: {
michael@0:   mClientPoint =
michael@0:     Event::GetClientCoords(mPresContext, mEvent, mEvent->refPoint,
michael@0:                            mClientPoint);
michael@0:   mMovementPoint = GetMovementPoint();
michael@0:   mLayerPoint = GetLayerPoint();
michael@0:   mPagePoint =
michael@0:     Event::GetPageCoords(mPresContext, mEvent, mEvent->refPoint, mClientPoint);
michael@0:   // GetScreenPoint converts mEvent->refPoint to right coordinates.
michael@0:   nsIntPoint screenPoint =
michael@0:     Event::GetScreenCoords(mPresContext, mEvent, mEvent->refPoint);
michael@0:   nsresult rv = Event::DuplicatePrivateData();
michael@0:   if (NS_SUCCEEDED(rv)) {
michael@0:     mEvent->refPoint = LayoutDeviceIntPoint::FromUntyped(screenPoint);
michael@0:   }
michael@0:   return rv;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP_(void)
michael@0: UIEvent::Serialize(IPC::Message* aMsg, bool aSerializeInterfaceType)
michael@0: {
michael@0:   if (aSerializeInterfaceType) {
michael@0:     IPC::WriteParam(aMsg, NS_LITERAL_STRING("uievent"));
michael@0:   }
michael@0: 
michael@0:   Event::Serialize(aMsg, false);
michael@0: 
michael@0:   int32_t detail = 0;
michael@0:   GetDetail(&detail);
michael@0:   IPC::WriteParam(aMsg, detail);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP_(bool)
michael@0: UIEvent::Deserialize(const IPC::Message* aMsg, void** aIter)
michael@0: {
michael@0:   NS_ENSURE_TRUE(Event::Deserialize(aMsg, aIter), false);
michael@0:   NS_ENSURE_TRUE(IPC::ReadParam(aMsg, aIter, &mDetail), false);
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: // XXX Following struct and array are used only in
michael@0: //     UIEvent::ComputeModifierState(), but if we define them in it,
michael@0: //     we fail to build on Mac at calling mozilla::ArrayLength().
michael@0: struct ModifierPair
michael@0: {
michael@0:   Modifier modifier;
michael@0:   const char* name;
michael@0: };
michael@0: static const ModifierPair kPairs[] = {
michael@0:   { MODIFIER_ALT,        NS_DOM_KEYNAME_ALT },
michael@0:   { MODIFIER_ALTGRAPH,   NS_DOM_KEYNAME_ALTGRAPH },
michael@0:   { MODIFIER_CAPSLOCK,   NS_DOM_KEYNAME_CAPSLOCK },
michael@0:   { MODIFIER_CONTROL,    NS_DOM_KEYNAME_CONTROL },
michael@0:   { MODIFIER_FN,         NS_DOM_KEYNAME_FN },
michael@0:   { MODIFIER_META,       NS_DOM_KEYNAME_META },
michael@0:   { MODIFIER_NUMLOCK,    NS_DOM_KEYNAME_NUMLOCK },
michael@0:   { MODIFIER_SCROLLLOCK, NS_DOM_KEYNAME_SCROLLLOCK },
michael@0:   { MODIFIER_SHIFT,      NS_DOM_KEYNAME_SHIFT },
michael@0:   { MODIFIER_SYMBOLLOCK, NS_DOM_KEYNAME_SYMBOLLOCK },
michael@0:   { MODIFIER_OS,         NS_DOM_KEYNAME_OS }
michael@0: };
michael@0: 
michael@0: // static
michael@0: Modifiers
michael@0: UIEvent::ComputeModifierState(const nsAString& aModifiersList)
michael@0: {
michael@0:   if (aModifiersList.IsEmpty()) {
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   // Be careful about the performance.  If aModifiersList is too long,
michael@0:   // parsing it needs too long time.
michael@0:   // XXX Should we abort if aModifiersList is too long?
michael@0: 
michael@0:   Modifiers modifiers = 0;
michael@0: 
michael@0:   nsAString::const_iterator listStart, listEnd;
michael@0:   aModifiersList.BeginReading(listStart);
michael@0:   aModifiersList.EndReading(listEnd);
michael@0: 
michael@0:   for (uint32_t i = 0; i < ArrayLength(kPairs); i++) {
michael@0:     nsAString::const_iterator start(listStart), end(listEnd);
michael@0:     if (!FindInReadable(NS_ConvertASCIItoUTF16(kPairs[i].name), start, end)) {
michael@0:       continue;
michael@0:     }
michael@0: 
michael@0:     if ((start != listStart && !NS_IsAsciiWhitespace(*(--start))) ||
michael@0:         (end != listEnd && !NS_IsAsciiWhitespace(*(end)))) {
michael@0:       continue;
michael@0:     }
michael@0:     modifiers |= kPairs[i].modifier;
michael@0:   }
michael@0: 
michael@0:   return modifiers;
michael@0: }
michael@0: 
michael@0: bool
michael@0: UIEvent::GetModifierStateInternal(const nsAString& aKey)
michael@0: {
michael@0:   WidgetInputEvent* inputEvent = mEvent->AsInputEvent();
michael@0:   MOZ_ASSERT(inputEvent, "mEvent must be WidgetInputEvent or derived class");
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_SHIFT)) {
michael@0:     return inputEvent->IsShift();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_CONTROL)) {
michael@0:     return inputEvent->IsControl();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_META)) {
michael@0:     return inputEvent->IsMeta();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_ALT)) {
michael@0:     return inputEvent->IsAlt();
michael@0:   }
michael@0: 
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_ALTGRAPH)) {
michael@0:     return inputEvent->IsAltGraph();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_OS)) {
michael@0:     return inputEvent->IsOS();
michael@0:   }
michael@0: 
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_CAPSLOCK)) {
michael@0:     return inputEvent->IsCapsLocked();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_NUMLOCK)) {
michael@0:     return inputEvent->IsNumLocked();
michael@0:   }
michael@0: 
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_FN)) {
michael@0:     return inputEvent->IsFn();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_SCROLLLOCK)) {
michael@0:     return inputEvent->IsScrollLocked();
michael@0:   }
michael@0:   if (aKey.EqualsLiteral(NS_DOM_KEYNAME_SYMBOLLOCK)) {
michael@0:     return inputEvent->IsSymbolLocked();
michael@0:   }
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: nsresult
michael@0: NS_NewDOMUIEvent(nsIDOMEvent** aInstancePtrResult,
michael@0:                  EventTarget* aOwner,
michael@0:                  nsPresContext* aPresContext,
michael@0:                  WidgetGUIEvent* aEvent) 
michael@0: {
michael@0:   UIEvent* it = new UIEvent(aOwner, aPresContext, aEvent);
michael@0:   NS_ADDREF(it);
michael@0:   *aInstancePtrResult = static_cast<Event*>(it);
michael@0:   return NS_OK;
michael@0: }