dom/events/CompositionEvent.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/CompositionEvent.h"
   8 #include "mozilla/TextEvents.h"
   9 #include "prtime.h"
  10
  11 namespace mozilla::dom {
  12
  13 CompositionEvent::CompositionEvent(EventTarget* aOwner,
  14                                    nsPresContext* aPresContext,
  15                                    WidgetCompositionEvent* aEvent)
  16     : UIEvent(aOwner, aPresContext,
  17               aEvent ? aEvent
  18                      : new WidgetCompositionEvent(false, eVoidEvent, nullptr)) {
  19   NS_ASSERTION(mEvent->mClass == eCompositionEventClass, "event type mismatch");
  20
  21   if (aEvent) {
  22     mEventIsInternal = false;
  23   } else {
  24     mEventIsInternal = true;
  25
  26     // XXX compositionstart is cancelable in draft of DOM3 Events.
  27     //     However, it doesn't make sence for us, we cannot cancel composition
  28     //     when we sends compositionstart event.
  29     mEvent->mFlags.mCancelable = false;
  30   }
  31
  32   // XXX Do we really need to duplicate the data value?
  33   mData = mEvent->AsCompositionEvent()->mData;
  34   // TODO: Native event should have locale information.
  35 }
  36
  37 // static
  38 already_AddRefed<CompositionEvent> CompositionEvent::Constructor(
  39     const GlobalObject& aGlobal, const nsAString& aType,
  40     const CompositionEventInit& aParam) {
  41   nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
  42   RefPtr<CompositionEvent> e = new CompositionEvent(t, nullptr, nullptr);
  43   bool trusted = e->Init(t);
  44   e->InitCompositionEvent(aType, aParam.mBubbles, aParam.mCancelable,
  45                           aParam.mView, aParam.mData, u""_ns);
  46   e->mDetail = aParam.mDetail;
  47   e->SetTrusted(trusted);
  48   e->SetComposed(aParam.mComposed);
  49   return e.forget();
  50 }
  51
  52 NS_IMPL_CYCLE_COLLECTION_INHERITED(CompositionEvent, UIEvent, mRanges)
  53
  54 NS_IMPL_ADDREF_INHERITED(CompositionEvent, UIEvent)
  55 NS_IMPL_RELEASE_INHERITED(CompositionEvent, UIEvent)
  56
  57 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CompositionEvent)
  58 NS_INTERFACE_MAP_END_INHERITING(UIEvent)
  59
  60 void CompositionEvent::GetData(nsAString& aData) const { aData = mData; }
  61
  62 void CompositionEvent::GetLocale(nsAString& aLocale) const {
  63   aLocale = mLocale;
  64 }
  65
  66 void CompositionEvent::InitCompositionEvent(const nsAString& aType,
  67                                             bool aCanBubble, bool aCancelable,
  68                                             nsGlobalWindowInner* aView,
  69                                             const nsAString& aData,
  70                                             const nsAString& aLocale) {
  71   NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
  72
  73   UIEvent::InitUIEvent(aType, aCanBubble, aCancelable, aView, 0);
  74   mData = aData;
  75   mLocale = aLocale;
  76 }
  77
  78 void CompositionEvent::GetRanges(TextClauseArray& aRanges) {
  79   // If the mRanges is not empty, we return the cached value.
  80   if (!mRanges.IsEmpty()) {
  81     aRanges = mRanges.Clone();
  82     return;
  83   }
  84   RefPtr<TextRangeArray> textRangeArray = mEvent->AsCompositionEvent()->mRanges;
  85   if (!textRangeArray) {
  86     return;
  87   }
  88   nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(mOwner);
  89   const TextRange* targetRange = textRangeArray->GetTargetClause();
  90   for (size_t i = 0; i < textRangeArray->Length(); i++) {
  91     const TextRange& range = textRangeArray->ElementAt(i);
  92     mRanges.AppendElement(new TextClause(window, range, targetRange));
  93   }
  94   aRanges = mRanges.Clone();
  95 }
  96
  97 }  // namespace mozilla::dom
  98
  99 using namespace mozilla;
 100 using namespace mozilla::dom;
 101
 102 already_AddRefed<CompositionEvent> NS_NewDOMCompositionEvent(
 103     EventTarget* aOwner, nsPresContext* aPresContext,
 104     WidgetCompositionEvent* aEvent) {
 105   RefPtr<CompositionEvent> event =
 106       new CompositionEvent(aOwner, aPresContext, aEvent);
 107   return event.forget();
 108 }