1 files changed, 109 insertions, 0 deletions
diff --git a/dom/events/CompositionEvent.cpp b/dom/events/CompositionEvent.cpp
new file mode 100644
index 0000000000..826e420b55
--- /dev/null
+++ b/dom/events/CompositionEvent.cpp
@@ -0,0 +1,109 @@
+/* -*- 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/CompositionEvent.h"
+#include "mozilla/TextEvents.h"
+#include "prtime.h"
+
+namespace mozilla::dom {
+
+CompositionEvent::CompositionEvent(EventTarget* aOwner,
+                                   nsPresContext* aPresContext,
+                                   WidgetCompositionEvent* aEvent)
+    : UIEvent(aOwner, aPresContext,
+              aEvent ? aEvent
+                     : new WidgetCompositionEvent(false, eVoidEvent, nullptr)) {
+  NS_ASSERTION(mEvent->mClass == eCompositionEventClass, "event type mismatch");
+
+  if (aEvent) {
+    mEventIsInternal = false;
+  } else {
+    mEventIsInternal = true;
+    mEvent->mTime = PR_Now();
+
+    // XXX compositionstart is cancelable in draft of DOM3 Events.
+    //     However, it doesn't make sence for us, we cannot cancel composition
+    //     when we sends compositionstart event.
+    mEvent->mFlags.mCancelable = false;
+  }
+
+  // XXX Do we really need to duplicate the data value?
+  mData = mEvent->AsCompositionEvent()->mData;
+  // TODO: Native event should have locale information.
+}
+
+// static
+already_AddRefed<CompositionEvent> CompositionEvent::Constructor(
+    const GlobalObject& aGlobal, const nsAString& aType,
+    const CompositionEventInit& aParam) {
+  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
+  RefPtr<CompositionEvent> e = new CompositionEvent(t, nullptr, nullptr);
+  bool trusted = e->Init(t);
+  e->InitCompositionEvent(aType, aParam.mBubbles, aParam.mCancelable,
+                          aParam.mView, aParam.mData, u""_ns);
+  e->mDetail = aParam.mDetail;
+  e->SetTrusted(trusted);
+  e->SetComposed(aParam.mComposed);
+  return e.forget();
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(CompositionEvent, UIEvent, mRanges)
+
+NS_IMPL_ADDREF_INHERITED(CompositionEvent, UIEvent)
+NS_IMPL_RELEASE_INHERITED(CompositionEvent, UIEvent)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CompositionEvent)
+NS_INTERFACE_MAP_END_INHERITING(UIEvent)
+
+void CompositionEvent::GetData(nsAString& aData) const { aData = mData; }
+
+void CompositionEvent::GetLocale(nsAString& aLocale) const {
+  aLocale = mLocale;
+}
+
+void CompositionEvent::InitCompositionEvent(const nsAString& aType,
+                                            bool aCanBubble, bool aCancelable,
+                                            nsGlobalWindowInner* aView,
+                                            const nsAString& aData,
+                                            const nsAString& aLocale) {
+  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
+
+  UIEvent::InitUIEvent(aType, aCanBubble, aCancelable, aView, 0);
+  mData = aData;
+  mLocale = aLocale;
+}
+
+void CompositionEvent::GetRanges(TextClauseArray& aRanges) {
+  // If the mRanges is not empty, we return the cached value.
+  if (!mRanges.IsEmpty()) {
+    aRanges = mRanges.Clone();
+    return;
+  }
+  RefPtr<TextRangeArray> textRangeArray = mEvent->AsCompositionEvent()->mRanges;
+  if (!textRangeArray) {
+    return;
+  }
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(mOwner);
+  const TextRange* targetRange = textRangeArray->GetTargetClause();
+  for (size_t i = 0; i < textRangeArray->Length(); i++) {
+    const TextRange& range = textRangeArray->ElementAt(i);
+    mRanges.AppendElement(new TextClause(window, range, targetRange));
+  }
+  aRanges = mRanges.Clone();
+}
+
+}  // namespace mozilla::dom
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+already_AddRefed<CompositionEvent> NS_NewDOMCompositionEvent(
+    EventTarget* aOwner, nsPresContext* aPresContext,
+    WidgetCompositionEvent* aEvent) {
+  RefPtr<CompositionEvent> event =
+      new CompositionEvent(aOwner, aPresContext, aEvent);
+  return event.forget();
+}