tor-browser

The Tor Browser
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CommandEvent.cpp (3393B)

      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/CommandEvent.h"
      8 
      9 #include "mozilla/MiscEvents.h"
     10 #include "mozilla/StaticPrefs_dom.h"
     11 #include "nsContentUtils.h"
     12 #include "prtime.h"
     13 
     14 namespace mozilla::dom {
     15 
     16 NS_IMPL_CYCLE_COLLECTION_CLASS(CommandEvent)
     17 
     18 NS_IMPL_ADDREF_INHERITED(CommandEvent, Event)
     19 NS_IMPL_RELEASE_INHERITED(CommandEvent, Event)
     20 
     21 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CommandEvent, Event)
     22  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSource)
     23 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
     24 
     25 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CommandEvent, Event)
     26 NS_IMPL_CYCLE_COLLECTION_TRACE_END
     27 
     28 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CommandEvent, Event)
     29  NS_IMPL_CYCLE_COLLECTION_UNLINK(mSource)
     30 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
     31 
     32 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CommandEvent)
     33 NS_INTERFACE_MAP_END_INHERITING(Event)
     34 
     35 bool CommandEvent::IsCallerChromeOrCommandForEnabled(JSContext* aCx,
     36                                                     JSObject* aGlobal) {
     37  return nsContentUtils::ThreadsafeIsSystemCaller(aCx) ||
     38         StaticPrefs::dom_element_commandfor_enabled();
     39 }
     40 
     41 already_AddRefed<CommandEvent> CommandEvent::Constructor(
     42    const GlobalObject& aGlobal, const nsAString& aType,
     43    const CommandEventInit& aEventInitDict) {
     44  nsCOMPtr<mozilla::dom::EventTarget> owner =
     45      do_QueryInterface(aGlobal.GetAsSupports());
     46  return Constructor(owner, aType, aEventInitDict);
     47 }
     48 
     49 already_AddRefed<CommandEvent> CommandEvent::Constructor(
     50    mozilla::dom::EventTarget* aOwner, const nsAString& aType,
     51    const CommandEventInit& aEventInitDict) {
     52  RefPtr<CommandEvent> e = new CommandEvent(aOwner, nullptr, nullptr);
     53  bool trusted = e->Init(aOwner);
     54  e->InitEvent(aType, aEventInitDict.mBubbles, aEventInitDict.mCancelable);
     55  e->mEvent->AsCommandEvent()->mCommand = NS_Atomize(aEventInitDict.mCommand);
     56  e->mSource = aEventInitDict.mSource;
     57  e->SetTrusted(trusted);
     58  e->SetComposed(aEventInitDict.mComposed);
     59  return e.forget();
     60 }
     61 
     62 CommandEvent::CommandEvent(EventTarget* aOwner, nsPresContext* aPresContext,
     63                           WidgetCommandEvent* aEvent)
     64    : Event(aOwner, aPresContext, aEvent ? aEvent : new WidgetCommandEvent()) {
     65  if (aEvent) {
     66    mEventIsInternal = false;
     67  } else {
     68    mEventIsInternal = true;
     69  }
     70 }
     71 
     72 void CommandEvent::GetCommand(nsAString& aCommand) const {
     73  nsAtom* command = mEvent->AsCommandEvent()->mCommand;
     74  if (command) {
     75    command->ToString(aCommand);
     76  } else {
     77    aCommand.Truncate();
     78  }
     79 }
     80 
     81 Element* CommandEvent::GetSource() {
     82  EventTarget* currentTarget = GetCurrentTarget();
     83  nsINode* retargeted = nsContentUtils::Retarget(
     84      mSource, currentTarget ? currentTarget->GetAsNode() : nullptr);
     85  return retargeted ? retargeted->AsElement() : nullptr;
     86 }
     87 
     88 }  // namespace mozilla::dom
     89 
     90 using namespace mozilla;
     91 using namespace mozilla::dom;
     92 
     93 already_AddRefed<CommandEvent> NS_NewDOMCommandEvent(
     94    EventTarget* aOwner, nsPresContext* aPresContext,
     95    WidgetCommandEvent* aEvent) {
     96  RefPtr<CommandEvent> it = new CommandEvent(aOwner, aPresContext, aEvent);
     97  return it.forget();
     98 }