tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

TextEvent.cpp (2461B)

      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/TextEvent.h"
      8 
      9 #include "mozilla/BasePrincipal.h"  // for nsIPrincipal::IsSystemPrincipal()
     10 #include "mozilla/EventForwards.h"
     11 #include "mozilla/TextEvents.h"
     12 #include "mozilla/dom/DataTransfer.h"
     13 #include "nsGlobalWindowInner.h"
     14 #include "nsIPrincipal.h"
     15 #include "nsPresContext.h"
     16 
     17 namespace mozilla::dom {
     18 
     19 TextEvent::TextEvent(EventTarget* aOwner, nsPresContext* aPresContext,
     20                     InternalLegacyTextEvent* aEvent)
     21    : UIEvent(aOwner, aPresContext,
     22              aEvent
     23                  ? aEvent
     24                  : new InternalLegacyTextEvent(false, eVoidEvent, nullptr)) {
     25  NS_ASSERTION(mEvent->mClass == eLegacyTextEventClass, "event type mismatch");
     26  mEventIsInternal = !aEvent;
     27 }
     28 
     29 void TextEvent::InitTextEvent(const nsAString& typeArg, bool canBubbleArg,
     30                              bool cancelableArg, nsGlobalWindowInner* viewArg,
     31                              const nsAString& dataArg) {
     32  if (NS_WARN_IF(mEvent->mFlags.mIsBeingDispatched)) {
     33    return;
     34  }
     35 
     36  UIEvent::InitUIEvent(typeArg, canBubbleArg, cancelableArg, viewArg, 0);
     37 
     38  static_cast<InternalLegacyTextEvent*>(mEvent)->mData = dataArg;
     39 }
     40 
     41 void TextEvent::GetData(nsAString& aData,
     42                        nsIPrincipal& aSubjectPrincipal) const {
     43  InternalLegacyTextEvent* textEvent = mEvent->AsLegacyTextEvent();
     44  MOZ_ASSERT(textEvent);
     45  if (mEvent->IsTrusted() && !aSubjectPrincipal.IsSystemPrincipal() &&
     46      !StaticPrefs::dom_event_clipboardevents_enabled() &&
     47      ExposesClipboardDataOrDataTransfer(textEvent->mInputType)) {
     48    aData.Truncate();
     49    return;
     50  }
     51  if (!textEvent->mDataTransfer) {
     52    aData = textEvent->mData;
     53    return;
     54  }
     55  textEvent->mDataTransfer->GetData(u"text/plain"_ns, aData, aSubjectPrincipal,
     56                                    IgnoreErrors());
     57 }
     58 
     59 }  // namespace mozilla::dom
     60 
     61 using namespace mozilla;
     62 using namespace mozilla::dom;
     63 
     64 already_AddRefed<TextEvent> NS_NewDOMTextEvent(
     65    EventTarget* aOwner, nsPresContext* aPresContext,
     66    InternalLegacyTextEvent* aEvent) {
     67  RefPtr<TextEvent> it = new TextEvent(aOwner, aPresContext, aEvent);
     68  return it.forget();
     69 }