C++ nsTArray::Contains方法代码示例

NS_IMETHODIMP
PresentationService::ReconnectSession(const nsTArray<nsString>& aUrls,
                                      const nsAString& aSessionId,
                                      uint8_t aRole,
                                      nsIPresentationServiceCallback* aCallback)
{
  PRES_DEBUG("%s:id[%s]\n", __func__, NS_ConvertUTF16toUTF8(aSessionId).get());

  MOZ_ASSERT(NS_IsMainThread());
  MOZ_ASSERT(!aSessionId.IsEmpty());
  MOZ_ASSERT(aCallback);
  MOZ_ASSERT(!aUrls.IsEmpty());

  if (aRole != nsIPresentationService::ROLE_CONTROLLER) {
    MOZ_ASSERT(false, "Only controller can call ReconnectSession.");
    return NS_ERROR_INVALID_ARG;
  }

  if (NS_WARN_IF(!aCallback)) {
    return NS_ERROR_INVALID_ARG;
  }

  RefPtr<PresentationSessionInfo> info = GetSessionInfo(aSessionId, aRole);
  if (NS_WARN_IF(!info)) {
    return aCallback->NotifyError(NS_ERROR_DOM_NOT_FOUND_ERR);
  }

  if (NS_WARN_IF(!aUrls.Contains(info->GetUrl()))) {
    return aCallback->NotifyError(NS_ERROR_DOM_NOT_FOUND_ERR);
  }

  return static_cast<PresentationControllingInfo*>(info.get())->Reconnect(aCallback);
}

nsresult
gfxFontconfigUtils::GetFontListInternal(nsTArray<nsCString>& aListOfFonts,
                                        nsIAtom *aLangGroup)
{
    FcPattern *pat = nullptr;
    FcObjectSet *os = nullptr;
    FcFontSet *fs = nullptr;
    nsresult rv = NS_ERROR_FAILURE;

    aListOfFonts.Clear();

    pat = FcPatternCreate();
    if (!pat)
        goto end;

    os = FcObjectSetBuild(FC_FAMILY, nullptr);
    if (!os)
        goto end;

    // take the pattern and add the lang group to it
    if (aLangGroup) {
        AddLangGroup(pat, aLangGroup);
    }

    fs = FcFontList(nullptr, pat, os);
    if (!fs)
        goto end;

    for (int i = 0; i < fs->nfont; i++) {
        char *family;

        if (FcPatternGetString(fs->fonts[i], FC_FAMILY, 0,
                               (FcChar8 **) &family) != FcResultMatch)
        {
            continue;
        }

        // Remove duplicates...
        nsAutoCString strFamily(family);
        if (aListOfFonts.Contains(strFamily))
            continue;

        aListOfFonts.AppendElement(strFamily);
    }

    rv = NS_OK;

end:
    if (NS_FAILED(rv))
        aListOfFonts.Clear();

    if (pat)
        FcPatternDestroy(pat);
    if (os)
        FcObjectSetDestroy(os);
    if (fs)
        FcFontSetDestroy(fs);

    return rv;
}

void
DBusWatcher::HandleWatchAdd()
{
  int fd;
  ssize_t res = TEMP_FAILURE_RETRY(read(mControlFdR.get(), &fd, sizeof(fd)));
  if (res < 0) {
    LOG("Cannot read DBus watch add descriptor data from socket!\n");
    return;
  }

  unsigned int flags;
  res = TEMP_FAILURE_RETRY(read(mControlFdR.get(), &flags, sizeof(flags)));
  if (res < 0) {
    LOG("Cannot read DBus watch add flag data from socket!\n");
    return;
  }

  DBusWatch* watch;
  res = TEMP_FAILURE_RETRY(read(mControlFdR.get(), &watch, sizeof(watch)));
  if (res < 0) {
    LOG("Cannot read DBus watch add watch data from socket!\n");
    return;
  }

  struct pollfd p = {
    fd, // .fd
    DBusFlagsToUnixEvents(flags), // .events
    0 // .revents
  };
  if (mPollData.Contains(p, PollFdComparator())) {
    return;
  }
  mPollData.AppendElement(p);
  mWatchData.AppendElement(watch);
}

static void
AssertPresShellsAndContextsSane(nsPrintObject* aPO,
                                nsTArray<nsIPresShell*>& aPresShells,
                                nsTArray<nsPresContext*>& aPresContexts)
{
  if (aPO->mPresShell) {
    if (aPresShells.Contains(aPO->mPresShell)) {
      ASSERT_AND_NOTE("duplicate pres shells in print object tree");
    } else {
      aPresShells.AppendElement(aPO->mPresShell);
    }
  }
  if (aPO->mPresContext) {
    if (aPresContexts.Contains(aPO->mPresContext)) {
      ASSERT_AND_NOTE("duplicate pres contexts in print object tree");
    } else {
      aPresContexts.AppendElement(aPO->mPresContext);
    }
  }
  if (aPO->mPresShell && !aPO->mPresContext) {
    ASSERT_AND_NOTE("print object has pres shell but no pres context");
  }
  if (!aPO->mPresShell && aPO->mPresContext) {
    ASSERT_AND_NOTE("print object has pres context but no pres shell");
  }
  if (aPO->mPresContext && aPO->mPresContext->GetPresShell() != aPO->mPresShell) {
    ASSERT_AND_NOTE("print object has mismatching pres shell and pres context");
  }
  if (aPO->mPresContext && !aPO->mPresContext->GetPresShell()) {
    ASSERT_AND_NOTE("mPresShell->GetPresShell() is null");
  }

  for (uint32_t i = 0; i < aPO->mKids.Length(); i++) {
    AssertPresShellsAndContextsSane(aPO->mKids[i], aPresShells, aPresContexts);
  }
}

NS_IMETHODIMP
PresentationAvailability::NotifyAvailableChange(
    const nsTArray<nsString>& aAvailabilityUrls, bool aIsAvailable) {
  bool available = false;
  for (uint32_t i = 0; i < mUrls.Length(); ++i) {
    if (aAvailabilityUrls.Contains(mUrls[i])) {
      mAvailabilityOfUrl[i] = aIsAvailable;
    }
    available |= mAvailabilityOfUrl[i];
  }

  return NS_DispatchToCurrentThread(NewRunnableMethod<bool>(
      "dom::PresentationAvailability::UpdateAvailabilityAndDispatchEvent", this,
      &PresentationAvailability::UpdateAvailabilityAndDispatchEvent,
      available));
}

void
nsDOMTokenList::RemoveInternal(const nsAttrValue* aAttr,
                               const nsTArray<nsString>& aTokens)
{
  MOZ_ASSERT(aAttr, "Need an attribute");

  nsAutoString input;
  aAttr->ToString(input);

  nsAString::const_iterator copyStart, tokenStart, iter, end;
  input.BeginReading(iter);
  input.EndReading(end);
  copyStart = iter;

  nsAutoString output;
  bool lastTokenRemoved = false;

  while (iter != end) {
    // skip whitespace.
    while (iter != end && nsContentUtils::IsHTMLWhitespace(*iter)) {
      ++iter;
    }

    if (iter == end) {
      // At this point we're sure the last seen token (if any) wasn't to be
      // removed. So the trailing spaces will need to be kept.
      MOZ_ASSERT(!lastTokenRemoved, "How did this happen?");

      output.Append(Substring(copyStart, end));
      break;
    }

    tokenStart = iter;
    do {
      ++iter;
    } while (iter != end && !nsContentUtils::IsHTMLWhitespace(*iter));

    if (aTokens.Contains(Substring(tokenStart, iter))) {

      // Skip whitespace after the token, it will be collapsed.
      while (iter != end && nsContentUtils::IsHTMLWhitespace(*iter)) {
        ++iter;
      }
      copyStart = iter;
      lastTokenRemoved = true;

    } else {

      if (lastTokenRemoved && !output.IsEmpty()) {
        MOZ_ASSERT(!nsContentUtils::IsHTMLWhitespace(output.Last()),
                   "Invalid last output token");
        output.Append(char16_t(' '));
      }
      lastTokenRemoved = false;
      output.Append(Substring(copyStart, iter));
      copyStart = iter;
    }
  }

  mElement->SetAttr(kNameSpaceID_None, mAttrAtom, output, true);
}

uint32_t
GridLines::AppendRemovedAutoFits(const ComputedGridTrackInfo* aTrackInfo,
                                 const ComputedGridLineInfo* aLineInfo,
                                 nscoord aLastTrackEdge,
                                 uint32_t& aRepeatIndex,
                                 uint32_t aNumRepeatTracks,
                                 nsTArray<nsString>& aLineNames)
{
  // Check to see if lineNames contains ALL of the before line names.
  bool alreadyHasBeforeLineNames = true;
  for (const auto& beforeName : aLineInfo->mNamesBefore) {
    if (!aLineNames.Contains(beforeName)) {
      alreadyHasBeforeLineNames = false;
      break;
    }
  }

  bool extractedExplicitLineNames = false;
  nsTArray<nsString> explicitLineNames;
  uint32_t linesAdded = 0;
  while (aRepeatIndex < aNumRepeatTracks &&
         aTrackInfo->mRemovedRepeatTracks[aRepeatIndex]) {
    // If this is not the very first call to this function, and if we
    // haven't already added a line this call, pull all the explicit
    // names to pass along to the next line that will be added after
    // this function completes.
    if (aRepeatIndex > 0 &&
        linesAdded == 0) {
      // Find the names that didn't match the before or after names,
      // and extract them.
      for (const auto& name : aLineNames) {
        if (!aLineInfo->mNamesBefore.Contains(name) &&
            !aLineInfo->mNamesAfter.Contains(name)) {
          explicitLineNames.AppendElement(name);
        }
      }
      for (const auto& extractedName : explicitLineNames) {
        aLineNames.RemoveElement(extractedName);
      }
      extractedExplicitLineNames = true;
    }

    // If this is the second or later time through, or didn't already
    // have before names, add them.
    if (linesAdded > 0 || !alreadyHasBeforeLineNames) {
      aLineNames.AppendElements(aLineInfo->mNamesBefore);
    }

    RefPtr<GridLine> line = new GridLine(this);
    mLines.AppendElement(line);
    line->SetLineValues(
      aLineNames,
      nsPresContext::AppUnitsToDoubleCSSPixels(aLastTrackEdge),
      nsPresContext::AppUnitsToDoubleCSSPixels(0),
      aTrackInfo->mRepeatFirstTrack + aRepeatIndex + 1,
      GridDeclaration::Explicit
    );

    // No matter what, the next line should have the after names associated
    // with it. If we go through the loop again, the before names will also
    // be added.
    aLineNames = aLineInfo->mNamesAfter;
    aRepeatIndex++;

    linesAdded++;
  }
  aRepeatIndex++;

  if (extractedExplicitLineNames) {
    // Pass on the explicit names we saved to the next explicit line.
    aLineNames.AppendElements(explicitLineNames);
  }

  if (alreadyHasBeforeLineNames && linesAdded > 0) {
    // If we started with before names, pass them on to the next explicit
    // line.
    aLineNames.AppendElements(aLineInfo->mNamesBefore);
  }
  return linesAdded;
}