C++ nsTArray::AppendElement方法代码示例

void
gfxPlatformMac::GetCommonFallbackFonts(const uint32_t aCh,
                                       int32_t aRunScript,
                                       nsTArray<const char*>& aFontList)
{
    aFontList.AppendElement(kFontLucidaGrande);

    if (!IS_IN_BMP(aCh)) {
        uint32_t p = aCh >> 16;
        uint32_t b = aCh >> 8;
        if (p == 1) {
            if (b >= 0x1f0 && b < 0x1f7) {
                aFontList.AppendElement(kFontAppleColorEmoji);
            } else {
                aFontList.AppendElement(kFontAppleSymbols);
                aFontList.AppendElement(kFontSTIXGeneral);
                aFontList.AppendElement(kFontGeneva);
            }
        } else if (p == 2) {
            // OSX installations with MS Office may have these fonts
            aFontList.AppendElement(kFontMingLiUExtB);
            aFontList.AppendElement(kFontSimSunExtB);
        }
    } else {

void
gfxPlatformGtk::GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
                                       Script aRunScript,
                                       nsTArray<const char*>& aFontList)
{
    if (aNextCh == 0xfe0fu) {
      // if char is followed by VS16, try for a color emoji glyph
      aFontList.AppendElement(kFontEmojiOneMozilla);
    }

    aFontList.AppendElement(kFontDejaVuSerif);
    aFontList.AppendElement(kFontFreeSerif);
    aFontList.AppendElement(kFontDejaVuSans);
    aFontList.AppendElement(kFontFreeSans);

    if (!IS_IN_BMP(aCh)) {
        uint32_t p = aCh >> 16;
        if (p == 1) { // try color emoji font, unless VS15 (text style) present
            if (aNextCh != 0xfe0fu && aNextCh != 0xfe0eu) {
                aFontList.AppendElement(kFontEmojiOneMozilla);
            }
        }
    }

void
nsCanvasFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements, uint32_t aFilter)
{
  aElements.AppendElement(mCustomContentContainer);
}

nsresult
nsSVGFilterInstance::BuildPrimitives(nsTArray<FilterPrimitiveDescription>& aPrimitiveDescrs,
                                     nsTArray<RefPtr<SourceSurface>>& aInputImages,
                                     bool aInputIsTainted)
{
  mSourceGraphicIndex = GetLastResultIndex(aPrimitiveDescrs);

  // Clip previous filter's output to this filter's filter region.
  if (mSourceGraphicIndex >= 0) {
    FilterPrimitiveDescription& sourceDescr = aPrimitiveDescrs[mSourceGraphicIndex];
    sourceDescr.SetPrimitiveSubregion(sourceDescr.PrimitiveSubregion().Intersect(mFilterSpaceBounds));
  }

  // Get the filter primitive elements.
  nsTArray<RefPtr<nsSVGFE> > primitives;
  for (nsIContent* child = mFilterElement->nsINode::GetFirstChild();
       child;
       child = child->GetNextSibling()) {
    RefPtr<nsSVGFE> primitive;
    CallQueryInterface(child, (nsSVGFE**)getter_AddRefs(primitive));
    if (primitive) {
      primitives.AppendElement(primitive);
    }
  }

  // Maps source image name to source index.
  nsDataHashtable<nsStringHashKey, int32_t> imageTable(8);

  // The principal that we check principals of any loaded images against.
  nsCOMPtr<nsIPrincipal> principal = mTargetContent->NodePrincipal();

  for (uint32_t primitiveElementIndex = 0;
       primitiveElementIndex < primitives.Length();
       ++primitiveElementIndex) {
    nsSVGFE* filter = primitives[primitiveElementIndex];

    AutoTArray<int32_t,2> sourceIndices;
    nsresult rv = GetSourceIndices(filter, aPrimitiveDescrs, imageTable, sourceIndices);
    if (NS_FAILED(rv)) {
      return rv;
    }

    IntRect primitiveSubregion =
      ComputeFilterPrimitiveSubregion(filter, aPrimitiveDescrs, sourceIndices);

    nsTArray<bool> sourcesAreTainted;
    GetInputsAreTainted(aPrimitiveDescrs, sourceIndices, aInputIsTainted, sourcesAreTainted);

    FilterPrimitiveDescription descr =
      filter->GetPrimitiveDescription(this, primitiveSubregion, sourcesAreTainted, aInputImages);

    descr.SetIsTainted(filter->OutputIsTainted(sourcesAreTainted, principal));
    descr.SetFilterSpaceBounds(mFilterSpaceBounds);
    descr.SetPrimitiveSubregion(primitiveSubregion.Intersect(descr.FilterSpaceBounds()));

    for (uint32_t i = 0; i < sourceIndices.Length(); i++) {
      int32_t inputIndex = sourceIndices[i];
      descr.SetInputPrimitive(i, inputIndex);

      ColorSpace inputColorSpace = inputIndex >= 0
        ? aPrimitiveDescrs[inputIndex].OutputColorSpace()
        : ColorSpace(ColorSpace::SRGB);

      ColorSpace desiredInputColorSpace = filter->GetInputColorSpace(i, inputColorSpace);
      descr.SetInputColorSpace(i, desiredInputColorSpace);
      if (i == 0) {
        // the output color space is whatever in1 is if there is an in1
        descr.SetOutputColorSpace(desiredInputColorSpace);
      }
    }

    if (sourceIndices.Length() == 0) {
      descr.SetOutputColorSpace(filter->GetOutputColorSpace());
    }

    aPrimitiveDescrs.AppendElement(descr);
    uint32_t primitiveDescrIndex = aPrimitiveDescrs.Length() - 1;

    nsAutoString str;
    filter->GetResultImageName().GetAnimValue(str, filter);
    imageTable.Put(str, primitiveDescrIndex);
  }

  return NS_OK;
}

//.........这里部分代码省略.........
        }
        // If we didn't have any special action to perform, fall through
        // to check for special uppercase (ß)
      }

      mcm = mozilla::unicode::SpecialUpper(ch);
      if (mcm) {
        int j = 0;
        while (j < 2 && mcm->mMappedChars[j + 1]) {
          aConvertedString.Append(mcm->mMappedChars[j]);
          ++extraChars;
          ++j;
        }
        ch = mcm->mMappedChars[j];
        break;
      }

      ch = ToUpperCase(ch);
      break;

    case NS_STYLE_TEXT_TRANSFORM_CAPITALIZE:
      if (aTextRun) {
        if (capitalizeDutchIJ && ch == 'j') {
          ch = 'J';
          capitalizeDutchIJ = false;
          break;
        }
        capitalizeDutchIJ = false;
        if (i < aTextRun->mCapitalize.Length() && aTextRun->mCapitalize[i]) {
          if (languageSpecificCasing == eLSCB_Turkish && ch == 'i') {
            ch = LATIN_CAPITAL_LETTER_I_WITH_DOT_ABOVE;
            break;
          }
          if (languageSpecificCasing == eLSCB_Dutch && ch == 'i') {
            ch = 'I';
            capitalizeDutchIJ = true;
            break;
          }

          mcm = mozilla::unicode::SpecialTitle(ch);
          if (mcm) {
            int j = 0;
            while (j < 2 && mcm->mMappedChars[j + 1]) {
              aConvertedString.Append(mcm->mMappedChars[j]);
              ++extraChars;
              ++j;
            }
            ch = mcm->mMappedChars[j];
            break;
          }

          ch = ToTitleCase(ch);
        }
      }
      break;

    case NS_STYLE_TEXT_TRANSFORM_FULLWIDTH:
      ch = mozilla::unicode::GetFullWidth(ch);
      break;

    default:
      break;
    }

    if (ch == uint32_t(-1)) {
      aDeletedCharsArray.AppendElement(true);
      mergeNeeded = true;
    } else {
      aDeletedCharsArray.AppendElement(false);
      aCharsToMergeArray.AppendElement(false);
      if (aTextRun) {
        aStyleArray->AppendElement(styleContext);
        aCanBreakBeforeArray->AppendElement(inhibitBreakBefore ? false :
                                            aTextRun->CanBreakLineBefore(i));
      }

      if (IS_IN_BMP(ch)) {
        aConvertedString.Append(ch);
      } else {
        aConvertedString.Append(H_SURROGATE(ch));
        aConvertedString.Append(L_SURROGATE(ch));
        ++i;
        aDeletedCharsArray.AppendElement(true); // not exactly deleted, but the
                                                // trailing surrogate is skipped
        ++extraChars;
      }

      while (extraChars-- > 0) {
        mergeNeeded = true;
        aCharsToMergeArray.AppendElement(true);
        if (aTextRun) {
          aStyleArray->AppendElement(styleContext);
          aCanBreakBeforeArray->AppendElement(false);
        }
      }
    }
  }

  return mergeNeeded;
}

nsresult
nsTextControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
{
  NS_ASSERTION(mContent, "We should have a content!");

  mState |= NS_FRAME_INDEPENDENT_SELECTION;

  nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
  NS_ASSERTION(txtCtrl, "Content not a text control element");

  // Bind the frame to its text control
  nsresult rv = txtCtrl->BindToFrame(this);
  NS_ENSURE_SUCCESS(rv, rv);

  nsIContent* rootNode = txtCtrl->GetRootEditorNode();
  NS_ENSURE_TRUE(rootNode, NS_ERROR_OUT_OF_MEMORY);

  if (!aElements.AppendElement(rootNode))
    return NS_ERROR_OUT_OF_MEMORY;

  // Do we need a placeholder node?
  nsAutoString placeholderTxt;
  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::placeholder,
                    placeholderTxt);
  nsContentUtils::RemoveNewlines(placeholderTxt);
  mUsePlaceholder = !placeholderTxt.IsEmpty();

  // Create the placeholder anonymous content if needed.
  if (mUsePlaceholder) {
    nsIContent* placeholderNode = txtCtrl->CreatePlaceholderNode();
    NS_ENSURE_TRUE(placeholderNode, NS_ERROR_OUT_OF_MEMORY);

    // Associate ::-moz-placeholder pseudo-element with the placeholder node.
    nsCSSPseudoElements::Type pseudoType =
      nsCSSPseudoElements::ePseudo_mozPlaceholder;

    nsRefPtr<nsStyleContext> placeholderStyleContext =
      PresContext()->StyleSet()->ResolvePseudoElementStyle(
          mContent->AsElement(), pseudoType, StyleContext(),
          placeholderNode->AsElement());

    if (!aElements.AppendElement(ContentInfo(placeholderNode,
                                 placeholderStyleContext))) {
      return NS_ERROR_OUT_OF_MEMORY;
    }
  }

  rv = UpdateValueDisplay(false);
  NS_ENSURE_SUCCESS(rv, rv);

  // textareas are eagerly initialized
  bool initEagerly = !IsSingleLineTextControl();
  if (!initEagerly) {
    // Also, input elements which have a cached selection should get eager
    // editor initialization.
    nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent());
    NS_ASSERTION(txtCtrl, "Content not a text control element");
    initEagerly = txtCtrl->HasCachedSelection();
  }
  if (!initEagerly) {
    nsCOMPtr<nsIDOMHTMLElement> element = do_QueryInterface(txtCtrl);
    if (element) {
      // so are input text controls with spellcheck=true
      element->GetSpellcheck(&initEagerly);
    }
  }

  if (initEagerly) {
    NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
                 "Someone forgot a script blocker?");
    EditorInitializer* initializer = (EditorInitializer*) Properties().Get(TextControlInitializer());
    if (initializer) {
      initializer->Revoke();
    }
    initializer = new EditorInitializer(this);
    Properties().Set(TextControlInitializer(),initializer);
    if (!nsContentUtils::AddScriptRunner(initializer)) {
      initializer->Revoke(); // paranoia
      Properties().Delete(TextControlInitializer());
      delete initializer;
      return NS_ERROR_OUT_OF_MEMORY;
    }
  }

  return NS_OK;
}

nsresult
sbWinFindDevicesByStorageDevNum(STORAGE_DEVICE_NUMBER* aStorageDevNum,
                                PRBool                 aMatchPartitionNumber,
                                const GUID*            aGUID,
                                nsTArray<DEVINST>&     aDevInstList)
{
  // Validate arguments.
  NS_ENSURE_ARG_POINTER(aStorageDevNum);
  NS_ENSURE_ARG_POINTER(aGUID);

  // Function variables.
  nsresult rv;

  // Get the interface device class info and set up for auto-disposal.
  HDEVINFO devInfo =
             SetupDiGetClassDevsW(aGUID,
                                  NULL,
                                  NULL,
                                  DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
  NS_ENSURE_TRUE(devInfo != INVALID_HANDLE_VALUE, NS_ERROR_FAILURE);
  sbAutoHDEVINFO autoDevInfo(devInfo);

  // Search for device instances with a matching storage device number.
  aDevInstList.Clear();
  DWORD devIndex = 0;
  while (1) {
    // Get the next device detail data and set it up for auto-disposal.
    PSP_DEVICE_INTERFACE_DETAIL_DATA devIfDetailData;
    SP_DEVINFO_DATA                  devInfoData;
    rv = sbWinGetDevDetail(&devIfDetailData,
                           &devInfoData,
                           devInfo,
                           aGUID,
                           devIndex++);
    if (rv == NS_ERROR_NOT_AVAILABLE)
      break;
    NS_ENSURE_SUCCESS(rv, rv);
    sbAutoMemPtr<SP_DEVICE_INTERFACE_DETAIL_DATA>
      autoDevIfDetailData(devIfDetailData);

    // Get the next storage device number.
    STORAGE_DEVICE_NUMBER storageDevNum;
    rv = sbWinGetStorageDevNum(devIfDetailData->DevicePath, &storageDevNum);
    if (NS_FAILED(rv))
      continue;

    // Skip device instance if it doesn't match the target storage device
    // number.
    if (storageDevNum.DeviceType != aStorageDevNum->DeviceType)
      continue;
    if (storageDevNum.DeviceNumber != aStorageDevNum->DeviceNumber)
      continue;
    if (aMatchPartitionNumber &&
        (storageDevNum.PartitionNumber != aStorageDevNum->PartitionNumber)) {
      continue;
    }

    // Add device instance to list.
    NS_ENSURE_TRUE(aDevInstList.AppendElement(devInfoData.DevInst),
                   NS_ERROR_OUT_OF_MEMORY);
  }

  return NS_OK;
}

nsresult
nsCanvasFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
{
  if (!mContent) {
    return NS_OK;
  }

  nsCOMPtr<nsIDocument> doc = mContent->OwnerDoc();
  nsresult rv = NS_OK;
  ErrorResult er;
  // We won't create touch caret element if preference is not enabled.
  if (PresShell::TouchCaretPrefEnabled()) {
    nsRefPtr<NodeInfo> nodeInfo;

    // Create and append touch caret frame.
    nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::div, nullptr,
                                                   kNameSpaceID_XHTML,
                                                   nsIDOMNode::ELEMENT_NODE);
    NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);

    rv = NS_NewHTMLElement(getter_AddRefs(mTouchCaretElement), nodeInfo.forget(),
                           NOT_FROM_PARSER);
    NS_ENSURE_SUCCESS(rv, rv);
    aElements.AppendElement(mTouchCaretElement);

    // Set touch caret to visibility: hidden by default.
    nsAutoString classValue;
    classValue.AppendLiteral("moz-touchcaret hidden");
    rv = mTouchCaretElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                     classValue, true);

    if (!mDummyTouchListener) {
      mDummyTouchListener = new DummyTouchListener();
    }
    mTouchCaretElement->AddEventListener(NS_LITERAL_STRING("touchstart"),
                                         mDummyTouchListener, false);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  if (PresShell::SelectionCaretPrefEnabled()) {
    // Selection caret
    mSelectionCaretsStartElement = doc->CreateHTMLElement(nsGkAtoms::div);
    aElements.AppendElement(mSelectionCaretsStartElement);
    nsCOMPtr<mozilla::dom::Element> selectionCaretsStartElementInner = doc->CreateHTMLElement(nsGkAtoms::div);
    mSelectionCaretsStartElement->AppendChildTo(selectionCaretsStartElementInner, false);

    mSelectionCaretsEndElement = doc->CreateHTMLElement(nsGkAtoms::div);
    aElements.AppendElement(mSelectionCaretsEndElement);
    nsCOMPtr<mozilla::dom::Element> selectionCaretsEndElementInner = doc->CreateHTMLElement(nsGkAtoms::div);
    mSelectionCaretsEndElement->AppendChildTo(selectionCaretsEndElementInner, false);

    rv = mSelectionCaretsStartElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                               NS_LITERAL_STRING("moz-selectioncaret-left hidden"),
                                               true);
    NS_ENSURE_SUCCESS(rv, rv);

    rv = mSelectionCaretsEndElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                             NS_LITERAL_STRING("moz-selectioncaret-right hidden"),
                                             true);

    if (!mDummyTouchListener) {
      mDummyTouchListener = new DummyTouchListener();
    }
    mSelectionCaretsStartElement->AddEventListener(NS_LITERAL_STRING("touchstart"),
                                                   mDummyTouchListener, false);
    mSelectionCaretsEndElement->AddEventListener(NS_LITERAL_STRING("touchstart"),
                                                 mDummyTouchListener, false);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  // Create the custom content container.
  mCustomContentContainer = doc->CreateHTMLElement(nsGkAtoms::div);
  aElements.AppendElement(mCustomContentContainer);

  // XXX add :moz-native-anonymous or will that be automatically set?
  rv = mCustomContentContainer->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                        NS_LITERAL_STRING("moz-custom-content-container"),
                                        true);
  NS_ENSURE_SUCCESS(rv, rv);

  // Append all existing AnonymousContent nodes stored at document level if any.
  size_t len = doc->GetAnonymousContents().Length();
  for (size_t i = 0; i < len; ++i) {
    nsCOMPtr<Element> node = doc->GetAnonymousContents()[i]->GetContentNode();
    mCustomContentContainer->AppendChildTo(node->AsContent(), true);
  }

  // Only create a frame for mCustomContentContainer if it has some children.
  if (len == 0) {
    HideCustomContentContainer();
  }

  return NS_OK;
}

nsresult
nsFileControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
{
  nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
  nsCOMPtr<nsINodeInfo> nodeInfo;

  // Create and setup the file picking button.
  nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::button, nullptr,
                                                 kNameSpaceID_XHTML,
                                                 nsIDOMNode::ELEMENT_NODE);
  NS_NewHTMLElement(getter_AddRefs(mBrowse), nodeInfo.forget(),
                    dom::NOT_FROM_PARSER);
  // NOTE: SetNativeAnonymous() has to be called before setting any attribute.
  mBrowse->SetNativeAnonymous();
  mBrowse->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
                   NS_LITERAL_STRING("button"), false);

  // Set the file picking button text depending on the current locale.
  nsXPIDLString buttonTxt;
  nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
                                     "Browse", buttonTxt);

  // Set the browse button text. It's a bit of a pain to do because we want to
  // make sure we are not notifying.
  nsRefPtr<nsTextNode> textContent =
    new nsTextNode(mBrowse->NodeInfo()->NodeInfoManager());

  textContent->SetText(buttonTxt, false);

  nsresult rv = mBrowse->AppendChildTo(textContent, false);
  NS_ENSURE_SUCCESS(rv, rv);

  // Make sure access key and tab order for the element actually redirect to the
  // file picking button.
  nsCOMPtr<nsIDOMHTMLInputElement> fileContent = do_QueryInterface(mContent);
  nsCOMPtr<nsIDOMHTMLButtonElement> browseControl = do_QueryInterface(mBrowse);

  nsAutoString accessKey;
  fileContent->GetAccessKey(accessKey);
  browseControl->SetAccessKey(accessKey);

  int32_t tabIndex;
  fileContent->GetTabIndex(&tabIndex);
  browseControl->SetTabIndex(tabIndex);

  if (!aElements.AppendElement(mBrowse)) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  // Create and setup the text showing the selected files.
  nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::label, nullptr,
                                                 kNameSpaceID_XUL,
                                                 nsIDOMNode::ELEMENT_NODE);
  NS_TrustedNewXULElement(getter_AddRefs(mTextContent), nodeInfo.forget());
  // NOTE: SetNativeAnonymous() has to be called before setting any attribute.
  mTextContent->SetNativeAnonymous();
  mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::crop,
                        NS_LITERAL_STRING("center"), false);

  // Update the displayed text to reflect the current element's value.
  nsAutoString value;
  HTMLInputElement::FromContent(mContent)->GetDisplayFileName(value);
  UpdateDisplayedValue(value, false);

  if (!aElements.AppendElement(mTextContent)) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  // We should be able to interact with the element by doing drag and drop.
  mContent->AddSystemEventListener(NS_LITERAL_STRING("drop"),
                                   mMouseListener, false);
  mContent->AddSystemEventListener(NS_LITERAL_STRING("dragover"),
                                   mMouseListener, false);

  SyncDisabledState();

  return NS_OK;
}

void
GMPVideoDecoder::InitTags(nsTArray<nsCString>& aTags)
{
  aTags.AppendElement(NS_LITERAL_CSTRING("h264"));
}

// Build whitelist to check for board type.
static void InitWhiteList(nsTArray<nsString>& list)
{
  nsString ele;
  ele.AssignASCII("droid2"); // Motorola Droid 2
  list.AppendElement(ele);
  ele.AssignASCII("GT-I9100"); // Samsung Galaxy SII
  list.AppendElement(ele);
  ele.AssignASCII("herring"); // Samsung Nexus S
  list.AppendElement(ele);
  ele.AssignASCII("omap4sdp"); // Amazon Kindle Fire
  list.AppendElement(ele);
  ele.AssignASCII("SGH-I897"); // Samsung Galaxy S
  list.AppendElement(ele);
  ele.AssignASCII("sgh-i997"); // Samsung Infuse 4G
  list.AppendElement(ele);
  ele.AssignASCII("sgh-t839"); // Samsung Sidekick 4G
  list.AppendElement(ele);
  ele.AssignASCII("shadow"); // Motorola Droid X
  list.AppendElement(ele);
  ele.AssignASCII("spyder"); // Motorola Razr
  list.AppendElement(ele);
  ele.AssignASCII("targa"); // Motorola Droid Bionic
  list.AppendElement(ele);
  ele.AssignASCII("tuna"); // Galaxy Nexus
  list.AppendElement(ele);
  ele.AssignASCII("venus2"); // Motorla Droid Pro
  list.AppendElement(ele);
}

nsresult
nsCanvasFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
{
  if (!mContent) {
    return NS_OK;
  }

  nsCOMPtr<nsIDocument> doc = mContent->OwnerDoc();
  nsresult rv = NS_OK;
  ErrorResult er;
  // We won't create touch caret element if preference is not enabled.
  if (PresShell::TouchCaretPrefEnabled()) {
    RefPtr<NodeInfo> nodeInfo;

    // Create and append touch caret frame.
    nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::div, nullptr,
                                                   kNameSpaceID_XHTML,
                                                   nsIDOMNode::ELEMENT_NODE);
    NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);

    rv = NS_NewHTMLElement(getter_AddRefs(mTouchCaretElement), nodeInfo.forget(),
                           NOT_FROM_PARSER);
    NS_ENSURE_SUCCESS(rv, rv);
    aElements.AppendElement(mTouchCaretElement);

    // Set touch caret to visibility: hidden by default.
    nsAutoString classValue;
    classValue.AppendLiteral("moz-touchcaret hidden");
    rv = mTouchCaretElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                     classValue, true);

    if (!mDummyTouchListener) {
      mDummyTouchListener = new DummyTouchListener();
    }
    mTouchCaretElement->AddEventListener(NS_LITERAL_STRING("touchstart"),
                                         mDummyTouchListener, false);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  if (PresShell::SelectionCaretPrefEnabled()) {
    // Selection caret
    mSelectionCaretsStartElement = doc->CreateHTMLElement(nsGkAtoms::div);
    aElements.AppendElement(mSelectionCaretsStartElement);
    nsCOMPtr<mozilla::dom::Element> selectionCaretsStartElementInner = doc->CreateHTMLElement(nsGkAtoms::div);
    mSelectionCaretsStartElement->AppendChildTo(selectionCaretsStartElementInner, false);

    mSelectionCaretsEndElement = doc->CreateHTMLElement(nsGkAtoms::div);
    aElements.AppendElement(mSelectionCaretsEndElement);
    nsCOMPtr<mozilla::dom::Element> selectionCaretsEndElementInner = doc->CreateHTMLElement(nsGkAtoms::div);
    mSelectionCaretsEndElement->AppendChildTo(selectionCaretsEndElementInner, false);

    rv = mSelectionCaretsStartElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                               NS_LITERAL_STRING("moz-selectioncaret-left hidden"),
                                               true);
    NS_ENSURE_SUCCESS(rv, rv);

    rv = mSelectionCaretsEndElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                             NS_LITERAL_STRING("moz-selectioncaret-right hidden"),
                                             true);

    if (!mDummyTouchListener) {
      mDummyTouchListener = new DummyTouchListener();
    }
    mSelectionCaretsStartElement->AddEventListener(NS_LITERAL_STRING("touchstart"),
                                                   mDummyTouchListener, false);
    mSelectionCaretsEndElement->AddEventListener(NS_LITERAL_STRING("touchstart"),
                                                 mDummyTouchListener, false);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  // Create the custom content container.
  mCustomContentContainer = doc->CreateHTMLElement(nsGkAtoms::div);
#ifdef DEBUG
  // We restyle our mCustomContentContainer, even though it's root anonymous
  // content.  Normally that's not OK because the frame constructor doesn't know
  // how to order the frame tree in such cases, but we make this work for this
  // particular case, so it's OK.
  mCustomContentContainer->SetProperty(nsGkAtoms::restylableAnonymousNode,
                                       reinterpret_cast<void*>(true));
#endif // DEBUG

  aElements.AppendElement(mCustomContentContainer);

  // XXX add :moz-native-anonymous or will that be automatically set?
  rv = mCustomContentContainer->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
                                        NS_LITERAL_STRING("moz-custom-content-container"),
                                        true);
  NS_ENSURE_SUCCESS(rv, rv);

  // Append all existing AnonymousContent nodes stored at document level if any.
  size_t len = doc->GetAnonymousContents().Length();
  for (size_t i = 0; i < len; ++i) {
    nsCOMPtr<Element> node = doc->GetAnonymousContents()[i]->GetContentNode();
    mCustomContentContainer->AppendChildTo(node->AsContent(), true);
  }

  // Only create a frame for mCustomContentContainer if it has some children.
  if (len == 0) {
    HideCustomContentContainer();
  }
//.........这里部分代码省略.........

nsresult
nsFontCache::GetMetricsFor(const nsFont& aFont,
                           nsIAtom* aLanguage, bool aExplicitLanguage,
                           gfxFont::Orientation aOrientation,
                           gfxUserFontSet* aUserFontSet,
                           gfxTextPerfMetrics* aTextPerf,
                           nsFontMetrics*& aMetrics)
{
    if (!aLanguage)
        aLanguage = mLocaleLanguage;

    // First check our cache
    // start from the end, which is where we put the most-recent-used element

    nsFontMetrics* fm;
    int32_t n = mFontMetrics.Length() - 1;
    for (int32_t i = n; i >= 0; --i) {
        fm = mFontMetrics[i];
        if (fm->Font().Equals(aFont) && fm->GetUserFontSet() == aUserFontSet &&
            fm->Language() == aLanguage && fm->Orientation() == aOrientation) {
            if (i != n) {
                // promote it to the end of the cache
                mFontMetrics.RemoveElementAt(i);
                mFontMetrics.AppendElement(fm);
            }
            fm->GetThebesFontGroup()->UpdateUserFonts();
            NS_ADDREF(aMetrics = fm);
            return NS_OK;
        }
    }

    // It's not in the cache. Get font metrics and then cache them.

    fm = new nsFontMetrics();
    NS_ADDREF(fm);
    nsresult rv = fm->Init(aFont, aLanguage, aExplicitLanguage, aOrientation,
                           mContext, aUserFontSet, aTextPerf);
    if (NS_SUCCEEDED(rv)) {
        // the mFontMetrics list has the "head" at the end, because append
        // is cheaper than insert
        mFontMetrics.AppendElement(fm);
        aMetrics = fm;
        NS_ADDREF(aMetrics);
        return NS_OK;
    }
    fm->Destroy();
    NS_RELEASE(fm);

    // One reason why Init() fails is because the system is running out of
    // resources. e.g., on Win95/98 only a very limited number of GDI
    // objects are available. Compact the cache and try again.

    Compact();
    fm = new nsFontMetrics();
    NS_ADDREF(fm);
    rv = fm->Init(aFont, aLanguage, aExplicitLanguage, aOrientation, mContext,
                  aUserFontSet, aTextPerf);
    if (NS_SUCCEEDED(rv)) {
        mFontMetrics.AppendElement(fm);
        aMetrics = fm;
        return NS_OK;
    }
    fm->Destroy();
    NS_RELEASE(fm);

    // could not setup a new one, send an old one (XXX search a "best
    // match"?)

    n = mFontMetrics.Length() - 1; // could have changed in Compact()
    if (n >= 0) {
        aMetrics = mFontMetrics[n];
        NS_ADDREF(aMetrics);
        return NS_OK;
    }

    NS_POSTCONDITION(NS_SUCCEEDED(rv),
                     "font metrics should not be null - bug 136248");
    return rv;
}

void
SVGFEDropShadowElement::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
{
  aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN1], this));
}

nsresult
nsFileControlFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
{
  // Get the NodeInfoManager and tag necessary to create input elements
  nsCOMPtr<nsIDocument> doc = mContent->GetDocument();

  nsCOMPtr<nsINodeInfo> nodeInfo;
  doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::input, nsnull,
                                      kNameSpaceID_None,
                                      getter_AddRefs(nodeInfo));

  // Create the text content
  NS_NewHTMLElement(getter_AddRefs(mTextContent), nodeInfo, PR_FALSE);
  if (!mTextContent)
    return NS_ERROR_OUT_OF_MEMORY;

  mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
                        NS_LITERAL_STRING("text"), PR_FALSE);

  nsCOMPtr<nsIDOMHTMLInputElement> textControl = do_QueryInterface(mTextContent);
  if (textControl) {
    nsCOMPtr<nsIFileControlElement> fileControl = do_QueryInterface(mContent);
    if (fileControl) {
      // Initialize value when we create the content in case the value was set
      // before we got here
      nsAutoString value;
      fileControl->GetFileName(value);
      textControl->SetValue(value);
    }

    textControl->SetTabIndex(-1);
    textControl->SetReadOnly(PR_TRUE);
  }

  if (!aElements.AppendElement(mTextContent))
    return NS_ERROR_OUT_OF_MEMORY;

  NS_NAMED_LITERAL_STRING(click, "click");
  nsCOMPtr<nsIDOMEventGroup> systemGroup;
  mContent->GetSystemEventGroup(getter_AddRefs(systemGroup));
  nsCOMPtr<nsIDOM3EventTarget> dom3TextContent =
    do_QueryInterface(mTextContent);
  NS_ENSURE_STATE(dom3TextContent);
  // Register as an event listener of the textbox
  // to open file dialog on mouse click
  dom3TextContent->AddGroupedEventListener(click, mMouseListener, PR_FALSE,
                                           systemGroup);

  // Create the browse button
  NS_NewHTMLElement(getter_AddRefs(mBrowse), nodeInfo, PR_FALSE);
  if (!mBrowse)
    return NS_ERROR_OUT_OF_MEMORY;

  mBrowse->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
                   NS_LITERAL_STRING("button"), PR_FALSE);
  nsCOMPtr<nsIDOMHTMLInputElement> fileContent = do_QueryInterface(mContent);
  nsCOMPtr<nsIDOMHTMLInputElement> browseControl = do_QueryInterface(mBrowse);
  if (fileContent && browseControl) {
    PRInt32 tabIndex;
    nsAutoString accessKey;

    fileContent->GetAccessKey(accessKey);
    browseControl->SetAccessKey(accessKey);
    fileContent->GetTabIndex(&tabIndex);
    browseControl->SetTabIndex(tabIndex);
  }

  if (!aElements.AppendElement(mBrowse))
    return NS_ERROR_OUT_OF_MEMORY;

  nsCOMPtr<nsIDOM3EventTarget> dom3Browse = do_QueryInterface(mBrowse);
  NS_ENSURE_STATE(dom3Browse);
  // Register as an event listener of the button
  // to open file dialog on mouse click
  dom3Browse->AddGroupedEventListener(click, mMouseListener, PR_FALSE,
                                      systemGroup);

  SyncAttr(kNameSpaceID_None, nsGkAtoms::size,     SYNC_TEXT);
  SyncAttr(kNameSpaceID_None, nsGkAtoms::disabled, SYNC_BOTH);

  return NS_OK;
}