Esempio n. 1
0
nsresult
nsTextAttrsMgr::GetAttributes(nsIPersistentProperties *aAttributes,
                              PRInt32 *aStartHTOffset,
                              PRInt32 *aEndHTOffset)
{
  // 1. Hyper text accessible must be specified always.
  // 2. Offset accessible and result hyper text offsets must be specified in
  // the case of text attributes.
  // 3. Offset accessible and result hyper text offsets must not be specified
  // but include default text attributes flag and attributes list must be
  // specified in the case of default text attributes.
  NS_PRECONDITION(mHyperTextAcc &&
                  ((mOffsetAcc && mOffsetAccIdx != -1 &&
                    aStartHTOffset && aEndHTOffset) ||
                  (!mOffsetAcc && mOffsetAccIdx == -1 &&
                    !aStartHTOffset && !aEndHTOffset &&
                   mIncludeDefAttrs && aAttributes)),
                  "Wrong usage of nsTextAttrsMgr!");

  // Embedded objects are combined into own range with empty attributes set.
  if (mOffsetAcc && nsAccUtils::IsEmbeddedObject(mOffsetAcc)) {
    for (PRInt32 childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
      nsAccessible *currAcc = mHyperTextAcc->GetChildAt(childIdx);
      if (!nsAccUtils::IsEmbeddedObject(currAcc))
        break;

      (*aStartHTOffset)--;
    }

    PRInt32 childCount = mHyperTextAcc->GetChildCount();
    for (PRInt32 childIdx = mOffsetAccIdx + 1; childIdx < childCount;
         childIdx++) {
      nsAccessible *currAcc = mHyperTextAcc->GetChildAt(childIdx);
      if (!nsAccUtils::IsEmbeddedObject(currAcc))
        break;

      (*aEndHTOffset)++;
    }

    return NS_OK;
  }

  // Get the content and frame of the accessible. In the case of document
  // accessible it's role content and root frame.
  nsIContent *hyperTextElm = mHyperTextAcc->GetContent();
  nsIFrame *rootFrame = mHyperTextAcc->GetFrame();
  NS_ASSERTION(rootFrame, "No frame for accessible!");
  if (!rootFrame)
    return NS_OK;

  nsIContent *offsetNode = nsnull, *offsetElm = nsnull;
  nsIFrame *frame = nsnull;
  if (mOffsetAcc) {
    offsetNode = mOffsetAcc->GetContent();
    offsetElm = nsCoreUtils::GetDOMElementFor(offsetNode);
    frame = offsetElm->GetPrimaryFrame();
  }

  nsTArray<nsITextAttr*> textAttrArray(10);

  // "language" text attribute
  nsLangTextAttr langTextAttr(mHyperTextAcc, hyperTextElm, offsetNode);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&langTextAttr));

  // "color" text attribute
  nsCSSTextAttr colorTextAttr(0, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&colorTextAttr));

  // "font-family" text attribute
  nsCSSTextAttr fontFamilyTextAttr(1, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontFamilyTextAttr));

  // "font-style" text attribute
  nsCSSTextAttr fontStyleTextAttr(2, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontStyleTextAttr));

  // "text-line-through-style" text attribute
  nsCSSTextAttr lineThroughTextAttr(3, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&lineThroughTextAttr));

  // "text-underline-style" text attribute
  nsCSSTextAttr underlineTextAttr(4, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&underlineTextAttr));

  // "text-position" text attribute
  nsCSSTextAttr posTextAttr(5, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&posTextAttr));

  // "background-color" text attribute
  nsBGColorTextAttr bgColorTextAttr(rootFrame, frame);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&bgColorTextAttr));

  // "font-size" text attribute
  nsFontSizeTextAttr fontSizeTextAttr(rootFrame, frame);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontSizeTextAttr));

  // "font-weight" text attribute
  nsFontWeightTextAttr fontWeightTextAttr(rootFrame, frame);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontWeightTextAttr));

  // Expose text attributes if applicable.
  if (aAttributes) {
    PRUint32 len = textAttrArray.Length();
    for (PRUint32 idx = 0; idx < len; idx++) {
      nsITextAttr *textAttr = textAttrArray[idx];

      nsAutoString value;
      if (textAttr->GetValue(value, mIncludeDefAttrs))
        nsAccUtils::SetAccAttr(aAttributes, textAttr->GetName(), value);
    }
  }

  nsresult rv = NS_OK;

  // Expose text attributes range where they are applied if applicable.
  if (mOffsetAcc)
    rv = GetRange(textAttrArray, aStartHTOffset, aEndHTOffset);

  textAttrArray.Clear();
  return rv;
}
Esempio n. 2
0
nsresult
nsTextAttrsMgr::GetAttributes(nsIPersistentProperties *aAttributes,
                              PRInt32 *aStartHTOffset,
                              PRInt32 *aEndHTOffset)
{
  // 1. Hyper text accessible and its DOM node must be specified always.
  // 2. Offset DOM node and result hyper text offsets must be specifed in
  // the case of text attributes.
  // 3. Offset DOM node and result hyper text offsets must not be specifed but
  // include default text attributes flag and attributes list must be specified
  // in the case of default text attributes.
  NS_PRECONDITION(mHyperTextAcc && mHyperTextNode &&
                  ((mOffsetNode && aStartHTOffset && aEndHTOffset) ||
                  (!mOffsetNode && !aStartHTOffset && !aEndHTOffset &&
                   mIncludeDefAttrs && aAttributes)),
                  "Wrong usage of nsTextAttrsMgr!");

  nsCOMPtr<nsIDOMElement> hyperTextElm =
    nsCoreUtils::GetDOMElementFor(mHyperTextNode);
  nsCOMPtr<nsIDOMElement> offsetElm;
  if (mOffsetNode)
    offsetElm = nsCoreUtils::GetDOMElementFor(mOffsetNode);

  nsIFrame *rootFrame = nsCoreUtils::GetFrameFor(hyperTextElm);
  nsIFrame *frame = nsnull;
  if (offsetElm)
    frame = nsCoreUtils::GetFrameFor(offsetElm);

  nsTPtrArray<nsITextAttr> textAttrArray(10);

  // "language" text attribute
  nsLangTextAttr langTextAttr(mHyperTextAcc, mHyperTextNode, mOffsetNode);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&langTextAttr));

  // "color" text attribute
  nsCSSTextAttr colorTextAttr(0, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&colorTextAttr));

  // "font-family" text attribute
  nsCSSTextAttr fontFamilyTextAttr(1, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontFamilyTextAttr));

  // "font-style" text attribute
  nsCSSTextAttr fontStyleTextAttr(2, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontStyleTextAttr));

  // "text-line-through-style" text attribute
  nsCSSTextAttr lineThroughTextAttr(3, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&lineThroughTextAttr));

  // "text-underline-style" text attribute
  nsCSSTextAttr underlineTextAttr(4, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&underlineTextAttr));

  // "text-position" text attribute
  nsCSSTextAttr posTextAttr(5, hyperTextElm, offsetElm);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&posTextAttr));

  // "background-color" text attribute
  nsBGColorTextAttr bgColorTextAttr(rootFrame, frame);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&bgColorTextAttr));

  // "font-size" text attribute
  nsFontSizeTextAttr fontSizeTextAttr(rootFrame, frame);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontSizeTextAttr));

  // "font-weight" text attribute
  nsFontWeightTextAttr fontWeightTextAttr(rootFrame, frame);
  textAttrArray.AppendElement(static_cast<nsITextAttr*>(&fontWeightTextAttr));

  // Expose text attributes if applicable.
  if (aAttributes) {
    PRUint32 len = textAttrArray.Length();
    for (PRUint32 idx = 0; idx < len; idx++) {
      nsITextAttr *textAttr = textAttrArray[idx];

      nsAutoString value;
      if (textAttr->GetValue(value, mIncludeDefAttrs))
        nsAccUtils::SetAccAttr(aAttributes, textAttr->GetName(), value);
    }
  }

  nsresult rv = NS_OK;

  // Expose text attributes range where they are applied if applicable.
  if (mOffsetNode)
    rv = GetRange(textAttrArray, aStartHTOffset, aEndHTOffset);

  textAttrArray.Clear();
  return rv;
}