Exemple #1
0
void
TextAttrsMgr::GetRange(TextAttr* aAttrArray[], uint32_t aAttrArrayLen,
                       uint32_t* aStartOffset, uint32_t* aEndOffset)
{
  // Navigate backward from anchor accessible to find start offset.
  for (int32_t childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
    Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);

    // Stop on embedded accessible since embedded accessibles are combined into
    // own range.
    if (!currAcc->IsText())
      break;

    MOZ_ASSERT(nsCoreUtils::GetDOMElementFor(currAcc->GetContent()),
               "Text accessible has to have an associated DOM element");

    bool offsetFound = false;
    for (uint32_t attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
      TextAttr* textAttr = aAttrArray[attrIdx];
      if (!textAttr->Equal(currAcc)) {
        offsetFound = true;
        break;
      }
    }

    if (offsetFound)
      break;

    *(aStartOffset) -= nsAccUtils::TextLength(currAcc);
  }

  // Navigate forward from anchor accessible to find end offset.
  uint32_t childLen = mHyperTextAcc->ChildCount();
  for (uint32_t childIdx = mOffsetAccIdx + 1; childIdx < childLen; childIdx++) {
    Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
    if (!currAcc->IsText())
      break;

    MOZ_ASSERT(nsCoreUtils::GetDOMElementFor(currAcc->GetContent()),
               "Text accessible has to have an associated DOM element");

    bool offsetFound = false;
    for (uint32_t attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
      TextAttr* textAttr = aAttrArray[attrIdx];

      // Alter the end offset when text attribute changes its value and stop
      // the search.
      if (!textAttr->Equal(currAcc)) {
        offsetFound = true;
        break;
      }
    }

    if (offsetFound)
      break;

    (*aEndOffset) += nsAccUtils::TextLength(currAcc);
  }
}
Exemple #2
0
void
TextAttrsMgr::GetRange(TextAttr* aAttrArray[], PRUint32 aAttrArrayLen,
                       PRInt32* aStartHTOffset, PRInt32* aEndHTOffset)
{
  // Navigate backward from anchor accessible to find start offset.
  for (PRInt32 childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
    Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);

    // Stop on embedded accessible since embedded accessibles are combined into
    // own range.
    if (nsAccUtils::IsEmbeddedObject(currAcc))
      break;

    bool offsetFound = false;
    for (PRUint32 attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
      TextAttr* textAttr = aAttrArray[attrIdx];
      if (!textAttr->Equal(currAcc)) {
        offsetFound = true;
        break;
      }
    }

    if (offsetFound)
      break;

    *(aStartHTOffset) -= nsAccUtils::TextLength(currAcc);
  }

  // Navigate forward from anchor accessible to find end offset.
  PRUint32 childLen = mHyperTextAcc->ChildCount();
  for (PRUint32 childIdx = mOffsetAccIdx + 1; childIdx < childLen; childIdx++) {
    Accessible* currAcc = mHyperTextAcc->GetChildAt(childIdx);
    if (nsAccUtils::IsEmbeddedObject(currAcc))
      break;

    bool offsetFound = false;
    for (PRUint32 attrIdx = 0; attrIdx < aAttrArrayLen; attrIdx++) {
      TextAttr* textAttr = aAttrArray[attrIdx];

      // Alter the end offset when text attribute changes its value and stop
      // the search.
      if (!textAttr->Equal(currAcc)) {
        offsetFound = true;
        break;
      }
    }

    if (offsetFound)
      break;

    (*aEndHTOffset) += nsAccUtils::TextLength(currAcc);
  }
}