static String innerTextValueFrom(TextControlInnerTextElement& innerText)
{
StringBuilder result;
for (Node* node = innerText.firstChild(); node; node = NodeTraversal::next(*node, &innerText)) {
if (is<HTMLBRElement>(*node))
result.append(newlineCharacter);
else if (is<Text>(*node))
result.append(downcast<Text>(*node).data());
}
stripTrailingNewline(result);
return result.toString();
}
PassRefPtr<Range> HTMLTextFormControlElement::selection() const
{
if (!renderer() || !isTextFormControl() || !hasCachedSelection())
return nullptr;
int start = m_cachedSelectionStart;
int end = m_cachedSelectionEnd;
ASSERT(start <= end);
TextControlInnerTextElement* innerText = innerTextElement();
if (!innerText)
return nullptr;
if (!innerText->firstChild())
return Range::create(document(), innerText, 0, innerText, 0);
int offset = 0;
Node* startNode = nullptr;
Node* endNode = nullptr;
for (Node* node = innerText->firstChild(); node; node = NodeTraversal::next(*node, innerText)) {
ASSERT(!node->firstChild());
ASSERT(node->isTextNode() || node->hasTagName(brTag));
int length = node->isTextNode() ? lastOffsetInNode(node) : 1;
if (offset <= start && start <= offset + length)
setContainerAndOffsetForRange(node, start - offset, startNode, start);
if (offset <= end && end <= offset + length) {
setContainerAndOffsetForRange(node, end - offset, endNode, end);
break;
}
offset += length;
}
if (!startNode || !endNode)
return nullptr;
return Range::create(document(), startNode, start, endNode, end);
}
String HTMLTextFormControlElement::valueWithHardLineBreaks() const
{
// FIXME: It's not acceptable to ignore the HardWrap setting when there is no renderer.
// While we have no evidence this has ever been a practical problem, it would be best to fix it some day.
if (!isTextFormControl())
return value();
TextControlInnerTextElement* innerText = innerTextElement();
if (!innerText)
return value();
RenderTextControlInnerBlock* renderer = innerText->renderer();
if (!renderer)
return value();
Node* breakNode;
unsigned breakOffset;
RootInlineBox* line = renderer->firstRootBox();
if (!line)
return value();
getNextSoftBreak(line, breakNode, breakOffset);
StringBuilder result;
for (Node* node = innerText->firstChild(); node; node = NodeTraversal::next(*node, innerText)) {
if (is<HTMLBRElement>(*node))
result.append(newlineCharacter);
else if (is<Text>(*node)) {
String data = downcast<Text>(*node).data();
unsigned length = data.length();
unsigned position = 0;
while (breakNode == node && breakOffset <= length) {
if (breakOffset > position) {
result.append(data, position, breakOffset - position);
position = breakOffset;
result.append(newlineCharacter);
}
getNextSoftBreak(line, breakNode, breakOffset);
}
result.append(data, position, length - position);
}
while (breakNode == node)
getNextSoftBreak(line, breakNode, breakOffset);
}
stripTrailingNewline(result);
return result.toString();
}
