WebSearchableFormData::WebSearchableFormData(const WebFormElement& form, const WebInputElement& selectedInputElement)
{
RefPtr<HTMLFormElement> formElement = form.operator PassRefPtr<HTMLFormElement>();
HTMLInputElement* inputElement = selectedInputElement.operator PassRefPtr<HTMLInputElement>().get();
// Only consider forms that GET data.
// Allow HTTPS only when an input element is provided.
if (equalIgnoringCase(formElement->getAttribute(methodAttr), "post")
|| (!IsHTTPFormSubmit(formElement.get()) && !inputElement))
return;
Vector<char> encodedString;
WTF::TextEncoding encoding;
GetFormEncoding(formElement.get(), &encoding);
if (!encoding.isValid()) {
// Need a valid encoding to encode the form elements.
// If the encoding isn't found webkit ends up replacing the params with
// empty strings. So, we don't try to do anything here.
return;
}
// Look for a suitable search text field in the form when a
// selectedInputElement is not provided.
if (!inputElement) {
inputElement = findSuitableSearchInputElement(formElement.get());
// Return if no suitable text element has been found.
if (!inputElement)
return;
}
HTMLFormControlElement* firstSubmitButton = GetButtonToActivate(formElement.get());
if (firstSubmitButton) {
// The form does not have an active submit button, make the first button
// active. We need to do this, otherwise the URL will not contain the
// name of the submit button.
firstSubmitButton->setActivatedSubmit(true);
}
bool isValidSearchString = buildSearchString(formElement.get(), &encodedString, &encoding, inputElement);
if (firstSubmitButton)
firstSubmitButton->setActivatedSubmit(false);
// Return if the search string is not valid.
if (!isValidSearchString)
return;
String action(formElement->action());
KURL url(formElement->document()->completeURL(action.isNull() ? "" : action));
RefPtr<FormData> formData = FormData::create(encodedString);
url.setQuery(formData->flattenToString());
m_url = url;
m_encoding = String(encoding.name());
}
void TextResourceDecoder::setEncoding(const WTF::TextEncoding& encoding, EncodingSource source)
{
// In case the encoding didn't exist, we keep the old one (helps some sites specifying invalid encodings).
if (!encoding.isValid())
return;
// When encoding comes from meta tag (i.e. it cannot be XML files sent via XHR),
// treat x-user-defined as windows-1252 (bug 18270)
if (source == EncodingFromMetaTag && !strcasecmp(encoding.name(), "x-user-defined"))
m_encoding = "windows-1252";
else if (source == EncodingFromMetaTag || source == EncodingFromXMLHeader || source == EncodingFromCSSCharset)
m_encoding = encoding.closestByteBasedEquivalent();
else
m_encoding = encoding;
m_codec.clear();
m_source = source;
}
inline std::unique_ptr<TextResourceDecoder>
TextResourceDecoderBuilder::createDecoderInstance(Document* document) {
const WTF::TextEncoding encodingFromDomain =
getEncodingFromDomain(document->url());
if (LocalFrame* frame = document->frame()) {
if (Settings* settings = frame->settings()) {
// Disable autodetection for XML to honor the default encoding (UTF-8) for
// unlabelled documents.
return TextResourceDecoder::create(
m_mimeType,
encodingFromDomain.isValid() ? encodingFromDomain
: settings->defaultTextEncodingName(),
!DOMImplementation::isXMLMIMEType(m_mimeType));
}
}
return TextResourceDecoder::create(m_mimeType, encodingFromDomain);
}
static bool isCharsetSpecifyingNode(Node* node)
{
if (!node->isHTMLElement())
return false;
HTMLElement* element = toHTMLElement(node);
if (!element->hasTagName(HTMLNames::metaTag))
return false;
HTMLMetaCharsetParser::AttributeList attributes;
if (element->hasAttributes()) {
for (unsigned i = 0; i < element->attributeCount(); ++i) {
const Attribute* attribute = element->attributeItem(i);
// FIXME: We should deal appropriately with the attribute if they have a namespace.
attributes.append(std::make_pair(attribute->name().toString(), attribute->value().string()));
}
}
WTF::TextEncoding textEncoding = HTMLMetaCharsetParser::encodingFromMetaAttributes(attributes);
return textEncoding.isValid();
}