int ElementFinder::FindElementsByCssSelector(const IESessionWindow& session, const ElementHandle parent_wrapper, const std::wstring& criteria, Json::Value* found_elements) {
int result = ENOSUCHELEMENT;
BrowserHandle browser;
result = session.GetCurrentBrowser(&browser);
if (result != SUCCESS) {
return result;
}
std::wstring script_source(L"(function() { return function(){");
script_source += atoms::SIZZLE;
script_source += L"\n";
script_source += L"var root = arguments[1] ? arguments[1] : document.documentElement;";
script_source += L"if (root['querySelectorAll']) { return root.querySelectorAll(arguments[0]); } ";
script_source += L"var results = []; Sizzle(arguments[0], root, results);";
script_source += L"return results;";
script_source += L"};})();";
CComPtr<IHTMLDocument2> doc;
browser->GetDocument(&doc);
Script script_wrapper(doc, script_source, 2);
script_wrapper.AddArgument(criteria);
if (parent_wrapper) {
// Use a copy for the parent element?
CComPtr<IHTMLElement> parent(parent_wrapper->element());
IHTMLElement* parent_element_copy;
HRESULT hr = parent.CopyTo(&parent_element_copy);
script_wrapper.AddArgument(parent_element_copy);
}
result = script_wrapper.Execute();
CComVariant snapshot = script_wrapper.result();
std::wstring get_element_count_script = L"(function(){return function() {return arguments[0].length;}})();";
Script get_element_count_script_wrapper(doc, get_element_count_script, 1);
get_element_count_script_wrapper.AddArgument(snapshot);
result = get_element_count_script_wrapper.Execute();
if (result == SUCCESS) {
if (!get_element_count_script_wrapper.ResultIsInteger()) {
result = EUNEXPECTEDJSERROR;
} else {
long length = get_element_count_script_wrapper.result().lVal;
std::wstring get_next_element_script = L"(function(){return function() {return arguments[0][arguments[1]];}})();";
for (long i = 0; i < length; ++i) {
Script get_element_script_wrapper(doc, get_next_element_script, 2);
get_element_script_wrapper.AddArgument(snapshot);
get_element_script_wrapper.AddArgument(i);
result = get_element_script_wrapper.Execute();
Json::Value json_element;
get_element_script_wrapper.ConvertResultToJsonValue(session, &json_element);
found_elements->append(json_element);
}
}
}
return result;
}
int ElementFinder::FindElementsUsingSizzle(const IECommandExecutor& executor,
const ElementHandle parent_wrapper,
const std::wstring& criteria,
Json::Value* found_elements) {
LOG(TRACE) << "Entering ElementFinder::FindElementsUsingSizzle";
int result;
if (criteria == L"") {
// Apparently, Sizzle will happily return an empty array for an empty
// string as the selector. We do not want this.
return ENOSUCHELEMENT;
}
BrowserHandle browser;
result = executor.GetCurrentBrowser(&browser);
if (result != WD_SUCCESS) {
LOG(WARN) << "Unable to get browser";
return result;
}
std::wstring script_source(L"(function() { return function(){ if (!window.Sizzle) {");
script_source += atoms::asString(atoms::SIZZLE);
script_source += L"}\n";
script_source += L"var root = arguments[1] ? arguments[1] : document.documentElement;";
script_source += L"if (root['querySelectorAll']) { return root.querySelectorAll(arguments[0]); } ";
script_source += L"var results = []; try { Sizzle(arguments[0], root, results); } catch(ex) { results = null; }";
script_source += L"return results;";
script_source += L"};})();";
CComPtr<IHTMLDocument2> doc;
browser->GetDocument(&doc);
Script script_wrapper(doc, script_source, 2);
script_wrapper.AddArgument(criteria);
if (parent_wrapper) {
// Use a copy for the parent element?
CComPtr<IHTMLElement> parent(parent_wrapper->element());
script_wrapper.AddArgument(parent);
}
result = script_wrapper.Execute();
if (result == WD_SUCCESS) {
CComVariant snapshot = script_wrapper.result();
if (snapshot.vt == VT_NULL || snapshot.vt == VT_EMPTY) {
// We explicitly caught an error from Sizzle. Return ENOSUCHELEMENT.
return ENOSUCHELEMENT;
}
std::wstring get_element_count_script = L"(function(){return function() {return arguments[0].length;}})();";
Script get_element_count_script_wrapper(doc, get_element_count_script, 1);
get_element_count_script_wrapper.AddArgument(snapshot);
result = get_element_count_script_wrapper.Execute();
if (result == WD_SUCCESS) {
*found_elements = Json::Value(Json::arrayValue);
if (!get_element_count_script_wrapper.ResultIsInteger()) {
LOG(WARN) << "Found elements count is not integer";
result = EUNEXPECTEDJSERROR;
} else {
long length = get_element_count_script_wrapper.result().lVal;
std::wstring get_next_element_script = L"(function(){return function() {return arguments[0][arguments[1]];}})();";
for (long i = 0; i < length; ++i) {
Script get_element_script_wrapper(doc, get_next_element_script, 2);
get_element_script_wrapper.AddArgument(snapshot);
get_element_script_wrapper.AddArgument(i);
result = get_element_script_wrapper.Execute();
if (result == WD_SUCCESS) {
Json::Value json_element;
get_element_script_wrapper.ConvertResultToJsonValue(executor,
&json_element);
found_elements->append(json_element);
} else {
LOG(WARN) << "Unable to get " << i << " found element";
}
}
}
} else {
LOG(WARN) << "Unable to get count of found elements";
result = EUNEXPECTEDJSERROR;
}
} else {
LOG(WARN) << "Execution returned error";
}
return result;
}
int ElementFinder::FindElementsByXPath(const IESessionWindow& session, const ElementHandle parent_wrapper, const std::wstring& criteria, Json::Value* found_elements) {
int result = ENOSUCHELEMENT;
BrowserHandle browser;
result = session.GetCurrentBrowser(&browser);
if (result != SUCCESS) {
return result;
}
result = this->InjectXPathEngine(browser);
// TODO(simon): Why does the injecting sometimes fail?
if (result != SUCCESS) {
return result;
}
// Call it
std::wstring query;
if (parent_wrapper) {
query += L"(function() { return function() {var res = document.__webdriver_evaluate(arguments[0], arguments[1], null, 7, null); return res;};})();";
} else {
query += L"(function() { return function() {var res = document.__webdriver_evaluate(arguments[0], document, null, 7, null); return res;};})();";
}
CComPtr<IHTMLDocument2> doc;
browser->GetDocument(&doc);
Script script_wrapper(doc, query, 2);
script_wrapper.AddArgument(criteria);
if (parent_wrapper) {
// Use a copy for the parent element?
CComPtr<IHTMLElement> parent(parent_wrapper->element());
IHTMLElement* parent_element_copy;
HRESULT hr = parent.CopyTo(&parent_element_copy);
script_wrapper.AddArgument(parent_element_copy);
}
result = script_wrapper.Execute();
CComVariant snapshot = script_wrapper.result();
std::wstring get_element_count_script = L"(function(){return function() {return arguments[0].snapshotLength;}})();";
Script get_element_count_script_wrapper(doc, get_element_count_script, 1);
get_element_count_script_wrapper.AddArgument(snapshot);
result = get_element_count_script_wrapper.Execute();
if (result == SUCCESS) {
if (!get_element_count_script_wrapper.ResultIsInteger()) {
result = EUNEXPECTEDJSERROR;
} else {
long length = get_element_count_script_wrapper.result().lVal;
std::wstring get_next_element_script(L"(function(){return function() {return arguments[0].iterateNext();}})();");
for (long i = 0; i < length; ++i) {
Script get_element_script_wrapper(doc, get_next_element_script, 2);
get_element_script_wrapper.AddArgument(snapshot);
get_element_script_wrapper.AddArgument(i);
result = get_element_script_wrapper.Execute();
Json::Value json_element;
get_element_script_wrapper.ConvertResultToJsonValue(session, &json_element);
found_elements->append(json_element);
}
}
}
return result;
}