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seleniumhq
GitHub Repository: seleniumhq/selenium
 Path: blob/trunk/cpp/iedriver/CommandHandlers/GetActiveElementCommandHandler.cpp
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// Licensed to the Software Freedom Conservancy (SFC) under one

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// or more contributor license agreements. See the NOTICE file

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// distributed with this work for additional information

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// regarding copyright ownership. The SFC licenses this file

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// to you under the Apache License, Version 2.0 (the "License");

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// you may not use this file except in compliance with the License.

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// You may obtain a copy of the License at

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//

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//     http://www.apache.org/licenses/LICENSE-2.0

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//

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// Unless required by applicable law or agreed to in writing, software

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// distributed under the License is distributed on an "AS IS" BASIS,

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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

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// See the License for the specific language governing permissions and

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// limitations under the License.

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#include "GetActiveElementCommandHandler.h"

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#include "errorcodes.h"

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#include "../Browser.h"

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#include "../Element.h"

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#include "../IECommandExecutor.h"

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namespace webdriver {

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GetActiveElementCommandHandler::GetActiveElementCommandHandler(void) {

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}

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GetActiveElementCommandHandler::~GetActiveElementCommandHandler(void) {

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}

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void GetActiveElementCommandHandler::ExecuteInternal(

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  const IECommandExecutor& executor,

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  const ParametersMap& command_parameters,

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  Response* response) {

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  BrowserHandle browser_wrapper;

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  int status_code = executor.GetCurrentBrowser(&browser_wrapper);

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  if (status_code != WD_SUCCESS) {

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    response->SetErrorResponse(ERROR_NO_SUCH_WINDOW, "Unable to get browser");

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    return;

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  }

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  CComPtr<IHTMLDocument2> doc;

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  browser_wrapper->GetDocument(&doc);

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  if (!doc) {

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    response->SetErrorResponse(ERROR_NO_SUCH_WINDOW, "Document is not found");

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    return;

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  }

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  CComPtr<IHTMLElement> element(NULL);

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  HRESULT hr = doc->get_activeElement(&element);

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  if (FAILED(hr)) {

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    // For some contentEditable frames, the <body> element will be the

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    // active element. However, to properly have focus, we must explicitly

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    // set focus to the element.

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    CComPtr<IHTMLBodyElement> body_element;

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    HRESULT body_hr = element->QueryInterface<IHTMLBodyElement>(&body_element);

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    if (body_element) {

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      CComPtr<IHTMLElement2> body_element2;

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      body_element->QueryInterface<IHTMLElement2>(&body_element2);

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      body_element2->focus();

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    }

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  }

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  // If we don't have an element at this point, but the document

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  // has a body element, we should return a null result, as that's

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  // what document.activeElement() returns. However, if there is no

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  // body element, throw no such element.

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  if (!element) {

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    CComPtr<IHTMLElement> body;

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    hr = doc->get_body(&body);

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    if (body) {

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      response->SetSuccessResponse(Json::Value::null);

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    } else {

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      response->SetErrorResponse(ERROR_NO_SUCH_ELEMENT, "No active element found, and no body element present.");

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    }

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    return;

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  }

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  if (element) {

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    IECommandExecutor& mutable_executor = const_cast<IECommandExecutor&>(executor);

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    ElementHandle element_wrapper;

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    mutable_executor.AddManagedElement(element, &element_wrapper);

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    response->SetSuccessResponse(element_wrapper->ConvertToJson());

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  } else {

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    response->SetErrorResponse(ERROR_NO_SUCH_ELEMENT, "An unexpected error occurred getting the active element");

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  }

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}

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} // namespace webdriver

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