Qt 4.7: formextractor.cpp Example File (webkit/formextractor/formextractor.cpp)

Qt Reference Documentation

# formextractor.cpp Example File

webkit/formextractor/formextractor.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
     **     the names of its contributors may be used to endorse or promote
     **     products derived from this software without specific prior written
     **     permission.
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include "formextractor.h"

     #include <QWebElement>

     FormExtractor::FormExtractor(QWidget *parent, Qt::WFlags flags)
         : QWidget(parent, flags)
     {
         ui.setupUi(this);
         ui.webView->setUrl(QUrl("qrc:/form.html"));
         connect(ui.webView->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
                 this, SLOT(populateJavaScriptWindowObject()));
         resize(300, 300);
     }

     FormExtractor::~FormExtractor()
     {
     }

     void FormExtractor::submit()
     {
         QWebFrame *frame = ui.webView->page()->mainFrame();

         QWebElement firstName = frame->findFirstElement("#firstname");
         QWebElement lastName = frame->findFirstElement("#lastname");
         QWebElement maleGender = frame->findFirstElement("#genderMale");
         QWebElement femaleGender = frame->findFirstElement("#genderFemale");
         QWebElement updates = frame->findFirstElement("#updates");

         ui.firstNameEdit->setText(firstName.evaluateJavaScript("this.value").toString());
         ui.lastNameEdit->setText(lastName.evaluateJavaScript("this.value").toString());

         if (maleGender.evaluateJavaScript("this.checked").toBool())
             ui.genderEdit->setText(maleGender.evaluateJavaScript("this.value").toString());
         else if (femaleGender.evaluateJavaScript("this.checked").toBool())
             ui.genderEdit->setText(femaleGender.evaluateJavaScript("this.value").toString());

         if (updates.evaluateJavaScript("this.checked").toBool())
             ui.updatesEdit->setText("Yes");
         else
             ui.updatesEdit->setText("No");
     }

     void FormExtractor::populateJavaScriptWindowObject()
     {
         ui.webView->page()->mainFrame()->addToJavaScriptWindowObject("formExtractor", this);
     }