/****************************************************************************

**

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the examples of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include <QtGui>

#include <QtWebKit>

#include "mainwindow.h"

//! [1]

MainWindow::MainWindow()

{

    progress = 0;

    QFile file;

    file.setFileName(":/jquery.min.js");

    file.open(QIODevice::ReadOnly);

    jQuery = file.readAll();

    file.close();

//! [1]

    QNetworkProxyFactory::setUseSystemConfiguration(true);

//! [2]

    view = new QWebView(this);

    view->load(QUrl("http://www.google.com/ncr"));

    connect(view, SIGNAL(loadFinished(bool)), SLOT(adjustLocation()));

    connect(view, SIGNAL(titleChanged(QString)), SLOT(adjustTitle()));

    connect(view, SIGNAL(loadProgress(int)), SLOT(setProgress(int)));

    connect(view, SIGNAL(loadFinished(bool)), SLOT(finishLoading(bool)));

    locationEdit = new QLineEdit(this);

    locationEdit->setSizePolicy(QSizePolicy::Expanding, locationEdit->sizePolicy().verticalPolicy());

    connect(locationEdit, SIGNAL(returnPressed()), SLOT(changeLocation()));

    QToolBar *toolBar = addToolBar(tr("Navigation"));

    toolBar->addAction(view->pageAction(QWebPage::Back));

    toolBar->addAction(view->pageAction(QWebPage::Forward));

    toolBar->addAction(view->pageAction(QWebPage::Reload));

    toolBar->addAction(view->pageAction(QWebPage::Stop));

    toolBar->addWidget(locationEdit);

//! [2]

//! [3]

    QMenu *effectMenu = menuBar()->addMenu(tr("&Effect"));

    effectMenu->addAction("Highlight all links", this, SLOT(highlightAllLinks()));

    rotateAction = new QAction(this);

    rotateAction->setIcon(style()->standardIcon(QStyle::SP_FileDialogDetailedView));

    rotateAction->setCheckable(true);

    rotateAction->setText(tr("Turn images upside down"));

    connect(rotateAction, SIGNAL(toggled(bool)), this, SLOT(rotateImages(bool)));

    effectMenu->addAction(rotateAction);

    QMenu *toolsMenu = menuBar()->addMenu(tr("&Tools"));

    toolsMenu->addAction(tr("Remove GIF images"), this, SLOT(removeGifImages()));

    toolsMenu->addAction(tr("Remove all inline frames"), this, SLOT(removeInlineFrames()));

    toolsMenu->addAction(tr("Remove all object elements"), this, SLOT(removeObjectElements()));

    toolsMenu->addAction(tr("Remove all embedded elements"), this, SLOT(removeEmbeddedElements()));

    setCentralWidget(view);

    setUnifiedTitleAndToolBarOnMac(true);

}

//! [3]

//! [4]

void MainWindow::adjustLocation()

{

    locationEdit->setText(view->url().toString());

}

void MainWindow::changeLocation()

{

    QUrl url = QUrl(locationEdit->text());

    view->load(url);

    view->setFocus();

}

//! [4]

//! [5]

void MainWindow::adjustTitle()

{

    if (progress <= 0 || progress >= 100)

        setWindowTitle(view->title());

    else

        setWindowTitle(QString("%1 (%2%)").arg(view->title()).arg(progress));

}

void MainWindow::setProgress(int p)

{

    progress = p;

    adjustTitle();

}

//! [5]

//! [6]

void MainWindow::finishLoading(bool)

{

    progress = 100;

    adjustTitle();

    view->page()->mainFrame()->evaluateJavaScript(jQuery);

    rotateImages(rotateAction->isChecked());

}

//! [6]

//! [7]

void MainWindow::highlightAllLinks()

{

    QString code = "$('a').each( function () { $(this).css('background-color', 'yellow') } )";

    view->page()->mainFrame()->evaluateJavaScript(code);

}

//! [7]

//! [8]

void MainWindow::rotateImages(bool invert)

{

    QString code;

    if (invert)

        code = "$('img').each( function () { $(this).css('-webkit-transition', '-webkit-transform 2s'); $(this).css('-webkit-transform', 'rotate(180deg)') } )";

    else

        code = "$('img').each( function () { $(this).css('-webkit-transition', '-webkit-transform 2s'); $(this).css('-webkit-transform', 'rotate(0deg)') } )";

    view->page()->mainFrame()->evaluateJavaScript(code);

}

//! [8]

//! [9]

void MainWindow::removeGifImages()

{

    QString code = "$('[src*=gif]').remove()";

    view->page()->mainFrame()->evaluateJavaScript(code);

}

void MainWindow::removeInlineFrames()

{

    QString code = "$('iframe').remove()";

    view->page()->mainFrame()->evaluateJavaScript(code);

}

void MainWindow::removeObjectElements()

{

    QString code = "$('object').remove()";

    view->page()->mainFrame()->evaluateJavaScript(code);

}

void MainWindow::removeEmbeddedElements()

{

    QString code = "$('embed').remove()";

    view->page()->mainFrame()->evaluateJavaScript(code);

}

//! [9]