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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include <QtWebEngineWidgets>
#include "mainwindow.h"
MainWindow::MainWindow(const QUrl& url)
{
setAttribute(Qt::WA_DeleteOnClose, true);
progress = 0;
QFile file;
file.setFileName(":/jquery.min.js");
file.open(QIODevice::ReadOnly);
jQuery = file.readAll();
jQuery.append("\nvar qt = { 'jQuery': jQuery.noConflict(true) };");
file.close();
view = new QWebEngineView(this);
view->load(url);
connect(view, &QWebEngineView::loadFinished, this, &MainWindow::adjustLocation);
connect(view, &QWebEngineView::titleChanged, this, &MainWindow::adjustTitle);
connect(view, &QWebEngineView::loadProgress, this, &MainWindow::setProgress);
connect(view, &QWebEngineView::loadFinished, this, &MainWindow::finishLoading);
locationEdit = new QLineEdit(this);
locationEdit->setSizePolicy(QSizePolicy::Expanding, locationEdit->sizePolicy().verticalPolicy());
connect(locationEdit, &QLineEdit::returnPressed, this, &MainWindow::changeLocation);
QToolBar *toolBar = addToolBar(tr("Navigation"));
toolBar->addAction(view->pageAction(QWebEnginePage::Back));
toolBar->addAction(view->pageAction(QWebEnginePage::Forward));
toolBar->addAction(view->pageAction(QWebEnginePage::Reload));
toolBar->addAction(view->pageAction(QWebEnginePage::Stop));
toolBar->addWidget(locationEdit);
QMenu *viewMenu = menuBar()->addMenu(tr("&View"));
QAction *viewSourceAction = new QAction(tr("Page Source"), this);
connect(viewSourceAction, &QAction::triggered, this, &MainWindow::viewSource);
viewMenu->addAction(viewSourceAction);
QMenu *effectMenu = menuBar()->addMenu(tr("&Effect"));
effectMenu->addAction(tr("Highlight all links"), this, &MainWindow::highlightAllLinks);
rotateAction = new QAction(this);
rotateAction->setIcon(style()->standardIcon(QStyle::SP_FileDialogDetailedView));
rotateAction->setCheckable(true);
rotateAction->setText(tr("Turn images upside down"));
connect(rotateAction, &QAction::toggled, this, &MainWindow::rotateImages);
effectMenu->addAction(rotateAction);
QMenu *toolsMenu = menuBar()->addMenu(tr("&Tools"));
toolsMenu->addAction(tr("Remove GIF images"), this, &MainWindow::removeGifImages);
toolsMenu->addAction(tr("Remove all inline frames"), this, &MainWindow::removeInlineFrames);
toolsMenu->addAction(tr("Remove all object elements"), this, &MainWindow::removeObjectElements);
toolsMenu->addAction(tr("Remove all embedded elements"), this, &MainWindow::removeEmbeddedElements);
setCentralWidget(view);
}
void MainWindow::viewSource()
{
QTextEdit *textEdit = new QTextEdit(nullptr);
textEdit->setAttribute(Qt::WA_DeleteOnClose);
textEdit->adjustSize();
textEdit->move(this->geometry().center() - textEdit->rect().center());
textEdit->show();
view->page()->toHtml([textEdit](const QString &html){
textEdit->setPlainText(html);
});
}
void MainWindow::adjustLocation()
{
locationEdit->setText(view->url().toString());
}
void MainWindow::changeLocation()
{
QUrl url = QUrl::fromUserInput(locationEdit->text());
view->load(url);
view->setFocus();
}
void MainWindow::adjustTitle()
{
if (progress <= 0 || progress >= 100)
setWindowTitle(view->title());
else
setWindowTitle(QStringLiteral("%1 (%2%)").arg(view->title()).arg(progress));
}
void MainWindow::setProgress(int p)
{
progress = p;
adjustTitle();
}
void MainWindow::finishLoading(bool)
{
progress = 100;
adjustTitle();
view->page()->runJavaScript(jQuery);
rotateImages(rotateAction->isChecked());
}
void MainWindow::highlightAllLinks()
{
QString code = QStringLiteral("qt.jQuery('a').each( function () { qt.jQuery(this).css('background-color', 'yellow') } )");
view->page()->runJavaScript(code);
}
void MainWindow::rotateImages(bool invert)
{
QString code;
if (invert)
code = QStringLiteral("qt.jQuery('img').each( function () { qt.jQuery(this).css('transition', 'transform 2s'); qt.jQuery(this).css('transform', 'rotate(180deg)') } )");
else
code = QStringLiteral("qt.jQuery('img').each( function () { qt.jQuery(this).css('transition', 'transform 2s'); qt.jQuery(this).css('transform', 'rotate(0deg)') } )");
view->page()->runJavaScript(code);
}
void MainWindow::removeGifImages()
{
QString code = QStringLiteral("qt.jQuery('[src*=gif]').remove()");
view->page()->runJavaScript(code);
}
void MainWindow::removeInlineFrames()
{
QString code = QStringLiteral("qt.jQuery('iframe').remove()");
view->page()->runJavaScript(code);
}
void MainWindow::removeObjectElements()
{
QString code = QStringLiteral("qt.jQuery('object').remove()");
view->page()->runJavaScript(code);
}
void MainWindow::removeEmbeddedElements()
{
QString code = QStringLiteral("qt.jQuery('embed').remove()");
view->page()->runJavaScript(code);
}
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