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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia Plc 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 <QtWidgets>
+#include <QtWebEngineWidgets>
+#include "mainwindow.h"
+
+template<typename Arg, typename R, typename C>
+struct InvokeWrapper {
+ R *receiver;
+ void (C::*memberFun)(Arg);
+ void operator()(Arg result) {
+ (receiver->*memberFun)(result);
+ }
+};
+
+template<typename Arg, typename R, typename C>
+InvokeWrapper<Arg, R, C> invoke(R *receiver, void (C::*memberFun)(Arg))
+{
+ InvokeWrapper<Arg, R, C> wrapper = {receiver, memberFun};
+ return wrapper;
+}
+
+//! [1]
+
+MainWindow::MainWindow(const QUrl& url)
+{
+ 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();
+
+//! [1]
+ view = new QWebEngineView(this);
+ view->load(url);
+ 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(QWebEnginePage::Back));
+ toolBar->addAction(view->pageAction(QWebEnginePage::Forward));
+ toolBar->addAction(view->pageAction(QWebEnginePage::Reload));
+ toolBar->addAction(view->pageAction(QWebEnginePage::Stop));
+ toolBar->addWidget(locationEdit);
+//! [1]
+
+ QMenu *viewMenu = menuBar()->addMenu(tr("&View"));
+ QAction* viewSourceAction = new QAction("Page Source", this);
+ connect(viewSourceAction, SIGNAL(triggered()), SLOT(viewSource()));
+ viewMenu->addAction(viewSourceAction);
+
+//! [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]
+
+void MainWindow::viewSource()
+{
+ QTextEdit* textEdit = new QTextEdit(NULL);
+ textEdit->setAttribute(Qt::WA_DeleteOnClose);
+ textEdit->adjustSize();
+ textEdit->move(this->geometry().center() - textEdit->rect().center());
+ textEdit->show();
+
+ view->page()->toHtml(invoke(textEdit, &QTextEdit::setPlainText));
+}
+
+//! [4]
+void MainWindow::adjustLocation()
+{
+ locationEdit->setText(view->url().toString());
+}
+
+void MainWindow::changeLocation()
+{
+ QUrl url = QUrl::fromUserInput(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()->runJavaScript(jQuery);
+
+ rotateImages(rotateAction->isChecked());
+}
+//! [6]
+
+//! [7]
+void MainWindow::highlightAllLinks()
+{
+ // We append '; undefined' after the jQuery call here to prevent a possible recursion loop and crash caused by
+ // the way the elements returned by the each iterator elements reference each other, which causes problems upon
+ // converting them to QVariants.
+ QString code = "qt.jQuery('a').each( function () { qt.jQuery(this).css('background-color', 'yellow') } ); undefined";
+ view->page()->runJavaScript(code);
+}
+//! [7]
+
+//! [8]
+void MainWindow::rotateImages(bool invert)
+{
+ QString code;
+
+ // We append '; undefined' after each of the jQuery calls here to prevent a possible recursion loop and crash caused by
+ // the way the elements returned by the each iterator elements reference each other, which causes problems upon
+ // converting them to QVariants.
+ if (invert)
+ code = "qt.jQuery('img').each( function () { qt.jQuery(this).css('-webkit-transition', '-webkit-transform 2s'); qt.jQuery(this).css('-webkit-transform', 'rotate(180deg)') } ); undefined";
+ else
+ code = "qt.jQuery('img').each( function () { qt.jQuery(this).css('-webkit-transition', '-webkit-transform 2s'); qt.jQuery(this).css('-webkit-transform', 'rotate(0deg)') } ); undefined";
+ view->page()->runJavaScript(code);
+}
+//! [8]
+
+//! [9]
+void MainWindow::removeGifImages()
+{
+ QString code = "qt.jQuery('[src*=gif]').remove()";
+ view->page()->runJavaScript(code);
+}
+
+void MainWindow::removeInlineFrames()
+{
+ QString code = "qt.jQuery('iframe').remove()";
+ view->page()->runJavaScript(code);
+}
+
+void MainWindow::removeObjectElements()
+{
+ QString code = "qt.jQuery('object').remove()";
+ view->page()->runJavaScript(code);
+}
+
+void MainWindow::removeEmbeddedElements()
+{
+ QString code = "qt.jQuery('embed').remove()";
+ view->page()->runJavaScript(code);
+}
+//! [9]
+