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/************************************************************************
**
** Copyright (C) 2019-2020 Kevin B. Hendricks, Stratford Ontario Canada
** Copyright (C) 2020 Doug Massay
**
** This file is part of PageEdit.
**
** PageEdit is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** PageEdit is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with PageEdit. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include <QTimer>
#include <QtWebEngineCore>
#include <QWebEnginePage>
#include <QDebug>
#include "Utility.h"
#include "WebPageEdit.h"
#define DBG if(0)
static const QString BASIC_HTML =
"<html><head><title></title></head>"
"<body style=\"background-color: %1\"></body></html>";
WebPageEdit::WebPageEdit(QObject *parent)
: QWebEnginePage(parent)
{
setBackgroundColor(Utility::WebViewBackgroundColor(true));
#if !defined(Q_OS_WIN32) && !defined(Q_OS_MAC)
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
// Qt 5.14 seems to have broken setBackgroundColor completely
// Linux is the only one there now but this may be needed for all platforms
// in the future unless Qt is fixed
setHtml(BASIC_HTML.arg(backgroundColor().name()));
#endif
#else
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
setUrl(QUrl("about:blank"));
#endif
#endif
}
// Because you can not delegate all links in QtWebEngine we must override
// here and generate our own link requests
// BUT a loadStarted signal is emitted by this page **before** this is called
// Even **before** it knows how we want to handle it!
// Once we "return false" from this a loadFinished with okay **false** is generated.
// These false loadStart and LoadFinished greatly confuse our model
// Therefore do NOT emit a signal from this method as it can create huge delays in when
// loadFinished(okay) returns (with okay as false)
bool WebPageEdit::acceptNavigationRequest(const QUrl & url, QWebEnginePage::NavigationType type, bool isMainFrame)
{
if ((type == QWebEnginePage::NavigationTypeLinkClicked) || (type == QWebEnginePage::NavigationTypeOther)) {
DBG qDebug() << "acceptNavigationRequest " << url.toString() << " , " << type << " , " << isMainFrame;
m_url = url;
QTimer::singleShot(20,this,SLOT(EmitLinkClicked()));
return false;
}
return true;
}
void WebPageEdit::EmitLinkClicked()
{
emit LinkClicked(m_url);
}
void WebPageEdit::javaScriptConsoleMessage(QWebEnginePage::JavaScriptConsoleMessageLevel level,
const QString & message, int lineNumber, const QString & sourceID)
{
const QString logEntry = message + " on line: " + QString::number(lineNumber) + " Source:" + sourceID;
qDebug() << "Javascript error: " << level << logEntry;
}
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