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/****************************************************************************
**
** Copyright (C) 2014 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 <QtGui>
#include <QtWebKit>
#include "mainwindow.h"
//! [0]
MainWindow::MainWindow()
{
createActions();
createMenus();
centralWidget = new Previewer(this);
setCentralWidget(centralWidget);
connect(centralWidget->webView, SIGNAL(loadFinished(bool)),
this, SLOT(updateTextEdit()));
setStartupText();
}
//! [0]
//! [1]
void MainWindow::createActions()
{
openAct = new QAction(tr("&Open..."), this);
openAct->setShortcuts(QKeySequence::Open);
openAct->setStatusTip(tr("Open an existing HTML file"));
connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
openUrlAct = new QAction(tr("&Open URL..."), this);
openUrlAct->setShortcut(tr("Ctrl+U"));
openUrlAct->setStatusTip(tr("Open a URL"));
connect(openUrlAct, SIGNAL(triggered()), this, SLOT(openUrl()));
//! [1]
saveAct = new QAction(tr("&Save"), this);
saveAct->setShortcuts(QKeySequence::Save);
saveAct->setStatusTip(tr("Save the HTML file to disk"));
connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));
exitAct = new QAction(tr("E&xit"), this);
exitAct->setStatusTip(tr("Exit the application"));
exitAct->setShortcuts(QKeySequence::Quit);
connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
aboutAct = new QAction(tr("&About"), this);
aboutAct->setStatusTip(tr("Show the application's About box"));
connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
aboutQtAct = new QAction(tr("About &Qt"), this);
aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
}
//! [2]
void MainWindow::createMenus()
{
fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(openAct);
fileMenu->addAction(openUrlAct);
fileMenu->addAction(saveAct);
fileMenu->addSeparator();
fileMenu->addAction(exitAct);
menuBar()->addSeparator();
helpMenu = menuBar()->addMenu(tr("&Help"));
helpMenu->addAction(aboutAct);
helpMenu->addAction(aboutQtAct);
}
//! [2]
//! [3]
void MainWindow::about()
{
QMessageBox::about(this, tr("About Previewer"),
tr("The <b>Previewer</b> example demonstrates how to "
"view HTML documents using a QWebView."));
}
//! [3]
//! [4]
void MainWindow::open()
{
QString fileName = QFileDialog::getOpenFileName(this);
if (!fileName.isEmpty()) {
// read from file
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly)) {
QMessageBox::information(this, tr("Unable to open file"),
file.errorString());
return;
}
QTextStream out(&file);
QString output = out.readAll();
// display contents
centralWidget->plainTextEdit->setPlainText(output);
centralWidget->setBaseUrl(QUrl::fromLocalFile(fileName));
}
}
//! [4]
//! [5]
void MainWindow::openUrl()
{
bool ok;
QString url = QInputDialog::getText(this, tr("Enter a URL"),
tr("URL:"), QLineEdit::Normal, "http://", &ok);
if (ok && !url.isEmpty()) {
centralWidget->webView->setUrl(url);
}
}
//! [5]
//! [6]
void MainWindow::save()
{
QString content = centralWidget->plainTextEdit->toPlainText();
QString fileName = QFileDialog::getSaveFileName(this);
if (!fileName.isEmpty()) {
// save to file
QFile file(fileName);
if (!file.open(QIODevice::WriteOnly)) {
QMessageBox::information(this, tr("Unable to open file"),
file.errorString());
return;
}
QTextStream in(&file);
in << content;
}
}
//! [6]
//! [7]
void MainWindow::updateTextEdit()
{
QWebFrame *mainFrame = centralWidget->webView->page()->mainFrame();
QString frameText = mainFrame->toHtml();
centralWidget->plainTextEdit->setPlainText(frameText);
}
//! [7]
//! [8]
void MainWindow::setStartupText()
{
QString string = "<html><body><h1>HTML Previewer</h1>"
" <p>This example shows you how to use QWebView to"
" preview HTML data written in a QPlainTextEdit.</p>"
" </body></html>";
centralWidget->webView->setHtml(string);
}
//! [8]
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