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 /***************************************************************************
  *   Copyright (C) 2005-2017 by Linuxstopmotion contributors;              *
  *   see the AUTHORS file for details.                                     *
  *                                                                         *
  *   This program 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 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
  *   This program 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 this program; if not, write to the                         *
  *   Free Software Foundation, Inc.,                                       *
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 #include "externalcommand.h"
 
 #include <QByteArray>
 #include <QChar>
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QMessageBox>
 #include <QTextCursor>
 #include <QVBoxLayout>
 
 
 ExternalCommand::ExternalCommand(QWidget *parent)
     : QWidget(parent)
 {
     vboxLayout = new QVBoxLayout(this);
     vboxLayout->setSpacing(6);
     vboxLayout->setContentsMargins(9, 9, 9, 9);
     
     textBrowser = new QTextBrowser(this);
     vboxLayout->addWidget(textBrowser);
 
     hboxLayout = new QHBoxLayout();
     hboxLayout->setSpacing(6);
     hboxLayout->setContentsMargins(0, 0, 0, 0);
     
     label = new QLabel(this);
     label->setText(tr("Input to program:"));
     hboxLayout->addWidget(label);
 
     lineEdit = new QLineEdit(this);
     connect(lineEdit, SIGNAL(returnPressed()), this, SLOT(submitInputToProgram())); 
     lineEdit->setEchoMode(QLineEdit::Normal);
     hboxLayout->addWidget(lineEdit);
 
     submitButton = new QPushButton(this);
     connect(submitButton, SIGNAL(clicked()), this, SLOT(submitInputToProgram()));
     submitButton->setText(tr("Submit"));
     hboxLayout->addWidget(submitButton);
 
     closeButton = new QPushButton(this);
     connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
     closeButton->setEnabled(false);
     closeButton->setText(tr("Close"));
     hboxLayout->addWidget(closeButton);
 
     vboxLayout->addLayout(hboxLayout);
     
     process = new QProcess(this);
     connect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(readFromStandardOutput())); 
     connect(process, SIGNAL(readyReadStandardError()), this, SLOT(readFromStandardError())); 
     connect(process, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(displayExitStatus(int, QProcess::ExitStatus)));
     
     resize(QSize(593, 363).expandedTo(minimumSizeHint()));
     
     setAttribute(Qt::WA_DeleteOnClose);
     setWindowTitle( tr("Output from external command") );
 }
 
 
 void ExternalCommand::run(const QString &command)
 {
 #if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
     QStringList arguments = QProcess::splitCommand(command);
     const QString executalbe = arguments.takeFirst();
     process->start(executalbe, arguments);
 #else
     process->start(command);
 #endif
 }
 
 
 void ExternalCommand::readFromStandardOutput()
 {
     textBrowser->ensureCursorVisible();
     QTextCursor curs = textBrowser->textCursor();
     curs.movePosition(QTextCursor::StartOfLine, QTextCursor::KeepAnchor);
     curs.insertText(process->readAllStandardOutput());
 }
 
 
 void ExternalCommand::readFromStandardError()
 {
     textBrowser->ensureCursorVisible();
     QTextCursor curs = textBrowser->textCursor();
     curs.movePosition(QTextCursor::StartOfLine, QTextCursor::KeepAnchor);
     curs.insertText(process->readAllStandardError());
 }
 
 
 void ExternalCommand::submitInputToProgram()
 {
     if ( lineEdit->isModified() ) {
         QString input = lineEdit->text();
         input.append('\n');
         process->write(input.toLocal8Bit());
         lineEdit->setText("");
     }
 }
 
 
 void ExternalCommand::displayExitStatus(int exitCode, QProcess::ExitStatus)
 {
     if (exitCode != 0) {
         QMessageBox::warning(this, tr("Result"), tr("Failed!"));
     }
     else {                                                     
         QMessageBox::information(this, tr("Result"), tr("Successful!"));
     }
     
     lineEdit->setEnabled(false);
     submitButton->setEnabled(false);
     closeButton->setEnabled(true);
 }