NewProjectDialog.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/Project/NewProjectDialog.cpp
//! @brief     Implements class NewProjectDialog
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#include "GUI/View/Project/NewProjectDialog.h"
#include "GUI/Application/ApplicationSettings.h"
#include "GUI/Model/Project/ProjectDocument.h"
#include "GUI/Support/IO/ProjectUtils.h"
#include <QFileDialog>
#include <QGroupBox>
#include <QLabel>
#include <QPushButton>
#include <QVBoxLayout>
 
NewProjectDialog::NewProjectDialog(QWidget* parent, const QString& workingDirectory,
                                   const QString& projectName)
    : QDialog(parent)
    , m_projectNameEdit(nullptr)
    , m_workDirEdit(nullptr)
    , m_browseButton(nullptr)
    , m_warningLabel(nullptr)
    , m_cancelButton(nullptr)
    , m_createButton(nullptr)
    , m_valid_projectName(true)
    , m_valid_projectPath(true)
 
{
    setMinimumSize(480, 280);
    setWindowTitle("Save project");
 
    auto* nameLabel = new QLabel("Project name:");
    m_projectNameEdit = new QLineEdit;
    m_projectNameEdit->setText(projectName);
    connect(m_projectNameEdit, &QLineEdit::textEdited, this,
            &NewProjectDialog::checkIfProjectNameIsValid);
    nameLabel->setBuddy(m_projectNameEdit);
 
    auto* parentDirLabel = new QLabel("Save in:");
    m_workDirEdit = new QLineEdit;
    m_workDirEdit->setText(QDir::toNativeSeparators(QDir::homePath()));
    connect(m_workDirEdit, &QLineEdit::textEdited, this,
            &NewProjectDialog::checkIfProjectPathIsValid);
    parentDirLabel->setBuddy(m_workDirEdit);
 
    m_browseButton = new QPushButton("Browse");
    connect(m_browseButton, &QPushButton::clicked, this, &NewProjectDialog::onBrowseDirectory);
 
    m_warningLabel = new QLabel();
 
    m_createButton = new QPushButton("Save");
    connect(m_createButton, &QPushButton::clicked, this, &NewProjectDialog::createProjectDir);
    m_createButton->setDefault(true);
    m_cancelButton = new QPushButton("Cancel");
    connect(m_cancelButton, &QPushButton::clicked, this, &NewProjectDialog::reject);
 
    auto* projectGroup = new QGroupBox("Project name and location");
 
    auto* layout = new QGridLayout;
    layout->addWidget(nameLabel, 0, 0);
    layout->addWidget(m_projectNameEdit, 0, 1);
    layout->addWidget(parentDirLabel, 1, 0);
    layout->addWidget(m_workDirEdit, 1, 1);
    layout->addWidget(m_browseButton, 1, 2);
 
    projectGroup->setLayout(layout);
 
    auto* buttonsLayout = new QHBoxLayout;
    buttonsLayout->addStretch(1);
    buttonsLayout->addWidget(m_createButton);
    buttonsLayout->addWidget(m_cancelButton);
 
    auto* mainLayout = new QVBoxLayout;
    mainLayout->addWidget(projectGroup);
    mainLayout->addWidget(m_warningLabel);
    mainLayout->addStretch();
    mainLayout->addLayout(buttonsLayout);
 
    setLayout(mainLayout);
 
    setWorkingDirectory(workingDirectory);
}
 
QString NewProjectDialog::getWorkingDirectory() const
{
    return QDir::fromNativeSeparators(m_workDirEdit->text());
}
 
void NewProjectDialog::setWorkingDirectory(const QString& text)
{
    m_workDirEdit->setText(QDir::toNativeSeparators(text));
}
 
QString NewProjectDialog::getProjectFileName() const
{
    QString projectDir = getWorkingDirectory() + QString("/") + getProjectName();
    QString projectFile = getProjectName() + GUI::Project::Utils::projectFileExtension;
    return projectDir + QString("/") + projectFile;
}
 
//! calls directory selection dialog
void NewProjectDialog::onBrowseDirectory()
{
    QFileDialog::Options options = QFileDialog::DontResolveSymlinks | QFileDialog::ShowDirsOnly;
 
    if (!appSettings->useNativeFileDialog())
        options |= QFileDialog::DontUseNativeDialog;
 
    const QString dirname =
        QFileDialog::getExistingDirectory(this, "Select directory", getWorkingDirectory(), options);
 
    if (dirname.isEmpty())
        return;
 
    checkIfProjectPathIsValid(dirname);
    checkIfProjectNameIsValid(getProjectName());
}
 
//! Checks whether ProjectPath is valid and sets warning state accordingly. Corresponding directory
//! should exists.
void NewProjectDialog::checkIfProjectPathIsValid(const QString& dirname)
{
    if (QFile::exists(dirname)) {
        setValidProjectPath(true);
        setWorkingDirectory(dirname);
    } else {
        setValidProjectPath(false);
    }
    updateWarningStatus();
}
 
//! Checks whether project name is valid and sets warning state accordingly. There should not be the
//! directory with such name in ProjectPath
void NewProjectDialog::checkIfProjectNameIsValid(const QString& projectName)
{
    const QDir projectDir = getWorkingDirectory() + "/" + projectName;
    setValidProjectName(!projectDir.exists());
    updateWarningStatus();
}
 
//! sets flags whether project name is valid and then updates color of LineEdit
//! and warning message
void NewProjectDialog::setValidProjectName(bool status)
{
    m_valid_projectName = status;
    QPalette palette;
    palette.setColor(QPalette::Text, m_valid_projectPath ? Qt::black : Qt::darkRed);
    m_projectNameEdit->setPalette(palette);
}
 
//! sets flags wether project path is valid and then updates color of LineEdit
//! and warning message
void NewProjectDialog::setValidProjectPath(bool status)
{
    m_valid_projectPath = status;
    QPalette palette;
    palette.setColor(QPalette::Text, m_valid_projectPath ? Qt::black : Qt::darkRed);
    m_workDirEdit->setPalette(palette);
}
 
//! updates warning label depending on validity of project name and path
void NewProjectDialog::updateWarningStatus()
{
    if (m_valid_projectPath && m_valid_projectName) {
        m_createButton->setEnabled(true);
        m_warningLabel->setText("");
    } else if (!m_valid_projectPath) {
        m_createButton->setEnabled(false);
        m_warningLabel->setText("<font color='darkRed'> The path '"
                                + QDir::toNativeSeparators(getWorkingDirectory())
                                + "' does not exist. </font>");
    } else if (!m_valid_projectName) {
        m_createButton->setEnabled(false);
        if (getProjectName().isEmpty())
            m_warningLabel->setText("<font color='darkRed'> Please specify project name. </font>");
        else {
            m_warningLabel->setText("<font color='darkRed'> The directory '" + getProjectName()
                                    + "' already exists. </font>");
        }
    }
}
 
//! creates directory with selected ProjectName in selected ProjectPath
void NewProjectDialog::createProjectDir()
{
    QDir parentDir = getWorkingDirectory();
    if (!parentDir.mkdir(getProjectName())) {
        m_warningLabel->setText("<font color='darkRed'> Can't make subdirectory' '"
                                + getProjectName() + "' in '"
                                + QDir::toNativeSeparators(getWorkingDirectory()) + "' </font>");
    } else {
        accept();
    }
}