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path: root/src/libs/utils/projectintropage.cpp
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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 Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/

#include "projectintropage.h"
#include "ui_projectintropage.h"

#include <QDir>

/*!
    \class Utils::ProjectIntroPage

    \brief The ProjectIntroPage class is the standard wizard page for a project,
    letting the user choose its name
    and path.

    Looks similar to FileWizardPage, but provides additional
    functionality:
    \list
    \li Contains a description label at the top for displaying introductory text.
    \li Does on the fly validation (connected to changed()) and displays
       warnings and errors in a status label at the bottom (the page is complete
       when fully validated, validatePage() is thus not implemented).
    \endlist

    \note Careful when changing projectintropage.ui. It must have main
    geometry cleared and QLayout::SetMinimumSize constraint on the main
    layout, otherwise, QWizard will squeeze it due to its strange expanding
    hacks.
*/

namespace Utils {

struct ProjectIntroPagePrivate
{
    ProjectIntroPagePrivate();
    Ui::ProjectIntroPage m_ui;
    bool m_complete;
    // Status label style sheets
    const QString m_errorStyleSheet;
    const QString m_warningStyleSheet;
    const QString m_hintStyleSheet;
    bool m_forceSubProject;
    QStringList m_projectDirectories;
};

ProjectIntroPagePrivate::  ProjectIntroPagePrivate() :
    m_complete(false),
    m_errorStyleSheet(QLatin1String("background : red;")),
    m_warningStyleSheet(QLatin1String("background : yellow;")),
    m_hintStyleSheet(),
    m_forceSubProject(false)
{
}

ProjectIntroPage::ProjectIntroPage(QWidget *parent) :
    QWizardPage(parent),
    d(new ProjectIntroPagePrivate)
{
    d->m_ui.setupUi(this);
    hideStatusLabel();
    d->m_ui.nameLineEdit->setInitialText(tr("<Enter_Name>"));
    d->m_ui.nameLineEdit->setFocus();
    d->m_ui.projectLabel->setVisible(d->m_forceSubProject);
    d->m_ui.projectComboBox->setVisible(d->m_forceSubProject);
    d->m_ui.pathChooser->setDisabled(d->m_forceSubProject);
    d->m_ui.projectsDirectoryCheckBox->setDisabled(d->m_forceSubProject);
    connect(d->m_ui.pathChooser, SIGNAL(changed(QString)), this, SLOT(slotChanged()));
    connect(d->m_ui.nameLineEdit, SIGNAL(textChanged(QString)), this, SLOT(slotChanged()));
    connect(d->m_ui.pathChooser, SIGNAL(validChanged()), this, SLOT(slotChanged()));
    connect(d->m_ui.pathChooser, SIGNAL(returnPressed()), this, SLOT(slotActivated()));
    connect(d->m_ui.nameLineEdit, SIGNAL(validReturnPressed()), this, SLOT(slotActivated()));
    connect(d->m_ui.projectComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(slotChanged()));
}

void ProjectIntroPage::insertControl(int row, QWidget *label, QWidget *control)
{
    d->m_ui.formLayout->insertRow(row, label, control);
}

ProjectIntroPage::~ProjectIntroPage()
{
    delete d;
}

QString ProjectIntroPage::projectName() const
{
    return d->m_ui.nameLineEdit->text();
}

QString ProjectIntroPage::path() const
{
    return d->m_ui.pathChooser->path();
}

void ProjectIntroPage::setPath(const QString &path)
{
    d->m_ui.pathChooser->setPath(path);
}

void ProjectIntroPage::setProjectName(const QString &name)
{
    d->m_ui.nameLineEdit->setText(name);
    d->m_ui.nameLineEdit->selectAll();
}

QString ProjectIntroPage::description() const
{
    return d->m_ui.descriptionLabel->text();
}

void ProjectIntroPage::setDescription(const QString &description)
{
    d->m_ui.descriptionLabel->setText(description);
}

bool ProjectIntroPage::isComplete() const
{
    return d->m_complete;
}

bool ProjectIntroPage::validate()
{
    if (d->m_forceSubProject) {
        int index = d->m_ui.projectComboBox->currentIndex();
        if (index == 0)
            return false;
        d->m_ui.pathChooser->setPath(d->m_projectDirectories.at(index));
    }
    // Validate and display status
    if (!d->m_ui.pathChooser->isValid()) {
        displayStatusMessage(Error, d->m_ui.pathChooser->errorMessage());
        return false;
    }

    // Name valid? Ignore 'DisplayingInitialText' state.
    bool nameValid = false;
    switch (d->m_ui.nameLineEdit->state()) {
    case BaseValidatingLineEdit::Invalid:
        displayStatusMessage(Error, d->m_ui.nameLineEdit->errorMessage());
        return false;
    case BaseValidatingLineEdit::DisplayingInitialText:
        break;
    case BaseValidatingLineEdit::Valid:
        nameValid = true;
        break;
    }

    // Check existence of the directory
    QString projectDir = path();
    projectDir += QDir::separator();
    projectDir += d->m_ui.nameLineEdit->text();
    const QFileInfo projectDirFile(projectDir);
    if (!projectDirFile.exists()) { // All happy
        hideStatusLabel();
        return nameValid;
    }

    if (projectDirFile.isDir()) {
        displayStatusMessage(Warning, tr("The project already exists."));
        return nameValid;
    }
    // Not a directory, but something else, likely causing directory creation to fail
    displayStatusMessage(Error, tr("A file with that name already exists."));
    return false;
}

void ProjectIntroPage::slotChanged()
{
    const bool newComplete = validate();
    if (newComplete != d->m_complete) {
        d->m_complete = newComplete;
        emit completeChanged();
    }
}

void ProjectIntroPage::slotActivated()
{
    if (d->m_complete)
        emit activated();
}

bool ProjectIntroPage::forceSubProject() const
{
    return d->m_forceSubProject;
}

void ProjectIntroPage::setForceSubProject(bool force)
{
    d->m_forceSubProject = force;
    d->m_ui.projectLabel->setVisible(d->m_forceSubProject);
    d->m_ui.projectComboBox->setVisible(d->m_forceSubProject);
    d->m_ui.pathChooser->setDisabled(d->m_forceSubProject);
    d->m_ui.projectsDirectoryCheckBox->setDisabled(d->m_forceSubProject);
}

void ProjectIntroPage::setProjectList(const QStringList &projectList)
{
    d->m_ui.projectComboBox->clear();
    d->m_ui.projectComboBox->addItems(projectList);
}

void ProjectIntroPage::setProjectDirectories(const QStringList &directoryList)
{
    d->m_projectDirectories = directoryList;
}

int ProjectIntroPage::projectIndex() const
{
    return d->m_ui.projectComboBox->currentIndex();
}

void ProjectIntroPage::displayStatusMessage(StatusLabelMode m, const QString &s)
{
    switch (m) {
    case Error:
        d->m_ui.stateLabel->setStyleSheet(d->m_errorStyleSheet);
        break;
    case Warning:
        d->m_ui.stateLabel->setStyleSheet(d->m_warningStyleSheet);
        break;
    case Hint:
        d->m_ui.stateLabel->setStyleSheet(d->m_hintStyleSheet);
        break;
    }
    d->m_ui.stateLabel->setText(s);
}

void ProjectIntroPage::hideStatusLabel()
{
    displayStatusMessage(Hint, QString());
}

bool ProjectIntroPage::useAsDefaultPath() const
{
    return d->m_ui.projectsDirectoryCheckBox->isChecked();
}

void ProjectIntroPage::setUseAsDefaultPath(bool u)
{
    d->m_ui.projectsDirectoryCheckBox->setChecked(u);
}

} // namespace Utils