[libcalamares] Move RequirementsModel to libcalamares (1/2)

- Add the model and support code to libcalamares. The model still
  has some cruft that should be in the Welcome config.

src/libcalamares/CMakeLists.txt

@@ -42,6 +42,7 @@ set( libSources
     modulesystem/Module.cpp
     modulesystem/Requirement.cpp
     modulesystem/RequirementsChecker.cpp
+    modulesystem/RequirementsModel.cpp
 
     # Network service
     network/Manager.cpp

src/libcalamares/modulesystem/RequirementsModel.cpp

@@ -0,0 +1,81 @@
+/* === This file is part of Calamares - <https://github.com/calamares> ===
+ *
+ *   Copyright 2019-2020, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares 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.
+ *
+ *   Calamares 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 Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "RequirementsModel.h"
+
+namespace Calamares
+{
+
+void
+RequirementsModel::setRequirementsList( const Calamares::RequirementsList& requirements )
+{
+    emit beginResetModel();
+    m_requirements = requirements;
+
+    auto isUnSatisfied = []( const Calamares::RequirementEntry& e ) { return !e.satisfied; };
+    auto isMandatoryAndUnSatisfied = []( const Calamares::RequirementEntry& e ) { return e.mandatory && !e.satisfied; };
+
+    m_satisfiedRequirements = std::none_of( m_requirements.begin(), m_requirements.end(), isUnSatisfied );
+    m_satisfiedMandatory = std::none_of( m_requirements.begin(), m_requirements.end(), isMandatoryAndUnSatisfied );
+
+    emit satisfiedRequirementsChanged( m_satisfiedRequirements );
+    emit satisfiedMandatoryChanged();
+    emit endResetModel();
+}
+
+int
+RequirementsModel::rowCount( const QModelIndex& ) const
+{
+    return m_requirements.count();
+}
+
+QVariant
+RequirementsModel::data( const QModelIndex& index, int role ) const
+{
+    const auto requirement = m_requirements.at( index.row() );
+
+    switch ( role )
+    {
+    case Roles::Name:
+        return requirement.name;
+    case Roles::Details:
+        return requirement.enumerationText();
+    case Roles::NegatedText:
+        return requirement.negatedText();
+    case Roles::Satisfied:
+        return requirement.satisfied;
+    case Roles::Mandatory:
+        return requirement.mandatory;
+    default:
+        return QVariant();
+    }
+}
+
+QHash< int, QByteArray >
+RequirementsModel::roleNames() const
+{
+    static QHash< int, QByteArray > roles;
+    roles[ Roles::Name ] = "name";
+    roles[ Roles::Details ] = "details";
+    roles[ Roles::NegatedText ] = "negatedText";
+    roles[ Roles::Satisfied ] = "satisfied";
+    roles[ Roles::Mandatory ] = "mandatory";
+    return roles;
+}
+
+}  // namespace Calamares

src/libcalamares/modulesystem/RequirementsModel.h

@@ -0,0 +1,85 @@
+/* === This file is part of Calamares - <https://github.com/calamares> ===
+ *
+ *   Copyright 2019-2020, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares 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.
+ *
+ *   Calamares 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 Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CALAMARES_REQUIREMENTSMODEL_H
+#define CALAMARES_REQUIREMENTSMODEL_H
+
+#include "Requirement.h"
+
+#include "DllMacro.h"
+
+#include <QAbstractListModel>
+
+namespace Calamares
+{
+
+class DLLEXPORT RequirementsModel : public QAbstractListModel
+{
+    Q_OBJECT
+    Q_PROPERTY( bool satisfiedRequirements READ satisfiedRequirements NOTIFY satisfiedRequirementsChanged FINAL )
+    Q_PROPERTY( bool satisfiedMandatory READ satisfiedMandatory NOTIFY satisfiedMandatoryChanged FINAL )
+
+public:
+    using QAbstractListModel::QAbstractListModel;
+
+    enum Roles : short
+    {
+        Name,
+        Satisfied,
+        Mandatory,
+        Details,
+        NegatedText,
+        HasDetails
+    };
+
+    bool satisfiedRequirements() const { return m_satisfiedRequirements; }
+    bool satisfiedMandatory() const { return m_satisfiedMandatory; }
+
+    const Calamares::RequirementEntry& getEntry( const int& index ) const
+    {
+        if ( index > count() || index < 0 )
+        {
+            return *( new Calamares::RequirementEntry() );
+        }
+
+        return m_requirements.at( index );
+    }
+
+    void setRequirementsList( const Calamares::RequirementsList& requirements );
+
+    QVariant data( const QModelIndex& index, int role ) const override;
+    int rowCount( const QModelIndex& ) const override;
+    int count() const { return m_requirements.count(); }
+
+protected:
+    QHash< int, QByteArray > roleNames() const override;
+
+private:
+    Calamares::RequirementsList m_requirements;
+    bool m_satisfiedRequirements = false;
+    bool m_satisfiedMandatory = false;
+
+signals:
+    void satisfiedRequirementsChanged( bool value );
+    void satisfiedMandatoryChanged();
+    void warningMessageChanged();
+};
+
+}  // namespace Calamares
+
+#endif