Merge branch 'issue-1098'

FIXES #1098

CHANGES

@@ -31,8 +31,10 @@ This release contains contributions from (alphabetically by first name):
    display-managers.
  * *Partition* module: it is now possible to build without libparted. Since
    KPMCore may not need this library anymore, it is a dependency that will
-   be dropped as soon as it is feasible. Add `-DCMAKE_DISABLE_FIND_PACKAGE_LIBPARTED=ON`
-   to the CMake flags to do so.
+   be dropped as soon as it is feasible. Add this to the CMake flags:
+   `-DCMAKE_DISABLE_FIND_PACKAGE_LIBPARTED=ON`
+ * *Partition* module: the location that is selected for the bootloader,
+   no longer changes when a new partition is created. #1098
  * Python modules: several modules have had translations added. This is
    usually only visible when the module runs as part of the *exec* step,
    when the module's *pretty name* is displayed. In addition, some error

src/modules/partition/core/BootLoaderModel.cpp

@@ -67,6 +67,8 @@ BootLoaderModel::createMbrItems()
 void
 BootLoaderModel::update()
 {
+    beginResetModel();
+    blockSignals( true );
     clear();
     createMbrItems();
 
@@ -111,6 +113,8 @@ BootLoaderModel::update()
             createBootLoaderItem( tr( "Do not install a boot loader" ), QString(), false )
         );
     }
+    blockSignals( false );
+    endResetModel();
 }
 
 
@@ -119,12 +123,12 @@ BootLoaderModel::data( const QModelIndex& index, int role ) const
 {
     if ( role == Qt::DisplayRole )
     {
-        if ( QStandardItemModel::data( index, BootLoaderModel::BootLoaderPathRole ).toString().isEmpty() )
-            return QStandardItemModel::data( index, Qt::DisplayRole ).toString();
+        QString displayRole = QStandardItemModel::data( index, Qt::DisplayRole ).toString();
+        QString pathRole = QStandardItemModel::data( index, BootLoaderModel::BootLoaderPathRole ).toString();
+        if ( pathRole.isEmpty() )
+            return displayRole;
 
-        return tr( "%1 (%2)" )
-                .arg( QStandardItemModel::data( index, Qt::DisplayRole ).toString() )
-                .arg( QStandardItemModel::data( index, BootLoaderModel::BootLoaderPathRole ).toString() );
+        return tr( "%1 (%2)" ).arg( displayRole, pathRole );
     }
     return QStandardItemModel::data( index, role );
 }

src/modules/partition/gui/PartitionPage.cpp

@@ -79,6 +79,7 @@ PartitionPage::PartitionPage( PartitionCoreModule* core, QWidget* parent )
                     value( "alwaysShowPartitionLabels" ).toBool() );
     m_ui->deviceComboBox->setModel( m_core->deviceModel() );
     m_ui->bootLoaderComboBox->setModel( m_core->bootLoaderModel() );
+    connect( m_core->bootLoaderModel(), &QAbstractItemModel::modelReset, this, &PartitionPage::restoreSelectedBootLoader );
     PartitionBarsView::NestedPartitionsMode mode = Calamares::JobQueue::instance()->globalStorage()->
                                                    value( "drawNestedPartitions" ).toBool() ?
                                                        PartitionBarsView::DrawNestedPartitions :
@@ -505,6 +506,47 @@ PartitionPage::updateSelectedBootLoaderIndex()
     cDebug() << "Selected bootloader index" << m_lastSelectedBootLoaderIndex;
 }
 
+int
+findBootloader( const QAbstractItemModel* model, const QString& path )
+{
+    for ( int i = 0; i < model->rowCount(); ++i)
+    {
+        const auto index = model->index( i, 0, QModelIndex() );
+        cDebug() << i << model->itemData( index );
+        QVariant var = model->data( index, BootLoaderModel::BootLoaderPathRole );
+        if ( var.isValid() && var.toString() == path )
+            return i;
+    }
+
+    return -1;
+}
+
+void
+PartitionPage::restoreSelectedBootLoader()
+{
+    const auto* model = m_ui->bootLoaderComboBox->model();
+    if ( model->rowCount() < 1 )
+    {
+        cDebug() << "No items in BootLoaderModel";
+        return;
+    }
+
+    int r = -1;
+    if ( m_core->bootLoaderInstallPath().isEmpty() )
+    {
+        m_ui->bootLoaderComboBox->setCurrentIndex( 0 );
+    }
+    else if ( (r = findBootloader( model, m_core->bootLoaderInstallPath() )) >= 0 )
+    {
+        m_ui->bootLoaderComboBox->setCurrentIndex( r );
+    }
+    else
+    {
+        m_ui->bootLoaderComboBox->setCurrentIndex( 0 );
+    }
+}
+
+
 void
 PartitionPage::updateFromCurrentDevice()
 {

src/modules/partition/gui/PartitionPage.h

@@ -57,6 +57,8 @@ private slots:
     void updateBootLoaderInstallPath();
     /// @brief Explicitly selected boot loader path
     void updateSelectedBootLoaderIndex();
+    /// @brief After boot loader model changes, try to preserve previously set value
+    void restoreSelectedBootLoader();
 
 private:
     QScopedPointer< Ui_PartitionPage > m_ui;