Initial commit for ExpandableRadioButton.

ExpandableRadioButton extends PrettyRadioButton with an optional
user-provided QWidget at the bottom, which only shows up when the
button is checked.

src/modules/partition/gui/ExpandableRadioButton.cpp

@@ -0,0 +1,73 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2015, Teo Mrnjavac <teo@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 "ExpandableRadioButton.h"
+
+#include <utils/CalamaresUtilsGui.h>
+#include <widgets/ClickableLabel.h>
+
+#include <QBoxLayout>
+
+
+ExpandableRadioButton::ExpandableRadioButton( QWidget* parent )
+    : PrettyRadioButton( parent )
+    , m_expandableWidget( nullptr )
+{
+    QBoxLayout* mainLayout = qobject_cast< QBoxLayout* >( layout() );
+    mainLayout->setDirection( QBoxLayout::TopToBottom );
+    mainLayout->setContentsMargins( 0, 0, 0, 0 );
+    QBoxLayout* prettyRadioButtonLayout = new QHBoxLayout;
+    prettyRadioButtonLayout->addWidget( m_radio );
+    prettyRadioButtonLayout->addWidget( m_label );
+    mainLayout->addLayout( prettyRadioButtonLayout );
+}
+
+
+QSize
+ExpandableRadioButton::sizeHint() const
+{
+    return PrettyRadioButton::sizeHint();
+}
+
+
+void
+ExpandableRadioButton::setExpandableWidget( QWidget* widget )
+{
+    if ( m_expandableWidget )
+    {
+        layout()->removeWidget( m_expandableWidget );
+        m_expandableWidget->deleteLater();
+    }
+
+    m_expandableWidget = widget;
+    m_expandableWidget->setVisible( m_radio->isChecked() );
+    layout()->addWidget( m_expandableWidget );
+    updateGeometry();
+
+    connect( m_radio, &QRadioButton::toggled,
+             m_expandableWidget, &QWidget::setVisible );
+}
+
+
+QWidget*
+ExpandableRadioButton::expandableWidget() const
+{
+    return m_expandableWidget;
+}
+

src/modules/partition/gui/ExpandableRadioButton.h

@@ -0,0 +1,42 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2015, Teo Mrnjavac <teo@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 EXPANDABLERADIOBUTTON_H
+#define EXPANDABLERADIOBUTTON_H
+
+#include "PrettyRadioButton.h"
+
+class ExpandableRadioButton : public PrettyRadioButton
+{
+    Q_OBJECT
+public:
+    explicit ExpandableRadioButton( QWidget* parent = nullptr );
+    virtual ~ExpandableRadioButton() {}
+
+    QSize sizeHint() const override;
+
+    void setExpandableWidget( QWidget* widget );
+    QWidget* expandableWidget() const;
+
+private:
+    QWidget* m_expandableWidget;
+    bool m_expanded;
+};
+
+#endif // EXPANDABLERADIOBUTTON_H