1 files changed, 93 insertions, 0 deletions
diff --git a/libs/uibase/src/expanderwidget.cpp b/libs/uibase/src/expanderwidget.cpp
new file mode 100644
index 0000000..451ab07
--- /dev/null
+++ b/libs/uibase/src/expanderwidget.cpp
@@ -0,0 +1,93 @@
+#include <uibase/expanderwidget.h>
+#include <QIODevice>
+
+namespace MOBase
+{
+
+ExpanderWidget::ExpanderWidget() : m_button(nullptr), m_content(nullptr), opened_(false)
+{}
+
+ExpanderWidget::ExpanderWidget(QToolButton* button, QWidget* content) : ExpanderWidget()
+{
+  set(button, content);
+}
+
+void ExpanderWidget::set(QToolButton* button, QWidget* content, bool o)
+{
+  m_button  = button;
+  m_content = content;
+
+  m_button->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
+  QObject::connect(m_button, &QToolButton::clicked, [&] {
+    toggle();
+  });
+
+  toggle(o);
+}
+
+void ExpanderWidget::toggle()
+{
+  if (opened()) {
+    toggle(false);
+  } else {
+    toggle(true);
+  }
+}
+
+void ExpanderWidget::toggle(bool b)
+{
+  if (b != opened_) {
+    emit aboutToToggle(b);
+  }
+
+  if (b) {
+    m_button->setArrowType(Qt::DownArrow);
+    m_content->show();
+  } else {
+    m_button->setArrowType(Qt::RightArrow);
+    m_content->hide();
+  }
+
+  if (b != opened_) {
+    // the state has to be remembered instead of using m_content's visibility
+    // because saving the state in saveConflictExpandersState() happens after the
+    // dialog is closed, which marks all the widgets hidden
+    opened_ = b;
+
+    emit toggled(b);
+  }
+}
+
+bool ExpanderWidget::opened() const
+{
+  return opened_;
+}
+
+QByteArray ExpanderWidget::saveState() const
+{
+  QByteArray result;
+  QDataStream stream(&result, QIODevice::WriteOnly);
+
+  stream << opened();
+
+  return result;
+}
+
+void ExpanderWidget::restoreState(const QByteArray& a)
+{
+  QDataStream stream(a);
+
+  bool opened = false;
+  stream >> opened;
+
+  if (stream.status() == QDataStream::Ok) {
+    toggle(opened);
+  }
+}
+
+QToolButton* ExpanderWidget::button() const
+{
+  return m_button;
+}
+
+}  // namespace MOBase