split ExpanderWidget into its own set of files

1 files changed, 54 insertions, 0 deletions

diff --git a/src/expanderwidget.cpp b/src/expanderwidget.cpp
new file mode 100644
index 00000000..2f47da5b
--- /dev/null
+++ b/src/expanderwidget.cpp
@@ -0,0 +1,54 @@
+#include "expanderwidget.h"
+
+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) {
+    m_button->setArrowType(Qt::DownArrow);
+    m_content->show();
+  } else {
+    m_button->setArrowType(Qt::RightArrow);
+    m_content->hide();
+  }
+
+  // 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;
+}
+
+bool ExpanderWidget::opened() const
+{
+  return opened_;
+}