add context panel

app/gcompose/src/ContextPanel.h

@@ -0,0 +1,31 @@
+#ifndef CONTEXT_PANEL_H
+#define CONTEXT_PANEL_H
+
+#include <QWidget>
+
+class QTreeView;
+class QVBoxLayout;
+class QLabel;
+class ContextModel;
+
+namespace uLib {
+    class ObjectsContext;
+}
+
+class ContextPanel : public QWidget {
+    Q_OBJECT
+public:
+    explicit ContextPanel(QWidget* parent = nullptr);
+    virtual ~ContextPanel();
+
+    void setContext(uLib::ObjectsContext* context);
+
+private:
+    QVBoxLayout* m_layout;
+    QWidget* m_titleBar;
+    QLabel* m_titleLabel;
+    QTreeView* m_treeView;
+    ContextModel* m_model;
+};
+
+#endif // CONTEXT_PANEL_H