context.h

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#ifndef ASW_UI_CONTEXT_H
#define ASW_UI_CONTEXT_H
 
#include <vector>
 
#include "theme.h"
#include "widget.h"
 
namespace asw::ui {
 
class FocusManager {
public:
    void rebuild(Context& ctx, Widget& root);
 
    Widget* focused() const
    {
        return focused_;
    }
 
    void set_focus(Context& ctx, Widget* w);
 
    void focus_next(Context& ctx);
 
    void focus_prev(Context& ctx);
 
    void focus_dir(Context& ctx, int dx, int dy);
 
private:
    void dfs(Widget& w);
 
    std::vector<Widget*> focusables_;
    Widget* focused_ = nullptr;
};
 
class Context {
public:
    Context() = default;
 
    Theme theme;
 
    FocusManager focus;
 
    Widget* pointer_capture = nullptr;
 
    Widget* hover = nullptr;
 
    bool pointer_down = false;
 
    bool need_focus_rebuild = true;
};
 
} // namespace asw::ui
 
#endif // ASW_UI_CONTEXT_H