Make better code structure for border handlers

Sine Striker

2023-12-13 a51b5688e1c33d3ce96b48c869603b00f908f513

 src/core/windowagentbase_p.h

@@ -22,6 +22,12 @@

        std::unique_ptr<AbstractWindowContext> context;

    public:
        using WindowContextFactoryMethod = AbstractWindowContext *(*) ();

        static WindowContextFactoryMethod windowContextFactoryMethod;

    private:
        Q_DISABLE_COPY_MOVE(WindowAgentBasePrivate)
    };