window_manager.h

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/*
 * Copyright (C) 2013-2016 John Emmas <john@creativepost.co.uk>
 * Copyright (C) 2013-2016 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2013-2018 Robin Gareus <robin@gareus.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef __gtk2_ardour_window_manager_h__
#define __gtk2_ardour_window_manager_h__
 
#include <string>
#include <map>
 
#include <sigc++/trackable.h>
 
#include "gtkmm2ext/actions.h"
#include "gtkmm2ext/bindings.h"
#include "gtkmm2ext/window_proxy.h"
 
#include <glibmm/refptr.h>
 
#include "ardour/session_handle.h"
 
class XMLNode;
 
namespace Gtk {
class Window;
class Action;
}
 
namespace Gtkmm2ext {
        class VisibilityTracker;
}
 
namespace ARDOUR {
        class Session;
        class SessionHandlePtr;
}
 
namespace WM {
 
class ProxyBase;
 
class Manager : public ARDOUR::SessionHandlePtr
{
public:
        static Manager& instance();
 
        void register_window (ProxyBase*);
        void remove (const ProxyBase*);
        void toggle_window (ProxyBase*);
        void show_visible () const;
        void set_session (ARDOUR::Session*);
        void add_state (XMLNode&) const;
 
        /* HACK HACK HACK */
        void set_transient_for (Gtk::Window*);
        Gtk::Window* transient_parent() const { return current_transient_parent; }
 
private:
        typedef std::list<ProxyBase*> Windows;
        Windows _windows;
        Glib::RefPtr<Gtk::ActionGroup> window_actions;
        Gtk::Window* current_transient_parent;
 
        Manager();
        ~Manager();
 
        static Manager* _instance;
private:
        void window_proxy_was_mapped (ProxyBase*);
        void window_proxy_was_unmapped (ProxyBase*);
};
 
class ProxyBase : public ARDOUR::SessionHandlePtr, public Gtkmm2ext::WindowProxy
{
public:
        ProxyBase (const std::string& name, const std::string& menu_name);
        ProxyBase (const std::string& name, const std::string& menu_name, const XMLNode&);
 
        virtual ARDOUR::SessionHandlePtr* session_handle () = 0;
 
protected:
        void setup ();
};
 
class ProxyTemporary: public ProxyBase
{
public:
        ProxyTemporary (const std::string& name, Gtk::Window* win);
 
        Gtk::Window* get (bool create = false) {
                (void) create;
                return _window;
        }
 
        Gtk::Window* operator->() {
                return _window;
        }
 
        ARDOUR::SessionHandlePtr* session_handle ();
 
        void explicit_delete () { _window = 0 ; delete this; }
};
 
template<typename T>
class ProxyWithConstructor: public ProxyBase
{
public:
        ProxyWithConstructor (const std::string& name, const std::string& menu_name, const std::function<T*()>& c)
                : ProxyBase (name, menu_name) , creator (c) {}
 
        ProxyWithConstructor (const std::string& name, const std::string& menu_name, const std::function<T*()>& c, const XMLNode* node)
                : ProxyBase (name, menu_name, *node) , creator (c) {}
 
        Gtk::Window* get (bool create = false) {
                if (!_window) {
                        if (!create) {
                                return 0;
                        }
 
                        _window = dynamic_cast<Gtk::Window*> (creator ());
 
                        if (_window) {
                                setup ();
                        }
                }
 
                return _window;
        }
 
        T* operator->() {
                return dynamic_cast<T*> (get (true));
        }
 
        ARDOUR::SessionHandlePtr* session_handle () {
                /* may return null */
                return dynamic_cast<T*> (_window);
        }
 
        void set_session(ARDOUR::Session *s) {
                SessionHandlePtr::set_session (s);
                ARDOUR::SessionHandlePtr* sp = session_handle ();
                if (sp) {
                        sp->set_session (s);
                }
                ARDOUR::SessionHandlePtr* wsp = dynamic_cast<T*>(_window);
                if (wsp && wsp != sp) {
                        /* can this happen ? */
                        assert (0);
                        wsp->set_session(s);
                }
        }
 
private:
        std::function<T*()>     creator;
};
 
template<typename T>
class Proxy : public ProxyBase
{
public:
        Proxy (const std::string& name, const std::string& menu_name)
                : ProxyBase (name, menu_name) {}
 
        Proxy (const std::string& name, const std::string& menu_name, const XMLNode* node)
                : ProxyBase (name, menu_name, *node)  {}
 
        Gtk::Window* get (bool create = false) {
                if (!_window) {
                        if (!create) {
                                return 0;
                        }
 
                        _window = new T ();
 
                        if (_window) {
                                setup ();
                        }
                }
 
                return _window;
        }
 
        T* operator->() {
                return dynamic_cast<T*> (get(true));
        }
 
        ARDOUR::SessionHandlePtr* session_handle () {
                /* may return null */
                return dynamic_cast<T*> (_window);
        }
 
        void set_session(ARDOUR::Session *s) {
                SessionHandlePtr::set_session (s);
                ARDOUR::SessionHandlePtr* sp = session_handle ();
                if (sp) {
                        sp->set_session (s);
                }
                ARDOUR::SessionHandlePtr* wsp = dynamic_cast<T*>(_window);
                if (wsp && wsp != sp) {
                        /* can this happen ? */
                        assert (0);
                        wsp->set_session(s);
                }
        }
 
private:
        std::function<T*()>     creator;
};
 
} /* namespace */
 
#endif /* __gtk2_ardour_window_manager_h__ */