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    Copyright (C) 2000 Paul Davis 

    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
    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., 675 Mass Ave, Cambridge, MA 02139, USA.


#ifndef __ardour_location_h__
#define __ardour_location_h__

#include <string>
#include <list>
#include <iostream>
#include <map>

#include <sys/types.h>
#include <sigc++/signal.h>

#include <glibmm/thread.h>

#include <pbd/undo.h>
#include <pbd/stateful.h> 
#include <pbd/statefuldestructible.h> 

#include <ardour/ardour.h>

using std::string;

namespace ARDOUR {

class Location : public PBD::StatefulDestructible
      enum Flags {
            IsMark = 0x1,
            IsAutoPunch = 0x2,
            IsAutoLoop = 0x4,
            IsHidden = 0x8,
            IsCDMarker = 0x10,
            IsEnd = 0x20,
            IsRangeMarker = 0x40,
            IsStart = 0x80

      Location (nframes_t sample_start,
              nframes_t sample_end,
              const string &name,
              Flags bits = Flags(0))            
            : _name (name),
            _start (sample_start),
            _end (sample_end),
            _flags (bits),
            _locked (false) { }
      Location () {
            _start = 0;
            _end = 0;
            _flags = Flags (0);
            _locked = false;

      Location (const Location& other);
      Location (const XMLNode&);
      Location* operator= (const Location& other);

      bool locked() const { return _locked; }
      void lock() { _locked = true; changed (this); }
      void unlock() { _locked = false; changed (this); }
      nframes_t start() const  { return _start; }
      nframes_t end() const { return _end; }
      nframes_t length() const { return _end - _start; }

      int set_start (nframes_t s);
      int set_end (nframes_t e);
      int set (nframes_t start, nframes_t end);

      int move_to (nframes_t pos);

      const string& name() { return _name; }
      void set_name (const string &str) { _name = str; name_changed(this); }

      void set_auto_punch (bool yn, void *src);
      void set_auto_loop (bool yn, void *src);
      void set_hidden (bool yn, void *src);
      void set_cd (bool yn, void *src);
      void set_is_end (bool yn, void* src);
      void set_is_start (bool yn, void* src);

      bool is_auto_punch () const { return _flags & IsAutoPunch; }
      bool is_auto_loop () const { return _flags & IsAutoLoop; }
      bool is_mark () const { return _flags & IsMark; }
      bool is_hidden () const { return _flags & IsHidden; }
      bool is_cd_marker () const { return _flags & IsCDMarker; }
      bool is_end() const { return _flags & IsEnd; }
      bool is_start() const { return _flags & IsStart; }
      bool is_range_marker() const { return _flags & IsRangeMarker; }
      bool matches (Flags f) const { return _flags & f; }

      sigc::signal<void,Location*> name_changed;
      sigc::signal<void,Location*> end_changed;
      sigc::signal<void,Location*> start_changed;

      sigc::signal<void,Location*,void*> FlagsChanged;

      /* this is sent only when both start&end change at the same time */

      sigc::signal<void,Location*> changed;
      /* CD Track / CD-Text info */

      std::map<string, string> cd_info;
      XMLNode& cd_info_node (const string &, const string &);

      XMLNode& get_state (void);
      int set_state (const XMLNode&);

      string        _name;
      nframes_t     _start;
      nframes_t     _end;
      Flags         _flags;
      bool          _locked;

      void set_mark (bool yn);
      bool set_flag_internal (bool yn, Flags flag);

class Locations : public PBD::StatefulDestructible
      typedef std::list<Location *> LocationList;

      Locations ();
      ~Locations ();
      const LocationList& list() { return locations; }

      void add (Location *, bool make_current = false);
      void remove (Location *);
      void clear ();
      void clear_markers ();
      void clear_ranges ();

      XMLNode& get_state (void);
      int set_state (const XMLNode&);
        Location *get_location_by_id(PBD::ID);

      Location* auto_loop_location () const;
      Location* auto_punch_location () const;
      Location* end_location() const;
      Location* start_location() const;

      int next_available_name(string& result,string base);
      uint32_t num_range_markers() const;

      int set_current (Location *, bool want_lock = true);
      Location *current () const { return current_location; }

      Location *first_location_before (nframes_t, bool include_special_ranges = false);
      Location *first_location_after (nframes_t, bool include_special_ranges = false);

      nframes_t first_mark_before (nframes_t, bool include_special_ranges = false);
      nframes_t first_mark_after (nframes_t, bool include_special_ranges = false);

      void find_all_between (nframes64_t start, nframes64_t, LocationList&, Location::Flags);

      sigc::signal<void,Location*> current_changed;
      sigc::signal<void>           changed;
      sigc::signal<void,Location*> added;
      sigc::signal<void,Location*> removed;
      sigc::signal<void,Change>    StateChanged;

      template<class T> void apply (T& obj, void (T::*method)(LocationList&)) {
            Glib::Mutex::Lock lm (lock);

      template<class T1, class T2> void apply (T1& obj, void (T1::*method)(LocationList&, T2& arg), T2& arg) {
            Glib::Mutex::Lock lm (lock);
            (obj.*method)(locations, arg);


      LocationList         locations;
      Location            *current_location;
      mutable Glib::Mutex  lock;

      int set_current_unlocked (Location *);
      void location_changed (Location*);

} // namespace ARDOUR

#endif /* __ardour_location_h__ */

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