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/*
* $Id: thread.h 761 2007-10-23 22:35:18Z hubert@u.washington.edu $
*
* ========================================================================
* Copyright 2013-2022 Eduardo Chappa
* Copyright 2006 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* ========================================================================
*/
#ifndef PITH_THREAD_INCLUDED
#define PITH_THREAD_INCLUDED
#include "../pith/msgno.h"
#include "../pith/indxtype.h"
#include "../pith/state.h"
#include "../pith/conf.h"
#define THD_TOP 0x0000 /* start of an individual thread */
#define THD_NEXT 0x0001
#define THD_BRANCH 0x0004
typedef struct pine_thrd {
unsigned long rawno; /* raw msgno of this message */
unsigned long thrdno; /* thread number */
unsigned long flags;
unsigned long next; /* msgno of first reply to us */
unsigned long branch; /* like THREADNODE branch, next replier */
unsigned long parent; /* message that this is a reply to */
unsigned long nextthd; /* next thread, only tops have this */
unsigned long prevthd; /* previous thread, only tops have this */
unsigned long top; /* top of this thread */
unsigned long head; /* head of the whole thread list */
} PINETHRD_S;
/*
* Some macros useful for threading
*/
/* Sort is a threaded sort */
#define SORT_IS_THREADED(msgmap) \
(mn_get_sort(msgmap) == SortThread \
|| mn_get_sort(msgmap) == SortSubject2)
#define SEP_THRDINDX() \
(ps_global->thread_index_style == THRDINDX_SEP \
|| ps_global->thread_index_style == THRDINDX_SEP_AUTO)
#define COLL_THRDS() \
(ps_global->thread_index_style == THRDINDX_COLL)
#define THRD_AUTO_VIEW() \
(ps_global->thread_index_style == THRDINDX_SEP_AUTO)
/* We are threading now, pay attention to all the other variables */
#define THREADING() \
(!ps_global->turn_off_threading_temporarily \
&& SORT_IS_THREADED(ps_global->msgmap) \
&& (SEP_THRDINDX() \
|| ps_global->thread_disp_style != THREAD_NONE))
/* If we were to view the folder, we would get a thread index */
#define THRD_INDX_ENABLED() \
(SEP_THRDINDX() \
&& THREADING())
/* We are in the thread index (or would be if we weren't in an index menu) */
#define THRD_INDX() \
(THRD_INDX_ENABLED() \
&& !sp_viewing_a_thread(ps_global->mail_stream))
/* The thread command ought to work now */
#define THRD_COLLAPSE_ENABLE() \
(THREADING() \
&& !THRD_INDX() \
&& ps_global->thread_disp_style != THREAD_NONE)
/* exported prototypes */
PINETHRD_S *fetch_thread(MAILSTREAM *, unsigned long);
PINETHRD_S *fetch_head_thread(MAILSTREAM *);
void set_flags_for_thread(MAILSTREAM *, MSGNO_S *, int, PINETHRD_S *, int);
void erase_threading_info(MAILSTREAM *, MSGNO_S *);
void sort_thread_callback(MAILSTREAM *, THREADNODE *);
void collapse_threads(MAILSTREAM *, MSGNO_S *, PINETHRD_S *);
PINETHRD_S *msgno_thread_info(MAILSTREAM *, unsigned long, PINETHRD_S *, unsigned);
void collapse_or_expand(struct pine *, MAILSTREAM *, MSGNO_S *, unsigned long);
void select_thread_stmp(struct pine *, MAILSTREAM *, MSGNO_S *);
unsigned long count_flags_in_thread(MAILSTREAM *, PINETHRD_S *, long);
unsigned long count_lflags_in_thread(MAILSTREAM *, PINETHRD_S *, MSGNO_S *, int);
int thread_has_some_visible(MAILSTREAM *, PINETHRD_S *);
int mark_msgs_in_thread(MAILSTREAM *, PINETHRD_S *, MSGNO_S *);
void set_thread_lflags(MAILSTREAM *, PINETHRD_S *, MSGNO_S *, int, int);
char status_symbol_for_thread(MAILSTREAM *, PINETHRD_S *, IndexColType);
char to_us_symbol_for_thread(MAILSTREAM *, PINETHRD_S *, int);
void set_thread_subtree(MAILSTREAM *, PINETHRD_S *, MSGNO_S *, int, int);
int view_thread(struct pine *, MAILSTREAM *, MSGNO_S *, int);
int unview_thread(struct pine *, MAILSTREAM *, MSGNO_S *);
PINETHRD_S *find_thread_by_number(MAILSTREAM *, MSGNO_S *, long, PINETHRD_S *);
void set_search_bit_for_thread(MAILSTREAM *, PINETHRD_S *, SEARCHSET **);
#endif /* PITH_THREAD_INCLUDED */
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