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menu.c
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menu.c
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/**
* @file
* GUI present the user with a selectable list
*
* @authors
* Copyright (C) 1996-2000,2002,2012 Michael R. Elkins <me@mutt.org>
*
* @copyright
* 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, see <http://www.gnu.org/licenses/>.
*/
/**
* @page menu GUI present the user with a selectable list
*
* GUI present the user with a selectable list
*/
#include "config.h"
#include <regex.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include "mutt/mutt.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "mutt.h"
#include "commands.h"
#include "context.h"
#include "globals.h"
#include "keymap.h"
#include "mutt_logging.h"
#include "mutt_menu.h"
#include "muttlib.h"
#include "opcodes.h"
#include "options.h"
#include "pattern.h"
#include "protos.h"
#ifdef USE_SIDEBAR
#include "sidebar.h"
#endif
/* These Config Variables are only used in menu.c */
short C_MenuContext; ///< Config: Number of lines of overlap when changing pages in the index
bool C_MenuMoveOff; ///< Config: Allow the last menu item to move off the bottom of the screen
bool C_MenuScroll; ///< Config: Scroll the menu/index by one line, rather than a page
char *SearchBuffers[MENU_MAX];
/* These are used to track the active menus, for redraw operations. */
static size_t MenuStackCount = 0;
static size_t MenuStackLen = 0;
static struct Menu **MenuStack = NULL;
#define DIRECTION ((neg * 2) + 1)
#define MUTT_SEARCH_UP 1
#define MUTT_SEARCH_DOWN 2
/**
* get_color - Choose a colour for a line of the index
* @param index Index number
* @param s String of embedded colour codes
* @retval num Colour pair in an integer
*
* Text is coloured by inserting special characters into the string, e.g.
* #MT_COLOR_INDEX_AUTHOR
*/
static int get_color(int index, unsigned char *s)
{
struct ColorLineList *color = NULL;
struct ColorLine *np = NULL;
struct Email *e = mutt_get_virt_email(Context->mailbox, index);
int type = *s;
switch (type)
{
case MT_COLOR_INDEX_AUTHOR:
color = &Colors->index_author_list;
break;
case MT_COLOR_INDEX_FLAGS:
color = &Colors->index_flags_list;
break;
case MT_COLOR_INDEX_SUBJECT:
color = &Colors->index_subject_list;
break;
case MT_COLOR_INDEX_TAG:
STAILQ_FOREACH(np, &Colors->index_tag_list, entries)
{
if (strncmp((const char *) (s + 1), np->pattern, strlen(np->pattern)) == 0)
return np->pair;
const char *transform = mutt_hash_find(TagTransforms, np->pattern);
if (transform &&
(strncmp((const char *) (s + 1), transform, strlen(transform)) == 0))
{
return np->pair;
}
}
return 0;
default:
return Colors->defs[type];
}
STAILQ_FOREACH(np, color, entries)
{
if (mutt_pattern_exec(SLIST_FIRST(np->color_pattern),
MUTT_MATCH_FULL_ADDRESS, Context->mailbox, e, NULL))
return np->pair;
}
return 0;
}
/**
* print_enriched_string - Display a string with embedded colours and graphics
* @param index Index number
* @param attr Default colour for the line
* @param s String of embedded colour codes
* @param do_color If true, apply colour
*/
static void print_enriched_string(int index, int attr, unsigned char *s, bool do_color)
{
wchar_t wc;
size_t k;
size_t n = mutt_str_strlen((char *) s);
mbstate_t mbstate;
memset(&mbstate, 0, sizeof(mbstate));
while (*s)
{
if (*s < MUTT_TREE_MAX)
{
if (do_color)
#if defined(HAVE_COLOR) && defined(HAVE_USE_DEFAULT_COLORS)
/* Combining tree fg color and another bg color requires
* having use_default_colors, because the other bg color
* may be undefined. */
mutt_curses_set_attr(mutt_color_combine(Colors, Colors->defs[MT_COLOR_TREE], attr));
#else
mutt_curses_set_color(MT_COLOR_TREE);
#endif
while (*s && (*s < MUTT_TREE_MAX))
{
switch (*s)
{
case MUTT_TREE_LLCORNER:
if (C_AsciiChars)
mutt_window_addch('`');
#ifdef WACS_LLCORNER
else
add_wch(WACS_LLCORNER);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\224"); /* WACS_LLCORNER */
else
mutt_window_addch(ACS_LLCORNER);
#endif
break;
case MUTT_TREE_ULCORNER:
if (C_AsciiChars)
mutt_window_addch(',');
#ifdef WACS_ULCORNER
else
add_wch(WACS_ULCORNER);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\214"); /* WACS_ULCORNER */
else
mutt_window_addch(ACS_ULCORNER);
#endif
break;
case MUTT_TREE_LTEE:
if (C_AsciiChars)
mutt_window_addch('|');
#ifdef WACS_LTEE
else
add_wch(WACS_LTEE);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\234"); /* WACS_LTEE */
else
mutt_window_addch(ACS_LTEE);
#endif
break;
case MUTT_TREE_HLINE:
if (C_AsciiChars)
mutt_window_addch('-');
#ifdef WACS_HLINE
else
add_wch(WACS_HLINE);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\200"); /* WACS_HLINE */
else
mutt_window_addch(ACS_HLINE);
#endif
break;
case MUTT_TREE_VLINE:
if (C_AsciiChars)
mutt_window_addch('|');
#ifdef WACS_VLINE
else
add_wch(WACS_VLINE);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\202"); /* WACS_VLINE */
else
mutt_window_addch(ACS_VLINE);
#endif
break;
case MUTT_TREE_TTEE:
if (C_AsciiChars)
mutt_window_addch('-');
#ifdef WACS_TTEE
else
add_wch(WACS_TTEE);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\254"); /* WACS_TTEE */
else
mutt_window_addch(ACS_TTEE);
#endif
break;
case MUTT_TREE_BTEE:
if (C_AsciiChars)
mutt_window_addch('-');
#ifdef WACS_BTEE
else
add_wch(WACS_BTEE);
#else
else if (CharsetIsUtf8)
mutt_window_addstr("\342\224\264"); /* WACS_BTEE */
else
mutt_window_addch(ACS_BTEE);
#endif
break;
case MUTT_TREE_SPACE:
mutt_window_addch(' ');
break;
case MUTT_TREE_RARROW:
mutt_window_addch('>');
break;
case MUTT_TREE_STAR:
mutt_window_addch('*'); /* fake thread indicator */
break;
case MUTT_TREE_HIDDEN:
mutt_window_addch('&');
break;
case MUTT_TREE_EQUALS:
mutt_window_addch('=');
break;
case MUTT_TREE_MISSING:
mutt_window_addch('?');
break;
}
s++;
n--;
}
if (do_color)
mutt_curses_set_attr(attr);
}
else if (*s == MUTT_SPECIAL_INDEX)
{
s++;
if (do_color)
{
if (*s == MT_COLOR_INDEX)
{
attrset(attr);
}
else
{
if (get_color(index, s) == 0)
{
attron(attr);
}
else
{
attron(get_color(index, s));
}
}
}
s++;
n -= 2;
}
else if ((k = mbrtowc(&wc, (char *) s, n, &mbstate)) > 0)
{
mutt_window_addnstr((char *) s, k);
s += k;
n -= k;
}
else
break;
}
}
/**
* menu_make_entry - Create string to display in a Menu (the index)
* @param buf Buffer for the result
* @param buflen Length of the buffer
* @param menu Current Menu
* @param i Selected item
*/
static void menu_make_entry(char *buf, size_t buflen, struct Menu *menu, int i)
{
if (menu->dialog)
{
mutt_str_strfcpy(buf, NONULL(menu->dialog[i]), buflen);
menu->current = -1; /* hide menubar */
}
else
menu->menu_make_entry(buf, buflen, menu, i);
}
/**
* menu_pad_string - Pad a string with spaces for display in the Menu
* @param menu Current Menu
* @param buf Buffer containing the string
* @param buflen Length of the buffer
*
* @note The string is padded in-place.
*/
static void menu_pad_string(struct Menu *menu, char *buf, size_t buflen)
{
char *scratch = mutt_str_strdup(buf);
int shift = C_ArrowCursor ? 3 : 0;
int cols = menu->win_index->state.cols - shift;
mutt_simple_format(buf, buflen, cols, cols, JUSTIFY_LEFT, ' ', scratch,
mutt_str_strlen(scratch), true);
buf[buflen - 1] = '\0';
FREE(&scratch);
}
/**
* menu_redraw_full - Force the redraw of the Menu
* @param menu Current Menu
*/
void menu_redraw_full(struct Menu *menu)
{
mutt_curses_set_color(MT_COLOR_NORMAL);
/* clear() doesn't optimize screen redraws */
mutt_window_move_abs(0, 0);
mutt_window_clrtobot();
if (C_Help)
{
mutt_curses_set_color(MT_COLOR_STATUS);
mutt_window_move(MuttHelpWindow, 0, 0);
mutt_paddstr(MuttHelpWindow->state.cols, menu->help);
mutt_curses_set_color(MT_COLOR_NORMAL);
}
menu->offset = 0;
menu->pagelen = menu->win_index->state.rows;
mutt_show_error();
menu->redraw = REDRAW_INDEX | REDRAW_STATUS;
#ifdef USE_SIDEBAR
menu->redraw |= REDRAW_SIDEBAR;
#endif
}
/**
* menu_redraw_status - Force the redraw of the status bar
* @param menu Current Menu
*/
void menu_redraw_status(struct Menu *menu)
{
char buf[256];
snprintf(buf, sizeof(buf), "-- NeoMutt: %s", menu->title);
mutt_curses_set_color(MT_COLOR_STATUS);
mutt_window_move(menu->win_ibar, 0, 0);
mutt_paddstr(menu->win_ibar->state.cols, buf);
mutt_curses_set_color(MT_COLOR_NORMAL);
menu->redraw &= ~REDRAW_STATUS;
}
#ifdef USE_SIDEBAR
/**
* menu_redraw_sidebar - Force the redraw of the sidebar
* @param menu Current Menu
*/
void menu_redraw_sidebar(struct Menu *menu)
{
menu->redraw &= ~REDRAW_SIDEBAR;
struct MuttWindow *dlg = mutt_window_dialog(menu->win_index);
struct MuttWindow *sidebar = mutt_window_find(dlg, WT_SIDEBAR);
mutt_sb_draw(sidebar);
}
#endif
/**
* menu_redraw_index - Force the redraw of the index
* @param menu Current Menu
*/
void menu_redraw_index(struct Menu *menu)
{
char buf[1024];
bool do_color;
int attr;
for (int i = menu->top; i < menu->top + menu->pagelen; i++)
{
if (i < menu->max)
{
attr = menu->menu_color(i);
menu_make_entry(buf, sizeof(buf), menu, i);
menu_pad_string(menu, buf, sizeof(buf));
mutt_curses_set_attr(attr);
mutt_window_move(menu->win_index, i - menu->top + menu->offset, 0);
do_color = true;
if (i == menu->current)
{
mutt_curses_set_color(MT_COLOR_INDICATOR);
if (C_ArrowCursor)
{
mutt_window_addstr("->");
mutt_curses_set_attr(attr);
mutt_window_addch(' ');
}
else
do_color = false;
}
else if (C_ArrowCursor)
mutt_window_addstr(" ");
print_enriched_string(i, attr, (unsigned char *) buf, do_color);
}
else
{
mutt_curses_set_color(MT_COLOR_NORMAL);
mutt_window_clearline(menu->win_index, i - menu->top + menu->offset);
}
}
mutt_curses_set_color(MT_COLOR_NORMAL);
menu->redraw = 0;
}
/**
* menu_redraw_motion - Force the redraw of the list part of the menu
* @param menu Current Menu
*/
void menu_redraw_motion(struct Menu *menu)
{
char buf[1024];
if (menu->dialog)
{
menu->redraw &= ~REDRAW_MOTION;
return;
}
/* Note: menu->color() for the index can end up retrieving a message
* over imap (if matching against ~h for instance). This can
* generate status messages. So we want to call it *before* we
* position the cursor for drawing. */
const int old_color = menu->menu_color(menu->oldcurrent);
mutt_window_move(menu->win_index, menu->oldcurrent + menu->offset - menu->top, 0);
mutt_curses_set_attr(old_color);
if (C_ArrowCursor)
{
/* clear the pointer */
mutt_window_addstr(" ");
if (menu->redraw & REDRAW_MOTION_RESYNC)
{
menu_make_entry(buf, sizeof(buf), menu, menu->oldcurrent);
menu_pad_string(menu, buf, sizeof(buf));
mutt_window_move(menu->win_index, menu->oldcurrent + menu->offset - menu->top, 3);
print_enriched_string(menu->oldcurrent, old_color, (unsigned char *) buf, true);
}
/* now draw it in the new location */
mutt_curses_set_color(MT_COLOR_INDICATOR);
mutt_window_mvaddstr(menu->win_index, menu->current + menu->offset - menu->top, 0, "->");
}
else
{
/* erase the current indicator */
menu_make_entry(buf, sizeof(buf), menu, menu->oldcurrent);
menu_pad_string(menu, buf, sizeof(buf));
print_enriched_string(menu->oldcurrent, old_color, (unsigned char *) buf, true);
/* now draw the new one to reflect the change */
const int cur_color = menu->menu_color(menu->current);
menu_make_entry(buf, sizeof(buf), menu, menu->current);
menu_pad_string(menu, buf, sizeof(buf));
mutt_curses_set_color(MT_COLOR_INDICATOR);
mutt_window_move(menu->win_index, menu->current + menu->offset - menu->top, 0);
print_enriched_string(menu->current, cur_color, (unsigned char *) buf, false);
}
menu->redraw &= REDRAW_STATUS;
mutt_curses_set_color(MT_COLOR_NORMAL);
}
/**
* menu_redraw_current - Redraw the current menu
* @param menu Current Menu
*/
void menu_redraw_current(struct Menu *menu)
{
char buf[1024];
int attr = menu->menu_color(menu->current);
mutt_window_move(menu->win_index, menu->current + menu->offset - menu->top, 0);
menu_make_entry(buf, sizeof(buf), menu, menu->current);
menu_pad_string(menu, buf, sizeof(buf));
mutt_curses_set_color(MT_COLOR_INDICATOR);
if (C_ArrowCursor)
{
mutt_window_addstr("->");
mutt_curses_set_attr(attr);
mutt_window_addch(' ');
menu_pad_string(menu, buf, sizeof(buf));
print_enriched_string(menu->current, attr, (unsigned char *) buf, true);
}
else
print_enriched_string(menu->current, attr, (unsigned char *) buf, false);
menu->redraw &= REDRAW_STATUS;
mutt_curses_set_color(MT_COLOR_NORMAL);
}
/**
* menu_redraw_prompt - Force the redraw of the message window
* @param menu Current Menu
*/
static void menu_redraw_prompt(struct Menu *menu)
{
if (!menu || !menu->dialog)
return;
if (OptMsgErr)
{
mutt_sleep(1);
OptMsgErr = false;
}
if (ErrorBufMessage)
mutt_clear_error();
mutt_window_mvaddstr(MuttMessageWindow, 0, 0, menu->prompt);
mutt_window_clrtoeol(MuttMessageWindow);
}
/**
* menu_check_recenter - Recentre the menu on screen
* @param menu Current Menu
*/
void menu_check_recenter(struct Menu *menu)
{
int c = MIN(C_MenuContext, menu->pagelen / 2);
int old_top = menu->top;
if (!C_MenuMoveOff && (menu->max <= menu->pagelen)) /* less entries than lines */
{
if (menu->top != 0)
{
menu->top = 0;
menu->redraw |= REDRAW_INDEX;
}
}
else
{
if (C_MenuScroll || (menu->pagelen <= 0) || (c < C_MenuContext))
{
if (menu->current < menu->top + c)
menu->top = menu->current - c;
else if (menu->current >= menu->top + menu->pagelen - c)
menu->top = menu->current - menu->pagelen + c + 1;
}
else
{
if (menu->current < menu->top + c)
{
menu->top -= (menu->pagelen - c) * ((menu->top + menu->pagelen - 1 - menu->current) /
(menu->pagelen - c)) -
c;
}
else if ((menu->current >= menu->top + menu->pagelen - c))
{
menu->top +=
(menu->pagelen - c) * ((menu->current - menu->top) / (menu->pagelen - c)) - c;
}
}
}
if (!C_MenuMoveOff) /* make entries stick to bottom */
menu->top = MIN(menu->top, menu->max - menu->pagelen);
menu->top = MAX(menu->top, 0);
if (menu->top != old_top)
menu->redraw |= REDRAW_INDEX;
}
/**
* menu_jump - Jump to another item in the menu
* @param menu Current Menu
*
* Ask the user for a message number to jump to.
*/
static void menu_jump(struct Menu *menu)
{
int n;
if (menu->max)
{
mutt_unget_event(LastKey, 0);
char buf[128];
buf[0] = '\0';
if ((mutt_get_field(_("Jump to: "), buf, sizeof(buf), MUTT_COMP_NO_FLAGS) == 0) && buf[0])
{
if ((mutt_str_atoi(buf, &n) == 0) && (n > 0) && (n < menu->max + 1))
{
n--; /* msg numbers are 0-based */
menu->current = n;
menu->redraw = REDRAW_MOTION;
}
else
mutt_error(_("Invalid index number"));
}
}
else
mutt_error(_("No entries"));
}
/**
* menu_next_line - Move the view down one line, keeping the selection the same
* @param menu Current Menu
*/
void menu_next_line(struct Menu *menu)
{
if (menu->max)
{
int c = MIN(C_MenuContext, menu->pagelen / 2);
if ((menu->top + 1 < menu->max - c) &&
(C_MenuMoveOff ||
((menu->max > menu->pagelen) && (menu->top < menu->max - menu->pagelen))))
{
menu->top++;
if ((menu->current < menu->top + c) && (menu->current < menu->max - 1))
menu->current++;
menu->redraw = REDRAW_INDEX;
}
else
mutt_message(_("You can't scroll down farther"));
}
else
mutt_error(_("No entries"));
}
/**
* menu_prev_line - Move the view up one line, keeping the selection the same
* @param menu Current Menu
*/
void menu_prev_line(struct Menu *menu)
{
if (menu->top > 0)
{
int c = MIN(C_MenuContext, menu->pagelen / 2);
menu->top--;
if ((menu->current >= menu->top + menu->pagelen - c) && (menu->current > 1))
menu->current--;
menu->redraw = REDRAW_INDEX;
}
else
mutt_message(_("You can't scroll up farther"));
}
/**
* menu_length_jump - Calculate the destination of a jump
* @param menu Current Menu
* @param jumplen Number of lines to jump
*
* * pageup: jumplen == -pagelen
* * pagedown: jumplen == pagelen
* * halfup: jumplen == -pagelen/2
* * halfdown: jumplen == pagelen/2
*/
static void menu_length_jump(struct Menu *menu, int jumplen)
{
const int neg = (jumplen >= 0) ? 0 : -1;
const int c = MIN(C_MenuContext, menu->pagelen / 2);
if (menu->max)
{
/* possible to scroll? */
int tmp;
if (DIRECTION * menu->top <
(tmp = (neg ? 0 : (menu->max /* -1 */) - (menu->pagelen /* -1 */))))
{
menu->top += jumplen;
/* jumped too long? */
if ((neg || !C_MenuMoveOff) && (DIRECTION * menu->top > tmp))
menu->top = tmp;
/* need to move the cursor? */
if ((DIRECTION *
(tmp = (menu->current - (menu->top + (neg ? (menu->pagelen - 1) - c : c))))) < 0)
{
menu->current -= tmp;
}
menu->redraw = REDRAW_INDEX;
}
else if ((menu->current != (neg ? 0 : menu->max - 1)) && !menu->dialog)
{
menu->current += jumplen;
menu->redraw = REDRAW_MOTION;
}
else
{
mutt_message(neg ? _("You are on the first page") : _("You are on the last page"));
}
menu->current = MIN(menu->current, menu->max - 1);
menu->current = MAX(menu->current, 0);
}
else
mutt_error(_("No entries"));
}
/**
* menu_next_page - Move the focus to the next page in the menu
* @param menu Current Menu
*/
void menu_next_page(struct Menu *menu)
{
menu_length_jump(menu, MAX(menu->pagelen /* - MenuOverlap */, 0));
}
/**
* menu_prev_page - Move the focus to the previous page in the menu
* @param menu Current Menu
*/
void menu_prev_page(struct Menu *menu)
{
menu_length_jump(menu, 0 - MAX(menu->pagelen /* - MenuOverlap */, 0));
}
/**
* menu_half_down - Move the focus down half a page in the menu
* @param menu Current Menu
*/
void menu_half_down(struct Menu *menu)
{
menu_length_jump(menu, menu->pagelen / 2);
}
/**
* menu_half_up - Move the focus up half a page in the menu
* @param menu Current Menu
*/
void menu_half_up(struct Menu *menu)
{
menu_length_jump(menu, 0 - menu->pagelen / 2);
}
/**
* menu_top_page - Move the focus to the top of the page
* @param menu Current Menu
*/
void menu_top_page(struct Menu *menu)
{
if (menu->current == menu->top)
return;
menu->current = menu->top;
menu->redraw = REDRAW_MOTION;
}
/**
* menu_bottom_page - Move the focus to the bottom of the page
* @param menu Current Menu
*/
void menu_bottom_page(struct Menu *menu)
{
if (menu->max)
{
menu->current = menu->top + menu->pagelen - 1;
if (menu->current > menu->max - 1)
menu->current = menu->max - 1;
menu->redraw = REDRAW_MOTION;
}
else
mutt_error(_("No entries"));
}
/**
* menu_middle_page - Move the focus to the centre of the page
* @param menu Current Menu
*/
void menu_middle_page(struct Menu *menu)
{
if (menu->max)
{
int i = menu->top + menu->pagelen;
if (i > menu->max - 1)
i = menu->max - 1;
menu->current = menu->top + (i - menu->top) / 2;
menu->redraw = REDRAW_MOTION;
}
else
mutt_error(_("No entries"));
}
/**
* menu_first_entry - Move the focus to the first entry in the menu
* @param menu Current Menu
*/
void menu_first_entry(struct Menu *menu)
{
if (menu->max)
{
menu->current = 0;
menu->redraw = REDRAW_MOTION;
}
else
mutt_error(_("No entries"));
}
/**
* menu_last_entry - Move the focus to the last entry in the menu
* @param menu Current Menu
*/
void menu_last_entry(struct Menu *menu)
{
if (menu->max)
{
menu->current = menu->max - 1;
menu->redraw = REDRAW_MOTION;
}
else
mutt_error(_("No entries"));
}
/**
* menu_current_top - Move the current selection to the top of the window
* @param menu Current Menu
*/
void menu_current_top(struct Menu *menu)
{
if (menu->max)
{
menu->top = menu->current;
menu->redraw = REDRAW_INDEX;
}
else
mutt_error(_("No entries"));
}
/**
* menu_current_middle - Move the current selection to the centre of the window
* @param menu Current Menu
*/
void menu_current_middle(struct Menu *menu)
{
if (menu->max)
{
menu->top = menu->current - menu->pagelen / 2;
if (menu->top < 0)
menu->top = 0;
menu->redraw = REDRAW_INDEX;
}
else
mutt_error(_("No entries"));
}
/**
* menu_current_bottom - Move the current selection to the bottom of the window
* @param menu Current Menu
*/
void menu_current_bottom(struct Menu *menu)
{
if (menu->max)
{
menu->top = menu->current - menu->pagelen + 1;
if (menu->top < 0)
menu->top = 0;
menu->redraw = REDRAW_INDEX;
}
else
mutt_error(_("No entries"));
}
/**
* menu_next_entry - Move the focus to the next item in the menu
* @param menu Current Menu
*/
static void menu_next_entry(struct Menu *menu)
{
if (menu->current < menu->max - 1)
{
menu->current++;
menu->redraw = REDRAW_MOTION;
}
else
mutt_message(_("You are on the last entry"));
}
/**
* menu_prev_entry - Move the focus to the previous item in the menu
* @param menu Current Menu
*/
static void menu_prev_entry(struct Menu *menu)
{
if (menu->current)
{
menu->current--;
menu->redraw = REDRAW_MOTION;
}
else
mutt_message(_("You are on the first entry"));
}
/**
* default_color - Get the default colour for a line of the menu - Implements Menu::menu_color()
*/
static int default_color(int line)
{
return Colors->defs[MT_COLOR_NORMAL];
}
/**
* generic_search - Search a menu for a item matching a regex - Implements Menu::menu_search()
*/
static int generic_search(struct Menu *menu, regex_t *rx, int line)
{
char buf[1024];
menu_make_entry(buf, sizeof(buf), menu, line);
return regexec(rx, buf, 0, NULL, 0);
}
/**
* mutt_menu_init - Initialise all the Menus
*/
void mutt_menu_init(void)
{
for (int i = 0; i < MENU_MAX; i++)
SearchBuffers[i] = NULL;
}
/**
* mutt_menu_new - Create a new Menu
* @param type Menu type, e.g. #MENU_PAGER
* @retval ptr New Menu
*/
struct Menu *mutt_menu_new(enum MenuType type)
{
struct Menu *menu = mutt_mem_calloc(1, sizeof(struct Menu));
menu->type = type;
menu->current = 0;
menu->top = 0;
menu->offset = 0;
menu->redraw = REDRAW_FULL;
menu->menu_color = default_color;
menu->menu_search = generic_search;
return menu;
}
/**
* mutt_menu_free - Destroy a menu
* @param[out] ptr Menu to destroy
*/
void mutt_menu_free(struct Menu **ptr)
{
if (!ptr || !*ptr)
return;
struct Menu *m = *ptr;
if (m->dialog)
{
for (int i = 0; i < m->max; i++)
FREE(&m->dialog[i]);