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/*
* gui-curses-key.c - keyboard functions for Curses GUI
*
* Copyright (C) 2003-2023 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat 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 3 of the License, or
* (at your option) any later version.
*
* WeeChat 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 WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "../../core/weechat.h"
#include "../../core/wee-config.h"
#include "../../core/wee-hook.h"
#include "../../core/wee-log.h"
#include "../../core/wee-utf8.h"
#include "../../core/wee-string.h"
#include "../../plugins/plugin.h"
#include "../gui-key.h"
#include "../gui-buffer.h"
#include "../gui-color.h"
#include "../gui-cursor.h"
#include "../gui-completion.h"
#include "../gui-input.h"
#include "../gui-mouse.h"
#include "../gui-window.h"
#include "gui-curses.h"
#define BIND(key, command) gui_key_default_bind(context, key, command)
/*
* Creates key bind, only if it does not exist yet.
*/
void
gui_key_default_bind (int context, const char *key, const char *command)
{
struct t_gui_key *ptr_key;
ptr_key = gui_key_search (gui_keys[context], key);
if (!ptr_key)
gui_key_new (NULL, context, key, command);
}
/*
* Creates default key bindings for a given context.
*/
void
gui_key_default_bindings (int context)
{
int i;
char key_str[32], command[32];
if (context == GUI_KEY_CONTEXT_DEFAULT)
{
BIND("return", "/input return");
BIND("meta-return", "/input insert \\n");
BIND("tab", "/input complete_next");
BIND("shift-tab", "/input complete_previous");
BIND("ctrl-r", "/input search_text_here");
BIND("backspace", "/input delete_previous_char");
BIND("ctrl-_", "/input undo");
BIND("meta-_", "/input redo");
BIND("delete", "/input delete_next_char");
BIND("ctrl-d", "/input delete_next_char");
BIND("ctrl-w", "/input delete_previous_word_whitespace");
BIND("meta-backspace", "/input delete_previous_word");
BIND("ctrl-x", "/buffer switch");
BIND("meta-x", "/buffer zoom");
BIND("meta-d", "/input delete_next_word");
BIND("ctrl-k", "/input delete_end_of_line");
BIND("meta-r", "/input delete_line");
BIND("ctrl-t", "/input transpose_chars");
BIND("ctrl-u", "/input delete_beginning_of_line");
BIND("ctrl-y", "/input clipboard_paste");
BIND("home", "/input move_beginning_of_line");
BIND("ctrl-a", "/input move_beginning_of_line");
BIND("end", "/input move_end_of_line");
BIND("ctrl-e", "/input move_end_of_line");
BIND("left", "/input move_previous_char");
BIND("ctrl-b", "/input move_previous_char");
BIND("right", "/input move_next_char");
BIND("ctrl-f", "/input move_next_char");
BIND("meta-b", "/input move_previous_word");
BIND("ctrl-left", "/input move_previous_word");
BIND("meta-f", "/input move_next_word");
BIND("ctrl-right", "/input move_next_word");
BIND("up", "/input history_previous");
BIND("down", "/input history_next");
BIND("ctrl-up", "/input history_global_previous");
BIND("ctrl-down", "/input history_global_next");
BIND("meta-a", "/buffer jump smart");
BIND("meta-j,meta-f", "/buffer -");
BIND("meta-j,meta-l", "/buffer +");
BIND("meta-j,meta-r", "/server raw");
BIND("meta-j,meta-s", "/server jump");
BIND("meta-h,meta-c", "/hotlist clear");
BIND("meta-h,meta-m", "/hotlist remove");
BIND("meta-h,meta-r", "/hotlist restore");
BIND("meta-h,meta-R", "/hotlist restore -all");
BIND("meta-k", "/input grab_key_command");
BIND("meta-K", "/input grab_raw_key_command");
BIND("meta-s", "/mute spell toggle");
BIND("meta-u", "/window scroll_unread");
BIND("ctrl-s,ctrl-u", "/allbuf /buffer set unread");
BIND("ctrl-c,b", "/input insert \\x02");
BIND("ctrl-c,c", "/input insert \\x03");
BIND("ctrl-c,i", "/input insert \\x1D");
BIND("ctrl-c,o", "/input insert \\x0F");
BIND("ctrl-c,v", "/input insert \\x16");
BIND("ctrl-c,_", "/input insert \\x1F");
BIND("meta-right", "/buffer +1");
BIND("meta-down", "/buffer +1");
BIND("f6", "/buffer +1");
BIND("ctrl-n", "/buffer +1");
BIND("meta-left", "/buffer -1");
BIND("meta-up", "/buffer -1");
BIND("f5", "/buffer -1");
BIND("ctrl-p", "/buffer -1");
BIND("pgup", "/window page_up");
BIND("pgdn", "/window page_down");
BIND("meta-pgup", "/window scroll_up");
BIND("meta-pgdn", "/window scroll_down");
BIND("meta-home", "/window scroll_top");
BIND("meta-end", "/window scroll_bottom");
BIND("meta-n", "/window scroll_next_highlight");
BIND("meta-p", "/window scroll_previous_highlight");
BIND("meta-N", "/bar toggle nicklist");
BIND("f9", "/bar scroll title * -30%");
BIND("f10", "/bar scroll title * +30%");
BIND("f11", "/bar scroll nicklist * -100%");
BIND("f12", "/bar scroll nicklist * +100%");
BIND("ctrl-f11", "/bar scroll nicklist * -100%");
BIND("ctrl-f12", "/bar scroll nicklist * +100%");
BIND("meta-f11", "/bar scroll nicklist * b");
BIND("meta-f12", "/bar scroll nicklist * e");
BIND("ctrl-l", "/window refresh");
BIND("f7", "/window -1");
BIND("f8", "/window +1");
BIND("meta-w,meta-up", "/window up");
BIND("meta-w,meta-down", "/window down");
BIND("meta-w,meta-right", "/window right");
BIND("meta-w,meta-left", "/window left");
BIND("meta-w,meta-b", "/window balance");
BIND("meta-w,meta-s", "/window swap");
BIND("meta-z", "/window zoom");
BIND("meta-=", "/filter toggle");
BIND("meta--", "/filter toggle @");
BIND("meta-0", "/buffer *10");
BIND("meta-1", "/buffer *1");
BIND("meta-2", "/buffer *2");
BIND("meta-3", "/buffer *3");
BIND("meta-4", "/buffer *4");
BIND("meta-5", "/buffer *5");
BIND("meta-6", "/buffer *6");
BIND("meta-7", "/buffer *7");
BIND("meta-8", "/buffer *8");
BIND("meta-9", "/buffer *9");
BIND("meta-<", "/buffer jump prev_visited");
BIND("meta->", "/buffer jump next_visited");
BIND("meta-/", "/buffer jump last_displayed");
BIND("meta-l", "/window bare");
BIND("meta-m", "/mute mouse toggle");
/* bind meta-j + {01..99} to switch to buffers # > 10 */
for (i = 1; i < 100; i++)
{
snprintf (key_str, sizeof (key_str), "meta-j,%1d,%1d", i / 10, i % 10);
snprintf (command, sizeof (command), "/buffer *%d", i);
BIND(key_str, command);
}
}
else if (context == GUI_KEY_CONTEXT_SEARCH)
{
BIND("return", "/input search_stop_here");
BIND("ctrl-q", "/input search_stop");
BIND("meta-c", "/input search_switch_case");
BIND("ctrl-r", "/input search_switch_regex");
BIND("tab", "/input search_switch_where");
BIND("up", "/input search_previous");
BIND("down", "/input search_next");
}
else if (context == GUI_KEY_CONTEXT_CURSOR)
{
/* general & move */
BIND("return", "/cursor stop");
BIND("up", "/cursor move up");
BIND("down", "/cursor move down");
BIND("left", "/cursor move left");
BIND("right", "/cursor move right");
BIND("meta-up", "/cursor move area_up");
BIND("meta-down", "/cursor move area_down");
BIND("meta-left", "/cursor move area_left");
BIND("meta-right","/cursor move area_right");
/* chat */
BIND("@chat:m", "hsignal:chat_quote_message;/cursor stop");
BIND("@chat:q", "hsignal:chat_quote_prefix_message;/cursor stop");
BIND("@chat:Q", "hsignal:chat_quote_time_prefix_message;/cursor stop");
/* nicklist */
BIND("@item(buffer_nicklist):b", "/window ${_window_number};/ban ${nick}");
BIND("@item(buffer_nicklist):k", "/window ${_window_number};/kick ${nick}");
BIND("@item(buffer_nicklist):K", "/window ${_window_number};/kickban ${nick}");
BIND("@item(buffer_nicklist):q", "/window ${_window_number};/query ${nick};/cursor stop");
BIND("@item(buffer_nicklist):w", "/window ${_window_number};/whois ${nick}");
}
else if (context == GUI_KEY_CONTEXT_MOUSE)
{
/* mouse events on chat area */
BIND("@chat:button1", "/window ${_window_number}");
BIND("@chat:button1-gesture-left", "/window ${_window_number};/buffer -1");
BIND("@chat:button1-gesture-right", "/window ${_window_number};/buffer +1");
BIND("@chat:button1-gesture-left-long", "/window ${_window_number};/buffer 1");
BIND("@chat:button1-gesture-right-long", "/window ${_window_number};/buffer +");
BIND("@chat:wheelup", "/window scroll_up -window ${_window_number}");
BIND("@chat:wheeldown", "/window scroll_down -window ${_window_number}");
BIND("@chat:ctrl-wheelup", "/window scroll_horiz -window ${_window_number} -10%");
BIND("@chat:ctrl-wheeldown", "/window scroll_horiz -window ${_window_number} +10%");
/* mouse events on nicklist */
BIND("@bar(nicklist):button1-gesture-up", "/bar scroll nicklist ${_window_number} -100%");
BIND("@bar(nicklist):button1-gesture-down", "/bar scroll nicklist ${_window_number} +100%");
BIND("@bar(nicklist):button1-gesture-up-long", "/bar scroll nicklist ${_window_number} b");
BIND("@bar(nicklist):button1-gesture-down-long", "/bar scroll nicklist ${_window_number} e");
BIND("@item(buffer_nicklist):button1", "/window ${_window_number};/query ${nick}");
BIND("@item(buffer_nicklist):button2", "/window ${_window_number};/whois ${nick}");
BIND("@item(buffer_nicklist):button1-gesture-left", "/window ${_window_number};/kick ${nick}");
BIND("@item(buffer_nicklist):button1-gesture-left-long", "/window ${_window_number};/kickban ${nick}");
BIND("@item(buffer_nicklist):button2-gesture-left", "/window ${_window_number};/ban ${nick}");
/* mouse events on input */
BIND("@bar(input):button2", "/input grab_mouse_area");
/* mouse wheel on any bar */
BIND("@bar:wheelup", "/bar scroll ${_bar_name} ${_window_number} -20%");
BIND("@bar:wheeldown", "/bar scroll ${_bar_name} ${_window_number} +20%");
/* middle click to enable cursor mode at position */
BIND("@*:button3", "/cursor go ${_x},${_y}");
}
}
/*
* Flushes keyboard buffer.
*/
void
gui_key_flush (int paste)
{
int i, key, last_key_used, insert_ok, undo_done;
static char key_str[64] = { '\0' };
static int length_key_str = 0;
char key_temp[2], *key_utf, *input_old, *ptr_char, *next_char, *ptr_error;
char utf_partial_char[16];
struct t_gui_buffer *old_buffer;
/* if paste pending or bracketed paste detected, just return */
if (gui_key_paste_pending || gui_key_paste_bracketed)
return;
/* if buffer is empty, just return */
if (gui_key_buffer_size == 0)
return;
/*
* if there's no paste pending, then we use buffer and do actions
* according to keys
*/
gui_key_last_activity_time = time (NULL);
last_key_used = -1;
undo_done = 0;
old_buffer = NULL;
for (i = 0; i < gui_key_buffer_size; i++)
{
key = gui_key_buffer[i];
insert_ok = 1;
utf_partial_char[0] = '\0';
if (gui_mouse_event_pending)
{
insert_ok = 0;
key_str[0] = (char)key;
key_str[1] = '\0';
length_key_str = 1;
}
else if (key < 32)
{
insert_ok = 0;
key_str[0] = '\x01';
key_str[1] = (char)key + '@';
/*
* note: the terminal makes no difference between ctrl-x and
* ctrl-shift-x, so for now WeeChat uses lower case letters for
* ctrl keys
*/
if ((key_str[1] >= 'A') && (key_str[1] <= 'Z'))
key_str[1] += 'a' - 'A';
key_str[2] = '\0';
length_key_str = 2;
}
else if (key == 127)
{
key_str[0] = '\x01';
key_str[1] = '?';
key_str[2] = '\0';
length_key_str = 2;
}
else if (local_utf8)
{
key_str[length_key_str] = (char)key;
key_str[length_key_str + 1] = '\0';
length_key_str++;
/*
* replace invalid chars by "?", but NOT last char of
* string, if it is incomplete UTF-8 char (another char
* will be added to the string on next iteration)
*/
ptr_char = key_str;
while (ptr_char && ptr_char[0])
{
(void) utf8_is_valid (ptr_char, -1, &ptr_error);
if (!ptr_error)
break;
next_char = (char *)utf8_next_char (ptr_error);
if (next_char && next_char[0])
{
ptr_char = ptr_error;
while (ptr_char < next_char)
{
ptr_char[0] = '?';
ptr_char++;
}
}
else
{
strcpy (utf_partial_char, ptr_char);
ptr_char[0] = '\0';
break;
}
ptr_char = next_char;
}
}
else
{
/* convert input to UTF-8 */
key_temp[0] = (char)key;
key_temp[1] = '\0';
key_utf = string_iconv_to_internal (NULL, key_temp);
strcat (key_str, key_utf);
}
if (key_str[0])
{
/*
* send the signal "key_pressed" only if NOT reading a mouse event
* or if the mouse code is valid UTF-8 (do not send partial mouse
* code which is not UTF-8 valid)
*/
if (!gui_mouse_event_pending || utf8_is_valid (key_str, -1, NULL))
{
(void) hook_signal_send ("key_pressed",
WEECHAT_HOOK_SIGNAL_STRING, key_str);
}
if (gui_current_window->buffer->text_search != GUI_TEXT_SEARCH_DISABLED)
input_old = (gui_current_window->buffer->input_buffer) ?
strdup (gui_current_window->buffer->input_buffer) : strdup ("");
else
input_old = NULL;
old_buffer = gui_current_window->buffer;
if ((gui_key_pressed (key_str) != 0) && (insert_ok)
&& (!gui_cursor_mode))
{
if (!paste || !undo_done)
gui_buffer_undo_snap (gui_current_window->buffer);
gui_input_insert_string (gui_current_window->buffer, key_str);
gui_input_text_changed_modifier_and_signal (gui_current_window->buffer,
(!paste || !undo_done) ? 1 : 0,
1); /* stop completion */
undo_done = 1;
}
/* incremental text search in buffer */
if ((old_buffer == gui_current_window->buffer)
&& (gui_current_window->buffer->text_search != GUI_TEXT_SEARCH_DISABLED)
&& ((input_old == NULL)
|| (gui_current_window->buffer->input_buffer == NULL)
|| (strcmp (input_old, gui_current_window->buffer->input_buffer) != 0)))
{
/*
* if following conditions are all true, then do not search
* again (search will not find any result and can take some time
* on a buffer with many lines):
* - old search was not successful
* - searching a string (not a regex)
* - current input is longer than old input
* - beginning of current input is exactly equal to old input.
*/
if (!gui_current_window->buffer->text_search_found
&& !gui_current_window->buffer->text_search_regex
&& (input_old != NULL)
&& (input_old[0])
&& (gui_current_window->buffer->input_buffer != NULL)
&& (gui_current_window->buffer->input_buffer[0])
&& (strlen (gui_current_window->buffer->input_buffer) > strlen (input_old))
&& (strncmp (gui_current_window->buffer->input_buffer, input_old,
strlen (input_old)) == 0))
{
/*
* do not search text in buffer, just alert about text not
* found
*/
if (CONFIG_BOOLEAN(config_look_search_text_not_found_alert))
{
fprintf (stderr, "\a");
fflush (stderr);
}
}
else
{
gui_window_search_restart (gui_current_window);
}
}
if (input_old)
free (input_old);
}
/* prepare incomplete UTF-8 char for next iteration */
if (utf_partial_char[0])
strcpy (key_str, utf_partial_char);
else
key_str[0] = '\0';
length_key_str = strlen (key_str);
/* set last key used in buffer if combo buffer is empty */
if (gui_key_grab || gui_mouse_event_pending || !gui_key_combo_buffer[0])
last_key_used = i;
}
if (last_key_used == gui_key_buffer_size - 1)
gui_key_buffer_reset ();
else if (last_key_used >= 0)
gui_key_buffer_remove (0, last_key_used + 1);
if (!gui_key_grab && !gui_mouse_event_pending)
gui_key_combo_buffer[0] = '\0';
}
/*
* Reads keyboard chars.
*/
int
gui_key_read_cb (const void *pointer, void *data, int fd)
{
int ret, i, accept_paste, cancel_paste, text_added_to_buffer, pos;
unsigned char buffer[4096];
/* make C compiler happy */
(void) pointer;
(void) data;
(void) fd;
accept_paste = 0;
cancel_paste = 0;
text_added_to_buffer = 0;
ret = read (STDIN_FILENO, buffer, sizeof (buffer));
if (ret == 0)
{
/* no data on stdin, terminal lost */
if (!weechat_quit)
{
log_printf (_("Terminal lost, exiting WeeChat..."));
(void) hook_signal_send ("quit", WEECHAT_HOOK_SIGNAL_STRING, NULL);
weechat_quit = 1;
}
return WEECHAT_RC_OK;
}
if (ret < 0)
return WEECHAT_RC_OK;
for (i = 0; i < ret; i++)
{
if (gui_key_paste_pending && (buffer[i] == 25))
{
/* ctrl-y: accept paste */
accept_paste = 1;
}
else if (gui_key_paste_pending && (buffer[i] == 14))
{
/* ctrl-n: cancel paste */
cancel_paste = 1;
}
else
{
gui_key_buffer_add (buffer[i]);
text_added_to_buffer = 1;
}
}
if (gui_key_paste_pending)
{
if (accept_paste)
{
/* user is OK for pasting text, let's paste! */
gui_key_paste_accept ();
}
else if (cancel_paste)
{
/* user doesn't want to paste text: clear whole buffer! */
gui_key_paste_cancel ();
}
else if (text_added_to_buffer)
{
/* new text received while asking for paste, update message */
gui_input_paste_pending_signal ();
}
}
else
{
if (!gui_key_paste_bracketed)
{
pos = gui_key_buffer_search (0, -1, GUI_KEY_BRACKETED_PASTE_START);
if (pos >= 0)
{
gui_key_buffer_remove (pos, GUI_KEY_BRACKETED_PASTE_LENGTH);
gui_key_paste_bracketed_start ();
}
}
if (!gui_key_paste_bracketed)
gui_key_paste_check (0);
}
gui_key_flush ((accept_paste) ? 1 : 0);
if (gui_key_paste_bracketed)
{
pos = gui_key_buffer_search (0, -1, GUI_KEY_BRACKETED_PASTE_END);
if (pos >= 0)
{
/* remove the code for end of bracketed paste (ESC[201~) */
gui_key_buffer_remove (pos, GUI_KEY_BRACKETED_PASTE_LENGTH);
/* remove final newline (if needed) */
gui_key_paste_remove_newline ();
/* replace tabs by spaces */
gui_key_paste_replace_tabs ();
/* stop bracketed mode */
gui_key_paste_bracketed_timer_remove ();
gui_key_paste_bracketed_stop ();
/* if paste confirmation not displayed, flush buffer now */
if (!gui_key_paste_pending)
gui_key_flush (1);
}
}
return WEECHAT_RC_OK;
}
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