Return to key-bindings.c CVS log

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Fix so that we work out the right pane from mouse events - we were doing
so too early, before the mouse event was necessarily valid, so could end
up using the pane from the previous mouse event, or the active pane.

It is important that we use the right pane now that different panes can
have different key tables (for copy mode).

Fixes problem reported by Greg Hurrell.

/* $OpenBSD: key-bindings.c,v 1.66 2016/11/24 13:46:50 nicm Exp $ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <ctype.h>
#include <stdlib.h>
#include <string.h>

#include "tmux.h"

RB_GENERATE(key_bindings, key_binding, entry, key_bindings_cmp);
RB_GENERATE(key_tables, key_table, entry, key_table_cmp);
struct key_tables key_tables = RB_INITIALIZER(&key_tables);

int
key_table_cmp(struct key_table *e1, struct key_table *e2)
{
	return (strcmp(e1->name, e2->name));
}

int
key_bindings_cmp(struct key_binding *bd1, struct key_binding *bd2)
{
	if (bd1->key < bd2->key)
		return (-1);
	if (bd1->key > bd2->key)
		return (1);
	return (0);
}

struct key_table *
key_bindings_get_table(const char *name, int create)
{
	struct key_table	table_find, *table;

	table_find.name = name;
	table = RB_FIND(key_tables, &key_tables, &table_find);
	if (table != NULL || !create)
		return (table);

	table = xmalloc(sizeof *table);
	table->name = xstrdup(name);
	RB_INIT(&table->key_bindings);

	table->references = 1; /* one reference in key_tables */
	RB_INSERT(key_tables, &key_tables, table);

	return (table);
}

void
key_bindings_unref_table(struct key_table *table)
{
	struct key_binding	*bd;
	struct key_binding	*bd1;

	if (--table->references != 0)
		return;

	RB_FOREACH_SAFE(bd, key_bindings, &table->key_bindings, bd1) {
		RB_REMOVE(key_bindings, &table->key_bindings, bd);
		cmd_list_free(bd->cmdlist);
		free(bd);
	}

	free((void *)table->name);
	free(table);
}

void
key_bindings_add(const char *name, key_code key, int can_repeat,
    struct cmd_list *cmdlist)
{
	struct key_table	*table;
	struct key_binding	 bd_find, *bd;

	table = key_bindings_get_table(name, 1);

	bd_find.key = key;
	bd = RB_FIND(key_bindings, &table->key_bindings, &bd_find);
	if (bd != NULL) {
		RB_REMOVE(key_bindings, &table->key_bindings, bd);
		cmd_list_free(bd->cmdlist);
		free(bd);
	}

	bd = xmalloc(sizeof *bd);
	bd->key = key;
	RB_INSERT(key_bindings, &table->key_bindings, bd);

	bd->can_repeat = can_repeat;
	bd->cmdlist = cmdlist;
}

void
key_bindings_remove(const char *name, key_code key)
{
	struct key_table	*table;
	struct key_binding	 bd_find, *bd;

	table = key_bindings_get_table(name, 0);
	if (table == NULL)
		return;

	bd_find.key = key;
	bd = RB_FIND(key_bindings, &table->key_bindings, &bd_find);
	if (bd == NULL)
		return;

	RB_REMOVE(key_bindings, &table->key_bindings, bd);
	cmd_list_free(bd->cmdlist);
	free(bd);

	if (RB_EMPTY(&table->key_bindings)) {
		RB_REMOVE(key_tables, &key_tables, table);
		key_bindings_unref_table(table);
	}
}

void
key_bindings_remove_table(const char *name)
{
	struct key_table	*table;

	table = key_bindings_get_table(name, 0);
	if (table != NULL) {
		RB_REMOVE(key_tables, &key_tables, table);
		key_bindings_unref_table(table);
	}
}

void
key_bindings_init(void)
{
	static const char *defaults[] = {
		"bind C-b send-prefix",
		"bind C-o rotate-window",
		"bind C-z suspend-client",
		"bind Space next-layout",
		"bind ! break-pane",
		"bind '\"' split-window",
		"bind '#' list-buffers",
		"bind '$' command-prompt -I'#S' \"rename-session '%%'\"",
		"bind % split-window -h",
		"bind & confirm-before -p\"kill-window #W? (y/n)\" kill-window",
		"bind \"'\" command-prompt -pindex \"select-window -t ':%%'\"",
		"bind ( switch-client -p",
		"bind ) switch-client -n",
		"bind , command-prompt -I'#W' \"rename-window '%%'\"",
		"bind - delete-buffer",
		"bind . command-prompt \"move-window -t '%%'\"",
		"bind 0 select-window -t:=0",
		"bind 1 select-window -t:=1",
		"bind 2 select-window -t:=2",
		"bind 3 select-window -t:=3",
		"bind 4 select-window -t:=4",
		"bind 5 select-window -t:=5",
		"bind 6 select-window -t:=6",
		"bind 7 select-window -t:=7",
		"bind 8 select-window -t:=8",
		"bind 9 select-window -t:=9",
		"bind : command-prompt",
		"bind \\; last-pane",
		"bind = choose-buffer",
		"bind ? list-keys",
		"bind D choose-client",
		"bind L switch-client -l",
		"bind M select-pane -M",
		"bind [ copy-mode",
		"bind ] paste-buffer",
		"bind c new-window",
		"bind d detach-client",
		"bind f command-prompt \"find-window '%%'\"",
		"bind i display-message",
		"bind l last-window",
		"bind m select-pane -m",
		"bind n next-window",
		"bind o select-pane -t:.+",
		"bind p previous-window",
		"bind q display-panes",
		"bind r refresh-client",
		"bind s choose-tree",
		"bind t clock-mode",
		"bind w choose-window",
		"bind x confirm-before -p\"kill-pane #P? (y/n)\" kill-pane",
		"bind z resize-pane -Z",
		"bind { swap-pane -U",
		"bind } swap-pane -D",
		"bind '~' show-messages",
		"bind PPage copy-mode -u",
		"bind -r Up select-pane -U",
		"bind -r Down select-pane -D",
		"bind -r Left select-pane -L",
		"bind -r Right select-pane -R",
		"bind M-1 select-layout even-horizontal",
		"bind M-2 select-layout even-vertical",
		"bind M-3 select-layout main-horizontal",
		"bind M-4 select-layout main-vertical",
		"bind M-5 select-layout tiled",
		"bind M-n next-window -a",
		"bind M-o rotate-window -D",
		"bind M-p previous-window -a",
		"bind -r M-Up resize-pane -U 5",
		"bind -r M-Down resize-pane -D 5",
		"bind -r M-Left resize-pane -L 5",
		"bind -r M-Right resize-pane -R 5",
		"bind -r C-Up resize-pane -U",
		"bind -r C-Down resize-pane -D",
		"bind -r C-Left resize-pane -L",
		"bind -r C-Right resize-pane -R",
		"bind -n MouseDown1Pane select-pane -t=\\; send-keys -M",
		"bind -n MouseDrag1Border resize-pane -M",
		"bind -n MouseDown1Status select-window -t=",
		"bind -n WheelDownStatus next-window",
		"bind -n WheelUpStatus previous-window",
		"bind -n MouseDrag1Pane if -Ft= '#{mouse_any_flag}' 'if -Ft= \"#{pane_in_mode}\" \"copy-mode -M\" \"send-keys -M\"' 'copy-mode -M'",
		"bind -n MouseDown3Pane if-shell -Ft= '#{mouse_any_flag}' 'select-pane -t=; send-keys -M' 'select-pane -mt='",
		"bind -n WheelUpPane if-shell -Ft= '#{mouse_any_flag}' 'send-keys -M' 'if -Ft= \"#{pane_in_mode}\" \"send-keys -M\" \"copy-mode -et=\"'",

		"bind -Tcopy-mode C-Space send -X begin-selection",
		"bind -Tcopy-mode C-a send -X start-of-line",
		"bind -Tcopy-mode C-c send -X cancel",
		"bind -Tcopy-mode C-e send -X end-of-line",
		"bind -Tcopy-mode C-f send -X cursor-right",
		"bind -Tcopy-mode C-g send -X clear-selection",
		"bind -Tcopy-mode C-k send -X copy-end-of-line",
		"bind -Tcopy-mode C-n send -X cursor-down",
		"bind -Tcopy-mode C-p send -X cursor-up",
		"bind -Tcopy-mode C-r command-prompt -p'search up' \"send -X search-backward \\\"%%%\\\"\"",
		"bind -Tcopy-mode C-s command-prompt -p'search down' \"send -X search-forward \\\"%%%\\\"\"",
		"bind -Tcopy-mode C-v send -X page-down",
		"bind -Tcopy-mode C-w send -X copy-selection-and-cancel",
		"bind -Tcopy-mode Escape send -X cancel",
		"bind -Tcopy-mode Space send -X page-down",
		"bind -Tcopy-mode , send -X jump-reverse",
		"bind -Tcopy-mode \\; send -X jump-again",
		"bind -Tcopy-mode F command-prompt -1p'jump backward' \"send -X jump-backward \\\"%%%\\\"\"",
		"bind -Tcopy-mode N send -X search-reverse",
		"bind -Tcopy-mode R send -X rectangle-toggle",
		"bind -Tcopy-mode T command-prompt -1p'jump to backward' \"send -X jump-to-backward \\\"%%%\\\"\"",
		"bind -Tcopy-mode f command-prompt -1p'jump forward' \"send -X jump-forward \\\"%%%\\\"\"",
		"bind -Tcopy-mode g command-prompt -p'goto line' \"send -X goto-line '%%'\"",
		"bind -Tcopy-mode n send -X search-again",
		"bind -Tcopy-mode q send -X cancel",
		"bind -Tcopy-mode t command-prompt -1p'jump to forward' \"send -X jump-to-forward \\\"%%%\\\"\"",
		"bind -Tcopy-mode MouseDown1Pane select-pane",
		"bind -Tcopy-mode MouseDrag1Pane select-pane\\; send -X begin-selection",
		"bind -Tcopy-mode MouseDragEnd1Pane send -X copy-selection-and-cancel",
		"bind -Tcopy-mode WheelUpPane select-pane\\; send -N5 -X scroll-up",
		"bind -Tcopy-mode WheelDownPane select-pane\\; send -N5 -X scroll-down",
		"bind -Tcopy-mode DoubleClick1Pane select-pane\\; send -X select-word",
		"bind -Tcopy-mode TripleClick1Pane select-pane\\; send -X select-line",
		"bind -Tcopy-mode NPage send -X page-down",
		"bind -Tcopy-mode PPage send -X page-up",
		"bind -Tcopy-mode Up send -X cursor-up",
		"bind -Tcopy-mode Down send -X cursor-down",
		"bind -Tcopy-mode Left send -X cursor-left",
		"bind -Tcopy-mode Right send -X cursor-right",
		"bind -Tcopy-mode M-1 command-prompt -Np'repeat' -I1 \"send -N '%%'\"",
		"bind -Tcopy-mode M-2 command-prompt -Np'repeat' -I2 \"send -N '%%'\"",
		"bind -Tcopy-mode M-3 command-prompt -Np'repeat' -I3 \"send -N '%%'\"",
		"bind -Tcopy-mode M-4 command-prompt -Np'repeat' -I4 \"send -N '%%'\"",
		"bind -Tcopy-mode M-5 command-prompt -Np'repeat' -I5 \"send -N '%%'\"",
		"bind -Tcopy-mode M-6 command-prompt -Np'repeat' -I6 \"send -N '%%'\"",
		"bind -Tcopy-mode M-7 command-prompt -Np'repeat' -I7 \"send -N '%%'\"",
		"bind -Tcopy-mode M-8 command-prompt -Np'repeat' -I8 \"send -N '%%'\"",
		"bind -Tcopy-mode M-9 command-prompt -Np'repeat' -I9 \"send -N '%%'\"",
		"bind -Tcopy-mode M-< send -X history-top",
		"bind -Tcopy-mode M-> send -X history-bottom",
		"bind -Tcopy-mode M-R send -X top-line",
		"bind -Tcopy-mode M-b send -X previous-word",
		"bind -Tcopy-mode M-f send -X next-word-end",
		"bind -Tcopy-mode M-m send -X back-to-indentation",
		"bind -Tcopy-mode M-r send -X middle-line",
		"bind -Tcopy-mode M-v send -X page-up",
		"bind -Tcopy-mode M-w send -X copy-selection-and-cancel",
		"bind -Tcopy-mode M-{ send -X previous-paragraph",
		"bind -Tcopy-mode M-} send -X next-paragraph",
		"bind -Tcopy-mode M-Up send -X halfpage-up",
		"bind -Tcopy-mode M-Down send -X halfpage-down",
		"bind -Tcopy-mode C-Up send -X scroll-up",
		"bind -Tcopy-mode C-Down send -X scroll-down",

		"bind -Tcopy-mode-vi C-c send -X cancel",
		"bind -Tcopy-mode-vi C-d send -X halfpage-down",
		"bind -Tcopy-mode-vi C-e send -X scroll-down",
		"bind -Tcopy-mode-vi C-f send -X page-down",
		"bind -Tcopy-mode-vi C-h send -X cursor-left",
		"bind -Tcopy-mode-vi C-j send -X copy-selection-and-cancel",
		"bind -Tcopy-mode-vi Enter send -X copy-selection-and-cancel",
		"bind -Tcopy-mode-vi C-u send -X halfpage-up",
		"bind -Tcopy-mode-vi C-v send -X rectangle-toggle",
		"bind -Tcopy-mode-vi C-y send -X scroll-up",
		"bind -Tcopy-mode-vi Escape send -X clear-selection",
		"bind -Tcopy-mode-vi Space send -X begin-selection",
		"bind -Tcopy-mode-vi '$' send -X end-of-line",
		"bind -Tcopy-mode-vi , send -X jump-reverse",
		"bind -Tcopy-mode-vi / command-prompt -p'search down' \"send -X search-forward \\\"%%%\\\"\"",
		"bind -Tcopy-mode-vi 0 send -X start-of-line",
		"bind -Tcopy-mode-vi 1 command-prompt -Np'repeat' -I1 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 2 command-prompt -Np'repeat' -I2 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 3 command-prompt -Np'repeat' -I3 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 4 command-prompt -Np'repeat' -I4 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 5 command-prompt -Np'repeat' -I5 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 6 command-prompt -Np'repeat' -I6 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 7 command-prompt -Np'repeat' -I7 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 8 command-prompt -Np'repeat' -I8 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi 9 command-prompt -Np'repeat' -I9 \"send -N '%%'\"",
		"bind -Tcopy-mode-vi : command-prompt -p'goto line' \"send -X goto-line '%%'\"",
		"bind -Tcopy-mode-vi \\; send -X jump-again",
		"bind -Tcopy-mode-vi ? command-prompt -p'search up' \"send -X search-backward \\\"%%%\\\"\"",
		"bind -Tcopy-mode-vi A send -X append-selection-and-cancel",
		"bind -Tcopy-mode-vi B send -X previous-space",
		"bind -Tcopy-mode-vi D send -X copy-end-of-line",
		"bind -Tcopy-mode-vi E send -X next-space-end",
		"bind -Tcopy-mode-vi F command-prompt -1p'jump backward' \"send -X jump-backward \\\"%%%\\\"\"",
		"bind -Tcopy-mode-vi G send -X history-bottom",
		"bind -Tcopy-mode-vi H send -X top-line",
		"bind -Tcopy-mode-vi J send -X scroll-down",
		"bind -Tcopy-mode-vi K send -X scroll-up",
		"bind -Tcopy-mode-vi L send -X bottom-line",
		"bind -Tcopy-mode-vi M send -X middle-line",
		"bind -Tcopy-mode-vi N send -X search-reverse",
		"bind -Tcopy-mode-vi T command-prompt -1p'jump to backward' \"send -X jump-to-backward \\\"%%%\\\"\"",
		"bind -Tcopy-mode-vi V send -X select-line",
		"bind -Tcopy-mode-vi W send -X next-space",
		"bind -Tcopy-mode-vi ^ send -X back-to-indentation",
		"bind -Tcopy-mode-vi b send -X previous-word",
		"bind -Tcopy-mode-vi e send -X next-word-end",
		"bind -Tcopy-mode-vi f command-prompt -1p'jump forward' \"send -X jump-forward \\\"%%%\\\"\"",
		"bind -Tcopy-mode-vi g send -X history-top",
		"bind -Tcopy-mode-vi h send -X cursor-left",
		"bind -Tcopy-mode-vi j send -X cursor-down",
		"bind -Tcopy-mode-vi k send -X cursor-up",
		"bind -Tcopy-mode-vi l send -X cursor-right",
		"bind -Tcopy-mode-vi n send -X search-again",
		"bind -Tcopy-mode-vi o send -X other-end",
		"bind -Tcopy-mode-vi q send -X cancel",
		"bind -Tcopy-mode-vi t command-prompt -1p'jump to forward' \"send -X jump-to-forward \\\"%%%\\\"\"",
		"bind -Tcopy-mode-vi v send -X rectangle-toggle",
		"bind -Tcopy-mode-vi w send -X next-word",
		"bind -Tcopy-mode-vi { send -X previous-paragraph",
		"bind -Tcopy-mode-vi } send -X next-paragraph",
		"bind -Tcopy-mode-vi MouseDown1Pane select-pane",
		"bind -Tcopy-mode-vi MouseDrag1Pane select-pane\\; send -X begin-selection",
		"bind -Tcopy-mode-vi MouseDragEnd1Pane send -X copy-selection-and-cancel",
		"bind -Tcopy-mode-vi WheelUpPane select-pane\\; send -N5 -X scroll-up",
		"bind -Tcopy-mode-vi WheelDownPane select-pane\\; send -N5 -X scroll-down",
		"bind -Tcopy-mode-vi DoubleClick1Pane select-pane\\; send -X select-word",
		"bind -Tcopy-mode-vi TripleClick1Pane select-pane\\; send -X select-line",
		"bind -Tcopy-mode-vi BSpace send -X cursor-left",
		"bind -Tcopy-mode-vi NPage send -X page-down",
		"bind -Tcopy-mode-vi PPage send -X page-up",
		"bind -Tcopy-mode-vi Up send -X cursor-up",
		"bind -Tcopy-mode-vi Down send -X cursor-down",
		"bind -Tcopy-mode-vi Left send -X cursor-left",
		"bind -Tcopy-mode-vi Right send -X cursor-right",
		"bind -Tcopy-mode-vi C-Up send -X scroll-up",
		"bind -Tcopy-mode-vi C-Down send -X scroll-down",
	};
	u_int		 i;
	struct cmd_list	*cmdlist;
	char		*cause;
	int		 error;

	for (i = 0; i < nitems(defaults); i++) {
		error = cmd_string_parse(defaults[i], &cmdlist,
		    "<default-keys>", i, &cause);
		if (error != 0)
			fatalx("bad default key");
		cmdq_append(NULL, cmdq_get_command(cmdlist, NULL, NULL, 0));
		cmd_list_free(cmdlist);
	}
}

static enum cmd_retval
key_bindings_read_only(struct cmdq_item *item, __unused void *data)
{
	cmdq_error(item, "client is read-only");
	return (CMD_RETURN_ERROR);
}

void
key_bindings_dispatch(struct key_binding *bd, struct client *c,
    struct mouse_event *m, struct cmd_find_state *fs)
{
	struct cmd	*cmd;
	int		 readonly;

	readonly = 1;
	TAILQ_FOREACH(cmd, &bd->cmdlist->list, qentry) {
		if (!(cmd->entry->flags & CMD_READONLY))
			readonly = 0;
	}
	if (!readonly && (c->flags & CLIENT_READONLY))
		cmdq_append(c, cmdq_get_callback(key_bindings_read_only, NULL));
	else
		cmdq_append(c, cmdq_get_command(bd->cmdlist, fs, m, 0));
}