mode-key.c - tmux - Rivoreo Source Code Repositories

 /* $OpenBSD$ */

 /*
  * Copyright (c) 2008 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 <string.h>

 #include "tmux.h"

 /*
  * Mode keys. These are the key bindings used when editing (status prompt), and
  * in the modes. They are split into two sets of three tables, one set of three
  * for vi and the other for emacs key bindings. The three tables are for
  * editing, for menu-like modes (choice, more), and for copy modes (copy,
  * scroll).
  *
  * The fixed tables of struct mode_key_entry below are the defaults: they are
  * built into a tree of struct mode_key_binding by mode_key_init_trees, which
  * can then be modified.
  *
  * vi command mode is handled by having a mode flag in the struct which allows
  * two sets of bindings to be swapped between. A couple of editing commands
  * (any matching MODEKEYEDIT_SWITCHMODE*) are special-cased to do this.
  */

 /* Command to string mapping. */
 struct mode_key_cmdstr {
 	enum mode_key_cmd	 cmd;
 	const char		*name;
 };

 /* Entry in the default mode key tables. */
 struct mode_key_entry {
 	key_code		key;
 	enum mode_key_cmd	cmd;
 };

 /* Choice keys command strings. */
 static const struct mode_key_cmdstr mode_key_cmdstr_choice[] = {
 	{ MODEKEYCHOICE_BACKSPACE, "backspace" },
 	{ MODEKEYCHOICE_BOTTOMLINE, "bottom-line"},
 	{ MODEKEYCHOICE_CANCEL, "cancel" },
 	{ MODEKEYCHOICE_CHOOSE, "choose" },
 	{ MODEKEYCHOICE_DOWN, "down" },
 	{ MODEKEYCHOICE_ENDOFLIST, "end-of-list"},
 	{ MODEKEYCHOICE_PAGEDOWN, "page-down" },
 	{ MODEKEYCHOICE_PAGEUP, "page-up" },
 	{ MODEKEYCHOICE_SCROLLDOWN, "scroll-down" },
 	{ MODEKEYCHOICE_SCROLLUP, "scroll-up" },
 	{ MODEKEYCHOICE_STARTNUMBERPREFIX, "start-number-prefix" },
 	{ MODEKEYCHOICE_STARTOFLIST, "start-of-list"},
 	{ MODEKEYCHOICE_TOPLINE, "top-line"},
 	{ MODEKEYCHOICE_TREE_COLLAPSE, "tree-collapse" },
 	{ MODEKEYCHOICE_TREE_COLLAPSE_ALL, "tree-collapse-all" },
 	{ MODEKEYCHOICE_TREE_EXPAND, "tree-expand" },
 	{ MODEKEYCHOICE_TREE_EXPAND_ALL, "tree-expand-all" },
 	{ MODEKEYCHOICE_TREE_TOGGLE, "tree-toggle" },
 	{ MODEKEYCHOICE_UP, "up" },

 	{ 0, NULL }
 };

 /* vi choice selection keys. */
 static const struct mode_key_entry mode_key_vi_choice[] = {
 	{ '0' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '1' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '2' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '3' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '4' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '5' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '6' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '7' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '8' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '9' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '\002' /* C-b */,	    MODEKEYCHOICE_PAGEUP },
 	{ '\003' /* C-c */,	    MODEKEYCHOICE_CANCEL },
 	{ '\005' /* C-e */,	    MODEKEYCHOICE_SCROLLDOWN },
 	{ '\006' /* C-f */,	    MODEKEYCHOICE_PAGEDOWN },
 	{ '\031' /* C-y */,	    MODEKEYCHOICE_SCROLLUP },
 	{ '\n',			    MODEKEYCHOICE_CHOOSE },
 	{ '\r',			    MODEKEYCHOICE_CHOOSE },
 	{ 'j',			    MODEKEYCHOICE_DOWN },
 	{ 'k',			    MODEKEYCHOICE_UP },
 	{ 'q',			    MODEKEYCHOICE_CANCEL },
 	{ KEYC_HOME,                MODEKEYCHOICE_STARTOFLIST },
 	{ 'g',                      MODEKEYCHOICE_STARTOFLIST },
 	{ 'H',                      MODEKEYCHOICE_TOPLINE },
 	{ 'L',                      MODEKEYCHOICE_BOTTOMLINE },
 	{ 'G',                      MODEKEYCHOICE_ENDOFLIST },
 	{ KEYC_END,                 MODEKEYCHOICE_ENDOFLIST },
 	{ KEYC_BSPACE,		    MODEKEYCHOICE_BACKSPACE },
 	{ KEYC_DOWN | KEYC_CTRL,    MODEKEYCHOICE_SCROLLDOWN },
 	{ KEYC_DOWN,		    MODEKEYCHOICE_DOWN },
 	{ KEYC_NPAGE,		    MODEKEYCHOICE_PAGEDOWN },
 	{ KEYC_PPAGE,		    MODEKEYCHOICE_PAGEUP },
 	{ KEYC_UP | KEYC_CTRL,	    MODEKEYCHOICE_SCROLLUP },
 	{ KEYC_UP,		    MODEKEYCHOICE_UP },
 	{ ' ',			    MODEKEYCHOICE_TREE_TOGGLE },
 	{ KEYC_LEFT,		    MODEKEYCHOICE_TREE_COLLAPSE },
 	{ KEYC_RIGHT,		    MODEKEYCHOICE_TREE_EXPAND },
 	{ KEYC_LEFT | KEYC_CTRL,    MODEKEYCHOICE_TREE_COLLAPSE_ALL },
 	{ KEYC_RIGHT | KEYC_CTRL,   MODEKEYCHOICE_TREE_EXPAND_ALL },
 	{ KEYC_MOUSEDOWN1_PANE,     MODEKEYCHOICE_CHOOSE },
 	{ KEYC_MOUSEDOWN3_PANE,     MODEKEYCHOICE_TREE_TOGGLE },
 	{ KEYC_WHEELUP_PANE,        MODEKEYCHOICE_UP },
 	{ KEYC_WHEELDOWN_PANE,      MODEKEYCHOICE_DOWN },

 	{ KEYC_NONE, -1 }
 };
 struct mode_key_tree mode_key_tree_vi_choice;

 /* emacs choice selection keys. */
 static const struct mode_key_entry mode_key_emacs_choice[] = {
 	{ '0' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '1' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '2' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '3' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '4' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '5' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '6' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '7' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '8' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '9' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTNUMBERPREFIX },
 	{ '\003' /* C-c */,	    MODEKEYCHOICE_CANCEL },
 	{ '\016' /* C-n */,	    MODEKEYCHOICE_DOWN },
 	{ '\020' /* C-p */,	    MODEKEYCHOICE_UP },
 	{ '\026' /* C-v */,	    MODEKEYCHOICE_PAGEDOWN },
 	{ '\033' /* Escape */,	    MODEKEYCHOICE_CANCEL },
 	{ '\n',			    MODEKEYCHOICE_CHOOSE },
 	{ '\r',			    MODEKEYCHOICE_CHOOSE },
 	{ 'q',			    MODEKEYCHOICE_CANCEL },
 	{ 'v' | KEYC_ESCAPE,	    MODEKEYCHOICE_PAGEUP },
 	{ KEYC_HOME,                MODEKEYCHOICE_STARTOFLIST },
 	{ '<' | KEYC_ESCAPE,	    MODEKEYCHOICE_STARTOFLIST },
 	{ 'R' | KEYC_ESCAPE,	    MODEKEYCHOICE_TOPLINE },
 	{ '>' | KEYC_ESCAPE,	    MODEKEYCHOICE_ENDOFLIST },
 	{ KEYC_END,                 MODEKEYCHOICE_ENDOFLIST },
 	{ KEYC_BSPACE,		    MODEKEYCHOICE_BACKSPACE },
 	{ KEYC_DOWN | KEYC_CTRL,    MODEKEYCHOICE_SCROLLDOWN },
 	{ KEYC_DOWN,		    MODEKEYCHOICE_DOWN },
 	{ KEYC_NPAGE,		    MODEKEYCHOICE_PAGEDOWN },
 	{ KEYC_PPAGE,		    MODEKEYCHOICE_PAGEUP },
 	{ KEYC_UP | KEYC_CTRL,	    MODEKEYCHOICE_SCROLLUP },
 	{ KEYC_UP,		    MODEKEYCHOICE_UP },
 	{ ' ',			    MODEKEYCHOICE_TREE_TOGGLE },
 	{ KEYC_LEFT,		    MODEKEYCHOICE_TREE_COLLAPSE },
 	{ KEYC_RIGHT,		    MODEKEYCHOICE_TREE_EXPAND },
 	{ KEYC_LEFT | KEYC_CTRL,    MODEKEYCHOICE_TREE_COLLAPSE_ALL },
 	{ KEYC_RIGHT | KEYC_CTRL,   MODEKEYCHOICE_TREE_EXPAND_ALL },
 	{ KEYC_MOUSEDOWN1_PANE,     MODEKEYCHOICE_CHOOSE },
 	{ KEYC_MOUSEDOWN3_PANE,     MODEKEYCHOICE_TREE_TOGGLE },
 	{ KEYC_WHEELUP_PANE,        MODEKEYCHOICE_UP },
 	{ KEYC_WHEELDOWN_PANE,      MODEKEYCHOICE_DOWN },

 	{ KEYC_NONE, -1 }
 };
 struct mode_key_tree mode_key_tree_emacs_choice;

 /* Table mapping key table names to default settings and trees. */
 static const struct mode_key_table mode_key_tables[] = {
 	{ "vi-choice", mode_key_cmdstr_choice,
 	  &mode_key_tree_vi_choice, mode_key_vi_choice },
 	{ "emacs-choice", mode_key_cmdstr_choice,
 	  &mode_key_tree_emacs_choice, mode_key_emacs_choice },

 	{ NULL, NULL, NULL, NULL }
 };

 RB_GENERATE(mode_key_tree, mode_key_binding, entry, mode_key_cmp);

 int
 mode_key_cmp(struct mode_key_binding *mbind1, struct mode_key_binding *mbind2)
 {
 	if (mbind1->key < mbind2->key)
 		return (-1);
 	if (mbind1->key > mbind2->key)
 		return (1);
 	return (0);
 }

 const char *
 mode_key_tostring(const struct mode_key_cmdstr *cmdstr, enum mode_key_cmd cmd)
 {
 	for (; cmdstr->name != NULL; cmdstr++) {
 		if (cmdstr->cmd == cmd)
 			return (cmdstr->name);
 	}
 	return (NULL);
 }

 enum mode_key_cmd
 mode_key_fromstring(const struct mode_key_cmdstr *cmdstr, const char *name)
 {
 	for (; cmdstr->name != NULL; cmdstr++) {
 		if (strcasecmp(cmdstr->name, name) == 0)
 			return (cmdstr->cmd);
 	}
 	return (MODEKEY_NONE);
 }

 const struct mode_key_table *
 mode_key_findtable(const char *name)
 {
 	const struct mode_key_table	*mtab;

 	for (mtab = mode_key_tables; mtab->name != NULL; mtab++) {
 		if (strcasecmp(name, mtab->name) == 0)
 			return (mtab);
 	}
 	return (NULL);
 }

 void
 mode_key_init_trees(void)
 {
 	const struct mode_key_table	*mtab;
 	const struct mode_key_entry	*ment;
 	struct mode_key_binding		*mbind;

 	for (mtab = mode_key_tables; mtab->name != NULL; mtab++) {
 		RB_INIT(mtab->tree);
 		for (ment = mtab->table; ment->key != KEYC_NONE; ment++) {
 			mbind = xmalloc(sizeof *mbind);
 			mbind->key = ment->key;
 			mbind->cmd = ment->cmd;
 			RB_INSERT(mode_key_tree, mtab->tree, mbind);
 		}
 	}
 }

 void
 mode_key_init(struct mode_key_data *mdata, struct mode_key_tree *mtree)
 {
 	mdata->tree = mtree;
 }

 enum mode_key_cmd
 mode_key_lookup(struct mode_key_data *mdata, key_code key)
 {
 	struct mode_key_binding	*mbind, mtmp;

 	mtmp.key = key;
 	if ((mbind = RB_FIND(mode_key_tree, mdata->tree, &mtmp)) == NULL)
 		return (MODEKEY_OTHER);
 	return (mbind->cmd);
 }
	/* $OpenBSD$ */

	/*
	* Copyright (c) 2008 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 <string.h>

	#include "tmux.h"

	/*
	* Mode keys. These are the key bindings used when editing (status prompt), and
	* in the modes. They are split into two sets of three tables, one set of three
	* for vi and the other for emacs key bindings. The three tables are for
	* editing, for menu-like modes (choice, more), and for copy modes (copy,
	* scroll).
	*
	* The fixed tables of struct mode_key_entry below are the defaults: they are
	* built into a tree of struct mode_key_binding by mode_key_init_trees, which
	* can then be modified.
	*
	* vi command mode is handled by having a mode flag in the struct which allows
	* two sets of bindings to be swapped between. A couple of editing commands
	* (any matching MODEKEYEDIT_SWITCHMODE*) are special-cased to do this.
	*/

	/* Command to string mapping. */
	struct mode_key_cmdstr {
	enum mode_key_cmd cmd;
	const char *name;
	};

	/* Entry in the default mode key tables. */
	struct mode_key_entry {
	key_code key;
	enum mode_key_cmd cmd;
	};

	/* Choice keys command strings. */
	static const struct mode_key_cmdstr mode_key_cmdstr_choice[] = {
	{ MODEKEYCHOICE_BACKSPACE, "backspace" },
	{ MODEKEYCHOICE_BOTTOMLINE, "bottom-line"},
	{ MODEKEYCHOICE_CANCEL, "cancel" },
	{ MODEKEYCHOICE_CHOOSE, "choose" },
	{ MODEKEYCHOICE_DOWN, "down" },
	{ MODEKEYCHOICE_ENDOFLIST, "end-of-list"},
	{ MODEKEYCHOICE_PAGEDOWN, "page-down" },
	{ MODEKEYCHOICE_PAGEUP, "page-up" },
	{ MODEKEYCHOICE_SCROLLDOWN, "scroll-down" },
	{ MODEKEYCHOICE_SCROLLUP, "scroll-up" },
	{ MODEKEYCHOICE_STARTNUMBERPREFIX, "start-number-prefix" },
	{ MODEKEYCHOICE_STARTOFLIST, "start-of-list"},
	{ MODEKEYCHOICE_TOPLINE, "top-line"},
	{ MODEKEYCHOICE_TREE_COLLAPSE, "tree-collapse" },
	{ MODEKEYCHOICE_TREE_COLLAPSE_ALL, "tree-collapse-all" },
	{ MODEKEYCHOICE_TREE_EXPAND, "tree-expand" },
	{ MODEKEYCHOICE_TREE_EXPAND_ALL, "tree-expand-all" },
	{ MODEKEYCHOICE_TREE_TOGGLE, "tree-toggle" },
	{ MODEKEYCHOICE_UP, "up" },

	{ 0, NULL }
	};

	/* vi choice selection keys. */
	static const struct mode_key_entry mode_key_vi_choice[] = {
	{ '0' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '1' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '2' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '3' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '4' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '5' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '6' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '7' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '8' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '9' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '\002' /* C-b */, MODEKEYCHOICE_PAGEUP },
	{ '\003' /* C-c */, MODEKEYCHOICE_CANCEL },
	{ '\005' /* C-e */, MODEKEYCHOICE_SCROLLDOWN },
	{ '\006' /* C-f */, MODEKEYCHOICE_PAGEDOWN },
	{ '\031' /* C-y */, MODEKEYCHOICE_SCROLLUP },
	{ '\n', MODEKEYCHOICE_CHOOSE },
	{ '\r', MODEKEYCHOICE_CHOOSE },
	{ 'j', MODEKEYCHOICE_DOWN },
	{ 'k', MODEKEYCHOICE_UP },
	{ 'q', MODEKEYCHOICE_CANCEL },
	{ KEYC_HOME, MODEKEYCHOICE_STARTOFLIST },
	{ 'g', MODEKEYCHOICE_STARTOFLIST },
	{ 'H', MODEKEYCHOICE_TOPLINE },
	{ 'L', MODEKEYCHOICE_BOTTOMLINE },
	{ 'G', MODEKEYCHOICE_ENDOFLIST },
	{ KEYC_END, MODEKEYCHOICE_ENDOFLIST },
	{ KEYC_BSPACE, MODEKEYCHOICE_BACKSPACE },
	{ KEYC_DOWN \| KEYC_CTRL, MODEKEYCHOICE_SCROLLDOWN },
	{ KEYC_DOWN, MODEKEYCHOICE_DOWN },
	{ KEYC_NPAGE, MODEKEYCHOICE_PAGEDOWN },
	{ KEYC_PPAGE, MODEKEYCHOICE_PAGEUP },
	{ KEYC_UP \| KEYC_CTRL, MODEKEYCHOICE_SCROLLUP },
	{ KEYC_UP, MODEKEYCHOICE_UP },
	{ ' ', MODEKEYCHOICE_TREE_TOGGLE },
	{ KEYC_LEFT, MODEKEYCHOICE_TREE_COLLAPSE },
	{ KEYC_RIGHT, MODEKEYCHOICE_TREE_EXPAND },
	{ KEYC_LEFT \| KEYC_CTRL, MODEKEYCHOICE_TREE_COLLAPSE_ALL },
	{ KEYC_RIGHT \| KEYC_CTRL, MODEKEYCHOICE_TREE_EXPAND_ALL },
	{ KEYC_MOUSEDOWN1_PANE, MODEKEYCHOICE_CHOOSE },
	{ KEYC_MOUSEDOWN3_PANE, MODEKEYCHOICE_TREE_TOGGLE },
	{ KEYC_WHEELUP_PANE, MODEKEYCHOICE_UP },
	{ KEYC_WHEELDOWN_PANE, MODEKEYCHOICE_DOWN },

	{ KEYC_NONE, -1 }
	};
	struct mode_key_tree mode_key_tree_vi_choice;

	/* emacs choice selection keys. */
	static const struct mode_key_entry mode_key_emacs_choice[] = {
	{ '0' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '1' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '2' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '3' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '4' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '5' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '6' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '7' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '8' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '9' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTNUMBERPREFIX },
	{ '\003' /* C-c */, MODEKEYCHOICE_CANCEL },
	{ '\016' /* C-n */, MODEKEYCHOICE_DOWN },
	{ '\020' /* C-p */, MODEKEYCHOICE_UP },
	{ '\026' /* C-v */, MODEKEYCHOICE_PAGEDOWN },
	{ '\033' /* Escape */, MODEKEYCHOICE_CANCEL },
	{ '\n', MODEKEYCHOICE_CHOOSE },
	{ '\r', MODEKEYCHOICE_CHOOSE },
	{ 'q', MODEKEYCHOICE_CANCEL },
	{ 'v' \| KEYC_ESCAPE, MODEKEYCHOICE_PAGEUP },
	{ KEYC_HOME, MODEKEYCHOICE_STARTOFLIST },
	{ '<' \| KEYC_ESCAPE, MODEKEYCHOICE_STARTOFLIST },
	{ 'R' \| KEYC_ESCAPE, MODEKEYCHOICE_TOPLINE },
	{ '>' \| KEYC_ESCAPE, MODEKEYCHOICE_ENDOFLIST },
	{ KEYC_END, MODEKEYCHOICE_ENDOFLIST },
	{ KEYC_BSPACE, MODEKEYCHOICE_BACKSPACE },
	{ KEYC_DOWN \| KEYC_CTRL, MODEKEYCHOICE_SCROLLDOWN },
	{ KEYC_DOWN, MODEKEYCHOICE_DOWN },
	{ KEYC_NPAGE, MODEKEYCHOICE_PAGEDOWN },
	{ KEYC_PPAGE, MODEKEYCHOICE_PAGEUP },
	{ KEYC_UP \| KEYC_CTRL, MODEKEYCHOICE_SCROLLUP },
	{ KEYC_UP, MODEKEYCHOICE_UP },
	{ ' ', MODEKEYCHOICE_TREE_TOGGLE },
	{ KEYC_LEFT, MODEKEYCHOICE_TREE_COLLAPSE },
	{ KEYC_RIGHT, MODEKEYCHOICE_TREE_EXPAND },
	{ KEYC_LEFT \| KEYC_CTRL, MODEKEYCHOICE_TREE_COLLAPSE_ALL },
	{ KEYC_RIGHT \| KEYC_CTRL, MODEKEYCHOICE_TREE_EXPAND_ALL },
	{ KEYC_MOUSEDOWN1_PANE, MODEKEYCHOICE_CHOOSE },
	{ KEYC_MOUSEDOWN3_PANE, MODEKEYCHOICE_TREE_TOGGLE },
	{ KEYC_WHEELUP_PANE, MODEKEYCHOICE_UP },
	{ KEYC_WHEELDOWN_PANE, MODEKEYCHOICE_DOWN },

	{ KEYC_NONE, -1 }
	};
	struct mode_key_tree mode_key_tree_emacs_choice;

	/* Table mapping key table names to default settings and trees. */
	static const struct mode_key_table mode_key_tables[] = {
	{ "vi-choice", mode_key_cmdstr_choice,
	&mode_key_tree_vi_choice, mode_key_vi_choice },
	{ "emacs-choice", mode_key_cmdstr_choice,
	&mode_key_tree_emacs_choice, mode_key_emacs_choice },

	{ NULL, NULL, NULL, NULL }
	};

	RB_GENERATE(mode_key_tree, mode_key_binding, entry, mode_key_cmp);

	int
	mode_key_cmp(struct mode_key_binding mbind1, struct mode_key_binding mbind2)
	{
	if (mbind1->key < mbind2->key)
	return (-1);
	if (mbind1->key > mbind2->key)
	return (1);
	return (0);
	}

	const char *
	mode_key_tostring(const struct mode_key_cmdstr *cmdstr, enum mode_key_cmd cmd)
	{
	for (; cmdstr->name != NULL; cmdstr++) {
	if (cmdstr->cmd == cmd)
	return (cmdstr->name);
	}
	return (NULL);
	}

	enum mode_key_cmd
	mode_key_fromstring(const struct mode_key_cmdstr cmdstr, const char name)
	{
	for (; cmdstr->name != NULL; cmdstr++) {
	if (strcasecmp(cmdstr->name, name) == 0)
	return (cmdstr->cmd);
	}
	return (MODEKEY_NONE);
	}

	const struct mode_key_table *
	mode_key_findtable(const char *name)
	{
	const struct mode_key_table *mtab;

	for (mtab = mode_key_tables; mtab->name != NULL; mtab++) {
	if (strcasecmp(name, mtab->name) == 0)
	return (mtab);
	}
	return (NULL);
	}

	void
	mode_key_init_trees(void)
	{
	const struct mode_key_table *mtab;
	const struct mode_key_entry *ment;
	struct mode_key_binding *mbind;

	for (mtab = mode_key_tables; mtab->name != NULL; mtab++) {
	RB_INIT(mtab->tree);
	for (ment = mtab->table; ment->key != KEYC_NONE; ment++) {
	mbind = xmalloc(sizeof *mbind);
	mbind->key = ment->key;
	mbind->cmd = ment->cmd;
	RB_INSERT(mode_key_tree, mtab->tree, mbind);
	}
	}
	}

	void
	mode_key_init(struct mode_key_data mdata, struct mode_key_tree mtree)
	{
	mdata->tree = mtree;
	}

	enum mode_key_cmd
	mode_key_lookup(struct mode_key_data *mdata, key_code key)
	{
	struct mode_key_binding *mbind, mtmp;

	mtmp.key = key;
	if ((mbind = RB_FIND(mode_key_tree, mdata->tree, &mtmp)) == NULL)
	return (MODEKEY_OTHER);
	return (mbind->cmd);
	}