notify.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2012 George Nachman <tmux@georgester.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20 #include <sys/queue.h>
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "tmux.h"
  26
  27 struct notify_entry {
  28         const char              *name;
  29         struct cmd_find_state    fs;
  30         struct format_tree      *formats;
  31
  32         struct client           *client;
  33         struct session          *session;
  34         struct window           *window;
  35         int                      pane;
  36 };
  37
  38 static void
  39 notify_insert_hook(struct cmdq_item *item, struct notify_entry *ne)
  40 {
  41         struct cmd_find_state            fs;
  42         struct options                  *oo;
  43         struct cmdq_item                *new_item;
  44         struct cmdq_state               *new_state;
  45         struct options_entry            *o;
  46         struct options_array_item       *a;
  47         struct cmd_list                 *cmdlist;
  48
  49         log_debug("%s: %s", __func__, ne->name);
  50
  51         cmd_find_clear_state(&fs, 0);
  52         if (cmd_find_empty_state(&ne->fs) || !cmd_find_valid_state(&ne->fs))
  53                 cmd_find_from_nothing(&fs, 0);
  54         else
  55                 cmd_find_copy_state(&fs, &ne->fs);
  56
  57         if (fs.s == NULL)
  58                 oo = global_s_options;
  59         else
  60                 oo = fs.s->options;
  61         o = options_get(oo, ne->name);
  62         if (o == NULL && fs.wp != NULL) {
  63                 oo = fs.wp->options;
  64                 o = options_get(oo, ne->name);
  65         }
  66         if (o == NULL && fs.wl != NULL) {
  67                 oo = fs.wl->window->options;
  68                 o = options_get(oo, ne->name);
  69         }
  70         if (o == NULL)
  71                 return;
  72
  73         new_state = cmdq_new_state(&fs, NULL, CMDQ_STATE_NOHOOKS);
  74         cmdq_add_formats(new_state, ne->formats);
  75
  76         a = options_array_first(o);
  77         while (a != NULL) {
  78                 cmdlist = options_array_item_value(a)->cmdlist;
  79                 if (cmdlist != NULL) {
  80                         new_item = cmdq_get_command(cmdlist, new_state);
  81                         item = cmdq_insert_after(item, new_item);
  82                 }
  83                 a = options_array_next(a);
  84         }
  85
  86         cmdq_free_state(new_state);
  87 }
  88
  89 static enum cmd_retval
  90 notify_callback(struct cmdq_item *item, void *data)
  91 {
  92         struct notify_entry     *ne = data;
  93
  94         log_debug("%s: %s", __func__, ne->name);
  95
  96         if (strcmp(ne->name, "pane-mode-changed") == 0)
  97                 control_notify_pane_mode_changed(ne->pane);
  98         if (strcmp(ne->name, "window-layout-changed") == 0)
  99                 control_notify_window_layout_changed(ne->window);
 100         if (strcmp(ne->name, "window-pane-changed") == 0)
 101                 control_notify_window_pane_changed(ne->window);
 102         if (strcmp(ne->name, "window-unlinked") == 0)
 103                 control_notify_window_unlinked(ne->session, ne->window);
 104         if (strcmp(ne->name, "window-linked") == 0)
 105                 control_notify_window_linked(ne->session, ne->window);
 106         if (strcmp(ne->name, "window-renamed") == 0)
 107                 control_notify_window_renamed(ne->window);
 108         if (strcmp(ne->name, "client-session-changed") == 0)
 109                 control_notify_client_session_changed(ne->client);
 110         if (strcmp(ne->name, "client-detached") == 0)
 111                 control_notify_client_detached(ne->client);
 112         if (strcmp(ne->name, "session-renamed") == 0)
 113                 control_notify_session_renamed(ne->session);
 114         if (strcmp(ne->name, "session-created") == 0)
 115                 control_notify_session_created(ne->session);
 116         if (strcmp(ne->name, "session-closed") == 0)
 117                 control_notify_session_closed(ne->session);
 118         if (strcmp(ne->name, "session-window-changed") == 0)
 119                 control_notify_session_window_changed(ne->session);
 120
 121         notify_insert_hook(item, ne);
 122
 123         if (ne->client != NULL)
 124                 server_client_unref(ne->client);
 125         if (ne->session != NULL)
 126                 session_remove_ref(ne->session, __func__);
 127         if (ne->window != NULL)
 128                 window_remove_ref(ne->window, __func__);
 129
 130         if (ne->fs.s != NULL)
 131                 session_remove_ref(ne->fs.s, __func__);
 132
 133         format_free(ne->formats);
 134         free((void *)ne->name);
 135         free(ne);
 136
 137         return (CMD_RETURN_NORMAL);
 138 }
 139
 140 static void
 141 notify_add(const char *name, struct cmd_find_state *fs, struct client *c,
 142     struct session *s, struct window *w, struct window_pane *wp)
 143 {
 144         struct notify_entry     *ne;
 145         struct cmdq_item        *item;
 146
 147         item = cmdq_running(NULL);
 148         if (item != NULL && (cmdq_get_flags(item) & CMDQ_STATE_NOHOOKS))
 149                 return;
 150
 151         ne = xcalloc(1, sizeof *ne);
 152         ne->name = xstrdup(name);
 153
 154         ne->client = c;
 155         ne->session = s;
 156         ne->window = w;
 157         ne->pane = (wp != NULL ? wp->id : -1);
 158
 159         ne->formats = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
 160         format_add(ne->formats, "hook", "%s", name);
 161         if (c != NULL)
 162                 format_add(ne->formats, "hook_client", "%s", c->name);
 163         if (s != NULL) {
 164                 format_add(ne->formats, "hook_session", "$%u", s->id);
 165                 format_add(ne->formats, "hook_session_name", "%s", s->name);
 166         }
 167         if (w != NULL) {
 168                 format_add(ne->formats, "hook_window", "@%u", w->id);
 169                 format_add(ne->formats, "hook_window_name", "%s", w->name);
 170         }
 171         if (wp != NULL)
 172                 format_add(ne->formats, "hook_pane", "%%%d", wp->id);
 173         format_log_debug(ne->formats, __func__);
 174
 175         if (c != NULL)
 176                 c->references++;
 177         if (s != NULL)
 178                 session_add_ref(s, __func__);
 179         if (w != NULL)
 180                 window_add_ref(w, __func__);
 181
 182         cmd_find_copy_state(&ne->fs, fs);
 183         if (ne->fs.s != NULL) /* cmd_find_valid_state needs session */
 184                 session_add_ref(ne->fs.s, __func__);
 185
 186         cmdq_append(NULL, cmdq_get_callback(notify_callback, ne));
 187 }
 188
 189 void
 190 notify_hook(struct cmdq_item *item, const char *name)
 191 {
 192         struct cmd_find_state   *target = cmdq_get_target(item);
 193         struct notify_entry      ne;
 194
 195         memset(&ne, 0, sizeof ne);
 196
 197         ne.name = name;
 198         cmd_find_copy_state(&ne.fs, target);
 199
 200         ne.client = cmdq_get_client(item);
 201         ne.session = target->s;
 202         ne.window = target->w;
 203         ne.pane = (target->wp != NULL ? target->wp->id : -1);
 204
 205         ne.formats = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
 206         format_add(ne.formats, "hook", "%s", name);
 207         format_log_debug(ne.formats, __func__);
 208
 209         notify_insert_hook(item, &ne);
 210         format_free(ne.formats);
 211 }
 212
 213 void
 214 notify_client(const char *name, struct client *c)
 215 {
 216         struct cmd_find_state   fs;
 217
 218         cmd_find_from_client(&fs, c, 0);
 219         notify_add(name, &fs, c, NULL, NULL, NULL);
 220 }
 221
 222 void
 223 notify_session(const char *name, struct session *s)
 224 {
 225         struct cmd_find_state   fs;
 226
 227         if (session_alive(s))
 228                 cmd_find_from_session(&fs, s, 0);
 229         else
 230                 cmd_find_from_nothing(&fs, 0);
 231         notify_add(name, &fs, NULL, s, NULL, NULL);
 232 }
 233
 234 void
 235 notify_winlink(const char *name, struct winlink *wl)
 236 {
 237         struct cmd_find_state   fs;
 238
 239         cmd_find_from_winlink(&fs, wl, 0);
 240         notify_add(name, &fs, NULL, wl->session, wl->window, NULL);
 241 }
 242
 243 void
 244 notify_session_window(const char *name, struct session *s, struct window *w)
 245 {
 246         struct cmd_find_state   fs;
 247
 248         cmd_find_from_session_window(&fs, s, w, 0);
 249         notify_add(name, &fs, NULL, s, w, NULL);
 250 }
 251
 252 void
 253 notify_window(const char *name, struct window *w)
 254 {
 255         struct cmd_find_state   fs;
 256
 257         cmd_find_from_window(&fs, w, 0);
 258         notify_add(name, &fs, NULL, NULL, w, NULL);
 259 }
 260
 261 void
 262 notify_pane(const char *name, struct window_pane *wp)
 263 {
 264         struct cmd_find_state   fs;
 265
 266         cmd_find_from_pane(&fs, wp, 0);
 267         notify_add(name, &fs, NULL, NULL, NULL, wp);
 268 }