Dogcows Code - chaz/openbox/blob - openbox/menu.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    menu.c for the Openbox window manager
   4    Copyright (c) 2003        Ben Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "debug.h"
  20 #include "menu.h"
  21 #include "openbox.h"
  22 #include "stacking.h"
  23 #include "client.h"
  24 #include "config.h"
  25 #include "screen.h"
  26 #include "menuframe.h"
  27 #include "geom.h"
  28 #include "misc.h"
  29 #include "client_menu.h"
  30 #include "client_list_menu.h"
  31 #include "parser/parse.h"
  32
  33 typedef struct _ObMenuParseState ObMenuParseState;
  34
  35 struct _ObMenuParseState
  36 {
  37     ObMenu *parent;
  38     ObMenu *pipe_creator;
  39 };
  40
  41 static GHashTable *menu_hash = NULL;
  42 static ObParseInst *menu_parse_inst;
  43 static ObMenuParseState menu_parse_state;
  44
  45 static void menu_destroy_hash_value(ObMenu *self);
  46 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  47                             gpointer data);
  48 static void parse_menu_separator(ObParseInst *i,
  49                                  xmlDocPtr doc, xmlNodePtr node,
  50                                  gpointer data);
  51 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  52                        gpointer data);
  53
  54 static void client_dest(gpointer client)
  55 {
  56     /* menus can be associated with a client, so close any that are since
  57        we are disappearing now */
  58     menu_frame_hide_all_client(client);
  59 }
  60
  61 void menu_startup(gboolean reconfig)
  62 {
  63     xmlDocPtr doc;
  64     xmlNodePtr node;
  65     gboolean loaded = FALSE;
  66     GSList *it;
  67
  68     menu_hash = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  69                                       (GDestroyNotify)menu_destroy_hash_value);
  70
  71     client_list_menu_startup();
  72     client_menu_startup();
  73
  74     menu_parse_inst = parse_startup();
  75
  76     menu_parse_state.parent = NULL;
  77     menu_parse_state.pipe_creator = NULL;
  78     parse_register(menu_parse_inst, "menu", parse_menu, &menu_parse_state);
  79     parse_register(menu_parse_inst, "item", parse_menu_item,
  80                    &menu_parse_state);
  81     parse_register(menu_parse_inst, "separator",
  82                    parse_menu_separator, &menu_parse_state);
  83
  84     for (it = config_menu_files; it; it = g_slist_next(it)) {
  85         if (parse_load_menu(it->data, &doc, &node)) {
  86             loaded = TRUE;
  87             parse_tree(menu_parse_inst, doc, node->children);
  88             xmlFreeDoc(doc);
  89         }
  90     }
  91     if (!loaded) {
  92         if (parse_load_menu("menu.xml", &doc, &node)) {
  93             parse_tree(menu_parse_inst, doc, node->children);
  94             xmlFreeDoc(doc);
  95         }
  96     }
  97
  98     g_assert(menu_parse_state.parent == NULL);
  99
 100     if (!reconfig)
 101         client_add_destructor(client_dest);
 102 }
 103
 104 void menu_shutdown(gboolean reconfig)
 105 {
 106     if (!reconfig)
 107         client_remove_destructor(client_dest);
 108
 109     parse_shutdown(menu_parse_inst);
 110     menu_parse_inst = NULL;
 111
 112     menu_frame_hide_all();
 113     g_hash_table_destroy(menu_hash);
 114     menu_hash = NULL;
 115 }
 116
 117 static gboolean menu_pipe_submenu(gpointer key, gpointer val, gpointer data)
 118 {
 119     ObMenu *menu = val;
 120     return menu->pipe_creator == data;
 121 }
 122
 123 void menu_pipe_execute(ObMenu *self)
 124 {
 125     xmlDocPtr doc;
 126     xmlNodePtr node;
 127     gchar *output;
 128     GError *err = NULL;
 129
 130     if (!self->execute)
 131         return;
 132
 133     if (!g_spawn_command_line_sync(self->execute, &output, NULL, NULL, &err)) {
 134         g_warning("Failed to execute command for pipe-menu: %s", err->message);
 135         g_error_free(err);
 136         return;
 137     }
 138
 139     if (parse_load_mem(output, strlen(output),
 140                        "openbox_pipe_menu", &doc, &node))
 141     {
 142         g_hash_table_foreach_remove(menu_hash, menu_pipe_submenu, self);
 143         menu_clear_entries(self);
 144
 145         menu_parse_state.pipe_creator = self;
 146         menu_parse_state.parent = self;
 147         parse_tree(menu_parse_inst, doc, node->children);
 148         xmlFreeDoc(doc);
 149     } else {
 150         g_warning("Invalid output from pipe-menu: %s", self->execute);
 151     }
 152
 153     g_free(output);
 154 }
 155
 156 static ObMenu* menu_from_name(gchar *name)
 157 {
 158     ObMenu *self = NULL;
 159
 160     g_assert(name != NULL);
 161
 162     if (!(self = g_hash_table_lookup(menu_hash, name)))
 163         g_warning("Attempted to access menu '%s' but it does not exist.",
 164                   name);
 165     return self;
 166 }
 167
 168 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 169                             gpointer data)
 170 {
 171     ObMenuParseState *state = data;
 172     gchar *label;
 173
 174     if (state->parent) {
 175         if (parse_attr_string("label", node, &label)) {
 176             GSList *acts = NULL;
 177
 178             for (node = node->children; node; node = node->next)
 179                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 180                     ObAction *a = action_parse
 181                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 182                     if (a)
 183                         acts = g_slist_append(acts, a);
 184                 }
 185             menu_add_normal(state->parent, -1, label, acts);
 186             g_free(label);
 187         }
 188     }
 189 }
 190
 191 static void parse_menu_separator(ObParseInst *i,
 192                                  xmlDocPtr doc, xmlNodePtr node,
 193                                  gpointer data)
 194 {
 195     ObMenuParseState *state = data;
 196
 197     if (state->parent)
 198         menu_add_separator(state->parent, -1);
 199 }
 200
 201 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 202                        gpointer data)
 203 {
 204     ObMenuParseState *state = data;
 205     gchar *name = NULL, *title = NULL, *script = NULL;
 206     ObMenu *menu;
 207
 208     if (!parse_attr_string("id", node, &name))
 209         goto parse_menu_fail;
 210
 211     if (!g_hash_table_lookup(menu_hash, name)) {
 212         if (!parse_attr_string("label", node, &title))
 213             goto parse_menu_fail;
 214
 215         if ((menu = menu_new(name, title, NULL))) {
 216             menu->pipe_creator = state->pipe_creator;
 217             if (parse_attr_string("execute", node, &script)) {
 218                 menu->execute = parse_expand_tilde(script);
 219             } else {
 220                 ObMenu *old;
 221
 222                 old = state->parent;
 223                 state->parent = menu;
 224                 parse_tree(i, doc, node->children);
 225                 state->parent = old;
 226             }
 227         }
 228     }
 229
 230     if (state->parent)
 231         menu_add_submenu(state->parent, -1, name);
 232
 233 parse_menu_fail:
 234     g_free(name);
 235     g_free(title);
 236     g_free(script);
 237 }
 238
 239 ObMenu* menu_new(gchar *name, gchar *title, gpointer data)
 240 {
 241     ObMenu *self;
 242
 243     self = g_new0(ObMenu, 1);
 244     self->name = g_strdup(name);
 245     self->title = g_strdup(title);
 246     self->data = data;
 247
 248     g_hash_table_replace(menu_hash, self->name, self);
 249
 250     return self;
 251 }
 252
 253 static void menu_destroy_hash_value(ObMenu *self)
 254 {
 255     /* make sure its not visible */
 256     {
 257         GList *it;
 258         ObMenuFrame *f;
 259
 260         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 261             f = it->data;
 262             if (f->menu == self)
 263                 menu_frame_hide_all();
 264         }
 265     }
 266
 267     if (self->destroy_func)
 268         self->destroy_func(self, self->data);
 269
 270     menu_clear_entries(self);
 271     g_free(self->name);
 272     g_free(self->title);
 273     g_free(self->execute);
 274
 275     g_free(self);
 276 }
 277
 278 void menu_free(ObMenu *menu)
 279 {
 280     g_hash_table_remove(menu_hash, menu->name);
 281 }
 282
 283 void menu_show(gchar *name, gint x, gint y, ObClient *client)
 284 {
 285     ObMenu *self;
 286     ObMenuFrame *frame;
 287
 288     if (!(self = menu_from_name(name))) return;
 289
 290     menu_frame_hide_all();
 291
 292     frame = menu_frame_new(self, client);
 293     menu_frame_move(frame, x, y);
 294     menu_frame_show(frame, NULL);
 295     if (frame->entries)
 296         menu_frame_select_next(frame);
 297 }
 298
 299 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 300 {
 301     ObMenuEntry *self;
 302
 303     g_assert(menu);
 304
 305     self = g_new0(ObMenuEntry, 1);
 306     self->type = type;
 307     self->menu = menu;
 308     self->id = id;
 309
 310     switch (type) {
 311     case OB_MENU_ENTRY_TYPE_NORMAL:
 312         self->data.normal.enabled = TRUE;
 313         break;
 314     case OB_MENU_ENTRY_TYPE_SUBMENU:
 315     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 316         break;
 317     }
 318
 319     return self;
 320 }
 321
 322 void menu_entry_free(ObMenuEntry *self)
 323 {
 324     if (self) {
 325         switch (self->type) {
 326         case OB_MENU_ENTRY_TYPE_NORMAL:
 327             g_free(self->data.normal.label);
 328             while (self->data.normal.actions) {
 329                 action_unref(self->data.normal.actions->data);
 330                 self->data.normal.actions =
 331                     g_slist_delete_link(self->data.normal.actions,
 332                                         self->data.normal.actions);
 333             }
 334             break;
 335         case OB_MENU_ENTRY_TYPE_SUBMENU:
 336             g_free(self->data.submenu.name);
 337             break;
 338         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 339             break;
 340         }
 341
 342         g_free(self);
 343     }
 344 }
 345
 346 void menu_clear_entries(ObMenu *self)
 347 {
 348 #ifdef DEBUG
 349     /* assert that the menu isn't visible */
 350     {
 351         GList *it;
 352         ObMenuFrame *f;
 353
 354         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 355             f = it->data;
 356             g_assert(f->menu != self);
 357         }
 358     }
 359 #endif
 360
 361     while (self->entries) {
 362         menu_entry_free(self->entries->data);
 363         self->entries = g_list_delete_link(self->entries, self->entries);
 364     }
 365 }
 366
 367 void menu_entry_remove(ObMenuEntry *self)
 368 {
 369     self->menu->entries = g_list_remove(self->menu->entries, self);
 370     menu_entry_free(self);
 371 }
 372
 373 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, gchar *label,
 374                              GSList *actions)
 375 {
 376     ObMenuEntry *e;
 377
 378     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 379     e->data.normal.label = g_strdup(label);
 380     e->data.normal.actions = actions;
 381
 382     self->entries = g_list_append(self->entries, e);
 383     return e;
 384 }
 385
 386 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, gchar *submenu)
 387 {
 388     ObMenuEntry *e;
 389
 390     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 391     e->data.submenu.name = g_strdup(submenu);
 392
 393     self->entries = g_list_append(self->entries, e);
 394     return e;
 395 }
 396
 397 ObMenuEntry* menu_add_separator(ObMenu *self, gint id)
 398 {
 399     ObMenuEntry *e;
 400
 401     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 402
 403     self->entries = g_list_append(self->entries, e);
 404     return e;
 405 }
 406
 407 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 408 {
 409     self->update_func = func;
 410 }
 411
 412 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 413 {
 414     self->execute_func = func;
 415 }
 416
 417 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 418 {
 419     self->destroy_func = func;
 420 }
 421
 422 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 423 {
 424     ObMenuEntry *ret = NULL;
 425     GList *it;
 426
 427     for (it = self->entries; it; it = g_list_next(it)) {
 428         ObMenuEntry *e = it->data;
 429
 430         if (e->id == id) {
 431             ret = e;
 432             break;
 433         }
 434     }
 435     return ret;
 436 }
 437
 438 void menu_find_submenus(ObMenu *self)
 439 {
 440     GList *it;
 441
 442     for (it = self->entries; it; it = g_list_next(it)) {
 443         ObMenuEntry *e = it->data;
 444
 445         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 446             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 447     }
 448 }