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) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "debug.h"
  21 #include "menu.h"
  22 #include "openbox.h"
  23 #include "stacking.h"
  24 #include "client.h"
  25 #include "config.h"
  26 #include "screen.h"
  27 #include "menuframe.h"
  28 #include "keyboard.h"
  29 #include "geom.h"
  30 #include "misc.h"
  31 #include "client_menu.h"
  32 #include "client_list_menu.h"
  33 #include "client_list_combined_menu.h"
  34 #include "gettext.h"
  35 #include "parser/parse.h"
  36
  37 typedef struct _ObMenuParseState ObMenuParseState;
  38
  39 struct _ObMenuParseState
  40 {
  41     ObMenu *parent;
  42     ObMenu *pipe_creator;
  43 };
  44
  45 static GHashTable *menu_hash = NULL;
  46 static ObParseInst *menu_parse_inst;
  47 static ObMenuParseState menu_parse_state;
  48
  49 static void menu_destroy_hash_value(ObMenu *self);
  50 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  51                             gpointer data);
  52 static void parse_menu_separator(ObParseInst *i,
  53                                  xmlDocPtr doc, xmlNodePtr node,
  54                                  gpointer data);
  55 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  56                        gpointer data);
  57
  58 static void client_dest(ObClient *client, gpointer data)
  59 {
  60     /* menus can be associated with a client, so close any that are since
  61        we are disappearing now */
  62     menu_frame_hide_all_client(client);
  63 }
  64
  65 void menu_startup(gboolean reconfig)
  66 {
  67     xmlDocPtr doc;
  68     xmlNodePtr node;
  69     gboolean loaded = FALSE;
  70     GSList *it;
  71
  72     menu_hash = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  73                                       (GDestroyNotify)menu_destroy_hash_value);
  74
  75     client_list_menu_startup(reconfig);
  76     client_list_combined_menu_startup(reconfig);
  77     client_menu_startup();
  78
  79     menu_parse_inst = parse_startup();
  80
  81     menu_parse_state.parent = NULL;
  82     menu_parse_state.pipe_creator = NULL;
  83     parse_register(menu_parse_inst, "menu", parse_menu, &menu_parse_state);
  84     parse_register(menu_parse_inst, "item", parse_menu_item,
  85                    &menu_parse_state);
  86     parse_register(menu_parse_inst, "separator",
  87                    parse_menu_separator, &menu_parse_state);
  88
  89     for (it = config_menu_files; it; it = g_slist_next(it)) {
  90         if (parse_load_menu(it->data, &doc, &node)) {
  91             loaded = TRUE;
  92             parse_tree(menu_parse_inst, doc, node->children);
  93             xmlFreeDoc(doc);
  94         } else
  95             g_message(_("Unable to find a valid menu file '%s'"),
  96                       (const gchar*)it->data);
  97     }
  98     if (!loaded) {
  99         if (parse_load_menu("menu.xml", &doc, &node)) {
 100             parse_tree(menu_parse_inst, doc, node->children);
 101             xmlFreeDoc(doc);
 102         } else
 103             g_message(_("Unable to find a valid menu file '%s'"),
 104                       "menu.xml");
 105     }
 106
 107     g_assert(menu_parse_state.parent == NULL);
 108
 109     if (!reconfig)
 110         client_add_destructor(client_dest, NULL);
 111 }
 112
 113 void menu_shutdown(gboolean reconfig)
 114 {
 115     if (!reconfig)
 116         client_remove_destructor(client_dest);
 117
 118     parse_shutdown(menu_parse_inst);
 119     menu_parse_inst = NULL;
 120
 121     client_list_menu_shutdown(reconfig);
 122     client_list_combined_menu_shutdown(reconfig);
 123
 124     menu_frame_hide_all();
 125     g_hash_table_destroy(menu_hash);
 126     menu_hash = NULL;
 127 }
 128
 129 static gboolean menu_pipe_submenu(gpointer key, gpointer val, gpointer data)
 130 {
 131     ObMenu *menu = val;
 132     return menu->pipe_creator == data;
 133 }
 134
 135 void menu_pipe_execute(ObMenu *self)
 136 {
 137     xmlDocPtr doc;
 138     xmlNodePtr node;
 139     gchar *output;
 140     GError *err = NULL;
 141
 142     if (!self->execute)
 143         return;
 144
 145     if (!g_spawn_command_line_sync(self->execute, &output, NULL, NULL, &err)) {
 146         g_message(_("Failed to execute command for pipe-menu '%s': %s"),
 147                   self->execute, err->message);
 148         g_error_free(err);
 149         return;
 150     }
 151
 152     if (parse_load_mem(output, strlen(output),
 153                        "openbox_pipe_menu", &doc, &node))
 154     {
 155         g_hash_table_foreach_remove(menu_hash, menu_pipe_submenu, self);
 156         menu_clear_entries(self);
 157
 158         menu_parse_state.pipe_creator = self;
 159         menu_parse_state.parent = self;
 160         parse_tree(menu_parse_inst, doc, node->children);
 161         xmlFreeDoc(doc);
 162     } else {
 163         g_message(_("Invalid output from pipe-menu '%s'"), self->execute);
 164     }
 165
 166     g_free(output);
 167 }
 168
 169 static ObMenu* menu_from_name(gchar *name)
 170 {
 171     ObMenu *self = NULL;
 172
 173     g_assert(name != NULL);
 174
 175     if (!(self = g_hash_table_lookup(menu_hash, name)))
 176         g_message(_("Attempted to access menu '%s' but it does not exist"),
 177                   name);
 178     return self;
 179 }
 180
 181 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 182                             gpointer data)
 183 {
 184     ObMenuParseState *state = data;
 185     gchar *label;
 186
 187     if (state->parent) {
 188         if (parse_attr_string("label", node, &label)) {
 189             GSList *acts = NULL;
 190
 191             for (node = node->children; node; node = node->next)
 192                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 193                     ObAction *a = action_parse
 194                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 195                     if (a)
 196                         acts = g_slist_append(acts, a);
 197                 }
 198             menu_add_normal(state->parent, -1, label, acts);
 199             g_free(label);
 200         }
 201     }
 202 }
 203
 204 static void parse_menu_separator(ObParseInst *i,
 205                                  xmlDocPtr doc, xmlNodePtr node,
 206                                  gpointer data)
 207 {
 208     ObMenuParseState *state = data;
 209
 210     if (state->parent) {
 211         gchar *label;
 212
 213         if (!parse_attr_string("label", node, &label))
 214             label = NULL;
 215
 216         menu_add_separator(state->parent, -1, label);
 217         g_free(label);
 218     }
 219 }
 220
 221 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 222                        gpointer data)
 223 {
 224     ObMenuParseState *state = data;
 225     gchar *name = NULL, *title = NULL, *script = NULL;
 226     ObMenu *menu;
 227
 228     if (!parse_attr_string("id", node, &name))
 229         goto parse_menu_fail;
 230
 231     if (!g_hash_table_lookup(menu_hash, name)) {
 232         if (!parse_attr_string("label", node, &title))
 233             goto parse_menu_fail;
 234
 235         if ((menu = menu_new(name, title, NULL))) {
 236             menu->pipe_creator = state->pipe_creator;
 237             if (parse_attr_string("execute", node, &script)) {
 238                 menu->execute = parse_expand_tilde(script);
 239             } else {
 240                 ObMenu *old;
 241
 242                 old = state->parent;
 243                 state->parent = menu;
 244                 parse_tree(i, doc, node->children);
 245                 state->parent = old;
 246             }
 247         }
 248     }
 249
 250     if (state->parent)
 251         menu_add_submenu(state->parent, -1, name);
 252
 253 parse_menu_fail:
 254     g_free(name);
 255     g_free(title);
 256     g_free(script);
 257 }
 258
 259 ObMenu* menu_new(const gchar *name, const gchar *title, gpointer data)
 260 {
 261     ObMenu *self;
 262
 263     self = g_new0(ObMenu, 1);
 264     self->name = g_strdup(name);
 265     self->title = g_strdup(title);
 266     self->data = data;
 267
 268     g_hash_table_replace(menu_hash, self->name, self);
 269
 270     return self;
 271 }
 272
 273 static void menu_destroy_hash_value(ObMenu *self)
 274 {
 275     /* make sure its not visible */
 276     {
 277         GList *it;
 278         ObMenuFrame *f;
 279
 280         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 281             f = it->data;
 282             if (f->menu == self)
 283                 menu_frame_hide_all();
 284         }
 285     }
 286
 287     if (self->destroy_func)
 288         self->destroy_func(self, self->data);
 289
 290     menu_clear_entries(self);
 291     g_free(self->name);
 292     g_free(self->title);
 293     g_free(self->execute);
 294
 295     g_free(self);
 296 }
 297
 298 void menu_free(ObMenu *menu)
 299 {
 300     g_hash_table_remove(menu_hash, menu->name);
 301 }
 302
 303 void menu_show(gchar *name, gint x, gint y, ObClient *client)
 304 {
 305     ObMenu *self;
 306     ObMenuFrame *frame;
 307
 308     if (!(self = menu_from_name(name))
 309         || keyboard_interactively_grabbed()) return;
 310
 311     /* if the requested menu is already the top visible menu, then don't
 312        bother */
 313     if (menu_frame_visible) {
 314         frame = menu_frame_visible->data;
 315         if (frame->menu == self)
 316             return;
 317     }
 318
 319     menu_frame_hide_all();
 320
 321     frame = menu_frame_new(self, client);
 322     if (!menu_frame_show_topmenu(frame, x, y))
 323         menu_frame_free(frame);
 324     else if (frame->entries) {
 325         ObMenuEntryFrame *e = frame->entries->data;
 326         if (e->entry->type == OB_MENU_ENTRY_TYPE_NORMAL &&
 327             e->entry->data.normal.enabled)
 328                 menu_frame_select(frame, e);
 329     }
 330 }
 331
 332 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 333 {
 334     ObMenuEntry *self;
 335
 336     g_assert(menu);
 337
 338     self = g_new0(ObMenuEntry, 1);
 339     self->type = type;
 340     self->menu = menu;
 341     self->id = id;
 342
 343     switch (type) {
 344     case OB_MENU_ENTRY_TYPE_NORMAL:
 345         self->data.normal.enabled = TRUE;
 346         break;
 347     case OB_MENU_ENTRY_TYPE_SUBMENU:
 348     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 349         break;
 350     }
 351
 352     return self;
 353 }
 354
 355 void menu_entry_free(ObMenuEntry *self)
 356 {
 357     if (self) {
 358         switch (self->type) {
 359         case OB_MENU_ENTRY_TYPE_NORMAL:
 360             g_free(self->data.normal.label);
 361             while (self->data.normal.actions) {
 362                 action_unref(self->data.normal.actions->data);
 363                 self->data.normal.actions =
 364                     g_slist_delete_link(self->data.normal.actions,
 365                                         self->data.normal.actions);
 366             }
 367             break;
 368         case OB_MENU_ENTRY_TYPE_SUBMENU:
 369             g_free(self->data.submenu.name);
 370             break;
 371         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 372             break;
 373         }
 374
 375         g_free(self);
 376     }
 377 }
 378
 379 void menu_clear_entries(ObMenu *self)
 380 {
 381 #ifdef DEBUG
 382     /* assert that the menu isn't visible */
 383     {
 384         GList *it;
 385         ObMenuFrame *f;
 386
 387         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 388             f = it->data;
 389             g_assert(f->menu != self);
 390         }
 391     }
 392 #endif
 393
 394     while (self->entries) {
 395         menu_entry_free(self->entries->data);
 396         self->entries = g_list_delete_link(self->entries, self->entries);
 397     }
 398 }
 399
 400 void menu_entry_remove(ObMenuEntry *self)
 401 {
 402     self->menu->entries = g_list_remove(self->menu->entries, self);
 403     menu_entry_free(self);
 404 }
 405
 406 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, const gchar *label,
 407                              GSList *actions)
 408 {
 409     ObMenuEntry *e;
 410
 411     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 412     e->data.normal.label = g_strdup(label);
 413     e->data.normal.actions = actions;
 414
 415     self->entries = g_list_append(self->entries, e);
 416     return e;
 417 }
 418
 419 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, const gchar *submenu)
 420 {
 421     ObMenuEntry *e;
 422
 423     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 424     e->data.submenu.name = g_strdup(submenu);
 425
 426     self->entries = g_list_append(self->entries, e);
 427     return e;
 428 }
 429
 430 ObMenuEntry* menu_add_separator(ObMenu *self, gint id, const gchar *label)
 431 {
 432     ObMenuEntry *e;
 433
 434     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 435     e->data.separator.label = g_strdup(label);
 436
 437     self->entries = g_list_append(self->entries, e);
 438     return e;
 439 }
 440
 441 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 442 {
 443     self->update_func = func;
 444 }
 445
 446 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 447 {
 448     self->execute_func = func;
 449 }
 450
 451 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 452 {
 453     self->destroy_func = func;
 454 }
 455
 456 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 457 {
 458     ObMenuEntry *ret = NULL;
 459     GList *it;
 460
 461     for (it = self->entries; it; it = g_list_next(it)) {
 462         ObMenuEntry *e = it->data;
 463
 464         if (e->id == id) {
 465             ret = e;
 466             break;
 467         }
 468     }
 469     return ret;
 470 }
 471
 472 void menu_find_submenus(ObMenu *self)
 473 {
 474     GList *it;
 475
 476     for (it = self->entries; it; it = g_list_next(it)) {
 477         ObMenuEntry *e = it->data;
 478
 479         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 480             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 481     }
 482 }