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 static gunichar parse_shortcut(const gchar *label, gchar **strippedlabel,
  58                                guint *position);
  59
  60
  61 static void client_dest(ObClient *client, gpointer data)
  62 {
  63     /* menus can be associated with a client, so close any that are since
  64        we are disappearing now */
  65     menu_frame_hide_all_client(client);
  66 }
  67
  68 void menu_startup(gboolean reconfig)
  69 {
  70     xmlDocPtr doc;
  71     xmlNodePtr node;
  72     gboolean loaded = FALSE;
  73     GSList *it;
  74
  75     menu_hash = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  76                                       (GDestroyNotify)menu_destroy_hash_value);
  77
  78     client_list_menu_startup(reconfig);
  79     client_list_combined_menu_startup(reconfig);
  80     client_menu_startup();
  81
  82     menu_parse_inst = parse_startup();
  83
  84     menu_parse_state.parent = NULL;
  85     menu_parse_state.pipe_creator = NULL;
  86     parse_register(menu_parse_inst, "menu", parse_menu, &menu_parse_state);
  87     parse_register(menu_parse_inst, "item", parse_menu_item,
  88                    &menu_parse_state);
  89     parse_register(menu_parse_inst, "separator",
  90                    parse_menu_separator, &menu_parse_state);
  91
  92     for (it = config_menu_files; it; it = g_slist_next(it)) {
  93         if (parse_load_menu(it->data, &doc, &node)) {
  94             loaded = TRUE;
  95             parse_tree(menu_parse_inst, doc, node->children);
  96             xmlFreeDoc(doc);
  97         } else
  98             g_message(_("Unable to find a valid menu file '%s'"),
  99                       (const gchar*)it->data);
 100     }
 101     if (!loaded) {
 102         if (parse_load_menu("menu.xml", &doc, &node)) {
 103             parse_tree(menu_parse_inst, doc, node->children);
 104             xmlFreeDoc(doc);
 105         } else
 106             g_message(_("Unable to find a valid menu file '%s'"),
 107                       "menu.xml");
 108     }
 109
 110     g_assert(menu_parse_state.parent == NULL);
 111
 112     if (!reconfig)
 113         client_add_destructor(client_dest, NULL);
 114 }
 115
 116 void menu_shutdown(gboolean reconfig)
 117 {
 118     if (!reconfig)
 119         client_remove_destructor(client_dest);
 120
 121     parse_shutdown(menu_parse_inst);
 122     menu_parse_inst = NULL;
 123
 124     client_list_menu_shutdown(reconfig);
 125     client_list_combined_menu_shutdown(reconfig);
 126
 127     menu_frame_hide_all();
 128     g_hash_table_destroy(menu_hash);
 129     menu_hash = NULL;
 130 }
 131
 132 static gboolean menu_pipe_submenu(gpointer key, gpointer val, gpointer data)
 133 {
 134     ObMenu *menu = val;
 135     return menu->pipe_creator == data;
 136 }
 137
 138 void menu_pipe_execute(ObMenu *self)
 139 {
 140     xmlDocPtr doc;
 141     xmlNodePtr node;
 142     gchar *output;
 143     GError *err = NULL;
 144
 145     if (!self->execute)
 146         return;
 147
 148     if (!g_spawn_command_line_sync(self->execute, &output, NULL, NULL, &err)) {
 149         g_message(_("Failed to execute command for pipe-menu '%s': %s"),
 150                   self->execute, err->message);
 151         g_error_free(err);
 152         return;
 153     }
 154
 155     if (parse_load_mem(output, strlen(output),
 156                        "openbox_pipe_menu", &doc, &node))
 157     {
 158         g_hash_table_foreach_remove(menu_hash, menu_pipe_submenu, self);
 159         menu_clear_entries(self);
 160
 161         menu_parse_state.pipe_creator = self;
 162         menu_parse_state.parent = self;
 163         parse_tree(menu_parse_inst, doc, node->children);
 164         xmlFreeDoc(doc);
 165     } else {
 166         g_message(_("Invalid output from pipe-menu '%s'"), self->execute);
 167     }
 168
 169     g_free(output);
 170 }
 171
 172 static ObMenu* menu_from_name(gchar *name)
 173 {
 174     ObMenu *self = NULL;
 175
 176     g_assert(name != NULL);
 177
 178     if (!(self = g_hash_table_lookup(menu_hash, name)))
 179         g_message(_("Attempted to access menu '%s' but it does not exist"),
 180                   name);
 181     return self;
 182 }
 183
 184 #define VALID_SHORTCUT(c) (((c) >= '0' && (c) <= '9') || \
 185                            ((c) >= 'A' && (c) <= 'Z') || \
 186                            ((c) >= 'a' && (c) <= 'z'))
 187
 188 static gunichar parse_shortcut(const gchar *label, gchar **strippedlabel,
 189                                guint *position)
 190 {
 191     gunichar shortcut = 0;
 192
 193     *position = 0;
 194
 195     g_assert(strippedlabel != NULL);
 196
 197     if (label == NULL) {
 198         *strippedlabel = NULL;
 199     } else {
 200         gchar *i;
 201
 202         *strippedlabel = g_strdup(label);
 203
 204         i = strchr(*strippedlabel, '&');
 205         if (i != NULL) {
 206             /* there is an ampersand in the string */
 207
 208             /* you have to use a printable ascii character for shortcuts
 209                don't allow space either, so you can have like "a & b"
 210             */
 211             if (VALID_SHORTCUT(*(i+1))) {
 212                 shortcut = g_unichar_tolower(g_utf8_get_char(i+1));
 213                 *position = i - *strippedlabel;
 214
 215                 /* remove the & from the string */
 216                 for (; *i != '\0'; ++i)
 217                     *i = *(i+1);
 218             }
 219         } else {
 220             /* there is no ampersand, so find the first valid character to use
 221                instead */
 222
 223             for (i = *strippedlabel; *i != '\0'; ++i)
 224                 if (VALID_SHORTCUT(*i)) {
 225                     *position = i - *strippedlabel;
 226                     shortcut = g_unichar_tolower(g_utf8_get_char(i));
 227                     break;
 228                 }
 229         }
 230     }
 231     return shortcut;
 232 }
 233
 234 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 235                             gpointer data)
 236 {
 237     ObMenuParseState *state = data;
 238     gchar *label;
 239
 240     if (state->parent) {
 241         if (parse_attr_string("label", node, &label)) {
 242             GSList *acts = NULL;
 243
 244             for (node = node->children; node; node = node->next)
 245                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 246                     ObAction *a = action_parse
 247                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 248                     if (a)
 249                         acts = g_slist_append(acts, a);
 250                 }
 251             menu_add_normal(state->parent, -1, label, acts);
 252             g_free(label);
 253         }
 254     }
 255 }
 256
 257 static void parse_menu_separator(ObParseInst *i,
 258                                  xmlDocPtr doc, xmlNodePtr node,
 259                                  gpointer data)
 260 {
 261     ObMenuParseState *state = data;
 262
 263     if (state->parent) {
 264         gchar *label;
 265
 266         if (!parse_attr_string("label", node, &label))
 267             label = NULL;
 268
 269         menu_add_separator(state->parent, -1, label);
 270         g_free(label);
 271     }
 272 }
 273
 274 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 275                        gpointer data)
 276 {
 277     ObMenuParseState *state = data;
 278     gchar *name = NULL, *title = NULL, *script = NULL;
 279     ObMenu *menu;
 280
 281     if (!parse_attr_string("id", node, &name))
 282         goto parse_menu_fail;
 283
 284     if (!g_hash_table_lookup(menu_hash, name)) {
 285         if (!parse_attr_string("label", node, &title))
 286             goto parse_menu_fail;
 287
 288         if ((menu = menu_new(name, title, NULL))) {
 289             menu->pipe_creator = state->pipe_creator;
 290             if (parse_attr_string("execute", node, &script)) {
 291                 menu->execute = parse_expand_tilde(script);
 292             } else {
 293                 ObMenu *old;
 294
 295                 old = state->parent;
 296                 state->parent = menu;
 297                 parse_tree(i, doc, node->children);
 298                 state->parent = old;
 299             }
 300         }
 301     }
 302
 303     if (state->parent)
 304         menu_add_submenu(state->parent, -1, name);
 305
 306 parse_menu_fail:
 307     g_free(name);
 308     g_free(title);
 309     g_free(script);
 310 }
 311
 312 ObMenu* menu_new(const gchar *name, const gchar *title, gpointer data)
 313 {
 314     ObMenu *self;
 315
 316     self = g_new0(ObMenu, 1);
 317     self->name = g_strdup(name);
 318     self->data = data;
 319
 320     self->shortcut = parse_shortcut(title, &self->title,
 321                                     &self->shortcut_position);
 322
 323     g_hash_table_replace(menu_hash, self->name, self);
 324
 325     return self;
 326 }
 327
 328 static void menu_destroy_hash_value(ObMenu *self)
 329 {
 330     /* make sure its not visible */
 331     {
 332         GList *it;
 333         ObMenuFrame *f;
 334
 335         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 336             f = it->data;
 337             if (f->menu == self)
 338                 menu_frame_hide_all();
 339         }
 340     }
 341
 342     if (self->destroy_func)
 343         self->destroy_func(self, self->data);
 344
 345     menu_clear_entries(self);
 346     g_free(self->name);
 347     g_free(self->title);
 348     g_free(self->execute);
 349
 350     g_free(self);
 351 }
 352
 353 void menu_free(ObMenu *menu)
 354 {
 355     g_hash_table_remove(menu_hash, menu->name);
 356 }
 357
 358 void menu_show(gchar *name, gint x, gint y, ObClient *client)
 359 {
 360     ObMenu *self;
 361     ObMenuFrame *frame;
 362
 363     if (!(self = menu_from_name(name))
 364         || keyboard_interactively_grabbed()) return;
 365
 366     /* if the requested menu is already the top visible menu, then don't
 367        bother */
 368     if (menu_frame_visible) {
 369         frame = menu_frame_visible->data;
 370         if (frame->menu == self)
 371             return;
 372     }
 373
 374     menu_frame_hide_all();
 375
 376     frame = menu_frame_new(self, client);
 377     if (!menu_frame_show_topmenu(frame, x, y))
 378         menu_frame_free(frame);
 379     else if (frame->entries) {
 380         ObMenuEntryFrame *e = frame->entries->data;
 381         if (e->entry->type == OB_MENU_ENTRY_TYPE_NORMAL &&
 382             e->entry->data.normal.enabled)
 383                 menu_frame_select(frame, e, FALSE);
 384     }
 385 }
 386
 387 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 388 {
 389     ObMenuEntry *self;
 390
 391     g_assert(menu);
 392
 393     self = g_new0(ObMenuEntry, 1);
 394     self->type = type;
 395     self->menu = menu;
 396     self->id = id;
 397
 398     switch (type) {
 399     case OB_MENU_ENTRY_TYPE_NORMAL:
 400         self->data.normal.enabled = TRUE;
 401         break;
 402     case OB_MENU_ENTRY_TYPE_SUBMENU:
 403     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 404         break;
 405     }
 406
 407     return self;
 408 }
 409
 410 void menu_entry_free(ObMenuEntry *self)
 411 {
 412     if (self) {
 413         switch (self->type) {
 414         case OB_MENU_ENTRY_TYPE_NORMAL:
 415             g_free(self->data.normal.label);
 416             while (self->data.normal.actions) {
 417                 action_unref(self->data.normal.actions->data);
 418                 self->data.normal.actions =
 419                     g_slist_delete_link(self->data.normal.actions,
 420                                         self->data.normal.actions);
 421             }
 422             break;
 423         case OB_MENU_ENTRY_TYPE_SUBMENU:
 424             g_free(self->data.submenu.name);
 425             break;
 426         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 427             break;
 428         }
 429
 430         g_free(self);
 431     }
 432 }
 433
 434 void menu_clear_entries(ObMenu *self)
 435 {
 436 #ifdef DEBUG
 437     /* assert that the menu isn't visible */
 438     {
 439         GList *it;
 440         ObMenuFrame *f;
 441
 442         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 443             f = it->data;
 444             g_assert(f->menu != self);
 445         }
 446     }
 447 #endif
 448
 449     while (self->entries) {
 450         menu_entry_free(self->entries->data);
 451         self->entries = g_list_delete_link(self->entries, self->entries);
 452     }
 453 }
 454
 455 void menu_entry_remove(ObMenuEntry *self)
 456 {
 457     self->menu->entries = g_list_remove(self->menu->entries, self);
 458     menu_entry_free(self);
 459 }
 460
 461 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, const gchar *label,
 462                              GSList *actions)
 463 {
 464     ObMenuEntry *e;
 465
 466     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 467     e->data.normal.actions = actions;
 468
 469     menu_entry_set_label(e, label);
 470
 471     self->entries = g_list_append(self->entries, e);
 472     return e;
 473 }
 474
 475 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, const gchar *submenu)
 476 {
 477     ObMenuEntry *e;
 478
 479     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 480     e->data.submenu.name = g_strdup(submenu);
 481
 482     self->entries = g_list_append(self->entries, e);
 483     return e;
 484 }
 485
 486 ObMenuEntry* menu_add_separator(ObMenu *self, gint id, const gchar *label)
 487 {
 488     ObMenuEntry *e;
 489
 490     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 491
 492     menu_entry_set_label(e, label);
 493
 494     self->entries = g_list_append(self->entries, e);
 495     return e;
 496 }
 497
 498 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 499 {
 500     self->update_func = func;
 501 }
 502
 503 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 504 {
 505     self->execute_func = func;
 506 }
 507
 508 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 509 {
 510     self->destroy_func = func;
 511 }
 512
 513 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 514 {
 515     ObMenuEntry *ret = NULL;
 516     GList *it;
 517
 518     for (it = self->entries; it; it = g_list_next(it)) {
 519         ObMenuEntry *e = it->data;
 520
 521         if (e->id == id) {
 522             ret = e;
 523             break;
 524         }
 525     }
 526     return ret;
 527 }
 528
 529 void menu_find_submenus(ObMenu *self)
 530 {
 531     GList *it;
 532
 533     for (it = self->entries; it; it = g_list_next(it)) {
 534         ObMenuEntry *e = it->data;
 535
 536         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 537             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 538     }
 539 }
 540
 541 void menu_entry_set_label(ObMenuEntry *self, const gchar *label)
 542 {
 543     switch (self->type) {
 544     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 545         g_free(self->data.separator.label);
 546         self->data.separator.label = g_strdup(label);
 547         break;
 548     case OB_MENU_ENTRY_TYPE_NORMAL:
 549         g_free(self->data.normal.label);
 550         self->data.normal.shortcut =
 551             parse_shortcut(label, &self->data.normal.label,
 552                            &self->data.normal.shortcut_position);
 553         break;
 554     default:
 555         g_assert_not_reached();
 556     }
 557 }
 558
 559 void menu_show_all_shortcuts(ObMenu *self, gboolean show)
 560 {
 561     self->show_all_shortcuts = show;
 562 }