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 "mainloop.h"
  24 #include "stacking.h"
  25 #include "client.h"
  26 #include "config.h"
  27 #include "screen.h"
  28 #include "menuframe.h"
  29 #include "keyboard.h"
  30 #include "geom.h"
  31 #include "misc.h"
  32 #include "client_menu.h"
  33 #include "client_list_menu.h"
  34 #include "client_list_combined_menu.h"
  35 #include "gettext.h"
  36 #include "parser/parse.h"
  37
  38 typedef struct _ObMenuParseState ObMenuParseState;
  39
  40 struct _ObMenuParseState
  41 {
  42     ObMenu *parent;
  43     ObMenu *pipe_creator;
  44 };
  45
  46 static GHashTable *menu_hash = NULL;
  47 static ObParseInst *menu_parse_inst;
  48 static ObMenuParseState menu_parse_state;
  49 static gboolean menu_can_hide = FALSE;
  50
  51 static void menu_destroy_hash_value(ObMenu *self);
  52 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  53                             gpointer data);
  54 static void parse_menu_separator(ObParseInst *i,
  55                                  xmlDocPtr doc, xmlNodePtr node,
  56                                  gpointer data);
  57 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  58                        gpointer data);
  59 static gunichar parse_shortcut(const gchar *label, gboolean allow_shortcut,
  60                                gchar **strippedlabel, guint *position);
  61
  62
  63 static void client_dest(ObClient *client, gpointer data)
  64 {
  65     /* menus can be associated with a client, so close any that are since
  66        we are disappearing now */
  67     menu_frame_hide_all_client(client);
  68 }
  69
  70 void menu_startup(gboolean reconfig)
  71 {
  72     xmlDocPtr doc;
  73     xmlNodePtr node;
  74     gboolean loaded = FALSE;
  75     GSList *it;
  76
  77     menu_hash = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  78                                       (GDestroyNotify)menu_destroy_hash_value);
  79
  80     client_list_menu_startup(reconfig);
  81     client_list_combined_menu_startup(reconfig);
  82     client_menu_startup();
  83
  84     menu_parse_inst = parse_startup();
  85
  86     menu_parse_state.parent = NULL;
  87     menu_parse_state.pipe_creator = NULL;
  88     parse_register(menu_parse_inst, "menu", parse_menu, &menu_parse_state);
  89     parse_register(menu_parse_inst, "item", parse_menu_item,
  90                    &menu_parse_state);
  91     parse_register(menu_parse_inst, "separator",
  92                    parse_menu_separator, &menu_parse_state);
  93
  94     for (it = config_menu_files; it; it = g_slist_next(it)) {
  95         if (parse_load_menu(it->data, &doc, &node)) {
  96             loaded = TRUE;
  97             parse_tree(menu_parse_inst, doc, node->children);
  98             xmlFreeDoc(doc);
  99         } else
 100             g_message(_("Unable to find a valid menu file '%s'"),
 101                       (const gchar*)it->data);
 102     }
 103     if (!loaded) {
 104         if (parse_load_menu("menu.xml", &doc, &node)) {
 105             parse_tree(menu_parse_inst, doc, node->children);
 106             xmlFreeDoc(doc);
 107         } else
 108             g_message(_("Unable to find a valid menu file '%s'"),
 109                       "menu.xml");
 110     }
 111
 112     g_assert(menu_parse_state.parent == NULL);
 113
 114     if (!reconfig)
 115         client_add_destroy_notify(client_dest, NULL);
 116 }
 117
 118 void menu_shutdown(gboolean reconfig)
 119 {
 120     if (!reconfig)
 121         client_remove_destroy_notify(client_dest);
 122
 123     parse_shutdown(menu_parse_inst);
 124     menu_parse_inst = NULL;
 125
 126     client_list_menu_shutdown(reconfig);
 127     client_list_combined_menu_shutdown(reconfig);
 128
 129     menu_frame_hide_all();
 130     g_hash_table_destroy(menu_hash);
 131     menu_hash = NULL;
 132 }
 133
 134 static gboolean menu_pipe_submenu(gpointer key, gpointer val, gpointer data)
 135 {
 136     ObMenu *menu = val;
 137     return menu->pipe_creator == data;
 138 }
 139
 140 void menu_pipe_execute(ObMenu *self)
 141 {
 142     xmlDocPtr doc;
 143     xmlNodePtr node;
 144     gchar *output;
 145     GError *err = NULL;
 146
 147     if (!self->execute)
 148         return;
 149
 150     if (!g_spawn_command_line_sync(self->execute, &output, NULL, NULL, &err)) {
 151         g_message(_("Failed to execute command for pipe-menu '%s': %s"),
 152                   self->execute, err->message);
 153         g_error_free(err);
 154         return;
 155     }
 156
 157     if (parse_load_mem(output, strlen(output),
 158                        "openbox_pipe_menu", &doc, &node))
 159     {
 160         g_hash_table_foreach_remove(menu_hash, menu_pipe_submenu, self);
 161         menu_clear_entries(self);
 162
 163         menu_parse_state.pipe_creator = self;
 164         menu_parse_state.parent = self;
 165         parse_tree(menu_parse_inst, doc, node->children);
 166         xmlFreeDoc(doc);
 167     } else {
 168         g_message(_("Invalid output from pipe-menu '%s'"), self->execute);
 169     }
 170
 171     g_free(output);
 172 }
 173
 174 static ObMenu* menu_from_name(gchar *name)
 175 {
 176     ObMenu *self = NULL;
 177
 178     g_assert(name != NULL);
 179
 180     if (!(self = g_hash_table_lookup(menu_hash, name)))
 181         g_message(_("Attempted to access menu '%s' but it does not exist"),
 182                   name);
 183     return self;
 184 }
 185
 186 #define VALID_SHORTCUT(c) (((c) >= '0' && (c) <= '9') || \
 187                            ((c) >= 'A' && (c) <= 'Z') || \
 188                            ((c) >= 'a' && (c) <= 'z'))
 189
 190 static gunichar parse_shortcut(const gchar *label, gboolean allow_shortcut,
 191                                gchar **strippedlabel, guint *position)
 192 {
 193     gunichar shortcut = 0;
 194
 195     *position = 0;
 196
 197     g_assert(strippedlabel != NULL);
 198
 199     if (label == NULL) {
 200         *strippedlabel = NULL;
 201     } else {
 202         gchar *i;
 203
 204         *strippedlabel = g_strdup(label);
 205
 206         /* if allow_shortcut is false, then you can't use the &, instead you
 207            have to just use the first valid character
 208         */
 209
 210         i = strchr(*strippedlabel, '&');
 211         if (allow_shortcut && i != NULL) {
 212             /* there is an ampersand in the string */
 213
 214             /* you have to use a printable ascii character for shortcuts
 215                don't allow space either, so you can have like "a & b"
 216             */
 217             if (VALID_SHORTCUT(*(i+1))) {
 218                 shortcut = g_unichar_tolower(g_utf8_get_char(i+1));
 219                 *position = i - *strippedlabel;
 220
 221                 /* remove the & from the string */
 222                 for (; *i != '\0'; ++i)
 223                     *i = *(i+1);
 224             }
 225         } else {
 226             /* there is no ampersand, so find the first valid character to use
 227                instead */
 228
 229             for (i = *strippedlabel; *i != '\0'; ++i)
 230                 if (VALID_SHORTCUT(*i)) {
 231                     *position = i - *strippedlabel;
 232                     shortcut = g_unichar_tolower(g_utf8_get_char(i));
 233                     break;
 234                 }
 235         }
 236     }
 237     return shortcut;
 238 }
 239
 240 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 241                             gpointer data)
 242 {
 243     ObMenuParseState *state = data;
 244     gchar *label;
 245
 246     if (state->parent) {
 247         if (parse_attr_string("label", node, &label)) {
 248             GSList *acts = NULL;
 249
 250             for (node = node->children; node; node = node->next)
 251                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 252                     ObAction *a = action_parse
 253                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 254                     if (a)
 255                         acts = g_slist_append(acts, a);
 256                 }
 257             menu_add_normal(state->parent, -1, label, acts, FALSE);
 258             g_free(label);
 259         }
 260     }
 261 }
 262
 263 static void parse_menu_separator(ObParseInst *i,
 264                                  xmlDocPtr doc, xmlNodePtr node,
 265                                  gpointer data)
 266 {
 267     ObMenuParseState *state = data;
 268
 269     if (state->parent) {
 270         gchar *label;
 271
 272         if (!parse_attr_string("label", node, &label))
 273             label = NULL;
 274
 275         menu_add_separator(state->parent, -1, label);
 276         g_free(label);
 277     }
 278 }
 279
 280 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 281                        gpointer data)
 282 {
 283     ObMenuParseState *state = data;
 284     gchar *name = NULL, *title = NULL, *script = NULL;
 285     ObMenu *menu;
 286
 287     if (!parse_attr_string("id", node, &name))
 288         goto parse_menu_fail;
 289
 290     if (!g_hash_table_lookup(menu_hash, name)) {
 291         if (!parse_attr_string("label", node, &title))
 292             goto parse_menu_fail;
 293
 294         if ((menu = menu_new(name, title, FALSE, NULL))) {
 295             menu->pipe_creator = state->pipe_creator;
 296             if (parse_attr_string("execute", node, &script)) {
 297                 menu->execute = parse_expand_tilde(script);
 298             } else {
 299                 ObMenu *old;
 300
 301                 old = state->parent;
 302                 state->parent = menu;
 303                 parse_tree(i, doc, node->children);
 304                 state->parent = old;
 305             }
 306         }
 307     }
 308
 309     if (state->parent)
 310         menu_add_submenu(state->parent, -1, name);
 311
 312 parse_menu_fail:
 313     g_free(name);
 314     g_free(title);
 315     g_free(script);
 316 }
 317
 318 ObMenu* menu_new(const gchar *name, const gchar *title,
 319                  gboolean allow_shortcut_selection, gpointer data)
 320 {
 321     ObMenu *self;
 322
 323     self = g_new0(ObMenu, 1);
 324     self->name = g_strdup(name);
 325     self->data = data;
 326
 327     self->shortcut = parse_shortcut(title, allow_shortcut_selection,
 328                                     &self->title, &self->shortcut_position);
 329
 330     g_hash_table_replace(menu_hash, self->name, self);
 331
 332     /* Each menu has a single more_menu.  When the menu spills past what
 333        can fit on the screen, a new menu frame entry is created from this
 334        more_menu, and a new menu frame for the submenu is created for this
 335        menu, also pointing to the more_menu.
 336
 337        This can be done multiple times using the same more_menu.
 338
 339        more_menu->more_menu will always be NULL, since there is only 1 for
 340        each menu. */
 341     self->more_menu = g_new0(ObMenu, 1);
 342     self->more_menu->name = _("More...");
 343     self->more_menu->title = _("More...");
 344     self->more_menu->data = data;
 345     self->more_menu->shortcut = g_unichar_tolower(g_utf8_get_char("M"));
 346
 347     self->more_menu->show_func = self->show_func;
 348     self->more_menu->hide_func = self->hide_func;
 349     self->more_menu->update_func = self->update_func;
 350     self->more_menu->execute_func = self->execute_func;
 351     self->more_menu->destroy_func = self->destroy_func;
 352     self->more_menu->place_func = self->place_func;
 353
 354     return self;
 355 }
 356
 357 static void menu_destroy_hash_value(ObMenu *self)
 358 {
 359     /* make sure its not visible */
 360     {
 361         GList *it;
 362         ObMenuFrame *f;
 363
 364         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 365             f = it->data;
 366             if (f->menu == self)
 367                 menu_frame_hide_all();
 368         }
 369     }
 370
 371     if (self->destroy_func)
 372         self->destroy_func(self, self->data);
 373
 374     menu_clear_entries(self);
 375     g_free(self->name);
 376     g_free(self->title);
 377     g_free(self->execute);
 378     g_free(self->more_menu);
 379
 380     g_free(self);
 381 }
 382
 383 void menu_free(ObMenu *menu)
 384 {
 385     if (menu)
 386         g_hash_table_remove(menu_hash, menu->name);
 387 }
 388
 389 static gboolean menu_hide_delay_func(gpointer data)
 390 {
 391     menu_can_hide = TRUE;
 392     return FALSE; /* no repeat */
 393 }
 394
 395 void menu_show(gchar *name, gint x, gint y, gint button, ObClient *client)
 396 {
 397     ObMenu *self;
 398     ObMenuFrame *frame;
 399
 400     if (!(self = menu_from_name(name))
 401         || keyboard_interactively_grabbed()) return;
 402
 403     /* if the requested menu is already the top visible menu, then don't
 404        bother */
 405     if (menu_frame_visible) {
 406         frame = menu_frame_visible->data;
 407         if (frame->menu == self)
 408             return;
 409     }
 410
 411     menu_frame_hide_all();
 412
 413     frame = menu_frame_new(self, 0, client);
 414     if (!menu_frame_show_topmenu(frame, x, y, button))
 415         menu_frame_free(frame);
 416     else if (!button) {
 417         /* select the first entry if it's not a submenu and we opened
 418          * the menu with the keyboard, and skip all headers */
 419         GList *it = frame->entries;
 420         while (it) {
 421             ObMenuEntryFrame *e = it->data;
 422             if (e->entry->type == OB_MENU_ENTRY_TYPE_NORMAL) {
 423                 menu_frame_select(frame, e, FALSE);
 424                 break;
 425             } else if (e->entry->type == OB_MENU_ENTRY_TYPE_SEPARATOR)
 426                 it = g_list_next(it);
 427             else
 428                 break;
 429         }
 430     }
 431
 432     if (!button)
 433         menu_can_hide = TRUE;
 434     else {
 435         menu_can_hide = FALSE;
 436         ob_main_loop_timeout_add(ob_main_loop,
 437                                  config_menu_hide_delay * 1000,
 438                                  menu_hide_delay_func,
 439                                  NULL, g_direct_equal, NULL);
 440     }
 441 }
 442
 443 gboolean menu_hide_delay_reached()
 444 {
 445     return menu_can_hide;
 446 }
 447
 448 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 449 {
 450     ObMenuEntry *self;
 451
 452     g_assert(menu);
 453
 454     self = g_new0(ObMenuEntry, 1);
 455     self->ref = 1;
 456     self->type = type;
 457     self->menu = menu;
 458     self->id = id;
 459
 460     switch (type) {
 461     case OB_MENU_ENTRY_TYPE_NORMAL:
 462         self->data.normal.enabled = TRUE;
 463         break;
 464     case OB_MENU_ENTRY_TYPE_SUBMENU:
 465     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 466         break;
 467     }
 468
 469     return self;
 470 }
 471
 472 void menu_entry_ref(ObMenuEntry *self)
 473 {
 474     ++self->ref;
 475 }
 476
 477 void menu_entry_unref(ObMenuEntry *self)
 478 {
 479     if (self && --self->ref == 0) {
 480         switch (self->type) {
 481         case OB_MENU_ENTRY_TYPE_NORMAL:
 482             g_free(self->data.normal.label);
 483             while (self->data.normal.actions) {
 484                 action_unref(self->data.normal.actions->data);
 485                 self->data.normal.actions =
 486                     g_slist_delete_link(self->data.normal.actions,
 487                                         self->data.normal.actions);
 488             }
 489             break;
 490         case OB_MENU_ENTRY_TYPE_SUBMENU:
 491             g_free(self->data.submenu.name);
 492             break;
 493         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 494             break;
 495         }
 496
 497         g_free(self);
 498     }
 499 }
 500
 501 void menu_clear_entries(ObMenu *self)
 502 {
 503 #ifdef DEBUG
 504     /* assert that the menu isn't visible */
 505     {
 506         GList *it;
 507         ObMenuFrame *f;
 508
 509         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 510             f = it->data;
 511             g_assert(f->menu != self);
 512         }
 513     }
 514 #endif
 515
 516     while (self->entries) {
 517         menu_entry_unref(self->entries->data);
 518         self->entries = g_list_delete_link(self->entries, self->entries);
 519     }
 520     self->more_menu->entries = self->entries; /* keep it in sync */
 521 }
 522
 523 void menu_entry_remove(ObMenuEntry *self)
 524 {
 525     self->menu->entries = g_list_remove(self->menu->entries, self);
 526     menu_entry_unref(self);
 527 }
 528
 529 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, const gchar *label,
 530                              GSList *actions, gboolean allow_shortcut)
 531 {
 532     ObMenuEntry *e;
 533
 534     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 535     e->data.normal.actions = actions;
 536
 537     menu_entry_set_label(e, label, allow_shortcut);
 538
 539     self->entries = g_list_append(self->entries, e);
 540     self->more_menu->entries = self->entries; /* keep it in sync */
 541     return e;
 542 }
 543
 544 ObMenuEntry* menu_get_more(ObMenu *self, guint show_from)
 545 {
 546     ObMenuEntry *e;
 547     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, -1);
 548     /* points to itself */
 549     e->data.submenu.name = g_strdup(self->name);
 550     e->data.submenu.submenu = self;
 551     e->data.submenu.show_from = show_from;
 552     return e;
 553 }
 554
 555 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, const gchar *submenu)
 556 {
 557     ObMenuEntry *e;
 558
 559     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 560     e->data.submenu.name = g_strdup(submenu);
 561
 562     self->entries = g_list_append(self->entries, e);
 563     self->more_menu->entries = self->entries; /* keep it in sync */
 564     return e;
 565 }
 566
 567 ObMenuEntry* menu_add_separator(ObMenu *self, gint id, const gchar *label)
 568 {
 569     ObMenuEntry *e;
 570
 571     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 572
 573     menu_entry_set_label(e, label, FALSE);
 574
 575     self->entries = g_list_append(self->entries, e);
 576     self->more_menu->entries = self->entries; /* keep it in sync */
 577     return e;
 578 }
 579
 580 void menu_set_show_func(ObMenu *self, ObMenuShowFunc func)
 581 {
 582     self->show_func = func;
 583     self->more_menu->show_func = func; /* keep it in sync */
 584 }
 585
 586 void menu_set_hide_func(ObMenu *self, ObMenuHideFunc func)
 587 {
 588     self->hide_func = func;
 589     self->more_menu->hide_func = func; /* keep it in sync */
 590 }
 591
 592 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 593 {
 594     self->update_func = func;
 595     self->more_menu->update_func = func; /* keep it in sync */
 596 }
 597
 598 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 599 {
 600     self->execute_func = func;
 601     self->more_menu->execute_func = func; /* keep it in sync */
 602 }
 603
 604 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 605 {
 606     self->destroy_func = func;
 607     self->more_menu->destroy_func = func; /* keep it in sync */
 608 }
 609
 610 void menu_set_place_func(ObMenu *self, ObMenuPlaceFunc func)
 611 {
 612     self->place_func = func;
 613     self->more_menu->place_func = func; /* keep it in sync */
 614 }
 615
 616 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 617 {
 618     ObMenuEntry *ret = NULL;
 619     GList *it;
 620
 621     for (it = self->entries; it; it = g_list_next(it)) {
 622         ObMenuEntry *e = it->data;
 623
 624         if (e->id == id) {
 625             ret = e;
 626             break;
 627         }
 628     }
 629     return ret;
 630 }
 631
 632 void menu_find_submenus(ObMenu *self)
 633 {
 634     GList *it;
 635
 636     for (it = self->entries; it; it = g_list_next(it)) {
 637         ObMenuEntry *e = it->data;
 638
 639         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 640             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 641     }
 642 }
 643
 644 void menu_entry_set_label(ObMenuEntry *self, const gchar *label,
 645                           gboolean allow_shortcut)
 646 {
 647     switch (self->type) {
 648     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 649         g_free(self->data.separator.label);
 650         self->data.separator.label = g_strdup(label);
 651         break;
 652     case OB_MENU_ENTRY_TYPE_NORMAL:
 653         g_free(self->data.normal.label);
 654         self->data.normal.shortcut =
 655             parse_shortcut(label, allow_shortcut, &self->data.normal.label,
 656                            &self->data.normal.shortcut_position);
 657         break;
 658     default:
 659         g_assert_not_reached();
 660     }
 661 }
 662
 663 void menu_show_all_shortcuts(ObMenu *self, gboolean show)
 664 {
 665     self->show_all_shortcuts = show;
 666 }