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, gboolean allow_shortcut,
  58                                gchar **strippedlabel, 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_destroy_notify(client_dest, NULL);
 114 }
 115
 116 void menu_shutdown(gboolean reconfig)
 117 {
 118     if (!reconfig)
 119         client_remove_destroy_notify(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, gboolean allow_shortcut,
 189                                gchar **strippedlabel, 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         /* if allow_shortcut is false, then you can't use the &, instead you
 205            have to just use the first valid character
 206         */
 207
 208         i = strchr(*strippedlabel, '&');
 209         if (allow_shortcut && i != NULL) {
 210             /* there is an ampersand in the string */
 211
 212             /* you have to use a printable ascii character for shortcuts
 213                don't allow space either, so you can have like "a & b"
 214             */
 215             if (VALID_SHORTCUT(*(i+1))) {
 216                 shortcut = g_unichar_tolower(g_utf8_get_char(i+1));
 217                 *position = i - *strippedlabel;
 218
 219                 /* remove the & from the string */
 220                 for (; *i != '\0'; ++i)
 221                     *i = *(i+1);
 222             }
 223         } else {
 224             /* there is no ampersand, so find the first valid character to use
 225                instead */
 226
 227             for (i = *strippedlabel; *i != '\0'; ++i)
 228                 if (VALID_SHORTCUT(*i)) {
 229                     *position = i - *strippedlabel;
 230                     shortcut = g_unichar_tolower(g_utf8_get_char(i));
 231                     break;
 232                 }
 233         }
 234     }
 235     return shortcut;
 236 }
 237
 238 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 239                             gpointer data)
 240 {
 241     ObMenuParseState *state = data;
 242     gchar *label;
 243
 244     if (state->parent) {
 245         if (parse_attr_string("label", node, &label)) {
 246             GSList *acts = NULL;
 247
 248             for (node = node->children; node; node = node->next)
 249                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 250                     ObAction *a = action_parse
 251                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 252                     if (a)
 253                         acts = g_slist_append(acts, a);
 254                 }
 255             menu_add_normal(state->parent, -1, label, acts, FALSE);
 256             g_free(label);
 257         }
 258     }
 259 }
 260
 261 static void parse_menu_separator(ObParseInst *i,
 262                                  xmlDocPtr doc, xmlNodePtr node,
 263                                  gpointer data)
 264 {
 265     ObMenuParseState *state = data;
 266
 267     if (state->parent) {
 268         gchar *label;
 269
 270         if (!parse_attr_string("label", node, &label))
 271             label = NULL;
 272
 273         menu_add_separator(state->parent, -1, label);
 274         g_free(label);
 275     }
 276 }
 277
 278 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 279                        gpointer data)
 280 {
 281     ObMenuParseState *state = data;
 282     gchar *name = NULL, *title = NULL, *script = NULL;
 283     ObMenu *menu;
 284
 285     if (!parse_attr_string("id", node, &name))
 286         goto parse_menu_fail;
 287
 288     if (!g_hash_table_lookup(menu_hash, name)) {
 289         if (!parse_attr_string("label", node, &title))
 290             goto parse_menu_fail;
 291
 292         if ((menu = menu_new(name, title, FALSE, NULL))) {
 293             menu->pipe_creator = state->pipe_creator;
 294             if (parse_attr_string("execute", node, &script)) {
 295                 menu->execute = parse_expand_tilde(script);
 296             } else {
 297                 ObMenu *old;
 298
 299                 old = state->parent;
 300                 state->parent = menu;
 301                 parse_tree(i, doc, node->children);
 302                 state->parent = old;
 303             }
 304         }
 305     }
 306
 307     if (state->parent)
 308         menu_add_submenu(state->parent, -1, name);
 309
 310 parse_menu_fail:
 311     g_free(name);
 312     g_free(title);
 313     g_free(script);
 314 }
 315
 316 ObMenu* menu_new(const gchar *name, const gchar *title,
 317                  gboolean allow_shortcut_selection, gpointer data)
 318 {
 319     ObMenu *self;
 320
 321     self = g_new0(ObMenu, 1);
 322     self->name = g_strdup(name);
 323     self->data = data;
 324
 325     self->shortcut = parse_shortcut(title, allow_shortcut_selection,
 326                                     &self->title, &self->shortcut_position);
 327
 328     g_hash_table_replace(menu_hash, self->name, self);
 329
 330     /* Each menu has a single more_menu.  When the menu spills past what
 331        can fit on the screen, a new menu frame entry is created from this
 332        more_menu, and a new menu frame for the submenu is created for this
 333        menu, also pointing to the more_menu.
 334
 335        This can be done multiple times using the same more_menu.
 336
 337        more_menu->more_menu will always be NULL, since there is only 1 for
 338        each menu. */
 339     self->more_menu = g_new0(ObMenu, 1);
 340     self->more_menu->name = _("More...");
 341     self->more_menu->title = _("More...");
 342     self->more_menu->data = data;
 343     self->more_menu->shortcut = g_unichar_tolower(g_utf8_get_char("M"));
 344
 345     self->more_menu->show_func = self->show_func;
 346     self->more_menu->hide_func = self->hide_func;
 347     self->more_menu->update_func = self->update_func;
 348     self->more_menu->execute_func = self->execute_func;
 349     self->more_menu->destroy_func = self->destroy_func;
 350     self->more_menu->place_func = self->place_func;
 351
 352     return self;
 353 }
 354
 355 static void menu_destroy_hash_value(ObMenu *self)
 356 {
 357     /* make sure its not visible */
 358     {
 359         GList *it;
 360         ObMenuFrame *f;
 361
 362         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 363             f = it->data;
 364             if (f->menu == self)
 365                 menu_frame_hide_all();
 366         }
 367     }
 368
 369     if (self->destroy_func)
 370         self->destroy_func(self, self->data);
 371
 372     menu_clear_entries(self);
 373     g_free(self->name);
 374     g_free(self->title);
 375     g_free(self->execute);
 376     g_free(self->more_menu);
 377
 378     g_free(self);
 379 }
 380
 381 void menu_free(ObMenu *menu)
 382 {
 383     if (menu)
 384         g_hash_table_remove(menu_hash, menu->name);
 385 }
 386
 387 void menu_show(gchar *name, gint x, gint y, gint button, ObClient *client)
 388 {
 389     ObMenu *self;
 390     ObMenuFrame *frame;
 391
 392     if (!(self = menu_from_name(name))
 393         || keyboard_interactively_grabbed()) return;
 394
 395     /* if the requested menu is already the top visible menu, then don't
 396        bother */
 397     if (menu_frame_visible) {
 398         frame = menu_frame_visible->data;
 399         if (frame->menu == self)
 400             return;
 401     }
 402
 403     menu_frame_hide_all();
 404
 405     frame = menu_frame_new(self, 0, client);
 406     if (!menu_frame_show_topmenu(frame, x, y, button))
 407         menu_frame_free(frame);
 408     else if (!button) {
 409         /* select the first entry if it's not a submenu and we opened
 410          * the menu with the keyboard, and skip all headers */
 411         GList *it = frame->entries;
 412         while (it) {
 413             ObMenuEntryFrame *e = it->data;
 414             if (e->entry->type == OB_MENU_ENTRY_TYPE_NORMAL) {
 415                 menu_frame_select(frame, e, FALSE);
 416                 break;
 417             } else if (e->entry->type == OB_MENU_ENTRY_TYPE_SEPARATOR)
 418                 it = g_list_next(it);
 419             else
 420                 break;
 421         }
 422     }
 423 }
 424
 425 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 426 {
 427     ObMenuEntry *self;
 428
 429     g_assert(menu);
 430
 431     self = g_new0(ObMenuEntry, 1);
 432     self->ref = 1;
 433     self->type = type;
 434     self->menu = menu;
 435     self->id = id;
 436
 437     switch (type) {
 438     case OB_MENU_ENTRY_TYPE_NORMAL:
 439         self->data.normal.enabled = TRUE;
 440         break;
 441     case OB_MENU_ENTRY_TYPE_SUBMENU:
 442     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 443         break;
 444     }
 445
 446     return self;
 447 }
 448
 449 void menu_entry_ref(ObMenuEntry *self)
 450 {
 451     ++self->ref;
 452 }
 453
 454 void menu_entry_unref(ObMenuEntry *self)
 455 {
 456     if (self && --self->ref == 0) {
 457         switch (self->type) {
 458         case OB_MENU_ENTRY_TYPE_NORMAL:
 459             g_free(self->data.normal.label);
 460             while (self->data.normal.actions) {
 461                 action_unref(self->data.normal.actions->data);
 462                 self->data.normal.actions =
 463                     g_slist_delete_link(self->data.normal.actions,
 464                                         self->data.normal.actions);
 465             }
 466             break;
 467         case OB_MENU_ENTRY_TYPE_SUBMENU:
 468             g_free(self->data.submenu.name);
 469             break;
 470         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 471             break;
 472         }
 473
 474         g_free(self);
 475     }
 476 }
 477
 478 void menu_clear_entries(ObMenu *self)
 479 {
 480 #ifdef DEBUG
 481     /* assert that the menu isn't visible */
 482     {
 483         GList *it;
 484         ObMenuFrame *f;
 485
 486         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 487             f = it->data;
 488             g_assert(f->menu != self);
 489         }
 490     }
 491 #endif
 492
 493     while (self->entries) {
 494         menu_entry_unref(self->entries->data);
 495         self->entries = g_list_delete_link(self->entries, self->entries);
 496     }
 497     self->more_menu->entries = self->entries; /* keep it in sync */
 498 }
 499
 500 void menu_entry_remove(ObMenuEntry *self)
 501 {
 502     self->menu->entries = g_list_remove(self->menu->entries, self);
 503     menu_entry_unref(self);
 504 }
 505
 506 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, const gchar *label,
 507                              GSList *actions, gboolean allow_shortcut)
 508 {
 509     ObMenuEntry *e;
 510
 511     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 512     e->data.normal.actions = actions;
 513
 514     menu_entry_set_label(e, label, allow_shortcut);
 515
 516     self->entries = g_list_append(self->entries, e);
 517     self->more_menu->entries = self->entries; /* keep it in sync */
 518     return e;
 519 }
 520
 521 ObMenuEntry* menu_get_more(ObMenu *self, guint show_from)
 522 {
 523     ObMenuEntry *e;
 524     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, -1);
 525     /* points to itself */
 526     e->data.submenu.name = g_strdup(self->name);
 527     e->data.submenu.submenu = self;
 528     e->data.submenu.show_from = show_from;
 529     return e;
 530 }
 531
 532 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, const gchar *submenu)
 533 {
 534     ObMenuEntry *e;
 535
 536     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 537     e->data.submenu.name = g_strdup(submenu);
 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_add_separator(ObMenu *self, gint id, const gchar *label)
 545 {
 546     ObMenuEntry *e;
 547
 548     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 549
 550     menu_entry_set_label(e, label, FALSE);
 551
 552     self->entries = g_list_append(self->entries, e);
 553     self->more_menu->entries = self->entries; /* keep it in sync */
 554     return e;
 555 }
 556
 557 void menu_set_show_func(ObMenu *self, ObMenuShowFunc func)
 558 {
 559     self->show_func = func;
 560     self->more_menu->show_func = func; /* keep it in sync */
 561 }
 562
 563 void menu_set_hide_func(ObMenu *self, ObMenuHideFunc func)
 564 {
 565     self->hide_func = func;
 566     self->more_menu->hide_func = func; /* keep it in sync */
 567 }
 568
 569 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 570 {
 571     self->update_func = func;
 572     self->more_menu->update_func = func; /* keep it in sync */
 573 }
 574
 575 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 576 {
 577     self->execute_func = func;
 578     self->more_menu->execute_func = func; /* keep it in sync */
 579 }
 580
 581 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 582 {
 583     self->destroy_func = func;
 584     self->more_menu->destroy_func = func; /* keep it in sync */
 585 }
 586
 587 void menu_set_place_func(ObMenu *self, ObMenuPlaceFunc func)
 588 {
 589     self->place_func = func;
 590     self->more_menu->place_func = func; /* keep it in sync */
 591 }
 592
 593 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 594 {
 595     ObMenuEntry *ret = NULL;
 596     GList *it;
 597
 598     for (it = self->entries; it; it = g_list_next(it)) {
 599         ObMenuEntry *e = it->data;
 600
 601         if (e->id == id) {
 602             ret = e;
 603             break;
 604         }
 605     }
 606     return ret;
 607 }
 608
 609 void menu_find_submenus(ObMenu *self)
 610 {
 611     GList *it;
 612
 613     for (it = self->entries; it; it = g_list_next(it)) {
 614         ObMenuEntry *e = it->data;
 615
 616         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 617             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 618     }
 619 }
 620
 621 void menu_entry_set_label(ObMenuEntry *self, const gchar *label,
 622                           gboolean allow_shortcut)
 623 {
 624     switch (self->type) {
 625     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 626         g_free(self->data.separator.label);
 627         self->data.separator.label = g_strdup(label);
 628         break;
 629     case OB_MENU_ENTRY_TYPE_NORMAL:
 630         g_free(self->data.normal.label);
 631         self->data.normal.shortcut =
 632             parse_shortcut(label, allow_shortcut, &self->data.normal.label,
 633                            &self->data.normal.shortcut_position);
 634         break;
 635     default:
 636         g_assert_not_reached();
 637     }
 638 }
 639
 640 void menu_show_all_shortcuts(ObMenu *self, gboolean show)
 641 {
 642     self->show_all_shortcuts = show;
 643 }