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 "keyboard.h"
  28 #include "geom.h"
  29 #include "misc.h"
  30 #include "client_menu.h"
  31 #include "client_list_menu.h"
  32 #include "parser/parse.h"
  33
  34 typedef struct _ObMenuParseState ObMenuParseState;
  35
  36 struct _ObMenuParseState
  37 {
  38     ObMenu *parent;
  39     ObMenu *pipe_creator;
  40 };
  41
  42 static GHashTable *menu_hash = NULL;
  43 static ObParseInst *menu_parse_inst;
  44 static ObMenuParseState menu_parse_state;
  45
  46 static void menu_destroy_hash_value(ObMenu *self);
  47 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  48                             gpointer data);
  49 static void parse_menu_separator(ObParseInst *i,
  50                                  xmlDocPtr doc, xmlNodePtr node,
  51                                  gpointer data);
  52 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  53                        gpointer data);
  54
  55 static void client_dest(ObClient *client, gpointer data)
  56 {
  57     /* menus can be associated with a client, so close any that are since
  58        we are disappearing now */
  59     menu_frame_hide_all_client(client);
  60 }
  61
  62 void menu_startup(gboolean reconfig)
  63 {
  64     xmlDocPtr doc;
  65     xmlNodePtr node;
  66     gboolean loaded = FALSE;
  67     GSList *it;
  68
  69     menu_hash = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  70                                       (GDestroyNotify)menu_destroy_hash_value);
  71
  72     client_list_menu_startup(reconfig);
  73     client_menu_startup();
  74
  75     menu_parse_inst = parse_startup();
  76
  77     menu_parse_state.parent = NULL;
  78     menu_parse_state.pipe_creator = NULL;
  79     parse_register(menu_parse_inst, "menu", parse_menu, &menu_parse_state);
  80     parse_register(menu_parse_inst, "item", parse_menu_item,
  81                    &menu_parse_state);
  82     parse_register(menu_parse_inst, "separator",
  83                    parse_menu_separator, &menu_parse_state);
  84
  85     for (it = config_menu_files; it; it = g_slist_next(it)) {
  86         if (parse_load_menu(it->data, &doc, &node)) {
  87             loaded = TRUE;
  88             parse_tree(menu_parse_inst, doc, node->children);
  89             xmlFreeDoc(doc);
  90         }
  91     }
  92     if (!loaded) {
  93         if (parse_load_menu("menu.xml", &doc, &node)) {
  94             parse_tree(menu_parse_inst, doc, node->children);
  95             xmlFreeDoc(doc);
  96         }
  97     }
  98
  99     g_assert(menu_parse_state.parent == NULL);
 100
 101     if (!reconfig)
 102         client_add_destructor(client_dest, NULL);
 103 }
 104
 105 void menu_shutdown(gboolean reconfig)
 106 {
 107     if (!reconfig)
 108         client_remove_destructor(client_dest);
 109
 110     parse_shutdown(menu_parse_inst);
 111     menu_parse_inst = NULL;
 112
 113     client_list_menu_shutdown(reconfig);
 114
 115     menu_frame_hide_all();
 116     g_hash_table_destroy(menu_hash);
 117     menu_hash = NULL;
 118 }
 119
 120 static gboolean menu_pipe_submenu(gpointer key, gpointer val, gpointer data)
 121 {
 122     ObMenu *menu = val;
 123     return menu->pipe_creator == data;
 124 }
 125
 126 void menu_pipe_execute(ObMenu *self)
 127 {
 128     xmlDocPtr doc;
 129     xmlNodePtr node;
 130     gchar *output;
 131     GError *err = NULL;
 132
 133     if (!self->execute)
 134         return;
 135
 136     if (!g_spawn_command_line_sync(self->execute, &output, NULL, NULL, &err)) {
 137         g_warning("Failed to execute command for pipe-menu: %s", err->message);
 138         g_error_free(err);
 139         return;
 140     }
 141
 142     if (parse_load_mem(output, strlen(output),
 143                        "openbox_pipe_menu", &doc, &node))
 144     {
 145         g_hash_table_foreach_remove(menu_hash, menu_pipe_submenu, self);
 146         menu_clear_entries(self);
 147
 148         menu_parse_state.pipe_creator = self;
 149         menu_parse_state.parent = self;
 150         parse_tree(menu_parse_inst, doc, node->children);
 151         xmlFreeDoc(doc);
 152     } else {
 153         g_warning("Invalid output from pipe-menu: %s", self->execute);
 154     }
 155
 156     g_free(output);
 157 }
 158
 159 static ObMenu* menu_from_name(gchar *name)
 160 {
 161     ObMenu *self = NULL;
 162
 163     g_assert(name != NULL);
 164
 165     if (!(self = g_hash_table_lookup(menu_hash, name)))
 166         g_warning("Attempted to access menu '%s' but it does not exist.",
 167                   name);
 168     return self;
 169 }
 170
 171 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 172                             gpointer data)
 173 {
 174     ObMenuParseState *state = data;
 175     gchar *label;
 176
 177     if (state->parent) {
 178         if (parse_attr_string("label", node, &label)) {
 179             GSList *acts = NULL;
 180
 181             for (node = node->children; node; node = node->next)
 182                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 183                     ObAction *a = action_parse
 184                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 185                     if (a)
 186                         acts = g_slist_append(acts, a);
 187                 }
 188             menu_add_normal(state->parent, -1, label, acts);
 189             g_free(label);
 190         }
 191     }
 192 }
 193
 194 static void parse_menu_separator(ObParseInst *i,
 195                                  xmlDocPtr doc, xmlNodePtr node,
 196                                  gpointer data)
 197 {
 198     ObMenuParseState *state = data;
 199
 200     if (state->parent)
 201         menu_add_separator(state->parent, -1);
 202 }
 203
 204 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 205                        gpointer data)
 206 {
 207     ObMenuParseState *state = data;
 208     gchar *name = NULL, *title = NULL, *script = NULL;
 209     ObMenu *menu;
 210
 211     if (!parse_attr_string("id", node, &name))
 212         goto parse_menu_fail;
 213
 214     if (!g_hash_table_lookup(menu_hash, name)) {
 215         if (!parse_attr_string("label", node, &title))
 216             goto parse_menu_fail;
 217
 218         if ((menu = menu_new(name, title, NULL))) {
 219             menu->pipe_creator = state->pipe_creator;
 220             if (parse_attr_string("execute", node, &script)) {
 221                 menu->execute = parse_expand_tilde(script);
 222             } else {
 223                 ObMenu *old;
 224
 225                 old = state->parent;
 226                 state->parent = menu;
 227                 parse_tree(i, doc, node->children);
 228                 state->parent = old;
 229             }
 230         }
 231     }
 232
 233     if (state->parent)
 234         menu_add_submenu(state->parent, -1, name);
 235
 236 parse_menu_fail:
 237     g_free(name);
 238     g_free(title);
 239     g_free(script);
 240 }
 241
 242 ObMenu* menu_new(gchar *name, gchar *title, gpointer data)
 243 {
 244     ObMenu *self;
 245
 246     self = g_new0(ObMenu, 1);
 247     self->name = g_strdup(name);
 248     self->title = g_strdup(title);
 249     self->data = data;
 250
 251     g_hash_table_replace(menu_hash, self->name, self);
 252
 253     return self;
 254 }
 255
 256 static void menu_destroy_hash_value(ObMenu *self)
 257 {
 258     /* make sure its not visible */
 259     {
 260         GList *it;
 261         ObMenuFrame *f;
 262
 263         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 264             f = it->data;
 265             if (f->menu == self)
 266                 menu_frame_hide_all();
 267         }
 268     }
 269
 270     if (self->destroy_func)
 271         self->destroy_func(self, self->data);
 272
 273     menu_clear_entries(self);
 274     g_free(self->name);
 275     g_free(self->title);
 276     g_free(self->execute);
 277
 278     g_free(self);
 279 }
 280
 281 void menu_free(ObMenu *menu)
 282 {
 283     g_hash_table_remove(menu_hash, menu->name);
 284 }
 285
 286 void menu_show(gchar *name, gint x, gint y, ObClient *client)
 287 {
 288     ObMenu *self;
 289     ObMenuFrame *frame;
 290     guint i;
 291
 292     if (!(self = menu_from_name(name))
 293         || keyboard_interactively_grabbed()) return;
 294
 295     /* if the requested menu is already the top visible menu, then don't
 296        bother */
 297     if (menu_frame_visible) {
 298         frame = menu_frame_visible->data;
 299         if (frame->menu == self)
 300             return;
 301     }
 302
 303     menu_frame_hide_all();
 304
 305     frame = menu_frame_new(self, client);
 306     if (client && x < 0 && y < 0) {
 307         x = client->frame->area.x + client->frame->size.left;
 308         y = client->frame->area.y + client->frame->size.top;
 309         menu_frame_move(frame, x, y);
 310     } else
 311         menu_frame_move(frame,
 312                         x - ob_rr_theme->bwidth, y - ob_rr_theme->bwidth);
 313     for (i = 0; i < screen_num_monitors; ++i) {
 314         Rect *a = screen_physical_area_monitor(i);
 315         if (RECT_CONTAINS(*a, x, y)) {
 316             frame->monitor = i;
 317             break;
 318         }
 319     }
 320     if (!menu_frame_show(frame, NULL))
 321         menu_frame_free(frame);
 322     else if (frame->entries) {
 323         ObMenuEntryFrame *e = frame->entries->data;
 324         if (e->entry->type == OB_MENU_ENTRY_TYPE_NORMAL &&
 325             e->entry->data.normal.enabled)
 326                 menu_frame_select(frame, e);
 327     }
 328 }
 329
 330 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 331 {
 332     ObMenuEntry *self;
 333
 334     g_assert(menu);
 335
 336     self = g_new0(ObMenuEntry, 1);
 337     self->type = type;
 338     self->menu = menu;
 339     self->id = id;
 340
 341     switch (type) {
 342     case OB_MENU_ENTRY_TYPE_NORMAL:
 343         self->data.normal.enabled = TRUE;
 344         break;
 345     case OB_MENU_ENTRY_TYPE_SUBMENU:
 346     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 347         break;
 348     }
 349
 350     return self;
 351 }
 352
 353 void menu_entry_free(ObMenuEntry *self)
 354 {
 355     if (self) {
 356         switch (self->type) {
 357         case OB_MENU_ENTRY_TYPE_NORMAL:
 358             g_free(self->data.normal.label);
 359             while (self->data.normal.actions) {
 360                 action_unref(self->data.normal.actions->data);
 361                 self->data.normal.actions =
 362                     g_slist_delete_link(self->data.normal.actions,
 363                                         self->data.normal.actions);
 364             }
 365             break;
 366         case OB_MENU_ENTRY_TYPE_SUBMENU:
 367             g_free(self->data.submenu.name);
 368             break;
 369         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 370             break;
 371         }
 372
 373         g_free(self);
 374     }
 375 }
 376
 377 void menu_clear_entries(ObMenu *self)
 378 {
 379 #ifdef DEBUG
 380     /* assert that the menu isn't visible */
 381     {
 382         GList *it;
 383         ObMenuFrame *f;
 384
 385         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 386             f = it->data;
 387             g_assert(f->menu != self);
 388         }
 389     }
 390 #endif
 391
 392     while (self->entries) {
 393         menu_entry_free(self->entries->data);
 394         self->entries = g_list_delete_link(self->entries, self->entries);
 395     }
 396 }
 397
 398 void menu_entry_remove(ObMenuEntry *self)
 399 {
 400     self->menu->entries = g_list_remove(self->menu->entries, self);
 401     menu_entry_free(self);
 402 }
 403
 404 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, gchar *label,
 405                              GSList *actions)
 406 {
 407     ObMenuEntry *e;
 408
 409     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 410     e->data.normal.label = g_strdup(label);
 411     e->data.normal.actions = actions;
 412
 413     self->entries = g_list_append(self->entries, e);
 414     return e;
 415 }
 416
 417 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, gchar *submenu)
 418 {
 419     ObMenuEntry *e;
 420
 421     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 422     e->data.submenu.name = g_strdup(submenu);
 423
 424     self->entries = g_list_append(self->entries, e);
 425     return e;
 426 }
 427
 428 ObMenuEntry* menu_add_separator(ObMenu *self, gint id)
 429 {
 430     ObMenuEntry *e;
 431
 432     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 433
 434     self->entries = g_list_append(self->entries, e);
 435     return e;
 436 }
 437
 438 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 439 {
 440     self->update_func = func;
 441 }
 442
 443 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 444 {
 445     self->execute_func = func;
 446 }
 447
 448 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 449 {
 450     self->destroy_func = func;
 451 }
 452
 453 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 454 {
 455     ObMenuEntry *ret = NULL;
 456     GList *it;
 457
 458     for (it = self->entries; it; it = g_list_next(it)) {
 459         ObMenuEntry *e = it->data;
 460
 461         if (e->id == id) {
 462             ret = e;
 463             break;
 464         }
 465     }
 466     return ret;
 467 }
 468
 469 void menu_find_submenus(ObMenu *self)
 470 {
 471     GList *it;
 472
 473     for (it = self->entries; it; it = g_list_next(it)) {
 474         ObMenuEntry *e = it->data;
 475
 476         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 477             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 478     }
 479 }