Dogcows Code - chaz/openbox/blob - openbox/menu.c

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