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        Ben 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 "parser/parse.h"
  34
  35 typedef struct _ObMenuParseState ObMenuParseState;
  36
  37 struct _ObMenuParseState
  38 {
  39     ObMenu *parent;
  40     ObMenu *pipe_creator;
  41 };
  42
  43 static GHashTable *menu_hash = NULL;
  44 static ObParseInst *menu_parse_inst;
  45 static ObMenuParseState menu_parse_state;
  46
  47 static void menu_destroy_hash_value(ObMenu *self);
  48 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  49                             gpointer data);
  50 static void parse_menu_separator(ObParseInst *i,
  51                                  xmlDocPtr doc, xmlNodePtr node,
  52                                  gpointer data);
  53 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
  54                        gpointer data);
  55
  56 static void client_dest(ObClient *client, gpointer data)
  57 {
  58     /* menus can be associated with a client, so close any that are since
  59        we are disappearing now */
  60     menu_frame_hide_all_client(client);
  61 }
  62
  63 void menu_startup(gboolean reconfig)
  64 {
  65     xmlDocPtr doc;
  66     xmlNodePtr node;
  67     gboolean loaded = FALSE;
  68     GSList *it;
  69
  70     menu_hash = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  71                                       (GDestroyNotify)menu_destroy_hash_value);
  72
  73     client_list_menu_startup(reconfig);
  74     client_menu_startup();
  75
  76     menu_parse_inst = parse_startup();
  77
  78     menu_parse_state.parent = NULL;
  79     menu_parse_state.pipe_creator = NULL;
  80     parse_register(menu_parse_inst, "menu", parse_menu, &menu_parse_state);
  81     parse_register(menu_parse_inst, "item", parse_menu_item,
  82                    &menu_parse_state);
  83     parse_register(menu_parse_inst, "separator",
  84                    parse_menu_separator, &menu_parse_state);
  85
  86     for (it = config_menu_files; it; it = g_slist_next(it)) {
  87         if (parse_load_menu(it->data, &doc, &node)) {
  88             loaded = TRUE;
  89             parse_tree(menu_parse_inst, doc, node->children);
  90             xmlFreeDoc(doc);
  91         }
  92     }
  93     if (!loaded) {
  94         if (parse_load_menu("menu.xml", &doc, &node)) {
  95             parse_tree(menu_parse_inst, doc, node->children);
  96             xmlFreeDoc(doc);
  97         }
  98     }
  99
 100     g_assert(menu_parse_state.parent == NULL);
 101
 102     if (!reconfig)
 103         client_add_destructor(client_dest, NULL);
 104 }
 105
 106 void menu_shutdown(gboolean reconfig)
 107 {
 108     if (!reconfig)
 109         client_remove_destructor(client_dest);
 110
 111     parse_shutdown(menu_parse_inst);
 112     menu_parse_inst = NULL;
 113
 114     client_list_menu_shutdown(reconfig);
 115
 116     menu_frame_hide_all();
 117     g_hash_table_destroy(menu_hash);
 118     menu_hash = NULL;
 119 }
 120
 121 static gboolean menu_pipe_submenu(gpointer key, gpointer val, gpointer data)
 122 {
 123     ObMenu *menu = val;
 124     return menu->pipe_creator == data;
 125 }
 126
 127 void menu_pipe_execute(ObMenu *self)
 128 {
 129     xmlDocPtr doc;
 130     xmlNodePtr node;
 131     gchar *output;
 132     GError *err = NULL;
 133
 134     if (!self->execute)
 135         return;
 136
 137     if (!g_spawn_command_line_sync(self->execute, &output, NULL, NULL, &err)) {
 138         g_warning("Failed to execute command for pipe-menu: %s", err->message);
 139         g_error_free(err);
 140         return;
 141     }
 142
 143     if (parse_load_mem(output, strlen(output),
 144                        "openbox_pipe_menu", &doc, &node))
 145     {
 146         g_hash_table_foreach_remove(menu_hash, menu_pipe_submenu, self);
 147         menu_clear_entries(self);
 148
 149         menu_parse_state.pipe_creator = self;
 150         menu_parse_state.parent = self;
 151         parse_tree(menu_parse_inst, doc, node->children);
 152         xmlFreeDoc(doc);
 153     } else {
 154         g_warning("Invalid output from pipe-menu: %s", self->execute);
 155     }
 156
 157     g_free(output);
 158 }
 159
 160 static ObMenu* menu_from_name(gchar *name)
 161 {
 162     ObMenu *self = NULL;
 163
 164     g_assert(name != NULL);
 165
 166     if (!(self = g_hash_table_lookup(menu_hash, name)))
 167         g_warning("Attempted to access menu '%s' but it does not exist.",
 168                   name);
 169     return self;
 170 }
 171
 172 static void parse_menu_item(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 173                             gpointer data)
 174 {
 175     ObMenuParseState *state = data;
 176     gchar *label;
 177
 178     if (state->parent) {
 179         if (parse_attr_string("label", node, &label)) {
 180             GSList *acts = NULL;
 181
 182             for (node = node->children; node; node = node->next)
 183                 if (!xmlStrcasecmp(node->name, (const xmlChar*) "action")) {
 184                     ObAction *a = action_parse
 185                         (i, doc, node, OB_USER_ACTION_MENU_SELECTION);
 186                     if (a)
 187                         acts = g_slist_append(acts, a);
 188                 }
 189             menu_add_normal(state->parent, -1, label, acts);
 190             g_free(label);
 191         }
 192     }
 193 }
 194
 195 static void parse_menu_separator(ObParseInst *i,
 196                                  xmlDocPtr doc, xmlNodePtr node,
 197                                  gpointer data)
 198 {
 199     ObMenuParseState *state = data;
 200
 201     if (state->parent)
 202         menu_add_separator(state->parent, -1);
 203 }
 204
 205 static void parse_menu(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
 206                        gpointer data)
 207 {
 208     ObMenuParseState *state = data;
 209     gchar *name = NULL, *title = NULL, *script = NULL;
 210     ObMenu *menu;
 211
 212     if (!parse_attr_string("id", node, &name))
 213         goto parse_menu_fail;
 214
 215     if (!g_hash_table_lookup(menu_hash, name)) {
 216         if (!parse_attr_string("label", node, &title))
 217             goto parse_menu_fail;
 218
 219         if ((menu = menu_new(name, title, NULL))) {
 220             menu->pipe_creator = state->pipe_creator;
 221             if (parse_attr_string("execute", node, &script)) {
 222                 menu->execute = parse_expand_tilde(script);
 223             } else {
 224                 ObMenu *old;
 225
 226                 old = state->parent;
 227                 state->parent = menu;
 228                 parse_tree(i, doc, node->children);
 229                 state->parent = old;
 230             }
 231         }
 232     }
 233
 234     if (state->parent)
 235         menu_add_submenu(state->parent, -1, name);
 236
 237 parse_menu_fail:
 238     g_free(name);
 239     g_free(title);
 240     g_free(script);
 241 }
 242
 243 ObMenu* menu_new(gchar *name, gchar *title, gpointer data)
 244 {
 245     ObMenu *self;
 246
 247     self = g_new0(ObMenu, 1);
 248     self->name = g_strdup(name);
 249     self->title = g_strdup(title);
 250     self->data = data;
 251
 252     g_hash_table_replace(menu_hash, self->name, self);
 253
 254     return self;
 255 }
 256
 257 static void menu_destroy_hash_value(ObMenu *self)
 258 {
 259     /* make sure its not visible */
 260     {
 261         GList *it;
 262         ObMenuFrame *f;
 263
 264         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 265             f = it->data;
 266             if (f->menu == self)
 267                 menu_frame_hide_all();
 268         }
 269     }
 270
 271     if (self->destroy_func)
 272         self->destroy_func(self, self->data);
 273
 274     menu_clear_entries(self);
 275     g_free(self->name);
 276     g_free(self->title);
 277     g_free(self->execute);
 278
 279     g_free(self);
 280 }
 281
 282 void menu_free(ObMenu *menu)
 283 {
 284     g_hash_table_remove(menu_hash, menu->name);
 285 }
 286
 287 void menu_show(gchar *name, gint x, gint y, ObClient *client)
 288 {
 289     ObMenu *self;
 290     ObMenuFrame *frame;
 291     guint i;
 292
 293     if (!(self = menu_from_name(name))
 294         || keyboard_interactively_grabbed()) return;
 295
 296     /* if the requested menu is already the top visible menu, then don't
 297        bother */
 298     if (menu_frame_visible) {
 299         frame = menu_frame_visible->data;
 300         if (frame->menu == self)
 301             return;
 302     }
 303
 304     menu_frame_hide_all();
 305
 306     frame = menu_frame_new(self, client);
 307     if (client && x < 0 && y < 0) {
 308         x = client->frame->area.x + client->frame->size.left;
 309         y = client->frame->area.y + client->frame->size.top;
 310         menu_frame_move(frame, x, y);
 311     } else
 312         menu_frame_move(frame,
 313                         x - ob_rr_theme->bwidth, y - ob_rr_theme->bwidth);
 314     for (i = 0; i < screen_num_monitors; ++i) {
 315         Rect *a = screen_physical_area_monitor(i);
 316         if (RECT_CONTAINS(*a, x, y)) {
 317             frame->monitor = i;
 318             break;
 319         }
 320     }
 321     if (!menu_frame_show(frame, NULL))
 322         menu_frame_free(frame);
 323     else if (frame->entries) {
 324         ObMenuEntryFrame *e = frame->entries->data;
 325         if (e->entry->type == OB_MENU_ENTRY_TYPE_NORMAL &&
 326             e->entry->data.normal.enabled)
 327                 menu_frame_select(frame, e);
 328     }
 329 }
 330
 331 static ObMenuEntry* menu_entry_new(ObMenu *menu, ObMenuEntryType type, gint id)
 332 {
 333     ObMenuEntry *self;
 334
 335     g_assert(menu);
 336
 337     self = g_new0(ObMenuEntry, 1);
 338     self->type = type;
 339     self->menu = menu;
 340     self->id = id;
 341
 342     switch (type) {
 343     case OB_MENU_ENTRY_TYPE_NORMAL:
 344         self->data.normal.enabled = TRUE;
 345         break;
 346     case OB_MENU_ENTRY_TYPE_SUBMENU:
 347     case OB_MENU_ENTRY_TYPE_SEPARATOR:
 348         break;
 349     }
 350
 351     return self;
 352 }
 353
 354 void menu_entry_free(ObMenuEntry *self)
 355 {
 356     if (self) {
 357         switch (self->type) {
 358         case OB_MENU_ENTRY_TYPE_NORMAL:
 359             g_free(self->data.normal.label);
 360             while (self->data.normal.actions) {
 361                 action_unref(self->data.normal.actions->data);
 362                 self->data.normal.actions =
 363                     g_slist_delete_link(self->data.normal.actions,
 364                                         self->data.normal.actions);
 365             }
 366             break;
 367         case OB_MENU_ENTRY_TYPE_SUBMENU:
 368             g_free(self->data.submenu.name);
 369             break;
 370         case OB_MENU_ENTRY_TYPE_SEPARATOR:
 371             break;
 372         }
 373
 374         g_free(self);
 375     }
 376 }
 377
 378 void menu_clear_entries(ObMenu *self)
 379 {
 380 #ifdef DEBUG
 381     /* assert that the menu isn't visible */
 382     {
 383         GList *it;
 384         ObMenuFrame *f;
 385
 386         for (it = menu_frame_visible; it; it = g_list_next(it)) {
 387             f = it->data;
 388             g_assert(f->menu != self);
 389         }
 390     }
 391 #endif
 392
 393     while (self->entries) {
 394         menu_entry_free(self->entries->data);
 395         self->entries = g_list_delete_link(self->entries, self->entries);
 396     }
 397 }
 398
 399 void menu_entry_remove(ObMenuEntry *self)
 400 {
 401     self->menu->entries = g_list_remove(self->menu->entries, self);
 402     menu_entry_free(self);
 403 }
 404
 405 ObMenuEntry* menu_add_normal(ObMenu *self, gint id, gchar *label,
 406                              GSList *actions)
 407 {
 408     ObMenuEntry *e;
 409
 410     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_NORMAL, id);
 411     e->data.normal.label = g_strdup(label);
 412     e->data.normal.actions = actions;
 413
 414     self->entries = g_list_append(self->entries, e);
 415     return e;
 416 }
 417
 418 ObMenuEntry* menu_add_submenu(ObMenu *self, gint id, gchar *submenu)
 419 {
 420     ObMenuEntry *e;
 421
 422     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SUBMENU, id);
 423     e->data.submenu.name = g_strdup(submenu);
 424
 425     self->entries = g_list_append(self->entries, e);
 426     return e;
 427 }
 428
 429 ObMenuEntry* menu_add_separator(ObMenu *self, gint id)
 430 {
 431     ObMenuEntry *e;
 432
 433     e = menu_entry_new(self, OB_MENU_ENTRY_TYPE_SEPARATOR, id);
 434
 435     self->entries = g_list_append(self->entries, e);
 436     return e;
 437 }
 438
 439 void menu_set_update_func(ObMenu *self, ObMenuUpdateFunc func)
 440 {
 441     self->update_func = func;
 442 }
 443
 444 void menu_set_execute_func(ObMenu *self, ObMenuExecuteFunc func)
 445 {
 446     self->execute_func = func;
 447 }
 448
 449 void menu_set_destroy_func(ObMenu *self, ObMenuDestroyFunc func)
 450 {
 451     self->destroy_func = func;
 452 }
 453
 454 ObMenuEntry* menu_find_entry_id(ObMenu *self, gint id)
 455 {
 456     ObMenuEntry *ret = NULL;
 457     GList *it;
 458
 459     for (it = self->entries; it; it = g_list_next(it)) {
 460         ObMenuEntry *e = it->data;
 461
 462         if (e->id == id) {
 463             ret = e;
 464             break;
 465         }
 466     }
 467     return ret;
 468 }
 469
 470 void menu_find_submenus(ObMenu *self)
 471 {
 472     GList *it;
 473
 474     for (it = self->entries; it; it = g_list_next(it)) {
 475         ObMenuEntry *e = it->data;
 476
 477         if (e->type == OB_MENU_ENTRY_TYPE_SUBMENU)
 478             e->data.submenu.submenu = menu_from_name(e->data.submenu.name);
 479     }
 480 }