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