ROX-Filer/src/appmenu.c

   1 /*
   2  * $Id$
   3  *
   4  * ROX-Filer, filer for the ROX desktop project
   5  * Copyright (C) 2002, the ROX-Filer team.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  19  * Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 /* appmenu.c - handles application-specific menus read from XMLwrapper.xml */
  23
  24 #include "config.h"
  25
  26 #include <gtk/gtk.h>
  27 #include <errno.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <ctype.h>
  31
  32 #include <libxml/parser.h>
  33
  34 #include "global.h"
  35
  36 #include "fscache.h"
  37 #include "gui_support.h"
  38 #include "support.h"
  39 #include "menu.h"
  40 #include "filer.h"
  41 #include "appmenu.h"
  42 #include "dir.h"
  43 #include "type.h"
  44 #include "appinfo.h"
  45 #include "xml.h"
  46
  47 /* Static prototypes */
  48 static void apprun_menu(GtkWidget *item, gpointer data);
  49 static GtkWidget *create_menu_item(xmlNode *node);
  50
  51 /* There can only be one menu open at a time... we store: */
  52 static GtkWidget *current_menu = NULL;  /* The GtkMenu */
  53 static guchar *current_app_path = NULL; /* The path of the application */
  54 static GList *current_items = NULL;     /* The GtkMenuItems we added directly
  55                                          * to it --- not submenu items.
  56                                          */
  57
  58 /****************************************************************
  59  *                      EXTERNAL INTERFACE                      *
  60  ****************************************************************/
  61
  62 /* Removes all appmenu menu items */
  63 void appmenu_remove(void)
  64 {
  65         GList *next;
  66
  67         if (!current_menu)
  68                 return;
  69
  70         for (next = current_items; next; next = next->next)
  71                 gtk_widget_destroy((GtkWidget *) next->data);
  72
  73         null_g_free(&current_app_path);
  74         current_menu = NULL;
  75
  76         g_list_free(current_items);
  77         current_items = NULL;
  78 }
  79
  80 /* Add AppMenu entries to 'menu', if appropriate.
  81  * This function modifies the menu stored in "menu".
  82  * 'app_dir' is the pathname of the application directory, and 'item'
  83  * is the corresponding DirItem.
  84  * Call appmenu_remove() to undo the effect.
  85  */
  86 void appmenu_add(const gchar *app_dir, DirItem *item, GtkWidget *menu)
  87 {
  88         XMLwrapper      *ai = NULL;
  89         xmlNode *node;
  90         GList   *next;
  91         GtkWidget *sep;
  92
  93         g_return_if_fail(menu != NULL);
  94
  95         /* Should have called appmenu_remove() already... */
  96         g_return_if_fail(current_menu == NULL);
  97
  98         ai = appinfo_get(app_dir, item);
  99         if (!ai)
 100                 return; /* No appmenu (or invalid XML) */
 101
 102         /* OK, we've got a valid info file and parsed it.
 103          * Now build the GtkMenuItem widgets and add them to the menu
 104          * (if there are any).
 105          */
 106
 107         node = xml_get_section(ai, NULL, "AppMenu");
 108         if (!node)
 109                 goto out;
 110
 111         g_return_if_fail(current_items == NULL);
 112
 113         /* Add the menu entries */
 114         for (node = node->xmlChildrenNode; node; node = node->next)
 115         {
 116                 GtkWidget *item;
 117
 118                 item = create_menu_item(node);
 119
 120                 if (item)
 121                         current_items = g_list_prepend(current_items, item);
 122         }
 123
 124         sep = gtk_menu_item_new();
 125         current_items = g_list_prepend(current_items, sep);
 126         gtk_widget_show(sep);
 127
 128         for (next = current_items; next; next = next->next)
 129                 gtk_menu_shell_prepend(GTK_MENU_SHELL(menu),
 130                                         GTK_WIDGET(next->data));
 131
 132         current_menu = menu;
 133         current_app_path = g_strdup(app_dir);
 134
 135 out:
 136         if (ai)
 137                 g_object_unref(ai);
 138 }
 139
 140 /****************************************************************
 141  *                      INTERNAL FUNCTIONS                      *
 142  ****************************************************************/
 143
 144 /* Create a new menu and return it */
 145 static GtkWidget *appmenu_add_submenu(xmlNode *subm_node)
 146 {
 147         xmlNode *node;
 148         GtkWidget *sub_menu;
 149
 150         /* Create the new submenu */
 151         sub_menu = gtk_menu_new();
 152
 153         /* Add the menu entries */
 154         for (node = subm_node->xmlChildrenNode; node; node = node->next)
 155         {
 156                 GtkWidget *item;
 157
 158                 item = create_menu_item(node);
 159                 if (item)
 160                         gtk_menu_shell_append(GTK_MENU_SHELL(sub_menu), item);
 161         }
 162
 163         return sub_menu;
 164 }
 165
 166 /* Create and return a menu item */
 167 static GtkWidget *create_menu_item(xmlNode *node)
 168 {
 169         GtkWidget *item;
 170         xmlNode *label_node;
 171         guchar  *label, *option = NULL;
 172         gboolean is_submenu;
 173
 174         if (node->type != XML_ELEMENT_NODE)
 175                 return NULL;
 176
 177         if (strcmp(node->name, "Item") == 0)
 178         {
 179                 is_submenu = FALSE;
 180                 option = xmlGetProp(node, "option");
 181         }
 182         else if (strcmp(node->name, "AppMenu") == 0)
 183                 is_submenu = TRUE;
 184         else
 185                 return NULL;
 186
 187         /* Create the item */
 188         label_node = get_subnode(node, NULL, "Label");
 189         if (label_node)
 190         {
 191                 label = xmlNodeListGetString(label_node->doc,
 192                                         label_node->xmlChildrenNode, 1);
 193         }
 194         else
 195         {
 196                 label = xmlGetProp(node, "label");
 197                 if (!label)
 198                         label = g_strdup(_("<missing label>"));
 199         }
 200         item = gtk_menu_item_new_with_label(label);
 201
 202         gtk_widget_set_accel_path(item, NULL, NULL);    /* XXX */
 203
 204         g_free(label);
 205
 206         if (is_submenu)
 207         {
 208                 /* Add submenu items */
 209
 210                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item),
 211                                           appmenu_add_submenu(node));
 212         }
 213         else
 214         {
 215                 /* Set up callback */
 216
 217                 if (option)
 218                 {
 219                         g_object_set_data_full(G_OBJECT(item), "option",
 220                                         g_strdup(option),
 221                                         g_free);
 222                         g_free(option);
 223                 }
 224
 225                 g_signal_connect(item, "activate", G_CALLBACK(apprun_menu),
 226                                 NULL);
 227         }
 228
 229         gtk_widget_show(item);
 230
 231         return item;
 232 }
 233
 234 /* Function called to execute an AppMenu item */
 235 static void apprun_menu(GtkWidget *item, gpointer data)
 236 {
 237         guchar  *option;
 238         gchar *argv[3];
 239
 240         g_return_if_fail(current_app_path != NULL);
 241
 242         option = g_object_get_data(G_OBJECT(item), "option");
 243
 244         argv[0] = g_strconcat(current_app_path, "/AppRun", NULL);
 245         argv[1] = option;       /* (may be NULL) */
 246         argv[2] = NULL;
 247
 248         rox_spawn(NULL, (const gchar **) argv);
 249
 250         g_free(argv[0]);
 251 }