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

   1 #include <glib.h>
   2
   3 #include "kernel/menu.h"
   4 #include "kernel/timer.h"
   5 #include "timed_menu.h"
   6 #include "kernel/action.h"
   7
   8 #define TIMED_MENU(m) ((Menu *)m)
   9 #define TIMED_MENU_DATA(m) ((Timed_Menu_Data *)((Menu *)m)->plugin_data)
  10 static char *PLUGIN_NAME = "timed_menu";
  11
  12 typedef enum {
  13     TIMED_MENU_PIPE
  14 } Timed_Menu_Type;
  15
  16 /* we can use various GIO channels to support reading menus (can we add them to
  17    the event loop? )
  18    stat() based update
  19    exec() based read
  20 */
  21 typedef struct {
  22     Timed_Menu_Type type;
  23     Timer *timer; /* timer code handles free */
  24     char *command; /* for the PIPE */
  25 } Timed_Menu_Data;
  26
  27
  28 void plugin_setup_config() { }
  29 void plugin_startup()
  30 { }
  31 void plugin_shutdown() { }
  32
  33 void timed_menu_timeout_handler(void *data)
  34 {
  35     Action *a;
  36     ((Menu *)data)->invalid = TRUE;
  37
  38     if (!TIMED_MENU(data)->shown) {
  39         switch (TIMED_MENU_DATA(data)->type) {
  40             case (TIMED_MENU_PIPE):
  41             {
  42                 /* if the menu is not shown, run a process and use its output
  43                    as menu */
  44                 char *args[] = {"/bin/sh", "-c", TIMED_MENU_DATA(data)->command,
  45                                 NULL};
  46                 GIOChannel *io;
  47                 char *line;
  48                 gint child, c_stdout, line_len, terminator_pos;
  49                 GIOStatus status;
  50                 /* this blocks for now, until the event stuff can handle it */
  51                 if (!g_spawn_async_with_pipes(NULL,
  52                         args,
  53                         NULL,
  54                         G_SPAWN_DO_NOT_REAP_CHILD,
  55                         NULL, NULL,
  56                         &child, NULL, &c_stdout, NULL,
  57                         NULL)) {
  58                     g_warning("%s: Unable to run timed_menu program",
  59                         __FUNCTION__);
  60                     break;
  61                 }
  62
  63                 io = g_io_channel_unix_new(c_stdout);
  64                 if (io == NULL) {
  65                     g_error("%s: Unable to get IO channel", __FUNCTION__);
  66                     break;
  67                 }
  68
  69                 menu_clear(TIMED_MENU(data));
  70
  71                 while ( G_IO_STATUS_NORMAL == (status =
  72                             g_io_channel_read_line
  73                             (io, &line, &line_len, &terminator_pos, NULL))
  74                     ) {
  75                     /* the \n looks ugly */
  76                     line[terminator_pos] = '\0';
  77                     menu_add_entry(TIMED_MENU(data),
  78                         menu_entry_new_separator(line));
  79                     g_message("%s", line);
  80                     g_free(line);
  81                 }
  82                 break;
  83             }
  84         }
  85     }
  86 }
  87
  88 void *plugin_create()
  89 {
  90     Timed_Menu_Data *d = g_new(Timed_Menu_Data, 1);
  91     Menu *m = menu_new("", PLUGIN_NAME, NULL);
  92
  93     m->plugin = PLUGIN_NAME;
  94
  95     d->type = TIMED_MENU_PIPE;
  96     d->timer = timer_start(1000000, &timed_menu_timeout_handler, m);
  97     d->command = "ls";
  98
  99     m->plugin_data = (void *)d;
 100
 101     return (void *)m;
 102 }
 103
 104 void plugin_destroy (void *m)
 105 {
 106     /* this will be freed by timer_* */
 107     timer_stop( ((Timed_Menu_Data *)TIMED_MENU(m)->plugin_data)->timer);
 108
 109     g_free( TIMED_MENU(m)->plugin_data );
 110 }