media-keys: Add ability to hard-code keys

This would be used for keys that we don't want to export
to the user-interface, such as some display or touchpad keys.

Taken from GSD commit: 37806fbb00087e44dd66a19efacd5eba4441bfc9
From: Bastien Nocera <[email protected]>

2 files changed, 28 insertions, 21 deletions

diff --git a/plugins/media-keys/acme.h b/plugins/media-keys/acme.h
index 17ce1ed..e7fddf7 100644
--- a/plugins/media-keys/acme.h
+++ b/plugins/media-keys/acme.h
@@ -54,27 +54,28 @@ enum {
 static struct {
         int key_type;
         const char *settings_key;
+        const char *hard_coded;
         Key *key;
 } keys[HANDLED_KEYS] = {
-        { TOUCHPAD_KEY, "touchpad", NULL },
-        { MUTE_KEY, "volume-mute",NULL },
-        { VOLUME_DOWN_KEY, "volume-down", NULL },
-        { VOLUME_UP_KEY, "volume-up", NULL },
-        { POWER_KEY, "power", NULL },
-        { EJECT_KEY, "eject", NULL },
-        { HOME_KEY, "home", NULL },
-        { MEDIA_KEY, "media", NULL },
-        { CALCULATOR_KEY, "calculator", NULL },
-        { SEARCH_KEY, "search", NULL },
-        { EMAIL_KEY, "email", NULL },
-        { SCREENSAVER_KEY, "screensaver", NULL },
-        { HELP_KEY, "help", NULL },
-        { WWW_KEY, "www", NULL },
-        { PLAY_KEY, "play", NULL },
-        { PAUSE_KEY, "pause", NULL },
-        { STOP_KEY, "stop", NULL },
-        { PREVIOUS_KEY, "previous", NULL },
-        { NEXT_KEY, "next", NULL },
+        { TOUCHPAD_KEY, "touchpad", NULL, NULL },
+        { MUTE_KEY, "volume-mute", NULL, NULL },
+        { VOLUME_DOWN_KEY, "volume-down", NULL, NULL },
+        { VOLUME_UP_KEY, "volume-up", NULL, NULL },
+        { POWER_KEY, "power", NULL, NULL },
+        { EJECT_KEY, "eject", NULL, NULL },
+        { HOME_KEY, "home", NULL, NULL },
+        { MEDIA_KEY, "media", NULL, NULL },
+        { CALCULATOR_KEY, "calculator", NULL, NULL },
+        { SEARCH_KEY, "search", NULL, NULL },
+        { EMAIL_KEY, "email", NULL, NULL },
+        { SCREENSAVER_KEY, "screensaver", NULL, NULL },
+        { HELP_KEY, "help", NULL, NULL },
+        { WWW_KEY, "www", NULL, NULL },
+        { PLAY_KEY, "play", NULL, NULL },
+        { PAUSE_KEY, "pause", NULL, NULL },
+        { STOP_KEY, "stop", NULL, NULL },
+        { PREVIOUS_KEY, "previous", NULL, NULL },
+        { NEXT_KEY, "next", NULL, NULL },
         { MAGNIFIER_KEY, "magnifier", NULL, NULL },
         { SCREENREADER_KEY, "screenreader", NULL, NULL },
         { ON_SCREEN_KEYBOARD_KEY, "on-screen-keyboard", NULL, NULL },
diff --git a/plugins/media-keys/msd-media-keys-manager.c b/plugins/media-keys/msd-media-keys-manager.c
index 7d4245e..0680818 100644
--- a/plugins/media-keys/msd-media-keys-manager.c
+++ b/plugins/media-keys/msd-media-keys-manager.c
@@ -286,6 +286,9 @@ update_kbd_cb (GSettings           *settings,
                         g_free (keys[i].key);
                         keys[i].key = NULL;
 
+                        /* We can't have a change in a hard-coded key */
+                        g_assert (keys[i].settings_key != NULL);
+
                         tmp = g_settings_get_string (settings,
                                                      keys[i].settings_key);
 
@@ -339,8 +342,11 @@ static void init_kbd(MsdMediaKeysManager* manager)
 						  manager);
 		g_free (signal_name);
 
-		tmp = g_settings_get_string (manager->priv->settings,
-			keys[i].settings_key);
+		if (keys[i].settings_key != NULL) {
+			tmp = g_settings_get_string (manager->priv->settings, keys[i].settings_key);
+		} else {
+			tmp = g_strdup (keys[i].hard_coded);
+		}
 
 		if (!is_valid_shortcut(tmp))
 		{