[patch] fix LP #220312

["Gregory Petrosyan" <gregory petrosyan gmail com>]

Attached totally untested patch (probably) fixes
https://bugs.launchpad.net/ubuntu/+source/brasero/+bug/220312

As I see it, the problem is that label edit box is limited to 32
_characters_, not bytes.
This patch does 2 things:
- ensure that brasero_disc_option_dialog_get_default_label returns valid label
- make brasero_disc_option_dialog_set_label truncate long labels
  (I am not sure if g_utf8_find_prev_char-based approach is ok here)

Sorry for my poor English; any feedback is welcome.

-- 
Regards, Gregory.

Index: src/brasero-disc-option-dialog.c
===================================================================
--- src/brasero-disc-option-dialog.c	(revision 801)
+++ src/brasero-disc-option-dialog.c	(working copy)
@@ -163,11 +163,21 @@
 			title_str = brasero_volume_get_name (BRASERO_VOLUME (medium));
 		}
 
-		if (!title_str || title_str [0] == '\0')
+		if (!title_str || title_str [0] == '\0') {
 			title_str = g_strdup_printf (_("Data disc (%s)"), buffer);
+			if (strlen (title_str) > 32) {
+				strftime (buffer, sizeof (buffer), "%F", localtime (&t));
+				title_str = g_strdup_printf ("Data disc %s", buffer);
+			}
+		}
 	}
-	else if (source.type == BRASERO_TRACK_TYPE_AUDIO)
+	else if (source.type == BRASERO_TRACK_TYPE_AUDIO) {
 		title_str = g_strdup_printf (_("Audio disc (%s)"), buffer);
+		if (strlen (title_str) > 32) {
+			strftime (buffer, sizeof (buffer), "%F", localtime (&t));
+			title_str = g_strdup_printf ("Audio disc %s", buffer);
+		}
+	}
 
 	if (drive)
 		g_object_unref (drive);
@@ -178,12 +188,22 @@
 static void
 brasero_disc_option_dialog_set_label (BraseroDiscOptionDialog *dialog)
 {
+	gchar *delim;
 	const gchar *label;
 	BraseroDiscOptionDialogPrivate *priv;
 
 	priv = BRASERO_DISC_OPTION_DIALOG_PRIVATE (dialog);
 
 	label = gtk_entry_get_text (GTK_ENTRY (priv->label));
+	if (strlen (label) > 32) {
+		gdk_beep ();
+		delim = g_utf8_find_prev_char (label, label + 32);
+		if (delim) {
+			*delim = '\0';
+			gtk_entry_set_text (GTK_ENTRY (priv->label), label);
+		}
+	}
+
 	brasero_burn_session_set_label (priv->session, label);
 }
 
@@ -380,7 +400,7 @@
 
 /**
  * These functions are used to update the session according to the states
- * of the buttons and entry 
+ * of the buttons and entry
  */
 
 static void
@@ -845,10 +865,10 @@
 brasero_disc_option_dialog_new ()
 {
 	BraseroDiscOptionDialog *obj;
-	
+
 	obj = BRASERO_DISC_OPTION_DIALOG (g_object_new (BRASERO_TYPE_DISC_OPTION_DIALOG,
 							"title", _("Disc burning setup"),
 							NULL));
-	
+
 	return GTK_WIDGET (obj);
 }