[anjuta] language-support-vala: don't assert a Document is always an Editor

[Johannes Schmid <jhs src gnome org>]

commit 03206be64071431c5a1367a56d9c73cd80cbcf42
Author: Abderrahim Kitouni <akitouni src gnome org>
Date:   Fri Feb 4 21:09:16 2011 +0100

    language-support-vala: don't assert a Document is always an Editor
    
    this is obviously false for a glade document.

 plugins/language-support-vala/plugin.vala |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/plugins/language-support-vala/plugin.vala b/plugins/language-support-vala/plugin.vala
index a4489fa..a457e53 100644
--- a/plugins/language-support-vala/plugin.vala
+++ b/plugins/language-support-vala/plugin.vala
@@ -174,7 +174,10 @@ public class ValaPlugin : Plugin {
 	public void editor_value_added (Anjuta.Plugin plugin, string name, Value value) {
 		debug("editor value added");
 		assert (current_editor == null);
-		assert (value.get_object() is IAnjuta.Editor);
+		if (!(value.get_object() is IAnjuta.Editor)) {
+			/* a glade document, for example, isn't an editor */
+			return;
+		}
 
 		current_editor = value.get_object() as IAnjuta.Editor;
 		var current_file = value.get_object() as IAnjuta.File;