[tracker/new-tracker-search-tool] Get rid of type warning and use a clear search result signal to indicate invalid search

[Jamie McCracken <jamiemcc src gnome org>]

commit 9283eb0db5a98da2e8a5c1d2f23f6dd864dd77d4
Author: Jamie McCracken <jamiemcc gnome org>
Date:   Mon Sep 21 23:57:22 2009 -0400

    Get rid of type warning and use a clear search result signal to indicate invalid search

 src/tracker-search-tool/tracker-query.gs       |   21 ++++++++++++---------
 src/tracker-search-tool/tracker-result-grid.gs |    3 +++
 2 files changed, 15 insertions(+), 9 deletions(-)
---
diff --git a/src/tracker-search-tool/tracker-query.gs b/src/tracker-search-tool/tracker-query.gs
index 3e90dc1..5696033 100644
--- a/src/tracker-search-tool/tracker-query.gs
+++ b/src/tracker-search-tool/tracker-query.gs
@@ -10,7 +10,8 @@ class TrackerQuery : Object
 
     tracker : Resources;
 
-    event SearchSettingsChanged ()    
+    event SearchSettingsChanged ()   
+    event ClearSearchResults () 
 
     prop SearchTerms : string
     prop Category : string
@@ -22,10 +23,15 @@ class TrackerQuery : Object
         Category = "All"
     
          self.notify += def (t, propety)
-            if propety.name is "SearchTerms" or propety.name is "Category" or  propety.name is "SortField" or propety.name is "Fields"
+            if propety.name is "Category" or  propety.name is "SortField" or propety.name is "Fields"
                 SearchSettingsChanged ()
-
-         
+            else 
+                if propety.name is "SearchTerms" 
+                    if SearchTerms is null or SearchTerms.length < 3    
+                        ClearSearchResults ()
+                    else 
+                        SearchSettingsChanged ()
+                        
 
     def Connect () : bool
         
@@ -43,13 +49,10 @@ class TrackerQuery : Object
     
         query : string
     
-        if SearchTerms is null or SearchTerms.length < 3
-            return null
-            
         if Category is null or Category is "All"    
-            query = "SELECT ?s WHERE { ?s fts:match \"%s*\"} limit 100 ".printf(SearchTerms)
+            query = "SELECT ?s WHERE { ?s fts:match \"%s\". ?s a nie:InformationElement } limit 100 ".printf(SearchTerms)
         else
-            query = "SELECT ?s WHERE { ?s fts:match \"%s*\". ?s a %s} limit 100 ".printf(SearchTerms, Category)   
+            query = "SELECT ?s WHERE { ?s fts:match \"%s\". ?s a %s} limit 100 ".printf(SearchTerms, Category)   
 
         // to do : add Fields, Category and SortField
         return tracker.SparqlQuery (query)
diff --git a/src/tracker-search-tool/tracker-result-grid.gs b/src/tracker-search-tool/tracker-result-grid.gs
index a5af1e0..fdf48f9 100644
--- a/src/tracker-search-tool/tracker-result-grid.gs
+++ b/src/tracker-search-tool/tracker-result-grid.gs
@@ -31,6 +31,9 @@ class TrackerResultGrid : ScrolledWindow
                 _query = value
                 _query.SearchSettingsChanged += def ()
                     RefreshQuery ()
+                _query.ClearSearchResults += def ()
+                    store.clear ()
+                        
 
     init