Disable 'Show rankings' button when no rankings exist.

2 files changed, 21 insertions, 11 deletions

diff --git a/web/getstats/index.html b/web/getstats/index.html
index ede3ee5..43fb3e5 100644
--- a/web/getstats/index.html
+++ b/web/getstats/index.html
@@ -64,7 +64,11 @@
                 "criteria.<br /><br />The idea is to prioritize benchmarks " +
                 "that deserve attention (either because they reflect stable " +
                 "changes in Qt, or because they need to improve their own " +
-                "quality).");
+                "quality)." +
+                "<br /><br /><b>Note:</b> This action is enabled iff " +
+                "an 'R' is indicated for the snapshot of Context 1, " +
+                "thus indicating availability of rankings in the " +
+                "database.");
       </script>
     </td>
     <td id="max_rank_size_lead">Maximum size:
diff --git a/web/getstats/main.js b/web/getstats/main.js
index e5a1f65..d5a0b09 100644
--- a/web/getstats/main.js
+++ b/web/getstats/main.js
@@ -155,16 +155,21 @@ function updateActions() {
     url_stats1 += "&testcasefilter=" + testCaseFilter;
 
     // --- rankings ---
-    url_rankings = "rankings.shtml";
-    url_rankings += "?db=" + $('#database').val();
-    url_rankings += "&cmd=rankings";
-    url_rankings += "&host=" + encodeURIComponent(context1_["host"]);
-    url_rankings += "&platform=" + encodeURIComponent(context1_["platform"]);
-    url_rankings += "&branch=" + encodeURIComponent(context1_["branch"]);
-    url_rankings += "&sha1=" + context1_["sha1"];
-    url_rankings += "&maxsize=" + $("#max_rank_size option:selected").val();
-    // ### Test case filter unsupported for now:
-    //url_rankings += "&testcasefilter=" + testCaseFilter;
+    if (context1_["rankingsExist"]) {
+        url_rankings = "rankings.shtml";
+        url_rankings += "?db=" + $('#database').val();
+        url_rankings += "&cmd=rankings";
+        url_rankings += "&host=" + encodeURIComponent(context1_["host"]);
+        url_rankings += "&platform=" +
+            encodeURIComponent(context1_["platform"]);
+        url_rankings += "&branch=" + encodeURIComponent(context1_["branch"]);
+        url_rankings += "&sha1=" + context1_["sha1"];
+        url_rankings += "&maxsize=" + $("#max_rank_size option:selected").val();
+        // ### Test case filter unsupported for now:
+        //url_rankings += "&testcasefilter=" + testCaseFilter;
+    } else {
+        url_rankings = "";
+    }
 
     // --- stats2 ---
     if (context2_["host"] != "") {
@@ -260,6 +265,7 @@ function context1() {
     var snapshot = tr.find("select[name = 'snapshot'] option:selected");
     context["sha1"] = snapshot.attr("value");
     context["snapshotIndex"] = snapshot.index();
+    context["rankingsExist"] = (snapshot.attr("text")[0] == 'R');
 
     return context;
 }