Merge pull request scala#4736 from gourlaysama/ticket/t9429

SI-9429 fix filtering in scaladoc after focusing on a package

Author: lrytz

src/scaladoc/scala/tools/nsc/doc/html/resource/lib/index.js

@@ -412,7 +412,17 @@ function textFilter() {
     var query = $("#textfilter input").attr("value") || '';
     var queryRegExp = compilePattern(query);
 
-    if ((typeof textFilter.lastQuery === "undefined") || (textFilter.lastQuery !== query)) {
+    // if we are filtering on types, then we have to display types
+    // ("display packages only" is not possible when filtering)
+    if (query !== "") {
+        kindFilter("all");
+    }
+
+    // Three things trigger a reload of the left pane list:
+    // typeof textFilter.lastQuery === "undefined" <-- first load, there is nothing yet in the left pane
+    // textFilter.lastQuery !== query              <-- the filter text has changed
+    // focusFilterState != null                    <-- a package has been "focused"
+    if ((typeof textFilter.lastQuery === "undefined") || (textFilter.lastQuery !== query) || (focusFilterState != null)) {
 
         textFilter.lastQuery = query;