Frontend: Execute only selected query text

Earlier approach was to execute everything in the editor. With this new
approach, only selected text is treated as query and executed on the
server

static/js/app.js

@@ -1039,7 +1039,16 @@ function runQuery(editor) {
 
   $("#query_progress").show();
 
-  var query = $.trim(editor.getValue());
+  var query = ''; //$.trim(editor.getValue());
+
+  //Check if text is selected.
+  //If yes, then execute that selectionm only;
+
+  var selectedText = editor.session.getTextRange(editor.getSelectionRange());
+
+  if (selectedText.length > 0) {
+    query = selectedText;
+  }
 
   if (query.length === 0) {
     $("#query_progress").hide();