blast-results-view : display statusMessage to indicate if search is i…

…n progress, or returned 0 hits.

... handle the case of no result : in that case need to indicate that the search has completed.
display Searching... and if result returned, show table, or else No hits found.
blast-results-view.js : dataMatrix() : if data, set statusMessage according to cells.length.
blast-results-view.hbs : display statusMessage if defined.

frontend/app/components/panel/upload/blast-results-view.js

@@ -53,6 +53,8 @@ export default Component.extend({
   /** true means display the result rows as triangles - clickedFeatures. */
   viewFeaturesFlag : true,
 
+  statusMessage : 'Searching ...',
+
   /*--------------------------------------------------------------------------*/
 
   /** style of the div which contains the table.
@@ -74,6 +76,10 @@ export default Component.extend({
       .filter((row) => (row !== ''))
       .map((r) => r.split('\t')) :
       [];
+
+    if (data) {
+      this.set('statusMessage', (cells.length ? undefined : 'The search completed and returned 0 hits') );
+    }
     return cells;
   }),
   viewRow : computed('dataMatrix', 'viewFeaturesFlag', function () {

frontend/app/templates/components/panel/upload/blast-results-view.hbs

@@ -4,6 +4,12 @@
 
 {{!-- --------------------------------------------------------------------- --}}
 
+{{#if statusMessage}}
+  <div>{{statusMessage}}</div>
+{{/if}}
+
+{{!-- --------------------------------------------------------------------- --}}
+
 <div id={{search.tableId}} class="actual-row"  style={{this.containerStyle}}></div>
 
 {{!-- --------------------------------------------------------------------- --}}