Add info text when no search results are found

assets/javascripts/app/searcher.coffee

@@ -42,6 +42,7 @@ class app.Searcher
 
   end: ->
     @triggerResults [] unless @totalResults
+    @trigger 'end'
     @free()
     return
 

assets/javascripts/templates/sidebar_tmpl.coffee

@@ -17,6 +17,12 @@ templates.sidebarEntry = (entry) ->
 templates.sidebarResult = (entry) ->
   """<a href="#{entry.fullPath()}" class="_list-item _list-hover _list-result _icon-#{entry.doc.slug}"><span class="_list-reveal" data-reset-list title="Reveal in list"></span>#{$.escape entry.name}</a>"""
 
+templates.sidebarNoResults = ->
+  info = if app.isSingleDoc() or app.disabledDocs.isEmpty() then '' else """
+    <span class="_list-noresults-note">Note: documentations must be <a class="_list-noresults-link" data-pick-docs>enabled</a> before they appear in the search.</span>
+  """
+  """ <div class="_list-noresults">No results. #{info}</div> """
+
 templates.sidebarPageLink = (count) ->
   """<span class="_list-item _list-pagelink">Show more\u2026 (#{count})</span>"""
 

assets/javascripts/views/search/search.coffee

@@ -25,7 +25,9 @@ class app.views.Search extends app.View
     @addSubview @scope = new app.views.SearchScope @el
 
     @searcher = new app.Searcher
-    @searcher.on 'results', @onResults
+    @searcher
+      .on 'results', @onResults
+      .on 'end', @onEnd
 
     app.on 'ready', @onReady
     $.on window, 'hashchange', @searchUrl
@@ -66,6 +68,7 @@ class app.views.Search extends app.View
     @addClass @constructor.activeClass
     @trigger 'searching'
 
+    @hasResults = null
     @flags = urlSearch: url, initialResults: true
     @searcher.find @scope.getScope().entries.all(), 'text', @value
     return
@@ -90,10 +93,15 @@ class app.views.Search extends app.View
     return
 
   onResults: (results) =>
+    @hasResults = true if results.length
     @trigger 'results', results, @flags
     @flags.initialResults = false
     return
 
+  onEnd: =>
+    @trigger 'noresults' unless @hasResults
+    return
+
   onClick: (event) =>
     if event.target is @resetLink
       $.stopEvent(event)

assets/javascripts/views/sidebar/results.coffee

@@ -17,6 +17,7 @@ class app.views.Results extends app.View
 
     @search
       .on 'results', @onResults
+      .on 'noresults', @onNoResults
       .on 'clear', @onClear
     return
 
@@ -28,6 +29,10 @@ class app.views.Results extends app.View
       if flags.urlSearch then @openFirst() else @focusFirst()
     return
 
+  onNoResults: =>
+    @html @tmpl('sidebarNoResults')
+    return
+
   onClear: =>
     @empty()
     return

assets/stylesheets/components/_sidebar.scss

@@ -229,6 +229,20 @@
   }
 }
 
+._list-noresults {
+  padding: .625rem .75rem;
+  line-height: 1.25rem;
+  font-size: .8125rem;
+  color: $textColorLight;
+}
+
+._list-noresults-note {
+  display: block;
+  margin-top: .375rem;
+}
+
+._list-noresults-link { cursor: pointer; }
+
 //
 // List hover clone
 //