Select input box on machine/distro/class pages

If there are no search results, focus the search input field and select
any text in it so that the user can just start typing a keyword
immediately.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

templates/layerindex/classes.html

@@ -75,3 +75,14 @@
 {% endautoescape %}
 
 {% endblock %}
+
+
+{% block scripts %}
+<script>
+    {% if not class_list %}
+    $(document).ready(function() {
+        $("#filter-form input:text").first().select().focus();
+    });
+    {% endif %}
+</script>
+{% endblock %}

templates/layerindex/distros.html

@@ -78,3 +78,14 @@
 {% endautoescape %}
 
 {% endblock %}
+
+
+{% block scripts %}
+<script>
+    {% if not distro_list %}
+    $(document).ready(function() {
+        $("#filter-form input:text").first().select().focus();
+    });
+    {% endif %}
+</script>
+{% endblock %}

templates/layerindex/machines.html

@@ -77,3 +77,14 @@
 {% endautoescape %}
 
 {% endblock %}
+
+
+{% block scripts %}
+<script>
+    {% if not machine_list %}
+    $(document).ready(function() {
+        $("#filter-form input:text").first().select().focus();
+    });
+    {% endif %}
+</script>
+{% endblock %}