bitbake: toaster: commit id format on layers page

On the layers page, when a layer revision is a commit id instead of a
an upstream branch name, then follow the same format for displaying the
commit id as on the recipes page.  That format is a button with the
truncated commit SHAID which when pressed expands to the full SHAID.

[YOCTO #7191]

(Bitbake rev: 507d2a36e53ba2c1f49616d52e4700f6c1bca8fd)

Signed-off-by: Dave Lerner <dave.lerner@windriver.com>
Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastergui/templates/layers.html

@@ -52,12 +52,15 @@
                 {% endif %}
         </td>
             <td class="branch">
-                {% if o.branch %}
-                    {{o.branch}}
-                {% else %}
-                    {{o.up_branch.name}}
-                    <i class="icon-question-sign get-help hover-help" title="Your builds will use the tip of the branch you have cloned or downloaded to your computer, so nothing will be fetched"></i>
-                {% endif %}
+                {% with vcs_ref=o.get_vcs_reference %}
+                  {% if vcs_ref|is_shaid %}
+                    <a class="btn" data-content="<ul class='unstyled'> <li>{{vcs_ref}}</li> </ul>">
+                      {{vcs_ref|truncatechars:10}}
+                    </a>
+                  {% else %}
+                    {{vcs_ref}}
+                  {% endif %}
+                {% endwith %}
             </td>
             <td class="dependencies">
         {% with ods=o.dependencies.all%}

bitbake/lib/toaster/toastergui/templatetags/projecttags.py

@@ -295,3 +295,15 @@ def format_build_date(completed_on):
 
     if delta.days >= 1:
         return True
+
+@register.filter
+def is_shaid(text):
+    """ return True if text length is 40 characters and all hex-digits
+    """
+    try:
+        int(text, 16)
+        if len(text) == 40:
+            return True
+        return False
+    except ValueError:
+        return False