tools (common/template): new icon_from_client method:

this method is available from template, and returns the name of the icon to use according
to disco client data.

sat/tools/common/template.py

@@ -911,6 +911,21 @@ class Renderer(object):
                     '    <use href="#{name}"/>'
                     '</svg>\n'.format(name=name, cls=(" " + cls) if cls else ""))
 
+    def _icon_from_client(self, client):
+        """Get icon name to represent a disco client"""
+        if client is None:
+            return 'desktop'
+        elif 'pc' in client:
+            return 'desktop'
+        elif 'phone' in client:
+            return 'mobile'
+        elif 'web' in client:
+            return 'globe'
+        elif 'console' in client:
+            return 'terminal'
+        else:
+            return 'desktop'
+
     def render(self, template, site=None, theme=None, locale=C.DEFAULT_LOCALE,
                media_path="", css_files=None, css_inline=False, **kwargs):
         """Render a template
@@ -963,6 +978,7 @@ class Renderer(object):
 
         kwargs["icon_defs"] = self._icon_defs
         kwargs["icon"] = self._icon_use
+        kwargs["icon_from_client"] = self._icon_from_client
 
         if css_inline:
             css_contents = []