MA-725 responsive_ui indication on responsive xBlocks.

common/lib/capa/capa/capa_problem.py

@@ -527,6 +527,13 @@ class LoncapaProblem(object):
             log.warning("Could not find matching input for id: %s", input_id)
             return {}
 
+    @property
+    def has_responsive_ui(self):
+        """
+        Returns whether this capa problem has support for responsive UI.
+        """
+        return all(responder.has_responsive_ui for responder in self.responders.values())
+
     # ======= Private Methods Below ========
 
     def _process_includes(self):

common/lib/capa/capa/responsetypes.py

@@ -138,6 +138,11 @@ class LoncapaResponse(object):
     allowed_inputfields = []
     required_attributes = []
 
+    # Overridable field that specifies whether this capa response type has support for
+    # responsive UI, for rendering on devices of different sizes and shapes.
+    # By default, we set this to False, allowing subclasses to override as appropriate.
+    has_responsive_ui = False
+
     def __init__(self, xml, inputfields, context, system):
         """
         Init is passed the following arguments:
@@ -692,6 +697,7 @@ class ChoiceResponse(LoncapaResponse):
     max_inputfields = 1
     allowed_inputfields = ['checkboxgroup', 'radiogroup']
     correct_choices = None
+    has_responsive_ui = True
 
     def setup_response(self):
 
@@ -763,6 +769,7 @@ class MultipleChoiceResponse(LoncapaResponse):
     max_inputfields = 1
     allowed_inputfields = ['choicegroup']
     correct_choices = None
+    has_responsive_ui = True
 
     def setup_response(self):
         # call secondary setup for MultipleChoice questions, to set name
@@ -1084,6 +1091,7 @@ class OptionResponse(LoncapaResponse):
     hint_tag = 'optionhint'
     allowed_inputfields = ['optioninput']
     answer_fields = None
+    has_responsive_ui = True
 
     def setup_response(self):
         self.answer_fields = self.inputfields
@@ -1136,6 +1144,7 @@ class NumericalResponse(LoncapaResponse):
     allowed_inputfields = ['textline', 'formulaequationinput']
     required_attributes = ['answer']
     max_inputfields = 1
+    has_responsive_ui = True
 
     def __init__(self, *args, **kwargs):
         self.correct_answer = ''
@@ -1338,6 +1347,7 @@ class StringResponse(LoncapaResponse):
     required_attributes = ['answer']
     max_inputfields = 1
     correct_answer = []
+    has_responsive_ui = True
 
     def setup_response_backward(self):
         self.correct_answer = [

common/lib/xmodule/xmodule/capa_module.py

@@ -187,6 +187,13 @@ class CapaDescriptor(CapaFields, RawDescriptor):
         registered_tags = responsetypes.registry.registered_tags()
         return set([node.tag for node in tree.iter() if node.tag in registered_tags])
 
+    @property
+    def has_responsive_ui(self):
+        """
+        Returns whether this module has support for responsive UI.
+        """
+        return self.lcp.has_responsive_ui
+
     def index_dictionary(self):
         """
         Return dictionary prepared with module content and type for indexing.

common/lib/xmodule/xmodule/html_module.py

@@ -95,6 +95,7 @@ class HtmlDescriptor(HtmlFields, XmlDescriptor, EditingDescriptor):  # pylint: d
     module_class = HtmlModule
     filename_extension = "xml"
     template_dir_name = "html"
+    has_responsive_ui = True
 
     js = {'coffee': [resource_string(__name__, 'js/src/html/edit.coffee')]}
     js_module_name = "HTMLEditingDescriptor"