Add an XBlock student_view to XModule

This just wraps XModule.get_html, and ignores javascript and css for
now.

[LMS-189]

common/lib/xmodule/xmodule/gst_module.py

@@ -19,10 +19,45 @@ from xblock.core import String, Scope
 
 log = logging.getLogger(__name__)
 
+DEFAULT_RENDER="""
+    <h2>Graphic slider tool: Dynamic range and implicit functions.</h2>
+
+    <p>You can make the range of the x axis (but not ticks of x axis) of
+      functions depend on a parameter value. This can be useful when the
+      function domain needs to be variable.</p>
+    <p>Implicit functions like a circle can be plotted as 2 separate
+        functions of the same color.</p>
+     <div style="height:50px;">
+     <slider var='r' style="width:400px;float:left;"/>
+     <textbox var='r' style="float:left;width:60px;margin-left:15px;"/>
+   </div>
+    <plot style="margin-top:15px;margin-bottom:15px;"/>
+"""
+DEFAULT_CONFIGURATION="""
+    <parameters>
+        <param var="r" min="5" max="25" step="0.5" initial="12.5" />
+    </parameters>
+    <functions>
+      <function color="red">Math.sqrt(r * r - x * x)</function>
+      <function color="red">-Math.sqrt(r * r - x * x)</function>
+    </functions>
+    <plot>
+      <xrange>
+        <!-- dynamic range -->
+          <min>-r</min>
+          <max>r</max>
+      </xrange>
+      <num_points>1000</num_points>
+      <xticks>-30, 6, 30</xticks>
+      <yticks>-30, 6, 30</yticks>
+    </plot>
+"""
+
+
 
 class GraphicalSliderToolFields(object):
-    render = String(scope=Scope.content)
-    configuration = String(scope=Scope.content)
+    render = String(scope=Scope.content, default=DEFAULT_RENDER)
+    configuration = String(scope=Scope.content, default=DEFAULT_CONFIGURATION)
 
 
 class GraphicalSliderToolModule(GraphicalSliderToolFields, XModule):

common/lib/xmodule/xmodule/html_module.py

@@ -27,7 +27,7 @@ class HtmlFields(object):
         # use display_name_with_default for those
         default="Blank HTML Page"
     )
-    data = String(help="Html contents to display for this module", default="", scope=Scope.content)
+    data = String(help="Html contents to display for this module", default=u"", scope=Scope.content)
     source_code = String(help="Source code for LaTeX documents. This feature is not well-supported.", scope=Scope.settings)
 
 

common/lib/xmodule/xmodule/schematic_module.py

@@ -1,11 +0,0 @@
-
-from .x_module import XModule, XModuleDescriptor
-
-
-class ModuleDescriptor(XModuleDescriptor):
-    pass
-
-
-class Module(XModule):
-    def get_html(self):
-        return '<input type="hidden" class="schematic" name="{item_id}" height="480" width="640">'.format(item_id=self.item_id)

common/lib/xmodule/xmodule/tests/test_xblock_wrappers.py

@@ -0,0 +1,160 @@
+"""
+Tests for the wrapping layer that provides the XBlock API using XModule/Descriptor
+functionality
+"""
+
+from nose.tools import assert_equal
+from unittest.case import SkipTest
+from mock import Mock
+
+from xmodule.annotatable_module import AnnotatableDescriptor
+from xmodule.capa_module import CapaDescriptor
+from xmodule.course_module import CourseDescriptor
+from xmodule.combined_open_ended_module import CombinedOpenEndedDescriptor
+from xmodule.discussion_module import DiscussionDescriptor
+from xmodule.gst_module import GraphicalSliderToolDescriptor
+from xmodule.html_module import HtmlDescriptor
+from xmodule.peer_grading_module import PeerGradingDescriptor
+from xmodule.poll_module import PollDescriptor
+from xmodule.video_module import VideoDescriptor
+from xmodule.word_cloud_module import WordCloudDescriptor
+from xmodule.crowdsource_hinter import CrowdsourceHinterDescriptor
+from xmodule.videoalpha_module import VideoAlphaDescriptor
+from xmodule.seq_module import SequenceDescriptor
+from xmodule.conditional_module import ConditionalDescriptor
+from xmodule.randomize_module import RandomizeDescriptor
+from xmodule.vertical_module import VerticalDescriptor
+from xmodule.wrapper_module import WrapperDescriptor
+
+LEAF_XMODULES = (
+    AnnotatableDescriptor,
+    CapaDescriptor,
+    CombinedOpenEndedDescriptor,
+    DiscussionDescriptor,
+    GraphicalSliderToolDescriptor,
+    HtmlDescriptor,
+    PeerGradingDescriptor,
+    PollDescriptor,
+    VideoDescriptor,
+    # This is being excluded because it has dependencies on django
+    #VideoAlphaDescriptor,
+    WordCloudDescriptor,
+)
+
+
+CONTAINER_XMODULES = (
+    CrowdsourceHinterDescriptor,
+    CourseDescriptor,
+    SequenceDescriptor,
+    ConditionalDescriptor,
+    RandomizeDescriptor,
+    VerticalDescriptor,
+    WrapperDescriptor,
+    CourseDescriptor,
+)
+
+
+class TestXBlockWrapper(object):
+
+    @property
+    def leaf_module_runtime(self):
+        runtime = Mock()
+        runtime.render_template = lambda *args, **kwargs: unicode((args, kwargs))
+        runtime.anonymous_student_id = 'anonymous_student_id'
+        runtime.open_ended_grading_interface = {}
+        runtime.seed = 5
+        runtime.get = lambda x: getattr(runtime, x)
+        runtime.position = 2
+        runtime.ajax_url = 'ajax_url'
+        runtime.xblock_model_data = lambda d: d._model_data
+        return runtime
+
+    @property
+    def leaf_descriptor_runtime(self):
+        runtime = Mock()
+        runtime.render_template = lambda *args, **kwargs: unicode((args, kwargs))
+        return runtime
+
+    def leaf_descriptor(self, descriptor_cls):
+        return descriptor_cls(
+            self.leaf_descriptor_runtime,
+            {'location': 'i4x://org/course/catagory/name'}
+        )
+
+    def leaf_module(self, descriptor_cls):
+        return self.leaf_descriptor(descriptor_cls).xmodule(self.leaf_module_runtime)
+
+    def container_module_runtime(self, depth):
+        runtime = self.leaf_module_runtime
+        if depth == 0:
+            runtime.get_module.side_effect = lambda x: self.leaf_module(HtmlDescriptor)
+        else:
+            runtime.get_module.side_effect = lambda x: self.container_module(VerticalDescriptor, depth-1)
+        return runtime
+
+    @property
+    def container_descriptor_runtime(self):
+        runtime = Mock()
+        runtime.render_template = lambda *args, **kwargs: unicode((args, kwargs))
+        return runtime
+
+    def container_descriptor(self, descriptor_cls):
+        return descriptor_cls(
+            self.container_descriptor_runtime,
+            {
+                'location': 'i4x://org/course/catagory/name',
+                'children': range(3)
+            }
+        )
+
+    def container_module(self, descriptor_cls, depth):
+        return self.container_descriptor(descriptor_cls).xmodule(self.container_module_runtime(depth))
+
+class TestStudentView(TestXBlockWrapper):
+
+    # Test that for all of the leaf XModule Descriptors,
+    # the student_view wrapper returns the same thing in its content
+    # as get_html returns
+    def test_student_view_leaf_node(self):
+        for descriptor_cls in LEAF_XMODULES:
+            yield self.check_student_view_leaf_node, descriptor_cls
+
+    # Check that when an xmodule is instantiated from descriptor_cls
+    # it generates the same thing from student_view that it does from get_html
+    def check_student_view_leaf_node(self, descriptor_cls):
+        xmodule = self.leaf_module(descriptor_cls)
+        assert_equal(xmodule.get_html(), xmodule.student_view(None).content)
+
+
+    # Test that for all container XModule Descriptors,
+    # their corresponding XModule renders the same thing using student_view
+    # as it does using get_html, under the following conditions:
+    # a) All of its descendents are xmodules
+    # b) Some of its descendents are xmodules and some are xblocks
+    # c) All of its descendents are xblocks
+    def test_student_view_container_node(self):
+        for descriptor_cls in CONTAINER_XMODULES:
+            yield self.check_student_view_container_node_xmodules_only, descriptor_cls
+            yield self.check_student_view_container_node_mixed, descriptor_cls
+            yield self.check_student_view_container_node_xblocks_only, descriptor_cls
+
+
+    # Check that when an xmodule is generated from descriptor_cls
+    # with only xmodule children, it generates the same html from student_view
+    # as it does using get_html
+    def check_student_view_container_node_xmodules_only(self, descriptor_cls):
+        xmodule = self.container_module(descriptor_cls, 2)
+        assert_equal(xmodule.get_html(), xmodule.student_view(None).content)
+
+    # Check that when an xmodule is generated from descriptor_cls
+    # with mixed xmodule and xblock children, it generates the same html from student_view
+    # as it does using get_html
+    def check_student_view_container_node_mixed(self, descriptor_cls):
+        raise SkipTest("XBlock support in XDescriptor not yet fully implemented")
+
+    # Check that when an xmodule is generated from descriptor_cls
+    # with only xblock children, it generates the same html from student_view
+    # as it does using get_html
+    def check_student_view_container_node_xblocks_only(self, descriptor_cls):
+        raise SkipTest("XBlock support in XModules not yet fully implemented")
+

common/lib/xmodule/xmodule/x_module.py

@@ -11,6 +11,7 @@ from xmodule.modulestore import inheritance, Location
 from xmodule.modulestore.exceptions import ItemNotFoundError, InsufficientSpecificationError, InvalidLocationError
 
 from xblock.core import XBlock, Scope, String, Integer, Float, ModelType
+from xblock.fragment import Fragment
 from xmodule.modulestore.locator import BlockUsageLocator
 
 log = logging.getLogger(__name__)
@@ -314,6 +315,19 @@ class XModule(XModuleFields, HTMLSnippet, XBlock):
         return ""
 
 
+    # ~~~~~~~~~~~~~~~ XBlock API Wrappers ~~~~~~~~~~~~~~~~
+    def student_view(self, context):
+        """
+        Return a fragment with the html from this XModule
+
+        Doesn't yet add any of the javascript to the fragment, nor the css.
+        Also doesn't expect any javascript binding, yet.
+
+        Makes no use of the context parameter
+        """
+        return Fragment(self.get_html())
+
+
 def policy_key(location):
     """
     Get the key for a location in a policy file.  (Since the policy file is
@@ -906,8 +920,8 @@ class ModuleSystem(object):
 
         publish(event) - A function that allows XModules to publish events (such as grade changes)
 
-        xblock_model_data - A dict-like object containing the all data available to this
-            xblock
+        xblock_model_data - A function that constructs a model_data for an xblock from its
+            corresponding descriptor
 
         cache - A cache object with two methods:
             .get(key) returns an object from the cache or None.

docs/source/xmodule.rst

@@ -109,13 +109,6 @@ Progress
     :members:
     :show-inheritance:
 
-Schematic
-=========
-
-.. automodule:: xmodule.schematic_module
-    :members:
-    :show-inheritance:
-
 Sequence
 ========