Real component blocks. Extract these. Listed in increasing order of expected difficulty.

poll_question

xmodule.poll_block:PollBlock

ResourceTemplates

EditingMixin

EmptyRawDataMixin

XmlMixin

XModuleMixin

XModuleToXBlockMixin

add_webpack_js_to_fragment

add_webpack_sass_to_fragment

shim_xmodule_js

JS couplings

Comprehensive theming (Sass)

Note: This is replaced by poll . New courses should not use the old poll_question block, but we must keep it in the platform for backwards compatibility with old content.

word_cloud

xmodule.word_cloud_block:WordCloudBlock

annotatable

xmodule.annotatable_block:AnnotatableBlock

lti

xmodule.lti_block:LTIBlock

Note: This is replaced by lti_consumer . New courses should not use the old lti block, but we must keep it in the platform for backwards compatibility with old content.

html, and variants

xmodule.html_block:HtmlBlock, and variants:

discussion

xmodule.discussion_block:DiscussionXBlock

Note: This is replaced by the new in-unit discussion feature. New courses should not use the discussion block, but we must keep it in the platform for backwards compatibility with old content.

problem

xmodule.capa_block:ProblemBlock

video, videoalpha

xmodule.video_block.video_block.VideoBlock

HTML variants. These are edx-platform-specific specific subclasses of HtmlBlock. Leave them in edx-platform, but change their superclass to the extracted HtmlBlock.

about

xmodule.html_block:AboutBlock

course_info

xmodule.html_block:CourseInfoBlock

static_tab

xmodule.html_block:StaticTabBlock

Template blocks. I don’t fully understand these, but Dave says they are very extractable. Need to follow up on this.

customtag

custom_tag_template

several custom tags:

• book

• discuss

• image

• slides

• videodev

xmodule.template_block:CustomTagBlock

xmodule.template_block:CustomTagTemplateBlock

xmodule.template_block:TranslateCustomTagBlock

Special case blocks. These should stay put in edx-platform.

hidden

error

wrapper

xmodule.hidden_block:HiddenBlock

xmodule.error_block:ErrorBlock

xmodule.wrapper_block:WrapperBlock

• Needs to stay in edx-platform

Structural blocks. Leave them alone for now. Long term, these will be replaced with Learning Core.

library

course

chapter

sequential

unit

vertical

xmodule.library_root_xblock:LibraryRoot

xmodule.course_block:CourseBlock

xmodule.seq_block:SectionBlock

xmodule.seq_block:SequenceBlock

xmodule.unit_block:UnitBlock

xmodule.vertical_block:VerticalBlock

• Not a focus for extraction because we’ll be re-implementing them in learning core.

Dynamic blocks. Leave them alone for now. Long term, these will be replaced with Learning Core.

split_test

conditional

library_content

randomize

xmodule.split_test_block:SplitTestBlock

xmodule.conditional_block:ConditionalBlock

xmodule.library_content_block:LibraryContentBlock

xmodule.randomize_block:RandomizeBlock

• Not a focus for extraction because we’ll be re-implementing them in learning core.

• .