init

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/vim,python
+# Edit at https://www.toptal.com/developers/gitignore?templates=vim,python
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+### Vim ###
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
+# End of https://www.toptal.com/developers/gitignore/api/vim,python

__init__.py

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+from aqt.qt import *
+import json
+from anki import hooks
+from aqt import editor
+from aqt.webview import AnkiWebView
+from aqt.utils import showInfo
+from aqt.theme import theme_manager
+from aqt import addcards
+from aqt import gui_hooks
+from aqt import mw
+
+class Editor_Preview(object):
+
+    def addcards_hook(self, ac: addcards):
+        layout = ac.form.fieldsArea.layout()
+        ac.web_view = AnkiWebView(title="preview")
+        layout.addWidget(ac.web_view)
+        ac.web_view.stdHtml(
+            ac.mw.reviewer.revHtml(),
+            css=["css/reviewer.css"],
+            js=[
+                "js/mathjax.js",
+                "js/vendor/mathjax/tex-chtml.js",
+                "js/reviewer.js",
+            ],
+            context=ac,
+        )
+        note = ac.editor.note
+        if ac.editor.card:
+            ord = ac.editor.card.ord
+        else:
+            ord = 0
+        c = note.ephemeral_card()
+        a = ac.mw.prepare_card_text_for_display(c.answer())
+        a = gui_hooks.card_will_show(a, c, "clayoutAnswer")
+        bodyclass = theme_manager.body_classes_for_card_ord(c.ord, ac.mw.pm.night_mode())
+        ac.web_view.eval(f"_showAnswer({json.dumps(a)},'{bodyclass}');")
+        self.web_view = ac.web_view
+
+    def onedit_hook(self, note):
+        c = note.ephemeral_card()
+        a = mw.prepare_card_text_for_display(c.answer())
+        a = gui_hooks.card_will_show(a, c, "clayoutAnswer")
+        bodyclass = theme_manager.body_classes_for_card_ord(c.ord, mw.pm.night_mode())
+        self.web_view.eval(f"_showAnswer({json.dumps(a)},'{bodyclass}');")
+
+
+eprev = Editor_Preview()
+gui_hooks.add_cards_did_init.append(eprev.addcards_hook)
+gui_hooks.editor_did_fire_typing_timer.append(eprev.onedit_hook)