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"""Collapsible code."""
import xml.etree.ElementTree as etree
from markdown import util as mutil
import re
from pymdownx.blocks.block import Block
from pymdownx.blocks import BlocksExtension
# Fenced block placeholder for SuperFences
FENCED_BLOCK_RE = re.compile(
r'^([\> ]*){}({}){}$'.format(
mutil.HTML_PLACEHOLDER[0],
mutil.HTML_PLACEHOLDER[1:-1] % r'([0-9]+)',
mutil.HTML_PLACEHOLDER[-1]
)
)
class CollapseCode(Block):
"""Collapse code."""
NAME = 'collapse-code'
def on_init(self):
"""Handle initialization."""
# Track tab group count across the entire page.
if 'collapse_code_count' not in self.tracker:
self.tracker['collapse_code_count'] = 0
self.expand = self.config['expand_text']
if not isinstance(self.expand, str):
raise ValueError("'expand_text' must be a string")
self.collapse = self.config['collapse_text']
if not isinstance(self.collapse, str):
raise ValueError("'collapse_text' must be a string")
self.expand_title = self.config['expand_title']
if not isinstance(self.expand_title, str):
raise ValueError("'expand_title' must be a string")
self.collapse_title = self.config['collapse_title']
if not isinstance(self.collapse_title, str):
raise ValueError("'collapse_title' must be a string")
def on_create(self, parent):
"""Create the element."""
self.count = self.tracker['collapse_code_count']
self.tracker['collapse_code_count'] += 1
el = etree.SubElement(parent, 'div', {'class': 'collapse-code'})
etree.SubElement(
el,
'input',
{
"type": "checkbox",
"id": f"__collapse{self.count}",
"name": f"__collapse{self.count}",
'checked': 'checked'
}
)
return el
def on_end(self, block):
"""Convert non list items to details."""
el = etree.SubElement(block, 'div', {'class': 'code-footer'})
attrs = {'for': f'__collapse{self.count}', 'class': 'expand', 'tabindex': '0'}
if self.expand_title:
attrs['title'] = self.expand_title
expand = etree.SubElement(el, 'label', attrs)
expand.text = self.expand
attrs = {'for': f'__collapse{self.count}', 'class': 'collapse', 'tabindex': '0'}
if self.collapse_title:
attrs['title'] = self.collapse_title
collapse = etree.SubElement(el, 'label', attrs)
collapse.text = self.collapse
class CollapseCodeExtension(BlocksExtension):
"""Admonition Blocks Extension."""
def __init__(self, *args, **kwargs):
"""Initialize."""
self.config = {
'expand_text': ['Expand', "Set the text for the expand button."],
'collapse_text': ['Collapse', "Set the text for the collapse button."],
'expand_title': ['expand', "Set the text for the expand title."],
'collapse_title': ['collapse', "Set the text for the collapse title."]
}
super().__init__(*args, **kwargs)
def extendMarkdownBlocks(self, md, blocks):
"""Extend Markdown blocks."""
blocks.register(CollapseCode, self.getConfigs())
def makeExtension(*args, **kwargs):
"""Return extension."""
return CollapseCodeExtension(*args, **kwargs)
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