Markdown

Added in version 0.11.0

A widget to display a Markdown document.

• Focusable
• Container

Tip

See MarkdownViewer for a widget that adds additional features such as a Table of Contents.

Example

The following example displays Markdown from a string.

Outputmarkdown.py

from textual.app import App, ComposeResult
from textual.widgets import Markdown

EXAMPLE_MARKDOWN = """\
# Markdown Document

This is an example of Textual's `Markdown` widget.

## Features

Markdown syntax and extensions are supported.

- Typography *emphasis*, **strong**, `inline code` etc.
- Headers
- Lists (bullet and ordered)
- Syntax highlighted code blocks
- Tables!
"""


class MarkdownExampleApp(App):
    def compose(self) -> ComposeResult:
        yield Markdown(EXAMPLE_MARKDOWN)


if __name__ == "__main__":
    app = MarkdownExampleApp()
    app.run()

Reactive Attributes

This widget has no reactive attributes.

Messages

• Markdown.TableOfContentsUpdated
• Markdown.TableOfContentsSelected
• Markdown.LinkClicked

Bindings

This widget has no bindings.

Component Classes

The markdown widget provides the following component classes:

These component classes target standard inline markdown styles. Changing these will potentially break the standard markdown formatting.

Class	Description
code_inline	Target text that is styled as inline code.
em	Target text that is emphasized inline.
s	Target text that is styled inline with strykethrough.
strong	Target text that is styled inline with strong.

See Also

• MarkdownViewer code reference

---

textual.widgets.Markdown class

def __init__(
    self,
    markdown=None,
    *,
    name=None,
    id=None,
    classes=None,
    parser_factory=None
):

Bases: Widget

Parameters

Name	Type	Description	Default
markdown	str | None	String containing Markdown or None to leave blank for now.	None
name	str | None	The name of the widget.	None
id	str | None	The ID of the widget in the DOM.	None
classes	str | None	The CSS classes of the widget.	None
parser_factory	Callable[[], MarkdownIt] | None	A factory function to return a configured MarkdownIt instance. If None, a "gfm-like" parser is used.	None

COMPONENT_CLASSES class-attribute instance-attribute

COMPONENT_CLASSES = {'em', 'strong', 's', 'code_inline'}

These component classes target standard inline markdown styles. Changing these will potentially break the standard markdown formatting.

Class	Description
code_inline	Target text that is styled as inline code.
em	Target text that is emphasized inline.
s	Target text that is styled inline with strykethrough.
strong	Target text that is styled inline with strong.

LinkClicked class

def __init__(self, markdown, href):

Bases: Message

A link in the document was clicked.

control property

control: Markdown

The Markdown widget containing the link clicked.

This is an alias for LinkClicked.markdown and is used by the on decorator.

href instance-attribute

href: str = href

The link that was selected.

markdown instance-attribute

markdown: Markdown = markdown

The Markdown widget containing the link clicked.

TableOfContentsSelected class

def __init__(self, markdown, block_id):

Bases: Message

An item in the TOC was selected.

block_id instance-attribute

block_id: str = block_id

ID of the block that was selected.

control property

control: Markdown

The Markdown widget where the selected item is.

This is an alias for TableOfContentsSelected.markdown and is used by the on decorator.

markdown instance-attribute

markdown: Markdown = markdown

The Markdown widget where the selected item is.

TableOfContentsUpdated class

def __init__(self, markdown, table_of_contents):

Bases: Message

The table of contents was updated.

control property

control: Markdown

The Markdown widget associated with the table of contents.

This is an alias for TableOfContentsUpdated.markdown and is used by the on decorator.

markdown instance-attribute

markdown: Markdown = markdown

The Markdown widget associated with the table of contents.

table_of_contents instance-attribute

table_of_contents: TableOfContentsType = table_of_contents

Table of contents.

goto_anchor method

def goto_anchor(self, anchor):

Try and find the given anchor in the current document.

Parameters

Name	Type	Description	Default
anchor	str	The anchor to try and find.	required

Note

The anchor is found by looking at all of the headings in the document and finding the first one whose slug matches the anchor.

Note that the slugging method used is similar to that found on GitHub.

Returns

Type	Description
bool	True when the anchor was found in the current document, False otherwise.

load async

def load(self, path):

Load a new Markdown document.

Parameters

Name	Type	Description	Default
path	Path	Path to the document.	required

Raises

Type	Description
OSError	If there was some form of error loading the document.

Note

The exceptions that can be raised by this method are all of those that can be raised by calling Path.read_text.

sanitize_location staticmethod

def sanitize_location(location):

Given a location, break out the path and any anchor.

Parameters

Name	Type	Description	Default
location	str	The location to sanitize.	required

Returns

Type	Description
Path	A tuple of the path to the location cleaned of any anchor, plus
str	the anchor (or an empty string if none was found).

unhandled_token method

def unhandled_token(self, token):

Process an unhandled token.

Parameters

Name	Type	Description	Default
token	Token	The token to handle.	required

Returns

Type	Description
MarkdownBlock | None	Either a widget to be added to the output, or None.

update method

def update(self, markdown):

Update the document with new Markdown.

Parameters

Name	Type	Description	Default
markdown	str	A string containing Markdown.	required

Returns

Type	Description
AwaitMount	An optionally awaitable object. Await this to ensure that all children have been mounted.