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798f67f01d
Not getting carried away with this -- frogmouth exists after all -- but allowing passing a different file on the command line does make it easier to quickly test the Markdown widget.
51 lines
1.3 KiB
Python
51 lines
1.3 KiB
Python
from pathlib import Path
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from sys import argv
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from textual.app import App, ComposeResult
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from textual.reactive import var
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from textual.widgets import Footer, MarkdownViewer
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class MarkdownApp(App):
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BINDINGS = [
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("t", "toggle_table_of_contents", "TOC"),
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("b", "back", "Back"),
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("f", "forward", "Forward"),
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]
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path = var(Path(__file__).parent / "demo.md")
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@property
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def markdown_viewer(self) -> MarkdownViewer:
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"""Get the Markdown widget."""
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return self.query_one(MarkdownViewer)
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def compose(self) -> ComposeResult:
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yield Footer()
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yield MarkdownViewer()
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async def on_mount(self) -> None:
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self.markdown_viewer.focus()
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try:
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await self.markdown_viewer.go(self.path)
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except FileNotFoundError:
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self.exit(message=f"Unable to load {self.path!r}")
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def action_toggle_table_of_contents(self) -> None:
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self.markdown_viewer.show_table_of_contents = (
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not self.markdown_viewer.show_table_of_contents
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)
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async def action_back(self) -> None:
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await self.markdown_viewer.back()
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async def action_forward(self) -> None:
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await self.markdown_viewer.forward()
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if __name__ == "__main__":
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app = MarkdownApp()
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if len(argv) > 1 and Path(argv[1]).exists():
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app.path = Path(argv[1])
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app.run()
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