version bump, post, added --screenshot options to console run

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [0.11.0] - Unreleased
+## [0.11.0] - 2023-02-15
 
 ### Added
 

docs/blog/posts/release0-11-0.md

@@ -0,0 +1,48 @@
+---
+draft: false
+date: 2023-02-15
+categories:
+  - Release
+title: "version-0110"
+authors:
+  - willmcgugan
+---
+
+# Textual 0.11.0 adds a beautiful Markdown widget
+
+We released Textual 0.10.0 25 days ago, which is a little longer than our usual release cycle. What have we been up to?
+
+<!-- more -->
+
+The headline feature of this release is the enhanced Markdown support. Here's a screenshot of an example:
+
+<div>
+--8<-- "docs/blog/images/markdown-viewer.svg"
+</div>
+
+There are actually 2 new widgets: [Markdown](./../../widgets/markdown.md) for a simple Markdown document, and [MarkdownViewer](./../../widgets/markdown_viewer.md) which adds browser-like navigation and a table of contents.
+
+Textual has had support for Markdown since day one by embedding a Rich [Markdown](https://rich.readthedocs.io/en/latest/markdown.html) object (which still gives decent results)! This new widget adds dynamic controls such as scrollable code fences and tables, in addition to working links.
+
+In future releases I see us adding various Markdown extensions and the ability to easily embed custom widgets within the document. I'm sure there are plenty of interesting applications that could be powered by building a Markdown file with embedded widgets.
+
+## DataTable improvements
+
+There has been a lot of work on the [DataTable](../../widgets/data_table.md) widget API. We've added the ability to sort the data, which required that we introduce the concept of row and column keys. You can now reference rows / columns / cells by their coordinate or by row / column key.
+
+## Tree control
+
+The [Tree](../../api/tree.md) widget has grown a few methods to programmatically expand, collapse and toggle tree nodes.
+
+## Breaking changes
+
+There are a few breaking changes in this release. These are mostly naming and import related, which should be easy to fix if you are affected. Here's a few notable examples:
+
+- `Checkbox` has been renamed to `Switch`. This is because we plan to introduce complimentary `Checkbox` and `RadioButton` widgets in a future release, but we loved the look of *Switches* too much to drop them.
+- We've dropped the `emit` and `emit_no_wait` methods. These methods posted message to the parent widget, but we found that made it problematic to subclass widgets. In almost all situations you want to replace these with `self.post_message` (or `self.post_message_no_wait`).
+
+Be sure to check the [CHANGELOG](https://github.com/Textualize/textual/blob/main/CHANGELOG.md) for the full details on potential breaking changes.
+
+## Join us!
+
+We're having fun on our [Discord server](https://discord.gg/Enf6Z3qhVr). Join us there to talk to Textualize developers and share ideas.

examples/markdown.py

@@ -1,4 +1,5 @@
 from textual.app import App, ComposeResult
+from textual.binding import Binding
 from textual.reactive import var
 from textual.widgets import Footer, MarkdownViewer
 
@@ -8,6 +9,7 @@ class MarkdownApp(App):
         ("t", "toggle_table_of_contents", "TOC"),
         ("b", "back", "Back"),
         ("f", "forward", "Forward"),
+        Binding("s", "screenshot", "Screenshot", show=False),
     ]
 
     path = var("demo.md")

src/textual/cli/cli.py

@@ -47,7 +47,14 @@ def console(verbose: bool, exclude: list[str]) -> None:
 @click.argument("import_name", metavar="FILE or FILE:APP")
 @click.option("--dev", "dev", help="Enable development mode", is_flag=True)
 @click.option("--press", "press", help="Comma separated keys to simulate press")
-def run_app(import_name: str, dev: bool, press: str) -> None:
+@click.option(
+    "--screenshot",
+    type=int,
+    default=None,
+    metavar="DELAY",
+    help="Take screenshot after DELAY seconds",
+)
+def run_app(import_name: str, dev: bool, press: str, screenshot: int | None) -> None:
     """Run a Textual app.
 
     The code to run may be given as a path (ending with .py) or as a Python
@@ -73,6 +80,7 @@ def run_app(import_name: str, dev: bool, press: str) -> None:
 
     import os
     import sys
+    from asyncio import sleep
 
     from textual.features import parse_features
 
@@ -96,6 +104,10 @@ def run_app(import_name: str, dev: bool, press: str) -> None:
     async def run_press_keys(pilot: Pilot) -> None:
         if press_keys is not None:
             await pilot.press(*press_keys)
+        if screenshot is not None:
+            await sleep(screenshot)
+            filename = pilot.app.save_screenshot()
+            pilot.app.exit(message=f"Saved {filename!r}")
 
     result = app.run(auto_pilot=run_press_keys)