Using IO objects

examples/download_screenshot.py

@@ -1,3 +1,4 @@
+import io
 from textual import on
 from textual.app import App, ComposeResult
 from textual.binding import Binding
@@ -15,8 +16,10 @@ class ScreenshotApp(App[None]):
         self.action_deliver_screenshot()
 
     def action_deliver_screenshot(self) -> None:
-        filename = self.save_screenshot("screenshot.svg")
-        self.deliver_text(filename)
+        screenshot_string = self.export_screenshot()
+        string_io = io.StringIO(screenshot_string)
+        print(isinstance(string_io, io.TextIOBase))
+        self.deliver_text(string_io)
 
 
 app = ScreenshotApp()

pyproject.toml

@@ -9,9 +9,9 @@ dependencies = [
     "aiohttp>=3.9.5",
     "aiohttp-jinja2>=1.6",
     "jinja2>=3.1.4",
-    "textual>=0.66.0",
     "msgpack>=1.0.8",
     "rich",
+    "textual[syntax] @ file:///Users/darrenburns/code/textual-serve/../textual",
 ]
 readme = "README.md"
 requires-python = ">= 3.8"

requirements-dev.lock

@@ -58,12 +58,15 @@ mdit-py-plugins==0.4.1
 mdurl==0.1.2
     # via markdown-it-py
 msgpack==1.0.8
+    # via textual
     # via textual-dev
     # via textual-serve
 msgpack-types==0.3.0
 multidict==6.0.5
     # via aiohttp
     # via yarl
+platformdirs==4.2.2
+    # via textual
 pygments==2.18.0
     # via rich
 rich==13.7.1
@@ -72,10 +75,15 @@ rich==13.7.1
 sniffio==1.3.1
     # via anyio
     # via httpx
-textual==0.76.0
+textual @ file:///Users/darrenburns/code/textual-serve/../textual
     # via textual-dev
     # via textual-serve
 textual-dev==1.5.1
+tree-sitter==0.20.4
+    # via textual
+    # via tree-sitter-languages
+tree-sitter-languages==1.10.2
+    # via textual
 typing-extensions==4.12.2
     # via anyio
     # via rich

requirements.lock

@@ -41,17 +41,25 @@ mdit-py-plugins==0.4.1
 mdurl==0.1.2
     # via markdown-it-py
 msgpack==1.0.8
+    # via textual
     # via textual-serve
 multidict==6.0.5
     # via aiohttp
     # via yarl
+platformdirs==4.2.2
+    # via textual
 pygments==2.18.0
     # via rich
 rich==13.7.1
     # via textual
     # via textual-serve
-textual==0.76.0
+textual @ file:///Users/darrenburns/code/textual-serve/../textual
     # via textual-serve
+tree-sitter==0.20.4
+    # via textual
+    # via tree-sitter-languages
+tree-sitter-languages==1.10.2
+    # via textual
 typing-extensions==4.12.2
     # via rich
     # via textual

src/textual_serve/download_manager.py

@@ -22,6 +22,9 @@ class Download:
     open_method: str
     mime_type: str
     encoding: str | None = None
+    """The encoding of the content.
+    Will be None if the content is binary.
+    """
     incoming_chunks: asyncio.Queue[bytes | None] = field(default_factory=asyncio.Queue)