combine updates

examples/grid.py

@@ -6,7 +6,7 @@ class GridTest(App):
     async def on_mount(self) -> None:
         """Make a simple grid arrangement."""
 
-        grid = await self.view.dock_grid(edge="left", size=70, name="left")
+        grid = await self.view.dock_grid(edge="left",  name="left")
 
         grid.add_column(fraction=1, name="left", min_size=20)
         grid.add_column(size=30, name="center")

src/textual/layout.py

@@ -95,9 +95,6 @@ class Layout(ABC):
 
     def reset(self) -> None:
         self._cuts = None
-        # if self._require_update:
-        #     self.regions.clear()
-        #     self._layout_map = None
 
     def reflow(
         self, console: Console, width: int, height: int, scroll: Offset
@@ -176,6 +173,7 @@ class Layout(ABC):
                 yield widget, region.intersection(clip), region
 
     def get_offset(self, widget: Widget) -> Offset:
+        """Get the offset of a widget."""
         try:
             return self.map[widget].region.origin
         except KeyError:

src/textual/message.py

@@ -25,7 +25,7 @@ class Message:
     ]
 
     sender: MessageTarget
-    bubble: ClassVar[bool] = False
+    bubble: ClassVar[bool] = True
     verbosity: ClassVar[int] = 1
 
     def __init__(self, sender: MessageTarget) -> None:
@@ -47,7 +47,7 @@ class Message:
     def __rich_repr__(self) -> rich.repr.Result:
         yield self.sender
 
-    def __init_subclass__(cls, bubble: bool = False, verbosity: int = 1) -> None:
+    def __init_subclass__(cls, bubble: bool = True, verbosity: int = 1) -> None:
         super().__init_subclass__()
         cls.bubble = bubble
         cls.verbosity = verbosity

src/textual/messages.py

@@ -33,11 +33,11 @@ class UpdateMessage(Message, verbosity=3):
 @rich.repr.auto
 class LayoutMessage(Message, verbosity=3):
     def can_replace(self, message: Message) -> bool:
-        return isinstance(message, LayoutMessage)
+        return isinstance(message, (LayoutMessage, UpdateMessage))
 
 
 @rich.repr.auto
-class CursorMoveMessage(Message, bubble=True):
+class CursorMoveMessage(Message):
     def __init__(self, sender: MessagePump, line: int) -> None:
         self.line = line
         super().__init__(sender)

src/textual/view.py

@@ -90,18 +90,20 @@ class View(Widget):
         return super().check_layout() or self.layout.check_update()
 
     async def message_update(self, message: UpdateMessage) -> None:
-        message.stop()
+        if self.is_root_view:
-        widget = message.widget
+            message.stop()
-        assert isinstance(widget, Widget)
+            widget = message.widget
+            assert isinstance(widget, Widget)
 
-        display_update = self.root_view.layout.update_widget(self.console, widget)
+            display_update = self.layout.update_widget(self.console, widget)
-        if display_update is not None:
+            if display_update is not None:
-            self.app.display(display_update)
+                self.app.display(display_update)
 
     async def message_layout(self, message: LayoutMessage) -> None:
-        message.stop()
+        if self.is_root_view:
-        await self.root_view.refresh_layout()
+            message.stop()
-        self.app.refresh()
+            await self.refresh_layout()
+            self.app.refresh()
 
     async def mount(self, *anon_widgets: Widget, **widgets: Widget) -> None:
 

src/textual/views/_window_view.py

@@ -7,7 +7,7 @@ from ..geometry import Offset, Size
 from ..layouts.vertical import VerticalLayout
 from ..view import View
 from ..message import Message
-from ..messages import UpdateMessage
+from ..messages import UpdateMessage, LayoutMessage
 from ..widget import Widget
 from ..widgets import Static
 
@@ -49,11 +49,11 @@ class WindowView(View, layout=VerticalLayout):
 
     async def watch_scroll_x(self, value: int) -> None:
         self.layout.require_update()
-        self.refresh(layout=True)
+        self.refresh()
 
     async def watch_scroll_y(self, value: int) -> None:
         self.layout.require_update()
-        self.refresh(layout=True)
+        self.refresh()
 
     async def on_resize(self, event: events.Resize) -> None:
         await self.emit(WindowChange(self))

src/textual/widget.py

@@ -18,6 +18,7 @@ from rich.console import Console, RenderableType
 from rich.panel import Panel
 from rich.padding import Padding, PaddingDimensions
 from rich.pretty import Pretty
+from rich.segment import Segment
 from rich.style import Style
 from rich.styled import Styled
 from rich.text import TextType
@@ -282,6 +283,7 @@ class Widget(MessagePump):
 
     async def on_idle(self, event: events.Idle) -> None:
         if self.check_layout():
+            self.render_cache = None
             self.reset_check_repaint()
             self.reset_check_layout()
             await self.emit(LayoutMessage(self))