AHjjddlmZddlmZddlmZmZmZddlm Z m Z m Z erddl m Z Gdde Zy) ) annotations) TYPE_CHECKING) NULL_OFFSETRegionSize) ArrangeResultLayoutWidgetPlacement)WidgetcVeZdZdZdZ d ddZd dZ d dZy) StreamLayoutaA cut down version of the vertical layout. The stream layout is faster, but has a few limitations compared to the vertical layout. - All widgets are the full width (as if their widget is `1fr`). - All widgets have an effective height of `auto`. - `max-height` is supported, but only if it is a units value, all other extrema rules are ignored. - No absolute positioning. - No overlay: screen. - Layers are ignored. - Non TCSS styles are ignored. The primary use of `layout: stream` is for a long list of widgets in a scrolling container, such as what you might expect from a LLM chat-bot. The speed improvement will only be significant with a lot of child widgets, so stick to vertical layouts unless you see any slowdown. streamc |j||sgS|jj}t}t}g}|j } |dj } d} | jj} t} |D]}|j j}|j}|jj\}}|\}}}}| || kDr|n| z } |} |j||| |z |z}|jx}*|jr|t!|j"x}kr|n|}|j$x}*|jr|t!|j"x}kDr|n|}|j'|||| | ||zz || ||dddd| |z } |S)NrF) pre_layoutapp viewport_sizerr widthstylesmargintopr _base_stylesguttertotalsget_content_height max_heightis_cellsintvalue min_heightappend)selfparentchildrensizegreedyviewport_Region_WidgetPlacement placementsrfirst_child_stylesyprevious_margin null_offsetwidgetrr gutter_width gutter_heightrrightbottomleftheightrmax_height_valuermin_height_values N/root/tools/cai/cai_env/lib/python3.12/site-packages/textual/layouts/stream.pyarrangezStreamLayout.arrange!s $I::++*,.  %a[// ,3377! # F]]//F]]F*0--*>*> 'L-'- $C o-? BA$O))$%,:NO  %/// <ATATS9I9I5J!J!1K) %/// <ATATS9I9I5J!J!1K)    D!UdUl%;VD   KAG# Jc.|jjS)zGet the optimal content width by arranging children. Args: widget: The container widget. container: The container size. viewport: The viewport size. Returns: Width of the content. )scrollable_content_regionr)r!r. containerr&s r7get_content_widthzStreamLayout.get_content_widthZs//555r9c|jr3|jt|d}|jj}|Sd}|S)aGet the content height. Args: widget: The container widget. container: The container size. viewport: The viewport. width: The content width. Returns: Content height (in lines). r)_nodesr8r total_regionr4)r!r.r<r&r arrangementr4s r7rzStreamLayout.get_content_heightgsC == ..eQ8K --44F F r9N)T) r"r r#z list[Widget]r$rr%boolreturnr)r.r r<rr&rrCr) r.r r<rr&rrrrCr)__name__ __module__ __qualname____doc__namer8r=rr9r7r r su$ DRV77(47<@7JN7 7r 6)-9=FI r9r N) __future__rtypingrtextual.geometryrrrtextual.layoutrr r textual.widgetr r rIr9r7rOs+" 66AA%n6nr9