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livebook
0.14.0-rc.1
0.19.8
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0.1.0
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lib/livebook_web/live/output/plain_text_component.ex
defmodule LivebookWeb.Output.PlainTextComponent do
use LivebookWeb, :live_component
@impl true
def mount(socket) do
{:ok,
socket
|> assign(initialized: false)
|> stream(:chunks, [])}
end
@impl true
def update(%{event: {:append, text}}, socket) do
{:ok, append_text(socket, text)}
end
def update(assigns, socket) do
{text, assigns} = Map.pop(assigns, :text)
socket = assign(socket, assigns)
if socket.assigns.initialized do
{:ok, socket}
else
{:ok,
socket
|> append_text(text)
|> assign(:initialized, true)}
end
end
defp append_text(socket, text) do
chunk = %{id: Livebook.Utils.random_long_id(), text: text}
stream_insert(socket, :chunks, chunk)
end
@impl true
def render(assigns) do
~H"""
<div
id={@id}
class="text-gray-700 whitespace-pre-wrap break-words"
phx-update="stream"
phx-no-format
><span
:for={{dom_id, chunk}<- @streams.chunks} id={dom_id}><%= chunk.text %></span></div>
"""
end
end