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lib/livebook_web/live/output/control_form_component.ex
defmodule LivebookWeb.Output.ControlFormComponent do
use LivebookWeb, :live_component
@impl true
def mount(socket) do
{:ok, assign(socket, data: %{})}
end
@impl true
def update(assigns, socket) do
prev_data = socket.assigns.data
socket = assign(socket, assigns)
data =
Map.new(assigns.control.attrs.fields, fn {field, input} ->
{field, assigns.input_views[input.id].value}
end)
if data != prev_data do
change_data =
for {field, value} <- data,
assigns.control.attrs.report_changes[field],
into: %{},
do: {field, value}
if change_data != %{} do
report_event(socket, %{type: :change, data: change_data})
end
end
{:ok, assign(socket, data: data)}
end
@impl true
def render(assigns) do
~H"""
<div class="flex flex-col space-y-3">
<.live_component
:for={{_field, input} <- @control.attrs.fields}
module={LivebookWeb.Output.InputComponent}
id={"#{@id}-#{input.id}"}
input={input}
input_views={@input_views}
session_pid={@session_pid}
client_id={@client_id}
local={true}
/>
<div :if={@control.attrs.submit}>
<.button type="button" phx-click="submit" phx-target={@myself}>
<%= @control.attrs.submit %>
</.button>
</div>
</div>
"""
end
@impl true
def handle_event("submit", %{}, socket) do
report_event(socket, %{type: :submit, data: socket.assigns.data})
if socket.assigns.control.attrs.reset_on_submit do
reset_inputs(socket)
end
{:noreply, socket}
end
defp report_event(socket, attrs) do
topic = socket.assigns.control.ref
event = Map.merge(%{origin: socket.assigns.client_id}, attrs)
send(socket.assigns.control.destination, {:event, topic, event})
end
defp reset_inputs(socket) do
values =
for {field, input} <- socket.assigns.control.attrs.fields,
field in socket.assigns.control.attrs.reset_on_submit,
do: {input.id, input.attrs.default}
send(self(), {:set_input_values, values, true})
end
end