223 lines
6.6 KiB
Rust
223 lines
6.6 KiB
Rust
//! ## TextList
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//!
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//! `TextList` component renders a radio group
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/**
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* MIT License
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*
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* termscp - Copyright (c) 2021 Christian Visintin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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// locals
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use super::{Canvas, Component, InputEvent, Msg, Payload, Props, PropsBuilder};
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// ext
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use tui::{
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layout::{Corner, Rect},
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style::Style,
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text::{Span, Spans},
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widgets::{Block, BorderType, List, ListItem},
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};
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// -- state
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struct OwnStates {
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focus: bool,
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}
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impl Default for OwnStates {
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fn default() -> Self {
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OwnStates { focus: false }
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}
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}
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// -- component
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/// ## Table
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///
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/// Table is a table component. List n rows with n text span columns
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pub struct Table {
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props: Props,
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states: OwnStates,
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}
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impl Table {
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/// ### new
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///
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/// Instantiate a new Table component
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pub fn new(props: Props) -> Self {
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Table {
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props,
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states: OwnStates::default(),
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}
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}
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}
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impl Component for Table {
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/// ### render
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///
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/// Based on the current properties and states, renders a widget using the provided render engine in the provided Area
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/// If focused, cursor is also set (if supported by widget)
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#[cfg(not(tarpaulin_include))]
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fn render(&self, render: &mut Canvas, area: Rect) {
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// Make a Span
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if self.props.visible {
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let title: String = match self.props.texts.title.as_ref() {
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Some(t) => t.clone(),
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None => String::new(),
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};
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// Make list entries
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let list_items: Vec<ListItem> = match self.props.texts.table.as_ref() {
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None => Vec::new(),
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Some(table) => table
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.iter()
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.map(|row| {
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let columns: Vec<Span> = row
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.iter()
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.map(|col| {
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Span::styled(
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col.content.clone(),
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Style::default()
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.add_modifier(col.get_modifiers())
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.fg(col.fg)
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.bg(col.bg),
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)
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})
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.collect();
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ListItem::new(Spans::from(columns))
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})
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.collect(), // Make List item from TextSpan
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};
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// Make list
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render.render_widget(
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List::new(list_items)
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.block(
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Block::default()
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.borders(self.props.borders)
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.border_style(Style::default())
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.border_type(BorderType::Rounded)
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.title(title),
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)
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.start_corner(Corner::TopLeft),
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area,
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);
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}
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}
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/// ### update
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///
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/// Update component properties
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/// Properties should first be retrieved through `get_props` which creates a builder from
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/// existing properties and then edited before calling update.
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/// Returns a Msg to the view
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fn update(&mut self, props: Props) -> Msg {
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self.props = props;
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// Return None
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Msg::None
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}
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/// ### get_props
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///
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/// Returns a props builder starting from component properties.
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/// This returns a prop builder in order to make easier to create
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/// new properties for the element.
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fn get_props(&self) -> PropsBuilder {
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PropsBuilder::from(self.props.clone())
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}
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/// ### on
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///
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/// Handle input event and update internal states.
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/// Returns a Msg to the view.
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/// Returns always None, since cannot have any focus
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fn on(&mut self, ev: InputEvent) -> Msg {
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// Return key
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if let InputEvent::Key(key) = ev {
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Msg::OnKey(key)
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} else {
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Msg::None
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}
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}
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/// ### get_value
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///
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/// Get current value from component
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/// For this component returns always None
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fn get_value(&self) -> Payload {
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Payload::None
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}
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// -- events
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/// ### blur
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///
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/// Blur component
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fn blur(&mut self) {
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self.states.focus = false;
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}
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/// ### active
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///
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/// Active component
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fn active(&mut self) {
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self.states.focus = true;
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::ui::layout::props::{TableBuilder, TextParts, TextSpan};
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use crossterm::event::{KeyCode, KeyEvent};
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#[test]
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fn test_ui_layout_components_table() {
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let mut component: Table = Table::new(
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PropsBuilder::default()
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.with_texts(TextParts::table(
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Some(String::from("My data")),
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TableBuilder::default()
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.add_col(TextSpan::from("name"))
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.add_col(TextSpan::from("age"))
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.add_row()
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.add_col(TextSpan::from("omar"))
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.add_col(TextSpan::from("24"))
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.build(),
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))
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.build(),
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);
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// Focus
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assert_eq!(component.states.focus, false);
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component.active();
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assert_eq!(component.states.focus, true);
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component.blur();
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assert_eq!(component.states.focus, false);
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// Get value
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assert_eq!(component.get_value(), Payload::None);
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// Event
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assert_eq!(
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component.on(InputEvent::Key(KeyEvent::from(KeyCode::Delete))),
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Msg::OnKey(KeyEvent::from(KeyCode::Delete))
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);
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}
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}
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