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gobang/src/components/table.rs

879 lines
29 KiB
Rust
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use super::{
utils::scroll_vertical::VerticalScroll, Component, DrawableComponent, EventState,
TableStatusComponent, TableValueComponent,
};
use crate::components::command::{self, CommandInfo};
use crate::config::KeyConfig;
use crate::event::Key;
use anyhow::Result;
use database_tree::{Database, Table as DTable};
use std::convert::From;
use tui::{
backend::Backend,
layout::{Constraint, Direction, Layout, Rect},
style::{Color, Modifier, Style},
widgets::{Block, Borders, Cell, Row, Table, TableState},
Frame,
};
use unicode_width::UnicodeWidthStr;
pub struct TableComponent {
pub headers: Vec<String>,
pub rows: Vec<Vec<String>>,
pub eod: bool,
pub selected_row: TableState,
table: Option<(Database, DTable)>,
selected_column: usize,
selection_area_corner: Option<(usize, usize)>,
column_page_start: std::cell::Cell<usize>,
scroll: VerticalScroll,
key_config: KeyConfig,
}
impl TableComponent {
pub fn new(key_config: KeyConfig) -> Self {
Self {
selected_row: TableState::default(),
headers: vec![],
rows: vec![],
table: None,
selected_column: 0,
selection_area_corner: None,
column_page_start: std::cell::Cell::new(0),
scroll: VerticalScroll::new(false, false),
eod: false,
key_config,
}
}
fn title(&self) -> String {
self.table.as_ref().map_or(" - ".to_string(), |table| {
format!("{}.{}", table.0.name, table.1.name)
})
}
pub fn update(
&mut self,
rows: Vec<Vec<String>>,
headers: Vec<String>,
database: Database,
table: DTable,
) {
self.selected_row.select(None);
if !rows.is_empty() {
self.selected_row.select(Some(0))
}
self.headers = headers;
self.rows = rows;
self.selected_column = 0;
self.selection_area_corner = None;
self.column_page_start = std::cell::Cell::new(0);
self.scroll = VerticalScroll::new(false, false);
self.eod = false;
self.table = Some((database, table));
}
pub fn reset(&mut self) {
self.selected_row.select(None);
self.headers = Vec::new();
self.rows = Vec::new();
self.selected_column = 0;
self.selection_area_corner = None;
self.column_page_start = std::cell::Cell::new(0);
self.scroll = VerticalScroll::new(false, false);
self.eod = false;
self.table = None;
}
fn reset_selection(&mut self) {
self.selection_area_corner = None;
}
pub fn end(&mut self) {
self.eod = true;
}
fn next_row(&mut self, lines: usize) {
let i = match self.selected_row.selected() {
Some(i) => {
if i + lines >= self.rows.len() {
Some(self.rows.len().saturating_sub(1))
} else {
Some(i + lines)
}
}
None => None,
};
self.reset_selection();
self.selected_row.select(i);
}
fn previous_row(&mut self, lines: usize) {
let i = match self.selected_row.selected() {
Some(i) => {
if i <= lines {
Some(0)
} else {
Some(i.saturating_sub(lines))
}
}
None => None,
};
self.reset_selection();
self.selected_row.select(i);
}
fn scroll_to_top(&mut self) {
if self.rows.is_empty() {
return;
}
self.reset_selection();
self.selected_row.select(Some(0));
}
fn scroll_to_bottom(&mut self) {
if self.rows.is_empty() {
return;
}
self.reset_selection();
self.selected_row
.select(Some(self.rows.len().saturating_sub(1)));
}
fn next_column(&mut self) {
if self.rows.is_empty() {
return;
}
self.reset_selection();
if self.selected_column >= self.headers.len().saturating_sub(1) {
return;
}
self.selected_column += 1;
}
fn previous_column(&mut self) {
if self.rows.is_empty() {
return;
}
self.reset_selection();
if self.selected_column == 0 {
return;
}
self.selected_column -= 1;
}
fn expand_selected_area_x(&mut self, positive: bool) {
if self.selection_area_corner.is_none() {
self.selection_area_corner = Some((
self.selected_column,
self.selected_row.selected().unwrap_or(0),
));
}
if let Some((x, y)) = self.selection_area_corner {
self.selection_area_corner = Some((
if positive {
(x + 1).min(self.headers.len().saturating_sub(1))
} else {
x.saturating_sub(1)
},
y,
));
}
}
fn expand_selected_area_y(&mut self, positive: bool) {
if self.selection_area_corner.is_none() {
self.selection_area_corner = Some((
self.selected_column,
self.selected_row.selected().unwrap_or(0),
));
}
if let Some((x, y)) = self.selection_area_corner {
self.selection_area_corner = Some((
x,
if positive {
(y + 1).min(self.rows.len().saturating_sub(1))
} else {
y.saturating_sub(1)
},
));
}
}
pub fn selected_cells(&self) -> Option<String> {
if let Some((x, y)) = self.selection_area_corner {
let selected_row_index = self.selected_row.selected()?;
return Some(
self.rows[y.min(selected_row_index)..y.max(selected_row_index) + 1]
.iter()
.map(|row| {
row[x.min(self.selected_column)..x.max(self.selected_column) + 1].join(",")
})
.collect::<Vec<String>>()
.join("\n"),
);
}
self.rows
.get(self.selected_row.selected()?)?
.get(self.selected_column)
.map(|cell| cell.to_string())
}
fn selected_column_index(&self) -> usize {
if let Some((x, _)) = self.selection_area_corner {
return x;
}
self.selected_column
}
fn is_selected_cell(
&self,
row_index: usize,
column_index: usize,
selected_column_index: usize,
) -> bool {
if let Some((x, y)) = self.selection_area_corner {
let x_in_page = x
.saturating_add(1)
.saturating_sub(self.column_page_start.get());
return matches!(
self.selected_row.selected(),
Some(selected_row_index)
if (x_in_page.min(selected_column_index).max(1)..x_in_page.max(selected_column_index) + 1)
.contains(&column_index)
&& (y.min(selected_row_index)..y.max(selected_row_index) + 1)
.contains(&row_index)
);
}
matches!(
self.selected_row.selected(),
Some(selected_row_index) if row_index == selected_row_index && column_index == selected_column_index
)
}
fn is_number_column(&self, row_index: usize, column_index: usize) -> bool {
matches!(
self.selected_row.selected(),
Some(selected_row_index) if row_index == selected_row_index && 0 == column_index
)
}
fn headers(&self, left: usize, right: usize) -> Vec<String> {
let mut headers = self.headers.clone()[left..right].to_vec();
headers.insert(0, "".to_string());
headers
}
fn rows(&self, left: usize, right: usize) -> Vec<Vec<String>> {
let rows = self
.rows
.iter()
.map(|row| row.to_vec())
.collect::<Vec<Vec<String>>>();
let mut new_rows: Vec<Vec<String>> =
rows.iter().map(|row| row[left..right].to_vec()).collect();
for (index, row) in new_rows.iter_mut().enumerate() {
row.insert(0, (index + 1).to_string())
}
new_rows
}
fn calculate_cell_widths(
&self,
area_width: u16,
) -> (usize, Vec<String>, Vec<Vec<String>>, Vec<Constraint>) {
if self.rows.is_empty() {
return (0, Vec::new(), Vec::new(), Vec::new());
}
if self.selected_column_index() < self.column_page_start.get() {
self.column_page_start.set(self.selected_column_index());
}
let far_right_column_index = self.selected_column_index();
let mut column_index = self.selected_column_index();
let number_column_width = (self.rows.len() + 1).to_string().width() as u16;
let mut widths = Vec::new();
loop {
let length = self
.rows
.iter()
.map(|row| {
row.get(column_index)
.map_or(String::new(), |cell| cell.to_string())
.width()
})
.collect::<Vec<usize>>()
.iter()
.max()
.map_or(3, |v| {
*v.max(
&self
.headers
.get(column_index)
.map_or(3, |header| header.to_string().width()),
)
.clamp(&3, &20)
});
if widths.iter().map(|(_, width)| width).sum::<usize>() + length + widths.len()
>= area_width.saturating_sub(number_column_width) as usize
{
column_index += 1;
break;
}
widths.push((self.headers[column_index].clone(), length));
if column_index == self.column_page_start.get() {
break;
}
column_index -= 1;
}
widths.reverse();
let far_left_column_index = column_index;
let selected_column_index = widths.len().saturating_sub(1);
let mut column_index = far_right_column_index + 1;
while widths.iter().map(|(_, width)| width).sum::<usize>() + widths.len()
<= area_width.saturating_sub(number_column_width) as usize
{
let length = self
.rows
.iter()
.map(|row| {
row.get(column_index)
.map_or(String::new(), |cell| cell.to_string())
.width()
})
.collect::<Vec<usize>>()
.iter()
.max()
.map_or(3, |v| {
*v.max(
self.headers
.iter()
.map(|header| header.to_string().width())
.collect::<Vec<usize>>()
.get(column_index)
.unwrap_or(&3),
)
.clamp(&3, &20)
});
match self.headers.get(column_index) {
Some(header) => {
widths.push((header.to_string(), length));
}
None => break,
}
column_index += 1
}
if self.selected_column_index() != self.headers.len().saturating_sub(1)
&& column_index.saturating_sub(1) != self.headers.len().saturating_sub(1)
{
widths.pop();
}
let far_right_column_index = column_index;
let mut constraints = widths
.iter()
.map(|(_, width)| Constraint::Length(*width as u16))
.collect::<Vec<Constraint>>();
if self.selected_column_index() != self.headers.len().saturating_sub(1)
&& column_index.saturating_sub(1) != self.headers.len().saturating_sub(1)
{
constraints.push(Constraint::Min(10));
}
constraints.insert(0, Constraint::Length(number_column_width));
self.column_page_start.set(far_left_column_index);
(
self.selection_area_corner
.map_or(selected_column_index + 1, |(x, _)| {
if x > self.selected_column {
(selected_column_index + 1)
.saturating_sub(x.saturating_sub(self.selected_column))
} else {
(selected_column_index + 1)
.saturating_add(self.selected_column.saturating_sub(x))
}
}),
self.headers(far_left_column_index, far_right_column_index),
self.rows(far_left_column_index, far_right_column_index),
constraints,
)
}
}
impl DrawableComponent for TableComponent {
fn draw<B: Backend>(&mut self, f: &mut Frame<B>, area: Rect, focused: bool) -> Result<()> {
let chunks = Layout::default()
.vertical_margin(1)
.horizontal_margin(1)
.direction(Direction::Vertical)
.constraints(
[
Constraint::Length(2),
Constraint::Min(1),
Constraint::Length(2),
]
.as_ref(),
)
.split(area);
f.render_widget(
Block::default()
.title(self.title())
.borders(Borders::ALL)
.style(if focused {
Style::default()
} else {
Style::default().fg(Color::DarkGray)
}),
area,
);
self.selected_row.selected().map_or_else(
|| {
self.scroll.reset();
},
|selection| {
self.scroll.update(
selection,
self.rows.len(),
chunks[1].height.saturating_sub(2) as usize,
);
},
);
let block = Block::default().borders(Borders::NONE);
let (selected_column_index, headers, rows, constraints) =
self.calculate_cell_widths(block.inner(chunks[0]).width);
let header_cells = headers.iter().enumerate().map(|(column_index, h)| {
Cell::from(h.to_string()).style(if selected_column_index == column_index {
Style::default().add_modifier(Modifier::BOLD)
} else {
Style::default()
})
});
let header = Row::new(header_cells).height(1).bottom_margin(1);
let rows = rows.iter().enumerate().map(|(row_index, item)| {
let height = item
.iter()
.map(|content| content.chars().filter(|c| *c == '\n').count())
.max()
.unwrap_or(0)
+ 1;
let cells = item.iter().enumerate().map(|(column_index, c)| {
Cell::from(c.to_string()).style(
if self.is_selected_cell(row_index, column_index, selected_column_index) {
Style::default().bg(Color::Blue)
} else if self.is_number_column(row_index, column_index) {
Style::default().add_modifier(Modifier::BOLD)
} else {
Style::default()
},
)
});
Row::new(cells).height(height as u16).bottom_margin(1)
});
let table = Table::new(rows)
.header(header)
.block(block)
.style(if focused {
Style::default()
} else {
Style::default().fg(Color::DarkGray)
})
.widths(&constraints);
let mut state = self.selected_row.clone();
f.render_stateful_widget(
table,
chunks[1],
if let Some((_, y)) = self.selection_area_corner {
state.select(Some(y));
&mut state
} else {
&mut self.selected_row
},
);
TableValueComponent::new(self.selected_cells().unwrap_or_default())
.draw(f, chunks[0], focused)?;
TableStatusComponent::new(
if self.rows.is_empty() {
None
} else {
Some(self.rows.len())
},
if self.headers.is_empty() {
None
} else {
Some(self.headers.len())
},
self.table.as_ref().map(|t| t.1.clone()),
)
.draw(f, chunks[2], focused)?;
self.scroll.draw(f, chunks[1]);
Ok(())
}
}
impl Component for TableComponent {
fn commands(&self, out: &mut Vec<CommandInfo>) {
out.push(CommandInfo::new(command::extend_selection_by_one_cell(
&self.key_config,
)));
}
fn event(&mut self, key: Key) -> Result<EventState> {
if key == self.key_config.scroll_left {
self.previous_column();
return Ok(EventState::Consumed);
} else if key == self.key_config.scroll_down {
self.next_row(1);
return Ok(EventState::NotConsumed);
} else if key == self.key_config.scroll_down_multiple_lines {
self.next_row(10);
return Ok(EventState::NotConsumed);
} else if key == self.key_config.scroll_up {
self.previous_row(1);
return Ok(EventState::Consumed);
} else if key == self.key_config.scroll_up_multiple_lines {
self.previous_row(10);
return Ok(EventState::Consumed);
} else if key == self.key_config.scroll_to_top {
self.scroll_to_top();
return Ok(EventState::Consumed);
} else if key == self.key_config.scroll_to_bottom {
self.scroll_to_bottom();
return Ok(EventState::Consumed);
} else if key == self.key_config.scroll_right {
self.next_column();
return Ok(EventState::Consumed);
} else if key == self.key_config.extend_selection_by_one_cell_left {
self.expand_selected_area_x(false);
return Ok(EventState::Consumed);
} else if key == self.key_config.extend_selection_by_one_cell_up {
self.expand_selected_area_y(false);
return Ok(EventState::Consumed);
} else if key == self.key_config.extend_selection_by_one_cell_down {
self.expand_selected_area_y(true);
return Ok(EventState::Consumed);
} else if key == self.key_config.extend_selection_by_one_cell_right {
self.expand_selected_area_x(true);
return Ok(EventState::Consumed);
}
Ok(EventState::NotConsumed)
}
}
#[cfg(test)]
mod test {
use super::{KeyConfig, TableComponent};
use tui::layout::Constraint;
#[test]
fn test_headers() {
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect();
assert_eq!(component.headers(1, 2), vec!["", "b"])
}
#[test]
fn test_rows() {
let mut component = TableComponent::new(KeyConfig::default());
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
assert_eq!(component.rows(1, 2), vec![vec!["1", "b"], vec!["2", "e"]],)
}
#[test]
fn test_expand_selected_area_x_left() {
// before
// 1 2 3
// 1 a b c
// 2 d |e| f
// after
// 1 2 3
// 1 a b c
// 2 |d e| f
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(1));
component.selected_column = 1;
component.expand_selected_area_x(false);
assert_eq!(component.selection_area_corner, Some((0, 1)));
assert_eq!(component.selected_cells(), Some("d,e".to_string()));
}
#[test]
fn test_expand_selected_area_x_right() {
// before
// 1 2 3
// 1 a b c
// 2 d |e| f
// after
// 1 2 3
// 1 a b c
// 2 d |e f|
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(1));
component.selected_column = 1;
component.expand_selected_area_x(true);
assert_eq!(component.selection_area_corner, Some((2, 1)));
assert_eq!(component.selected_cells(), Some("e,f".to_string()));
}
#[test]
fn test_expand_selected_area_y_up() {
// before
// 1 2 3
// 1 a b c
// 2 d |e| f
// after
// 1 2 3
// 1 a |b| c
// 2 d |e| f
let mut component = TableComponent::new(KeyConfig::default());
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(1));
component.selected_column = 1;
component.expand_selected_area_y(false);
assert_eq!(component.selection_area_corner, Some((1, 0)));
assert_eq!(component.selected_cells(), Some("b\ne".to_string()));
}
#[test]
fn test_expand_selected_area_y_down() {
// before
// 1 2 3
// 1 a |b| c
// 2 d e f
// after
// 1 2 3
// 1 a |b| c
// 2 d |e| f
let mut component = TableComponent::new(KeyConfig::default());
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(0));
component.selected_column = 1;
component.expand_selected_area_y(true);
assert_eq!(component.selection_area_corner, Some((1, 1)));
assert_eq!(component.selected_cells(), Some("b\ne".to_string()));
}
#[test]
fn test_is_number_column() {
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(0));
assert!(component.is_number_column(0, 0));
assert!(!component.is_number_column(0, 1));
}
#[test]
fn test_selected_cell_when_one_cell_selected() {
// 1 2 3
// 1 |a| b c
// 2 d e f
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(0));
assert_eq!(component.selected_cells(), Some("a".to_string()));
}
#[test]
fn test_selected_cell_when_multiple_cells_selected() {
// 1 2 3
// 1 |a b| c
// 2 |d e| f
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(0));
component.selection_area_corner = Some((1, 1));
assert_eq!(component.selected_cells(), Some("a,b\nd,e".to_string()));
}
#[test]
fn test_is_selected_cell_when_one_cell_selected() {
// 1 2 3
// 1 |a| b c
// 2 d e f
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(0));
// a
assert!(component.is_selected_cell(0, 1, 1));
// d
assert!(!component.is_selected_cell(1, 1, 1));
// e
assert!(!component.is_selected_cell(1, 2, 1));
}
#[test]
fn test_is_selected_cell_when_multiple_cells_selected() {
// 1 2 3
// 1 |a b| c
// 2 |d e| f
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["a", "b", "c"].iter().map(|h| h.to_string()).collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
component.selected_row.select(Some(0));
component.selection_area_corner = Some((1, 1));
// a
assert!(component.is_selected_cell(0, 1, 1));
// b
assert!(component.is_selected_cell(0, 2, 1));
// d
assert!(component.is_selected_cell(1, 1, 1));
// e
assert!(component.is_selected_cell(1, 2, 1));
// f
assert!(!component.is_selected_cell(1, 3, 1));
}
#[test]
fn test_calculate_cell_widths_when_sum_of_cell_widths_is_greater_than_table_width() {
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["aaaaa", "bbbbb", "ccccc"]
.iter()
.map(|h| h.to_string())
.collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
let (selected_column_index, headers, rows, constraints) =
component.calculate_cell_widths(10);
assert_eq!(selected_column_index, 1);
assert_eq!(headers, vec!["", "1", "2"]);
assert_eq!(rows, vec![vec!["1", "aaaaa", "bbbbb"], vec!["2", "d", "e"]]);
assert_eq!(
constraints,
vec![
Constraint::Length(1),
Constraint::Length(5),
Constraint::Min(10),
]
);
}
#[test]
fn test_calculate_cell_widths_when_sum_of_cell_widths_is_less_than_table_width() {
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["aaaaa", "bbbbb", "ccccc"]
.iter()
.map(|h| h.to_string())
.collect(),
vec!["d", "e", "f"].iter().map(|h| h.to_string()).collect(),
];
let (selected_column_index, headers, rows, constraints) =
component.calculate_cell_widths(20);
assert_eq!(selected_column_index, 1);
assert_eq!(headers, vec!["", "1", "2", "3"]);
assert_eq!(
rows,
vec![
vec!["1", "aaaaa", "bbbbb", "ccccc"],
vec!["2", "d", "e", "f"]
]
);
assert_eq!(
constraints,
vec![
Constraint::Length(1),
Constraint::Length(5),
Constraint::Length(5),
Constraint::Length(5),
]
);
}
#[test]
fn test_calculate_cell_widths_when_component_has_multiple_rows() {
let mut component = TableComponent::new(KeyConfig::default());
component.headers = vec!["1", "2", "3"].iter().map(|h| h.to_string()).collect();
component.rows = vec![
vec!["aaaaa", "bbbbb", "ccccc"]
.iter()
.map(|h| h.to_string())
.collect(),
vec!["dddddddddd", "e", "f"]
.iter()
.map(|h| h.to_string())
.collect(),
];
let (selected_column_index, headers, rows, constraints) =
component.calculate_cell_widths(20);
assert_eq!(selected_column_index, 1);
assert_eq!(headers, vec!["", "1", "2", "3"]);
assert_eq!(
rows,
vec![
vec!["1", "aaaaa", "bbbbb", "ccccc"],
vec!["2", "dddddddddd", "e", "f"]
]
);
assert_eq!(
constraints,
vec![
Constraint::Length(1),
Constraint::Length(10),
Constraint::Length(5),
Constraint::Length(5),
]
);
}
}
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