mirror of https://github.com/TaKO8Ki/gobang
Refactor filter components (#114)
* prevent cursor from sticking out of paragraph * define StatefulDrawableComponent * use database filter component * fix event orderpull/125/head
Takayuki Maeda
3 years ago
committed by
GitHub
parent
9c46512f70
commit
78d1297452
@ -0,0 +1,132 @@
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use super::{compute_character_width, Component, DrawableComponent, EventState};
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use crate::components::command::CommandInfo;
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use crate::event::Key;
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use anyhow::Result;
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use database_tree::Table;
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use tui::{
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backend::Backend,
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layout::Rect,
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style::{Color, Style},
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text::Spans,
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widgets::{Block, Borders, Paragraph},
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Frame,
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};
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use unicode_width::UnicodeWidthStr;
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pub struct DatabaseFilterComponent {
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pub table: Option<Table>,
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input: Vec<char>,
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input_idx: usize,
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input_cursor_position: u16,
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}
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impl DatabaseFilterComponent {
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pub fn new() -> Self {
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Self {
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table: None,
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input: Vec::new(),
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input_idx: 0,
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input_cursor_position: 0,
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}
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}
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pub fn input_str(&self) -> String {
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self.input.iter().collect()
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}
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pub fn reset(&mut self) {
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self.table = None;
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self.input = Vec::new();
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self.input_idx = 0;
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self.input_cursor_position = 0;
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}
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}
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impl DrawableComponent for DatabaseFilterComponent {
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fn draw<B: Backend>(&self, f: &mut Frame<B>, area: Rect, focused: bool) -> Result<()> {
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let query = Paragraph::new(Spans::from(format!(
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"{:w$}",
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if self.input.is_empty() && !focused {
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"Filter tables".to_string()
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} else {
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self.input_str()
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},
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w = area.width as usize
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)))
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.style(if focused {
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Style::default()
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} else {
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Style::default().fg(Color::DarkGray)
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})
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.block(Block::default().borders(Borders::BOTTOM));
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f.render_widget(query, area);
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if focused {
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f.set_cursor(
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(area.x + self.input_cursor_position).min(area.right().saturating_sub(1)),
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area.y,
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)
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}
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Ok(())
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}
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}
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impl Component for DatabaseFilterComponent {
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fn commands(&self, _out: &mut Vec<CommandInfo>) {}
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fn event(&mut self, key: Key) -> Result<EventState> {
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let input_str: String = self.input.iter().collect();
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match key {
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Key::Char(c) => {
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self.input.insert(self.input_idx, c);
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self.input_idx += 1;
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self.input_cursor_position += compute_character_width(c);
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return Ok(EventState::Consumed);
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}
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Key::Delete | Key::Backspace => {
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if input_str.width() > 0 && !self.input.is_empty() && self.input_idx > 0 {
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let last_c = self.input.remove(self.input_idx - 1);
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self.input_idx -= 1;
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self.input_cursor_position -= compute_character_width(last_c);
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}
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return Ok(EventState::Consumed);
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}
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Key::Left => {
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if !self.input.is_empty() && self.input_idx > 0 {
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self.input_idx -= 1;
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self.input_cursor_position = self
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.input_cursor_position
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.saturating_sub(compute_character_width(self.input[self.input_idx]));
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}
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return Ok(EventState::Consumed);
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}
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Key::Ctrl('a') => {
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if !self.input.is_empty() && self.input_idx > 0 {
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self.input_idx = 0;
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self.input_cursor_position = 0
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}
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return Ok(EventState::Consumed);
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}
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Key::Right => {
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if self.input_idx < self.input.len() {
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let next_c = self.input[self.input_idx];
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self.input_idx += 1;
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self.input_cursor_position += compute_character_width(next_c);
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}
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return Ok(EventState::Consumed);
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}
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Key::Ctrl('e') => {
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if self.input_idx < self.input.len() {
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self.input_idx = self.input.len();
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self.input_cursor_position = self.input_str().width() as u16;
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}
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return Ok(EventState::Consumed);
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}
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_ => (),
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}
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Ok(EventState::NotConsumed)
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}
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}
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