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use tui::buffer::Buffer;
use tui::layout::{Constraint, Direction, Layout, Rect};
use tui::style::{Color, Style};
use tui::text::Span;
use tui::widgets::{Block, Borders, Paragraph, Widget, Wrap};
use crate::context::AppContext;
use crate::ui::widgets::{TuiDirListDetailed, TuiFooter, TuiTabBar, TuiTopBar};
const TAB_VIEW_WIDTH: u16 = 15;
pub struct TuiHSplitView<'a> {
pub context: &'a AppContext,
pub show_bottom_status: bool,
}
impl<'a> TuiHSplitView<'a> {
pub fn new(context: &'a AppContext) -> Self {
Self {
context,
show_bottom_status: true,
}
}
}
impl<'a> Widget for TuiHSplitView<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
let tab_context = self.context.tab_context_ref();
let config = self.context.config_ref();
let display_options = config.display_options_ref();
let constraints = &[Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)];
let layout_rect = if display_options.show_borders() {
let area = Rect {
y: area.top() + 1,
height: area.height - 2,
..area
};
let layout = calculate_layout_with_borders(area, constraints);
let block = Block::default().borders(Borders::ALL);
let inner = block.inner(area);
block.render(area, buf);
let layout_rect = Layout::default()
.direction(Direction::Horizontal)
.constraints(constraints.as_ref())
.split(inner);
let block = Block::default().borders(Borders::RIGHT);
block.render(layout_rect[0], buf);
let block = Block::default().borders(Borders::LEFT);
block.render(layout_rect[1], buf);
layout
} else {
let area = Rect {
y: area.top() + 1,
height: area.height - 2,
..area
};
calculate_layout(area, constraints)
};
let tab_id = tab_context.curr_tab_id();
let tab_index = tab_context.index;
if let Some(curr_tab) = tab_context.tab_ref(&tab_id) {
let curr_list = curr_tab.curr_list_ref();
let layout_rect = if tab_index % 2 == 0 {
layout_rect[0]
} else {
layout_rect[1]
};
// render current view
if let Some(list) = curr_list.as_ref() {
TuiDirListDetailed::new(list, display_options, curr_tab.option_ref(), true)
.render(layout_rect, buf);
let rect = Rect {
x: 0,
y: area.height - 1,
width: area.width,
height: 1,
};
if self.show_bottom_status {
/* draw the bottom status bar */
if let Some(msg) = self.context.worker_context_ref().get_msg() {
let message_style = Style::default().fg(Color::Yellow);
let text = Span::styled(msg, message_style);
Paragraph::new(text)
.wrap(Wrap { trim: true })
.render(rect, buf);
} else if let Some(msg) = self.context.message_queue_ref().current_message() {
let text = Span::styled(msg.content.as_str(), msg.style);
Paragraph::new(text)
.wrap(Wrap { trim: true })
.render(rect, buf);
} else {
TuiFooter::new(list, curr_tab.option_ref()).render(rect, buf);
}
}
}
let topbar_width = area.width;
let rect = Rect {
x: 0,
y: 0,
width: topbar_width,
height: 1,
};
TuiTopBar::new(self.context, curr_tab.cwd()).render(rect, buf);
// render tabs
if self.context.tab_context_ref().len() > 1 {
let topbar_width = area.width.saturating_sub(TAB_VIEW_WIDTH);
let rect = Rect {
x: topbar_width,
y: 0,
width: TAB_VIEW_WIDTH,
height: 1,
};
TuiTabBar::new(self.context.tab_context_ref()).render(rect, buf);
}
}
let other_tab_index = if tab_index % 2 == 0 {
tab_index + 1
} else {
tab_index - 1
};
if other_tab_index < tab_context.tab_order.len() {
let other_tab_id = tab_context.tab_order[other_tab_index];
if let Some(curr_tab) = tab_context.tab_ref(&other_tab_id) {
let curr_list = curr_tab.curr_list_ref();
let layout_rect = if other_tab_index % 2 == 0 {
layout_rect[0]
} else {
layout_rect[1]
};
if let Some(list) = curr_list.as_ref() {
TuiDirListDetailed::new(list, display_options, curr_tab.option_ref(), false)
.render(layout_rect, buf);
}
}
}
}
}
fn calculate_layout(area: Rect, constraints: &[Constraint; 2]) -> Vec<Rect> {
let mut layout_rect = Layout::default()
.direction(Direction::Horizontal)
.constraints(constraints.as_ref())
.split(area)
.to_vec();
layout_rect[0] = Rect {
width: layout_rect[0].width - 1,
..layout_rect[0]
};
layout_rect[1] = Rect {
width: layout_rect[1].width - 1,
..layout_rect[1]
};
layout_rect
}
fn calculate_layout_with_borders(area: Rect, constraints: &[Constraint; 2]) -> Vec<Rect> {
let block = Block::default().borders(Borders::ALL);
let inner = block.inner(area);
let layout_rect = Layout::default()
.direction(Direction::Horizontal)
.constraints(constraints.as_ref())
.split(inner);
let block = Block::default().borders(Borders::RIGHT);
let inner1 = block.inner(layout_rect[0]);
let block = Block::default().borders(Borders::LEFT);
let inner2 = block.inner(layout_rect[1]);
vec![inner1, inner2]
}
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