Files
RuDS/crates/bds-ui/src/views/tab_bar.rs

272 lines
8.7 KiB
Rust

use crate::components::keyboard;
use iced::widget::button;
use iced::widget::scrollable::Direction;
use iced::widget::text::Shaping;
use iced::widget::tooltip::Position;
use iced::widget::{Space, container, row, scrollable, text, tooltip};
use iced::{Background, Border, Color, Element, Font, Length, Theme};
use bds_core::i18n::UiLocale;
use crate::app::Message;
use crate::components::inputs;
use crate::i18n::t;
use crate::state::tabs::Tab;
/// tabs.allium config: tab_min_width=100, tab_max_width=160
/// In a scrollable tab bar, tabs use the max width since they never need to shrink.
const TAB_WIDTH: f32 = 160.0;
const CHAT_TITLE_MAX_LEN: usize = 18;
/// Maximum characters for tab titles.
/// TAB_WIDTH (160) minus padding (16) minus close button + spacing (~28)
/// leaves ~116px. At ~6.8px per char (12px proportional font) ≈ 17 chars.
const TAB_TITLE_MAX_LEN: usize = 17;
/// Tab bar background.
fn bar_style(_theme: &Theme) -> container::Style {
container::Style {
background: Some(Background::Color(inputs::SIDEBAR_BG)),
border: Border {
color: inputs::BORDER_COLOR,
width: 0.0,
radius: 0.0.into(),
},
..container::Style::default()
}
}
/// Active tab style.
fn tab_active(_theme: &Theme, _status: button::Status) -> button::Style {
button::Style {
background: Some(Background::Color(inputs::APP_BG)),
text_color: Color::WHITE,
border: Border {
color: Color::from_rgb(0.30, 0.55, 0.90),
width: 0.0,
radius: 6.0.into(),
},
..button::Style::default()
}
}
/// Inactive tab style.
fn tab_inactive(_theme: &Theme, status: button::Status) -> button::Style {
let bg = match status {
button::Status::Hovered => inputs::ELEVATED_BG,
_ => inputs::SIDEBAR_BG,
};
button::Style {
background: Some(Background::Color(bg)),
text_color: Color::from_rgb(0.60, 0.60, 0.65),
border: Border {
color: Color::TRANSPARENT,
width: 0.0,
radius: 6.0.into(),
},
..button::Style::default()
}
}
/// Close button on tab.
fn close_style(_theme: &Theme, status: button::Status) -> button::Style {
let color = match status {
button::Status::Hovered => Color::WHITE,
_ => Color::from_rgb(0.45, 0.45, 0.50),
};
button::Style {
background: Some(Background::Color(Color::TRANSPARENT)),
text_color: color,
border: Border::default(),
..button::Style::default()
}
}
/// Truncate chat title per tabs.allium: chat_title_max_length = 18.
fn truncate_chat_title(title: &str) -> String {
if title.chars().count() > CHAT_TITLE_MAX_LEN {
let truncated: String = title.chars().take(CHAT_TITLE_MAX_LEN).collect();
format!("{truncated}...")
} else {
title.to_string()
}
}
/// Truncate a tab title to fit within the tab's available text area.
/// Uses "…" (Unicode ellipsis) as the truncation indicator.
fn truncate_tab_title(title: &str) -> String {
if title.chars().count() > TAB_TITLE_MAX_LEN {
let truncated: String = title
.chars()
.take(TAB_TITLE_MAX_LEN.saturating_sub(1))
.collect();
format!("{truncated}\u{2026}")
} else {
title.to_string()
}
}
/// Build tooltip text per tabs.allium:
/// Base: tab title. If transient: append " (Preview)". If dirty: append " * Modified".
fn build_tooltip_text(tab: &Tab, locale: UiLocale) -> String {
let mut tip = tab.title.clone();
if tab.is_transient {
tip.push_str(" (");
tip.push_str(&t(locale, "tabBar.preview"));
tip.push(')');
}
if tab.is_dirty {
tip.push_str(" * ");
tip.push_str(&t(locale, "tabBar.modified"));
}
tip
}
pub fn view(tabs: &[Tab], active_tab: Option<&str>, locale: UiLocale) -> Element<'static, Message> {
// Per tabs.allium: "Hidden when no tabs exist."
if tabs.is_empty() {
return Space::new().height(0).into();
}
let tab_buttons: Vec<Element<'static, Message>> = tabs
.iter()
.map(|tab| {
let is_active = active_tab == Some(tab.id.as_str());
let tab_id = tab.id.clone();
let close_id = tab.id.clone();
// Per tabs.allium: chat titles are JS-truncated to 18 chars + "..."
// All other titles are truncated to fit the tab's text area.
let display_title = if tab.tab_type == crate::state::tabs::TabType::Chat {
truncate_chat_title(&tab.title)
} else {
truncate_tab_title(&tab.title)
};
// Per tabs.allium: transient tabs show italic title
let title_label = if tab.is_transient {
text(display_title)
.size(12)
.shaping(Shaping::Advanced)
.font(Font {
style: iced::font::Style::Italic,
..Font::DEFAULT
})
.wrapping(iced::widget::text::Wrapping::None)
} else {
text(display_title)
.size(12)
.shaping(Shaping::Advanced)
.wrapping(iced::widget::text::Wrapping::None)
};
// Per tabs.allium DirtyIndicator: dot for dirty post tabs
let dirty_indicator = if tab.is_dirty {
text(" \u{25CF}")
.size(10)
.shaping(Shaping::Advanced)
.color(Color::from_rgb(0.90, 0.70, 0.30))
} else {
text("").size(10)
};
// Title + dirty indicator clipped to enforce ellipsis-like truncation
let title_area = container(
row![title_label, dirty_indicator]
.spacing(2)
.align_y(iced::Alignment::Center),
)
.width(Length::Fill)
.clip(true);
// Keep the tooltip around non-interactive title content so it does
// not hide the tab and close controls from widget operations.
let tooltip_text = build_tooltip_text(tab, locale);
let title_area = tooltip(
title_area,
text(tooltip_text).size(11).shaping(Shaping::Advanced),
Position::Bottom,
)
.gap(4)
.style(inputs::tooltip_style);
let label = row![
title_area,
keyboard::button(text("\u{2715}").size(10).shaping(Shaping::Advanced))
.on_press(Message::CloseTab(close_id))
.padding(2)
.style(close_style),
]
.spacing(4)
.align_y(iced::Alignment::Center);
// tabs.allium: tab_min_width=100, tab_max_width=160
keyboard::button(label)
.on_press(Message::SelectTab(tab_id))
.padding([6, 8])
.width(Length::Fixed(TAB_WIDTH))
.style(if is_active { tab_active } else { tab_inactive })
.into()
})
.collect();
// tabs.allium: horizontal strip with overflow scroll
let tab_row = iced::widget::Row::with_children(tab_buttons)
.spacing(1)
.height(Length::Fixed(35.0));
let scrollable_tabs = scrollable(tab_row)
.direction(Direction::Horizontal(
scrollable::Scrollbar::new().width(0).scroller_width(0),
))
.width(Length::Fill)
.height(Length::Fixed(35.0));
container(scrollable_tabs)
.width(Length::Fill)
.height(Length::Fixed(35.0))
.style(bar_style)
.into()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn truncate_chat_title_short() {
assert_eq!(truncate_chat_title("Hello"), "Hello");
}
#[test]
fn truncate_chat_title_exact_18() {
let title: String = "a".repeat(18);
assert_eq!(truncate_chat_title(&title), title);
}
#[test]
fn truncate_chat_title_over_18() {
let title: String = "a".repeat(25);
let expected = format!("{}...", "a".repeat(18));
assert_eq!(truncate_chat_title(&title), expected);
}
#[test]
fn truncate_tab_title_short() {
assert_eq!(truncate_tab_title("Settings"), "Settings");
}
#[test]
fn truncate_tab_title_exact_limit() {
let title: String = "a".repeat(TAB_TITLE_MAX_LEN);
assert_eq!(truncate_tab_title(&title), title);
}
#[test]
fn truncate_tab_title_over_limit() {
let title: String = "a".repeat(30);
let expected = format!("{}\u{2026}", "a".repeat(TAB_TITLE_MAX_LEN - 1));
assert_eq!(truncate_tab_title(&title), expected);
}
}