78 lines
2.1 KiB
Rust
78 lines
2.1 KiB
Rust
use cosmic::iced::widget::{horizontal_space, row};
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use cosmic::iced::{Alignment, Length};
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use cosmic::widget::{button, icon, segmented_button, view_switcher};
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use cosmic::{Apply, Element};
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use slotmap::Key;
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#[derive(Clone, Copy, Debug)]
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pub enum Message {
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Activate(segmented_button::Entity),
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AddNew,
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Close(segmented_button::Entity),
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}
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pub struct State {
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pub pages: segmented_button::SingleSelectModel,
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}
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impl Default for State {
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fn default() -> Self {
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let mut state = Self {
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pages: segmented_button::Model::default(),
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};
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let id = state.tab_add_new();
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state.pages.activate(id);
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state
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}
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}
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impl State {
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pub(super) fn update(&mut self, message: Message) {
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match message {
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Message::Activate(id) => self.pages.activate(id),
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Message::AddNew => {
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self.tab_add_new();
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}
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Message::Close(id) => self.tab_close(id),
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}
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}
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pub fn tab_add_new(&mut self) -> segmented_button::Entity {
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let id = self.pages.insert().closable().id();
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self.pages
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.text_set(id, format!("Tab {}", id.data().as_ffi() & 0xffff_ffff));
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id
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}
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pub fn tab_close(&mut self, id: segmented_button::Entity) {
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if self.pages.is_active(id) {
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if let Some(pos) = self.pages.position(id) {
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let next = if pos == 0 { pos + 1 } else { pos - 1 };
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self.pages.activate_position(next);
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}
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}
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self.pages.remove(id);
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}
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pub(super) fn view<'a>(&'a self, _window: &'a super::Window) -> Element<'a, Message> {
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let tabs = view_switcher::horizontal(&self.pages)
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.show_close_icon_on_hover(true)
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.on_activate(Message::Activate)
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.on_close(Message::Close)
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.width(Length::Shrink);
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let new_tab_button = icon::from_name("tab-new-symbolic")
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.size(20)
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.apply(button::icon)
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.on_press(Message::AddNew);
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let tab_header = row!(tabs, new_tab_button).align_items(Alignment::Center);
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row!(tab_header, horizontal_space(Length::Fill)).into()
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}
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}
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