49 lines
1.1 KiB
Rust
49 lines
1.1 KiB
Rust
use std::hash::Hash;
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use iris_core::util::HashMap;
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use crate::prelude::*;
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pub struct WidgetSelector<T> {
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current: (T, StrongWidget),
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map: HashMap<T, StrongWidget>,
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}
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impl<T: Hash + Eq> WidgetSelector<T> {
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pub fn new(key: T, widget: StrongWidget) -> Self {
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Self {
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current: (key, widget),
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map: Default::default(),
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}
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}
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pub fn set(&mut self, key: T, widget: StrongWidget) {
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self.map.insert(key, widget);
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}
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pub fn select(&mut self, key: T) -> bool {
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if let Some(val) = self.map.remove(&key) {
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let mut new = (key, val);
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std::mem::swap(&mut new, &mut self.current);
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self.map.insert(new.0, new.1);
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true
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} else {
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false
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}
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}
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}
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impl<T: 'static> Widget for WidgetSelector<T> {
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fn draw(&mut self, painter: &mut Painter) {
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painter.widget(&self.current.1);
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}
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fn desired_width(&mut self, ctx: &mut SizeCtx) -> Len {
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ctx.width(&self.current.1)
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}
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fn desired_height(&mut self, ctx: &mut SizeCtx) -> Len {
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ctx.height(&self.current.1)
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}
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}
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