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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| use super::*; | ||
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| use crate::ui::layout::AreaOps; | ||
|
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| use ctl_client::core::types::Name; | ||
|
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| pub struct DropdownWidget<T> { | ||
| pub state: WidgetState, | ||
| pub name: TextWidget, | ||
| pub value_text: TextWidget, | ||
| pub value: usize, | ||
| pub options: Vec<(Name, T)>, | ||
|
|
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| pub dropdown_state: WidgetState, | ||
| pub dropdown_window: UiWindow<()>, | ||
| pub dropdown_items: Vec<TextWidget>, | ||
| } | ||
|
|
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| impl<T> DropdownWidget<T> { | ||
| pub fn new( | ||
| text: impl Into<Name>, | ||
| value: usize, | ||
| options: impl IntoIterator<Item = (impl Into<Name>, T)>, | ||
| ) -> Self { | ||
| let options: Vec<_> = options | ||
| .into_iter() | ||
| .map(|(name, t)| (name.into(), t)) | ||
| .collect(); | ||
| Self { | ||
| state: WidgetState::new(), | ||
| name: TextWidget::new(text), | ||
| value_text: TextWidget::new("<value>"), | ||
| value, | ||
| dropdown_state: WidgetState::new(), | ||
| dropdown_window: UiWindow::new((), 0.2), | ||
| dropdown_items: options | ||
| .iter() | ||
| .map(|(name, _)| TextWidget::new(name.clone())) | ||
| .collect(), | ||
| options, | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl<T: PartialEq + Clone> StatefulWidget for DropdownWidget<T> { | ||
| type State<'a> = T; | ||
|
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| fn state_mut(&mut self) -> &mut WidgetState { | ||
| &mut self.state | ||
| } | ||
|
|
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| fn update( | ||
| &mut self, | ||
| position: Aabb2<f32>, | ||
| context: &mut UiContext, | ||
| state: &mut Self::State<'_>, | ||
| ) { | ||
| self.value = self | ||
| .options | ||
| .iter() | ||
| .position(|(_, t)| t == state) | ||
| .unwrap_or(0); // TODO: maybe do smth with the error | ||
| self.state.update(position, context); | ||
| let mut main = position; | ||
|
|
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| let name = main.split_top(0.5); | ||
| let value = main; | ||
|
|
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| // TODO: limit height and allow scroll | ||
| let item_height = context.font_size; | ||
| let spacing = context.layout_size * 0.5; | ||
| let dropdown_height = (item_height + spacing) * self.options.len() as f32; | ||
| let floor = (value.max.y - dropdown_height).max(context.screen.min.y); | ||
| let dropdown = Aabb2 { | ||
| min: vec2(value.min.x, floor), | ||
| max: vec2(value.max.x, floor + dropdown_height), | ||
| }; | ||
| self.dropdown_state.update(dropdown, context); | ||
|
|
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| let focus = context.can_focus; | ||
| let can_select = | ||
| focus && self.dropdown_window.show.time.is_max() && self.dropdown_state.hovered; | ||
|
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| let mut position = dropdown.clone().cut_top(item_height); | ||
| for (i, item) in self.dropdown_items.iter_mut().enumerate() { | ||
| item.update(position, context); | ||
| if can_select && item.state.clicked { | ||
| self.value = i; | ||
| if let Some((_, value)) = self.options.get(i) { | ||
| *state = value.clone(); | ||
| } | ||
| self.dropdown_window.request = Some(WidgetRequest::Close); | ||
| } | ||
| position = position.translate(vec2(0.0, -item_height - spacing)); | ||
| } | ||
|
|
||
| if can_select { | ||
| context.can_focus = false; | ||
| } | ||
|
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| self.name.update(name, context); | ||
| self.value_text.update(value, context); | ||
|
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| if let Some((name, _)) = self.options.get(self.value) { | ||
| self.value_text.text = name.clone(); | ||
| } | ||
|
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| if self.value_text.state.clicked { | ||
| self.dropdown_window.request = Some(WidgetRequest::Open); | ||
| } | ||
| self.dropdown_window.update(context.delta_time); | ||
|
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| context.can_focus = focus; | ||
| } | ||
| } |