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-rw-r--r--native/src/widget/pick_list.rs79
1 files changed, 50 insertions, 29 deletions
diff --git a/native/src/widget/pick_list.rs b/native/src/widget/pick_list.rs
index 9f62e550..b5e3c99c 100644
--- a/native/src/widget/pick_list.rs
+++ b/native/src/widget/pick_list.rs
@@ -14,6 +14,9 @@ where
[T]: ToOwned<Owned = Vec<T>>,
{
menu: &'a mut menu::State,
+ is_open: &'a mut bool,
+ hovered_option: &'a mut Option<usize>,
+ last_selection: &'a mut Option<T>,
on_selected: Box<dyn Fn(T) -> Message>,
options: Cow<'a, [T]>,
selected: Option<T>,
@@ -22,15 +25,17 @@ where
text_size: Option<u16>,
font: Renderer::Font,
style: <Renderer as self::Renderer>::Style,
- is_open: bool,
}
/// The local state of a [`PickList`].
///
/// [`PickList`]: struct.PickList.html
#[derive(Debug, Clone, Default)]
-pub struct State {
+pub struct State<T> {
menu: menu::State,
+ is_open: bool,
+ hovered_option: Option<usize>,
+ last_selection: Option<T>,
}
impl<'a, T: 'a, Message, Renderer: self::Renderer>
@@ -46,15 +51,23 @@ where
/// [`PickList`]: struct.PickList.html
/// [`State`]: struct.State.html
pub fn new(
- state: &'a mut State,
+ state: &'a mut State<T>,
options: impl Into<Cow<'a, [T]>>,
selected: Option<T>,
on_selected: impl Fn(T) -> Message + 'static,
) -> Self {
- let is_open = state.menu.is_open();
+ let State {
+ menu,
+ is_open,
+ hovered_option,
+ last_selection,
+ } = state;
Self {
- menu: &mut state.menu,
+ menu,
+ is_open,
+ hovered_option,
+ last_selection,
on_selected: Box::new(on_selected),
options: options.into(),
selected,
@@ -63,7 +76,6 @@ where
padding: Renderer::DEFAULT_PADDING,
font: Default::default(),
style: Default::default(),
- is_open,
}
}
@@ -197,27 +209,32 @@ where
event: Event,
layout: Layout<'_>,
cursor_position: Point,
- _messages: &mut Vec<Message>,
+ messages: &mut Vec<Message>,
_renderer: &Renderer,
_clipboard: Option<&dyn Clipboard>,
) {
- if !self.is_open {
- match event {
- Event::Mouse(mouse::Event::ButtonPressed(
- mouse::Button::Left,
- )) => {
- if layout.bounds().contains(cursor_position) {
- let selected = self.selected.as_ref();
-
- self.menu.open(
- self.options
- .iter()
- .position(|option| Some(option) == selected),
- );
- }
+ match event {
+ Event::Mouse(mouse::Event::ButtonPressed(mouse::Button::Left)) => {
+ if *self.is_open {
+ *self.is_open =
+ cursor_position.x < 0.0 || cursor_position.y < 0.0;
+ } else if layout.bounds().contains(cursor_position) {
+ let selected = self.selected.as_ref();
+
+ *self.is_open = true;
+ *self.hovered_option = self
+ .options
+ .iter()
+ .position(|option| Some(option) == selected);
+ }
+
+ if let Some(last_selection) = self.last_selection.take() {
+ messages.push((self.on_selected)(last_selection));
+
+ *self.is_open = false;
}
- _ => {}
}
+ _ => {}
}
}
@@ -244,15 +261,19 @@ where
&mut self,
layout: Layout<'_>,
) -> Option<overlay::Element<'_, Message, Renderer>> {
- if self.menu.is_open() {
+ if *self.is_open {
let bounds = layout.bounds();
- let mut menu =
- Menu::new(&mut self.menu, &self.options, &self.on_selected)
- .width(bounds.width.round() as u16)
- .padding(self.padding)
- .font(self.font)
- .style(Renderer::menu_style(&self.style));
+ let mut menu = Menu::new(
+ &mut self.menu,
+ &self.options,
+ &mut self.hovered_option,
+ &mut self.last_selection,
+ )
+ .width(bounds.width.round() as u16)
+ .padding(self.padding)
+ .font(self.font)
+ .style(Renderer::menu_style(&self.style));
if let Some(text_size) = self.text_size {
menu = menu.text_size(text_size);