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authorLibravatar Bingus <shankern@protonmail.com>2023-07-12 12:23:18 -0700
committerLibravatar Bingus <shankern@protonmail.com>2023-07-12 12:23:18 -0700
commit633f405f3f78bc7f82d2b2061491b0e011137451 (patch)
tree5ebfc1f45d216a5c14a90492563599e6969eab4d /native/src/widget/operation.rs
parent41836dd80d0534608e7aedfbf2319c540a23de1a (diff)
parent21bd51426d900e271206f314e0c915dd41065521 (diff)
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Merge remote-tracking branch 'origin/master' into feat/multi-window-support
# Conflicts: # Cargo.toml # core/src/window/icon.rs # core/src/window/id.rs # core/src/window/position.rs # core/src/window/settings.rs # examples/integration/src/main.rs # examples/integration_opengl/src/main.rs # glutin/src/application.rs # native/src/subscription.rs # native/src/window.rs # runtime/src/window/action.rs # src/lib.rs # src/window.rs # winit/Cargo.toml # winit/src/application.rs # winit/src/icon.rs # winit/src/settings.rs # winit/src/window.rs
Diffstat (limited to 'native/src/widget/operation.rs')
-rw-r--r--native/src/widget/operation.rs112
1 files changed, 0 insertions, 112 deletions
diff --git a/native/src/widget/operation.rs b/native/src/widget/operation.rs
deleted file mode 100644
index 53688a21..00000000
--- a/native/src/widget/operation.rs
+++ /dev/null
@@ -1,112 +0,0 @@
-//! Query or update internal widget state.
-pub mod focusable;
-pub mod scrollable;
-pub mod text_input;
-
-pub use focusable::Focusable;
-pub use scrollable::Scrollable;
-pub use text_input::TextInput;
-
-use crate::widget::Id;
-
-use std::any::Any;
-use std::fmt;
-
-/// A piece of logic that can traverse the widget tree of an application in
-/// order to query or update some widget state.
-pub trait Operation<T> {
- /// Operates on a widget that contains other widgets.
- ///
- /// The `operate_on_children` function can be called to return control to
- /// the widget tree and keep traversing it.
- fn container(
- &mut self,
- id: Option<&Id>,
- operate_on_children: &mut dyn FnMut(&mut dyn Operation<T>),
- );
-
- /// Operates on a widget that can be focused.
- fn focusable(&mut self, _state: &mut dyn Focusable, _id: Option<&Id>) {}
-
- /// Operates on a widget that can be scrolled.
- fn scrollable(&mut self, _state: &mut dyn Scrollable, _id: Option<&Id>) {}
-
- /// Operates on a widget that has text input.
- fn text_input(&mut self, _state: &mut dyn TextInput, _id: Option<&Id>) {}
-
- /// Operates on a custom widget with some state.
- fn custom(&mut self, _state: &mut dyn Any, _id: Option<&Id>) {}
-
- /// Finishes the [`Operation`] and returns its [`Outcome`].
- fn finish(&self) -> Outcome<T> {
- Outcome::None
- }
-}
-
-/// The result of an [`Operation`].
-pub enum Outcome<T> {
- /// The [`Operation`] produced no result.
- None,
-
- /// The [`Operation`] produced some result.
- Some(T),
-
- /// The [`Operation`] needs to be followed by another [`Operation`].
- Chain(Box<dyn Operation<T>>),
-}
-
-impl<T> fmt::Debug for Outcome<T>
-where
- T: fmt::Debug,
-{
- fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- match self {
- Self::None => write!(f, "Outcome::None"),
- Self::Some(output) => write!(f, "Outcome::Some({output:?})"),
- Self::Chain(_) => write!(f, "Outcome::Chain(...)"),
- }
- }
-}
-
-/// Produces an [`Operation`] that applies the given [`Operation`] to the
-/// children of a container with the given [`Id`].
-pub fn scoped<T: 'static>(
- target: Id,
- operation: impl Operation<T> + 'static,
-) -> impl Operation<T> {
- struct ScopedOperation<Message> {
- target: Id,
- operation: Box<dyn Operation<Message>>,
- }
-
- impl<Message: 'static> Operation<Message> for ScopedOperation<Message> {
- fn container(
- &mut self,
- id: Option<&Id>,
- operate_on_children: &mut dyn FnMut(&mut dyn Operation<Message>),
- ) {
- if id == Some(&self.target) {
- operate_on_children(self.operation.as_mut());
- } else {
- operate_on_children(self);
- }
- }
-
- fn finish(&self) -> Outcome<Message> {
- match self.operation.finish() {
- Outcome::Chain(next) => {
- Outcome::Chain(Box::new(ScopedOperation {
- target: self.target.clone(),
- operation: next,
- }))
- }
- outcome => outcome,
- }
- }
- }
-
- ScopedOperation {
- target,
- operation: Box::new(operation),
- }
-}