From c4bca3f2af7ae9b2c8dfc3af48ab73dad852ed34 Mon Sep 17 00:00:00 2001 From: Cory Forsstrom Date: Fri, 11 Nov 2022 08:43:36 -0800 Subject: Add text input operations --- native/src/widget/action.rs | 8 ++ native/src/widget/operation.rs | 5 ++ native/src/widget/operation/text_input.rs | 131 ++++++++++++++++++++++++++++++ native/src/widget/text_input.rs | 45 ++++++++++ 4 files changed, 189 insertions(+) create mode 100644 native/src/widget/operation/text_input.rs (limited to 'native/src/widget') diff --git a/native/src/widget/action.rs b/native/src/widget/action.rs index 0345fe2b..593d6f63 100644 --- a/native/src/widget/action.rs +++ b/native/src/widget/action.rs @@ -93,4 +93,12 @@ where ) { self.operation.scrollable(state, id); } + + fn text_input( + &mut self, + state: &mut dyn operation::TextInput, + id: Option<&Id>, + ) { + self.operation.text_input(state, id); + } } diff --git a/native/src/widget/operation.rs b/native/src/widget/operation.rs index 2b1179f1..a0aa4117 100644 --- a/native/src/widget/operation.rs +++ b/native/src/widget/operation.rs @@ -1,9 +1,11 @@ //! 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; @@ -28,6 +30,9 @@ pub trait Operation { /// 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>) {} + /// Finishes the [`Operation`] and returns its [`Outcome`]. fn finish(&self) -> Outcome { Outcome::None diff --git a/native/src/widget/operation/text_input.rs b/native/src/widget/operation/text_input.rs new file mode 100644 index 00000000..4c773e99 --- /dev/null +++ b/native/src/widget/operation/text_input.rs @@ -0,0 +1,131 @@ +//! Operate on widgets that have text input. +use crate::widget::operation::Operation; +use crate::widget::Id; + +/// The internal state of a widget that has text input. +pub trait TextInput { + /// Moves the cursor of the text input to the front of the input text. + fn move_cursor_to_front(&mut self); + /// Moves the cursor of the text input to the end of the input text. + fn move_cursor_to_end(&mut self); + /// Moves the cursor of the text input to an arbitrary location. + fn move_cursor_to(&mut self, position: usize); + /// Selects all the content of the text input. + fn select_all(&mut self); +} + +/// Produces an [`Operation`] that moves the cursor of the widget with the given [`Id`] to the +/// front. +pub fn move_cursor_to_front(target: Id) -> impl Operation { + struct MoveCursor { + target: Id, + } + + impl Operation for MoveCursor { + fn text_input(&mut self, state: &mut dyn TextInput, id: Option<&Id>) { + match id { + Some(id) if id == &self.target => { + state.move_cursor_to_front(); + } + _ => {} + } + } + + fn container( + &mut self, + _id: Option<&Id>, + operate_on_children: &mut dyn FnMut(&mut dyn Operation), + ) { + operate_on_children(self) + } + } + + MoveCursor { target } +} + +/// Produces an [`Operation`] that moves the cursor of the widget with the given [`Id`] to the +/// end. +pub fn move_cursor_to_end(target: Id) -> impl Operation { + struct MoveCursor { + target: Id, + } + + impl Operation for MoveCursor { + fn text_input(&mut self, state: &mut dyn TextInput, id: Option<&Id>) { + match id { + Some(id) if id == &self.target => { + state.move_cursor_to_end(); + } + _ => {} + } + } + + fn container( + &mut self, + _id: Option<&Id>, + operate_on_children: &mut dyn FnMut(&mut dyn Operation), + ) { + operate_on_children(self) + } + } + + MoveCursor { target } +} + +/// Produces an [`Operation`] that moves the cursor of the widget with the given [`Id`] to the +/// provided position. +pub fn move_cursor_to(target: Id, position: usize) -> impl Operation { + struct MoveCursor { + target: Id, + position: usize, + } + + impl Operation for MoveCursor { + fn text_input(&mut self, state: &mut dyn TextInput, id: Option<&Id>) { + match id { + Some(id) if id == &self.target => { + state.move_cursor_to(self.position); + } + _ => {} + } + } + + fn container( + &mut self, + _id: Option<&Id>, + operate_on_children: &mut dyn FnMut(&mut dyn Operation), + ) { + operate_on_children(self) + } + } + + MoveCursor { target, position } +} + +/// Produces an [`Operation`] that selects all the content of the widget with the given [`Id`]. +pub fn select_all(target: Id) -> impl Operation { + struct MoveCursor { + target: Id, + } + + impl Operation for MoveCursor { + fn text_input(&mut self, state: &mut dyn TextInput, id: Option<&Id>) { + match id { + Some(id) if id == &self.target => { + state.select_all(); + } + _ => {} + } + } + + fn container( + &mut self, + _id: Option<&Id>, + operate_on_children: &mut dyn FnMut(&mut dyn Operation), + ) { + operate_on_children(self) + } + } + + MoveCursor { target } +} diff --git a/native/src/widget/text_input.rs b/native/src/widget/text_input.rs index 2315b05a..e2886181 100644 --- a/native/src/widget/text_input.rs +++ b/native/src/widget/text_input.rs @@ -233,6 +233,7 @@ where let state = tree.state.downcast_mut::(); operation.focusable(state, self.id.as_ref().map(|id| &id.0)); + operation.text_input(state, self.id.as_ref().map(|id| &id.0)); } fn on_event( @@ -337,6 +338,32 @@ pub fn focus(id: Id) -> Command { Command::widget(operation::focusable::focus(id.0)) } +/// Produces a [`Command`] that moves the cursor of the [`TextInput`] with the given [`Id`] to the +/// end. +pub fn move_cursor_to_end(id: Id) -> Command { + Command::widget(operation::text_input::move_cursor_to_end(id.0)) +} + +/// Produces a [`Command`] that moves the cursor of the [`TextInput`] with the given [`Id`] to the +/// front. +pub fn move_cursor_to_front(id: Id) -> Command { + Command::widget(operation::text_input::move_cursor_to_front(id.0)) +} + +/// Produces a [`Command`] that moves the cursor of the [`TextInput`] with the given [`Id`] to the +/// provided position. +pub fn move_cursor_to( + id: Id, + position: usize, +) -> Command { + Command::widget(operation::text_input::move_cursor_to(id.0, position)) +} + +/// Produces a [`Command`] that selects all the content of the [`TextInput`] with the given [`Id`]. +pub fn select_all(id: Id) -> Command { + Command::widget(operation::text_input::select_all(id.0)) +} + /// Computes the layout of a [`TextInput`]. pub fn layout( renderer: &Renderer, @@ -1001,6 +1028,24 @@ impl operation::Focusable for State { } } +impl operation::TextInput for State { + fn move_cursor_to_front(&mut self) { + State::move_cursor_to_front(self) + } + + fn move_cursor_to_end(&mut self) { + State::move_cursor_to_end(self) + } + + fn move_cursor_to(&mut self, position: usize) { + State::move_cursor_to(self, position) + } + + fn select_all(&mut self) { + State::select_all(self) + } +} + mod platform { use crate::keyboard; -- cgit