e6696eaa3e
* Add segmented control, icons, toolbar * add to demos * doc tests * format code * Additional SFSymbol definitions
76 lines
2.7 KiB
Rust
76 lines
2.7 KiB
Rust
//! Implements a view for adding a new task/todo. This is still a bit cumbersome as patterns are
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//! worked out, but a quick explainer: when the user clicks the "add" button, we dispatch a message
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//! which flows back through here, and then we grab the value and process it.
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//!
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//! Ownership in Rust makes it tricky to do this right, and the TextField widget may undergo more
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//! changes before version 0.1. This approach is unlikely to break as an example while those
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//! changes are poked and prodded at, even if it is a bit verbose and confusing.
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use cacao::layout::{Layout, LayoutConstraint};
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use cacao::text::Label;
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use cacao::view::{View, ViewDelegate};
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use cacao::button::Button;
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use cacao::input::TextField;
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use crate::storage::{dispatch_ui, Message};
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#[derive(Debug, Default)]
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pub struct AddNewTodoContentView {
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pub view: Option<View>,
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pub input: Option<TextField>,
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pub button: Option<Button>
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}
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impl AddNewTodoContentView {
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pub fn on_message(&self, message: Message) {
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match message {
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Message::ProcessNewTodo => {
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if let Some(input) = &self.input {
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let task = input.get_value();
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if task != "" {
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dispatch_ui(Message::StoreNewTodo(task));
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}
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}
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},
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_ => {}
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}
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}
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}
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impl ViewDelegate for AddNewTodoContentView {
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const NAME: &'static str = "AddNewTodoContentView";
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fn did_load(&mut self, view: View) {
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let instructions = Label::new();
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instructions.set_text("Let's be real: we both know this task isn't getting done.");
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let input = TextField::new();
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let mut button = Button::new("Add");
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button.set_key_equivalent("\r");
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button.set_action(|_| dispatch_ui(Message::ProcessNewTodo));
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view.add_subview(&instructions);
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view.add_subview(&input);
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view.add_subview(&button);
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LayoutConstraint::activate(&[
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instructions.top.constraint_equal_to(&view.top).offset(16.),
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instructions.leading.constraint_equal_to(&view.leading).offset(16.),
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instructions.trailing.constraint_equal_to(&view.trailing).offset(-16.),
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input.top.constraint_equal_to(&instructions.bottom).offset(8.),
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input.leading.constraint_equal_to(&view.leading).offset(16.),
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input.trailing.constraint_equal_to(&view.trailing).offset(-16.),
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button.top.constraint_equal_to(&input.bottom).offset(8.),
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button.trailing.constraint_equal_to(&view.trailing).offset(-16.),
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button.bottom.constraint_equal_to(&view.bottom).offset(-16.)
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]);
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self.view = Some(view);
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self.input = Some(input);
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self.button = Some(button);
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}
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}
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