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app: Create CommonComponent
This is a utility that gathers common parts of components, like task and error handling.
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68
app/src/infra/common_component.rs
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68
app/src/infra/common_component.rs
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use anyhow::{Error, Result};
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use yew::{
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prelude::*,
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services::{fetch::FetchTask, ConsoleService},
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};
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pub trait CommonComponent<C: Component + CommonComponent<C>>: Component {
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fn handle_msg(&mut self, msg: <Self as Component>::Message) -> Result<bool>;
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fn mut_common(&mut self) -> &mut CommonComponentParts<C>;
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}
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pub struct CommonComponentParts<C: CommonComponent<C>> {
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pub link: ComponentLink<C>,
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pub props: <C as Component>::Properties,
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pub error: Option<Error>,
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pub task: Option<FetchTask>,
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}
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impl<C: CommonComponent<C>> CommonComponentParts<C> {
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pub fn create(props: <C as Component>::Properties, link: ComponentLink<C>) -> Self {
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Self {
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link,
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props,
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error: None,
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task: None,
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}
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}
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pub fn update(com: &mut C, msg: <C as Component>::Message) -> ShouldRender {
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com.mut_common().error = None;
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match com.handle_msg(msg) {
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Err(e) => {
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ConsoleService::error(&e.to_string());
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com.mut_common().error = Some(e);
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true
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}
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Ok(b) => b,
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}
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}
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pub fn call_backend<M, Req, Cb, Resp>(
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&mut self,
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method: M,
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req: Req,
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callback: Cb,
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) -> Result<()>
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where
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M: Fn(Req, Callback<Resp>) -> Result<FetchTask>,
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Cb: Fn(Resp) -> <C as Component>::Message + 'static,
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{
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self.task = Some(method(req, self.link.callback(callback))?);
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Ok(())
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}
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}
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impl<C: Component + CommonComponent<C>> std::ops::Deref for CommonComponentParts<C> {
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type Target = <C as Component>::Properties;
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fn deref(&self) -> &<Self as std::ops::Deref>::Target {
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&self.props
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}
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}
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impl<C: Component + CommonComponent<C>> std::ops::DerefMut for CommonComponentParts<C> {
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fn deref_mut(&mut self) -> &mut <Self as std::ops::Deref>::Target {
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&mut self.props
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}
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}
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@ -1,4 +1,5 @@
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pub mod api;
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pub mod common_component;
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pub mod cookies;
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pub mod graphql;
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pub mod modal;
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