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-rw-r--r--examples/todos/src/main.rs29
1 files changed, 26 insertions, 3 deletions
diff --git a/examples/todos/src/main.rs b/examples/todos/src/main.rs
index a4009874..7e866b19 100644
--- a/examples/todos/src/main.rs
+++ b/examples/todos/src/main.rs
@@ -557,15 +557,38 @@ impl SavedState {
}
}
-// TODO
#[cfg(target_arch = "wasm32")]
impl SavedState {
+ fn storage() -> Option<web_sys::Storage> {
+ let window = web_sys::window()?;
+
+ window.local_storage().ok()?
+ }
+
async fn load() -> Result<SavedState, LoadError> {
- Err(LoadError::FileError)
+ let storage = Self::storage().ok_or(LoadError::FileError)?;
+
+ let contents = storage
+ .get_item("state")
+ .map_err(|_| LoadError::FileError)?
+ .ok_or(LoadError::FileError)?;
+
+ serde_json::from_str(&contents).map_err(|_| LoadError::FormatError)
}
async fn save(self) -> Result<(), SaveError> {
- Err(SaveError::FileError)
+ let storage = Self::storage().ok_or(SaveError::FileError)?;
+
+ let json = serde_json::to_string_pretty(&self)
+ .map_err(|_| SaveError::FormatError)?;
+
+ storage
+ .set_item("state", &json)
+ .map_err(|_| SaveError::WriteError)?;
+
+ let _ = wasm_timer::Delay::new(std::time::Duration::from_secs(2)).await;
+
+ Ok(())
}
}