46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
fn local_storage() -> Option<web_sys::Storage> {
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web_sys::window()?.local_storage().ok()?
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}
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/// Read data from local storage.
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pub fn local_storage_get(key: &str) -> Option<String> {
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local_storage().map(|storage| storage.get_item(key).ok())??
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}
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/// Write data to local storage.
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pub fn local_storage_set(key: &str, value: &str) {
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local_storage().map(|storage| storage.set_item(key, value));
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}
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#[cfg(feature = "persistence")]
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pub(crate) fn load_memory(ctx: &egui::Context) {
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if let Some(memory_string) = local_storage_get("egui_memory_ron") {
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match ron::from_str(&memory_string) {
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Ok(memory) => {
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ctx.memory_mut(|m| *m = memory);
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}
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Err(err) => {
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log::warn!("Failed to parse memory RON: {err}");
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}
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}
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}
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}
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#[cfg(not(feature = "persistence"))]
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pub(crate) fn load_memory(_: &egui::Context) {}
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#[cfg(feature = "persistence")]
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pub(crate) fn save_memory(ctx: &egui::Context) {
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match ctx.memory(ron::to_string) {
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Ok(ron) => {
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local_storage_set("egui_memory_ron", &ron);
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}
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Err(err) => {
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log::warn!("Failed to serialize memory as RON: {err}");
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}
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}
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}
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#[cfg(not(feature = "persistence"))]
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pub(crate) fn save_memory(_: &egui::Context) {}
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