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Optimize icon fetching (#5791)

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Paulus Schoutsen 2020-05-07 04:07:50 -07:00 committed by GitHub
parent 5fed28808e
commit 82741e490b
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1 changed files with 28 additions and 1 deletions
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29
src/components/ha-icon.ts
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@ -38,6 +38,33 @@ get("_version", iconStore).then((version) => {
const chunks: Chunks = {};
const MDI_PREFIXES = ["mdi", "hass", "hassio", "hademo"];
let toRead: Array<[string, (string) => void]> = [];
// Queue up as many icon fetches in 1 transaction
const getIcon = (iconName: string) =>
new Promise<string>((resolve) => {
toRead.push([iconName, resolve]);
if (toRead.length > 1) {
return;
}
const results: Array<[(string) => void, IDBRequest]> = [];
iconStore
._withIDBStore("readonly", (store) => {
for (const [iconName_, resolve_] of toRead) {
results.push([resolve_, store.get(iconName_)]);
}
toRead = [];
})
.then(() => {
for (const [resolve_, request] of results) {
resolve_(request.result);
}
});
});
const findIconChunk = (icon): string => {
let lastChunk: IconMeta;
for (const chunk of iconMetadata.parts) {
@ -101,7 +128,7 @@ export class HaIcon extends LitElement {
this._noMdi = false;
const iconName = icon[1];
const cachedPath: string = await get(iconName, iconStore);
const cachedPath: string = await getIcon(iconName);
if (cachedPath) {
this._path = cachedPath;
return;