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move loadOlm to init.ts

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Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
This commit is contained in:
Michael Telatynski 2020-03-25 13:53:28 +00:00
parent b09b47543b
commit df2b966acd
3 changed files with 82 additions and 41 deletions
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21
src/@types/global.d.ts vendored Normal file
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@ -0,0 +1,21 @@
/*
Copyright 2020 The Matrix.org Foundation C.I.C.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
interface Window {
Olm: {
init: () => Promise<void>;
};
}

42
src/vector/app.js
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@ -18,8 +18,6 @@ See the License for the specific language governing permissions and
limitations under the License.
*/
import olmWasmPath from 'olm/olm.wasm';
import React from 'react';
// add React and ReactPerf to the global namespace, to make them easier to
// access via the console
@ -44,10 +42,9 @@ import SettingsStore from "matrix-react-sdk/src/settings/SettingsStore";
import SdkConfig from "matrix-react-sdk/src/SdkConfig";
import {setTheme} from "matrix-react-sdk/src/theme";
import Olm from 'olm';
import CallHandler from 'matrix-react-sdk/src/CallHandler';
import {loadConfig, preparePlatform} from "./initial-load";
import {loadOlm} from "./init";
let lastLocationHashSet = null;
@ -308,43 +305,6 @@ export async function loadApp() {
}
}
function loadOlm() {
/* Load Olm. We try the WebAssembly version first, and then the legacy,
* asm.js version if that fails. For this reason we need to wait for this
* to finish before continuing to load the rest of the app. In future
* we could somehow pass a promise down to react-sdk and have it wait on
* that so olm can be loading in parallel with the rest of the app.
*
* We also need to tell the Olm js to look for its wasm file at the same
* level as index.html. It really should be in the same place as the js,
* ie. in the bundle directory, but as far as I can tell this is
* completely impossible with webpack. We do, however, use a hashed
* filename to avoid caching issues.
*/
return Olm.init({
locateFile: () => olmWasmPath,
}).then(() => {
console.log("Using WebAssembly Olm");
}).catch((e) => {
console.log("Failed to load Olm: trying legacy version", e);
return new Promise((resolve, reject) => {
const s = document.createElement('script');
s.src = 'olm_legacy.js'; // XXX: This should be cache-busted too
s.onload = resolve;
s.onerror = reject;
document.body.appendChild(s);
}).then(() => {
// Init window.Olm, ie. the one just loaded by the script tag,
// not 'Olm' which is still the failed wasm version.
return window.Olm.init();
}).then(() => {
console.log("Using legacy Olm");
}).catch((e) => {
console.log("Both WebAssembly and asm.js Olm failed!", e);
});
});
}
async function loadLanguage() {
const prefLang = SettingsStore.getValue("language", null, /*excludeDefault=*/true);
let langs = [];

60
src/vector/init.ts Normal file
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@ -0,0 +1,60 @@
/*
Copyright 2015, 2016 OpenMarket Ltd
Copyright 2017 Vector Creations Ltd
Copyright 2018, 2019 New Vector Ltd
Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
Copyright 2020 The Matrix.org Foundation C.I.C.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// @ts-ignore
import olmWasmPath from "olm/olm.wasm";
import Olm from 'olm';
export function loadOlm() {
/* Load Olm. We try the WebAssembly version first, and then the legacy,
* asm.js version if that fails. For this reason we need to wait for this
* to finish before continuing to load the rest of the app. In future
* we could somehow pass a promise down to react-sdk and have it wait on
* that so olm can be loading in parallel with the rest of the app.
*
* We also need to tell the Olm js to look for its wasm file at the same
* level as index.html. It really should be in the same place as the js,
* ie. in the bundle directory, but as far as I can tell this is
* completely impossible with webpack. We do, however, use a hashed
* filename to avoid caching issues.
*/
return Olm.init({
locateFile: () => olmWasmPath,
}).then(() => {
console.log("Using WebAssembly Olm");
}).catch((e) => {
console.log("Failed to load Olm: trying legacy version", e);
return new Promise((resolve, reject) => {
const s = document.createElement('script');
s.src = 'olm_legacy.js'; // XXX: This should be cache-busted too
s.onload = resolve;
s.onerror = reject;
document.body.appendChild(s);
}).then(() => {
// Init window.Olm, ie. the one just loaded by the script tag,
// not 'Olm' which is still the failed wasm version.
return window.Olm.init();
}).then(() => {
console.log("Using legacy Olm");
}).catch((e) => {
console.log("Both WebAssembly and asm.js Olm failed!", e);
});
});
}