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tear down created classes on context close

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This commit is contained in:
Yotam Mann 2019-07-16 15:41:59 -04:00
parent 4c4db4b614
commit 7f17209530
4 changed files with 34 additions and 3 deletions
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6
Tone/core/clock/Transport.ts
View file

@ -1,7 +1,7 @@
import { Time, TimeClass } from "../../core/type/Time";
import { PlaybackState } from "../../core/util/StateTimeline";
import { Signal } from "../../signal/Signal";
import { onContextInit } from "../context/ContextInitialization";
import { onContextClose, onContextInit } from "../context/ContextInitialization";
import { Gain } from "../context/Gain";
import { Param } from "../context/Param";
import { ToneWithContext, ToneWithContextOptions } from "../context/ToneWithContext";
@ -695,3 +695,7 @@ Emitter.mixin(Transport);
onContextInit(context => {
context.transport = new Transport({ context });
});
onContextClose(context => {
context.transport.dispose();
});

5
Tone/core/context/Context.ts
View file

@ -5,7 +5,7 @@ import { Omit } from "../util/Interface";
import { Timeline } from "../util/Timeline";
import { isString } from "../util/TypeCheck";
import { getAudioContext } from "./AudioContext";
import { initializeContext } from "./ContextInitialization";
import { closeContext, initializeContext } from "./ContextInitialization";
type Transport = import("../clock/Transport").Transport;
type Destination = import("./Destination").Destination;
@ -346,6 +346,9 @@ export class Context extends Emitter<"statechange" | "tick"> implements BaseAudi
if (this._context instanceof AudioContext) {
await this._context.close();
}
if (this._initialized) {
closeContext(this);
}
return this;
}

20
Tone/core/context/ContextInitialization.ts
View file

@ -16,7 +16,27 @@ export function onContextInit(cb: (ctx: Context) => void): void {
notifyNewContext.push(cb);
}
/**
* Invoke any classes which need to also be initialized when a new context is created.
*/
export function initializeContext(ctx: Context): void {
// add any additional modules
notifyNewContext.forEach(cb => cb(ctx));
}
/**
* Array of callbacks to invoke when a new context is created
*/
const notifyCloseContext: Array<(ctx: Context) => void> = [];
/**
* Used internally to tear down a Context
*/
export function onContextClose(cb: (ctx: Context) => void): void {
notifyCloseContext.push(cb);
}
export function closeContext(ctx: Context): void {
// add any additional modules
notifyCloseContext.forEach(cb => cb(ctx));
}

6
Tone/core/context/Destination.ts
View file

@ -1,7 +1,7 @@
import { Volume } from "../../component/channel/Volume";
import { connectSeries } from "../Connect";
import { optionsFromArguments } from "../util/Defaults";
import { onContextInit } from "./ContextInitialization";
import { onContextClose, onContextInit } from "./ContextInitialization";
import { Gain } from "./Gain";
import { Param } from "./Param";
import { ToneAudioNode, ToneAudioNodeOptions } from "./ToneAudioNode";
@ -115,3 +115,7 @@ export class Destination extends ToneAudioNode<DestinationOptions> {
onContextInit(context => {
context.destination = new Destination({ context });
});
onContextClose(context => {
context.destination.dispose();
});