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Transition all remaining messaging over (delete the old stuff)

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Travis Ralston
2020-09-30 20:20:31 -06:00
parent 9377306b81
commit f27071ee64
13 changed files with 29 additions and 868 deletions
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src/widgets/WidgetApi.ts
-222
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@@ -1,222 +0,0 @@
/*
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.
*/
// Dev note: This is largely inspired by Dimension. Used with permission.
// https://github.com/turt2live/matrix-dimension/blob/4f92d560266635e5a3c824606215b84e8c0b19f5/web/app/shared/services/scalar/scalar-widget.api.ts
import { randomString } from "matrix-js-sdk/src/randomstring";
import { EventEmitter } from "events";
import { objectClone } from "../utils/objects";
export enum Capability {
Screenshot = "m.capability.screenshot",
Sticker = "m.sticker",
AlwaysOnScreen = "m.always_on_screen",
}
export enum KnownWidgetActions {
GetSupportedApiVersions = "supported_api_versions",
TakeScreenshot = "screenshot",
GetCapabilities = "capabilities",
SendEvent = "send_event",
UpdateVisibility = "visibility",
GetOpenIDCredentials = "get_openid",
ReceiveOpenIDCredentials = "openid_credentials",
SetAlwaysOnScreen = "set_always_on_screen",
ClientReady = "im.vector.ready",
Terminate = "im.vector.terminate",
Hangup = "im.vector.hangup",
}
export type WidgetAction = KnownWidgetActions | string;
export enum WidgetApiType {
ToWidget = "toWidget",
FromWidget = "fromWidget",
}
export interface WidgetRequest {
api: WidgetApiType;
widgetId: string;
requestId: string;
data: any;
action: WidgetAction;
}
export interface ToWidgetRequest extends WidgetRequest {
api: WidgetApiType.ToWidget;
}
export interface FromWidgetRequest extends WidgetRequest {
api: WidgetApiType.FromWidget;
response: any;
}
export interface OpenIDCredentials {
accessToken: string;
tokenType: string;
matrixServerName: string;
expiresIn: number;
}
/**
* Handles Element <--> Widget interactions for embedded/standalone widgets.
*
* Emitted events:
* - terminate(wait): client requested the widget to terminate.
* Call the argument 'wait(promise)' to postpone the finalization until
* the given promise resolves.
*/
export class WidgetApi extends EventEmitter {
private readonly origin: string;
private inFlightRequests: { [requestId: string]: (reply: FromWidgetRequest) => void } = {};
private readonly readyPromise: Promise<any>;
private readyPromiseResolve: () => void;
private openIDCredentialsCallback: () => void;
public openIDCredentials: OpenIDCredentials;
/**
* Set this to true if your widget is expecting a ready message from the client. False otherwise (default).
*/
public expectingExplicitReady = false;
constructor(currentUrl: string, private widgetId: string, private requestedCapabilities: string[]) {
super();
this.origin = new URL(currentUrl).origin;
this.readyPromise = new Promise<any>(resolve => this.readyPromiseResolve = resolve);
window.addEventListener("message", event => {
if (event.origin !== this.origin) return; // ignore: invalid origin
if (!event.data) return; // invalid schema
if (event.data.widgetId !== this.widgetId) return; // not for us
const payload = <WidgetRequest>event.data;
if (payload.api === WidgetApiType.ToWidget && payload.action) {
console.log(`[WidgetAPI] Got request: ${JSON.stringify(payload)}`);
if (payload.action === KnownWidgetActions.GetCapabilities) {
this.onCapabilitiesRequest(<ToWidgetRequest>payload);
if (!this.expectingExplicitReady) {
this.readyPromiseResolve();
}
} else if (payload.action === KnownWidgetActions.ClientReady) {
this.readyPromiseResolve();
// Automatically acknowledge so we can move on
this.replyToRequest(<ToWidgetRequest>payload, {});
} else if (payload.action === KnownWidgetActions.Terminate
|| payload.action === KnownWidgetActions.Hangup) {
// Finalization needs to be async, so postpone with a promise
let finalizePromise = Promise.resolve();
const wait = (promise) => {
finalizePromise = finalizePromise.then(() => promise);
};
const emitName = payload.action === KnownWidgetActions.Terminate ? 'terminate' : 'hangup';
this.emit(emitName, wait);
Promise.resolve(finalizePromise).then(() => {
// Acknowledge that we're shut down now
this.replyToRequest(<ToWidgetRequest>payload, {});
});
} else if (payload.action === KnownWidgetActions.ReceiveOpenIDCredentials) {
// Save OpenID credentials
this.setOpenIDCredentials(<ToWidgetRequest>payload);
this.replyToRequest(<ToWidgetRequest>payload, {});
} else {
console.warn(`[WidgetAPI] Got unexpected action: ${payload.action}`);
}
} else if (payload.api === WidgetApiType.FromWidget && this.inFlightRequests[payload.requestId]) {
console.log(`[WidgetAPI] Got reply: ${JSON.stringify(payload)}`);
const handler = this.inFlightRequests[payload.requestId];
delete this.inFlightRequests[payload.requestId];
handler(<FromWidgetRequest>payload);
} else {
console.warn(`[WidgetAPI] Unhandled payload: ${JSON.stringify(payload)}`);
}
});
}
public setOpenIDCredentials(value: WidgetRequest) {
const data = value.data;
if (data.state === 'allowed') {
this.openIDCredentials = {
accessToken: data.access_token,
tokenType: data.token_type,
matrixServerName: data.matrix_server_name,
expiresIn: data.expires_in,
}
} else if (data.state === 'blocked') {
this.openIDCredentials = null;
}
if (['allowed', 'blocked'].includes(data.state) && this.openIDCredentialsCallback) {
this.openIDCredentialsCallback()
}
}
public requestOpenIDCredentials(credentialsResponseCallback: () => void) {
this.openIDCredentialsCallback = credentialsResponseCallback;
this.callAction(
KnownWidgetActions.GetOpenIDCredentials,
{},
this.setOpenIDCredentials,
);
}
public waitReady(): Promise<any> {
return this.readyPromise;
}
private replyToRequest(payload: ToWidgetRequest, reply: any) {
if (!window.parent) return;
const request: ToWidgetRequest & {response?: any} = objectClone(payload);
request.response = reply;
window.parent.postMessage(request, this.origin);
}
private onCapabilitiesRequest(payload: ToWidgetRequest) {
return this.replyToRequest(payload, {capabilities: this.requestedCapabilities});
}
public callAction(action: WidgetAction, payload: any, callback: (reply: FromWidgetRequest) => void) {
if (!window.parent) return;
const request: FromWidgetRequest = {
api: WidgetApiType.FromWidget,
widgetId: this.widgetId,
action: action,
requestId: randomString(160),
data: payload,
response: {}, // Not used at this layer - it's used when the client responds
};
if (callback) {
this.inFlightRequests[request.requestId] = callback;
}
console.log(`[WidgetAPI] Sending request: `, request);
window.parent.postMessage(request, "*");
}
public setAlwaysOnScreen(onScreen: boolean): Promise<any> {
return new Promise<any>(resolve => {
this.callAction(KnownWidgetActions.SetAlwaysOnScreen, {value: onScreen}, null);
resolve(); // SetAlwaysOnScreen is currently fire-and-forget, but that could change.
});
}
}
src/widgets/WidgetType.ts
+1
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@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
limitations under the License.
*/
// TODO: Move to matrix-widget-api
export class WidgetType {
public static readonly JITSI = new WidgetType("m.jitsi", "jitsi");
public static readonly STICKERPICKER = new WidgetType("m.stickerpicker", "m.stickerpicker");