a5f3318f3b
This is a relatively obvious dispatch action that doesn't require a lot of complicated type definitions, so should be a good candidate to prove the thing works. If for some reason the thing stops working, we've done something wrong.
This also adds a bit of generic types to the dispatch call so we don't confuse the tsx parser by using `dis.dispatch(<ViewUserPayload>{...})` as it thinks that's supposed to be a component. We still get type safety, and the thing remains happy with the generics approach.
74 lines
2.7 KiB
TypeScript
74 lines
2.7 KiB
TypeScript
/*
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Copyright 2015, 2016 OpenMarket Ltd
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Copyright 2017 New Vector Ltd
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { Dispatcher } from "flux";
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import { Action } from "./actions";
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import { ActionPayload, AsyncActionPayload } from "./payloads";
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/**
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* A dispatcher for ActionPayloads (the default within the SDK).
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*/
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export class MatrixDispatcher extends Dispatcher<ActionPayload> {
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/**
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* Dispatches an event on the dispatcher's event bus.
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* @param {ActionPayload} payload Required. The payload to dispatch.
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* @param {boolean=false} sync Optional. Pass true to dispatch
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* synchronously. This is useful for anything triggering
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* an operation that the browser requires user interaction
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* for. Default false (async).
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*/
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dispatch<T extends ActionPayload>(payload: T, sync = false) {
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if (payload instanceof AsyncActionPayload) {
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payload.fn((action: ActionPayload) => {
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this.dispatch(action, sync);
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});
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return;
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}
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if (sync) {
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super.dispatch(payload);
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} else {
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// Unless the caller explicitly asked for us to dispatch synchronously,
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// we always set a timeout to do this: The flux dispatcher complains
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// if you dispatch from within a dispatch, so rather than action
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// handlers having to worry about not calling anything that might
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// then dispatch, we just do dispatches asynchronously.
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setTimeout(super.dispatch.bind(this, payload), 0);
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}
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}
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/**
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* Shorthand for dispatch({action: Action.WHATEVER}, sync). No additional
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* properties can be included with this version.
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* @param {Action} action The action to dispatch.
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* @param {boolean=false} sync Whether the dispatch should be sync or not.
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* @see dispatch(action: ActionPayload, sync: boolean)
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*/
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fire(action: Action, sync = false) {
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this.dispatch({action}, sync);
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}
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}
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export const defaultDispatcher = new MatrixDispatcher();
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const anyGlobal = <any>global;
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if (!anyGlobal.mxDispatcher) {
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anyGlobal.mxDispatcher = defaultDispatcher;
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}
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export default defaultDispatcher;
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