51 lines
1.9 KiB
JavaScript
51 lines
1.9 KiB
JavaScript
/*
|
|
Copyright 2015, 2016 OpenMarket Ltd
|
|
|
|
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.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
var flux = require("flux");
|
|
|
|
class MatrixDispatcher extends flux.Dispatcher {
|
|
/**
|
|
* @param {Object} payload Required. The payload to dispatch.
|
|
* Must contain at least an 'action' key.
|
|
* @param {boolean} sync Optional. Pass true to dispatch
|
|
* synchronously. This is useful for anything triggering
|
|
* an operation that the browser requires user interaction
|
|
* for.
|
|
*/
|
|
dispatch(payload, sync) {
|
|
if (sync) {
|
|
super.dispatch(payload);
|
|
} else {
|
|
// Unless the caller explicitly asked for us to dispatch synchronously,
|
|
// we always set a timeout to do this: The flux dispatcher complains
|
|
// if you dispatch from within a dispatch, so rather than action
|
|
// handlers having to worry about not calling anything that might
|
|
// then dispatch, we just do dispatches asynchronously.
|
|
setTimeout(super.dispatch.bind(this, payload), 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX this is a big anti-pattern, and makes testing hard. Because dispatches
|
|
// happen asynchronously, it is possible for actions dispatched in one thread
|
|
// to arrive in another, with *hilarious* consequences.
|
|
if (global.mxDispatcher === undefined) {
|
|
global.mxDispatcher = new MatrixDispatcher();
|
|
}
|
|
module.exports = global.mxDispatcher;
|