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Listen to CHANGE_STORY_STATE and change it in the store

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This commit is contained in:
Tom Coleman 2020-02-11 20:56:13 +11:00
parent 8b08dc2080
commit a784aa1b9b
3 changed files with 19 additions and 3 deletions
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14
lib/client-api/src/story_store.test.ts
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@ -1,6 +1,6 @@
import createChannel from '@storybook/channel-postmessage';
import { toId } from '@storybook/csf';
import addons from '@storybook/addons';
import addons, { mockChannel } from '@storybook/addons';
import Events from '@storybook/core-events';
import StoryStore from './story_store';
@ -96,7 +96,7 @@ describe('preview.story_store', () => {
it('synchronously emits STORY_STATE_CHANGED if different', () => {
const onStateChanged = jest.fn();
const testChannel = createChannel({ page: 'preview' });
const testChannel = mockChannel();
testChannel.on(Events.STORY_STATE_CHANGED, onStateChanged);
const store = new StoryStore({ channel: testChannel });
@ -108,6 +108,16 @@ describe('preview.story_store', () => {
store.setStoryState('a--1', { baz: 'bing' });
expect(onStateChanged).toHaveBeenCalledWith('a--1', { foo: 'bar', baz: 'bing' });
});
it('should update if the CHANGE_STORY_STATE event is received', () => {
const testChannel = mockChannel();
const store = new StoryStore({ channel: testChannel });
addStoryToStore(store, 'a', '1', () => 0);
testChannel.emit(Events.CHANGE_STORY_STATE, 'a--1', { foo: 'bar' });
expect(store.getRawStory('a', '1').state).toEqual({ foo: 'bar' });
});
});
describe('storySort', () => {

6
lib/client-api/src/story_store.ts
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@ -84,12 +84,16 @@ export default class StoryStore extends EventEmitter {
this._stories = {};
this._revision = 0;
this._selection = {} as any;
this._channel = params.channel;
this._error = undefined;
if (params.channel) this.setChannel(params.channel);
}
setChannel = (channel: Channel) => {
this._channel = channel;
channel.on(Events.CHANGE_STORY_STATE, (id: string, newState: StoryState) =>
this.setStoryState(id, newState)
);
};
addGlobalMetadata({ parameters, decorators }: StoryMetadata) {

2
lib/core-events/src/index.ts
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@ -10,6 +10,7 @@ enum events {
STORY_ADDED = 'storyAdded',
STORY_CHANGED = 'storyChanged',
STORY_UNCHANGED = 'storyUnchanged',
CHANGE_STORY_STATE = 'changeStoryState',
STORY_STATE_CHANGED = 'storyStateChanged',
FORCE_RE_RENDER = 'forceReRender',
REGISTER_SUBSCRIPTION = 'registerSubscription',
@ -45,6 +46,7 @@ export const {
REGISTER_SUBSCRIPTION,
STORY_INIT,
STORY_ADDED,
CHANGE_STORY_STATE,
STORY_STATE_CHANGED,
STORY_RENDER,
STORY_RENDERED,