open-nomad/ui/.storybook/config.js
Buck Doyle 576bcf554f
UI: Migrate to Storybook (#6507)
I originally planned to add component documentation, but as this dragged on and I found that JSDoc-to-Markdown sometimes needed hand-tuning, I decided to skip it and focus on replicating what was already present in Freestyle. Adding documentation is a finite task that can be revisited in the future.

My goal was to migrate everything from Freestyle with as few changes as possible. Some adaptations that I found necessary:
• the DelayedArray and DelayedTruth utilities that delay component rendering until slightly after initial render because without them:
  ◦ charts were rendering with zero width
  ◦ the JSON viewer was rendering with empty content
• Storybook in Ember renders components in a routerless/controllerless context by default, so some component stories needed changes:
  ◦ table pagination/sorting stories access to query params, which necessitates some reaching into Ember internals to start routing and dynamically generate a Storybook route/controller to render components into
  ◦ some stories have a faux controller as part of their Storybook context that hosts setInterval-linked dynamic computed properties
• some jiggery-pokery with anchor tags
  ◦ inert href='#' had to become href='javascript:;
  ◦ links that are actually meant to navigate need target='_parent' so they don’t navigate inside the Storybook iframe

Maybe some of these could be addressed by fixes in ember-cli-storybook but I’m wary of digging around in there any more than I already have, as I’ve lost a lot of time to Storybook confusion and frustrations already 😞

The STORYBOOK=true environment variable tweaks some environment settings to get things working as expected in the Storybook context.

I chose to:
• use angle bracket invocation within stories rather than have to migrate them soon after having moved to Storybook
• keep Freestyle around for now for its palette and typeface components
2020-01-21 15:46:32 -06:00

70 lines
2.2 KiB
JavaScript

/* eslint-env node */
import { addDecorator, addParameters, configure } from '@storybook/ember';
import { INITIAL_VIEWPORTS } from '@storybook/addon-viewport';
import theme from './theme.js';
addParameters({
viewport: { viewports: INITIAL_VIEWPORTS },
options: {
showPanel: true,
theme
},
});
addDecorator(storyFn => {
let { template, context } = storyFn();
let wrapperElementStyle = {
margin: '20px',
};
let applicationWrapperElement = document.createElement('div');
Object.assign(applicationWrapperElement.style, wrapperElementStyle);
let storybookElement = document.createElement('div');
storybookElement.setAttribute('id', 'storybook');
let wormhole = document.createElement('div');
wormhole.setAttribute('id', 'ember-basic-dropdown-wormhole');
storybookElement.appendChild(wormhole);
applicationWrapperElement.appendChild(storybookElement);
storybookElement.appendTo = function appendTo(el) {
el.appendChild(applicationWrapperElement);
};
/**
* Stories that require routing (table sorting/pagination) fail
* with the default iframe setup with this error:
* Path /iframe.html does not start with the provided rootURL /ui/
*
* Changing ENV.rootURL fixes that but then HistoryLocation.getURL
* fails because baseURL is undefined, which is usually set up by
* Ember CLI configuring the base element. This adds the href for
* Ember CLI to use.
*
* The default target="_parent" breaks table sorting and pagination
* by trying to navigate when clicking the query-params-changing
* elements. Removing the base target for the iframe means that
* navigation-requiring links within stories need to have the
* target themselves.
*/
let baseElement = document.querySelector('base');
baseElement.setAttribute('href', '/');
baseElement.removeAttribute('target');
return {
template,
context,
element: storybookElement,
};
});
// The order of import controls the sorting in the sidebar
configure([
require.context('../stories/theme', true, /\.stories\.js$/),
require.context('../stories/components', true, /\.stories\.js$/),
require.context('../stories/charts', true, /\.stories\.js$/),
], module);