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Commit cbf9a746 authored by Neuber, Eugen Ramon's avatar Neuber, Eugen Ramon :speech_balloon:
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Add a provider web component plus demo 

See issue #31
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That's all there is to it!
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# Provider Web Component
[GitLab Repository](git@gitlab.tugraz.at:dbp/web-components/toolkit.git)
## Usage
```html
<provider></provider>
```
## Attributes
- `init` (optional): set your vars to values
- example `<provider init="foo=bar"></provider>`
- `id` (optional): set an id, useful for debugging
- example `<provider id="p-1"></provider>`
## Local development
```bash
# get the source
git clone git@gitlab.tugraz.at:dbp/web-components/toolkit.git
cd toolkit/packages/provider
# install dependencies (make sure you have npm version 4+ installed, so symlinks to the git submodules are created automatically)
yarn install
# constantly build dist/bundle.js and run a local web-server on port 8002
yarn run watch
# run tests
yarn test
```
Jump to <http://localhost:8002> and you should get a demo page.
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packages/provider/assets/favicon.ico

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<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<script type="module" src="dbp-provider-demo.js"></script>
<!--
This is for debugging only:
- requests no provider can answer bubble up to the top
- unhandled requests are logged in the console
-->
<script>
window.addEventListener('inherit', e => console.log('window eventListener("inherit",..) name "' + e.detail.name + '" not found.'));
window.addEventListener('subscribe', e => console.log('window eventListener("subscribe",..) name "' + e.detail.name + '" not found.'));
window.addEventListener('unsubscribe', e => console.log('window eventListener("unsubscribe",..) name "' + e.detail.name + '" not found.'));
</script>
</head>
<body>
<dbp-provider-demo lang="de"></dbp-provider-demo>
<p>version: <span style="color: white; background-color: black;"><%= buildInfo.info %></span></p>
</body>
</html>
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module.exports = {
input: [
'src/*.js',
],
output: './',
options: {
debug: false,
removeUnusedKeys: true,
lngs: ['en','de'],
resource: {
loadPath: 'src/i18n/{{lng}}/{{ns}}.json',
savePath: 'src/i18n/{{lng}}/{{ns}}.json'
},
},
}
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// Trick to use the auto-downloaded puppeteer chrome binary
process.env.CHROME_BIN = require('puppeteer').executablePath();
module.exports = function(config) {
config.set({
basePath: 'dist',
frameworks: ['mocha', 'chai'],
files: [
{pattern: './*.js', included: true, watched: true, served: true, type: 'module'},
{pattern: './**/*', included: false, watched: true, served: true},
],
autoWatch: true,
browsers: ['ChromeHeadlessNoSandbox'],
customLaunchers: {
ChromeHeadlessNoSandbox: {
base: 'ChromeHeadless',
flags: ['--no-sandbox']
}
},
singleRun: false,
logLevel: config.LOG_ERROR
});
}
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{
"name": "dbp-provider",
"version": "1.0.0",
"main": "src/index.js",
"license": "LGPL-2.1-or-later",
"private": true,
"devDependencies": {
"@rollup/plugin-commonjs": "^14.0.0",
"@rollup/plugin-json": "^4.1.0",
"@rollup/plugin-node-resolve": "^8.1.0",
"@rollup/plugin-url": "^5.0.1",
"chai": "^4.2.0",
"i18next-scanner": "^2.10.2",
"karma": "^5.1.0",
"karma-chai": "^0.1.0",
"karma-chrome-launcher": "^3.0.0",
"karma-mocha": "^2.0.1",
"mocha": "^8.0.1",
"puppeteer": "^2.1.1",
"rollup": "^2.19.0",
"rollup-plugin-consts": "^1.0.1",
"rollup-plugin-copy": "^3.1.0",
"rollup-plugin-delete": "^2.0.0",
"rollup-plugin-serve": "^1.0.1",
"rollup-plugin-terser": "^6.1.0"
},
"dependencies": {
"@open-wc/scoped-elements": "^1.1.1",
"lit-element": "^2.3.1",
"dbp-auth": "^1.0.0",
"dbp-common": "^1.0.0"
},
"scripts": {
"clean": "rm dist/*",
"build-local": "rollup -c",
"build-dev": "rollup -c --environment BUILD:development",
"build-prod": "rollup -c --environment BUILD:production",
"build-demo": "rollup -c --environment BUILD:demo",
"build-test": "rollup -c --environment BUILD:test",
"i18next": "i18next-scanner",
"watch": "rollup -c --watch",
"watch-local": "yarn run watch",
"watch-dev": "rollup -c --watch --environment BUILD:development",
"test": "rollup -c --environment BUILD:test && karma start --singleRun"
}
}
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import glob from 'glob';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import copy from 'rollup-plugin-copy';
import {terser} from "rollup-plugin-terser";
import json from '@rollup/plugin-json';
import serve from 'rollup-plugin-serve';
import url from "@rollup/plugin-url";
import consts from 'rollup-plugin-consts';
import del from 'rollup-plugin-delete';
import emitEJS from 'rollup-plugin-emit-ejs'
import {getPackagePath} from '../../rollup.utils.js';
const pkg = require('./package.json');
const build = (typeof process.env.BUILD !== 'undefined') ? process.env.BUILD : 'local';
console.log("build: " + build);
function getBuildInfo() {
const child_process = require('child_process');
const url = require('url');
let remote = child_process.execSync('git config --get remote.origin.url').toString().trim();
let commit = child_process.execSync('git rev-parse --short HEAD').toString().trim();
let parsed = url.parse(remote);
// convert git urls
if (parsed.protocol === null) {
parsed = url.parse('git://' + remote.replace(":", "/"));
parsed.protocol = 'https:';
}
let newPath = parsed.path.slice(0, parsed.path.lastIndexOf('.'));
let newUrl = parsed.protocol + '//' + parsed.host + newPath + '/commit/' + commit;
return {
info: commit,
url: newUrl,
time: new Date().toISOString(),
env: build
}
}
export default (async () => {
return {
input: (build != 'test') ? ['src/dbp-provider.js', 'src/dbp-provider-demo.js'] : glob.sync('test/**/*.js'),
output: {
dir: 'dist',
entryFileNames: '[name].js',
chunkFileNames: 'shared/[name].[hash].[format].js',
format: 'esm',
sourcemap: true
},
onwarn: function (warning, warn) {
// keycloak bundled code uses eval
if (warning.code === 'EVAL') {
return;
}
warn(warning);
},
plugins: [
del({
targets: 'dist/*'
}),
consts({
environment: build,
buildInfo: getBuildInfo(),
}),
emitEJS({
src: 'assets',
include: ['**/*.ejs', '**/.*.ejs'],
data: {
getUrl: (p) => {
return url.resolve(basePath, p);
},
getPrivateUrl: (p) => {
return url.resolve(`${basePath}local/${pkg.name}/`, p);
},
name: pkg.name,
environment: build,
buildInfo: getBuildInfo()
}
}),
resolve(),
commonjs(),
url({
limit: 0,
include: [
await getPackagePath('select2', '**/*.css'),
],
emitFiles: true,
fileName: 'shared/[name].[hash][extname]'
}),
json(),
(build !== 'local' && build !== 'test') ? terser() : false,
copy({
targets: [
{src: 'assets/index.html', dest: 'dist'},
{src: await getPackagePath('dbp-common', 'assets/icons/*.svg'), dest: 'dist/local/dbp-common/icons'},
{src: 'assets/favicon.ico', dest:'dist'},
],
}),
(process.env.ROLLUP_WATCH === 'true') ? serve({contentBase: 'dist', host: '127.0.0.1', port: 8002}) : false
]
};
})();
\ No newline at end of file
packages/provider/src/dbp-provider-demo.js 0 → 100644
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− 0
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import {i18n} from './i18n.js';
import {css, html, LitElement} from 'lit-element';
import {ScopedElementsMixin} from '@open-wc/scoped-elements';
import {AuthKeycloak, LoginButton} from 'dbp-auth';
import * as commonUtils from 'dbp-common/utils';
import * as commonStyles from 'dbp-common/styles';
import {Provider} from 'dbp-provider';
class ProviderDemo extends ScopedElementsMixin(LitElement) {
constructor() {
super();
this.lang = 'de';
}
static get scopedElements() {
return {
'dbp-auth-keycloak': AuthKeycloak,
'dbp-login-button': LoginButton,
'dbp-provider': Provider,
'dbp-consumer': DemoConsumer,
};
}
static get properties() {
return {
lang: { type: String },
};
}
connectedCallback() {
super.connectedCallback();
i18n.changeLanguage(this.lang);
}
static get styles() {
// language=css
return [
commonStyles.getThemeCSS(),
commonStyles.getGeneralCSS(),
css`
h1.title {margin-bottom: 1em;}
div.container {margin-bottom: 1.5em; padding-left:20px;}
`
];
}
render() {
return html`
<section class="section">
<p>Provider <em>"root"</em> is the top most in hirachy:</p>
<dbp-provider id="root"
init="availability=global"
></dbp-provider>
<pre>
&lt;dbp-provider id="root" init="availability=global" &gt;&lt;/dbp-provider&gt;
</pre>
<div class="container">
<h1 class="title">Provider-Demo</h1>
</div>
<div class="container">
<dbp-auth-keycloak lang="${this.lang}" url="https://auth-dev.tugraz.at/auth" realm="tugraz" client-id="auth-dev-mw-frontend-local" load-person try-login></dbp-auth-keycloak>
<dbp-login-button lang="${this.lang}" show-image></dbp-login-button>
</div>
<div class="container">
<h2>Provider</h2>
<p>Provider <em>"demo"</em> has only <em>border-color</em> to offer:</p>
<dbp-provider id="demo"
init="bc=blue"
></dbp-provider>
<pre>
&lt;dbp-provider id="demo" init="bc=blue" &gt;&lt;/dbp-provider&gt;
</pre>
<p>Provider <em>"foo-bar"</em> has some values in its store:</p>
<dbp-provider id="foo-bar"
init="foo=9,bar=20"
></dbp-provider>
<pre>
&lt;dbp-provider id="foo-bar" init="foo=9,bar=20" &gt;&lt;/dbp-provider&gt;
</pre>
<h2>Consumer</h2>
<p>Consumer <em>"c1"</em> will only subscribe to <em>border-color</em></p>
<pre>
&lt;dbp-consumer id="c1" subscribe="bc:border-color" &gt;&lt;/dbp-consumer&gt;
</pre>
<dbp-consumer id="c1"
subscribe="bc:border-color"
></dbp-consumer>
<p>Consumer <em>"c2"</em> subscribes to <em>foo</em></p>
<pre>
&lt;dbp-consumer id="c2" subscribe="foo:foo" &gt;&lt;/dbp-consumer&gt;
</pre>
<dbp-consumer id="c2"
subscribe="foo:foo"
></dbp-consumer>
<p>Consumer <em>"c3"</em> subscribes for <em>status</em> wich is provided as <em>availability</em></p>
<pre>
&lt;dbp-consumer id="c3" subscribe="availability:status" border-color="orange" &gt;&lt;/dbp-consumer&gt;
</pre>
<dbp-consumer id="c3"
subscribe="availability:status"
border-color="orange"
></dbp-consumer>
<p>Consumer <em>"c4"</em> subscribes for <em>status</em> wich is provided as <em>unknown-name</em> which does not exist...</p>
<pre>
&lt;dbp-consumer id="c4" subscribe="unknown-name:status" border-color="darkgray" &gt;&lt;/dbp-consumer&gt;
</pre>
<dbp-consumer id="c4"
subscribe="unknown-name:status"
border-color="darkgray"
></dbp-consumer>
</div>
</section>
`;
}
}
commonUtils.defineCustomElement('dbp-provider-demo', ProviderDemo);
// =======================================================
class Consumer extends HTMLElement {
constructor() {
super();
this.connected = false;
this.deferInherited = false;
this.deferSubscribe = false;
this.deferUnSubscribe = false;
// default values
this.inherit = '';
this.subscribe = '';
this.unsubscribe = '';
this.attachShadow({mode: 'open'});
console.log('Consumer constructor()');
}
connectedCallback() {
console.log('Consumer(' + this.id() + ') connectedCallback()');
if (this.deferInherited) {
const attrs = this.inherit.split(',');
attrs.forEach(element => this.askProviderFor(element));
this.deferInherited = false;
}
if (this.deferUnSubscribe) {
const attrs = this.unsubscribe.split(',');
attrs.forEach(element => this.subscribeProviderFor(element));
this.deferSubscribe = false;
this.unsubscribe = '';
}
if (this.deferSubscribe) {
const attrs = this.subscribe.split(',');
attrs.forEach(element => this.subscribeProviderFor(element));
this.deferSubscribe = false;
}
this.connected = true;
}
static get observedAttributes() {
return ['inherit', 'subscribe'];
}
attributeChangedCallback(name, oldValue, newValue) {
console.log('Consumer(' + this.id() + ') attributeChangesCallback( ' + name + ', ' + oldValue + ', ' + newValue + ')');
switch(name) {
case 'inherit':
this.inherit = newValue;
if (this.connected && typeof newValue === 'string') {
const attrs = newValue.split(',');
attrs.forEach(element => this.askProviderFor(element));
} else {
this.deferInherited = newValue.length > 0;
}
break;
case 'subscribe':
if (this.subscribe && this.subscribe.length > 0) {
if (this.connected) {
const attrs = this.subscribe.split(',');
attrs.forEach(element => this.unSubscribeProviderFor(element));
} else {
this.deferUnSubscribe = this.subscribe.length > 0;
this.unsubscribe = this.subscribe;
}
}
if (newValue !== null) {
this.subscribe = newValue;
if (this.connected) {
const attrs = newValue.split(',');
attrs.forEach(element => this.subscribeProviderFor(element));
} else {
this.deferSubscribe = newValue && newValue.length > 0;
}
}
break;
default:
console.log('unknown attribute "' + name + '".');
}
}
id() {
return this.getAttribute('id');
}
render() {}
askProviderFor(element) {
console.log('Consumer(' + this.id() + ') askProviderFor( ' + element + ' )');
const pair = element.trim().split(':');
const global = pair[0];
const local = pair[1];
const that = this;
const event = new CustomEvent('inherit',
{
bubbles: true,
detail: {
name: global,
callback: (value) => {
console.log('Consumer(' + that.id() + ') ask/Callback ' + global + ' -> ' + local + ' = ' + value);
this.attributeChangedCallback(local, that[local], value);
}
}
});
this.parentElement.dispatchEvent(event);
//console.dir(event);
}
subscribeProviderFor(element) {
console.log('Consumer(' + this.id() + ') subscribeProviderFor( ' + element + ' )');
const pair = element.trim().split(':');
const global = pair[0];
const local = pair[1];
const that = this;
const event = new CustomEvent('subscribe',
{
bubbles: true,
detail: {
name: global,
callback: (value) => {
console.log('Consumer(' + that.id() + ') sub/Callback ' + global + ' -> ' + local + ' = ' + value);
this.attributeChangedCallback(local, that[local], value);
},
sender: this,
}
});
this.parentElement.dispatchEvent(event);
}
unSubscribeProviderFor(element) {
console.log('Consumer(' + this.id() + ') unSubscribeProviderFor( ' + element + ' )');
const pair = element.trim().split(':');
const global = pair[0];
const event = new CustomEvent('unsubscribe',
{
bubbles: true,
detail: {
name: global,
sender: this,
}
});
this.parentElement.dispatchEvent(event);
}
}
class DemoConsumer extends Consumer
{
constructor() {
super();
// default values
this.foo = 100;
this.bar = 900;
this.ping = 0;
this['border-color'] = 'green';
this.status = 'local';
console.log('DemoConsumer constructor()');
}
connectedCallback() {
super.connectedCallback();
console.log('DemoConsumer(' + this.id() + ') connectedCallback()');
this.render();
}
static get observedAttributes() {
return [ ...Consumer.observedAttributes, 'foo', 'bar', 'gong', 'border-color', 'ping'];
}
attributeChangedCallback(name, oldValue, newValue) {
console.log('DemoConsumer(' + this.id() + ') attributeChangesCallback( ' + name + ', ' + oldValue + ', ' + newValue + ')');
switch(name) {
case 'foo':
this.foo = parseInt(newValue);
break;
case 'bar':
this.bar = parseInt(newValue);
break;
case 'status':
this.status = newValue;
break;
case 'border-color':
this['border-color'] = newValue;
break;
default:
super.attributeChangedCallback(name, oldValue, newValue);
}
this.render();
}
render() {
if (! this.connected) {
return;
}
console.log('DemoConsumer(' + this.id() + ') render()');
const sum = this.foo + this.bar;
this.shadowRoot.innerHTML = `
<div style="border: ${this['border-color']} dotted; padding: 10px;">
<table style="width:200px;">
<tr style="background-color: #aaa;">
<th style="text-align: left;">Item</th>
<th style="text-align: right;">Price</th>
</tr>
<tr><td>foo</td><td style="text-align: right;">${this.foo}</td></tr>
<tr><td>bar</td><td style="text-align: right;">${this.bar}</td></tr>
<tr><td>sum</td><td style="text-align: right;">${sum}</td></tr>
</table>
<p>Status: <b>${this.status}</b></p>
</div>
`;
}
}
customElements.define('dbp-consumer', DemoConsumer);
packages/provider/src/dbp-provider.js 0 → 100644
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− 0
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import * as commonUtils from 'dbp-common/utils';
import {Provider} from './provider.js';
commonUtils.defineCustomElement('dbp-provider', Provider);
packages/provider/src/demo.js 0 → 100644
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− 0
View file @ cbf9a746
import './dbp-provider-demo.js';
\ No newline at end of file
packages/provider/src/i18n.js 0 → 100644
+ 6
− 0
View file @ cbf9a746
import {createInstance} from 'dbp-common/i18next.js';
import de from './i18n/de/translation.json';
import en from './i18n/en/translation.json';
export const i18n = createInstance({en: en, de: de}, 'de', 'en');
\ No newline at end of file
packages/provider/src/i18n/de/translation.json 0 → 100644
+ 5
− 0
View file @ cbf9a746
{
"provider": {
}
}
\ No newline at end of file
packages/provider/src/i18n/en/translation.json 0 → 100644
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− 0
View file @ cbf9a746
{
"provider": {
}
}
\ No newline at end of file
packages/provider/src/index.js 0 → 100644
+ 3
− 0
View file @ cbf9a746
import {Provider} from './provider.js';
export {Provider};
\ No newline at end of file
packages/provider/src/provider.js 0 → 100644
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− 0
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export class Provider extends HTMLElement {
constructor() {
super();
this.callbackStore = [];
console.log('Provider constructor()');
}
static get observedAttributes() {
return ['init'];
}
attributeChangedCallback(name, oldValue, newValue) {
console.log('Provider(' + this.id() + ') attribute "' + name + '" changed from "' + oldValue + '" to "' + newValue + '".');
switch(name) {
case 'init':
this.init = newValue;
if (newValue) {
const attrs = newValue.split(',');
attrs.forEach(element => {
const pair = element.trim().split('=');
const name = pair[0].trim();
const value = pair[1].trim().replace('"', '').replace("'", '');
if (name.length > 0) {
this[name] = value;
this.callbackStore.forEach(item => {
if (item.name === name) {
item.callback(value);
}
});
}
});
}
break;
default:
console.log('unknown attribute "' + name + '".');
}
}
connectedCallback() {
console.log('Provider(' + this.id() + ') connectedCallback()');
const that = this;
const parent = this.parentElement;
parent.addEventListener('inherit', function (e) {
if (that[e.detail.name]) {
console.log('Provider(' + that.id() + ') eventListener("inherit",..) name "' + e.detail.name + '" found.');
//console.dir(e.detail);
e.detail.callback(that[e.detail.name]);
e.stopPropagation();
}
}, false);
parent.addEventListener('subscribe', function (e) {
const name = e.detail.name;
if (that[name]) {
console.log('Provider(' + that.id() + ') eventListener("subscribe",..) name "' + name + '" found.');
that.callbackStore.push({name: name, callback: e.detail.callback, sender: e.detail.sender});
e.detail.callback(that[name]);
e.stopPropagation();
}
}, false);
parent.addEventListener('unsubscribe', function (e) {
const name = e.detail.name;
const sender = e.detail.sender;
if (that[name]) {
console.log('Provider(' + that.id() + ') eventListener("unsubscribe",..) name "' + name + '" found.');
that.callbackStore.forEach(item => {
if (item.sender === sender && item.name === name) {
const index = that.callbackStore.indexOf(item);
that.callbackStore.splice(index, 1);
console.log('Provider(' + that.id() + ') eventListener for name "' + name + '" removed.')
}
});
e.stopPropagation();
}
}, false);
}
id() {
return this.getAttribute('id');
}
}
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