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Add a sample using a webcomponent #7718

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213 changes: 213 additions & 0 deletions tests/webcomponent.html
Original file line number Diff line number Diff line change
@@ -0,0 +1,213 @@
<!doctype html>
<html>

<head>
<meta charset="utf-8" />
<title>Blockly Playground Webcomponent</title>

<script type="module">
import { COMPRESSED, loadScript } from './scripts/load.mjs';

import * as Blockly from '../build/blockly.loader.mjs';
import '../build/blocks.loader.mjs';
import { dartGenerator } from '../build/dart.loader.mjs';
import { luaGenerator } from '../build/lua.loader.mjs';
import { javascriptGenerator } from '../build/javascript.loader.mjs';
import { phpGenerator } from '../build/php.loader.mjs';
import { pythonGenerator } from '../build/python.loader.mjs';

await loadScript('../build/msg/en.js');
await loadScript('playgrounds/screenshot.js');
await loadScript('../node_modules/@blockly/dev-tools/dist/index.js');

function toParString(strings, values) {
if (strings.length === 1)
return strings.raw[0];
else {
let r = ''
for (let i = 0; i < strings.length; i++) {
r += strings[i] + (values[i] ?? '');
}
return r;
}
}

const html = function (strings, ...values) {
const template = document.createElement('template');
template.innerHTML = toParString(strings, values);
return template;
};

const css = function (strings, ...values) {
const cssStyleSheet = new CSSStyleSheet();
cssStyleSheet.replaceSync(toParString(strings, values));
return cssStyleSheet;
};

let toolbox = {
"kind": "flyoutToolbox",
"contents": [
{
"kind": "block",
"type": "controls_if"
},
{
"kind": "block",
"type": "controls_whileUntil"
},
{
type: 'text',
kind: 'block',
fields: {
TEXT: '',
},
},
]
};

class BlocklyComponent extends HTMLElement {

static template = html`
<div id="blocklyDiv" style="position: absolute; width: 100%; height: 100%;"></div>
`;

static style = css`
:host {
box-sizing: border-box;
position: absolute;
height: 100%;
width: 100%;
}`;

static blocklyStyle1;
static blocklyStyle2;

blocklyDiv;
workspace;
resizeObserver;

constructor() {
super();
this.attachShadow({ mode: 'open' });
this.shadowRoot.adoptedStyleSheets = [BlocklyComponent.style];
this.shadowRoot.appendChild(BlocklyComponent.template.content.cloneNode(true));

this.blocklyDiv = this.shadowRoot.getElementById('blocklyDiv');
this.createBlockly();
}

createBlockly() {
this.workspace = Blockly.inject(this.blocklyDiv, {
toolbox: toolbox,
renderer: 'zelos',
trashcan: true,
zoom: {
controls: true,
wheel: false,
startScale: 0.7,
maxScale: 3,
minScale: 0.3,
scaleSpeed: 1.2,
pinch: false
},
move: {
scrollbars: {
horizontal: true,
vertical: true
},
drag: true,
wheel: true
}
});

if (!BlocklyComponent.blocklyStyle1) {
BlocklyComponent.blocklyStyle1 = document.getElementById('blockly-renderer-style-zelos-classic');
this.shadowRoot.appendChild(BlocklyComponent.blocklyStyle1);
BlocklyComponent.blocklyStyle2 = document.getElementById('blockly-common-style');
this.shadowRoot.appendChild(BlocklyComponent.blocklyStyle2);
} else {
this.shadowRoot.appendChild(BlocklyComponent.blocklyStyle1.cloneNode(true));
this.shadowRoot.appendChild(BlocklyComponent.blocklyStyle2.cloneNode(true));
}
}

connectedCallback() {
Blockly.svgResize(this.workspace);

if (!resizeObserver) {
this.resizeObserver = new ResizeObserver((entries) => {
Blockly.svgResize(this.workspace);
});
this.resizeObserver.observe(this);
}
}

save() {
const state = Blockly.serialization.workspaces.save(this.workspace);
return state;
}

load(data) {
Blockly.serialization.workspaces.load(data, this.workspace);
}
}
customElements.define('blockly-component', BlocklyComponent);
</script>

<style>
html,
body {
height: 100%;
}

body {
background-color: #fff;
font-family: sans-serif;
overflow: hidden;
}

h1 {
font-weight: normal;
font-size: 140%;
}

#blocklyDiv {
float: right;
height: 95%;
width: 70%;
}

#importExport {
font-family: monospace;
}

.ioLabel>.blocklyFlyoutLabelText {
font-style: italic;
}

#blocklyDiv.renderingDebug .blockRenderDebug {
display: block;
}

.playgroundToggleOptions {
list-style: none;
padding: 0;
}

.playgroundToggleOptions li {
margin-top: 1em;
}

.zelos-renderer .blocklyFlyoutButton .blocklyText {
font-size: 1.5rem;
}
</style>
</head>

<body>
<blockly-component style="position:absolute; left: 50px; top: 50px; width: 500px; height: 600px;"></blockly-component>
<blockly-component
style="position:absolute; left: 600px; top: 50px; width: 500px; height: 600px;"></blockly-component>
</body>

</html>