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feat: inject template styles to shadow dom #58

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feat: inject template styles to shadow dom #58

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4157b54
feat: add ability to pass styles to 'register' and inject a style tem…
loberbichler Feb 25, 2021
5a5e7fe
fix: install libharfbuzz-icu0 libenchant1c2a as packages needed for u…
loberbichler Mar 10, 2021
4d1be24
Merge branch 'master' into feat/inject-template-styles
loberbichler Aug 11, 2021
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2 changes: 1 addition & 1 deletion .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ jobs:
- name: Install webkit deps
run: |
sudo apt-get update
sudo apt-get install libgstreamer1.0-0 libbrotli1 libopus0 libwoff1 libgstreamer-plugins-base1.0-0 libgstreamer-gl1.0-0 libgstreamer-plugins-bad1.0-0 libopenjp2-7 libwebpdemux2 libhyphen0 libgles2
sudo apt-get install libgstreamer1.0-0 libbrotli1 libopus0 libwoff1 libgstreamer-plugins-base1.0-0 libgstreamer-gl1.0-0 libgstreamer-plugins-bad1.0-0 libopenjp2-7 libwebpdemux2 libhyphen0 libgles2 libharfbuzz-icu0 libenchant1c2a
- name: Cache node modules
uses: actions/cache@v1
env:
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21 changes: 17 additions & 4 deletions src/index.js
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Original file line number Diff line number Diff line change
@@ -1,11 +1,27 @@
import { h, cloneElement, render, hydrate } from 'preact';

export default function register(Component, tagName, propNames, options) {
const resolvedTagName =
tagName || Component.tagName || Component.displayName || Component.name;

function PreactElement() {
const inst = Reflect.construct(HTMLElement, [], PreactElement);
inst._vdomComponent = Component;
inst._root =
options && options.shadow ? inst.attachShadow({ mode: 'open' }) : inst;

let template = document.getElementById(`${resolvedTagName}-styles`);
if (!template && options && options.styles) {
template = document.createElement('template');
template.id = `${resolvedTagName}-styles`;
template.innerHTML = `<style id='${resolvedTagName}-styles-tag'>${options.styles}</style>`;
document.head.appendChild(template.cloneNode(true));
}

if (template) {
inst._root.appendChild(template.content.cloneNode(true));
}

return inst;
}
PreactElement.prototype = Object.create(HTMLElement.prototype);
Expand Down Expand Up @@ -49,10 +65,7 @@ export default function register(Component, tagName, propNames, options) {
});
});

return customElements.define(
tagName || Component.tagName || Component.displayName || Component.name,
PreactElement
);
return customElements.define(resolvedTagName, PreactElement);
}

function ContextProvider(props) {
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