cyp/app/js/settings.js

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import Component from "./component.js";
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const prefix = "cyp";
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function loadFromStorage(key) {
return localStorage.getItem(`${prefix}-${key}`);
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}
function saveToStorage(key, value) {
return localStorage.setItem(`${prefix}-${key}`, value);
}
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class Settings extends Component {
constructor() {
super();
this._inputs = {
theme: this.querySelector("[name=theme]"),
color: Array.from(this.querySelectorAll("[name=color]"))
};
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}
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_onAppLoad() {
let mo = new MutationObserver(mrs => {
mrs.forEach(mr => this._onAppAttributeChange(mr));
});
mo.observe(this._app, {attributes:true});
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this._inputs.theme.addEventListener("change", e => this._setTheme(e.target.value));
this._inputs.color.forEach(input => {
input.addEventListener("click", e => this._setColor(e.target.value));
});
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const theme = loadFromStorage("theme");
(theme ? this._app.setAttribute("theme", theme) : this._syncTheme());
const color = loadFromStorage("color");
(color ? this._app.setAttribute("color", color) : this._syncColor());
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}
_onAppAttributeChange(mr) {
if (mr.attributeName == "theme") { this._syncTheme(); }
if (mr.attributeName == "color") { this._syncColor(); }
}
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_syncTheme() {
this._inputs.theme.value = this._app.getAttribute("theme");
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}
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_syncColor() {
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this._inputs.color.forEach(input => {
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input.checked = (input.value == this._app.getAttribute("color"));
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input.parentNode.style.color = input.value;
});
}
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_setTheme(theme) {
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saveToStorage("theme", theme);
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this._app.setAttribute("theme", theme);
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}
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_setColor(color) {
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saveToStorage("color", color);
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this._app.setAttribute("color", color);
}
_onComponentChange(c, isThis) {
this.hidden = !isThis;
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}
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}
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customElements.define("cyp-settings", Settings);