112 lines
3.2 KiB
JavaScript
112 lines
3.2 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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import { html } from "chrome://global/content/vendor/lit.all.mjs";
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import { MozLitElement } from "chrome://global/content/lit-utils.mjs";
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export const PLATFORM_LINUX = "linux";
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export const PLATFORM_MACOS = "macosx";
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export const PLATFORM_WINDOWS = "win";
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/**
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* A grouping of buttons. Primary button order will be set automatically based
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* on class="primary", type="submit" or autofocus attribute. Set slot="primary"
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* on a primary button that does not have primary styling to set its position.
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*
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* @tagname moz-button-group
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* @property {string} platform - The detected platform, set automatically.
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*/
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export default class MozButtonGroup extends MozLitElement {
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static queries = {
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defaultSlotEl: "slot:not([name])",
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primarySlotEl: "slot[name=primary]",
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};
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static properties = {
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platform: { state: true },
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};
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constructor() {
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super();
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this.#detectPlatform();
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}
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#detectPlatform() {
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if (typeof AppConstants !== "undefined") {
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this.platform = AppConstants.platform;
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} else if (navigator.platform.includes("Linux")) {
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this.platform = PLATFORM_LINUX;
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} else if (navigator.platform.includes("Mac")) {
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this.platform = PLATFORM_MACOS;
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} else {
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this.platform = PLATFORM_WINDOWS;
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}
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}
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onSlotchange() {
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for (let child of this.defaultSlotEl.assignedNodes()) {
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if (!(child instanceof Element)) {
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// Text nodes won't support classList or getAttribute.
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continue;
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}
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switch (child.localName) {
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case "button":
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if (
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child.classList.contains("primary") ||
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child.getAttribute("type") == "submit" ||
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child.hasAttribute("autofocus") ||
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child.hasAttribute("default")
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) {
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child.slot = "primary";
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}
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break;
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case "moz-button":
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if (child.type == "primary" || child.type == "destructive") {
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child.slot = "primary";
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}
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break;
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}
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}
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this.#reorderLightDom();
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}
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#reorderLightDom() {
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let primarySlottedChildren = [...this.primarySlotEl.assignedNodes()];
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if (this.platform == PLATFORM_WINDOWS) {
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primarySlottedChildren.reverse();
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for (let child of primarySlottedChildren) {
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child.parentElement.prepend(child);
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}
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} else {
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for (let child of primarySlottedChildren) {
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// Ensure the primary buttons are at the end of the light DOM.
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child.parentElement.append(child);
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}
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}
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}
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updated(changedProperties) {
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if (changedProperties.has("platform")) {
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this.#reorderLightDom();
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}
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}
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render() {
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let slots = [
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html` <slot @slotchange=${this.onSlotchange}></slot> `,
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html` <slot name="primary"></slot> `,
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];
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if (this.platform == PLATFORM_WINDOWS) {
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slots = [slots[1], slots[0]];
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}
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return html`
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<link
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rel="stylesheet"
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href="chrome://global/content/elements/moz-button-group.css"
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/>
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${slots}
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`;
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}
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}
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customElements.define("moz-button-group", MozButtonGroup);
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