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feat: dashboard keyboard interactions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /** | ||
| * @license | ||
| * Copyright (c) 2019 - 2024 Vaadin Ltd. | ||
| * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/ | ||
| */ | ||
|
|
||
| import { fireMove, fireRemove, fireResize } from './vaadin-dashboard-helpers.js'; | ||
|
|
||
| /** | ||
| * A controller for managing widget/section keyboard interactions. | ||
| */ | ||
| export class KeyboardController { | ||
| constructor(host) { | ||
| this.host = host; | ||
|
|
||
| host.addEventListener('focusout', (e) => this.__focusout(e)); | ||
| host.addEventListener('focusin', (e) => this.__focusin(e)); | ||
| host.addEventListener('keydown', (e) => this.__keydown(e)); | ||
| } | ||
|
|
||
| /** @private */ | ||
| __focusout() { | ||
| this.host.__focused = false; | ||
| this.host.__selected = false; | ||
| } | ||
|
|
||
| /** @private */ | ||
| __focusin(e) { | ||
| if (e.target === this.host) { | ||
| this.host.__focused = true; | ||
| } | ||
| } | ||
|
|
||
| /** @private */ | ||
| __keydown(e) { | ||
| if (e.metaKey || e.ctrlKey || !this.host.__selected) { | ||
| return; | ||
| } | ||
|
|
||
| if (e.key === 'Backspace' || e.key === 'Delete') { | ||
| e.preventDefault(); | ||
| fireRemove(this.host); | ||
| } else if (e.key === 'Escape') { | ||
| e.preventDefault(); | ||
| this.host.__selected = false; | ||
| this.host.focus(); | ||
| } else if (e.shiftKey) { | ||
| const resizeMap = { | ||
| ArrowRight: [document.dir === 'rtl' ? -1 : 1, 0], | ||
| ArrowLeft: [document.dir === 'rtl' ? 1 : -1, 0], | ||
| ArrowDown: [0, 1], | ||
| ArrowUp: [0, -1], | ||
| }; | ||
| if (resizeMap[e.key]) { | ||
| e.preventDefault(); | ||
| fireResize(this.host, ...resizeMap[e.key]); | ||
| } | ||
| } else { | ||
| const moveMap = { | ||
| ArrowRight: document.dir === 'rtl' ? -1 : 1, | ||
| ArrowLeft: document.dir === 'rtl' ? 1 : -1, | ||
| ArrowDown: 1, | ||
| ArrowUp: -1, | ||
| }; | ||
| if (moveMap[e.key]) { | ||
| e.preventDefault(); | ||
| fireMove(this.host, moveMap[e.key]); | ||
| } | ||
| } | ||
| } | ||
| } |
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