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// ported from hterm.Terminal.prototype.showOverlay
// https://chromium.googlesource.com/apps/libapps/+/master/hterm/js/hterm_terminal.js
import { bind } from 'decko';
import { ITerminalAddon, Terminal } from 'xterm';
export class OverlayAddon implements ITerminalAddon {
private terminal: Terminal;
private overlayNode: HTMLElement;
private overlayTimeout?: number;
constructor() {
this.overlayNode = document.createElement('div');
this.overlayNode.style.cssText = `border-radius: 15px;
font-size: xx-large;
opacity: 0.75;
padding: 0.2em 0.5em 0.2em 0.5em;
position: absolute;
-webkit-user-select: none;
-webkit-transition: opacity 180ms ease-in;
-moz-user-select: none;
-moz-transition: opacity 180ms ease-in;`;
this.overlayNode.addEventListener(
'mousedown',
e => {
e.preventDefault();
e.stopPropagation();
},
true
);
}
activate(terminal: Terminal): void {
this.terminal = terminal;
}
dispose(): void {}
@bind
showOverlay(msg: string, timeout?: number): void {
const { terminal, overlayNode } = this;
if (!terminal.element) return;
overlayNode.style.color = '#101010';
overlayNode.style.backgroundColor = '#f0f0f0';
overlayNode.textContent = msg;
overlayNode.style.opacity = '0.75';
if (!overlayNode.parentNode) {
terminal.element.appendChild(overlayNode);
}
const divSize = terminal.element.getBoundingClientRect();
const overlaySize = overlayNode.getBoundingClientRect();
overlayNode.style.top = (divSize.height - overlaySize.height) / 2 + 'px';
overlayNode.style.left = (divSize.width - overlaySize.width) / 2 + 'px';
if (this.overlayTimeout) clearTimeout(this.overlayTimeout);
if (!timeout) return;
this.overlayTimeout = window.setTimeout(() => {
overlayNode.style.opacity = '0';
this.overlayTimeout = window.setTimeout(() => {
if (overlayNode.parentNode) {
overlayNode.parentNode.removeChild(overlayNode);
}
this.overlayTimeout = undefined;
overlayNode.style.opacity = '0.75';
}, 200);
}, timeout || 1500);
}
}
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