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EthanShoeDev
2025-09-18 02:27:05 -04:00
parent 8cb3a7528a
commit d664dc26c0
12 changed files with 251 additions and 119 deletions
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73
packages/react-native-xtermjs-webview/src-internal/main.tsx
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@@ -1,7 +1,11 @@
import { Terminal } from '@xterm/xterm';
import { FitAddon } from '@xterm/addon-fit';
import { Terminal, type ITerminalOptions, type ITheme } from '@xterm/xterm';
import { Base64 } from 'js-base64';
import '@xterm/xterm/css/xterm.css';
import {
type BridgeInboundMessage,
type BridgeOutboundMessage,
} from '../src/bridge';
declare global {
interface Window {
@@ -17,7 +21,7 @@ declare global {
/**
* Post typed messages to React Native
*/
const post = (msg: unknown) =>
const post = (msg: BridgeInboundMessage) =>
window.ReactNativeWebView?.postMessage?.(JSON.stringify(msg));
/**
@@ -71,32 +75,17 @@ if (window.__FRESSH_XTERM_BRIDGE__) {
// RN -> WebView handler (write, resize, setFont, setTheme, setOptions, clear, focus)
const handler = (e: MessageEvent<string>) => {
try {
const msg = JSON.parse(e.data) as
| { type: 'write'; b64?: string; chunks?: string[] }
| { type: 'resize'; cols?: number; rows?: number }
| { type: 'setFont'; family?: string; size?: number }
| { type: 'setTheme'; background?: string; foreground?: string }
| {
type: 'setOptions';
opts: Partial<{
cursorBlink: boolean;
scrollback: number;
fontFamily: string;
fontSize: number;
}>;
}
| { type: 'clear' }
| { type: 'focus' };
const msg = JSON.parse(e.data) as BridgeOutboundMessage;
if (!msg || typeof msg.type !== 'string') return;
switch (msg.type) {
case 'write': {
if (typeof msg.b64 === 'string') {
if ('b64' in msg) {
const bytes = Base64.toUint8Array(msg.b64);
term.write(bytes);
post({ type: 'debug', message: `write(bytes=${bytes.length})` });
} else if (Array.isArray(msg.chunks)) {
} else if ('chunks' in msg && Array.isArray(msg.chunks)) {
for (const b64 of msg.chunks) {
const bytes = Base64.toUint8Array(b64);
term.write(bytes);
@@ -120,7 +109,7 @@ if (window.__FRESSH_XTERM_BRIDGE__) {
case 'setFont': {
const { family, size } = msg;
const patch: Partial<import('@xterm/xterm').ITerminalOptions> = {};
const patch: Partial<ITerminalOptions> = {};
if (family) patch.fontFamily = family;
if (typeof size === 'number') patch.fontSize = size;
if (Object.keys(patch).length) {
@@ -136,7 +125,7 @@ if (window.__FRESSH_XTERM_BRIDGE__) {
case 'setTheme': {
const { background, foreground } = msg;
const theme: Partial<import('@xterm/xterm').ITheme> = {};
const theme: Partial<ITheme> = {};
if (background) {
theme.background = background;
document.body.style.backgroundColor = background;
@@ -153,20 +142,44 @@ if (window.__FRESSH_XTERM_BRIDGE__) {
}
case 'setOptions': {
const opts = msg.opts ?? {};
const { cursorBlink, scrollback, fontFamily, fontSize } = opts;
const patch: Partial<import('@xterm/xterm').ITerminalOptions> = {};
if (typeof cursorBlink === 'boolean') patch.cursorBlink = cursorBlink;
if (typeof scrollback === 'number') patch.scrollback = scrollback;
if (fontFamily) patch.fontFamily = fontFamily;
if (typeof fontSize === 'number') patch.fontSize = fontSize;
const incoming = (msg.opts ?? {}) as Record<string, unknown>;
type PatchRecord = Partial<
Record<
keyof ITerminalOptions,
ITerminalOptions[keyof ITerminalOptions]
>
>;
const patch: PatchRecord = {};
for (const [k, v] of Object.entries(incoming)) {
// Avoid touching cols/rows via options setters here
if (k === 'cols' || k === 'rows') continue;
// Theme: also mirror background to page for seamless visuals
if (k === 'theme' && v && typeof v === 'object') {
const theme = v as ITheme;
if (theme.background) {
document.body.style.backgroundColor = theme.background;
}
patch.theme = theme;
continue;
}
const key = k as keyof ITerminalOptions;
patch[key] = v as ITerminalOptions[keyof ITerminalOptions];
}
if (Object.keys(patch).length) {
term.options = patch;
post({
type: 'debug',
message: `setOptions(${Object.keys(patch).join(',')})`,
});
if (patch.fontFamily || patch.fontSize) fitAddon.fit();
// If dimensions-affecting options changed, refit
if (
patch.fontFamily !== undefined ||
patch.fontSize !== undefined ||
patch.letterSpacing !== undefined ||
patch.lineHeight !== undefined
) {
fitAddon.fit();
}
}
break;
}