Good changes

This commit is contained in:
EthanShoeDev
2025-09-20 04:08:23 -04:00
parent e1d8dc76c9
commit 0d904dfafe
10 changed files with 218 additions and 130 deletions

View File

@@ -12,7 +12,10 @@ declare global {
terminal?: Terminal;
fitAddon?: FitAddon;
terminalWriteBase64?: (data: string) => void;
ReactNativeWebView?: { postMessage?: (data: string) => void };
ReactNativeWebView?: {
postMessage?: (data: string) => void;
injectedObjectJson?: () => string | undefined;
};
__FRESSH_XTERM_BRIDGE__?: boolean;
__FRESSH_XTERM_MSG_HANDLER__?: (
e: MessageEvent<BridgeOutboundMessage>,
@@ -27,114 +30,134 @@ const sendToRn = (msg: BridgeInboundMessage) =>
* Idempotent boot guard: ensure we only install once.
* If the script happens to run twice (dev reloads, double-mounts), we bail out early.
*/
if (window.__FRESSH_XTERM_BRIDGE__) {
sendToRn({
type: 'debug',
message: 'bridge already installed; ignoring duplicate boot',
});
} else {
window.__FRESSH_XTERM_BRIDGE__ = true;
// ---- Xterm setup
const term = new Terminal({
allowProposedApi: true,
convertEol: true,
scrollback: 10000,
cursorBlink: true,
});
const fitAddon = new FitAddon();
term.loadAddon(fitAddon);
const root = document.getElementById('terminal')!;
term.open(root);
fitAddon.fit();
// Expose for debugging (typed)
window.terminal = term;
window.fitAddon = fitAddon;
term.onData((data) => {
sendToRn({ type: 'input', str: data });
});
// Remove old handler if any (just in case)
if (window.__FRESSH_XTERM_MSG_HANDLER__)
window.removeEventListener('message', window.__FRESSH_XTERM_MSG_HANDLER__!);
// RN -> WebView handler (write, resize, setFont, setTheme, setOptions, clear, focus)
const handler = (e: MessageEvent<BridgeOutboundMessage>) => {
try {
const msg = e.data;
if (!msg || typeof msg.type !== 'string') return;
// TODO: https://xtermjs.org/docs/guides/flowcontrol/#ideas-for-a-better-mechanism
const termWrite = (bStr: string) => {
const bytes = bStrToBinary(bStr);
term.write(bytes);
};
switch (msg.type) {
case 'write': {
termWrite(msg.bStr);
break;
}
case 'writeMany': {
for (const bStr of msg.chunks) {
termWrite(bStr);
}
break;
}
case 'resize': {
term.resize(msg.cols, msg.rows);
break;
}
case 'fit': {
fitAddon.fit();
break;
}
case 'setOptions': {
const newOpts: ITerminalOptions & { cols?: never; rows?: never } = {
...term.options,
...msg.opts,
theme: {
...term.options.theme,
...msg.opts.theme,
},
};
delete newOpts.cols;
delete newOpts.rows;
term.options = newOpts;
if (
'theme' in newOpts &&
newOpts.theme &&
'background' in newOpts.theme &&
newOpts.theme.background
) {
document.body.style.backgroundColor = newOpts.theme.background;
}
break;
}
case 'clear': {
term.clear();
break;
}
case 'focus': {
term.focus();
break;
}
}
} catch (err) {
window.onload = () => {
try {
if (window.__FRESSH_XTERM_BRIDGE__) {
sendToRn({
type: 'debug',
message: `message handler error: ${String(err)}`,
message: 'bridge already installed; ignoring duplicate boot',
});
return;
}
};
window.__FRESSH_XTERM_MSG_HANDLER__ = handler;
window.addEventListener('message', handler);
const injectedObjectJson =
window.ReactNativeWebView?.injectedObjectJson?.();
if (!injectedObjectJson) {
sendToRn({
type: 'debug',
message: 'injectedObjectJson not found; ignoring duplicate boot',
});
return;
}
// Initial handshake (send once)
setTimeout(() => sendToRn({ type: 'initialized' }), 50);
}
window.__FRESSH_XTERM_BRIDGE__ = true;
const injectedObject = JSON.parse(injectedObjectJson) as ITerminalOptions;
// ---- Xterm setup
const term = new Terminal(injectedObject);
const fitAddon = new FitAddon();
term.loadAddon(fitAddon);
const root = document.getElementById('terminal')!;
term.open(root);
fitAddon.fit();
// Expose for debugging (typed)
window.terminal = term;
window.fitAddon = fitAddon;
term.onData((data) => {
sendToRn({ type: 'input', str: data });
});
// Remove old handler if any (just in case)
if (window.__FRESSH_XTERM_MSG_HANDLER__)
window.removeEventListener(
'message',
window.__FRESSH_XTERM_MSG_HANDLER__!,
);
// RN -> WebView handler (write, resize, setFont, setTheme, setOptions, clear, focus)
const handler = (e: MessageEvent<BridgeOutboundMessage>) => {
try {
const msg = e.data;
if (!msg || typeof msg.type !== 'string') return;
// TODO: https://xtermjs.org/docs/guides/flowcontrol/#ideas-for-a-better-mechanism
const termWrite = (bStr: string) => {
const bytes = bStrToBinary(bStr);
term.write(bytes);
};
switch (msg.type) {
case 'write': {
termWrite(msg.bStr);
break;
}
case 'writeMany': {
for (const bStr of msg.chunks) {
termWrite(bStr);
}
break;
}
case 'resize': {
term.resize(msg.cols, msg.rows);
break;
}
case 'fit': {
fitAddon.fit();
break;
}
case 'setOptions': {
const newOpts: ITerminalOptions & { cols?: never; rows?: never } = {
...term.options,
...msg.opts,
theme: {
...term.options.theme,
...msg.opts.theme,
},
};
delete newOpts.cols;
delete newOpts.rows;
term.options = newOpts;
if (
'theme' in newOpts &&
newOpts.theme &&
'background' in newOpts.theme &&
newOpts.theme.background
) {
document.body.style.backgroundColor = newOpts.theme.background;
}
break;
}
case 'clear': {
term.clear();
break;
}
case 'focus': {
term.focus();
break;
}
}
} catch (err) {
sendToRn({
type: 'debug',
message: `message handler error: ${String(err)}`,
});
}
};
window.__FRESSH_XTERM_MSG_HANDLER__ = handler;
window.addEventListener('message', handler);
// Initial handshake (send once)
setTimeout(() => sendToRn({ type: 'initialized' }), 50);
} catch (e) {
sendToRn({
type: 'debug',
message: `error in xtermjs-webview: ${String(e)}`,
});
}
};