56 lines
2.6 KiB
JavaScript
56 lines
2.6 KiB
JavaScript
import { spawn } from 'node:child_process';
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const DEST = 'io.qvac.Jarvis.Shell';
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const PATH = '/io/qvac/Jarvis/Shell';
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const IFACE = 'io.qvac.Jarvis.Shell';
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function parseGdbusString(out) {
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const match = String(out).match(/'((?:\\.|[^'\\])*)'/);
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if (!match) throw new Error('GNOME Shell helper returned no string');
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return match[1].replace(/\\(.)/g, '$1');
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}
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export class ShellProvider {
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constructor({ listWindows, focusedWindow, focusWindow, proxy, spawnImpl = spawn, timeoutMs = 2000 } = {}) {
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this.listWindowsImpl = listWindows; this.focusedWindowImpl = focusedWindow; this.focusWindowImpl = focusWindow; this.proxy = proxy;
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this.spawnImpl = spawnImpl; this.timeoutMs = timeoutMs;
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}
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_call(method, args = []) {
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return new Promise((resolve, reject) => {
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const child = this.spawnImpl('gdbus', ['call', '--session', '--dest', DEST, '--object-path', PATH, '--method', `${IFACE}.${method}`, ...args], { stdio: ['ignore', 'pipe', 'pipe'] });
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let out = ''; let err = ''; let settled = false;
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const timer = setTimeout(() => { if (settled) return; settled = true; child.kill('SIGTERM'); reject(new Error('GNOME Shell helper timed out')); }, this.timeoutMs);
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const done = (fn) => (value) => { if (settled) return; settled = true; clearTimeout(timer); fn(value); };
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child.stdout.on('data', (d) => { out += d; });
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child.stderr.on('data', (d) => { err += d; });
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child.on('error', done(reject));
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child.on('close', (code) => done(code === 0 ? resolve : reject)(code === 0 ? parseGdbusString(out) : new Error(err.trim() || `GNOME Shell helper exited ${code}`)));
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});
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}
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async connect() {
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if (this.proxy || this.listWindowsImpl) return this;
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await this._call('ListWindows');
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return this;
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}
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async windows() {
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if (this.proxy) return { available: true, windows: JSON.parse(await this.proxy.ListWindows()) };
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if (this.listWindowsImpl) return { available: true, windows: await this.listWindowsImpl() };
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try { return { available: true, windows: JSON.parse(await this._call('ListWindows')) }; } catch (error) { return { available: false, reason: error.message, windows: [] }; }
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}
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async focused() {
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if (this.proxy) return JSON.parse(await this.proxy.FocusedWindow());
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if (this.focusedWindowImpl) return this.focusedWindowImpl();
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try { return JSON.parse(await this._call('FocusedWindow')); } catch { return null; }
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}
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async focus(id) {
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if (this.proxy) return this.proxy.FocusWindow(BigInt(id));
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if (this.focusWindowImpl) return this.focusWindowImpl(id);
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await this._call('FocusWindow', [String(id)]);
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}
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}
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