59 lines
2.1 KiB
TypeScript
59 lines
2.1 KiB
TypeScript
import type { BrowserWindow } from "electron";
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import { RuntimeError, mapCdpError, type CdpEventHandler, type CdpTransport } from "@rpa/core";
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/**
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* 内置运行浏览器传输层（宿主适配层，任务 2.3）。
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*
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* 包装 Electron BrowserWindow.webContents.debugger，实现包内的 CdpTransport 接口；
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* CdpTransport / mapCdpError / ExternalTransport（外部浏览器）已迁入 @rpa/core。
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*/
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export class EmbeddedTransport implements CdpTransport {
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readonly kind = "embedded" as const;
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private wrappers = new Map<CdpEventHandler, (event: unknown, method: string, params?: Record<string, unknown>) => void>();
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constructor(private win: BrowserWindow) {}
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get closed(): boolean {
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return this.win.isDestroyed();
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}
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async send<T = unknown>(method: string, params: Record<string, unknown> = {}): Promise<T> {
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if (this.win.isDestroyed()) {
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throw new RuntimeError("tab_unavailable", "运行浏览器已关闭", { recommendation: "重新运行流程" });
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}
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try {
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if (!this.win.webContents.debugger.isAttached()) this.win.webContents.debugger.attach("1.3");
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return (await this.win.webContents.debugger.sendCommand(method, params)) as T;
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} catch (error) {
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throw mapCdpError(error, "embedded");
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}
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}
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on(method: string, handler: CdpEventHandler): void {
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if (this.win.isDestroyed()) return;
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const wrapper = (_event: unknown, evtMethod: string, evtParams?: Record<string, unknown>) => {
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if (evtMethod === method) handler(evtParams ?? {});
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};
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this.wrappers.set(handler, wrapper);
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this.win.webContents.debugger.on("message", wrapper as never);
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}
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off(method: string, handler: CdpEventHandler): void {
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const wrapper = this.wrappers.get(handler);
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if (wrapper) {
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this.win.webContents.debugger.removeListener("message", wrapper as never);
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this.wrappers.delete(handler);
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}
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}
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async close(): Promise<void> {
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if (!this.win.isDestroyed() && this.win.webContents.debugger.isAttached()) {
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try {
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this.win.webContents.debugger.detach();
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} catch {
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// 窗口关闭过程中 detach 可能失败，忽略
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}
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}
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}
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}
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