Files
MorphDoc/apps/desktop/src/desktop-application-controller.ts
T
SkyJourney 83e6559c2c release: 发布 v0.5.1
新增能力:内置 4 套红头、3 套正式文档和 3 套标书主题,支持主题推荐页边距、页面装饰、页眉页脚和页码;增加结构化公文、项目报告及标书 Front Matter,内置 Fandol 中文字体、两份教程和 14 份主题示例。

桌面工作流:重组更多菜单,增加新建、保存、另存为快捷键和未保存确认;另存为后跟随新路径,主题示例自动切换主题,Desktop 发行包完整携带教程、示例与字体。

问题修复:修正红头标题居中与正式文档字体;围栏代码按正文宽度自动换行,长内容安全断行,至少两行即可在当前页分页,并统一保留 8px 左侧内容留白;Docker Web 镜像正确打包 samples。

兼容与部署:未声明主题推荐设置时继续使用 16mm 默认页边距;Web 隐藏不适用的另存为。正式镜像 yixiong/md-to-pdf:v0.5.1 内容 ID 为 sha256:72f519a69bfd6cb2f6df30c2be938e58ceb6f20e4748a32551874de3d436b276,Compose 健康运行。

验证结果:最终修复前 65 个测试文件、286 项测试通过,最终代码块与主题定向测试 27 项通过;全项目类型检查、生产构建和 git diff --check 通过。容器检出 14 套主题、17 份 Markdown,代码块回归 PDF 为 2 页且无越界。NSIS SHA-256 为 676CCE73D782B0B15AC6BC68F253CFBC4740383583E4DAA98F746EDF9999C5CC,ZIP SHA-256 为 82BF6ADF1200604F145CC86FA3ED193955CF6741EBEE3DF8953483515CFF621F。
2026-07-29 16:58:17 +08:00

967 lines
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TypeScript
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import {
app,
BrowserWindow,
dialog,
ipcMain,
screen,
shell,
type IpcMainInvokeEvent,
type Rectangle
} from "electron";
import {
mkdir,
realpath,
stat,
writeFile
} from "node:fs/promises";
import path from "node:path";
import {
MAXIMUM_MARKDOWN_LENGTH,
type ApplicationService
} from "@md-to-pdf/application";
import {
DESKTOP_CONSUME_PENDING_MARKDOWN,
DESKTOP_CREATE_NEW_WINDOW,
DESKTOP_DISCARD_PENDING_MARKDOWN,
DESKTOP_GENERATE_PDF,
DESKTOP_GET_THEME_CSS,
DESKTOP_LIST_THEMES,
DESKTOP_MARKDOWN_OPENED,
DESKTOP_OPEN_DOCUMENT_LINK,
DESKTOP_OPEN_MARKDOWN,
DESKTOP_OPEN_THEME_DIRECTORY,
DESKTOP_REFRESH_THEMES,
DESKTOP_RENDER_MARKDOWN,
DESKTOP_RESOLVE_WINDOW_CLOSE,
DESKTOP_SAVE_MARKDOWN,
DESKTOP_SAVE_MARKDOWN_AS,
DESKTOP_SAVE_PDF,
DESKTOP_SET_DOCUMENT_DIRTY,
DESKTOP_START_NEW_MARKDOWN,
DESKTOP_WINDOW_CLOSE_REQUESTED
} from "./channels.js";
import {
parseMarkdownRenderRequest,
parseThemeId
} from "./application-contract.js";
import { ElectronPdfGenerator } from "./electron-pdf-generator.js";
import { resolveDesktopDocumentLinkAction } from "./desktop-document-link.js";
import {
isMarkdownFilePath,
createMarkdownDocumentKey,
readMarkdownFileSnapshot,
type MarkdownFileSnapshot
} from "./markdown-file.js";
import { parsePagedDocumentPayload } from "./pdf-contract.js";
import {
loadWindowState,
resolveWindowBounds,
saveWindowState,
type WindowState
} from "./window-state.js";
import { getWindowCloseDecision } from "./window-close-policy.js";
const DEFAULT_WINDOW_SIZE = { width: 1440, height: 960 };
const MINIMUM_WINDOW_SIZE = { width: 1024, height: 720 };
const CASCADE_OFFSET = 32;
const FOCUS_CHECK_SUPPRESSION_MS = 800;
type MarkdownOpenReason = "open" | "reload" | "replace";
interface PendingOpenedMarkdown {
snapshot: MarkdownFileSnapshot;
reason: MarkdownOpenReason;
}
interface WindowSession {
window: BrowserWindow;
dirty: boolean;
allowClose: boolean;
closeRequestPending: boolean;
currentFilePath: string | undefined;
documentKey: string | undefined;
documentRoot: string | undefined;
baselineHash: string | undefined;
pendingOpenedMarkdown: PendingOpenedMarkdown | undefined;
focusCheckRunning: boolean;
suppressFocusCheckUntil: number;
}
export interface DesktopApplicationControllerOptions {
applicationService: ApplicationService;
applicationUrl: string;
renderUrl: string;
preloadPath: string;
pdfPreloadPath: string;
iconPath: string;
themeDirectory: string;
windowStatePath: string;
}
function focusWindow(window: BrowserWindow) {
if (window.isDestroyed()) {
return;
}
if (window.isMinimized()) {
window.restore();
}
window.show();
window.focus();
}
export class DesktopApplicationController {
readonly #applicationService: ApplicationService;
readonly #applicationUrl: string;
readonly #applicationOrigin: string;
readonly #preloadPath: string;
readonly #iconPath: string;
readonly #themeDirectory: string;
readonly #windowStatePath: string;
readonly #pdfGenerator: ElectronPdfGenerator;
readonly #sessions = new Map<number, WindowSession>();
readonly #documentSessions = new Map<string, WindowSession>();
#primarySession: WindowSession | undefined;
#savedWindowState: WindowState | undefined;
#saveWindowStateTimer: NodeJS.Timeout | undefined;
#pendingWindowStateWrite = Promise.resolve();
#latestWindowState: WindowState | undefined;
constructor(options: DesktopApplicationControllerOptions) {
this.#applicationService = options.applicationService;
this.#applicationUrl = options.applicationUrl;
this.#applicationOrigin = new URL(options.applicationUrl).origin;
this.#preloadPath = options.preloadPath;
this.#iconPath = options.iconPath;
this.#themeDirectory = options.themeDirectory;
this.#windowStatePath = options.windowStatePath;
this.#pdfGenerator = new ElectronPdfGenerator({
renderUrl: options.renderUrl,
preloadPath: options.pdfPreloadPath
});
}
async initialize() {
this.#savedWindowState = await loadWindowState(
this.#windowStatePath
);
this.#registerIpcHandlers();
}
async createWindow(filePath?: string) {
let pendingSnapshot: MarkdownFileSnapshot | undefined;
if (filePath) {
pendingSnapshot = await readMarkdownFileSnapshot(
filePath,
MAXIMUM_MARKDOWN_LENGTH
);
const existing = this.#findDocumentSession(
pendingSnapshot.documentKey
);
if (existing) {
focusWindow(existing.window);
return existing.window;
}
}
return this.#createWindow(pendingSnapshot);
}
async #createWindow(
pendingSnapshot?: MarkdownFileSnapshot,
startBlank = false
) {
const isPrimary = !this.#primarySession;
const restoredWindowState = isPrimary
? this.#latestWindowState ?? this.#savedWindowState
: undefined;
const initialBounds = this.#resolveInitialBounds(isPrimary);
const window = new BrowserWindow({
title: `Markdown PDF 导出器 v${app.getVersion()}`,
icon: this.#iconPath,
...initialBounds,
minWidth: Math.min(
MINIMUM_WINDOW_SIZE.width,
initialBounds.width
),
minHeight: Math.min(
MINIMUM_WINDOW_SIZE.height,
initialBounds.height
),
autoHideMenuBar: true,
show: false,
webPreferences: {
contextIsolation: true,
nodeIntegration: false,
sandbox: true,
preload: this.#preloadPath
}
});
const session: WindowSession = {
window,
dirty: false,
allowClose: false,
closeRequestPending: false,
currentFilePath: undefined,
documentKey: undefined,
documentRoot: undefined,
baselineHash: undefined,
pendingOpenedMarkdown: pendingSnapshot
? { snapshot: pendingSnapshot, reason: "open" }
: undefined,
focusCheckRunning: false,
suppressFocusCheckUntil: 0
};
this.#sessions.set(window.webContents.id, session);
if (isPrimary) {
this.#primarySession = session;
this.#captureWindowState();
this.#bindPrimaryWindowState(session);
}
this.#lockDownWindow(window);
this.#bindWindowLifecycle(session);
window.once("ready-to-show", () => {
if (
isPrimary &&
restoredWindowState?.maximized &&
!window.isDestroyed()
) {
window.maximize();
}
window.show();
});
const targetUrl = new URL(this.#applicationUrl);
if (startBlank) {
targetUrl.searchParams.set("new", "1");
}
await window.loadURL(targetUrl.href);
return window;
}
async openExternalMarkdown(filePath: string) {
const snapshot = await readMarkdownFileSnapshot(
filePath,
MAXIMUM_MARKDOWN_LENGTH
);
const existing = this.#findDocumentSession(snapshot.documentKey);
if (existing) {
focusWindow(existing.window);
return;
}
await this.#createWindow(snapshot);
}
focusMostRecentWindow() {
const focused = BrowserWindow.getFocusedWindow();
const focusedSession = focused
? [...this.#sessions.values()].find(
(session) => session.window === focused
)
: undefined;
if (focusedSession) {
focusWindow(focusedSession.window);
return true;
}
const session = [...this.#sessions.values()].at(-1);
if (!session) {
return false;
}
focusWindow(session.window);
return true;
}
async flushWindowState() {
if (this.#saveWindowStateTimer) {
clearTimeout(this.#saveWindowStateTimer);
this.#saveWindowStateTimer = undefined;
}
this.#captureWindowState();
await this.#persistWindowState();
}
async closeResources() {
await this.#pdfGenerator.close();
}
#resolveInitialBounds(isPrimary: boolean): Rectangle {
const displays = screen
.getAllDisplays()
.map((display) => display.workArea);
const primaryWorkArea = screen.getPrimaryDisplay().workArea;
if (isPrimary) {
return resolveWindowBounds(
(this.#latestWindowState ?? this.#savedWindowState)?.bounds,
displays,
primaryWorkArea,
DEFAULT_WINDOW_SIZE,
MINIMUM_WINDOW_SIZE
);
}
const reference =
BrowserWindow.getFocusedWindow() ??
[...this.#sessions.values()].at(-1)?.window;
const referenceBounds =
reference && !reference.isDestroyed()
? reference.getNormalBounds()
: primaryWorkArea;
return resolveWindowBounds(
{
x: referenceBounds.x + CASCADE_OFFSET,
y: referenceBounds.y + CASCADE_OFFSET,
width: referenceBounds.width,
height: referenceBounds.height
},
displays,
primaryWorkArea,
DEFAULT_WINDOW_SIZE,
MINIMUM_WINDOW_SIZE
);
}
#lockDownWindow(window: BrowserWindow) {
window.webContents.setWindowOpenHandler(() => ({ action: "deny" }));
window.webContents.on("will-navigate", (event, targetUrl) => {
if (new URL(targetUrl).origin !== this.#applicationOrigin) {
event.preventDefault();
}
});
const applicationSession = window.webContents.session;
applicationSession.setPermissionCheckHandler(() => false);
applicationSession.setPermissionRequestHandler(
(_webContents, _permission, callback) => callback(false)
);
}
#bindWindowLifecycle(session: WindowSession) {
const { window } = session;
const webContentsId = window.webContents.id;
window.on("focus", () => {
void this.#checkForExternalChange(session);
});
window.on("close", (event) => {
const decision = getWindowCloseDecision(session);
if (decision === "allow") {
return;
}
event.preventDefault();
if (decision === "request") {
session.closeRequestPending = true;
session.window.webContents.send(
DESKTOP_WINDOW_CLOSE_REQUESTED
);
}
});
window.on("closed", () => {
const wasPrimary = this.#primarySession === session;
this.#sessions.delete(webContentsId);
if (
session.documentKey &&
this.#documentSessions.get(session.documentKey) === session
) {
this.#documentSessions.delete(session.documentKey);
}
if (wasPrimary) {
this.#promotePrimarySession();
}
});
}
#promotePrimarySession() {
const nextPrimary = [...this.#sessions.values()]
.filter((session) => !session.window.isDestroyed())
.at(-1);
this.#primarySession = nextPrimary;
if (!nextPrimary) {
return;
}
this.#bindPrimaryWindowState(nextPrimary);
this.#captureWindowState();
}
async #checkForExternalChange(session: WindowSession) {
if (
session.focusCheckRunning ||
session.window.isDestroyed() ||
!session.currentFilePath ||
!session.baselineHash ||
Date.now() < session.suppressFocusCheckUntil
) {
return;
}
session.focusCheckRunning = true;
try {
let snapshot: MarkdownFileSnapshot;
try {
snapshot = await readMarkdownFileSnapshot(
session.currentFilePath,
MAXIMUM_MARKDOWN_LENGTH
);
} catch (error) {
await dialog.showMessageBox(session.window, {
type: "error",
title: "无法检查文件",
message: "当前 Markdown 文件已被删除或无法读取。",
detail:
error instanceof Error ? error.message : "未知文件错误",
buttons: ["确定"],
defaultId: 0,
noLink: true
});
return;
}
if (snapshot.contentHash === session.baselineHash) {
return;
}
const result = await dialog.showMessageBox(session.window, {
type: "warning",
title: "文件已在外部修改",
message: session.dirty
? "文件已在外部修改,重新载入会丢弃当前未保存内容。"
: "文件已在外部修改,是否重新载入?",
detail: snapshot.filePath,
buttons: ["暂不载入", "重新载入"],
defaultId: 1,
cancelId: 0,
noLink: true
});
if (result.response === 1) {
session.baselineHash = snapshot.contentHash;
session.pendingOpenedMarkdown = {
snapshot,
reason: "reload"
};
session.window.webContents.send(
DESKTOP_MARKDOWN_OPENED,
"reload"
);
}
} finally {
session.focusCheckRunning = false;
session.suppressFocusCheckUntil =
Date.now() + FOCUS_CHECK_SUPPRESSION_MS;
}
}
#bindPrimaryWindowState(session: WindowSession) {
const schedule = () => {
this.#captureWindowState();
if (this.#saveWindowStateTimer) {
clearTimeout(this.#saveWindowStateTimer);
}
this.#saveWindowStateTimer = setTimeout(() => {
this.#saveWindowStateTimer = undefined;
void this.#persistWindowState();
}, 2_000);
};
session.window.on("move", schedule);
session.window.on("resize", schedule);
session.window.on("maximize", schedule);
session.window.on("unmaximize", schedule);
}
#captureWindowState() {
const window = this.#primarySession?.window;
if (!window || window.isDestroyed()) {
return;
}
this.#latestWindowState = {
version: 1,
bounds: window.getNormalBounds(),
maximized: window.isMaximized()
};
}
#persistWindowState() {
if (!this.#latestWindowState) {
return this.#pendingWindowStateWrite;
}
const state = structuredClone(this.#latestWindowState);
this.#pendingWindowStateWrite = this.#pendingWindowStateWrite
.catch(() => undefined)
.then(() => saveWindowState(this.#windowStatePath, state))
.catch((error: unknown) => {
console.warn("无法保存窗口状态", error);
});
return this.#pendingWindowStateWrite;
}
#findDocumentSession(documentKey: string) {
const committed = this.#documentSessions.get(documentKey);
if (committed) {
return committed;
}
return [...this.#sessions.values()].find(
(session) =>
session.pendingOpenedMarkdown?.snapshot.documentKey ===
documentKey
);
}
#getSession(event: IpcMainInvokeEvent) {
const session = this.#sessions.get(event.sender.id);
let origin: string | undefined;
try {
origin = event.senderFrame
? new URL(event.senderFrame.url).origin
: undefined;
} catch {
origin = undefined;
}
if (
!session ||
event.sender !== session.window.webContents ||
origin !== this.#applicationOrigin
) {
throw new Error("拒绝未授权的桌面请求");
}
return session;
}
#commitSnapshot(
session: WindowSession,
snapshot: MarkdownFileSnapshot
) {
if (
session.documentKey &&
this.#documentSessions.get(session.documentKey) === session
) {
this.#documentSessions.delete(session.documentKey);
}
session.currentFilePath = snapshot.filePath;
session.documentKey = snapshot.documentKey;
session.documentRoot = path.dirname(snapshot.filePath);
session.baselineHash = snapshot.contentHash;
session.dirty = false;
this.#documentSessions.set(snapshot.documentKey, session);
}
#clearDocument(session: WindowSession) {
if (
session.documentKey &&
this.#documentSessions.get(session.documentKey) === session
) {
this.#documentSessions.delete(session.documentKey);
}
session.currentFilePath = undefined;
session.documentKey = undefined;
session.documentRoot = undefined;
session.baselineHash = undefined;
session.pendingOpenedMarkdown = undefined;
session.dirty = false;
}
#registerIpcHandlers() {
ipcMain.handle(
DESKTOP_OPEN_DOCUMENT_LINK,
async (event, unsafeHref: unknown) => {
const session = this.#getSession(event);
if (
typeof unsafeHref !== "string" ||
unsafeHref.length === 0 ||
unsafeHref.length > 8_192
) {
throw new Error("文档链接无效");
}
try {
await this.#openDocumentLink(session, unsafeHref);
} catch (error) {
await dialog.showMessageBox(session.window, {
type: "error",
title: "无法打开链接",
message:
error instanceof Error
? error.message
: "无法打开文档链接",
detail: unsafeHref,
buttons: ["确定"],
defaultId: 0,
noLink: true
});
}
}
);
ipcMain.handle(DESKTOP_OPEN_MARKDOWN, async (event) => {
const session = this.#getSession(event);
const selection = await dialog.showOpenDialog(session.window, {
title: "打开 Markdown",
properties: ["openFile"],
filters: [
{ name: "Markdown 文件", extensions: ["md", "markdown"] }
]
});
const filePath = selection.filePaths[0];
if (selection.canceled || !filePath) {
return undefined;
}
const snapshot = await readMarkdownFileSnapshot(
filePath,
MAXIMUM_MARKDOWN_LENGTH
);
const existing = this.#findDocumentSession(snapshot.documentKey);
if (existing && existing !== session) {
focusWindow(existing.window);
return undefined;
}
this.#commitSnapshot(session, snapshot);
return snapshot.document;
});
ipcMain.handle(DESKTOP_CONSUME_PENDING_MARKDOWN, async (event) => {
const session = this.#getSession(event);
const pending = session.pendingOpenedMarkdown;
session.pendingOpenedMarkdown = undefined;
if (!pending) {
return undefined;
}
this.#commitSnapshot(session, pending.snapshot);
return pending.snapshot.document;
});
ipcMain.handle(DESKTOP_DISCARD_PENDING_MARKDOWN, async (event) => {
const session = this.#getSession(event);
session.pendingOpenedMarkdown = undefined;
});
ipcMain.handle(DESKTOP_START_NEW_MARKDOWN, async (event) => {
this.#clearDocument(this.#getSession(event));
});
ipcMain.handle(DESKTOP_CREATE_NEW_WINDOW, async (event) => {
this.#getSession(event);
await this.#createWindow(undefined, true);
});
ipcMain.handle(
DESKTOP_RESOLVE_WINDOW_CLOSE,
async (event, unsafeClose: unknown) => {
if (typeof unsafeClose !== "boolean") {
throw new Error("窗口关闭决策无效");
}
const session = this.#getSession(event);
session.closeRequestPending = false;
session.suppressFocusCheckUntil =
Date.now() + FOCUS_CHECK_SUPPRESSION_MS;
if (unsafeClose && !session.window.isDestroyed()) {
session.allowClose = true;
session.window.close();
}
}
);
ipcMain.handle(
DESKTOP_SET_DOCUMENT_DIRTY,
async (event, unsafeDirty: unknown) => {
if (typeof unsafeDirty !== "boolean") {
throw new Error("文档修改状态无效");
}
this.#getSession(event).dirty = unsafeDirty;
}
);
const saveMarkdown = async (
event: IpcMainInvokeEvent,
unsafeFileName: unknown,
unsafeMarkdown: unknown,
forceSaveAs: boolean
) => {
const session = this.#getSession(event);
if (
typeof unsafeFileName !== "string" ||
unsafeFileName.length === 0 ||
unsafeFileName.length > 500 ||
typeof unsafeMarkdown !== "string" ||
unsafeMarkdown.length > MAXIMUM_MARKDOWN_LENGTH
) {
throw new Error("Markdown 保存参数无效");
}
let targetPath = session.currentFilePath;
if (forceSaveAs || !targetPath) {
const suggestedName = /\.(?:md|markdown)$/iu.test(
path.basename(unsafeFileName)
)
? path.basename(unsafeFileName)
: `${path.basename(unsafeFileName)}.md`;
const selection = await dialog.showSaveDialog(session.window, {
title: forceSaveAs
? "另存为 Markdown"
: "保存 Markdown",
defaultPath:
forceSaveAs && session.currentFilePath
? session.currentFilePath
: path.join(app.getPath("documents"), suggestedName),
filters: [
{
name: "Markdown 文件",
extensions: ["md", "markdown"]
}
]
});
if (selection.canceled || !selection.filePath) {
return undefined;
}
targetPath = /\.(?:md|markdown)$/iu.test(selection.filePath)
? selection.filePath
: `${selection.filePath}.md`;
}
let targetKey = createMarkdownDocumentKey(
path.resolve(targetPath)
);
try {
targetKey = createMarkdownDocumentKey(
await realpath(targetPath)
);
} catch (error) {
if (
!(
error instanceof Error &&
"code" in error &&
error.code === "ENOENT"
)
) {
throw error;
}
}
const existing = this.#findDocumentSession(targetKey);
if (existing && existing !== session) {
focusWindow(existing.window);
throw new Error("该 Markdown 已在另一个窗口中打开");
}
await writeFile(targetPath, unsafeMarkdown, "utf8");
const snapshot = await readMarkdownFileSnapshot(
targetPath,
MAXIMUM_MARKDOWN_LENGTH
);
const canonicalExisting = this.#findDocumentSession(
snapshot.documentKey
);
if (canonicalExisting && canonicalExisting !== session) {
focusWindow(canonicalExisting.window);
throw new Error("该 Markdown 已在另一个窗口中打开");
}
this.#commitSnapshot(session, snapshot);
return { fileName: snapshot.document.fileName };
};
ipcMain.handle(
DESKTOP_SAVE_MARKDOWN,
(event, unsafeFileName: unknown, unsafeMarkdown: unknown) =>
saveMarkdown(
event,
unsafeFileName,
unsafeMarkdown,
false
)
);
ipcMain.handle(
DESKTOP_SAVE_MARKDOWN_AS,
(event, unsafeFileName: unknown, unsafeMarkdown: unknown) =>
saveMarkdown(
event,
unsafeFileName,
unsafeMarkdown,
true
)
);
ipcMain.handle(DESKTOP_OPEN_THEME_DIRECTORY, async (event) => {
this.#getSession(event);
await mkdir(this.#themeDirectory, { recursive: true });
const errorMessage = await shell.openPath(this.#themeDirectory);
if (errorMessage) {
throw new Error(
`无法打开自定义主题目录:${errorMessage}`
);
}
return this.#themeDirectory;
});
ipcMain.handle(DESKTOP_REFRESH_THEMES, async (event) => {
this.#getSession(event);
this.#applicationService.invalidateThemes();
});
ipcMain.handle(
DESKTOP_RENDER_MARKDOWN,
async (event, unsafeRequest: unknown) => {
const session = this.#getSession(event);
return this.#applicationService.render(
parseMarkdownRenderRequest(unsafeRequest),
session.documentRoot
? {
localRoot: session.documentRoot,
allowUnrestrictedLocalFiles: true
}
: {}
);
}
);
ipcMain.handle(DESKTOP_LIST_THEMES, async (event) => {
this.#getSession(event);
return this.#applicationService.listThemes();
});
ipcMain.handle(
DESKTOP_GET_THEME_CSS,
async (event, unsafeThemeId: unknown) => {
this.#getSession(event);
const css = await this.#applicationService.getThemeCss(
parseThemeId(unsafeThemeId)
);
if (css === undefined) {
throw new Error("未找到指定主题");
}
return css;
}
);
ipcMain.handle(
DESKTOP_GENERATE_PDF,
async (event, unsafePayload: unknown) => {
this.#getSession(event);
const result = await this.#pdfGenerator.generate(
parsePagedDocumentPayload(unsafePayload)
);
return {
pdf: result.pdf,
pageCount: result.pageCount,
echartsErrors: result.echartsErrors,
mermaidErrors: result.mermaidErrors
};
}
);
ipcMain.handle(
DESKTOP_SAVE_PDF,
async (
event,
unsafeFileName: unknown,
unsafePdf: unknown
) => {
const session = this.#getSession(event);
if (
typeof unsafeFileName !== "string" ||
unsafeFileName.length === 0 ||
unsafeFileName.length > 500 ||
!(unsafePdf instanceof Uint8Array) ||
unsafePdf.byteLength === 0 ||
unsafePdf.byteLength > 200 * 1024 * 1024
) {
throw new Error("PDF 保存参数无效");
}
const suggestedName = path.basename(unsafeFileName).endsWith(
".pdf"
)
? path.basename(unsafeFileName)
: `${path.basename(unsafeFileName)}.pdf`;
const selection = await dialog.showSaveDialog(session.window, {
title: "导出 PDF",
defaultPath: path.join(
app.getPath("documents"),
suggestedName
),
filters: [{ name: "PDF 文件", extensions: ["pdf"] }]
});
if (selection.canceled || !selection.filePath) {
return false;
}
await writeFile(selection.filePath, unsafePdf);
return true;
}
);
}
async #openDocumentLink(
session: WindowSession,
href: string
) {
const action = resolveDesktopDocumentLinkAction(
href,
session.currentFilePath
);
if (action.type === "ignore" || action.type === "anchor") {
return;
}
if (action.type === "external") {
await shell.openExternal(action.href);
return;
}
let targetStats;
try {
targetStats = await stat(action.filePath);
} catch (error) {
if (
error instanceof Error &&
"code" in error &&
error.code === "ENOENT"
) {
await dialog.showMessageBox(session.window, {
type: "warning",
title: "找不到文件",
message: "链接指向的本地文件不存在。",
detail: action.filePath,
buttons: ["确定"],
defaultId: 0,
noLink: true
});
return;
}
throw error;
}
if (
targetStats.isFile() &&
isMarkdownFilePath(action.filePath)
) {
const snapshot = await readMarkdownFileSnapshot(
action.filePath,
MAXIMUM_MARKDOWN_LENGTH
);
const existing = this.#findDocumentSession(
snapshot.documentKey
);
if (existing) {
focusWindow(existing.window);
return;
}
const result = await dialog.showMessageBox(session.window, {
type: "question",
title: "打开 Markdown",
message: `如何打开 ${snapshot.document.fileName}`,
detail: session.dirty
? "当前窗口有未保存修改;选择当前窗口会放弃这些修改。"
: snapshot.filePath,
buttons: ["取消", "当前窗口打开", "新窗口打开"],
defaultId: 2,
cancelId: 0,
noLink: true
});
if (result.response === 1) {
session.pendingOpenedMarkdown = {
snapshot,
reason: "replace"
};
session.window.webContents.send(
DESKTOP_MARKDOWN_OPENED,
"replace"
);
} else if (result.response === 2) {
await this.#createWindow(snapshot);
}
return;
}
const errorMessage = await shell.openPath(action.filePath);
if (errorMessage) {
throw new Error(`系统无法打开该路径:${errorMessage}`);
}
}
}