87 lines
2.3 KiB
JavaScript
87 lines
2.3 KiB
JavaScript
// preload.js - Optimized version
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const { contextBridge, ipcRenderer } = require('electron');
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// Cache DOM references for performance
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let domReady = false;
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window.addEventListener('DOMContentLoaded', () => {
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domReady = true;
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console.log("Browser UI loaded.");
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});
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// Optimized API exposure with error handling and caching
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const electronAPI = {
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send: (ch, ...args) => {
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try {
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return ipcRenderer.send(ch, ...args);
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} catch (err) {
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console.error('IPC send error:', err);
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}
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},
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// Send message to embedding page (webview host)
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sendToHost: (ch, ...args) => {
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try {
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return ipcRenderer.sendToHost(ch, ...args);
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} catch (err) {
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console.error('IPC sendToHost error:', err);
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}
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},
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invoke: (ch, ...args) => {
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try {
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return ipcRenderer.invoke(ch, ...args);
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} catch (err) {
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console.error('IPC invoke error:', err);
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return Promise.reject(err);
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}
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},
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on: (ch, fn) => {
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try {
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return ipcRenderer.on(ch, (e, ...args) => fn(...args));
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} catch (err) {
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console.error('IPC on error:', err);
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}
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},
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// Add removeListener for cleanup
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removeListener: (ch, fn) => {
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try {
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return ipcRenderer.removeListener(ch, fn);
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} catch (err) {
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console.error('IPC removeListener error:', err);
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}
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}
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};
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// Cache for bookmarks to reduce IPC calls
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let bookmarksCache = null;
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let bookmarksCacheTime = 0;
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const CACHE_DURATION = 5000; // 5 seconds
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const bookmarksAPI = {
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load: async () => {
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const now = Date.now();
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if (bookmarksCache && (now - bookmarksCacheTime) < CACHE_DURATION) {
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return bookmarksCache;
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}
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try {
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bookmarksCache = await ipcRenderer.invoke('load-bookmarks');
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bookmarksCacheTime = now;
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return bookmarksCache;
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} catch (err) {
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console.error('Bookmarks load error:', err);
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return [];
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}
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},
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save: async (data) => {
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try {
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bookmarksCache = data; // Update cache immediately
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bookmarksCacheTime = Date.now();
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return await ipcRenderer.invoke('save-bookmarks', data);
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} catch (err) {
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console.error('Bookmarks save error:', err);
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return false;
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}
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}
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};
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// Expose APIs to main world
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contextBridge.exposeInMainWorld('electronAPI', electronAPI);
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contextBridge.exposeInMainWorld('bookmarksAPI', bookmarksAPI); |