port popout logic from discord desktop

src/main/utils/popout.ts

@@ -0,0 +1,112 @@
+/*
+ * SPDX-License-Identifier: GPL-3.0
+ * Vesktop, a desktop app aiming to give you a snappier Discord Experience
+ * Copyright (c) 2023 Vendicated and Vencord contributors
+ */
+
+import { BrowserWindow, BrowserWindowConstructorOptions } from "electron";
+
+import { handleExternalUrl } from "./makeLinksOpenExternally";
+
+const ALLOWED_FEATURES = new Set([
+    "width",
+    "height",
+    "left",
+    "top",
+    "resizable",
+    "movable",
+    "alwaysOnTop",
+    "frame",
+    "transparent",
+    "hasShadow",
+    "closable",
+    "skipTaskbar",
+    "backgroundColor",
+    "menubar",
+    "toolbar",
+    "location",
+    "directories",
+    "titleBarStyle"
+]);
+
+const MIN_POPOUT_WIDTH = 320;
+const MIN_POPOUT_HEIGHT = 180;
+const DEFAULT_POPOUT_OPTIONS: BrowserWindowConstructorOptions = {
+    title: "Discord Popout",
+    backgroundColor: "#2f3136",
+    minWidth: MIN_POPOUT_WIDTH,
+    minHeight: MIN_POPOUT_HEIGHT,
+    frame: process.platform === "linux",
+    titleBarStyle: process.platform === "darwin" ? "hidden" : undefined,
+    trafficLightPosition:
+        process.platform === "darwin"
+            ? {
+                  x: 10,
+                  y: 3
+              }
+            : undefined,
+    webPreferences: {
+        nodeIntegration: false,
+        contextIsolation: true
+    }
+};
+
+const PopoutWindows = new Map<string, BrowserWindow>();
+
+function focusWindow(window: BrowserWindow) {
+    window.setAlwaysOnTop(true);
+    window.focus();
+    window.setAlwaysOnTop(false);
+}
+
+function parseFeatureValue(feature: string) {
+    if (feature === "yes") return true;
+    if (feature === "no") return false;
+
+    const n = Number(feature);
+    if (!isNaN(n)) return n;
+
+    return feature;
+}
+
+function parseWindowFeatures(features: string) {
+    const keyValuesParsed = features.split(",");
+
+    return keyValuesParsed.reduce((features, feature) => {
+        const [key, value] = feature.split("=");
+        if (ALLOWED_FEATURES.has(key)) features[key] = parseFeatureValue(value);
+
+        return features;
+    }, {});
+}
+
+export function createOrFocusPopup(key: string, features: string) {
+    const existingWindow = PopoutWindows.get(key);
+    if (existingWindow) {
+        focusWindow(existingWindow);
+        return <const>{ action: "deny" };
+    }
+
+    return <const>{
+        action: "allow",
+        overrideBrowserWindowOptions: {
+            ...DEFAULT_POPOUT_OPTIONS,
+            ...parseWindowFeatures(features)
+        }
+    };
+}
+
+export function setupPopout(win: BrowserWindow, key: string) {
+    PopoutWindows.set(key, win);
+
+    /* win.webContents.on("will-navigate", (evt, url) => {
+        // maybe prevent if not origin match
+    })*/
+
+    win.webContents.setWindowOpenHandler(({ url }) => handleExternalUrl(url));
+
+    win.once("closed", () => {
+        win.removeAllListeners();
+        PopoutWindows.delete(key);
+    });
+}