feat: userAgent property

Author: farfromrefug

src/webview/index.android.ts

@@ -9,6 +9,7 @@ import {
     allowsInlineMediaPlaybackProperty,
     builtInZoomControlsProperty,
     cacheModeProperty,
+    customUserAgentProperty,
     databaseStorageProperty,
     debugModeProperty,
     displayZoomControlsProperty,
@@ -1030,4 +1031,8 @@ export class AWebView extends WebViewExtBase {
     [allowsInlineMediaPlaybackProperty.setNative](enabled: boolean) {
         // not supported
     }
+
+    [customUserAgentProperty.setNative](value) {
+        this.nativeViewProtected.getSettings().setUserAgentString(value);
+    }
 }

src/webview/index.common.ts

@@ -116,6 +116,9 @@ export const useWideViewPortProperty = new Property<WebViewExtBase, boolean>({
     defaultValue: true,
     valueConverter: booleanConverter
 });
+export const customUserAgentProperty = new Property<WebViewExtBase, string>({
+    name: 'userAgent'
+});
 
 export type ViewPortValue = boolean | ViewPortProperties;
 export const viewPortProperty = new Property<WebViewExtBase, ViewPortValue>({
@@ -1517,6 +1520,7 @@ export interface WebViewExtBase {
     once(event: EventNames.RequestPermissions, callback: (args: WebConsoleEventData) => void, thisArg?: any);
 }
 
+customUserAgentProperty.register(WebViewExtBase);
 autoInjectJSBridgeProperty.register(WebViewExtBase);
 builtInZoomControlsProperty.register(WebViewExtBase);
 cacheModeProperty.register(WebViewExtBase);

src/webview/index.ios.ts

@@ -7,6 +7,7 @@ import {
     WebViewTraceCategory,
     allowsInlineMediaPlaybackProperty,
     autoInjectJSBridgeProperty,
+    customUserAgentProperty,
     debugModeProperty,
     limitsNavigationsToAppBoundDomainsProperty,
     mediaPlaybackRequiresUserActionProperty,
@@ -449,6 +450,9 @@ export class AWebView extends WebViewExtBase {
     [scrollBarIndicatorVisibleProperty.setNative](value: boolean) {
         this.updateScrollBarVisibility(value);
     }
+    [customUserAgentProperty.setNative](value) {
+        this.nativeViewProtected.customUserAgent = value;
+    }
     protected updateScrollBarVisibility(value) {
         if (!this.nativeViewProtected) {
             return;