Support web API VisualViewport

Author: Qiyu8

baselines/dom.generated.d.ts

@@ -16146,6 +16146,32 @@ declare var VideoPlaybackQuality: {
     new(): VideoPlaybackQuality;
 };
 
+interface VisualViewportEventMap {
+    "resize": UIEvent;
+    "scroll": Event;
+}
+
+interface VisualViewport extends EventTarget {
+    readonly height: number;
+    readonly offsetLeft: number;
+    readonly offsetTop: number;
+    onresize: ((this: VisualViewport, ev: UIEvent) => any) | null;
+    onscroll: ((this: VisualViewport, ev: Event) => any) | null;
+    readonly pageLeft: number;
+    readonly pageTop: number;
+    readonly scale: number;
+    readonly width: number;
+    addEventListener<K extends keyof VisualViewportEventMap>(type: K, listener: (this: VisualViewport, ev: VisualViewportEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
+    addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
+    removeEventListener<K extends keyof VisualViewportEventMap>(type: K, listener: (this: VisualViewport, ev: VisualViewportEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
+    removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+}
+
+declare var VisualViewport: {
+    prototype: VisualViewport;
+    new(): VisualViewport;
+};
+
 interface WEBGL_color_buffer_float {
     readonly FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT: GLenum;
     readonly RGBA32F_EXT: GLenum;
@@ -18454,6 +18480,7 @@ interface Window extends EventTarget, AnimationFrameProvider, GlobalEventHandler
     readonly styleMedia: StyleMedia;
     readonly toolbar: BarProp;
     readonly top: Window;
+    readonly visualViewport: VisualViewport;
     readonly window: Window & typeof globalThis;
     alert(message?: any): void;
     blur(): void;
@@ -19482,6 +19509,7 @@ declare var statusbar: BarProp;
 declare var styleMedia: StyleMedia;
 declare var toolbar: BarProp;
 declare var top: Window;
+declare var visualViewport: VisualViewport;
 declare var window: Window & typeof globalThis;
 declare function alert(message?: any): void;
 declare function blur(): void;

inputfiles/idl/Web VisualViewport API.widl

@@ -0,0 +1,20 @@
+partial interface Window {
+  [SameObject, Replaceable] readonly attribute VisualViewport visualViewport;
+};
+
+[Exposed=Window]
+interface VisualViewport : EventTarget {
+  readonly attribute double offsetLeft;
+  readonly attribute double offsetTop;
+
+  readonly attribute double pageLeft;
+  readonly attribute double pageTop;
+
+  readonly attribute double width;
+  readonly attribute double height;
+
+  readonly attribute double scale;
+
+  attribute EventHandler onresize;
+  attribute EventHandler onscroll;
+};

inputfiles/idlSources.json

@@ -643,6 +643,10 @@
         "url": "https://w3c.github.io/speech-api/",
         "title": "Web Speech API"
     },
+    {
+        "url": "https://wicg.github.io/visual-viewport/",
+        "title": "Web VisualViewport API"
+    },
     {
         "url": "https://www.w3.org/TR/webvtt1/",
         "title": "WebVTT"