feat: global clearFocus and requestFocus

Author: farfromrefug

src/core/index.android.ts

@@ -154,6 +154,13 @@ class ViewWithElevationAndRipple extends View {
             }
         }
     }
+    public requestFocus() {
+        this.focus();
+    }
+    public clearFocus() {
+        handleClearFocus(this.nativeViewProtected);
+        ad.dismissSoftInput(this.nativeViewProtected);
+    }
 
     getDefaultElevation(): number {
         const result = this instanceof Button ? 2 : 0;

src/core/index.d.ts

@@ -1,5 +1,12 @@
 import { Color } from '@nativescript/core';
 
+declare module '@nativescript/core/ui/core/view' {
+    interface View {
+        clearFocus();
+        requestFocus();
+    }
+}
+
 export interface TypographyOptions {
     fontFamily?: string;
     fontSize?: number;

src/core/index.ios.ts

@@ -106,9 +106,7 @@ export class Themer {
 
 export const themer = new Themer();
 
-export function install() {
-
-}
+export function install() {}
 
 export function getRippleColor(color: string | Color): UIColor {
     if (color) {
@@ -190,6 +188,13 @@ class ViewWithElevationAndRipple extends View {
             this.shadowLayer.elevation = elevation;
         }
     }
+
+    public requestFocus() {
+        this.focus();
+    }
+    public clearFocus() {
+        this.nativeViewProtected.resignFirstResponder();
+    }
     [rippleColorProperty.setNative](color: Color) {
         this.getOrCreateRippleController();
         this.inkTouchController.rippleView.rippleColor = getRippleColor(color);