feat(text-input): add onPress to affix adornment

src/components/TextInput/Adornment/TextInputAffix.tsx

@@ -1,7 +1,9 @@
 import React from 'react';
 import {
   Animated,
+  GestureResponderEvent,
   LayoutChangeEvent,
+  Pressable,
   StyleProp,
   StyleSheet,
   Text,
@@ -21,6 +23,14 @@ export type Props = {
    */
   text: string;
   onLayout?: (event: LayoutChangeEvent) => void;
+  /**
+   * Function to execute on press.
+   */
+  onPress?: (e: GestureResponderEvent) => void;
+  /**
+   * Accessibility label for the affix. This is read by the screen reader when the user taps the affix.
+   */
+  accessibilityLabel?: string;
   /**
    * Style that is passed to the Text element.
    */
@@ -115,6 +125,8 @@ const TextInputAffix = ({
   textStyle: labelStyle,
   theme: themeOverrides,
   onLayout: onTextLayout,
+  onPress,
+  accessibilityLabel = text,
 }: Props) => {
   const theme = useInternalTheme(themeOverrides);
   const { AFFIX_OFFSET } = getConstants(theme.isV3);
@@ -141,7 +153,7 @@ const TextInputAffix = ({
 
   const textColor = getTextColor({ theme, disabled });
 
-  return (
+  const affix = (
     <Animated.View
       style={[
         styles.container,
@@ -167,7 +179,21 @@ const TextInputAffix = ({
       </Text>
     </Animated.View>
   );
+
+  if (onPress) {
+    return (
+      <Pressable
+        onPress={onPress}
+        accessibilityRole="button"
+        accessibilityLabel={accessibilityLabel}
+      >
+        {affix}
+      </Pressable>
+    );
+  }
+  return affix;
 };
+
 TextInputAffix.displayName = 'TextInput.Affix';
 
 const styles = StyleSheet.create({

src/components/__tests__/TextInput.test.tsx

@@ -452,6 +452,25 @@ it('always applies line height, even if not specified', () => {
   });
 });
 
+it('call onPress when affix adornment pressed', () => {
+  const affixOnPress = jest.fn();
+  const affixTextValue = '+39';
+  const { getByText, toJSON } = render(
+    <TextInput
+      label="Flat input"
+      placeholder="Enter your phone number"
+      value={''}
+      left={<TextInput.Affix text="+39" onPress={affixOnPress} />}
+    />
+  );
+
+  fireEvent.press(getByText(affixTextValue));
+
+  expect(getByText(affixTextValue)).toBeTruthy();
+  expect(toJSON()).toMatchSnapshot();
+  expect(affixOnPress).toHaveBeenCalledTimes(1);
+});
+
 describe('maxFontSizeMultiplier', () => {
   const createInput = (
     type: Exclude<Props['mode'], undefined>,

src/components/__tests__/__snapshots__/TextInput.test.tsx.snap

@@ -1,5 +1,272 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`call onPress when affix adornment pressed 1`] = `
+<View
+  style={
+    [
+      {
+        "backgroundColor": "rgba(231, 224, 236, 1)",
+        "borderTopLeftRadius": 4,
+        "borderTopRightRadius": 4,
+      },
+      {},
+    ]
+  }
+>
+  <View
+    collapsable={false}
+    style={
+      {
+        "backgroundColor": "rgba(28, 27, 31, 1)",
+        "bottom": 0,
+        "height": 1,
+        "left": 0,
+        "position": "absolute",
+        "right": 0,
+        "transform": [
+          {
+            "scaleY": 0.5,
+          },
+        ],
+        "zIndex": 1,
+      }
+    }
+    testID="text-input-underline"
+  />
+  <View
+    style={
+      [
+        {
+          "paddingBottom": 0,
+          "paddingTop": 0,
+        },
+        {
+          "minHeight": 56,
+        },
+      ]
+    }
+  >
+    <View
+      collapsable={false}
+      pointerEvents="none"
+      style={
+        {
+          "bottom": 0,
+          "left": 0,
+          "opacity": 1,
+          "position": "absolute",
+          "right": 0,
+          "top": 0,
+          "transform": [
+            {
+              "translateX": 0,
+            },
+          ],
+          "width": 750,
+          "zIndex": 3,
+        }
+      }
+    >
+      <Text
+        collapsable={false}
+        maxFontSizeMultiplier={1.5}
+        numberOfLines={1}
+        onLayout={[Function]}
+        onTextLayout={[Function]}
+        style={
+          {
+            "color": "rgba(103, 80, 164, 1)",
+            "fontFamily": "System",
+            "fontSize": 16,
+            "fontWeight": undefined,
+            "left": 0,
+            "letterSpacing": 0.15,
+            "lineHeight": 19.2,
+            "opacity": 0,
+            "paddingLeft": 16,
+            "paddingRight": 16,
+            "position": "absolute",
+            "textAlign": "left",
+            "top": 30,
+            "transform": [
+              {
+                "translateX": 0,
+              },
+              {
+                "translateY": 0,
+              },
+              {
+                "scale": 1,
+              },
+            ],
+            "writingDirection": "ltr",
+          }
+        }
+        testID="text-input-flat-label-active"
+      >
+        Flat input
+      </Text>
+      <Text
+        collapsable={false}
+        maxFontSizeMultiplier={1.5}
+        numberOfLines={1}
+        style={
+          {
+            "color": "rgba(73, 69, 79, 1)",
+            "fontFamily": "System",
+            "fontSize": 16,
+            "fontWeight": undefined,
+            "left": 0,
+            "letterSpacing": 0.15,
+            "lineHeight": 19.2,
+            "opacity": 0,
+            "paddingLeft": 16,
+            "paddingRight": 16,
+            "position": "absolute",
+            "textAlign": "left",
+            "top": 30,
+            "transform": [
+              {
+                "translateX": 0,
+              },
+              {
+                "translateY": 0,
+              },
+              {
+                "scale": 1,
+              },
+            ],
+            "writingDirection": "ltr",
+          }
+        }
+        testID="text-input-flat-label-inactive"
+      >
+        Flat input
+      </Text>
+    </View>
+    <TextInput
+      cursorColor="rgba(103, 80, 164, 1)"
+      editable={true}
+      maxFontSizeMultiplier={1.5}
+      multiline={false}
+      onBlur={[Function]}
+      onChangeText={[Function]}
+      onFocus={[Function]}
+      placeholder=" "
+      placeholderTextColor="rgba(73, 69, 79, 1)"
+      selectionColor="rgba(103, 80, 164, 0.54)"
+      style={
+        [
+          {
+            "margin": 0,
+          },
+          {
+            "height": 56,
+          },
+          {
+            "paddingBottom": 4,
+            "paddingTop": 24,
+          },
+          {
+            "color": "rgba(73, 69, 79, 1)",
+            "fontFamily": "System",
+            "fontSize": 16,
+            "fontWeight": undefined,
+            "letterSpacing": 0.15,
+            "lineHeight": 19.2,
+            "minWidth": 65,
+            "paddingLeft": 16,
+            "paddingRight": 16,
+            "textAlign": "left",
+            "textAlignVertical": "center",
+          },
+          false,
+          {
+            "marginLeft": 0,
+            "paddingLeft": 40,
+          },
+          undefined,
+        ]
+      }
+      testID="text-input-flat"
+      underlineColorAndroid="transparent"
+      value=""
+    />
+  </View>
+  <View
+    accessibilityLabel="+39"
+    accessibilityRole="button"
+    accessibilityState={
+      {
+        "busy": undefined,
+        "checked": undefined,
+        "disabled": undefined,
+        "expanded": undefined,
+        "selected": undefined,
+      }
+    }
+    accessibilityValue={
+      {
+        "max": undefined,
+        "min": undefined,
+        "now": undefined,
+        "text": undefined,
+      }
+    }
+    accessible={true}
+    collapsable={false}
+    focusable={true}
+    onBlur={[Function]}
+    onClick={[Function]}
+    onFocus={[Function]}
+    onResponderGrant={[Function]}
+    onResponderMove={[Function]}
+    onResponderRelease={[Function]}
+    onResponderTerminate={[Function]}
+    onResponderTerminationRequest={[Function]}
+    onStartShouldSetResponder={[Function]}
+  >
+    <View
+      collapsable={false}
+      onLayout={[Function]}
+      style={
+        {
+          "alignItems": "center",
+          "justifyContent": "center",
+          "left": 16,
+          "opacity": 0,
+          "position": "absolute",
+          "top": null,
+        }
+      }
+      testID="left-affix-adornment"
+    >
+      <Text
+        maxFontSizeMultiplier={1.5}
+        style={
+          [
+            {
+              "color": "rgba(73, 69, 79, 1)",
+            },
+            {
+              "fontFamily": "System",
+              "fontSize": 16,
+              "fontWeight": undefined,
+              "letterSpacing": 0.15,
+              "lineHeight": 19.2,
+            },
+            undefined,
+          ]
+        }
+        testID="left-affix-adornment-text"
+      >
+        +39
+      </Text>
+    </View>
+  </View>
+</View>
+`;
+
 exports[`correctly applies a component as the text label 1`] = `
 <View
   style={