PickerItem in multi mode - send selected to onPress (wix#2537)

Author: M-i-k-e-l

src/components/picker/PickerItem.tsx

@@ -63,7 +63,7 @@ const PickerItem = (props: PickerItemProps) => {
   }, [isItemDisabled, labelStyle]);
 
   const _onPress = useCallback(() => {
-    onPress?.();
+    onPress?.(context.isMultiMode ? !isSelected : undefined);
     if (migrate) {
       context.onPress(value);
     } else {

src/components/picker/types.tsx

@@ -237,8 +237,9 @@ export interface PickerItemProps {
   disabled?: boolean;
   /**
    * Callback for onPress action
+   * @param selected true\false in multi mode and undefined in single mode
    */
-  onPress?: () => void;
+  onPress?: (selected?: boolean) => void;
   /**
    * Component test id
    */