ModalOptions

Interface of the modal configuration options. These settings will let Modalfy how to render and animate a modal.

Note: Each key in this object has a default value and may be overridden either in the modalConfig & defaultModalOptions objects in createModalStack() or directly in the modal component file through modalOptions.

import { Animated, ViewStyle } from 'react-native'

export interface ModalOptions {

  animateInConfig?: Pick<Animated.TimingAnimationConfig, 'duration' | 'easing'>
  
  animationIn?: (
    animatedValue: Animated.Value,
    toValue: number,
    callback?: () => void,
  ) => Animated.CompositeAnimation | void
  
  animateOutConfig?: Pick<Animated.TimingAnimationConfig, 'duration' | 'easing'>
  
  animationOut?: (
    animatedValue: Animated.Value,
    toValue: number,
    callback: () => void,
  ) => Animated.CompositeAnimation | void
  
  backBehavior?: 'clear' | 'pop' | 'none'
  
  backdropColor?: ViewStyle['backgroundColor']
  
  backdropOpacity?: number
  
  backdropAnimationDuration?: number
  
  containerStyle?: ViewStyle
  
  disableFlingGesture?: boolean
  
  modal?: React.ComponentType<any>
  
  position?: 'center' | 'top' | 'bottom'
  
  transitionOptions?: ModalTransitionOptions
}

// ------------------ INTERNAL TYPES ------------------ //

export type ModalTransitionOptions = (
  animatedValue: Animated.Value,
) => {
  [key: string]:
    | {
        [key: string]: ModalTransitionValue
      }[]
    | ModalTransitionValue
}

export type ModalTransitionValue =
  | Animated.AnimatedInterpolation
  | string
  | number
  | undefined

API reference

animateInConfig

animateInConfig?: Pick<Animated.TimingAnimationConfig, 'duration' | 'easing'>

Animation configuration used to animate a modal in, at the top of the stack. It uses Animated.timing() so if you want to use another animation type, see animationIn.

Note: only easing and duration are needed.

Default: { easing: Easing.inOut(Easing.exp), duration: 450 }

animationIn

animationIn?: (
  animatedValue: Animated.Value,
  toValue: number,
  callback?: () => void,
) => Animated.CompositeAnimation | void

Function that receives the animatedValue used by the library to animate the modal opening, and a toValue argument representing the modal position in the stack. Useful to implement your own animation type and/or composition functions.

Since Modalfy v3, the function receives a callback argument, which can be called when the animation is finished, depending on whether or not you'll have a callback in a openModal().

Note: If you just want to use Animated.timing(), check animateInConfig.

Default: -

Example:

animationIn: (modalAnimatedValue, modalToValue, callback) => {
  Animated.parallel([
    Animated.timing(modalAnimatedValue, {
      toValue: modalToValue,
      duration: 300,
      easing: Easing.inOut(Easing.exp),
      useNativeDriver: true,
    }),
    Animated.timing(myOtherAnimatedValue, {
      toValue: 1,
      duration: 300,
      easing: Easing.inOut(Easing.exp),
      useNativeDriver: true,
    }),
  ]).start(() => callback?.())
}

animateOutConfig

animateOutConfig?: Pick<Animated.TimingAnimationConfig, 'duration' | 'easing'>

Animation configuration used to animate a modal out (underneath other modals or when closing the last one).

Note: only easing and duration are needed.

Default: { easing: Easing.inOut(Easing.exp), duration: 450 }

animationOut

animationOut?: (
  animatedValue: Animated.Value,
  toValue: number,
  callback: () => void,
) => Animated.CompositeAnimation | void

Function that receives the animatedValue used by the library to animate the modal closing, and a toValue argument representing the modal position in the stack. Useful to implement your own animation type and/or composition functions.

Since Modalfy v3, the function receives acallback argument, which must be called when the animation is finished.

Note: If you just want to use Animated.timing(), check animateOutConfig.

Default: -

Example:

animationOut: (modalAnimatedValue, modalToValue, callback) => {
  Animated.parallel([
    Animated.timing(modalAnimatedValue, {
      toValue: modalToValue,
      duration: 300,
      easing: Easing.inOut(Easing.exp),
      useNativeDriver: true,
    }),
    Animated.timing(myOtherAnimatedValue, {
      toValue: 1,
      duration: 300,
      easing: Easing.inOut(Easing.exp),
      useNativeDriver: true,
    }),
  ]).start(() => callback?.())
}

backBehavior

backBehavior?: 'clear' | 'pop' | 'none'

How you want the modal stack to behave when users press the backdrop, but also when the physical back button is pressed on Android.

Note:

  • 'clear' means that you want the whole stack to be cleared, whatever the amount of modals opened.

  • 'pop' means that you only want the modal at the top of the stack to be removed.

  • 'none' means that you don't want anything to happen, ie: users have to perform an action inside that modal before you programmatically remove it via closeModal.

Default: 'pop'

backdropColor

backdropColor?: ViewStyle['backgroundColor']

Color of the modal stack backdrop.

Default: 'black'

backdropOpacity

backdropOpacity?: number

Number between 0 and 1 that defines the backdrop opacity.

Default: 0.6

backdropAnimationDuration

backdropAnimationDuration?: number

Number that defines how long the backdrop should take to animate in and out.

Default: 300

containerStyle

containerStyle?: ViewStyle

Styles applied to the <View> directly wrapping your modal component.

Default: {}

disableFlingGesture

disableFlingGesture?: boolean

Disable fling gesture detection to close the modal.

Note: the fling gesture handler is not enabled when position is center.

Default: false

‌modal

modal?: React.ComponentType<any>

React component that will be rendered when you'll open the modal.

Note: only needed when you're using this inside createModalStack() 1st argument.

Default: -

pointerEventsBehavior

pointerEventsBehavior?: 'auto' | 'none' | 'current-modal-only' | 'current-modal-none'

How you want any modal to respond to a touch/click.

Note:

  • 'auto' means that you want the default behavior. The modal will catch touch events and propagate them automatically.

  • 'none' means that you don't want the modal to catch any touch event. Touching/clicking on it will not trigger anything.

  • 'current-modal-only' means that you only want the modal at the top of the stack to be touchable/clickable. Interacting with any modal below will not be possible and will be considered as interacting with the backdrop instead.

  • 'current-modal-none' means that you don't want the current modal to be touchable/clickable. Nothing will happen when you'll interact with it but the modals below and the backdrop will still be reachable.

Default: 'auto'

position

position?: 'center' | 'top' | 'bottom'

Vertical positioning of the modal.

Default: 'center'

transitionOptions

transitionOptions?: ModalTransitionOptions

transitionOptions(animatedValue) returns a React Native style object containing values that can use the provided animatedValue to run animation interpolations on a modal.

Notes:

  • Whenever you interpolate animatedValue, the inputRange corresponds to the modal position in your stack! 0 will translate to "the modal is not rendered", 1 to "this modal is on top of the stack/the only item in the stack", 2 to "this modal is the 2nd item in the stack", etc.

  • The last entry of inputRange will define how all the modals positioned at that index or more should animate. In the following example, any modal positioned 4th or more in the stack will have an opacity of 0:

opacity: animatedValue.interpolate({
  inputRange: [0, 1, 2, 3, 4],
  outputRange: [0, 1, 0.9, 0.6, 0],
})

  • The object returned by transitionOptions() must contain keys that work with useNativeDriver: true. If some don't, consider using containerStyle.

Default: -

PreviousModalStackConfigNextModalProp

Last updated