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import * as React from 'react';
import { Animated, Component, Styles, Types, UserInterface, View } from 'reactxp';
import { ITransitionGroupProps } from '../transitions';
interface IProps extends ITransitionGroupProps {
children: React.ReactNode;
}
interface IState {
previousChildren?: React.ReactNode;
childrenAnimation?: Types.AnimatedViewStyleRuleSet;
previousChildrenAnimation?: Types.AnimatedViewStyleRuleSet;
dimensions: Types.Dimensions;
isAnimating: boolean;
}
const dimensions = UserInterface.measureWindow();
const styles = {
animationDefaultStyle: Styles.createViewStyle({
position: 'absolute',
width: dimensions.width,
height: dimensions.height,
}),
allowPointerEventsStyle: Styles.createViewStyle({
// @ts-ignore
pointerEvents: 'auto',
}),
transitionContainerStyle: Styles.createViewStyle({
width: dimensions.width,
height: dimensions.height,
}),
};
export default class TransitionContainer extends Component<IProps, IState> {
public state: IState = {
dimensions: UserInterface.measureWindow(),
isAnimating: false,
};
public UNSAFE_componentWillReceiveProps(nextProps: IProps) {
switch (nextProps.name) {
case 'slide-up':
this.slideUpTransition(nextProps);
break;
case 'slide-down':
this.slideDownTransition(nextProps);
break;
case 'push':
this.pushTransition(nextProps);
break;
case 'pop':
this.popTransition(nextProps);
break;
default:
break;
}
}
public onFinishedAnimation = (_result: Types.Animated.EndResult) => {
this.setState({
childrenAnimation: styles.allowPointerEventsStyle,
previousChildren: null,
isAnimating: false,
});
};
public slideUpTransition(nextProps: IProps) {
const currentTranslationValue = Animated.createValue(this.state.dimensions.height);
this.setState(
{
previousChildren: this.props.children,
childrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 1,
transform: [{ translateY: currentTranslationValue }],
}),
previousChildrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 0,
transform: [{ translateY: Animated.createValue(0) }],
}),
isAnimating: true,
},
() => {
Animated.timing(currentTranslationValue, {
toValue: 0,
easing: Animated.Easing.InOut(),
duration: nextProps.duration,
}).start(this.onFinishedAnimation);
},
);
}
public slideDownTransition(nextProps: IProps) {
const previousTranslationValue = Animated.createValue(0);
this.setState(
{
previousChildren: this.props.children,
childrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 0,
transform: [{ translateY: Animated.createValue(0) }],
}),
previousChildrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 1,
transform: [{ translateY: previousTranslationValue }],
}),
isAnimating: true,
},
() => {
Animated.timing(previousTranslationValue, {
toValue: this.state.dimensions.height,
easing: Animated.Easing.InOut(),
duration: nextProps.duration,
}).start(this.onFinishedAnimation);
},
);
}
public pushTransition(nextProps: IProps) {
const currentTranslationValue = Animated.createValue(this.state.dimensions.width);
const previousTranslationValue = Animated.createValue(0);
this.setState(
{
previousChildren: this.props.children,
childrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 1,
transform: [{ translateX: currentTranslationValue }],
}),
previousChildrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 0,
transform: [{ translateX: previousTranslationValue }],
}),
isAnimating: true,
},
() => {
const compositeAnimation = Animated.parallel([
Animated.timing(currentTranslationValue, {
toValue: 0,
easing: Animated.Easing.InOut(),
duration: nextProps.duration,
}),
Animated.timing(previousTranslationValue, {
toValue: -this.state.dimensions.width / 2,
easing: Animated.Easing.InOut(),
duration: nextProps.duration,
}),
]);
compositeAnimation.start(this.onFinishedAnimation);
},
);
}
public popTransition(nextProps: IProps) {
const currentTranslationValue = Animated.createValue(-this.state.dimensions.width / 2);
const previousTranslationValue = Animated.createValue(0);
this.setState(
{
previousChildren: this.props.children,
childrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 0,
transform: [{ translateX: currentTranslationValue }],
}),
previousChildrenAnimation: Styles.createAnimatedViewStyle({
// @ts-ignore
zIndex: 1,
transform: [{ translateX: previousTranslationValue }],
}),
isAnimating: true,
},
() => {
const compositeAnimation = Animated.parallel([
Animated.timing(currentTranslationValue, {
toValue: 0,
easing: Animated.Easing.InOut(),
duration: nextProps.duration,
}),
Animated.timing(previousTranslationValue, {
toValue: this.state.dimensions.width,
easing: Animated.Easing.InOut(),
duration: nextProps.duration,
}),
]);
compositeAnimation.start(this.onFinishedAnimation);
},
);
}
public render() {
const { children } = this.props;
const {
isAnimating,
previousChildren,
childrenAnimation,
previousChildrenAnimation,
} = this.state;
return (
<View style={styles.transitionContainerStyle} ignorePointerEvents={isAnimating}>
{previousChildren && (
<Animated.View
key={getChildKey(previousChildren)}
style={[styles.animationDefaultStyle, previousChildrenAnimation]}>
{previousChildren}
</Animated.View>
)}
<Animated.View
key={getChildKey(children)}
style={[styles.animationDefaultStyle, childrenAnimation]}>
{children}
</Animated.View>
</View>
);
}
}
function getChildKey(child?: React.ReactNode): string | number | undefined {
return child &&
typeof child === 'object' &&
'key' in child &&
(typeof child.key === 'string' || typeof child.key === 'number')
? child.key
: undefined;
}
|
