jiti-meet/react/features/base/label/components/native/ExpandedLabel.js

107 lines
2.5 KiB
JavaScript

// @flow
import React, { Component } from 'react';
import { Animated, Text, View } from 'react-native';
import styles, { DEFAULT_COLOR } from './styles';
export type Props = {
/**
* The position of the parent element (from right to left) to display the
* arrow.
*/
parentPosition: number,
/**
* Custom styles.
*/
style: ?Object
};
type State = {
/**
* The opacity animation Object.
*/
opacityAnimation: Object
};
/**
* A react {@code Component} that implements an expanded label as tooltip-like
* component to explain the meaning of the {@code Label}.
*/
export default class ExpandedLabel<P: Props> extends Component<P, State> {
/**
* Instantiates a new {@code ExpandedLabel} instance.
*
* @inheritdoc
*/
constructor(props: P) {
super(props);
this.state = {
opacityAnimation: new Animated.Value(0)
};
}
/**
* Implements React {@code Component}'s componentDidMount.
*
* @inheritdoc
*/
componentDidMount() {
Animated.decay(this.state.opacityAnimation, {
toValue: 1,
velocity: 1,
useNativeDriver: true
}).start();
}
/**
* Implements React {@code Component}'s render.
*
* @inheritdoc
*/
render() {
return (
<Animated.View
style = { [ styles.expandedLabelContainer,
this.props.style,
{ opacity: this.state.opacityAnimation }
] }>
<View
style = { [ styles.expandedLabelTextContainer,
{ backgroundColor: this._getColor() || DEFAULT_COLOR } ] }>
<Text style = { styles.expandedLabelText }>
{ this._getLabel() }
</Text>
</View>
</Animated.View>
);
}
/**
* Returns the label that needs to be rendered in the box. To be implemented
* by its overriding classes.
*
* @returns {string}
*/
_getLabel: () => string;
_getColor: () => string;
/**
* Defines the color of the expanded label. This function returns a default
* value if implementing classes don't override it, but the goal is to have
* expanded labels matching to circular labels in color.
* If implementing classes return a falsy value, it also uses the default
* color.
*
* @returns {string}
*/
_getColor() {
return DEFAULT_COLOR;
}
}