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import React from 'react';
import Tab from 'react-bootstrap/lib/Tab.js';
export default
class ValidationTab extends React.Component {
static propTypes = {
children: React.PropTypes.node,
eventKey: React.PropTypes.any.isRequired,
onValidationStateChange: React.PropTypes.func //This property is assigned dynamically via React.cloneElement. lookup ValidationTabs.jsx. therefore it cannot be stated as required!
};
constructor(props) {
super(props);
this.validationComponents = [];
}
static childContextTypes = {
validationParent: React.PropTypes.any
};
static contextTypes = {
validationParent: React.PropTypes.any
};
getChildContext() {
return {validationParent: this};
}
state = {
isValid: true,
notifyParent: false
};
componentDidMount() {
let validationParent = this.context.validationParent;
if (validationParent) {
validationParent.register(this);
}
}
componentWillUnmount() {
let validationParent = this.context.validationParent;
if (validationParent) {
validationParent.unregister(this);
}
}
register(validationComponent) {
this.validationComponents.push(validationComponent);
}
unregister(validationComponent) {
this.childValidStateChanged(validationComponent, true);
this.validationComponents = this.validationComponents.filter(otherValidationComponent => validationComponent !== otherValidationComponent);
}
notifyValidStateChangedToParent(isValid) {
let validationParent = this.context.validationParent;
if (validationParent) {
validationParent.childValidStateChanged(this, isValid);
}
}
childValidStateChanged(validationComponent, isValid) {
const currentValidState = this.state.isValid;
if (isValid !== currentValidState) {
let filteredValidationComponents = this.validationComponents.filter(otherValidationComponent => validationComponent !== otherValidationComponent);
let newValidState = isValid && filteredValidationComponents.every(otherValidationComponent => {
return otherValidationComponent.isValid();
});
this.setState({isValid: newValidState, notifyParent: true});
}
}
validate() {
let isValid = true;
this.validationComponents.forEach(validationComponent => {
const isValidationComponentValid = validationComponent.validate().isValid;
isValid = isValidationComponentValid && isValid;
});
this.setState({isValid, notifyParent: false});
return {isValid};
}
componentDidUpdate(prevProps, prevState) {
if(prevState.isValid !== this.state.isValid) {
if(this.state.notifyParent) {
this.notifyValidStateChangedToParent(this.state.isValid);
}
this.props.onValidationStateChange(this.props.eventKey, this.state.isValid);
}
}
isValid() {
return this.state.isValid;
}
render() {
let {children, ...tabProps} = this.props;
return (
<Tab {...tabProps}>{children}</Tab>
);
}
}
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