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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | 27x 27x 27x 27x 27x 27x 27x 15x 15x 15x 15x 15x 27x 14x 27x 9x 4x 5x 5x 1x 5x 5x 1x 5x 3x 3x 3x 3x 3x 3x 2x 2x 27x 14x 27x 49x 49x 15x 20x 18x 15x 19x 17x 18x 15x 24x 15x 1x 15x 17x 17x 17x 27x 27x | import * as React from 'react';
import * as PropTypes from 'prop-types';
import ApolloClient, { ApolloError } from 'apollo-client';
import { Observable } from 'apollo-link';
import { DocumentNode } from 'graphql';
import { ZenObservable } from 'zen-observable-ts';
import { OperationVariables } from './types';
const shallowEqual = require('fbjs/lib/shallowEqual');
const invariant = require('invariant');
export interface SubscriptionResult<TData = any> {
loading: boolean;
data?: TData;
error?: ApolloError;
}
export interface SubscriptionProps<TData = any, TVariables = OperationVariables> {
subscription: DocumentNode;
variables?: TVariables;
shouldResubscribe?: any;
children: (result: SubscriptionResult<TData>) => React.ReactNode;
}
export interface SubscriptionState<TData = any> {
loading: boolean;
data?: TData;
error?: ApolloError;
}
export interface SubscriptionContext {
client: ApolloClient<Object>;
}
class Subscription<TData = any, TVariables = any> extends React.Component<
SubscriptionProps<TData, TVariables>,
SubscriptionState<TData>
> {
static contextTypes = {
client: PropTypes.object.isRequired,
};
static propTypes = {
subscription: PropTypes.object.isRequired,
variables: PropTypes.object,
children: PropTypes.func.isRequired,
shouldResubscribe: PropTypes.oneOfType([PropTypes.func, PropTypes.bool]),
};
private client: ApolloClient<any>;
private queryObservable?: Observable<any>;
private querySubscription?: ZenObservable.Subscription;
constructor(props: SubscriptionProps<TData, TVariables>, context: SubscriptionContext) {
super(props, context);
invariant(
!!context.client,
`Could not find "client" in the context of Subscription. Wrap the root component in an <ApolloProvider>`,
);
this.client = context.client;
this.initialize(props);
this.state = this.getInitialState();
}
componentDidMount() {
this.startSubscription();
}
componentWillReceiveProps(
nextProps: SubscriptionProps<TData, TVariables>,
nextContext: SubscriptionContext,
) {
if (
shallowEqual(this.props.variables, nextProps.variables) &&
this.client === nextContext.client &&
this.props.subscription === nextProps.subscription
) {
return;
}
let shouldResubscribe = nextProps.shouldResubscribe;
if (typeof shouldResubscribe === 'function') {
shouldResubscribe = !!shouldResubscribe(this.props, nextProps);
}
const shouldNotResubscribe = shouldResubscribe === false;
if (this.client !== nextContext.client) {
this.client = nextContext.client;
}
if (!shouldNotResubscribe) {
this.endSubscription();
delete this.queryObservable;
this.initialize(nextProps);
this.startSubscription();
this.setState(this.getInitialState());
return;
}
this.initialize(nextProps);
this.startSubscription();
}
componentWillUnmount() {
this.endSubscription();
}
render() {
const result = Object.assign({}, this.state, {
variables: this.props.variables,
});
return this.props.children(result);
}
private initialize = (props: SubscriptionProps<TData, TVariables>) => {
if (this.queryObservable) return;
this.queryObservable = this.client.subscribe({
query: props.subscription,
variables: props.variables,
});
};
private startSubscription = () => {
if (this.querySubscription) return;
this.querySubscription = this.queryObservable!.subscribe({
next: this.updateCurrentData,
error: this.updateError,
});
};
private getInitialState = () => ({
loading: true,
error: undefined,
data: undefined,
});
private updateCurrentData = (result: SubscriptionResult<TData>) => {
this.setState({
data: result.data,
loading: false,
error: undefined,
});
};
private updateError = (error: any) => {
this.setState({
error,
loading: false,
});
};
private endSubscription = () => {
Eif (this.querySubscription) {
this.querySubscription.unsubscribe();
delete this.querySubscription;
}
};
}
export default Subscription;
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