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2x | var React = require('react');
var PropTypes = require('prop-types');
var createClass = require('create-react-class');
var withRouter = require('react-router').withRouter;
var hoistStatics = require('hoist-non-react-statics');
var lib = require('./lib');
function isNode() {
return (typeof process === 'object' && process + '' === '[object process]');
}
function getDisplayName(Cmp) {
return Cmp.displayName || Cmp.name || 'Component';
}
function withWrapper(Cmp) {
var Wrapper = createClass({
displayName: 'WithWrapper',
contextTypes: {
store: PropTypes.any,
getInitialProps: PropTypes.func
},
getInitialState: function getInitialState() {
var initialProps = this.context.getInitialProps();
// console.log('Initial props from context', initialProps);
return lib.extends({}, initialProps || {}, {
initialLoading: !initialProps, // no props means it will load
initialError: initialProps && initialProps.initialError && new Error(initialProps.initialError) // it comes as string
});
},
componentWillMount: function componentWillMount() {
var self = this;
// On NodeJS setState is a no-op, besides, getInitialProps will be called by server rendering procedure
// On client side this function should not be called if props were passed from server
Eif (isNode() || !this.state.initialLoading) return;
return new Promise(function(res) {
res(Cmp.getInitialProps ? Cmp.getInitialProps({
location: self.props.location,
params: self.props.params,
req: null,
res: null,
store: self.context.store //FIXME Brutal access to Redux Provider's store
}) : null);
}).then(function(props) {
self.setState(lib.extends({}, props, {
initialLoading: false,
initialError: null
}));
}).catch(function onError(e) {
console.error(Wrapper.displayName + '.getInitialProps has failed:', e);
self.setState({
initialLoading: false,
initialError: e
});
});
},
getInitialProps: function getInitialProps() {
var self = this;
return new Promise(function(resolve) {
if (self.state.initialLoading) {
console.warn(Wrapper.displayName + '.getInitialProps is already pending, make sure you won\'t have race condition');
}
self.state = {};
self.setState({
initialLoading: true,
initialError: null
}, function() {
resolve(self.componentWillMount());
});
});
},
render: function render() {
var props = lib.objectWithoutProperties(this.props, ["children"]);
return React.createElement(
Cmp,
//TODO Add mapping function
lib.extends({getInitialProps: this.getInitialProps}, this.state, props),
this.props.children
);
}
});
Wrapper = withRouter(Wrapper);
Wrapper.displayName = 'withWrapper(' + getDisplayName(Cmp) + ')';
Wrapper.OriginalComponent = Cmp;
return hoistStatics(Wrapper, Cmp);
}
var WrapperProvider = createClass({
displayName: 'WrapperProvider',
propTypes: {
initialProps: PropTypes.any
},
defaultProps: {
initialProps: null
},
childContextTypes: {
getInitialProps: PropTypes.func
},
getChildContext: function getChildContext() {
var self = this;
return {
getInitialProps: function() {
var initialProps = self.initialProps;
self.initialProps = null; // initial props can be used only once
return initialProps;
}
};
},
getInitialState: function getInitialState() {
this.initialProps = this.props.initialProps;
return {};
},
render: function render() {
return this.props.children;
}
});
exports.withWrapper = withWrapper;
exports.WrapperProvider = WrapperProvider; |