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observer.js
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observer.js
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import {autorun} from 'mobx'
let Component
/**
* Observer decorator
*/
export function observer (componentClass) {
if (componentClass.prototype.hasOwnProperty('componentDidMount')) {
const originalDidMount = componentClass.prototype.componentDidMount
componentClass.prototype.componentDidMount = function () {
this.disposer = autorun(() => {
this.render()
this.forceUpdate()
})
originalDidMount.call(this)
}
} else {
componentClass.prototype.componentDidMount = function () {
this.disposer = autorun(() => {
this.render()
this.forceUpdate()
})
}
}
if (componentClass.prototype.hasOwnProperty('componentWillUnmount')) {
const originalUnmount = componentClass.prototype.componentWillUnmount
componentClass.prototype.componentWillUnmount = function () {
this.disposer()
originalUnmount.call(this)
}
} else {
componentClass.prototype.componentWillUnmount = function () {
this.disposer()
}
}
return componentClass
}
export function setComponent (comp) {
Component = comp
}
export function makeObserver (fn) {
class Cl extends Component {
componentDidMount () {
this.disposer = autorun(() => {
this.render()
this.forceUpdate()
})
}
render () {
return fn(this.props)
}
componentWillUnmount () {
this.disposer()
}
}
return Cl
}