90 lines
3.0 KiB
JavaScript
90 lines
3.0 KiB
JavaScript
/**
|
|
* Copyright (c) 2013-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
* The examples provided by Facebook are for non-commercial testing and
|
|
* evaluation purposes only.
|
|
*
|
|
* Facebook reserves all rights not expressly granted.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
|
|
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
|
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* @flow
|
|
* @providesModule UIExplorerStatePersister
|
|
*/
|
|
'use strict';
|
|
|
|
const AsyncStorage = require('AsyncStorage');
|
|
const React = require('React');
|
|
|
|
export type PassProps<State> = {
|
|
state: State,
|
|
setState: (stateLamda: (state: State) => State) => void,
|
|
};
|
|
|
|
/**
|
|
* A simple container for persisting some state and passing it into the wrapped component as
|
|
* `props.persister.state`. Update it with `props.persister.setState`. The component is initially
|
|
* rendered using `getInitialState` in the spec and is then re-rendered with the persisted data
|
|
* once it's fetched.
|
|
*
|
|
* This is currently tied to UIExplorer because it's generally not good to use AsyncStorage like
|
|
* this in real apps with user data, but we could maybe pull it out for other internal settings-type
|
|
* usage.
|
|
*/
|
|
function createContainer<Props: Object, State>(
|
|
Component: ReactClass<Props & {persister: PassProps<State>}>,
|
|
spec: {
|
|
cacheKeySuffix: (props: Props) => string,
|
|
getInitialState: (props: Props) => State,
|
|
version?: string,
|
|
},
|
|
): ReactClass<Props> {
|
|
return class ComponentWithPersistedState extends React.Component {
|
|
props: Props;
|
|
static displayName = `UIExplorerStatePersister(${Component.displayName || Component.name})`;
|
|
state = {value: spec.getInitialState(this.props)};
|
|
_cacheKey = `UIExplorer:${spec.version || 'v1'}:${spec.cacheKeySuffix(this.props)}`;
|
|
componentDidMount() {
|
|
AsyncStorage.getItem(this._cacheKey, (err, value) => {
|
|
if (!err && value) {
|
|
this.setState({value: JSON.parse(value)});
|
|
}
|
|
});
|
|
}
|
|
_passSetState = (stateLamda: (state: State) => State): void => {
|
|
this.setState((state) => {
|
|
const value = stateLamda(state.value);
|
|
AsyncStorage.setItem(this._cacheKey, JSON.stringify(value));
|
|
return {value};
|
|
});
|
|
};
|
|
render(): React.Element<*> {
|
|
return (
|
|
<Component
|
|
{...this.props}
|
|
persister={{
|
|
state: this.state.value,
|
|
setState: this._passSetState,
|
|
}}
|
|
/>
|
|
);
|
|
}
|
|
};
|
|
}
|
|
|
|
const UIExplorerStatePersister = {
|
|
createContainer,
|
|
};
|
|
|
|
module.exports = UIExplorerStatePersister;
|