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88 lines
3.9 KiB
88 lines
3.9 KiB
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose"; |
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var _excluded = ["initMapStateToProps", "initMapDispatchToProps", "initMergeProps"]; |
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import verifySubselectors from './verifySubselectors'; |
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export function impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) { |
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return function impureFinalPropsSelector(state, ownProps) { |
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return mergeProps(mapStateToProps(state, ownProps), mapDispatchToProps(dispatch, ownProps), ownProps); |
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}; |
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} |
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export function pureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, _ref) { |
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var areStatesEqual = _ref.areStatesEqual, |
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areOwnPropsEqual = _ref.areOwnPropsEqual, |
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areStatePropsEqual = _ref.areStatePropsEqual; |
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var hasRunAtLeastOnce = false; |
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var state; |
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var ownProps; |
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var stateProps; |
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var dispatchProps; |
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var mergedProps; |
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function handleFirstCall(firstState, firstOwnProps) { |
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state = firstState; |
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ownProps = firstOwnProps; |
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stateProps = mapStateToProps(state, ownProps); |
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dispatchProps = mapDispatchToProps(dispatch, ownProps); |
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mergedProps = mergeProps(stateProps, dispatchProps, ownProps); |
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hasRunAtLeastOnce = true; |
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return mergedProps; |
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} |
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function handleNewPropsAndNewState() { |
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stateProps = mapStateToProps(state, ownProps); |
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if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps); |
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mergedProps = mergeProps(stateProps, dispatchProps, ownProps); |
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return mergedProps; |
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} |
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function handleNewProps() { |
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if (mapStateToProps.dependsOnOwnProps) stateProps = mapStateToProps(state, ownProps); |
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if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps); |
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mergedProps = mergeProps(stateProps, dispatchProps, ownProps); |
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return mergedProps; |
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} |
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function handleNewState() { |
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var nextStateProps = mapStateToProps(state, ownProps); |
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var statePropsChanged = !areStatePropsEqual(nextStateProps, stateProps); |
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stateProps = nextStateProps; |
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if (statePropsChanged) mergedProps = mergeProps(stateProps, dispatchProps, ownProps); |
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return mergedProps; |
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} |
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function handleSubsequentCalls(nextState, nextOwnProps) { |
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var propsChanged = !areOwnPropsEqual(nextOwnProps, ownProps); |
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var stateChanged = !areStatesEqual(nextState, state); |
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state = nextState; |
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ownProps = nextOwnProps; |
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if (propsChanged && stateChanged) return handleNewPropsAndNewState(); |
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if (propsChanged) return handleNewProps(); |
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if (stateChanged) return handleNewState(); |
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return mergedProps; |
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} |
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return function pureFinalPropsSelector(nextState, nextOwnProps) { |
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return hasRunAtLeastOnce ? handleSubsequentCalls(nextState, nextOwnProps) : handleFirstCall(nextState, nextOwnProps); |
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}; |
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} // TODO: Add more comments |
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// If pure is true, the selector returned by selectorFactory will memoize its results, |
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// allowing connectAdvanced's shouldComponentUpdate to return false if final |
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// props have not changed. If false, the selector will always return a new |
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// object and shouldComponentUpdate will always return true. |
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export default function finalPropsSelectorFactory(dispatch, _ref2) { |
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var initMapStateToProps = _ref2.initMapStateToProps, |
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initMapDispatchToProps = _ref2.initMapDispatchToProps, |
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initMergeProps = _ref2.initMergeProps, |
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options = _objectWithoutPropertiesLoose(_ref2, _excluded); |
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var mapStateToProps = initMapStateToProps(dispatch, options); |
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var mapDispatchToProps = initMapDispatchToProps(dispatch, options); |
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var mergeProps = initMergeProps(dispatch, options); |
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if (process.env.NODE_ENV !== 'production') { |
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verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, options.displayName); |
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} |
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var selectorFactory = options.pure ? pureFinalPropsSelectorFactory : impureFinalPropsSelectorFactory; |
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return selectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, options); |
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} |