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 王天杨
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import clsx from 'clsx';
import extractEventHandlers from "../extractEventHandlers/index.js";
import omitEventHandlers from "../omitEventHandlers/index.js";
/**
* Merges the slot component internal props (usually coming from a hook)
* with the externally provided ones.
*
* The merge order is (the latter overrides the former):
* 1. The internal props (specified as a getter function to work with get*Props hook result)
* 2. Additional props (specified internally on a Base UI component)
* 3. External props specified on the owner component. These should only be used on a root slot.
* 4. External props specified in the `slotProps.*` prop.
* 5. The `className` prop - combined from all the above.
* @param parameters
* @returns
*/
function mergeSlotProps(parameters) {
const {
getSlotProps,
additionalProps,
externalSlotProps,
externalForwardedProps,
className
} = parameters;
if (!getSlotProps) {
// The simpler case - getSlotProps is not defined, so no internal event handlers are defined,
// so we can simply merge all the props without having to worry about extracting event handlers.
const joinedClasses = clsx(additionalProps?.className, className, externalForwardedProps?.className, externalSlotProps?.className);
const mergedStyle = {
...additionalProps?.style,
...externalForwardedProps?.style,
...externalSlotProps?.style
};
const props = {
...additionalProps,
...externalForwardedProps,
...externalSlotProps
};
if (joinedClasses.length > 0) {
props.className = joinedClasses;
}
if (Object.keys(mergedStyle).length > 0) {
props.style = mergedStyle;
}
return {
props,
internalRef: undefined
};
}
// In this case, getSlotProps is responsible for calling the external event handlers.
// We don't need to include them in the merged props because of this.
const eventHandlers = extractEventHandlers({
...externalForwardedProps,
...externalSlotProps
});
const componentsPropsWithoutEventHandlers = omitEventHandlers(externalSlotProps);
const otherPropsWithoutEventHandlers = omitEventHandlers(externalForwardedProps);
const internalSlotProps = getSlotProps(eventHandlers);
// The order of classes is important here.
// Emotion (that we use in libraries consuming Base UI) depends on this order
// to properly override style. It requires the most important classes to be last
// (see https://github.com/mui/material-ui/pull/33205) for the related discussion.
const joinedClasses = clsx(internalSlotProps?.className, additionalProps?.className, className, externalForwardedProps?.className, externalSlotProps?.className);
const mergedStyle = {
...internalSlotProps?.style,
...additionalProps?.style,
...externalForwardedProps?.style,
...externalSlotProps?.style
};
const props = {
...internalSlotProps,
...additionalProps,
...otherPropsWithoutEventHandlers,
...componentsPropsWithoutEventHandlers
};
if (joinedClasses.length > 0) {
props.className = joinedClasses;
}
if (Object.keys(mergedStyle).length > 0) {
props.style = mergedStyle;
}
return {
props,
internalRef: internalSlotProps.ref
};
}
export default mergeSlotProps;
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