framer-motion
Version:
A simple and powerful React animation library
76 lines (74 loc) • 3.01 kB
JavaScript
/**
* Decides if the supplied variable is an array of variant labels
*/
function isVariantLabels(v) {
return Array.isArray(v);
}
/**
* Decides if the supplied variable is variant label
*/
function isVariantLabel(v) {
return typeof v === "string" || isVariantLabels(v);
}
/**
* Creates an object containing the latest state of every MotionValue on a VisualElement
*/
function getCurrent(visualElement) {
var current = {};
visualElement.forEachValue(function (value, key) { return (current[key] = value.get()); });
return current;
}
/**
* Creates an object containing the latest velocity of every MotionValue on a VisualElement
*/
function getVelocity(visualElement) {
var velocity = {};
visualElement.forEachValue(function (value, key) { return (velocity[key] = value.getVelocity()); });
return velocity;
}
function resolveVariantFromProps(props, definition, custom, currentValues, currentVelocity) {
var _a;
if (currentValues === void 0) { currentValues = {}; }
if (currentVelocity === void 0) { currentVelocity = {}; }
/**
* If the variant definition is a function, resolve.
*/
if (typeof definition === "function") {
definition = definition(custom !== null && custom !== void 0 ? custom : props.custom, currentValues, currentVelocity);
}
/**
* If the variant definition is a variant label, or
* the function returned a variant label, resolve.
*/
if (typeof definition === "string") {
definition = (_a = props.variants) === null || _a === void 0 ? void 0 : _a[definition];
}
/**
* At this point we've resolved both functions and variant labels,
* but the resolved variant label might itself have been a function.
* If so, resolve. This can only have returned a valid target object.
*/
if (typeof definition === "function") {
definition = definition(custom !== null && custom !== void 0 ? custom : props.custom, currentValues, currentVelocity);
}
return definition;
}
function resolveVariant(visualElement, definition, custom) {
var props = visualElement.getProps();
return resolveVariantFromProps(props, definition, custom !== null && custom !== void 0 ? custom : props.custom, getCurrent(visualElement), getVelocity(visualElement));
}
function checkIfControllingVariants(props) {
var _a;
return (typeof ((_a = props.animate) === null || _a === void 0 ? void 0 : _a.start) === "function" ||
isVariantLabel(props.initial) ||
isVariantLabel(props.animate) ||
isVariantLabel(props.whileHover) ||
isVariantLabel(props.whileDrag) ||
isVariantLabel(props.whileTap) ||
isVariantLabel(props.whileFocus) ||
isVariantLabel(props.exit));
}
function checkIfVariantNode(props) {
return Boolean(checkIfControllingVariants(props) || props.variants);
}
export { checkIfControllingVariants, checkIfVariantNode, isVariantLabel, isVariantLabels, resolveVariant, resolveVariantFromProps };