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Fix transitions aborting on repeated style values #257

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15 changes: 13 additions & 2 deletions createAnimatableComponent.js
Original file line number Diff line number Diff line change
Expand Up @@ -336,7 +336,18 @@ export default function createAnimatableComponent(WrappedComponent) {
} = props;

if (transition) {
const oldProps = this.props;
const values = getStyleValues(transition, props.style);
// Don't transition values that are already correct or currently transitioning to the new value.
// Prevents transitions being aborted when props are repeated before transition ends.
const oldValues = getStyleValues(oldProps.transition, oldProps.style);
Object.keys(values).forEach( styleAttribute => {
const oldValue = oldValues[styleAttribute];
const newValue = values[styleAttribute];
if (oldValue === newValue) {
delete values[styleAttribute];
}
});
this.transitionTo(values, duration, easing, delay);
} else if (!deepEquals(animation, this.props.animation)) {
if (animation) {
Expand Down Expand Up @@ -461,7 +472,7 @@ export default function createAnimatableComponent(WrappedComponent) {
}
const needsInterpolation =
INTERPOLATION_STYLE_PROPERTIES.indexOf(property) !== -1 ||
typeof value !== 'number';
typeof toValue !== 'number';
const needsZeroClamping =
ZERO_CLAMPED_STYLE_PROPERTIES.indexOf(property) !== -1;
if (needsInterpolation) {
Expand Down Expand Up @@ -511,7 +522,7 @@ export default function createAnimatableComponent(WrappedComponent) {
const toValue = toValuesFlat[property];
const needsInterpolation =
INTERPOLATION_STYLE_PROPERTIES.indexOf(property) !== -1 ||
typeof value !== 'number';
typeof toValue !== 'number';
const needsZeroClamping =
ZERO_CLAMPED_STYLE_PROPERTIES.indexOf(property) !== -1;
const transitionStyle = this.state.transitionStyle[property];
Expand Down