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import computeAutoPlacement from '../utils/computeAutoPlacement';
import getReferenceOffsets from '../utils/getReferenceOffsets';
import getPopperOffsets from '../utils/getPopperOffsets';
import runModifiers from '../utils/runModifiers';
/**
* Updates the position of the popper, computing the new offsets and applying
* the new style.<br />
* Prefer `scheduleUpdate` over `update` because of performance reasons.
* @method
* @memberof Popper
*/
export default function update() {
// if popper is destroyed, don't perform any further update
if (this.state.isDestroyed) {
return;
}
let data = {
instance: this,
styles: {},
arrowStyles: {},
attributes: {},
flipped: false,
offsets: {},
};
// compute reference element offsets
data.offsets.reference = getReferenceOffsets(
this.state,
this.popper,
this.reference,
this.options.positionFixed
);
// compute auto placement, store placement inside the data object,
// modifiers will be able to edit `placement` if needed
// and refer to originalPlacement to know the original value
data.placement = computeAutoPlacement(
this.options.placement,
data.offsets.reference,
this.popper,
this.reference,
this.options.modifiers.flip.boundariesElement,
this.options.modifiers.flip.padding
);
// store the computed placement inside `originalPlacement`
data.originalPlacement = data.placement;
data.positionFixed = this.options.positionFixed;
// compute the popper offsets
data.offsets.popper = getPopperOffsets(
this.popper,
data.offsets.reference,
data.placement
);
data.offsets.popper.position = this.options.positionFixed
? 'fixed'
: 'absolute';
// run the modifiers
data = runModifiers(this.modifiers, data);
// the first `update` will call `onCreate` callback
// the other ones will call `onUpdate` callback
if (!this.state.isCreated) {
this.state.isCreated = true;
this.options.onCreate(data);
} else {
this.options.onUpdate(data);
}
}