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import GestureService from '../../services/gesture_service/gesture_service'
/**
* props:
* direction: a vector that indicates the direction of the intended swipe
* threshold: the minimum distance in pixels the swipe has moved on `direction'
* for swipe-finished() to have a non-zero sign
* perpendicularTolerance: see gesture_service
*
* Events:
* preview-requested(offsets)
* Emitted when the pointer has moved.
* offsets: the offsets from the start of the swipe to the current cursor position
*
* swipe-canceled()
* Emitted when the swipe has been canceled due to a pointercancel event.
*
* swipe-finished(sign: 0|-1|1)
* Emitted when the swipe has finished.
* sign: if the swipe does not meet the threshold, 0
* if the swipe meets the threshold in the positive direction, 1
* if the swipe meets the threshold in the negative direction, -1
*
* swipeless-clicked()
* Emitted when there is a click without swipe.
* This and swipe-finished() cannot be emitted for the same pointerup event.
*/
const SwipeClick = {
props: {
direction: {
type: Array
},
threshold: {
type: Function,
default: () => 30
},
perpendicularTolerance: {
type: Number,
default: 1.0
}
},
methods: {
handlePointerDown (event) {
this.$gesture.start(event)
},
handlePointerMove (event) {
this.$gesture.move(event)
},
handlePointerUp (event) {
this.$gesture.end(event)
},
handlePointerCancel (event) {
this.$gesture.cancel(event)
},
handleNativeClick (event) {
this.$gesture.click(event)
},
preview (offsets) {
this.$emit('preview-requested', offsets)
},
end (sign) {
this.$emit('swipe-finished', sign)
},
click () {
this.$emit('swipeless-clicked')
},
cancel () {
this.$emit('swipe-canceled')
}
},
created () {
this.$gesture = new GestureService.SwipeAndClickGesture({
direction: this.direction,
threshold: this.threshold,
perpendicularTolerance: this.perpendicularTolerance,
swipePreviewCallback: this.preview,
swipeEndCallback: this.end,
swipeCancelCallback: this.cancel,
swipelessClickCallback: this.click
})
}
}
export default SwipeClick
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