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30 lines
805 B
TypeScript
30 lines
805 B
TypeScript
import {SlideEdgeGesture} from '../../gestures/slide-edge-gesture';
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export class SwipeBackGesture extends SlideEdgeGesture {
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constructor(element: Element, opts: Object = {}, navCtrl) {
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super(element, opts);
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// Can check corners through use of eg 'left top'
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this.edges = opts.edge.split(' ');
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this.threshold = opts.threshold;
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this.navCtrl = navCtrl;
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}
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onSlideStart() {
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this.navCtrl.swipeBackStart();
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}
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onSlide(slide, ev) {
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this.navCtrl.swipeBackProgress(slide.distance / slide.max);
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}
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onSlideEnd(slide, ev) {
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let shouldComplete = (Math.abs(ev.velocityX) > 0.2 || Math.abs(slide.delta) > Math.abs(slide.max) * 0.5);
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// TODO: calculate a better playback rate depending on velocity and distance
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this.navCtrl.swipeBackEnd(shouldComplete, 1);
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}
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}
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