photofloat/web/js/011-xwiper.js

/*
Xwiper

Provided by https://github.com/uxitten/xwiper/
*/

'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Xwiper = function () {
    function Xwiper(element) {
        _classCallCheck(this, Xwiper);

        this.element = null;
        this.touchStartX = 0;
        this.touchStartY = 0;
        this.touchEndX = 0;
        this.touchEndY = 0;
        this.sensitive = 50;
        this.onSwipeLeftAgent = null;
        this.onSwipeRightAgent = null;
        this.onSwipeUpAgent = null;
        this.onSwipeDownAgent = null;
        this.onTapAgent = null;

        this.onTouchStart = this.onTouchStart.bind(this);
        this.onTouchEnd = this.onTouchEnd.bind(this);
        this.onSwipeLeft = this.onSwipeLeft.bind(this);
        this.onSwipeRight = this.onSwipeRight.bind(this);
        this.onSwipeUp = this.onSwipeUp.bind(this);
        this.onSwipeDown = this.onSwipeDown.bind(this);
        this.onTap = this.onTap.bind(this);
        this.destroy = this.destroy.bind(this);
        this.handleGesture = this.handleGesture.bind(this);

        this.element = document.querySelector(element);
        this.element.addEventListener('touchstart', this.onTouchStart, false);

        this.element.addEventListener('touchend', this.onTouchEnd, false);
    }

    _createClass(Xwiper, [{
        key: 'onTouchStart',
        value: function onTouchStart(event) {
            this.touchStartX = event.changedTouches[0].screenX;
            this.touchStartY = event.changedTouches[0].screenY;
        }
    }, {
        key: 'onTouchEnd',
        value: function onTouchEnd(event) {
            this.touchEndX = event.changedTouches[0].screenX;
            this.touchEndY = event.changedTouches[0].screenY;
            this.handleGesture();
        }
    }, {
        key: 'onSwipeLeft',
        value: function onSwipeLeft(func) {
            this.onSwipeLeftAgent = func;
        }
    }, {
        key: 'onSwipeRight',
        value: function onSwipeRight(func) {
            this.onSwipeRightAgent = func;
        }
    }, {
        key: 'onSwipeUp',
        value: function onSwipeUp(func) {
            this.onSwipeUpAgent = func;
        }
    }, {
        key: 'onSwipeDown',
        value: function onSwipeDown(func) {
            this.onSwipeDownAgent = func;
        }
    }, {
        key: 'onTap',
        value: function onTap(func) {
            this.onTapAgent = func;
        }
    }, {
        key: 'destroy',
        value: function destroy() {
            this.element.removeEventListener('touchstart', this.onTouchStart);
            this.element.removeEventListener('touchend', this.onTouchEnd);
        }
    }, {
        key: 'handleGesture',
        value: function handleGesture() {
            /**
             * swiped left
             */
            if (this.touchEndX + this.sensitive <= this.touchStartX) {
                this.onSwipeLeftAgent && this.onSwipeLeftAgent();
                return 'swiped left';
            }

            /**
             * swiped right
             */
            if (this.touchEndX - this.sensitive >= this.touchStartX) {
                this.onSwipeRightAgent && this.onSwipeRightAgent();
                return 'swiped right';
            }

            /**
             * swiped up
             */
            if (this.touchEndY + this.sensitive <= this.touchStartY) {
                this.onSwipeUpAgent && this.onSwipeUpAgent();
                return 'swiped up';
            }

            /**
             * swiped down
             */
            if (this.touchEndY - this.sensitive >= this.touchStartY) {
                this.onSwipeDownAgent && this.onSwipeDownAgent();
                return 'swiped down';
            }

            /**
             * tap
             */
            if (this.touchEndY === this.touchStartY) {
                this.onTapAgent && this.onTapAgent();
                return 'tap';
            }
        }
    }]);

    return Xwiper;
}();