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|
/* ========================================================================
* Ratchet: toggles.js v2.0.2
* http://goratchet.com/components#toggles
* ========================================================================
Adapted from Brad Birdsall's swipe
* Copyright 2015 Connor Sears
* Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
* ======================================================================== */
!(function () {
'use strict';
var start = {};
var touchMove = false;
var distanceX = false;
var toggle = false;
// Original script from http://davidwalsh.name/vendor-prefix
var getBrowserCapabilities = (function () {
var styles = window.getComputedStyle(document.documentElement, '');
var pre = (Array.prototype.slice
.call(styles)
.join('')
.match(/-(moz|webkit|ms)-/) || (styles.OLink === '' && ['', 'o'])
)[1];
return {
transform: pre[0].toUpperCase() + pre.substr(1) + 'Transform'
};
})();
var transformProperty = getBrowserCapabilities.transform;
var findToggle = function (target) {
var i;
var toggles = document.querySelectorAll('.toggle');
for (; target && target !== document; target = target.parentNode) {
for (i = toggles.length; i--;) {
if (toggles[i] === target) {
return target;
}
}
}
};
window.addEventListener('touchstart', function (e) {
e = e.originalEvent || e;
toggle = findToggle(e.target);
if (!toggle) {
return;
}
var handle = toggle.querySelector('.toggle-handle');
var toggleWidth = toggle.clientWidth;
var handleWidth = handle.clientWidth;
var offset = toggle.classList.contains('active') ? (toggleWidth - handleWidth) : 0;
start = { pageX : e.touches[0].pageX - offset, pageY : e.touches[0].pageY };
touchMove = false;
});
window.addEventListener('touchmove', function (e) {
e = e.originalEvent || e;
if (e.touches.length > 1) {
return; // Exit if a pinch
}
if (!toggle) {
return;
}
var handle = toggle.querySelector('.toggle-handle');
var current = e.touches[0];
var toggleWidth = toggle.clientWidth;
var handleWidth = handle.clientWidth;
var offset = toggleWidth - handleWidth;
touchMove = true;
distanceX = current.pageX - start.pageX;
if (Math.abs(distanceX) < Math.abs(current.pageY - start.pageY)) {
return;
}
e.preventDefault();
if (distanceX < 0) {
return (handle.style[transformProperty] = 'translate3d(0,0,0)');
}
if (distanceX > offset) {
return (handle.style[transformProperty] = 'translate3d(' + offset + 'px,0,0)');
}
handle.style[transformProperty] = 'translate3d(' + distanceX + 'px,0,0)';
toggle.classList[(distanceX > (toggleWidth / 2 - handleWidth / 2)) ? 'add' : 'remove']('active');
});
window.addEventListener('touchend', function (e) {
if (!toggle) {
return;
}
var handle = toggle.querySelector('.toggle-handle');
var toggleWidth = toggle.clientWidth;
var handleWidth = handle.clientWidth;
var offset = (toggleWidth - handleWidth);
var slideOn = (!touchMove && !toggle.classList.contains('active')) || (touchMove && (distanceX > (toggleWidth / 2 - handleWidth / 2)));
if (slideOn) {
handle.style[transformProperty] = 'translate3d(' + offset + 'px,0,0)';
} else {
handle.style[transformProperty] = 'translate3d(0,0,0)';
}
toggle.classList[slideOn ? 'add' : 'remove']('active');
e = new CustomEvent('toggle', {
detail: {
isActive: slideOn
},
bubbles: true,
cancelable: true
});
toggle.dispatchEvent(e);
touchMove = false;
toggle = false;
});
}());
|
