@shopify/draggable
Version:
The JavaScript Drag & Drop library your grandparents warned you about.
347 lines (300 loc) • 10.4 kB
JavaScript
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if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
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define("SwapAnimation", [], factory);
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exports["SwapAnimation"] = factory();
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/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* All draggable plugins inherit from this class.
* @abstract
* @class AbstractPlugin
* @module AbstractPlugin
*/
class AbstractPlugin {
/**
* AbstractPlugin constructor.
* @constructs AbstractPlugin
* @param {Draggable} draggable - Draggable instance
*/
constructor(draggable) {
/**
* Draggable instance
* @property draggable
* @type {Draggable}
*/
this.draggable = draggable;
}
/**
* Override to add listeners
* @abstract
*/
attach() {
throw new Error('Not Implemented');
}
/**
* Override to remove listeners
* @abstract
*/
detach() {
throw new Error('Not Implemented');
}
}
exports.default = AbstractPlugin;
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _AbstractPlugin = __webpack_require__(0);
var _AbstractPlugin2 = _interopRequireDefault(_AbstractPlugin);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
exports.default = _AbstractPlugin2.default;
/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.defaultOptions = undefined;
var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
var _AbstractPlugin = __webpack_require__(1);
var _AbstractPlugin2 = _interopRequireDefault(_AbstractPlugin);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const onSortableSorted = Symbol('onSortableSorted');
/**
* SwapAnimation default options
* @property {Object} defaultOptions
* @property {Number} defaultOptions.duration
* @property {String} defaultOptions.easingFunction
* @property {Boolean} defaultOptions.horizontal
* @type {Object}
*/
const defaultOptions = exports.defaultOptions = {
duration: 150,
easingFunction: 'ease-in-out',
horizontal: false
};
/**
* SwapAnimation plugin adds swap animations for sortable
* @class SwapAnimation
* @module SwapAnimation
* @extends AbstractPlugin
*/
class SwapAnimation extends _AbstractPlugin2.default {
/**
* SwapAnimation constructor.
* @constructs SwapAnimation
* @param {Draggable} draggable - Draggable instance
*/
constructor(draggable) {
super(draggable);
/**
* SwapAnimation options
* @property {Object} options
* @property {Number} defaultOptions.duration
* @property {String} defaultOptions.easingFunction
* @type {Object}
*/
this.options = _extends({}, defaultOptions, this.getOptions());
/**
* Last animation frame
* @property {Number} lastAnimationFrame
* @type {Number}
*/
this.lastAnimationFrame = null;
this[onSortableSorted] = this[onSortableSorted].bind(this);
}
/**
* Attaches plugins event listeners
*/
attach() {
this.draggable.on('sortable:sorted', this[onSortableSorted]);
}
/**
* Detaches plugins event listeners
*/
detach() {
this.draggable.off('sortable:sorted', this[onSortableSorted]);
}
/**
* Returns options passed through draggable
* @return {Object}
*/
getOptions() {
return this.draggable.options.swapAnimation || {};
}
/**
* Sortable sorted handler
* @param {SortableSortedEvent} sortableEvent
* @private
*/
[onSortableSorted]({ oldIndex, newIndex, dragEvent }) {
const { source, over } = dragEvent;
cancelAnimationFrame(this.lastAnimationFrame);
// Can be done in a separate frame
this.lastAnimationFrame = requestAnimationFrame(() => {
if (oldIndex >= newIndex) {
animate(source, over, this.options);
} else {
animate(over, source, this.options);
}
});
}
}
exports.default = SwapAnimation; /**
* Animates two elements
* @param {HTMLElement} from
* @param {HTMLElement} to
* @param {Object} options
* @param {Number} options.duration
* @param {String} options.easingFunction
* @param {String} options.horizontal
* @private
*/
function animate(from, to, { duration, easingFunction, horizontal }) {
for (const element of [from, to]) {
element.style.pointerEvents = 'none';
}
if (horizontal) {
const width = from.offsetWidth;
from.style.transform = `translate3d(${width}px, 0, 0)`;
to.style.transform = `translate3d(-${width}px, 0, 0)`;
} else {
const height = from.offsetHeight;
from.style.transform = `translate3d(0, ${height}px, 0)`;
to.style.transform = `translate3d(0, -${height}px, 0)`;
}
requestAnimationFrame(() => {
for (const element of [from, to]) {
element.addEventListener('transitionend', resetElementOnTransitionEnd);
element.style.transition = `transform ${duration}ms ${easingFunction}`;
element.style.transform = '';
}
});
}
/**
* Resets animation style properties after animation has completed
* @param {Event} event
* @private
*/
function resetElementOnTransitionEnd(event) {
event.target.style.transition = '';
event.target.style.pointerEvents = '';
event.target.removeEventListener('transitionend', resetElementOnTransitionEnd);
}
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.defaultOptions = undefined;
var _SwapAnimation = __webpack_require__(2);
var _SwapAnimation2 = _interopRequireDefault(_SwapAnimation);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
exports.default = _SwapAnimation2.default;
exports.defaultOptions = _SwapAnimation.defaultOptions;
/***/ })
/******/ ]);
});