layerAdjustment.js 1.78 KB
'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _utils = require('../utils/utils');

var _utils2 = _interopRequireDefault(_utils);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var __autoAdjustment__events__ = [];

exports.default = {
    methods: {
        layerAdjustmentOnce: function layerAdjustmentOnce(layerElement, targetElement, distance) {

            var viewportOffset = _utils2.default.getViewportOffset(targetElement),
                layerElemHeight = typeof layerElement.getBoundingClientRect !== "undefined" ? layerElement.getBoundingClientRect().height : layerElement.clientHeight;

            if (viewportOffset.bottom < layerElemHeight) {

                layerElement.style.top = viewportOffset.top - layerElemHeight - distance + 'px';
            } else {

                layerElement.style.top = viewportOffset.top + targetElement.clientHeight + distance + 'px';
            }

            layerElement.style.left = viewportOffset.left + 'px';
        },
        layerAdjustmentBind: function layerAdjustmentBind(layerElement, targetElement, distance) {
            var _this = this;

            var handler = function handler(e) {

                setTimeout(function (x) {

                    _this.layerAdjustmentOnce(layerElement, targetElement, distance);
                });
            };

            __autoAdjustment__events__.push(handler);
            _utils2.default.bind(window, 'scroll', handler);
            _utils2.default.bind(window, 'resize', handler);
        }
    },
    beforeDestroy: function beforeDestroy() {

        _utils2.default.unbind(window, 'scroll', __autoAdjustment__events__);
        _utils2.default.unbind(window, 'resize', __autoAdjustment__events__);
    }
};