swan-ui/lib/utils/tool.js

Vue Components for Mobile App.

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.warning = warning;
exports.getClientHeight = getClientHeight;
exports.getClientWidth = getClientWidth;
exports.getWindowScrollTop = getWindowScrollTop;
exports.getWindowScrollLeft = getWindowScrollLeft;
exports.getOffsetTop = getOffsetTop;
exports.getOffset = getOffset;
exports.isElemOutViewport = isElemOutViewport;
function warning(format) {
    var _len = arguments.length;
    var args = Array(_len > 1 ? _len - 1 : 0);
    for (var _key = 1; _key < _len; _key++) {
        args[_key - 1] = arguments[_key];
    }

    if (format === undefined) {
        throw new Error('`warning(format, ...args)` requires a warning ' + 'message argument');
    }
    var argIndex = 0;
    var message = 'Warning: ' + format.replace(/%s/g, function () {
        return args[argIndex++];
    });
    if (typeof console !== 'undefined') {
        console.warn(message);
    }
}

function getClientHeight() {
    return window.innerHeight ? window.innerHeight : document.compatMode === 'BackCompat' ? document.body.clientHeight : document.documentElement.clientHeight;
}

function getClientWidth() {
    return window.innerWidth ? window.innerWidth : document.compatMode === 'BackCompat' ? document.body.clientWidth : document.documentElement.clientWidth;
}

function getWindowScrollTop() {
    return window.pageYOffset ? window.pageYOffset : document.compatMode === 'BackCompat' ? document.body.scrollTop : document.documentElement.scrollTop;
}

function getWindowScrollLeft() {
    return window.pageXOffset ? window.pageXOffset : document.compatMode === 'BackCompat' ? document.body.scrollLeft : document.documentElement.scrollLeft;
}

function getOffsetTop(elem) {
    var offsetTop = 0;
    if (elem.offsetParent) {
        do {
            offsetTop += elem.offsetTop;
            elem = elem.offsetParent;
        } while (elem);
    }
    return offsetTop >= 0 ? offsetTop : 0;
}

function getOffset(elem) {
    var offsetTop = 0;
    var offsetLeft = 0;
    if (elem.offsetParent) {
        do {
            offsetTop += elem.offsetTop;
            offsetLeft += elem.offsetLeft;
            elem = elem.offsetParent;
        } while (elem);
    }
    return {
        offsetTop: offsetTop >= 0 ? offsetTop : 0,
        offsetLeft: offsetLeft >= 0 ? offsetLeft : 0
    };
}

function isElemOutViewport(elem) {
    var bodyScrollTop = getWindowScrollTop();
    var elemOffsetTop = getOffsetTop(elem);
    var elemHeight = elem.offsetHeight;

    var clientHeight = getClientHeight();

    return elemOffsetTop <= bodyScrollTop + elemHeight || clientHeight + bodyScrollTop <= elemOffsetTop + elemHeight;
}