vxe-pc-ui
Version:
A vue based PC component library
256 lines (255 loc) • 9.35 kB
JavaScript
import XEUtils from 'xe-utils';
let tpImgEl;
export function initTpImg() {
if (!tpImgEl) {
tpImgEl = new Image();
tpImgEl.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=';
}
return tpImgEl;
}
export function getTpImg() {
if (!tpImgEl) {
return initTpImg();
}
return tpImgEl;
}
const reClsMap = {};
function getClsRE(cls) {
if (!reClsMap[cls]) {
reClsMap[cls] = new RegExp(`(?:^|\\s)${cls}(?!\\S)`, 'g');
}
return reClsMap[cls];
}
function getNodeOffset(elem, container, rest) {
if (elem) {
const parentElem = elem.parentNode;
rest.top += elem.offsetTop;
rest.left += elem.offsetLeft;
if (parentElem && parentElem !== document.documentElement && parentElem !== document.body) {
rest.top -= parentElem.scrollTop;
rest.left -= parentElem.scrollLeft;
}
if (container && (elem === container || elem.offsetParent === container) ? 0 : elem.offsetParent) {
return getNodeOffset(elem.offsetParent, container, rest);
}
}
return rest;
}
export function isPx(val) {
return val && /^\d+(\.\d+)?(px)?$/.test(val);
}
export function isScale(val) {
return val && /^\d+(\.\d+)?%$/.test(val);
}
export function hasClass(elem, cls) {
return !!(elem && elem.className && elem.className.match && elem.className.match(getClsRE(cls)));
}
export function removeClass(elem, cls) {
if (elem && hasClass(elem, cls)) {
elem.className = elem.className.replace(getClsRE(cls), '');
}
}
export function addClass(elem, cls) {
if (elem && !hasClass(elem, cls)) {
removeClass(elem, cls);
elem.className = `${elem.className} ${cls}`;
}
}
export function hasControlKey(evnt) {
return evnt.ctrlKey || evnt.metaKey;
}
export function toCssUnit(val, unit = 'px') {
if (XEUtils.isNumber(val) || /^\d+$/.test(`${val}`)) {
return `${val}${unit}`;
}
return `${val || ''}`;
}
export function getDomNode() {
const documentElement = document.documentElement;
const bodyElem = document.body;
return {
scrollTop: documentElement.scrollTop || bodyElem.scrollTop,
scrollLeft: documentElement.scrollLeft || bodyElem.scrollLeft,
visibleHeight: documentElement.clientHeight || bodyElem.clientHeight,
visibleWidth: documentElement.clientWidth || bodyElem.clientWidth
};
}
/**
* 检查触发源是否属于目标节点
*/
export function getEventTargetNode(evnt, container, queryCls, queryMethod) {
let targetElem;
let target = (evnt.target.shadowRoot && evnt.composed) ? (evnt.composedPath()[0] || evnt.target) : evnt.target;
while (target && target.nodeType && target !== document) {
if (queryCls && hasClass(target, queryCls) && (!queryMethod || queryMethod(target))) {
targetElem = target;
}
else if (target === container) {
return { flag: queryCls ? !!targetElem : true, container, targetElem: targetElem };
}
target = target.parentNode;
}
return { flag: false };
}
/**
* 获取元素相对于 document 的位置
*/
export function getOffsetPos(elem, container) {
return getNodeOffset(elem, container, { left: 0, top: 0 });
}
export function getAbsolutePos(elem) {
const bounding = elem.getBoundingClientRect();
const boundingTop = bounding.top;
const boundingLeft = bounding.left;
const { scrollTop, scrollLeft, visibleHeight, visibleWidth } = getDomNode();
return { boundingTop, top: scrollTop + boundingTop, boundingLeft, left: scrollLeft + boundingLeft, visibleHeight, visibleWidth };
}
export function getPaddingTopBottomSize(elem) {
if (elem) {
const computedStyle = getComputedStyle(elem);
const paddingTop = XEUtils.toNumber(computedStyle.paddingTop);
const paddingBottom = XEUtils.toNumber(computedStyle.paddingBottom);
return paddingTop + paddingBottom;
}
return 0;
}
export function getPaddingLeftRightSize(elem) {
if (elem) {
const computedStyle = getComputedStyle(elem);
const paddingLeft = XEUtils.toNumber(computedStyle.paddingLeft);
const paddingRight = XEUtils.toNumber(computedStyle.paddingRight);
return paddingLeft + paddingRight;
}
return 0;
}
const scrollIntoViewIfNeeded = 'scrollIntoViewIfNeeded';
const scrollIntoView = 'scrollIntoView';
export function scrollToView(elem) {
if (elem) {
if (elem[scrollIntoViewIfNeeded]) {
elem[scrollIntoViewIfNeeded]();
}
else if (elem[scrollIntoView]) {
elem[scrollIntoView]();
}
}
}
export function triggerEvent(targetElem, type) {
if (targetElem) {
targetElem.dispatchEvent(new Event(type));
}
}
export function isNodeElement(elem) {
return elem && elem.nodeType === 1;
}
export function updatePanelPlacement(targetElem, panelElem, options) {
const { placement, defaultPlacement, teleportTo, marginSize } = Object.assign({ teleportTo: false, marginSize: 18 }, options);
let panelPlacement = 'bottom';
let top = '';
let bottom = '';
let left = '';
const right = '';
let minWidth = '';
const stys = {};
if (panelElem && targetElem) {
const documentElement = document.documentElement;
const bodyElem = document.body;
const targetHeight = targetElem.offsetHeight;
const panelHeight = panelElem.offsetHeight;
const panelWidth = panelElem.offsetWidth;
const panelRect = panelElem.getBoundingClientRect();
const targetRect = targetElem.getBoundingClientRect();
const visibleHeight = documentElement.clientHeight || bodyElem.clientHeight;
const visibleWidth = documentElement.clientWidth || bodyElem.clientWidth;
minWidth = targetElem.offsetWidth;
if (teleportTo) {
left = targetRect.left;
top = targetRect.top + targetHeight;
if (placement === 'top') {
panelPlacement = 'top';
top = targetRect.top - panelHeight;
}
else if (!placement) {
if (defaultPlacement === 'top') {
panelPlacement = 'top';
top = targetRect.top - panelHeight;
// 如果上面不够放，则向下
if (top < marginSize) {
panelPlacement = 'bottom';
top = targetRect.top + targetHeight;
}
// 如果下面不够放，则向上（优先）
if (top + panelHeight + marginSize > visibleHeight) {
panelPlacement = 'top';
top = targetRect.top - panelHeight;
}
}
else {
// 如果下面不够放，则向上
if (top + panelHeight + marginSize > visibleHeight) {
panelPlacement = 'top';
top = targetRect.top - panelHeight;
}
// 如果上面不够放，则向下（优先）
if (top < marginSize) {
panelPlacement = 'bottom';
top = targetRect.top + targetHeight;
}
}
}
// 如果溢出右边
if (left + panelWidth + marginSize > visibleWidth) {
left -= left + panelWidth + marginSize - visibleWidth;
}
// 如果溢出左边
if (left < marginSize) {
left = marginSize;
}
}
else {
if (placement === 'top') {
panelPlacement = 'top';
bottom = targetHeight;
}
else if (!placement) {
// 如果下面不够放，则向上
top = targetHeight;
if (targetRect.top + targetHeight + panelHeight + marginSize > visibleHeight) {
// 如果上面不够放，则向下（优先）
if (targetRect.top - targetHeight - panelHeight > marginSize) {
panelPlacement = 'top';
top = '';
bottom = targetHeight;
}
}
}
// 是否超出右侧
if (panelRect.left + panelRect.width + marginSize > visibleWidth) {
left = -(panelRect.left + panelRect.width + marginSize - visibleWidth);
}
}
if (XEUtils.isNumber(top)) {
stys.top = toCssUnit(top);
}
if (XEUtils.isNumber(bottom)) {
stys.bottom = toCssUnit(bottom);
}
if (XEUtils.isNumber(left)) {
stys.left = toCssUnit(left);
}
if (XEUtils.isNumber(right)) {
stys.right = toCssUnit(right);
}
if (XEUtils.isNumber(minWidth)) {
stys.minWidth = toCssUnit(minWidth);
}
}
return {
top: top || 0,
bottom: bottom || 0,
left: left || 0,
right: right || 0,
style: stys,
placement: panelPlacement
};
}