import { isDef, isNumber, isPlainObject, isPromise } from './validator';
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import { canIUseGroupSetData, canIUseNextTick } from './version';
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export function range(num, min, max) {
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return Math.min(Math.max(num, min), max);
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}
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export function nextTick(cb) {
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if (canIUseNextTick()) {
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wx.nextTick(cb);
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} else {
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setTimeout(() => {
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cb();
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}, 1000 / 30);
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}
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}
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let systemInfo;
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export function getSystemInfoSync() {
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if (systemInfo == null) {
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systemInfo = wx.getSystemInfoSync();
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}
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return systemInfo;
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}
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export function addUnit(value) {
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if (!isDef(value)) {
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return undefined;
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}
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value = String(value);
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return isNumber(value) ? `${value}px` : value;
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}
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export function requestAnimationFrame(cb) {
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const systemInfo = getSystemInfoSync();
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if (systemInfo.platform === 'devtools') {
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return setTimeout(() => {
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cb();
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}, 1000 / 30);
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}
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return wx
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.createSelectorQuery()
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.selectViewport()
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.boundingClientRect()
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.exec(() => {
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cb();
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});
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}
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export function pickExclude(obj, keys) {
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if (!isPlainObject(obj)) {
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return {};
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}
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return Object.keys(obj).reduce((prev, key) => {
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if (!keys.includes(key)) {
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prev[key] = obj[key];
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}
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return prev;
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}, {});
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}
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export function getRect(context, selector) {
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return new Promise((resolve) => {
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wx.createSelectorQuery()
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.in(context)
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.select(selector)
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.boundingClientRect()
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.exec((rect = []) => resolve(rect[0]));
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});
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}
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export function getAllRect(context, selector) {
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return new Promise((resolve) => {
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wx.createSelectorQuery()
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.in(context)
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.selectAll(selector)
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.boundingClientRect()
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.exec((rect = []) => resolve(rect[0]));
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});
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}
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export function groupSetData(context, cb) {
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if (canIUseGroupSetData()) {
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context.groupSetData(cb);
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} else {
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cb();
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}
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}
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export function toPromise(promiseLike) {
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if (isPromise(promiseLike)) {
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return promiseLike;
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}
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return Promise.resolve(promiseLike);
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}
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export function getCurrentPage() {
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const pages = getCurrentPages();
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return pages[pages.length - 1];
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}
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