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uni_modules/zebra-swiper/libs/vue2/get-changed-params.js

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+import {
+	paramsList
+} from './params-list.js';
+import {
+	isObject
+} from './utils.js';
+
+function getChangedParams(swiperParams, oldParams, children, oldChildren) {
+	const keys = [];
+	if (!oldParams) return keys;
+	const addKey = (key) => {
+		if (keys.indexOf(key) < 0) keys.push(key);
+	};
+	const oldChildrenKeys = oldChildren.map((child) => child.props && child.props.key);
+	const childrenKeys = children.map((child) => child.props && child.props.key);
+	if (oldChildrenKeys.join('') !== childrenKeys.join('')) keys.push('children');
+	if (oldChildren.length !== children.length) keys.push('children');
+	const watchParams = paramsList.filter((key) => key[0] === '_').map((key) => key.replace(/_/, ''));
+	watchParams.forEach((key) => {
+		if (key in swiperParams && key in oldParams) {
+			if (isObject(swiperParams[key]) && isObject(oldParams[key])) {
+				const newKeys = Object.keys(swiperParams[key]);
+				const oldKeys = Object.keys(oldParams[key]);
+				if (newKeys.length !== oldKeys.length) {
+					addKey(key);
+				} else {
+					newKeys.forEach((newKey) => {
+						if (swiperParams[key][newKey] !== oldParams[key][newKey]) {
+							addKey(key);
+						}
+					});
+					oldKeys.forEach((oldKey) => {
+						if (swiperParams[key][oldKey] !== oldParams[key][oldKey]) addKey(key);
+					});
+				}
+			} else if (swiperParams[key] !== oldParams[key]) {
+				addKey(key);
+			}
+		} else if (key in swiperParams && !(key in oldParams)) {
+			addKey(key);
+		} else if (!(key in swiperParams) && key in oldParams) {
+			addKey(key);
+		}
+	});
+	return keys;
+}
+
+export {
+	getChangedParams
+};