@areslabs/alita-core/lib/tran/onLayoutHandler.js

alita-core

"use strict";

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

var t = _interopRequireWildcard(require("@babel/types"));

var _ErrorLogTraverse = _interopRequireDefault(require("../util/ErrorLogTraverse"));

var _uast = require("../util/uast");

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

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

/**
 * Copyright (c) Areslabs.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

/**
 * 处理onLayout
 *
 * <View onLayout={() => {}}/> 转化为： <View class="m-lt" data-parent="{{parentDiuu}}"/>
 *
 * @param ast
 * @param info
 * @returns {any}
 */
function _default(ast, info) {
  (0, _ErrorLogTraverse.default)(ast, {
    exit: path => {
      if (path.type === 'JSXOpeningElement') {
        const attris = path.node.attributes || [];
        let hasLayout = false;
        let hasDataDiuu = false;
        let diuuValue = "";
        path.node.attributes = attris.filter(attr => {
          if (attr.type === 'JSXAttribute' && attr.name.name === 'onLayout') {
            hasLayout = true;
            return false;
          }

          if (attr.type === 'JSXAttribute' && attr.name.name === 'data-diuu') {
            hasDataDiuu = true;
          }

          if (attr.type === 'JSXAttribute' && attr.name.name === 'diuu') {
            diuuValue = attr.value.value;
          }

          return true;
        });

        if (!hasLayout) {
          // 没有onLayout属性
          return;
        }

        (0, _uast.elementAddClass)(path.node, 'm-lt');
        path.node.attributes.push(t.jsxAttribute(t.jsxIdentifier('data-parent'), t.stringLiteral(`{{parentDiuu}}`)));

        if (!hasDataDiuu) {
          path.node.attributes.push(t.jsxAttribute(t.jsxIdentifier('data-diuu'), t.stringLiteral(`{{${diuuValue}}}`)));
        }
      }
    }
  });
  return ast;
}