pdfjs-dist/lib/display/xfa_text.js

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2021 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.XfaText = void 0;

class XfaText {
  static textContent(xfa) {
    const items = [];
    const output = {
      items,
      styles: Object.create(null)
    };

    function walk(node) {
      if (!node) {
        return;
      }

      let str = null;
      const name = node.name;

      if (name === "#text") {
        str = node.value;
      } else if (!XfaText.shouldBuildText(name)) {
        return;
      } else if (node?.attributes?.textContent) {
        str = node.attributes.textContent;
      } else if (node.value) {
        str = node.value;
      }

      if (str !== null) {
        items.push({
          str
        });
      }

      if (!node.children) {
        return;
      }

      for (const child of node.children) {
        walk(child);
      }
    }

    walk(xfa);
    return output;
  }

  static shouldBuildText(name) {
    return !(name === "textarea" || name === "input" || name === "option" || name === "select");
  }

}

exports.XfaText = XfaText;