f84f2646f4
This fixes invalid type references (either due to invalid paths for the import or missing imports) in the JS doc, as well as some missing or invalid parameter names for @param annotations.
82 lines
2.1 KiB
JavaScript
82 lines
2.1 KiB
JavaScript
/* Copyright 2021 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/** @typedef {import("./api").TextContent} TextContent */
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class XfaText {
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/**
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* Walk an XFA tree and create an array of text nodes that is compatible
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* with a regular PDFs TextContent. Currently, only TextItem.str is supported,
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* all other fields and styles haven't been implemented.
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*
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* @param {Object} xfa - An XFA fake DOM object.
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*
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* @returns {TextContent}
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*/
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static textContent(xfa) {
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const items = [];
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const output = {
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items,
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styles: Object.create(null),
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};
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function walk(node) {
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if (!node) {
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return;
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}
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let str = null;
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const name = node.name;
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if (name === "#text") {
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str = node.value;
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} else if (!XfaText.shouldBuildText(name)) {
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return;
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} else if (node?.attributes?.textContent) {
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str = node.attributes.textContent;
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} else if (node.value) {
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str = node.value;
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}
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if (str !== null) {
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items.push({
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str,
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});
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}
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if (!node.children) {
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return;
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}
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for (const child of node.children) {
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walk(child);
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}
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}
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walk(xfa);
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return output;
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}
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/**
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* @param {string} name - DOM node name. (lower case)
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*
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* @returns {boolean} true if the DOM node should have a corresponding text
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* node.
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*/
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static shouldBuildText(name) {
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return !(
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name === "textarea" ||
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name === "input" ||
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name === "option" ||
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name === "select"
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);
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}
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}
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export { XfaText };
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