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diff --git a/ext/bg/js/search-query-parser-generator.js b/ext/bg/js/search-query-parser-generator.js
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+/*
+ * Copyright (C) 2020 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+class QueryParserGenerator {
+ constructor() {
+ this._templateHandler = null;
+ }
+
+ async prepare() {
+ const html = await apiGetQueryParserTemplatesHtml();
+ this._templateHandler = new TemplateHandler(html);
+ }
+
+ createParseResult(terms, preview=false) {
+ const fragment = document.createDocumentFragment();
+ for (const term of terms) {
+ const termContainer = this._templateHandler.instantiate(preview ? 'term-preview' : 'term');
+ for (const segment of term) {
+ if (!segment.text.trim()) { continue; }
+ if (!segment.reading || !segment.reading.trim()) {
+ termContainer.appendChild(this.createSegmentText(segment.text));
+ } else {
+ termContainer.appendChild(this.createSegment(segment));
+ }
+ }
+ fragment.appendChild(termContainer);
+ }
+ return fragment;
+ }
+
+ createSegment(segment) {
+ const segmentContainer = this._templateHandler.instantiate('segment');
+ const segmentTextContainer = segmentContainer.querySelector('.query-parser-segment-text');
+ const segmentReadingContainer = segmentContainer.querySelector('.query-parser-segment-reading');
+ segmentTextContainer.appendChild(this.createSegmentText(segment.text));
+ segmentReadingContainer.innerText = segment.reading;
+ return segmentContainer;
+ }
+
+ createSegmentText(text) {
+ const fragment = document.createDocumentFragment();
+ for (const chr of text) {
+ const charContainer = this._templateHandler.instantiate('char');
+ charContainer.innerText = chr;
+ fragment.appendChild(charContainer);
+ }
+ return fragment;
+ }
+
+ createParserSelect(parseResults, selectedParser) {
+ const selectContainer = this._templateHandler.instantiate('select');
+ for (const parseResult of parseResults) {
+ const optionContainer = this._templateHandler.instantiate('select-option');
+ optionContainer.value = parseResult.id;
+ optionContainer.innerText = parseResult.name;
+ optionContainer.defaultSelected = selectedParser === parseResult.id;
+ selectContainer.appendChild(optionContainer);
+ }
+ return selectContainer;
+ }
+}