Query parser refactor (#683)

* Rename files to better match class name

* Don't pass setContent to QueryParser; use a generic event instead

1 files changed, 90 insertions, 0 deletions

diff --git a/ext/bg/js/query-parser-generator.js b/ext/bg/js/query-parser-generator.js
new file mode 100644
index 00000000..6989e157
--- /dev/null
+++ b/ext/bg/js/query-parser-generator.js
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2020  Yomichan Authors
+ *
+ * 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/>.
+ */
+
+/* global
+ * TemplateHandler
+ * api
+ */
+
+class QueryParserGenerator {
+    constructor() {
+        this._templateHandler = null;
+    }
+
+    async prepare() {
+        const html = await api.getQueryParserTemplatesHtml();
+        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.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.textContent = segment.reading;
+        return segmentContainer;
+    }
+
+    createSegmentText(text) {
+        const fragment = document.createDocumentFragment();
+        for (const chr of text) {
+            const charContainer = this._templateHandler.instantiate('char');
+            charContainer.textContent = 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;
+            switch (parseResult.source) {
+                case 'scanning-parser':
+                    optionContainer.textContent = 'Scanning parser';
+                    break;
+                case 'mecab':
+                    optionContainer.textContent = `MeCab: ${parseResult.dictionary}`;
+                    break;
+                default:
+                    optionContainer.textContent = 'Unrecognized dictionary';
+                    break;
+            }
+            optionContainer.defaultSelected = selectedParser === parseResult.id;
+            selectContainer.appendChild(optionContainer);
+        }
+        return selectContainer;
+    }
+}