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/*
* Copyright (C) 2019 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 <http://www.gnu.org/licenses/>.
*/
class QueryParser {
constructor(search) {
this.search = search;
this.pendingLookup = false;
this.clickScanPrevent = false;
this.parseResults = [];
this.queryParser = document.querySelector('#query-parser');
this.queryParserSelect = document.querySelector('#query-parser-select');
this.queryParser.addEventListener('mousedown', (e) => this.onMouseDown(e));
this.queryParser.addEventListener('mouseup', (e) => this.onMouseUp(e));
}
onError(error) {
logError(error, false);
}
onMouseDown(e) {
if (Frontend.isMouseButton('primary', e)) {
this.clickScanPrevent = false;
}
}
onMouseUp(e) {
if (
this.search.options.scanning.clickGlossary &&
!this.clickScanPrevent &&
Frontend.isMouseButton('primary', e)
) {
const selectText = this.search.options.scanning.selectText;
this.onTermLookup(e, {disableScroll: true, selectText});
}
}
onMouseMove(e) {
if (this.pendingLookup || Frontend.isMouseButton('primary', e)) {
return;
}
const scanningOptions = this.search.options.scanning;
const scanningModifier = scanningOptions.modifier;
if (!(
Frontend.isScanningModifierPressed(scanningModifier, e) ||
(scanningOptions.middleMouse && Frontend.isMouseButton('auxiliary', e))
)) {
return;
}
const selectText = this.search.options.scanning.selectText;
this.onTermLookup(e, {disableScroll: true, disableHistory: true, selectText});
}
onMouseLeave(e) {
this.clickScanPrevent = true;
clearTimeout(e.target.dataset.timer);
delete e.target.dataset.timer;
}
onTermLookup(e, params) {
this.pendingLookup = true;
(async () => {
await this.search.onTermLookup(e, params);
this.pendingLookup = false;
})();
}
onParserChange(e) {
const selectedParser = e.target.value;
apiOptionsSet({parsing: {selectedParser}}, this.search.getOptionsContext());
this.renderParseResult(this.getParseResult());
}
getParseResult() {
return this.parseResults.find(r => r.id === this.search.options.parsing.selectedParser);
}
async setText(text) {
this.search.setSpinnerVisible(true);
await this.setPreview(text);
this.parseResults = await this.parseText(text);
if (this.parseResults.length > 0) {
if (this.search.options.parsing.selectedParser === null || !this.getParseResult()) {
const selectedParser = this.parseResults[0].id;
apiOptionsSet({parsing: {selectedParser}}, this.search.getOptionsContext());
}
}
this.renderParserSelect();
await this.renderParseResult();
this.search.setSpinnerVisible(false);
}
async parseText(text) {
const results = [];
if (this.search.options.parsing.enableScanningParser) {
results.push({
name: 'Scanning parser',
id: 'scan',
parsedText: await apiTextParse(text, this.search.getOptionsContext())
});
}
if (this.search.options.parsing.enableMecabParser) {
let mecabResults = await apiTextParseMecab(text, this.search.getOptionsContext());
for (const mecabDictName in mecabResults) {
results.push({
name: `MeCab: ${mecabDictName}`,
id: `mecab-${mecabDictName}`,
parsedText: mecabResults[mecabDictName]
});
}
}
return results;
}
async setPreview(text) {
const previewTerms = [];
while (text.length > 0) {
const tempText = text.slice(0, 2);
previewTerms.push([{text: Array.from(tempText)}]);
text = text.slice(2);
}
this.queryParser.innerHTML = await apiTemplateRender('query-parser.html', {
terms: previewTerms,
preview: true
});
for (const charElement of this.queryParser.querySelectorAll('.query-parser-char')) {
this.activateScanning(charElement);
}
}
renderParserSelect() {
this.queryParserSelect.innerHTML = '';
if (this.parseResults.length > 1) {
const select = document.createElement('select');
select.classList.add('form-control');
for (const parseResult of this.parseResults) {
const option = document.createElement('option');
option.value = parseResult.id;
option.innerText = parseResult.name;
option.defaultSelected = this.search.options.parsing.selectedParser === parseResult.id;
select.appendChild(option);
}
select.addEventListener('change', this.onParserChange.bind(this));
this.queryParserSelect.appendChild(select);
}
}
async renderParseResult() {
const parseResult = this.getParseResult();
if (!parseResult) {
this.queryParser.innerHTML = '';
return;
}
this.queryParser.innerHTML = await apiTemplateRender(
'query-parser.html',
{terms: QueryParser.processParseResultForDisplay(parseResult.parsedText)}
);
for (const charElement of this.queryParser.querySelectorAll('.query-parser-char')) {
this.activateScanning(charElement);
}
}
activateScanning(element) {
element.addEventListener('mousemove', (e) => {
clearTimeout(e.target.dataset.timer);
if (this.search.options.scanning.modifier === 'none') {
e.target.dataset.timer = setTimeout(() => {
this.onMouseMove(e);
delete e.target.dataset.timer;
}, this.search.options.scanning.delay);
} else {
this.onMouseMove(e);
}
});
element.addEventListener('mouseleave', (e) => {
this.onMouseLeave(e);
});
}
static processParseResultForDisplay(result) {
return result.map((term) => {
return term.filter(part => part.text.trim()).map((part) => {
return {
text: Array.from(part.text),
reading: part.reading,
raw: !part.reading || !part.reading.trim(),
};
});
});
}
}
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