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/*
* Copyright (C) 2024 Yomitan 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/>.
*/
import {DocumentUtil} from './document-util.js';
export class TextSourceGenerator {
constructor() {
/** @type {import('text-source-generator').GetRangeFromPointHandler[]} @readonly */
this._getRangeFromPointHandlers = [];
}
/**
* @param {number} x
* @param {number} y
* @param {import('document-util').GetRangeFromPointOptions} options
* @returns {?import('text-source').TextSource}
*/
getRangeFromPoint(x, y, options) {
for (const handler of this._getRangeFromPointHandlers) {
const result = handler(x, y, options);
if (result !== null) { return result; }
}
return DocumentUtil.getRangeFromPoint(x, y, options);
}
/**
* Registers a custom handler for scanning for text or elements at the input position.
* @param {import('text-source-generator').GetRangeFromPointHandler} handler The handler callback which will be invoked when calling `getRangeFromPoint`.
*/
registerGetRangeFromPointHandler(handler) {
this._getRangeFromPointHandlers.push(handler);
}
}
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