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/*
* Copyright (C) 2016 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/>.
*/
function invokeBgApi(action, params) {
return new Promise((resolve, reject) => {
chrome.runtime.sendMessage({action, params}, ({result, error}) => {
if (error) {
reject(error);
} else {
resolve(result);
}
});
});
}
function isEnabled() {
return invokeBgApi('getEnabled', {});
}
function getOptions() {
return invokeBgApi('getOptions', {});
}
function findTerm(text) {
return invokeBgApi('findTerm', {text});
}
function findKanji(text) {
return invokeBgApi('findKanji', {text});
}
function renderText(data, template) {
return invokeBgApi('renderText', {data, template});
}
function canAddDefinitions(definitions, modes) {
return invokeBgApi('canAddDefinitions', {definitions, modes}).catch(() => null);
}
function addDefinition(definition, mode) {
return invokeBgApi('addDefinition', {definition, mode});
}
function textSourceFromPoint(point) {
const element = document.elementFromPoint(point.x, point.y);
if (element !== null) {
const names = ['IMG', 'INPUT', 'BUTTON', 'TEXTAREA'];
if (names.includes(element.nodeName)) {
return new TextSourceElement(element);
}
}
const range = document.caretRangeFromPoint(point.x, point.y);
if (range !== null) {
return new TextSourceRange(range);
}
return null;
}
function extractSentence(source, extent) {
const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
const terminators = '…。．.？?！!';
const sourceLocal = source.clone();
const position = sourceLocal.setStartOffset(extent);
sourceLocal.setEndOffset(position + extent);
const content = sourceLocal.text();
let quoteStack = [];
let startPos = 0;
for (let i = position; i >= startPos; --i) {
const c = content[i];
if (quoteStack.length === 0 && (terminators.includes(c) || c in quotesFwd)) {
startPos = i + 1;
break;
}
if (quoteStack.length > 0 && c === quoteStack[0]) {
quoteStack.pop();
} else if (c in quotesBwd) {
quoteStack = [quotesBwd[c]].concat(quoteStack);
}
}
quoteStack = [];
let endPos = content.length;
for (let i = position; i < endPos; ++i) {
const c = content[i];
if (quoteStack.length === 0) {
if (terminators.includes(c)) {
endPos = i + 1;
break;
}
else if (c in quotesBwd) {
endPos = i;
break;
}
}
if (quoteStack.length > 0 && c === quoteStack[0]) {
quoteStack.pop();
} else if (c in quotesFwd) {
quoteStack = [quotesFwd[c]].concat(quoteStack);
}
}
return content.substring(startPos, endPos).trim();
}
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