289 lines
9.2 KiB
JavaScript
289 lines
9.2 KiB
JavaScript
/*
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* Copyright (C) 2016 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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class Client {
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constructor() {
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this.popup = new Popup();
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this.audio = {};
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this.lastMousePos = null;
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this.lastTextSource = null;
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this.activateKey = 16;
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this.activateBtn = 2;
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this.enabled = false;
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this.options = {};
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this.definitions = null;
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this.sequence = 0;
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this.fgRoot = chrome.extension.getURL('fg');
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chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
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window.addEventListener('message', this.onFrameMessage.bind(this));
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window.addEventListener('mousedown', this.onMouseDown.bind(this));
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window.addEventListener('mousemove', this.onMouseMove.bind(this));
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window.addEventListener('keydown', this.onKeyDown.bind(this));
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window.addEventListener('scroll', (e) => this.hidePopup());
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window.addEventListener('resize', (e) => this.hidePopup());
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}
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onKeyDown(e) {
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if (this.enabled && this.lastMousePos !== null && (e.keyCode === this.activateKey || e.charCode === this.activateKey)) {
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this.searchAt(this.lastMousePos);
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}
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}
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onMouseMove(e) {
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this.lastMousePos = {x: e.clientX, y: e.clientY};
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if (this.enabled && (e.shiftKey || e.which === this.activateBtn)) {
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this.searchAt(this.lastMousePos);
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}
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}
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onMouseDown(e) {
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this.lastMousePos = {x: e.clientX, y: e.clientY};
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if (this.enabled && (e.shiftKey || e.which === this.activateBtn)) {
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this.searchAt(this.lastMousePos);
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} else {
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this.hidePopup();
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}
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}
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onBgMessage({action, params}, sender, callback) {
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const method = this['api_' + action];
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if (typeof(method) === 'function') {
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method.call(this, params);
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}
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callback();
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}
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onFrameMessage(e) {
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const {action, params} = e.data, method = this['api_' + action];
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if (typeof(method) === 'function') {
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method.call(this, params);
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}
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}
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searchAt(point) {
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const textSource = Client.textSourceFromPoint(point);
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if (textSource === null || !textSource.containsPoint(point)) {
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this.hidePopup();
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return;
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}
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if (this.lastTextSource !== null && this.lastTextSource.equals(textSource)) {
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return;
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}
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textSource.setEndOffset(this.options.scanLength);
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bgFindTerm(textSource.text(), ({definitions, length}) => {
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if (length === 0) {
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this.hidePopup();
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} else {
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textSource.setEndOffset(length);
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const sentence = Client.extractSentence(textSource, this.opts.sentenceExtent);
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definitions.forEach((definition) => {
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definition.url = window.location.href;
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definition.sentence = sentence;
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});
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const sequence = ++this.sequence;
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bgRenderText(
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{definitions, root: this.fgRoot, options: this.options, sequence},
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'term-list.html',
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(content) => {
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this.definitions = definitions;
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this.showPopup(textSource, content);
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bgCanAddDefinitions(definitions, ['vocab_kanji', 'vocab_kana'], (states) => {
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if (states !== null) {
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states.forEach((state, index) => this.popup.sendMessage('setActionState', {index, state, sequence}));
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}
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});
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}
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);
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}
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});
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}
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showPopup(textSource, content) {
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this.popup.showNextTo(textSource.getRect(), content);
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if (this.options.selectMatchedText) {
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textSource.select();
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}
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this.lastTextSource = textSource;
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}
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hidePopup() {
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this.popup.hide();
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if (this.options.selectMatchedText && this.lastTextSource !== null) {
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this.lastTextSource.deselect();
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}
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this.lastTextSource = null;
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this.definitions = null;
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}
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api_setOptions(opts) {
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this.options = opts;
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}
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api_setEnabled(enabled) {
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if (!(this.enabled = enabled)) {
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this.hidePopup();
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}
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}
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api_addNote({index, mode}) {
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const state = {};
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state[mode] = false;
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bgAddDefinition(this.definitions[index], mode, (success) => {
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if (success) {
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this.popup.sendMessage('setActionState', {index, state, sequence: this.sequence});
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} else {
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alert('Note could not be added');
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}
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});
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}
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api_playAudio(index) {
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const definition = this.definitions[index];
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let url = `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?kanji=${encodeURIComponent(definition.expression)}`;
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if (definition.reading) {
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url += `&kana=${encodeURIComponent(definition.reading)}`;
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}
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for (let key in this.audio) {
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this.audio[key].pause();
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}
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const audio = this.audio[url] || new Audio(url);
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audio.currentTime = 0;
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audio.play();
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this.audio[url] = audio;
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}
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api_displayKanji(kanji) {
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bgFindKanji(kanji, (definitions) => {
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definitions.forEach((definition) => {
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definition.url = window.location.href;
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});
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const sequence = ++this.sequence;
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bgRenderText(
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{definitions, root: this.fgRoot, options: this.options, sequence},
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'kanji-list.html',
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(content) => {
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this.definitions = definitions;
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this.popup.setContent(content, definitions);
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bgCanAddDefinitions(definitions, ['kanji'], (states) => {
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if (states !== null) {
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states.forEach((state, index) => this.popup.sendMessage('setActionState', {index, state, sequence}));
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}
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});
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}
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);
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});
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}
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static textSourceFromPoint(point) {
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const element = document.elementFromPoint(point.x, point.y);
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if (element !== null) {
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switch (element.nodeName) {
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case 'IMG':
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return new TextSourceImage(element);
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case 'INPUT':
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case 'BUTTON':
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case 'TEXTAREA':
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return new TextSourceInput(element);
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}
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}
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const range = document.caretRangeFromPoint(point.x, point.y);
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if (range !== null) {
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return new TextSourceRange(range);
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}
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return null;
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}
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static extractSentence(source, extent) {
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const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
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const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
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const terminators = '…。..??!!';
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const sourceLocal = source.clone();
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const position = sourceLocal.setStartOffset(extent);
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sourceLocal.setEndOffset(position + extent);
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const content = sourceLocal.text();
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let quoteStack = [];
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let startPos = 0;
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for (let i = position; i >= startPos; --i) {
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const c = content[i];
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if (quoteStack.length === 0 && (terminators.indexOf(c) !== -1 || c in quotesFwd)) {
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startPos = i + 1;
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break;
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}
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if (quoteStack.length > 0 && c === quoteStack[0]) {
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quoteStack.pop();
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} else if (c in quotesBwd) {
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quoteStack = [quotesBwd[c]].concat(quoteStack);
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}
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}
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quoteStack = [];
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let endPos = content.length;
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for (let i = position; i < endPos; ++i) {
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const c = content[i];
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if (quoteStack.length === 0) {
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if (terminators.indexOf(c) !== -1) {
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endPos = i + 1;
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break;
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}
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else if (c in quotesBwd) {
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endPos = i;
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break;
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}
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}
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if (quoteStack.length > 0 && c === quoteStack[0]) {
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quoteStack.pop();
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} else if (c in quotesFwd) {
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quoteStack = [quotesFwd[c]].concat(quoteStack);
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}
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}
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return content.substring(startPos, endPos).trim();
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}
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}
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window.yomiClient = new Client();
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