125 lines
4.0 KiB
JavaScript
125 lines
4.0 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.popupOffset = 10;
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this.lastMosePos = null;
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this.enabled = false;
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this.popup = document.createElement('div');
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this.popup.classList.add('yomichan-popup');
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this.popup.addEventListener('mousedown', (e) => e.stopPropagation());
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this.popup.addEventListener('scroll', (e) => e.stopPropagation());
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const base = document.body.appendChild('div');
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base.createShadowRoot().appendChild(this.popup);
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chrome.runtime.onMessage.addListener(this.onMessage.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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getState((state) => this.setEnabled(state === 'enabled'));
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}
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onKeyDown(e) {
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if (this.enabled && this.lastMousePos !== null && (e.keyCode === 16 || e.charCode === 16)) {
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this.searchAtPoint(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 === 2)) {
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this.searchAtPoint(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 === 2)) {
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this.searchAtPoint(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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onMessage(request, sender, callback) {
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this.setEnabled(request === 'enabled');
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callback();
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}
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searchAtPoint(point) {
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const range = getRangeAtPoint(point, 10);
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if (range === null) {
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this.hidePopup();
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return;
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}
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const rect = getRangePaddedRect(range);
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if (point.x < rect.left || point.x > rect.right) {
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this.hidePopup();
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return;
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}
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findTerm(range.toString(), ({results, length}) => {
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if (length === 0) {
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this.hidePopup();
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} else {
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range.setEnd(range.endContainer, range.startOffset + length);
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renderTemplate({defs: results}, 'defs.html', (html) => {
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this.popup.innerHTML = html;
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this.showPopup(range);
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});
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}
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});
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}
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showPopup(range) {
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const selection = window.getSelection();
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selection.removeAllRanges();
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selection.addRange(range);
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const pos = getPopupPositionForRange(this.popup, range, this.popupOffset);
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this.popup.style.left = pos.x + 'px';
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this.popup.style.top = pos.y + 'px';
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this.popup.style.visibility = 'visible';
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}
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hidePopup() {
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if (this.popup.style.visibility !== 'hidden') {
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const selection = window.getSelection();
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selection.removeAllRanges();
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this.popup.style.visibility = 'hidden';
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}
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}
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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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}
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window.yomiClient = new Client();
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