/* * 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/>. */ class Popup { constructor() { this.container = document.createElement('iframe'); this.container.id = 'yomichan-popup'; this.container.addEventListener('mousedown', e => e.stopPropagation()); this.container.addEventListener('scroll', e => e.stopPropagation()); this.container.setAttribute('src', chrome.extension.getURL('/fg/frame.html')); this.container.style.width = '0px'; this.container.style.height = '0px'; this.injected = null; } inject() { if (!this.injected) { this.injected = new Promise((resolve, reject) => { this.container.addEventListener('load', resolve); document.body.appendChild(this.container); }); } return this.injected; } show(elementRect, options) { return this.inject().then(() => { const containerStyle = window.getComputedStyle(this.container); const containerHeight = parseInt(containerStyle.height); const containerWidth = parseInt(containerStyle.width); const limitX = document.body.clientWidth; const limitY = window.innerHeight; let x = elementRect.left; let width = Math.max(containerWidth, options.general.popupWidth); const overflowX = Math.max(x + width - limitX, 0); if (overflowX > 0) { if (x >= overflowX) { x -= overflowX; } else { width = limitX; x = 0; } } let y = 0; let height = Math.max(containerHeight, options.general.popupHeight); const yBelow = elementRect.bottom + options.general.popupOffset; const yAbove = elementRect.top - options.general.popupOffset; const overflowBelow = Math.max(yBelow + height - limitY, 0); const overflowAbove = Math.max(height - yAbove, 0); if (overflowBelow > 0 || overflowAbove > 0) { if (overflowBelow < overflowAbove) { height = Math.max(height - overflowBelow, 0); y = yBelow; } else { height = Math.max(height - overflowAbove, 0); y = Math.max(yAbove - height, 0); } } else { y = yBelow; } this.container.style.left = `${x}px`; this.container.style.top = `${y}px`; this.container.style.width = `${width}px`; this.container.style.height = `${height}px`; this.container.style.visibility = 'visible'; }); } hide() { this.container.style.visibility = 'hidden'; } isVisible() { return this.injected && this.container.style.visibility !== 'hidden'; } showTermDefs(elementRect, definitions, options, context) { this.show(elementRect, options).then(() => { this.invokeApi('showTermDefs', {definitions, options, context}); }); } showKanjiDefs(elementRect, definitions, options, context) { this.show(elementRect, options).then(() => { this.invokeApi('showKanjiDefs', {definitions, options, context}); }); } showOrphaned(elementRect, options) { this.show(elementRect, options).then(() => { this.invokeApi('showOrphaned'); }); } invokeApi(action, params={}) { this.container.contentWindow.postMessage({action, params}, '*'); } }