/* * Copyright (C) 2016-2017 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(id, depth, frameIdPromise) { this.id = id; this.depth = depth; this.frameIdPromise = frameIdPromise; this.frameId = null; this.parent = null; this.child = null; this.container = document.createElement('iframe'); this.container.id = 'yomichan-float'; this.container.addEventListener('mousedown', e => e.stopPropagation()); this.container.addEventListener('scroll', e => e.stopPropagation()); this.container.setAttribute('src', chrome.extension.getURL('/fg/float.html')); this.container.style.width = '0px'; this.container.style.height = '0px'; this.injectPromise = null; this.isInjected = false; } inject(options) { if (this.injectPromise === null) { this.injectPromise = this.createInjectPromise(options); } return this.injectPromise; } async createInjectPromise(options) { try { const {frameId} = await this.frameIdPromise; if (typeof frameId === 'number') { this.frameId = frameId; } } catch (e) { // NOP } return new Promise((resolve) => { const parentFrameId = (typeof this.frameId === 'number' ? this.frameId : null); this.container.addEventListener('load', () => { this.invokeApi('popupNestedInitialize', { id: this.id, depth: this.depth, parentFrameId }); this.invokeApi('setOptions', { general: { customPopupCss: options.general.customPopupCss } }); resolve(); }); this.observeFullscreen(); this.onFullscreenChanged(); this.isInjected = true; }); } async show(elementRect, writingMode, options) { await this.inject(options); const optionsGeneral = options.general; const container = this.container; const containerRect = container.getBoundingClientRect(); const getPosition = ( writingMode === 'horizontal-tb' || optionsGeneral.popupVerticalTextPosition === 'default' ? Popup.getPositionForHorizontalText : Popup.getPositionForVerticalText ); const [x, y, width, height, below] = getPosition( elementRect, Math.max(containerRect.width, optionsGeneral.popupWidth), Math.max(containerRect.height, optionsGeneral.popupHeight), document.body.clientWidth, window.innerHeight, optionsGeneral, writingMode ); container.classList.toggle('yomichan-float-full-width', optionsGeneral.popupDisplayMode === 'full-width'); container.classList.toggle('yomichan-float-above', !below); container.style.left = `${x}px`; container.style.top = `${y}px`; container.style.width = `${width}px`; container.style.height = `${height}px`; container.style.visibility = 'visible'; this.hideChildren(); } static getPositionForHorizontalText(elementRect, width, height, maxWidth, maxHeight, optionsGeneral) { let x = elementRect.left + optionsGeneral.popupHorizontalOffset; const overflowX = Math.max(x + width - maxWidth, 0); if (overflowX > 0) { if (x >= overflowX) { x -= overflowX; } else { width = maxWidth; x = 0; } } const preferBelow = (optionsGeneral.popupHorizontalTextPosition === 'below'); const verticalOffset = optionsGeneral.popupVerticalOffset; const [y, h, below] = Popup.limitGeometry( elementRect.top - verticalOffset, elementRect.bottom + verticalOffset, height, maxHeight, preferBelow ); return [x, y, width, h, below]; } static getPositionForVerticalText(elementRect, width, height, maxWidth, maxHeight, optionsGeneral, writingMode) { const preferRight = Popup.isVerticalTextPopupOnRight(optionsGeneral.popupVerticalTextPosition, writingMode); const horizontalOffset = optionsGeneral.popupHorizontalOffset2; const verticalOffset = optionsGeneral.popupVerticalOffset2; const [x, w] = Popup.limitGeometry( elementRect.left - horizontalOffset, elementRect.right + horizontalOffset, width, maxWidth, preferRight ); const [y, h, below] = Popup.limitGeometry( elementRect.bottom - verticalOffset, elementRect.top + verticalOffset, height, maxHeight, true ); return [x, y, w, h, below]; } static isVerticalTextPopupOnRight(positionPreference, writingMode) { switch (positionPreference) { case 'before': return !Popup.isWritingModeLeftToRight(writingMode); case 'after': return Popup.isWritingModeLeftToRight(writingMode); case 'left': return false; case 'right': return true; } } static isWritingModeLeftToRight(writingMode) { switch (writingMode) { case 'vertical-lr': case 'sideways-lr': return true; default: return false; } } static limitGeometry(positionBefore, positionAfter, size, limit, preferAfter) { let after = preferAfter; let position = 0; const overflowBefore = Math.max(0, size - positionBefore); const overflowAfter = Math.max(0, positionAfter + size - limit); if (overflowAfter > 0 || overflowBefore > 0) { if (overflowAfter < overflowBefore) { size = Math.max(0, size - overflowAfter); position = positionAfter; after = true; } else { size = Math.max(0, size - overflowBefore); position = Math.max(0, positionBefore - size); after = false; } } else { position = preferAfter ? positionAfter : positionBefore - size; } return [position, size, after]; } async showOrphaned(elementRect, writingMode, options) { await this.show(elementRect, writingMode, options); this.invokeApi('orphaned'); } hide() { this.hideChildren(); this.hideContainer(); this.focusParent(); } hideChildren() { // recursively hides all children if (this.child && !this.child.isContainerHidden()) { this.child.hide(); } } hideContainer() { this.container.style.visibility = 'hidden'; } isContainerHidden() { return (this.container.style.visibility === 'hidden'); } isVisible() { return this.isInjected && this.container.style.visibility !== 'hidden'; } setVisible(visible) { if (visible) { this.container.style.setProperty('display', ''); } else { this.container.style.setProperty('display', 'none', 'important'); } } focusParent() { if (this.parent && this.parent.container) { // Chrome doesn't like focusing iframe without contentWindow. this.parent.container.contentWindow.focus(); } else { // Firefox doesn't like focusing window without first blurring the iframe. // this.container.contentWindow.blur() doesn't work on Firefox for some reason. this.container.blur(); // This is needed for Chrome. window.focus(); } } async containsPoint({x, y}) { for (let popup = this; popup !== null && popup.isVisible(); popup = popup.child) { const rect = popup.container.getBoundingClientRect(); if (x >= rect.left && y >= rect.top && x < rect.right && y < rect.bottom) { return true; } } return false; } async termsShow(elementRect, writingMode, definitions, options, context) { await this.show(elementRect, writingMode, options); this.invokeApi('termsShow', {definitions, options, context}); } async kanjiShow(elementRect, writingMode, definitions, options, context) { await this.show(elementRect, writingMode, options); this.invokeApi('kanjiShow', {definitions, options, context}); } clearAutoPlayTimer() { if (this.isInjected) { this.invokeApi('clearAutoPlayTimer'); } } invokeApi(action, params={}) { this.container.contentWindow.postMessage({action, params}, '*'); } observeFullscreen() { const fullscreenEvents = [ 'fullscreenchange', 'MSFullscreenChange', 'mozfullscreenchange', 'webkitfullscreenchange' ]; for (const eventName of fullscreenEvents) { document.addEventListener(eventName, () => this.onFullscreenChanged(), false); } } getFullscreenElement() { return ( document.fullscreenElement || document.msFullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement ); } onFullscreenChanged() { const parent = (this.getFullscreenElement() || document.body || null); if (parent !== null && this.container.parentNode !== parent) { parent.appendChild(this.container); } } }