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/*
* 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() {
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.injected = null;
}
inject() {
if (!this.injected) {
this.injected = new Promise((resolve, reject) => {
this.container.addEventListener('load', resolve);
this.observeFullscreen();
this.onFullscreenChanged();
});
}
return this.injected;
}
async show(elementRect, options) {
await this.inject();
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 + options.general.popupHorizontalOffset;
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 above = false;
let y = 0;
let height = Math.max(containerHeight, options.general.popupHeight);
const yBelow = elementRect.bottom + options.general.popupVerticalOffset;
const yAbove = elementRect.top - options.general.popupVerticalOffset;
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);
above = true;
}
} else {
y = yBelow;
}
this.container.classList.toggle('yomichan-float-full-width', options.general.popupDisplayMode === 'full-width');
this.container.classList.toggle('yomichan-float-above', above);
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';
}
async showOrphaned(elementRect, options) {
await this.show(elementRect, options);
this.invokeApi('orphaned');
}
hide() {
this.container.style.visibility = 'hidden';
}
isVisible() {
return this.injected && this.container.style.visibility !== 'hidden';
}
containsPoint(point) {
if (!this.isVisible()) {
return false;
}
const rect = this.container.getBoundingClientRect();
const contained =
point.x >= rect.left &&
point.y >= rect.top &&
point.x < rect.right &&
point.y < rect.bottom;
return contained;
}
async termsShow(elementRect, definitions, options, context) {
await this.show(elementRect, options);
this.invokeApi('termsShow', {definitions, options, context});
}
async kanjiShow(elementRect, definitions, options, context) {
await this.show(elementRect, options);
this.invokeApi('kanjiShow', {definitions, options, context});
}
clearAutoPlayTimer() {
if (this.injected) {
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);
}
}
}
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