yomichan/ext/js/settings/popup-preview-frame.js

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/*
* Copyright (C) 2019-2021 Yomichan Authors
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*
* 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
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/* global
* Frontend
* TextSourceRange
* api
* wanakana
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*/
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class PopupPreviewFrame {
constructor(tabId, frameId, popupFactory, hotkeyHandler) {
this._tabId = tabId;
this._frameId = frameId;
this._popupFactory = popupFactory;
this._hotkeyHandler = hotkeyHandler;
this._frontend = null;
this._apiOptionsGetOld = null;
this._popupShown = false;
this._themeChangeTimeout = null;
this._textSource = null;
this._optionsContext = null;
this._exampleText = null;
this._exampleTextInput = null;
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this._targetOrigin = chrome.runtime.getURL('/').replace(/\/$/, '');
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this._windowMessageHandlers = new Map([
['setText', this._onSetText.bind(this)],
['setCustomCss', this._setCustomCss.bind(this)],
['setCustomOuterCss', this._setCustomOuterCss.bind(this)],
['updateOptionsContext', this._updateOptionsContext.bind(this)]
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]);
}
async prepare() {
this._exampleText = document.querySelector('#example-text');
this._exampleTextInput = document.querySelector('#example-text-input');
if (this._exampleTextInput !== null && typeof wanakana !== 'undefined') {
wanakana.bind(this._exampleTextInput);
}
window.addEventListener('message', this._onMessage.bind(this), false);
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// Setup events
document.querySelector('#theme-dark-checkbox').addEventListener('change', this._onThemeDarkCheckboxChanged.bind(this), false);
this._exampleText.addEventListener('click', this._onExampleTextClick.bind(this), false);
this._exampleTextInput.addEventListener('blur', this._onExampleTextInputBlur.bind(this), false);
this._exampleTextInput.addEventListener('input', this._onExampleTextInputInput.bind(this), false);
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// Overwrite API functions
this._apiOptionsGetOld = api.optionsGet.bind(api);
api.optionsGet = this._apiOptionsGet.bind(this);
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// Overwrite frontend
this._frontend = new Frontend({
tabId: this._tabId,
frameId: this._frameId,
popupFactory: this._popupFactory,
depth: 0,
parentPopupId: null,
parentFrameId: null,
useProxyPopup: false,
canUseWindowPopup: false,
pageType: 'web',
allowRootFramePopupProxy: false,
childrenSupported: false,
hotkeyHandler: this._hotkeyHandler
});
this._frontend.setOptionsContextOverride(this._optionsContext);
await this._frontend.prepare();
this._frontend.setDisabledOverride(true);
this._frontend.canClearSelection = false;
this._frontend.popup.on('customOuterCssChanged', this._onCustomOuterCssChanged.bind(this));
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// Update search
this._updateSearch();
}
// Private
async _apiOptionsGet(...args) {
const options = await this._apiOptionsGetOld(...args);
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options.general.enable = true;
options.general.debugInfo = false;
options.general.popupWidth = 400;
options.general.popupHeight = 250;
options.general.popupHorizontalOffset = 0;
options.general.popupVerticalOffset = 10;
options.general.popupHorizontalOffset2 = 10;
options.general.popupVerticalOffset2 = 0;
options.general.popupHorizontalTextPosition = 'below';
options.general.popupVerticalTextPosition = 'before';
options.scanning.selectText = false;
return options;
}
_onCustomOuterCssChanged({node, inShadow}) {
if (node === null || inShadow) { return; }
const node2 = document.querySelector('#popup-outer-css');
if (node2 === null) { return; }
// This simulates the stylesheet priorities when injecting using the web extension API.
node2.parentNode.insertBefore(node, node2);
}
_onMessage(e) {
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if (e.origin !== this._targetOrigin) { return; }
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const {action, params} = e.data;
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const handler = this._windowMessageHandlers.get(action);
if (typeof handler !== 'function') { return; }
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handler(params);
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}
_onThemeDarkCheckboxChanged(e) {
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document.documentElement.classList.toggle('dark', e.target.checked);
if (this._themeChangeTimeout !== null) {
clearTimeout(this._themeChangeTimeout);
}
this._themeChangeTimeout = setTimeout(() => {
this._themeChangeTimeout = null;
const popup = this._frontend.popup;
if (popup === null) { return; }
popup.updateTheme();
}, 300);
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}
_onExampleTextClick() {
if (this._exampleTextInput === null) { return; }
const visible = this._exampleTextInput.hidden;
this._exampleTextInput.hidden = !visible;
if (!visible) { return; }
this._exampleTextInput.focus();
this._exampleTextInput.select();
}
_onExampleTextInputBlur() {
if (this._exampleTextInput === null) { return; }
this._exampleTextInput.hidden = true;
}
_onExampleTextInputInput(e) {
this._setText(e.currentTarget.value);
}
_onSetText({text}) {
this._setText(text, true);
}
_setText(text, setInput) {
if (setInput && this._exampleTextInput !== null) {
this._exampleTextInput.value = text;
}
if (this._exampleText === null) { return; }
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this._exampleText.textContent = text;
if (this._frontend === null) { return; }
this._updateSearch();
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}
_setInfoVisible(visible) {
const node = document.querySelector('.placeholder-info');
if (node === null) { return; }
node.classList.toggle('placeholder-info-visible', visible);
}
_setCustomCss({css}) {
if (this._frontend === null) { return; }
const popup = this._frontend.popup;
if (popup === null) { return; }
popup.setCustomCss(css);
}
_setCustomOuterCss({css}) {
if (this._frontend === null) { return; }
const popup = this._frontend.popup;
if (popup === null) { return; }
popup.setCustomOuterCss(css, false);
}
async _updateOptionsContext({optionsContext}) {
this._optionsContext = optionsContext;
if (this._frontend === null) { return; }
this._frontend.setOptionsContextOverride(optionsContext);
await this._frontend.updateOptions();
await this._updateSearch();
}
async _updateSearch() {
if (this._exampleText === null) { return; }
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const textNode = this._exampleText.firstChild;
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if (textNode === null) { return; }
const range = document.createRange();
range.selectNodeContents(textNode);
const source = new TextSourceRange(range, range.toString(), null, null);
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try {
await this._frontend.setTextSource(source);
} finally {
source.cleanup();
}
this._textSource = source;
await this._frontend.showContentCompleted();
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const popup = this._frontend.popup;
if (popup !== null && popup.isVisibleSync()) {
this._popupShown = true;
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}
this._setInfoVisible(!this._popupShown);
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}
}