yomichan/ext/js/display/search-display-controller.js
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JavaScript

/*
* Copyright (C) 2016-2022 Yomichan Authors
*
* 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 <https://www.gnu.org/licenses/>.
*/
/* global
* ClipboardMonitor
* wanakana
*/
class SearchDisplayController {
constructor(tabId, frameId, display, displayAudio, japaneseUtil, searchPersistentStateController) {
this._tabId = tabId;
this._frameId = frameId;
this._display = display;
this._displayAudio = displayAudio;
this._searchPersistentStateController = searchPersistentStateController;
this._searchButton = document.querySelector('#search-button');
this._searchBackButton = document.querySelector('#search-back-button');
this._queryInput = document.querySelector('#search-textbox');
this._introElement = document.querySelector('#intro');
this._clipboardMonitorEnableCheckbox = document.querySelector('#clipboard-monitor-enable');
this._wanakanaEnableCheckbox = document.querySelector('#wanakana-enable');
this._queryInputEvents = new EventListenerCollection();
this._queryInputEventsSetup = false;
this._wanakanaEnabled = false;
this._wanakanaBound = false;
this._introVisible = true;
this._introAnimationTimer = null;
this._clipboardMonitorEnabled = false;
this._clipboardMonitor = new ClipboardMonitor({
japaneseUtil,
clipboardReader: {
getText: async () => (await yomichan.api.clipboardGet())
}
});
this._messageHandlers = new Map();
}
async prepare() {
await this._display.updateOptions();
this._searchPersistentStateController.on('modeChange', this._onModeChange.bind(this));
chrome.runtime.onMessage.addListener(this._onMessage.bind(this));
yomichan.on('optionsUpdated', this._onOptionsUpdated.bind(this));
this._display.on('optionsUpdated', this._onDisplayOptionsUpdated.bind(this));
this._display.on('contentUpdateStart', this._onContentUpdateStart.bind(this));
this._display.hotkeyHandler.registerActions([
['focusSearchBox', this._onActionFocusSearchBox.bind(this)]
]);
this._registerMessageHandlers([
['SearchDisplayController.getMode', {async: false, handler: this._onMessageGetMode.bind(this)}],
['SearchDisplayController.setMode', {async: false, handler: this._onMessageSetMode.bind(this)}],
['SearchDisplayController.updateSearchQuery', {async: false, handler: this._onExternalSearchUpdate.bind(this)}]
]);
this._updateClipboardMonitorEnabled();
this._displayAudio.autoPlayAudioDelay = 0;
this._display.queryParserVisible = true;
this._display.setHistorySettings({useBrowserHistory: true});
this._searchButton.addEventListener('click', this._onSearch.bind(this), false);
this._searchBackButton.addEventListener('click', this._onSearchBackButtonClick.bind(this), false);
this._wanakanaEnableCheckbox.addEventListener('change', this._onWanakanaEnableChange.bind(this));
window.addEventListener('copy', this._onCopy.bind(this));
this._clipboardMonitor.on('change', this._onExternalSearchUpdate.bind(this));
this._clipboardMonitorEnableCheckbox.addEventListener('change', this._onClipboardMonitorEnableChange.bind(this));
this._display.hotkeyHandler.on('keydownNonHotkey', this._onKeyDown.bind(this));
this._onDisplayOptionsUpdated({options: this._display.getOptions()});
}
setMode(mode) {
this._setMode(mode, true);
}
// Actions
_onActionFocusSearchBox() {
if (this._queryInput === null) { return; }
this._queryInput.focus();
this._queryInput.select();
}
// Messages
_onMessageSetMode({mode}) {
this._searchPersistentStateController.mode = mode;
}
_onMessageGetMode() {
return this._searchPersistentStateController.mode;
}
// Private
_onMessage({action, params}, sender, callback) {
const messageHandler = this._messageHandlers.get(action);
if (typeof messageHandler === 'undefined') { return false; }
return invokeMessageHandler(messageHandler, params, callback, sender);
}
_onKeyDown(e) {
const {activeElement} = document;
if (
activeElement !== this._queryInput &&
!this._isElementInput(activeElement) &&
!e.ctrlKey &&
!e.metaKey &&
!e.altKey &&
e.key.length === 1 &&
e.key !== ' '
) {
this._queryInput.focus({preventScroll: true});
}
}
async _onOptionsUpdated() {
await this._display.updateOptions();
const query = this._queryInput.value;
if (query) {
this._display.searchLast();
}
}
_onDisplayOptionsUpdated({options}) {
this._clipboardMonitorEnabled = options.clipboard.enableSearchPageMonitor;
this._updateClipboardMonitorEnabled();
const enableWanakana = !!this._display.getOptions().general.enableWanakana;
this._wanakanaEnableCheckbox.checked = enableWanakana;
this._setWanakanaEnabled(enableWanakana);
}
_onContentUpdateStart({type, query}) {
let animate = false;
let valid = false;
let showBackButton = false;
switch (type) {
case 'terms':
case 'kanji':
{
const {content, state} = this._display.history;
animate = (typeof content === 'object' && content !== null && content.animate === true);
showBackButton = (typeof state === 'object' && state !== null && state.cause === 'queryParser');
valid = (typeof query === 'string' && query.length > 0);
this._display.blurElement(this._queryInput);
}
break;
case 'clear':
valid = false;
animate = true;
query = '';
break;
}
if (typeof query !== 'string') { query = ''; }
this._searchBackButton.hidden = !showBackButton;
if (this._queryInput.value !== query) {
this._queryInput.value = query;
this._updateSearchHeight(true);
}
this._setIntroVisible(!valid, animate);
}
_onSearchInput() {
this._updateSearchHeight(false);
}
_onSearchKeydown(e) {
if (e.isComposing) { return; }
const {code} = e;
if (!((code === 'Enter' || code === 'NumpadEnter') && !e.shiftKey)) { return; }
// Search
e.preventDefault();
e.stopImmediatePropagation();
this._display.blurElement(e.currentTarget);
this._search(true, 'new', true, null);
}
_onSearch(e) {
e.preventDefault();
this._search(true, 'new', true, null);
}
_onSearchBackButtonClick() {
this._display.history.back();
}
_onCopy() {
// ignore copy from search page
this._clipboardMonitor.setPreviousText(window.getSelection().toString().trim());
}
_onExternalSearchUpdate({text, animate=true}) {
const {clipboard: {autoSearchContent, maximumSearchLength}} = this._display.getOptions();
if (text.length > maximumSearchLength) {
text = text.substring(0, maximumSearchLength);
}
this._queryInput.value = text;
this._updateSearchHeight(true);
this._search(animate, 'clear', autoSearchContent, ['clipboard']);
}
_onWanakanaEnableChange(e) {
const value = e.target.checked;
this._setWanakanaEnabled(value);
yomichan.api.modifySettings([{
action: 'set',
path: 'general.enableWanakana',
value,
scope: 'profile',
optionsContext: this._display.getOptionsContext()
}], 'search');
}
_onClipboardMonitorEnableChange(e) {
const enabled = e.target.checked;
this._setClipboardMonitorEnabled(enabled);
}
_onModeChange() {
this._updateClipboardMonitorEnabled();
}
_setWanakanaEnabled(enabled) {
if (this._queryInputEventsSetup && this._wanakanaEnabled === enabled) { return; }
const input = this._queryInput;
this._queryInputEvents.removeAllEventListeners();
this._queryInputEvents.addEventListener(input, 'keydown', this._onSearchKeydown.bind(this), false);
this._wanakanaEnabled = enabled;
if (enabled) {
if (!this._wanakanaBound) {
wanakana.bind(input);
this._wanakanaBound = true;
}
} else {
if (this._wanakanaBound) {
wanakana.unbind(input);
this._wanakanaBound = false;
}
}
this._queryInputEvents.addEventListener(input, 'input', this._onSearchInput.bind(this), false);
this._queryInputEventsSetup = true;
}
_setIntroVisible(visible, animate) {
if (this._introVisible === visible) {
return;
}
this._introVisible = visible;
if (this._introElement === null) {
return;
}
if (this._introAnimationTimer !== null) {
clearTimeout(this._introAnimationTimer);
this._introAnimationTimer = null;
}
if (visible) {
this._showIntro(animate);
} else {
this._hideIntro(animate);
}
}
_showIntro(animate) {
if (animate) {
const duration = 0.4;
this._introElement.style.transition = '';
this._introElement.style.height = '';
const size = this._introElement.getBoundingClientRect();
this._introElement.style.height = '0px';
this._introElement.style.transition = `height ${duration}s ease-in-out 0s`;
window.getComputedStyle(this._introElement).getPropertyValue('height'); // Commits height so next line can start animation
this._introElement.style.height = `${size.height}px`;
this._introAnimationTimer = setTimeout(() => {
this._introElement.style.height = '';
this._introAnimationTimer = null;
}, duration * 1000);
} else {
this._introElement.style.transition = '';
this._introElement.style.height = '';
}
}
_hideIntro(animate) {
if (animate) {
const duration = 0.4;
const size = this._introElement.getBoundingClientRect();
this._introElement.style.height = `${size.height}px`;
this._introElement.style.transition = `height ${duration}s ease-in-out 0s`;
window.getComputedStyle(this._introElement).getPropertyValue('height'); // Commits height so next line can start animation
} else {
this._introElement.style.transition = '';
}
this._introElement.style.height = '0';
}
async _setClipboardMonitorEnabled(value) {
let modify = true;
if (value) {
value = await this._requestPermissions(['clipboardRead']);
modify = value;
}
this._clipboardMonitorEnabled = value;
this._updateClipboardMonitorEnabled();
if (!modify) { return; }
await yomichan.api.modifySettings([{
action: 'set',
path: 'clipboard.enableSearchPageMonitor',
value,
scope: 'profile',
optionsContext: this._display.getOptionsContext()
}], 'search');
}
_updateClipboardMonitorEnabled() {
const enabled = this._clipboardMonitorEnabled;
this._clipboardMonitorEnableCheckbox.checked = enabled;
if (enabled && this._canEnableClipboardMonitor()) {
this._clipboardMonitor.start();
} else {
this._clipboardMonitor.stop();
}
}
_canEnableClipboardMonitor() {
switch (this._searchPersistentStateController.mode) {
case 'popup':
case 'action-popup':
return false;
default:
return true;
}
}
_requestPermissions(permissions) {
return new Promise((resolve) => {
chrome.permissions.request(
{permissions},
(granted) => {
const e = chrome.runtime.lastError;
resolve(!e && granted);
}
);
});
}
_search(animate, historyMode, lookup, flags) {
const query = this._queryInput.value;
const depth = this._display.depth;
const url = window.location.href;
const documentTitle = document.title;
const optionsContext = {depth, url};
if (flags !== null) {
optionsContext.flags = flags;
}
const details = {
focus: false,
historyMode,
params: {
query
},
state: {
focusEntry: 0,
optionsContext,
url,
sentence: {text: query, offset: 0},
documentTitle
},
content: {
dictionaryEntries: null,
animate,
contentOrigin: {
tabId: this._tabId,
frameId: this._frameId
}
}
};
if (!lookup) { details.params.lookup = 'false'; }
this._display.setContent(details);
}
_updateSearchHeight(shrink) {
const node = this._queryInput;
if (shrink) {
node.style.height = '0';
}
const {scrollHeight} = node;
const currentHeight = node.getBoundingClientRect().height;
if (shrink || scrollHeight >= currentHeight - 1) {
node.style.height = `${scrollHeight}px`;
}
}
_registerMessageHandlers(handlers) {
for (const [name, handlerInfo] of handlers) {
this._messageHandlers.set(name, handlerInfo);
}
}
_isElementInput(element) {
if (element === null) { return false; }
switch (element.tagName.toLowerCase()) {
case 'input':
case 'textarea':
case 'button':
case 'select':
return true;
}
if (element.isContentEditable) { return true; }
return false;
}
}