yomichan/ext/bg/js/search.js
toasted-nutbread b6038c87b6
Improve document focus control (#1167)
* Improve styles for #content-scroll-focus

* Create new class to manage and control document focus

* Use new focus class

* Add a check to prevent redundant .blur calls
2020-12-28 17:41:59 -05:00

380 lines
12 KiB
JavaScript

/*
* Copyright (C) 2016-2020 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
* Display
* DocumentUtil
* api
* wanakana
*/
class DisplaySearch extends Display {
constructor(japaneseUtil, documentFocusController) {
super('search', japaneseUtil, documentFocusController);
this._searchButton = document.querySelector('#search-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._wanakanaEnabled = false;
this._isPrepared = false;
this._introVisible = true;
this._introAnimationTimer = null;
this._clipboardMonitorEnabled = false;
this._clipboardMonitor = new ClipboardMonitor({
japaneseUtil,
clipboardReader: {
getText: async () => (await api.clipboardGet())
}
});
this._onKeyDownIgnoreKeys = new Map([
['ANY_MOD', new Set([
'Tab', 'ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight', 'PageDown', 'PageUp', 'Home', 'End', 'Enter', 'Escape',
'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10',
'F11', 'F12', 'F13', 'F14', 'F15', 'F16', 'F17', 'F18', 'F19', 'F20',
'F21', 'F22', 'F23', 'F24'
])],
['Control', new Set(['C', 'A', 'Z', 'Y', 'X', 'F', 'G'])],
['Meta', new Set(['C', 'A', 'Z', 'Y', 'X', 'F', 'G'])],
['OS', new Set()],
['Alt', new Set()],
['AltGraph', new Set()],
['Shift', new Set()]
]);
this.autoPlayAudioDelay = 0;
}
async prepare() {
await super.prepare();
await this.updateOptions();
yomichan.on('optionsUpdated', this._onOptionsUpdated.bind(this));
this.on('contentUpdating', this._onContentUpdating.bind(this));
this.on('modeChange', this._onModeChange.bind(this));
this.registerMessageHandlers([
['updateSearchQuery', {async: false, handler: this._onExternalSearchUpdate.bind(this)}]
]);
this.queryParserVisible = true;
this.setHistorySettings({useBrowserHistory: true});
const enableWanakana = !!this.getOptions().general.enableWanakana;
this._wanakanaEnableCheckbox.checked = enableWanakana;
this._setWanakanaEnabled(enableWanakana);
this._searchButton.addEventListener('click', this._onSearch.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._onModeChange();
this.initializeState();
this._isPrepared = true;
}
onEscape() {
if (this._queryInput === null) {
return;
}
this._queryInput.focus();
this._queryInput.select();
}
onKeyDown(e) {
const key = DocumentUtil.getKeyFromEvent(e);
const ignoreKeys = this._onKeyDownIgnoreKeys;
const activeModifierMap = new Map([
['Control', e.ctrlKey],
['Meta', e.metaKey],
['Shift', e.shiftKey],
['Alt', e.altKey],
['ANY_MOD', true]
]);
let preventFocus = false;
for (const [modifier, keys] of ignoreKeys.entries()) {
const modifierActive = activeModifierMap.get(modifier);
if (key === modifier || (modifierActive && keys.has(key))) {
preventFocus = true;
break;
}
}
if (!super.onKeyDown(e) && !preventFocus && document.activeElement !== this._queryInput) {
this._queryInput.focus({preventScroll: true});
}
}
postProcessQuery(query) {
if (this._wanakanaEnabled) {
try {
query = this._japaneseUtil.convertToKana(query);
} catch (e) {
// NOP
}
}
return query;
}
// Private
async _onOptionsUpdated() {
await this.updateOptions();
const query = this._queryInput.value;
if (query) {
this.searchLast();
}
}
_onContentUpdating({type, content, source}) {
let animate = false;
let valid = false;
switch (type) {
case 'terms':
case 'kanji':
animate = !!content.animate;
valid = content.definitions.length > 0;
this.blurElement(this._queryInput);
break;
case 'clear':
valid = false;
animate = true;
source = '';
break;
}
if (typeof source !== 'string') { source = ''; }
this._queryInput.value = source;
this._updateSearchHeight();
this._setIntroVisible(!valid, animate);
}
_onSearchInput() {
this._updateSearchHeight();
}
_onSearchKeydown(e) {
if (e.code !== 'Enter' || e.shiftKey) { return; }
// Search
e.preventDefault();
e.stopImmediatePropagation();
this.blurElement(e.currentTarget);
this._search(true, true);
}
_onSearch(e) {
e.preventDefault();
this._search(true, true);
}
_onCopy() {
// ignore copy from search page
this._clipboardMonitor.setPreviousText(window.getSelection().toString().trim());
}
_onExternalSearchUpdate({text, animate=true}) {
const {general: {maximumClipboardSearchLength}} = this.getOptions();
if (text.length > maximumClipboardSearchLength) {
text = text.substring(0, maximumClipboardSearchLength);
}
this._queryInput.value = text;
this._search(animate, false);
}
_onWanakanaEnableChange(e) {
const value = e.target.checked;
this._setWanakanaEnabled(value);
api.modifySettings([{
action: 'set',
path: 'general.enableWanakana',
value,
scope: 'profile',
optionsContext: this.getOptionsContext()
}], 'search');
}
_onClipboardMonitorEnableChange(e) {
const enabled = e.target.checked;
this._setClipboardMonitorEnabled(enabled);
}
_onModeChange() {
let mode = this.mode;
if (mode === null) { mode = ''; }
document.documentElement.dataset.searchMode = mode;
this._updateClipboardMonitorEnabled();
}
_setWanakanaEnabled(enabled) {
const input = this._queryInput;
this._queryInputEvents.removeAllEventListeners();
this._queryInputEvents.addEventListener(input, 'keydown', this._onSearchKeydown.bind(this), false);
if (this._wanakanaEnabled !== enabled) {
this._wanakanaEnabled = enabled;
if (enabled) {
wanakana.bind(input);
} else {
wanakana.unbind(input);
}
}
this._queryInputEvents.addEventListener(input, 'input', this._onSearchInput.bind(this), false);
}
_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 ${duration}s ease-in-out 0s`;
window.getComputedStyle(this._introElement).getPropertyValue('height'); // Commits height so next line can start animation
} else {
this._introElement.style.transition = '';
}
this._introElement.style.height = '0';
}
async _setClipboardMonitorEnabled(value) {
let modify = true;
if (value) {
value = await this._requestPermissions(['clipboardRead']);
modify = value;
}
this._clipboardMonitorEnabled = value;
this._updateClipboardMonitorEnabled();
if (!modify) { return; }
await api.modifySettings([{
action: 'set',
path: 'general.enableClipboardMonitor',
value,
scope: 'profile',
optionsContext: this.getOptionsContext()
}], 'search');
}
_updateClipboardMonitorEnabled() {
const mode = this.mode;
const enabled = this._clipboardMonitorEnabled;
this._clipboardMonitorEnableCheckbox.checked = enabled;
if (enabled && mode !== 'popup') {
this._clipboardMonitor.start();
} else {
this._clipboardMonitor.stop();
}
}
_requestPermissions(permissions) {
return new Promise((resolve) => {
chrome.permissions.request(
{permissions},
(granted) => {
const e = chrome.runtime.lastError;
resolve(!e && granted);
}
);
});
}
_search(animate, history) {
const query = this._queryInput.value;
const details = {
focus: false,
history,
params: {
query
},
state: {
focusEntry: 0,
sentence: {text: query, offset: 0},
url: window.location.href
},
content: {
definitions: null,
animate
}
};
this.setContent(details);
}
_updateSearchHeight() {
const node = this._queryInput;
const {scrollHeight} = node;
const currentHeight = node.getBoundingClientRect().height;
if (scrollHeight >= currentHeight - 1) {
node.style.height = `${scrollHeight}px`;
}
}
}