yomichan/ext/bg/js/search.js

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JavaScript
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/*
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* Copyright (C) 2016-2017 Alex Yatskov <alex@foosoft.net>
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* 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/>.
*/
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class DisplaySearch extends Display {
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constructor() {
super(document.querySelector('#spinner'), document.querySelector('#content'));
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this.optionsContext = {
depth: 0,
url: window.location.href
};
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this.search = document.querySelector('#search');
this.query = document.querySelector('#query');
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this.intro = document.querySelector('#intro');
this.introVisible = true;
this.introAnimationTimer = null;
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}
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static create() {
const instance = new DisplaySearch();
instance.prepare();
return instance;
}
async prepare() {
try {
await this.initialize();
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if (this.search !== null) {
this.search.addEventListener('click', (e) => this.onSearch(e), false);
}
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if (this.query !== null) {
this.query.addEventListener('input', () => this.onSearchInput(), false);
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const query = DisplaySearch.getSearchQueryFromLocation(window.location.href);
if (query !== null) {
this.query.value = window.wanakana.toKana(query);
this.onSearchQueryUpdated(query, false);
}
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window.wanakana.bind(this.query);
}
this.updateSearchButton();
} catch (e) {
this.onError(e);
}
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}
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onError(error) {
logError(error, true);
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}
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onSearchClear() {
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if (this.query === null) {
return;
}
this.query.focus();
this.query.select();
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}
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onSearchInput() {
this.updateSearchButton();
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}
onSearch(e) {
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if (this.query === null) {
return;
}
e.preventDefault();
const query = this.query.value;
const queryString = query.length > 0 ? `?query=${encodeURIComponent(query)}` : '';
window.history.replaceState(null, '', `${window.location.pathname}${queryString}`);
this.onSearchQueryUpdated(query, true);
}
async onSearchQueryUpdated(query, animate) {
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try {
const valid = (query.length > 0);
this.setIntroVisible(!valid, animate);
this.updateSearchButton();
if (valid) {
const {definitions} = await apiTermsFind(query, this.optionsContext);
this.termsShow(definitions, {
focus: false,
sentence: null,
url: window.location.href
});
} else {
this.container.textContent = '';
}
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} catch (e) {
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this.onError(e);
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}
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}
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getOptionsContext() {
return this.optionsContext;
}
setIntroVisible(visible, animate) {
if (this.introVisible === visible) {
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return;
}
this.introVisible = visible;
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if (this.intro === 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.intro.style.transition = '';
this.intro.style.height = '';
const size = this.intro.getBoundingClientRect();
this.intro.style.height = `0px`;
this.intro.style.transition = `height ${duration}s ease-in-out 0s`;
window.getComputedStyle(this.intro).getPropertyValue('height'); // Commits height so next line can start animation
this.intro.style.height = `${size.height}px`;
this.introAnimationTimer = setTimeout(() => {
this.intro.style.height = '';
this.introAnimationTimer = null;
}, duration * 1000);
} else {
this.intro.style.transition = '';
this.intro.style.height = '';
}
}
hideIntro(animate) {
if (animate) {
const duration = 0.4;
const size = this.intro.getBoundingClientRect();
this.intro.style.height = `${size.height}px`;
this.intro.style.transition = `height ${duration}s ease-in-out 0s`;
window.getComputedStyle(this.intro).getPropertyValue('height'); // Commits height so next line can start animation
} else {
this.intro.style.transition = '';
}
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this.intro.style.height = '0';
}
updateSearchButton() {
this.search.disabled = this.introVisible && (this.query === null || this.query.value.length === 0);
}
static getSearchQueryFromLocation(url) {
let match = /^[^\?#]*\?(?:[^&#]*&)?query=([^&#]*)/.exec(url);
return match !== null ? decodeURIComponent(match[1]) : null;
}
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}
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window.yomichan_search = DisplaySearch.create();