注意: 保存後、変更を確認するにはブラウザーのキャッシュを消去する必要がある場合があります。
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/* ========================================
* 屋台比較
*
* ・最大4店舗
* ・localStorageにはstall_idだけ保存
* ・屋台名はCargo APIから取得
* ・画面下部に固定比較トレイを表示
* ======================================== */
mw.loader.using( [
'mediawiki.storage',
'mediawiki.api',
'mediawiki.util'
] ).then( function () {
'use strict';
const STORAGE_KEY = 'matsuriWikiCompareStalls';
const MAX_COMPARE = 4;
const api = new mw.Api();
/*
* このページを表示している間だけ使う
* 屋台名キャッシュ
*/
const stallNameCache = {};
/* =====================================
* localStorage
* ===================================== */
function getCompareStalls() {
const raw = mw.storage.get( STORAGE_KEY );
if ( !raw ) {
return [];
}
try {
const ids = JSON.parse( raw );
if ( !Array.isArray( ids ) ) {
return [];
}
/*
* 数字だけ許可
* localStorage改変対策
*/
return [ ...new Set(
ids
.map( String )
.filter( function ( id ) {
return /^\d+$/.test( id );
} )
) ].slice( 0, MAX_COMPARE );
} catch ( e ) {
return [];
}
}
function saveCompareStalls( ids ) {
mw.storage.set(
STORAGE_KEY,
JSON.stringify( ids )
);
}
/* =====================================
* Cargoから屋台名取得
* ===================================== */
function fetchStallNames( ids ) {
if ( ids.length === 0 ) {
return Promise.resolve( {} );
}
/*
* すでに取得済みのID
*/
const result = {};
const missingIds = [];
ids.forEach( function ( id ) {
if ( stallNameCache[ id ] ) {
result[ id ] =
stallNameCache[ id ];
} else {
missingIds.push( id );
}
} );
/*
* 全部キャッシュ済み
*/
if ( missingIds.length === 0 ) {
return Promise.resolve( result );
}
/*
* 数字だけにしてあるため
* IN (1,2,3) として安全にCargoへ渡す
*/
const where =
'stall_id IN (' +
missingIds.join( ',' ) +
')';
return api.get( {
action: 'cargoquery',
tables: 'Stalls',
fields:
'stall_id=stall_id,' +
'name=stall_name,' +
'_pageName=page_name',
where: where,
limit: MAX_COMPARE,
format: 'json'
} ).then( function ( data ) {
if (
!data ||
!Array.isArray( data.cargoquery )
) {
return result;
}
data.cargoquery.forEach( function ( item ) {
/*
* Cargo APIは通常
*
* {
* title: {
* stall_id: "...",
* stall_name: "..."
* }
* }
*
* の形式
*/
const row =
item.title || item;
if (
!row ||
row.stall_id === undefined
) {
return;
}
const id =
String( row.stall_id );
const info = {
id: id,
name:
row.stall_name ||
'屋台ID ' + id,
page:
row.page_name || ''
};
stallNameCache[ id ] = info;
result[ id ] = info;
} );
return result;
} ).catch( function () {
/*
* APIエラーでも
* 比較機能そのものは壊さない
*/
missingIds.forEach( function ( id ) {
result[ id ] = {
id: id,
name: '屋台ID ' + id,
page: ''
};
} );
return result;
} );
}
/* =====================================
* 詳細ページ側メッセージ
* ===================================== */
function showMessage(
control,
message,
isError
) {
const element =
control.querySelector(
'.stall-compare-message'
);
if ( !element ) {
return;
}
element.textContent =
message;
element.classList.toggle(
'stall-compare-message-error',
Boolean( isError )
);
}
/* =====================================
* 詳細ページ側button生成
* ===================================== */
function createCompareButtons() {
document
.querySelectorAll(
'.stall-compare-placeholder'
)
.forEach( function ( placeholder ) {
if (
placeholder.dataset.initialized ===
'1'
) {
return;
}
const prefix =
'stall-compare-placeholder-';
if (
!placeholder.id.startsWith(
prefix
)
) {
return;
}
const stallId =
placeholder.id.substring(
prefix.length
);
if (
!/^\d+$/.test( stallId )
) {
return;
}
const button =
document.createElement(
'button'
);
button.type =
'button';
button.className =
'stall-compare-button';
button.dataset.stallId =
stallId;
button.setAttribute(
'aria-pressed',
'false'
);
button.textContent =
'比較に追加';
placeholder.appendChild(
button
);
placeholder.dataset.initialized =
'1';
} );
}
/* =====================================
* 詳細ページ側button状態
* ===================================== */
function updateCompareButtons() {
const ids =
getCompareStalls();
document
.querySelectorAll(
'.stall-compare-button'
)
.forEach( function ( button ) {
const stallId =
String(
button.dataset.stallId || ''
);
const selected =
ids.includes( stallId );
if ( selected ) {
button.textContent =
'比較から外す';
button.classList.add(
'stall-compare-button-selected'
);
button.setAttribute(
'aria-pressed',
'true'
);
} else {
button.textContent =
'比較に追加';
button.classList.remove(
'stall-compare-button-selected'
);
button.setAttribute(
'aria-pressed',
'false'
);
}
} );
}
/* =====================================
* 固定比較トレイを生成
* ===================================== */
function createCompareTray() {
if (
document.getElementById(
'stall-compare-tray'
)
) {
return;
}
const tray =
document.createElement( 'div' );
tray.id =
'stall-compare-tray';
tray.className =
'stall-compare-tray';
tray.setAttribute(
'aria-live',
'polite'
);
/*
* ヘッダー
*/
const header =
document.createElement( 'div' );
header.className =
'stall-compare-tray-header';
const title =
document.createElement( 'strong' );
title.className =
'stall-compare-tray-title';
title.textContent =
'比較候補';
const count =
document.createElement( 'span' );
count.className =
'stall-compare-tray-count';
header.appendChild( title );
header.appendChild( count );
/*
* 屋台一覧
*/
const items =
document.createElement( 'div' );
items.className =
'stall-compare-tray-items';
/*
* アクション部分
*/
const actions =
document.createElement( 'div' );
actions.className =
'stall-compare-tray-actions';
const clearButton =
document.createElement( 'button' );
clearButton.type =
'button';
clearButton.className =
'stall-compare-clear';
clearButton.textContent =
'すべて外す';
const compareLink =
document.createElement( 'a' );
compareLink.className =
'stall-compare-open';
compareLink.href =
mw.util.getUrl( '屋台比較' );
compareLink.textContent =
'比較する';
actions.appendChild(
clearButton
);
actions.appendChild(
compareLink
);
tray.appendChild(
header
);
tray.appendChild(
items
);
tray.appendChild(
actions
);
document.body.appendChild(
tray
);
}
/* =====================================
* 固定比較トレイ更新
* ===================================== */
function updateCompareTray() {
createCompareTray();
const tray =
document.getElementById(
'stall-compare-tray'
);
if ( !tray ) {
return;
}
const ids =
getCompareStalls();
const count =
tray.querySelector(
'.stall-compare-tray-count'
);
const items =
tray.querySelector(
'.stall-compare-tray-items'
);
const compareLink =
tray.querySelector(
'.stall-compare-open'
);
if ( count ) {
count.textContent =
ids.length +
' / ' +
MAX_COMPARE;
}
/*
* 0件ならトレイ非表示
*/
if ( ids.length === 0 ) {
tray.classList.remove(
'stall-compare-tray-visible'
);
if ( items ) {
items.innerHTML = '';
}
return;
}
tray.classList.add(
'stall-compare-tray-visible'
);
/*
* 2件未満では比較ページを無効化
*/
if ( compareLink ) {
if ( ids.length >= 2 ) {
compareLink.classList.remove(
'stall-compare-open-disabled'
);
compareLink.setAttribute(
'aria-disabled',
'false'
);
} else {
compareLink.classList.add(
'stall-compare-open-disabled'
);
compareLink.setAttribute(
'aria-disabled',
'true'
);
}
}
if ( !items ) {
return;
}
/*
* 読み込み中
*/
items.textContent =
'屋台情報を読み込み中…';
fetchStallNames(
ids
).then( function ( stallInfo ) {
/*
* 更新待ち中に選択内容が
* 変わった場合も現在値を優先
*/
const currentIds =
getCompareStalls();
items.innerHTML =
'';
currentIds.forEach(
function ( id ) {
const info =
stallInfo[ id ] || {
id: id,
name:
'屋台ID ' + id,
page: ''
};
const item =
document.createElement(
'div'
);
item.className =
'stall-compare-tray-item';
/*
* 屋台名
*/
let nameElement;
if ( info.page ) {
nameElement =
document.createElement(
'a'
);
nameElement.href =
mw.util.getUrl(
info.page
);
} else {
nameElement =
document.createElement(
'span'
);
}
nameElement.className =
'stall-compare-tray-item-name';
nameElement.textContent =
info.name;
/*
* × ボタン
*/
const removeButton =
document.createElement(
'button'
);
removeButton.type =
'button';
removeButton.className =
'stall-compare-tray-remove';
removeButton.dataset.stallId =
id;
removeButton.setAttribute(
'aria-label',
info.name +
'を比較候補から外す'
);
removeButton.textContent =
'×';
item.appendChild(
nameElement
);
item.appendChild(
removeButton
);
items.appendChild(
item
);
}
);
} );
}
/* =====================================
* 詳細ページ比較button
* ===================================== */
document.addEventListener(
'click',
function ( event ) {
const button =
event.target.closest(
'.stall-compare-button'
);
if ( !button ) {
return;
}
event.preventDefault();
const stallId =
String(
button.dataset.stallId || ''
);
if (
!/^\d+$/.test( stallId )
) {
return;
}
const control =
button.closest(
'.stall-compare-control'
);
let ids =
getCompareStalls();
const index =
ids.indexOf(
stallId
);
/*
* すでに選択済み
* → 外す
*/
if ( index !== -1 ) {
ids.splice(
index,
1
);
saveCompareStalls(
ids
);
updateCompareButtons();
updateCompareTray();
if ( control ) {
showMessage(
control,
'比較候補から外しました。',
false
);
}
return;
}
/*
* 4件上限
*/
if (
ids.length >=
MAX_COMPARE
) {
if ( control ) {
showMessage(
control,
'比較できる屋台は最大4店舗です。',
true
);
}
return;
}
ids.push(
stallId
);
saveCompareStalls(
ids
);
updateCompareButtons();
updateCompareTray();
if ( control ) {
showMessage(
control,
'比較候補に追加しました（' +
ids.length +
'/4）。',
false
);
}
}
);
/* =====================================
* トレイ × button
* ===================================== */
document.addEventListener(
'click',
function ( event ) {
const button =
event.target.closest(
'.stall-compare-tray-remove'
);
if ( !button ) {
return;
}
event.preventDefault();
const stallId =
String(
button.dataset.stallId || ''
);
let ids =
getCompareStalls();
ids =
ids.filter(
function ( id ) {
return id !== stallId;
}
);
saveCompareStalls(
ids
);
updateCompareButtons();
updateCompareTray();
}
);
/* =====================================
* 「すべて外す」
* ===================================== */
document.addEventListener(
'click',
function ( event ) {
const button =
event.target.closest(
'.stall-compare-clear'
);
if ( !button ) {
return;
}
event.preventDefault();
saveCompareStalls(
[]
);
updateCompareButtons();
updateCompareTray();
}
);
/* =====================================
* 1件時の「比較する」クリック防止
* ===================================== */
document.addEventListener(
'click',
function ( event ) {
const link =
event.target.closest(
'.stall-compare-open-disabled'
);
if ( !link ) {
return;
}
event.preventDefault();
}
);
/* =====================================
* 初期化
* ===================================== */
function initStallCompare() {
createCompareButtons();
createCompareTray();
updateCompareButtons();
updateCompareTray();
}
initStallCompare();
mw.hook(
'wikipage.content'
).add(
function () {
initStallCompare();
}
);
} );