MediaWiki:Gadget-ViewerMode.js：修订间差异

2026年3月12日 (四) 13:26的最新版本

/**
 * ViewerMode gadget — simulates a genuine visitor's view as closely as possible.
 * In reader view: hides ALL editor UI (edit buttons, user menu, custom admin buttons).
 * An "退出阅读视图" escape pill is fixed bottom-left so you can always get back.
 */
( function () {
    'use strict';

    if ( mw.user.isAnon() ) { return; }

    var STORAGE_KEY = 'mw-viewer-mode';
    var active      = localStorage.getItem( STORAGE_KEY ) === '1';
    var btn         = null;   // header pill
    var exitBtn     = null;   // escape pill (bottom-left, only visible in reader view)

    if ( active ) { document.documentElement.classList.add( 'viewer-mode' ); }

    function setActive( state ) {
        active = state;
        localStorage.setItem( STORAGE_KEY, active ? '1' : '0' );
        document.documentElement.classList.toggle( 'viewer-mode', active );
        updateUI();
    }

    function toggle() { setActive( !active ); }

    function updateUI() {
        if ( btn ) {
            if ( active ) {
                btn.textContent = '📖 阅读视图';
                btn.classList.add( 'vm-active' );
            } else {
                btn.textContent = '📖 阅读视图';
                btn.classList.remove( 'vm-active' );
            }
        }
    }

    $( function () {
        /* ── Fix missing icon on "My blog" ─────────────────────── */
        var blogLink = document.querySelector( '#pt-simpleblog_myblog a' );
        if ( blogLink && !blogLink.querySelector( '.vector-icon' ) ) {
            var blogIcon = document.createElement( 'span' );
            blogIcon.className = 'vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article';
            blogLink.insertBefore( blogIcon, blogLink.firstChild );
        }

        /* ── Header toggle pill ─────────────────────────────────── */
        btn = document.createElement( 'button' );
        btn.id        = 'vm-toggle';
        btn.className = 'vm-toggle';
        btn.textContent = '📖 阅读视图';
        btn.title     = '模拟访客视图（隐藏所有编辑工具）';
        btn.addEventListener( 'click', toggle );
        if ( active ) { btn.classList.add( 'vm-active' ); }

        var target = document.querySelector( '.vector-user-links-main' ) ||
                     document.querySelector( '.vector-user-links' );
        if ( target ) { target.insertBefore( btn, target.firstChild ); }

        /* ── Escape pill (bottom-left, only shown in reader view) ─ */
        exitBtn = document.createElement( 'button' );
        exitBtn.id        = 'vm-exit';
        exitBtn.className = 'vm-exit';
        exitBtn.innerHTML = '✏️ 退出阅读视图';
        exitBtn.title     = '切换回编辑视图';
        exitBtn.addEventListener( 'click', toggle );
        document.body.appendChild( exitBtn );
    } );
}() );