Globales Barrierefreiheitsmenü ergänzen

2026-07-12 23:05:48 +02:00
parent 0f2c9eae86
commit 018efdee0f
6 changed files with 51 additions and 7 deletions
@@ -0,0 +1,10 @@
+(function(){'use strict';var KEY='mf-accessibility',levels=[100,115,130,150],defaults={font:100,readable:false,contrast:false,color:false,mono:false,links:false,motion:true,cursor:false};
+function load(){try{return Object.assign({},defaults,JSON.parse(localStorage.getItem(KEY)||'{}'));}catch(e){return Object.assign({},defaults);}}var state=load();
+function apply(){var h=document.documentElement;h.setAttribute('data-mf-font',String(state.font));h.setAttribute('data-mf-readable',state.readable);h.setAttribute('data-mf-contrast',state.contrast);h.setAttribute('data-mf-color',state.color?'safe':'standard');h.setAttribute('data-mf-mono',state.mono);h.setAttribute('data-mf-links',state.links);h.setAttribute('data-mf-motion',state.motion);h.setAttribute('data-mf-cursor',state.cursor);try{localStorage.setItem(KEY,JSON.stringify(state));}catch(e){}}
+apply();
+function button(id,icon,label,detail){return '<button type="button" class="mf-a11y-option" data-a11y="'+id+'"><strong aria-hidden="true">'+icon+'</strong><span>'+label+'</span>'+(detail?'<small>'+detail+'</small>':'')+'</button>';}
+function init(){if(document.querySelector('.mf-a11y-trigger'))return;var trigger=document.createElement('button');trigger.type='button';trigger.className='mf-a11y-trigger';trigger.setAttribute('aria-label','Barrierefreiheit öffnen');trigger.setAttribute('aria-expanded','false');trigger.setAttribute('aria-controls','mf-a11y-panel');trigger.innerHTML='<svg viewBox="0 0 32 32" fill="none" stroke="currentColor" stroke-width="2.5" aria-hidden="true"><circle cx="18" cy="5" r="3" fill="currentColor"/><path d="M13 11l5-2 5 4m-7-2-2 7-6 1m8-4 6 2 3 7M13 18a7 7 0 1 0 6 7"/></svg>';
+var panel=document.createElement('section');panel.id='mf-a11y-panel';panel.className='mf-a11y-panel';panel.hidden=true;panel.setAttribute('role','dialog');panel.setAttribute('aria-modal','false');panel.setAttribute('aria-labelledby','mf-a11y-title');panel.innerHTML='<div class="mf-a11y-head"><button type="button" class="mf-a11y-close" aria-label="Barrierefreiheit schließen">×</button><h2 id="mf-a11y-title">Barrierefreiheit</h2></div><div class="mf-a11y-grid">'+button('font','T⁺','Text vergrößern','100 %')+button('contrast','◐','Hochkontrast')+button('color','◉','Farbenblind-Modus')+button('mono','◒','Monochrom')+button('readable','Aa','Dyslexiefreundliche Schrift')+button('links','🔗','Links unterstreichen')+button('motion','Ⅱ','Animationen stoppen')+button('cursor','➤','Großer Cursor')+button('reset','↺','Alles zurücksetzen')+'</div>';
+document.body.appendChild(trigger);document.body.appendChild(panel);var close=panel.querySelector('.mf-a11y-close');function paint(){panel.querySelectorAll('[data-a11y]').forEach(function(b){var id=b.dataset.a11y,on=id==='font'?state.font>100:id==='motion'?!state.motion:id==='reset'?false:!!state[id];b.setAttribute('aria-pressed',on);if(id==='font')b.querySelector('small').textContent=state.font+' %';});}
+function hide(){panel.hidden=true;trigger.setAttribute('aria-expanded','false');trigger.focus();}function show(){panel.hidden=false;trigger.setAttribute('aria-expanded','true');paint();close.focus();}trigger.addEventListener('click',function(){panel.hidden?show():hide();});close.addEventListener('click',hide);window.addEventListener('keydown',function(e){if(e.key==='Escape'&&!panel.hidden)hide();});panel.addEventListener('click',function(e){var b=e.target.closest('[data-a11y]');if(!b)return;var id=b.dataset.a11y;if(id==='reset')state=Object.assign({},defaults);else if(id==='font')state.font=levels[(levels.indexOf(state.font)+1)%levels.length];else if(id==='motion')state.motion=!state.motion;else state[id]=!state[id];apply();paint();});paint();}
+if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',init);else init();})();