Tag-Ansicht: Zeitfenster-Doppelschieberegler (00-24 Uhr, stuendlich) ueber der Tabelle

Default = Auto (erste bis letzte Aktivitaet, auf volle Stunden). Zwei Fader zum
Zusammenschieben (z.B. aktuelle Stunde). Balken werden aufs Fenster gekappt (overflow).
"Ganzer Zeitraum"-Reset zurueck auf Auto.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

App/teacher.html

@@ -2096,6 +2096,56 @@ function _renderGenericCompareBody(rows, simId) {
   return html;
 }
 
+// Zeitfenster-Filter für die Tag-Ansicht (Stunden 0–24; null = Auto = erste bis
+// letzte Aktivität). Wird vom Doppel-Schieberegler über der Tabelle gesetzt.
+var _liveWin = { from: null, to: null };
+function _pad2(n){ return ('0'+n).slice(-2); }
+// Stunde/Minute in Wiener Zeit aus ms-Epoch.
+function _vHM(ms){
+  var s = new Date(ms).toLocaleString('en-GB', {timeZone:'Europe/Vienna', hour:'2-digit', minute:'2-digit', hour12:false});
+  var p = s.split(':'); return { h: parseInt(p[0],10)||0, m: parseInt(p[1],10)||0 };
+}
+function _tsInjectCss(){
+  if (document.getElementById('ts-css')) return;
+  var s = document.createElement('style'); s.id = 'ts-css';
+  s.textContent =
+    '.ts-wrap{margin:.2rem 0 .7rem}'
+   +'.ts-head{font-size:.74rem;color:#5a5a5a;margin-bottom:.5rem;display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}'
+   +'.ts-head b{color:#1f4b37;font-variant-numeric:tabular-nums}'
+   +'.ts-reset{font-size:.66rem;padding:.2rem .5rem;border:1px solid rgba(0,0,0,.15);border-radius:6px;background:#fff;color:#4a7c8a;cursor:pointer;font-weight:600}'
+   +'.ts-reset:hover{background:#f0f8fa}'
+   +'.ts-slider{position:relative;height:34px;margin:0 10px}'
+   +'.ts-track{position:absolute;left:0;right:0;top:15px;height:5px;border-radius:3px;background:#e3e0d5}'
+   +'.ts-range{position:absolute;top:15px;height:5px;border-radius:3px;background:#4a7c8a}'
+   +'.ts-slider input[type=range]{position:absolute;left:0;width:100%;top:0;height:34px;margin:0;background:none;pointer-events:none;-webkit-appearance:none;appearance:none}'
+   +'.ts-slider input[type=range]::-webkit-slider-thumb{pointer-events:auto;-webkit-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:#4a7c8a;border:3px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.35);cursor:pointer;margin-top:0}'
+   +'.ts-slider input[type=range]::-moz-range-thumb{pointer-events:auto;width:20px;height:20px;border-radius:50%;background:#4a7c8a;border:3px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.35);cursor:pointer}'
+   +'.ts-slider input[type=range]::-webkit-slider-runnable-track{background:none;height:34px}'
+   +'.ts-ticks{position:relative;height:12px;margin:0 10px}'
+   +'.ts-ticks span{position:absolute;top:0;transform:translateX(-50%);font-size:.54rem;color:#a8a8a8}';
+  document.head.appendChild(s);
+}
+// Schieberegler-Interaktion (global, für inline-Handler).
+function _tsClamp(){
+  var fe=document.getElementById('tsFrom'), te=document.getElementById('tsTo');
+  if(!fe||!te) return null;
+  var f=+fe.value, t=+te.value;
+  if(f>=t){ if(f>=24){f=23;} t=Math.min(24,f+1); if(+te.value<t) te.value=t; if(+fe.value>f) fe.value=f; }
+  return {f:f,t:t};
+}
+function _tsVisual(){
+  var v=_tsClamp(); if(!v) return;
+  var r=document.getElementById('tsRange'); if(r){ r.style.left=(v.f/24*100)+'%'; r.style.width=((v.t-v.f)/24*100)+'%'; }
+  var l=document.getElementById('tsLbl'); if(l) l.textContent=_pad2(v.f)+':00 – '+_pad2(v.t)+':00';
+}
+function _tsCommit(){
+  var v=_tsClamp(); if(!v) return;
+  _liveWin.from=v.f; _liveWin.to=v.t;
+  renderLiveSummary();
+}
+function _tsReset(){ _liveWin.from=null; _liveWin.to=null; renderLiveSummary(); }
+window._tsVisual=_tsVisual; window._tsCommit=_tsCommit; window._tsReset=_tsReset;
+
 async function renderLiveSummary() {
   console.log('[live-summary] renderLiveSummary() aufgerufen, date='+_liveDate);
   var host = document.getElementById('tab-live');
@@ -2183,10 +2233,17 @@ async function renderLiveSummary() {
   });
   var dayBase = new Date(_liveDate+'T00:00:00').getTime();
   if (!isFinite(minMs)) { minMs = dayBase + 8*3600*1000; maxMs = dayBase + 14*3600*1000; }
-  var PAD_MS   = 4*60*1000;                 // knappes Polster vorne/hinten
-  var winStart = minMs - PAD_MS;
-  var winEnd   = maxMs + PAD_MS;
-  if (winEnd - winStart < 30*60*1000) winEnd = winStart + 30*60*1000;   // min. 30-min-Fenster
+  // Auto-Grenzen (volle Stunden, Wiener Zeit): erste bis letzte Aktivität.
+  var _lo=_vHM(minMs), _hi=_vHM(maxMs);
+  var autoFromH = Math.max(0, _lo.h);
+  var autoToH   = Math.min(24, _hi.h + ((_hi.m>0)?1:0));
+  if (autoToH <= autoFromH) autoToH = Math.min(24, autoFromH+1);
+  // Effektives Fenster: Schieberegler-Auswahl (falls gesetzt) ODER Auto.
+  var fromH = (_liveWin.from!=null) ? _liveWin.from : autoFromH;
+  var toH   = (_liveWin.to  !=null) ? _liveWin.to   : autoToH;
+  if (toH <= fromH) toH = Math.min(24, fromH+1);
+  var winStart = dayBase + fromH*3600*1000;
+  var winEnd   = dayBase + toH*3600*1000;
   var winSpanMs = winEnd - winStart;
   function _msToPct(ms) { return ((ms - winStart) / winSpanMs) * 100; }
   function _fmtHM(ms) {
@@ -2199,6 +2256,25 @@ async function renderLiveSummary() {
         + _fmtHM(winStart) + '–' + _fmtHM(winEnd)
         + ' · Klick auf Balken öffnet Details.</p>';
 
+  // Zeitfenster-Schieberegler (00–24 Uhr, stündlich; zwei Fader). Default = Auto
+  // (erste bis letzte Aktivität). onchange committet + rendert neu, oninput nur Visual.
+  _tsInjectCss();
+  var _isAuto = (_liveWin.from==null && _liveWin.to==null);
+  var _ticks=''; for (var _h=0;_h<=24;_h+=3){ _ticks += '<span style="left:'+(_h/24*100)+'%">'+_pad2(_h)+'</span>'; }
+  html += '<div class="ts-wrap">'
+        + '<div class="ts-head">🕒 Zeitraum <b id="tsLbl">'+_pad2(fromH)+':00 – '+_pad2(toH)+':00</b>'
+        +   (_isAuto ? '<span style="color:#8a8a8a;font-size:.66rem">Auto: erste – letzte Aktivität</span>'
+                     : '<button class="ts-reset" onclick="_tsReset()">↺ ganzer Zeitraum</button>')
+        + '</div>'
+        + '<div class="ts-slider">'
+        +   '<div class="ts-track"></div>'
+        +   '<div class="ts-range" id="tsRange" style="left:'+(fromH/24*100)+'%;width:'+((toH-fromH)/24*100)+'%"></div>'
+        +   '<input type="range" id="tsFrom" min="0" max="24" step="1" value="'+fromH+'" aria-label="Von" oninput="_tsVisual()" onchange="_tsCommit()">'
+        +   '<input type="range" id="tsTo" min="0" max="24" step="1" value="'+toH+'" aria-label="Bis" oninput="_tsVisual()" onchange="_tsCommit()">'
+        + '</div>'
+        + '<div class="ts-ticks">'+_ticks+'</div>'
+        + '</div>';
+
   // Marker an sauberen Uhrzeiten INNERHALB des Fensters — Schrittweite passt sich
   // der Spanne an (kurze Stunde = 15-min-Takt, langer Tag = Stunden-Takt), damit
   // die Achse weder leer noch überladen wirkt. Erster Marker = erste saubere Zeit
@@ -2238,7 +2314,7 @@ async function renderLiveSummary() {
       html += '<div style="height:28px;background:repeating-linear-gradient(45deg,rgba(0,0,0,.02) 0 6px,transparent 6px 12px);border-radius:4px;display:flex;align-items:center;padding:0 .6rem;font-size:.66rem;color:#aaa;font-style:italic">nicht gespielt</div>';
       return;
     }
-    html += '<div style="position:relative;height:28px;background:#fafaf6;border-radius:4px">';
+    html += '<div style="position:relative;height:28px;background:#fafaf6;border-radius:4px;overflow:hidden">';
     // Stunden-Hilfslinien im Hintergrund
     scaleMarks.forEach(function(mk){
       if (!mk.isHour) return;