(function(exports) {

  if (location != 'chrome://messenger/content/messenger.xhtml') return;


  //Das Folgende verhindert, das title Attribute auf Zellen
  //der Nachrichtenliste gesetzt werden, sofern der Inhalt nicht
  //verkürzt wurde
  //  doc.l10n.setAttributes: 
  //    https://searchfox.org/firefox-main/source/dom/webidl/DOMLocalization.webidl#83
  //    https://searchfox.org/firefox-main/source/dom/l10n/DOMLocalization.cpp#140
  const doc=gTabmail.tabInfo[0].chromeBrowser.contentWindow.document;
  doc.l10n.easyPeasy_l10nSetAttributes=(elem, label, props)=>{
//console.log('cell: '+label+' '+elem.outerHTML+' props='+JSON.stringify(props));
    if (props?.hasOwnProperty('title') &&
        elem.hasAttribute('data-column-name') &&  //role="gridcell" not on Mac
        elem.parentNode.getAttribute('is')=='thread-row' //messages list
    ) {
      //remove title attribute from props if content is not overflown
      let cont=elem.querySelector('span')?.parentNode;
      let overflow;
      if (cont) { //subject col
        overflow=cont.scrollWidth>cont.clientWidth;
//const box=cont.getBoxQuads()[0];
//console.log('cell: '+elem.className+' overflow='+overflow+' '+cont.scrollWidth+'>'+cont.clientWidth+' '+JSON.stringify(box));
      } else {  //all other cols are pure td
        //for td the scrollWidth is always equal to clientWidth :-(
        cont=elem.firstChild;  //The TEXT node
        const box=cont.getBoxQuads()[0];
        const sw=box.p2.x-box.p1.x;
        let delta=9;  //9px padding
        if (elem.dataset.columnName=='correspondentcol') delta+=18; //text-indent style
        overflow=sw>elem.clientWidth-delta;
//console.log('cell: '+elem.className+' overflow='+overflow+' '+sw+'>'+elem.clientWidth+' '+JSON.stringify(box));
      }
      if (!overflow) props.title='';
    }
    //Call saved original function
    try {
      doc.l10n.easyPeasy_savedL10nSetAttributes(elem, label, props);
    } catch(e) { console.log('throws: '+e); }
  };
  //Save original function for later use (if not already saved)
  if (typeof doc.l10n.easyPeasy_savedL10nSetAttributes=='undefined') {
console.log('saving l10.setAttributes');
    doc.l10n.easyPeasy_savedL10nSetAttributes=doc.l10n.setAttributes;
  }
else console.log('already saved l10.setAttributes');
  //replace original function with our function
  doc.l10n.setAttributes=doc.l10n.easyPeasy_l10nSetAttributes

  ////////////////////////////////////

  // Load tooltip definitions
  exports.easyPeasy.loadFile('tooltips.def', exports.easyPeasy);
//console.log('tooltips: '+JSON.stringify(exports.easyPeasy.tooltips));

  //setzen von Tooltips/Labels
  exports.easyPeasy.setButtons=() => {
    const ut=document.getElementById('unifiedToolbarContent');
ut.style.flexWrap='wrap';
    for (const tt of exports.easyPeasy.tooltips) {
      switch (tt.typ) {
        case 'toolbar':
          const tb=ut.querySelector('li[item-id="'+tt.id+'"] button        ');
          if (tb) {
            if (tt.hasOwnProperty('title')) tb.title=tt.title;
            if (tt.hasOwnProperty('label')) tb.lastElementChild.textContent=tt.label;
          } else {
            console.error('Toolbar button "'+tt.id+'" nicht gefunden');
          }
          break;
        case 'liste':
//console.log('search '+tt.id);
          const lb=gTabmail.currentAbout3Pane.document.getElementById(tt.id);
          if (lb) {
//console.log('have '+tt.id+' '+lb+' '+lb.title+'|'+lb.textContent);
            if (tt.hasOwnProperty('title')) lb.title=tt.title;
            if (tt.hasOwnProperty('label')) lb.textContent=tt.label;
//console.log('now '+tt.id+' '+lb+' '+lb.title+'|'+lb.textContent);
          } else {
            console.error('Spalte "'+tt.id+'" nicht gefunden');
          }
          break;
        case 'filter':
          const qfb=gTabmail.currentAbout3Pane.document.getElementById(tt.id);
          if (qfb) {
//console.log('have '+tt.id+' '+qfb+' '+qfb.title+'|'+qfb.textContent);
            if (tt.hasOwnProperty('title')) qfb.title=tt.title;
            if (tt.hasOwnProperty('label')) qfb.textContent=tt.label;
//console.log('now '+tt.id+' '+qfb+' '+qfb.title+'|'+qfb.textContent);
          } else {
            console.error('Schnellfilter Button "'+tt.id+'" nicht gefunden');
          }
          break;
        default:
          console.error('Tooltip Typ "'+tt.typ+'" ist nicht bekannt');
      } 
    }
  }

  //redo tooltips/labels after a switch of folders
  //  folderURIChanged comes too early
  gTabmail.tabInfo[0].chromeBrowser.contentWindow.addEventListener("allMessagesLoaded", (event)=>{
//console.log('allMessagesLoaded to '+event.detail);
    exports.easyPeasy.setButtons();
  } );

  //redo tooltips/labels after tabs has been switched
  const tabMonitor={
    monitorName: "eaysPeasy_setTooltips",
    onTabTitleChanged(tab) {},
    onTabClosing(tab) {},
    onTabPersist(tab) {},
    onTabRestored(tab, state) {},
    onTabOpened(tab) {},
    onTabSwitched(newTab, oldTab) {
//console.log('tabMonitor setTooltips '+newTab.mode.name);
      if (newTab.mode.name=='mail3PaneTab') {
        //Die unified Toolbar kann noch die Buttons des alten Tabs enthalten.
        //Daher die Ausführung etwas verzögern
        setTimeout(exports.easyPeasy.setButtons, 200);
      }
    },
  };
  //gTabmail.unregisterTabMonitor(tabMonitor);
  gTabmail.registerTabMonitor(tabMonitor);

  // redo tooltips/labels after toolbar has been customized
  if (!exports.easyPeasy.tooltip_observer) {
    exports.easyPeasy.tooltip_observer={
      observe() {
        setTimeout(()=>exports.easyPeasy.setButtons(), 200);
      }
    };
//      try { Services.obs.removeObserver(exports.easyPeasy.tooltip_observer, 'unified-toolbar-state-change'); }
//      catch(e) { console.log('removing observer throws: '+e); }
    Services.obs.addObserver(exports.easyPeasy.tooltip_observer, 'unified-toolbar-state-change');
  }

})(this);