function AppVorlage() {
  var self = this;
  var appMenu;
  var vorlagen;
  var api;
  var userid;

  this.datei_neuer_text = function () {
    self.menu_message("Neuer Text");
  };

  /* Funktionen aus App-Vorlage */

  this.init = function () {
    self.vorlagen = new Vorlagen();
    self.appMenu = new AppMenu();
    self.appMenu.init(
            "data/menu/",
            "hauptmenue.json",
            "data/tpl/app-menu.tpl",
            ".west",
            "8em");

    document.querySelector('.hamburger').addEventListener('click', function (e) {
      self.menue_umschalten();
    });

  };

  this.menue_umschalten = function () {
    var ham = document.querySelector(".hamburger");
    ham.classList.toggle("is-active"); // hamburger-icon umschalten
    self.appMenu.toggle(); // menue oeffnen/schliessen
  };

  this.info_dialog_zeigen = function () {
    self.dialog_laden_und_zeigen('data/tpl/dlg-info.tpl', '');
    self.menue_umschalten();
  };

  this.seitenleiste_umschalten = function () {
    var ostDiv = document.querySelector('.ost');
    if (ostDiv.classList.contains('ost-open')) {
      ostDiv.classList.remove('ost-open');
      ostDiv.style.flexBasis = '0em';
    } else {
      ostDiv.classList.add('ost-open');
      ostDiv.style.flexBasis = '6em';
    }
    self.menue_umschalten();
  };

  this.fusszeile_umschalten = function () {
    var suedDiv = document.querySelector('.sued');
    if (suedDiv.classList.contains('sued-open')) {
      suedDiv.classList.remove('sued-open');
      suedDiv.style.height = '0';
    } else {
      suedDiv.classList.add('sued-open');
      suedDiv.style.height = '1.5em';
    }
    self.menue_umschalten();
  };

  this.menu_message = function (msg) {
    self.meldung_mit_timeout(msg, 1500);
    var suedDiv = document.querySelector('.sued');
    if (suedDiv.classList.contains('sued-open')) {
    } else {
      suedDiv.classList.add('sued-open');
      suedDiv.style.height = '1.5em';
    }
    self.menue_umschalten();
  };

  this.message_1 = function () {
    self.menu_message('Eine Mitteilung.');
  };

  this.message_2 = function () {
    self.menu_message('Was wir schon immer sagen wollten.');
  };

  this.message_3 = function (text) {
    self.menu_message(text);
  };

  this.meldung_mit_timeout = function (meldung, timeout) {
    var s = document.querySelector('.sued');
    s.textContent = meldung;
    setTimeout(function () {
      s.textContent = 'Bereit.';
      setTimeout(function () {
        var suedDiv = document.querySelector('.sued');
        if (suedDiv.classList.contains('sued-open')) {
          suedDiv.classList.remove('sued-open');
          suedDiv.style.height = '0';
        }
      }, 500);
    }, timeout);
  };

  /* Dialog-Funktionen */

  /*
   Einen Dialog aus Vorlagen erzeugen
   
   vurl - URL zur Dialogvorlage
   msgTpl - URL mit einer Vorlage eines Mitteilungstextes (optional)
   */
  this.dialog_laden_und_zeigen = function (vurl, msgTpl) {
    if (msgTpl !== '') {
      fetch(msgTpl)
              .then(data => {
                // Handle data
                self.dialog_zeigen(vurl, data);
              }).catch(error => {
        // Handle error
      });
    } else {
      self.dialog_zeigen(vurl, '');
    }
  };

  this.dialog_zeigen = function (vurl, inhalt) {
    var dlg = document.querySelector(".dialog");
    self.vorlagen.html_erzeugen(
            vurl,
            inhalt,
            function (html) {
              //dlg.html(html);
              dlg.style.height = '5em';
              dlg.innerHTML = html;
              document.querySelector('.close-btn').addEventListener('click', self.dialog_schliessen);
              //dlg.slideDown(300);
            });
  };

  self.dialog_schliessen = function () {
    document.querySelector('.close-btn').removeEventListener('click', self.dialog_schliessen);
    //$('.dialog').slideUp(300);
    var dlg = document.querySelector('.dialog');
    //dlg.style.display = "none";
    dlg.style.height = '0';
    dlg.innerHTML = '';
  };

  /* API functions */

  // http://localhost:8079/file-cms/svc?c=de.uhilger.filecms.api.FileMgr&f=JSONNICE&m=list&p=
  this.fm_get_list = function (relPfad) {
    $('#ansicht').attr('onclick', '').unbind('click');
    var m = '?c=de.uhilger.filecms.api.FileMgr&m=list&p=' + relPfad;
    var u = '../svc' + m;
    self.fm_get(u, "json", function (resp) {

      if (resp.List[0].FileRef !== undefined) {
        var files = new Array();
        if (resp.List[0].FileRef instanceof Array) {
          for (var i = 0; i < resp.List[0].FileRef.length; i++) {
            files.push(new FileRef(resp.List[0].FileRef[i]));
          }
        } else {
          files.push(new FileRef(resp.List[0].FileRef));
        }
        var fl = new FileList(files);
        fm_render_list(fl);
      } else {
        $('#dateien').empty();
      }

    });
  };

  /* -------- An- und Abmelden ------------- */

  this.fm_get_login = function() {
    var m = '?c=de.uhilger.filecms.pub.SessionManager&m=getSessionUser';
    var u = '../pub' + m;
    self.fm_get(u, "text", function (resp) {
      self.userid = resp;
      document.querySelector("#userMenu").textContent = resp;
    });
  };

  this.fm_logout = function() {
    var m = '?c=de.uhilger.filecms.pub.SessionManager&m=expireSession';
    var u = '../pub' + m;

    self.fm_get(u, "text", function (resp) {
      //$('#userMenu').text('nicht angemeldet');
      window.location.href = '../logout.html';
    });
  };

  /* -------- ajax helper functions ----------- */

  this.fm_get = function (u, dtype, scallback) {
    $.ajax({
      url: u,
      type: "GET",
      dataType: dtype,
      success: scallback,
      error: function (xhr, status, errorThrown) {
        alert("Error: " + errorThrown + " Status: " + status + " URL: " + u);
      },
      complete: function (xhr, status) {
        //console.log( "The request is complete!" );
      }

    });
  };

  this.fm_post = function (u, d, dtype, scallback) {
    $.ajax({
      url: u,
      data: d,
      type: "POST",
      dataType: dtype,
      success: scallback,
      error: function (xhr, status, errorThrown) {
        $('#fehler').html("Error: " + errorThrown + " Status: " + status);
      },
      complete: function (xhr, status) {
        //alert( "The request is complete!" );
      }
    });
  };

}