/*
    Dateiverwaltung - File management in your browser
    Copyright (C) 2017 Ulrich Hilger, http://uhilger.de

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as
    published by the Free Software Foundation, either version 3 of the
    License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

var cm;
var pfad = '';
var modus = 'kacheln';
var openFileName = '';
var ed;
var openEditor;
var userid;
var tmo;
var tmo2;
var cutCopySrcDir;
var cutCopyFiles;
var cutCopyOperation;
var loc;
var PERS_DIR = "Persoenlich";
var PUB_DIR = "Oeffentlich";
var DAV_DIR = "Austausch";
var BASE_DIR = "$basis";
var DATA_DIR = "$daten";
var WWW_DIR = "www";
var compilerIssues;
var fm_slideshow = false;

function fm_init() {
  $("#mce-editor").hide();
  $('.codeeditor-space').hide();
  $('.code-editor-container').hide();
  $('.sued').hide();
  //$('.ost').attr('flex-basis', 0);
  $('#newTab').on('click', fm_newTab);
  $('#newTextFile').on('click', fm_menu_neue_textdatei);
  $('#newDoc').on('click', fm_menu_neues_dokument);
  $('#newFolder').on('click', fm_get_new_folder);
  $('#viewFile').on('click', fm_view_file);
  $('#viewSlideshow').on('click', fm_view_slideshow);
  $('#editTextFile').on('click', function() {
    fm_get_file_content('text');
  });
  $('#editDocFile').on('click', function() {
    fm_get_file_content('dok');
  });
  $('#saveFile').on('click', fm_menu_datei_speichern);
  $('#saveFileAs').on('click', fm_menu_datei_speichern_unter);
  $('#closeFile').on('click', fm_menu_datei_schliessen);
  $('#renameFile').on('click', fm_menu_datei_umbenennen);
  $('#m-zip').on('click', fm_menu_ordner_packen);
  $('#m-unzip').on('click', fm_menu_datei_entpacken);
  $('#m-html-export').on('click', fm_menu_html_export);
  $('#m-del').on('click', fm_menu_delete);
  $('#m-cut').on('click', fm_menu_cut);
  $('#m-copy').on('click', fm_menu_copy);
  $('#m-paste').on('click', fm_menu_paste);
  $('#m-shrink').on('click', fm_menu_shrink);
  $('#m-rotate').on('click', fm_menu_rotate);
  $('#m-toggle-slideshow').on('click', fm_toggle_show_slideshow);
  $('#m-test').on('click', fm_menu_test);
  $('#m-test-2').on('click', fm_menu_compile);
  $('#m-test-3').on('click', fm_menu_compile_all);
  $('#m-compile-results').on('click', fm_fusszeile_zeigen);
  $('#m-build-app').on('click', fm_menu_build_app);
  $('#m-ant-build').on('click', fm_menu_ant_build);
  $('#saveModal').on('hidden.bs.modal', function (e) {
    $('#modal_ok').attr('onclick','').unbind('click');
  });
  $('#logout').click(fm_logout);  
  $('#fusszeile-schliessen').on('click', fm_fusszeile_schliessen);
  fm_get_login();
  var parsedUrl = new URL(window.location.href);
  var wunschPfad = parsedUrl.searchParams.get("pfad");
  
  if(wunschPfad !== null && wunschPfad.length > 0) {
    //if(wunschPfad.length > 0) {
      pfad = wunschPfad;
      fm_get_list(wunschPfad);
      fm_init_uploader();
    //} else {
    //  fm_get_list('');
    //  fm_init_uploader();
    //}
  } else {
    fm_get_list('');
    fm_init_uploader();
  }
  loc = window.location.protocol + '//' + window.location.host;
}

function fm_newTab() {
  window.open('/file-cms/ui/?pfad=' + pfad, '_blank');
}

function fm_toggle_show_slideshow() {
  if(fm_slideshow) {
    $('#m-toggle-slideshow').text('Diashow einschalten');
    fm_slideshow = false;
  } else {
    $('#m-toggle-slideshow').text('Diashow ausschalten');
    fm_slideshow = true;
  }
}

function fm_resize_editor() {
  window.clearTimeout(tmo);
  tmo = window.setTimeout(function () {
    try {
      var myHeight = $('.zentrum').height() - $('.nord').height() - 4;
      ed.theme.resizeTo('100%', myHeight);  // sets the dimensions of the editable area
    } catch (err) {
    }
  }, 200);
}

function fm_fusszeile_schliessen() {
  $('.sued').hide();
}

function fm_fusszeile_zeigen() {
  $('.sued').show();
}

function fm_get_path(uid) {
  //console.log('pfad: ' + pfad);
  var restdir;
  if(pfad.indexOf(PUB_DIR) > -1) {
    restdir = pfad.substr(PUB_DIR.length);
  } else if(pfad.indexOf(PERS_DIR) > -1) {
    restdir = pfad.substr(PERS_DIR.length);
  } else if(pfad.indexOf(BASE_DIR) > -1) {
    restdir = pfad.substr(BASE_DIR.length);
  } else if(pfad.indexOf(DATA_DIR) > -1) {
    restdir = pfad.substr(DATA_DIR.length);
  } else if(pfad.indexOf(DAV_DIR) > -1) {
    restdir = pfad.substr(DAV_DIR.length);
  }
  if(restdir !== undefined && restdir.startsWith('/')) {
    restdir = restdir.substr(1);
    if(restdir.indexOf(WWW_DIR) > -1) {
      restdir = restdir.replace(WWW_DIR, 'data');
    }
  }
  var pdir = fm_get_base(uid);
  // console.log('fm_get_path path: ' + pdir + "/" + restdir);
  if(restdir.length > 1) {
    return pdir + "/" + restdir;
  } else {
    return pdir;
  }
}

function fm_get_base(uid) {
  //console.log('pfad: ' + pfad);
  var pdir;
  if(pfad.indexOf(PUB_DIR) > -1) {
    pdir = '/data/' + uid;
  } else if(pfad.indexOf(PERS_DIR) > -1) {
    pdir = '/home/' + uid;
  } else if(pfad.indexOf(BASE_DIR) > -1) {
    pdir = '';
  } else if(pfad.indexOf(DATA_DIR) > -1) {
    pdir = '';
  }
  //console.log('fm_get_base base: ' + pdir + uid);
  return pdir;
}

function fm_dok_editor_init(uid) {
  var base = fm_get_path(uid);
  edCount = 0;
  //console.log("fm_dok_editor_init calling tinymce.init with base: " + base + "/");
  
  /*
   * vgl.
   * http://stackoverflow.com/questions/4651676/how-do-i-remove-tinymce-and-then-re-add-it
   */
  //tinymce.EditorManager.execCommand('mceRemoveControl',true, 'textarea.text-editor');
  //tinymce.EditorManager.execCommand('mceAddControl',true, editor_id);
  if(ed !== undefined) {
    ed.destroy();
  }
  tinymce.remove('textarea.text-editor');
  tinymce.EditorManager.editors = []; 
  
  /*
   * Konfiguration TinyMCE
   */
  tinymce.init({
    content_css : "/file-cms/ui/mce.css",
    //content_css: "/jslib/bootstrap/css/bootstrap.min.css",
    selector: "textarea.text-editor",
    statusbar: false,
    menubar: false,
    plugins: 'advlist charmap code image link lists media table print preview save table textcolor importcss',
    toolbar: 'undo redo | styleselect | image table | link unlink | bullist numlist | outdent indent | code',
    /*
    menu: {
      file: {title: 'File', items: 'savevers | exit'},
      edit: {title: 'Edit', items: 'undo redo | cut copy paste pastetext | selectall'},
      view: {title: 'View', items: 'visualaid | code | link image media | template hr'},
    },
    */
    resize: 'both',
    importcss_append: true,
    width: "100%",
    height: '100%',
    relative_urls : true, 
    convert_urls : false, 
    document_base_url : base + "/",
    setup: function (editor) {
      ed = editor;
    }
  });
  
  $(window).on('resize', fm_resize_editor);
  fm_resize_editor();
}

/* ----- Uploader Anfang ----------*/

var dateien = new Array();

function fm_init_uploader() {
  var dropzone = document.getElementById("dateien");  
  dropzone.ondragover = dropzone.ondragenter = function(event) {  
    event.stopPropagation();  
    event.preventDefault();  
  };

  dropzone.ondrop = function(event) {  
    event.stopPropagation();  
    event.preventDefault();  
    var fileList = event.dataTransfer.files;  
    for (var i=0; i<fileList.length; i++) {  
      dateien.push(fileList[i]);
    }
    sendFile(dateien.pop());
  };
}

/* ----- Uploader Ende --------------- */

/* ------- Dateifunktionen Start ----------- */

function fm_menu_cut() {
  //alert('fm_menu_cut');
  fm_cut_files();
}
function fm_menu_copy() {
  //alert('fm_menu_copy');
  fm_copy_files();
}
function fm_menu_paste() {
  //alert('fm_menu_paste');
  fm_paste_files();
}
function fm_menu_delete() {
  $('#confirmOk').click(function() {
    $('#confirmOk').attr('onclick','').unbind('click');
    fm_del_files();
  });
  $('#confirmOk').text("Loeschen");
  $('#confirmOk').removeClass('btn-primary');
  $('#confirmOk').addClass('btn-danger');
  $('#confirmClose').hide();
  $('#confirmModalTitle').text("Löschen");
  $('#confirmModalBody').text("Wirklich löschen?");
  $('#confirmModal').modal({
    keyboard: false,
    show: true
  });
}

/*
 * Gewaehlte Dateien feststellen
 * 
 * @returns {String} eine per JSON.stringify schon vorbereitete List zum 
 * Absenden als Parameter an den Server
 */
function fm_gewaehlte_dateien() {
  var gewaehlte = $('.datei-gewaehlt');
  /*
  //console.log('anzahl: ' + gewaehlte.length);
  var fnames = new Array();
  var i = 0;
  while(i < gewaehlte.length) {
    var str = { "java.lang.String": $(gewaehlte[i]).text()};
    fnames.push(str);
    //console.log('loeschen ' + pfad + ' ' + $(gewaehlte[i]).text());
    //i += 2;
    i++;
  }
  var liste = '{"List":' + JSON.stringify(fnames) + '}';
  // 'liste' enthaelt:
  // {"List":[{"java.lang.String":"test3.txt"},{"java.lang.String":"Test1.txt"},{"java.lang.String":"Test2.txt"}]}
  // und wird auf dem Server zu einer List[ArrayList<String>] bei der jede ArrayList<String> nur ein Element hat 
  return liste;
  */
  return fm_dateiliste_bilden(gewaehlte);
}

function fm_dateiliste_bilden(gewaehlte) {
  var fnames = new Array();
  var i = 0;
  while(i < gewaehlte.length) {
    var str = { "java.lang.String": $(gewaehlte[i]).text()};
    fnames.push(str);
    //console.log('loeschen ' + pfad + ' ' + $(gewaehlte[i]).text());
    //i += 2;
    i++;
  }
  var liste = '{"List":' + JSON.stringify(fnames) + '}';
  // 'liste' enthaelt:
  // {"List":[{"java.lang.String":"test3.txt"},{"java.lang.String":"Test1.txt"},{"java.lang.String":"Test2.txt"}]}
  // und wird auf dem Server zu einer List[ArrayList<String>] bei der jede ArrayList<String> nur ein Element hat 
  return liste;
}

function fm_menu_html_export() {
  fm_export_html();
}

/* --------- Dateifunktionen Ende ---------- */

function fm_menu_test() {
  var w = $('.ost').width();
  if(w == 0) {
    $('.ost').width('20%');
    $('.ost').text('Hallo Welt!');
  } else {
    $('.ost').empty();
    $('.ost').width(0);
  }
}

function fm_menu_compile() {
  fm_compile('0', fm_mark_compile_results_in_editor);
}
function fm_menu_compile_all() {
  fm_compile_all();
}

function fm_menu_build_app() {
  fm_build_app();
}

function fm_menu_ant_build() {
  fm_ant_build();
}

function fm_mark_compile_results_in_editor(resp) {
  cm.clearGutter("breakpoints");

  if(resp.List[0].CompilerIssue !== undefined) {
    cm.setGutterMarker(0, "breakpoints", makeMarker("Code hat Fehler"));
    var lno;
    var eMsg;
    if(resp.List[0].CompilerIssue instanceof Array) {
      var issueNo = 0;
      while(issueNo < resp.List[0].CompilerIssue.length) {
        // console.log(resp.List[0].CompilerIssue[issueNo].kind);
        // console.log(resp.List[0].CompilerIssue[issueNo].lineNumber);
        // console.log(resp.List[0].CompilerIssue[issueNo].sourceName);
        // console.log(resp.List[0].CompilerIssue[issueNo].message);
        lno = resp.List[0].CompilerIssue[issueNo].lineNumber;
        eMsg = resp.List[0].CompilerIssue[issueNo].kind + ' ' + resp.List[0].CompilerIssue[issueNo].message;
        cm.setGutterMarker(lno-1, "breakpoints", makeMarker(eMsg));
        issueNo++;
      }
    } else {
      lno = resp.List[0].CompilerIssue.lineNumber;
      eMsg = resp.List[0].CompilerIssue.kind + ' ' + resp.List[0].CompilerIssue.message;
      cm.setGutterMarker(lno-1, "breakpoints", makeMarker(eMsg));
    }
  }
}

function fm_ansicht_umschalten() {
  if($('#ansicht').children(0).hasClass('fa-th-list')) {
    $('#ansicht').children(0).addClass('fa-th-large');
    $('#ansicht').children(0).removeClass('fa-th-list');
    modus = 'liste';
  } else {
    $('#ansicht').children(0).addClass('fa-th-list');    
    $('#ansicht').children(0).removeClass('fa-th-large');
    modus = 'kacheln';
  }
  fm_get_list(pfad);
}

function fm_set_modus() {
  if(modus == 'kacheln') {
    $('#ansicht').children(0).addClass('fa-th-list');    
    $('#ansicht').children(0).removeClass('fa-th-large');  
  } else {
    $('#ansicht').children(0).addClass('fa-th-large');
    $('#ansicht').children(0).removeClass('fa-th-list');    
  }
}

function fm_menu_neue_textdatei() {
  fm_text_edit('Neue Datei');
}

function fm_menu_neues_dokument() {
  fm_dok_edit('');
}

function fm_menu_datei_schliessen() {
  if(openEditor === 'text') {
    if(!cm.getDoc().isClean()) {
      fm_ask_for_save();
    } else {
      fm_do_close();
    }
  } else {
    if(tinymce.activeEditor.undoManager.hasUndo()) {
      fm_ask_for_save();
    } else {
      fm_do_close();
    }
  }
}

function fm_ask_for_save() {
  // hier Abfrage ob gespeichert werden soll    
  $('#confirmOk').click(function() {
    $('#confirmOk').attr('onclick','').unbind('click');
    fm_menu_datei_speichern(function() {
      fm_do_close();
    });
  });
  $('#confirmCancel').click(function() {
    $('#confirmCancel').attr('onclick','').unbind('click');
  });
  $('#confirmClose').show();
  $('#confirmClose').click(function() {
    $('#confirmClose').attr('onclick','').unbind('click');
    fm_do_close();
  });
  $('#confirmOk').text("Speichern");
  $('#confirmOk').addClass('btn-primary');
  $('#confirmOk').removeClass('btn-danger');
  $('#confirmModalTitle').text("Schliessen");
  $('#confirmModalBody').text("Speichern vor dem Schliessen?");
  $('#confirmModal').modal({
    keyboard: false,
    show: true
  });
}

function fm_do_close() {
  $('.codeeditor-space').hide();
  $('.code-editor-container').hide();
  $("#mce-editor").hide();
  if(cm !== undefined) {
    cm.toTextArea();
  }
  openFileName = '';
  openEditor = '';
  fm_get_list(pfad);
  fm_filectls_show();
}

function fm_dateiwahl(ev) {
  var elem = this;
  //console.log('dateiwahl nach click, event shift: ' + ev.shiftKey + ", event ctrl: " + ev.ctrlKey);
  if(modus == 'kacheln') {
    // Kacheln
    if($(elem).children(0).hasClass('fa-folder')) {
      if(/*ev.shiftKey || */ ev.ctrlKey) {
        $(elem).find('.dateiname').addClass('datei-gewaehlt');
      } else {
        var ordner = $(elem).text().trim();
        if(pfad.length > 0) {
          pfad = pfad + '/' + ordner;
        } else {
          pfad = ordner;
        }
        fm_get_list(pfad);
      }
    } else if($(elem).children(0).hasClass('datei')) {
      if(/*ev.shiftKey || */ ev.ctrlKey) {
        // mehrere Dateien sollen gewaehlt werden
      } else {
        $('.datei-gewaehlt').removeClass('datei-gewaehlt');        
      }
      $(elem).find('.dateiname').addClass('datei-gewaehlt');
    } else {
      //console.log('kein folder oder file...');
    }
  } else {
    // Liste
    if($(elem).find('.datei-elem').children(0).hasClass('fa-file-o')) {
      // Datei
      if(/*ev.shiftKey || */ ev.ctrlKey) {
        // mehrere Dateien sollen gewaehlt werden
      } else {
        $('.table-info').removeClass('table-info');
        $('.datei-gewaehlt').removeClass('datei-gewaehlt');
      }
      $(elem).addClass('table-info');
      $(elem).find('.dateiname').addClass('datei-gewaehlt');
    } else {
      // Ordner
      if(/*ev.shiftKey || */ ev.ctrlKey) {
        $(elem).children(0).addClass('datei-gewaehlt');
      } else {
        var ordner = $(elem).find('.dateiname').text();
        if(pfad.length > 0) {
          pfad = pfad + '/' + ordner;
        } else {
          pfad = ordner;
        }
        fm_get_list(pfad);
      }
    }   
  }
}

function fm_bc_click() {
  var elem = this;
  var bcPfad = $(elem).attr('rpath');
  if(bcPfad !== undefined) {
    pfad = bcPfad;
    fm_get_list(bcPfad);
  } else {
    pfad = '';
    fm_get_list('');
  }
}

function fm_text_edit(content, mode) {
  fm_filectls_hide();
  $('.codeeditor-space').show();
  $('.code-editor-container').show();
  fm_code_edit(content, mode);  
  openEditor = 'text';
}

function fm_dok_edit(content) {
  fm_filectls_hide();
  fm_dok_editor_init(userid);
  $("#mce-editor").show();
  
  window.clearTimeout(tmo2);
  tmo2 = window.setTimeout(function () {
    try {
      ed.setContent(content);
      openEditor = 'dok';  
    } catch (err) {
    }
  }, 200);
}

function fm_filectls_hide() {
  $('#zentrum_bc').hide();
  $('#dateien').hide();
  $('#editMenu').addClass('disabled');
}

function fm_filectls_show() {
  $('#zentrum_bc').show();
  $('#dateien').show();  
  $('#editMenu').removeClass('disabled');
}
/* ----- API Calls ------------- */



function fm_view_file() {
  // http://localhost:8080/file-cms/ui/#  
  // http://localhost:8080/file-cms/data/admin/usw.
  
  var userid = $('#userMenu').text();
  var gewaehlte = $('.datei-gewaehlt');
  var fname = $(gewaehlte[0]).text();
  
  var path = fm_get_path(userid);
  
  window.open(path + '/' + fname, '_blank');
}

function fm_view_slideshow() {
  
  // https://localhost:8443/file-cms/fotos/?o=ulrich/bilder/diashow/ordnername

  
  var userid = $('#userMenu').text();
  var gewaehlte = $('.datei-gewaehlt');
  var fname = $(gewaehlte[0]).text();
  
  var path = fm_get_path(userid);
  var restdir = path;
  if(path.indexOf('/data/') > -1) {
    restdir = path.substr('/data/'.length);
  }
  
  //window.open('/file-cms/fotos/?o=' + userid + '/' + path + '/' + fname, '_blank');
  window.open('/file-cms/fotos/?o=' + restdir + '/' + fname, '_blank');
}

function fm_menu_datei_umbenennen() {
  var gewaehlte = $('.datei-gewaehlt');
  var fname = $(gewaehlte[0]).text();

  $('#modal_ok').click(function() {
    // hier umbenennen
    fm_rename_file(fname, pfad, $('#dateiname').val());
  });
  $('#saveModalTitle').text('Datei umbenennen');
  $('#dialogfrage').text("Neuer Dateiname?");  

  if(fname !== undefined) {
    $('#dateiname').val(fname);
    $('#dateiname').attr('placeholder', 'Dateiname');
    $('#saveModal').modal({
      keyboard: false,
      show: true
    });
  }
}

function fm_menu_datei_entpacken() {
  var gewaehlte = $('.datei-gewaehlt');
  var fname = $(gewaehlte[0]).text();
  fm_unzip_file(fname);
}

/**
 * Anname: Man ist in dem Ordner, der gepackt werden soll.
 * Dann ist das Archiv anschliessend im Eltern-Ordner.
 */
function fm_menu_ordner_packen() {
  //var gewaehlte = $('.datei-gewaehlt');
  //var fname = $(gewaehlte[0]).text();
  //console.log("Pfad: " + pfad + ", Datei: " + fname);
  fm_pack_folder();
}

/*
 * Hier merkt sich die Dateiverwalting die markierten Dateien fuer 
 * eine Dateioperation. Bei cut wird in der 'paste' Operation auf dem Server 
 * fuer die 'gemerkten' Dateien ein Move gemacht. Die Dateien werden 
 * vom gewaehlten Ort zum Zielort verschoben.
 * 
 * @returns {undefined}
 */
function fm_cut_files() {
  cutCopySrcDir = pfad;
  cutCopyFiles = fm_gewaehlte_dateien();
  cutCopyOperation = 'cut';
}

/*
 * Hier merkt sich die Dateiverwalting die markierten Dateien fuer 
 * eine Dateioperation. Bei copy wird in der 'paste' Operation auf dem Server 
 * fuer die 'gemerkten' Dateien eine Kopie gemacht. Die Dateien werden 
 * am gewaehlten Ort behalten und am Zielort wird eine Kopier der 
 * gewaehlten DAteien erstellt
 * 
 * @returns {undefined}
 */
function fm_copy_files() {
  cutCopySrcDir = pfad;
  cutCopyFiles = fm_gewaehlte_dateien();
  cutCopyOperation = 'copy';
}


function fm_render_list(fl) {
  if(modus == 'kacheln') {
    // Kachelansicht
    var template = $('#tpl-kacheln').html();
    Mustache.parse(template);   // optional, speeds up future uses
    $('.datei-zeile').attr('onclick','').unbind('click');
    $('#dateien').empty();
    $('#dateien').html(Mustache.render(template, fl));
    $('.figure').click(fm_dateiwahl);
  } else {
    // Listenansicht
    var template = $('#tpl-liste').html();
    Mustache.parse(template);   // optional, speeds up future uses
    $('.figure').attr('onclick','').unbind('click');
    $('#dateien').empty();
    $('#dateien').html(Mustache.render(template, fl));
    $('.datei-zeile').click(fm_dateiwahl);
  }
  /*
  if(modus == 'kacheln') {
    // Kachelansicht
    $.get('tpl-kacheln.txt', function(template) {
      $('#dateien').empty();
      $('#dateien').html(Mustache.render(template, fl));
      $('.figure').click(fm_dateiwahl);
    });
    $('.datei-zeile').attr('onclick','').unbind('click');
  } else {
    // Listenansicht
    $.get('tpl-liste.txt', function(template) {
      $('#dateien').empty();
      $('#dateien').html(Mustache.render(template, fl));
      $('.datei-zeile').click(fm_dateiwahl);
    });
    $('.figure').attr('onclick','').unbind('click');
  }
  */
}

function fm_menu_datei_speichern(callback) {
  //var fname = $('.datei-gewaehlt').text();
  var fname = openFileName;
  if(fname !== undefined && fname !== '') {
    fm_save_file(fname, 'saveTextFile', callback);
  } else {
    fm_menu_datei_speichern_unter(callback);
  }
}


function fm_menu_datei_speichern_unter(callback) {  
  $('#modal_ok').click(function() {
    $('#modal_ok').attr('onclick','').unbind('click');
    // hier speichern
    fm_save_file($('#dateiname').val(), 'saveTextFileAs', callback);
  });
  $('#saveModalTitle').text('Datei speichern');
  $('#dialogfrage').text("Dateiname?");
  
  var fname = $('.datei-gewaehlt').text();
  if(fname !== undefined) {
    $('#dateiname').val(fname);
  } else {
    $('#dateiname').val('');
  }
  $('#dateiname').attr('placeholder', 'Dateiname');
  $('#saveModal').modal({
    keyboard: false,
    show: true
  });
}



/* ---- codemirror editor handling -------- */

/*
function htmlDecode(value){ 
  return $('<div/>').html(value).text(); 
}
*/

function fm_code_edit(content, m) {
  cm = CodeMirror.fromTextArea(document.getElementById("editspace"), {
    lineNumbers: true,
    lineWrapping: true,
    gutters: ["CodeMirror-linenumbers", "breakpoints"],
    mode: m,
    viewportMargin : Infinity,
    tabSize: 2,
    extraKeys: {
        "F9": function(cm) {
        cm.setOption("fullScreen", !cm.getOption("fullScreen"));
      },
        "Esc": function(cm) {
        if (cm.getOption("fullScreen")) cm.setOption("fullScreen", false);
      },
        ".": function(cm) {
        console.log('dot pressed: perhaps look up class or method name');
        /*
         * Hier kann man eine Funktion ausloesen, die fuer das 
         * Wort vor dem Punkt (Name der Klasse) eine Liste mit 
         * Vorschlaegen fuer Methodennamen einblendet.
         */
        
        /*
         * CodeMirror.Pass laesst das Zeichen zum Editorinhalt durch, 
         * verhindert aber das Ausloesen von 'keyHandled'
         */
        return CodeMirror.Pass; 
      }
    }
  });
  //cm.setValue(htmlDecode(content));
  //cm.setValue(content);
  cm.setValue(unescapeHtml(content));
  cm.getDoc().markClean();
  cm.on("gutterClick", function(theEditor, lineNumber) {
    var info = theEditor.lineInfo(lineNumber);
    //--lineNumber;
    //console.log(info.gutterMarkers.breakpoints.message);
    //var marker = info.gutterMarkers.breakpoints;
    //$(marker).tooltip('toggle');
  });
  /*
  cm.on("keyHandled", function(theEditor, keyName, event){
    console.log('cm.keyHandled keyName: ' + keyName + ', event.type: ' + event.type);    
  });
  */
}

function makeMarker(msg) {
  var marker = document.createElement("div");
  marker.style.color = "#822";
  marker.innerHTML = "●";
  //marker.message = msg;
  $(marker).tooltip({
    placement: 'right',
    title: msg,
    offset: '0 -30'
  });
  return marker;
}

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

function fm_serialise(obj) {
  return '{"' + obj.constructor.name + '":' + JSON.stringify(obj) + '}';
}

function escapeHtml(text) {
  text = text.replace(/\u228/g,'&auml;');
  text = text.replace(/\u246/g,'&ouml;');
  text = text.replace(/\u252/g,'&uuml;');
  text = text.replace(/\u196/g,'&Auml;');
  text = text.replace(/\u214/g,'&Ouml;');
  text = text.replace(/\u220/g,'&Uuml;');
  text = text.replace(/\u223/g,'&szlig;');
  text = text.replace(/\u26/g,'&amp;');
  return text;
}

function unescapeHtml(text) {
  text = text.replace(/&auml;/g, String.fromCharCode(228));
  text = text.replace(/&ouml;/g, String.fromCharCode(246));
  text = text.replace(/&uuml;/g, String.fromCharCode(252));
  text = text.replace(/&Auml;/g, String.fromCharCode(196));
  text = text.replace(/&Ouml;/g, String.fromCharCode(214));
  text = text.replace(/&Uuml;/g, String.fromCharCode(220));
  text = text.replace(/&szlig;/g, String.fromCharCode(223));
  text = text.replace(/&amp;/g, String.fromCharCode(26));
  return text;
}