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srecord noeq G22DatabasesPanel(G22Utils g22utils) {
  delegate GazelleDB to G22Utils.
  
  JObjectTable<GazelleDB> table;
  FileWatchService dirWatcher;
  ReliableSingleThread rstUpdate = new(r _updateTable);
  
  cachedVisualize {
    table = swing(-> new JObjectTable);
    table.defaultAction(runnableToIVF1(rThread openDB));
    table.itemToMap = db -> litorderedmap(
      "Name" := db.name,
      "Directory" := f2s(db.dir),
      "Loaded" := db.loaded() ? "Yes" : "No"
    );

    var tbl = table.visualize();
    bindToComponent(tbl, -> {
      dirWatcher = new FileWatchService;
      dirWatcher.addNonRecursiveListener(g22utils.databasesMotherDir(), dir ->
        rstUpdate!);
      g22utils.masterStuff.onLoadedDBsChange(rstUpdate);
      rstUpdate!;
    }, -> {
      g22utils.masterStuff.removeLoadedDBsChangeListener(rstUpdate);
      dispose dirWatcher;
    });

    ret withTopAndBottomMargin(jCenteredRaisedSection("Gazelle Projects",
      northAndCenterWithMargins(
        jline(
          toolTip("Create a new Gazelle project", jbutton("New Gazelle project...", rThread newDatabase))
        ),
        centerAndEastWithMargin(
          tbl,
          vstackWithSpacing_fixed(
            tableDependentButton(table.table, "Open project", rThread openDB),
            tableDependentButton(table.table, "Close project", rThread closeDB),
            tableDependentButton(table.table, "Delete project (TODO)"),
            tableDependentButton(table.table, "Browse files", rThread browse)
          ))));
  }
  
  void newDatabase {
    temp g22utils.enter();
    
    var tf = jtextfield();
    var lblDir = jlabel(" ");
    var lblStatus = jlabel(" ");
    var button = jbutton("Create project", r {
      temp g22utils.enter();
      
      S name = trim(tf.getText());
      File dir = newFile(g22utils.databasesMotherDir(), name);
      createEmptyConceptsFileInDir(dir);
      disposeFrame(tf);
    });
    disableButton(button);
    onEnter(tf, button);
    
    onChange(tf, r {
      S name = trim(tf.getText());
      bool ok;
      S status = " ", path = " ";
      if (isValidFileName(name)) {
        File dir = newFile(g22utils.databasesMotherDir(), name);
        path = f2s(dir);
        if (dirExists(dir))
          status = "A project with that name exists";
        else
          ok = true;
      } else if (!empty(name))
        status = "Project name must be a valid file name";
      setEnabled(button, ok);
      setText(lblStatus, status);
      setText(lblDir, path);
    });
    
    showForm_makeFrame("New Gazelle Project",
      vstackWithSpacing(
        withLabel("Name for new project", tf),
        lblDir,
        lblStatus,
        button);
  }

  void _updateTable { table.setData_force(g22utils.gazelleDBs()); }
  
  void browse { desktopOpen(table.selected().dir); }
  void openDB { g22utils.masterStuff().openDatabase(table.selected().dir); }
  void closeDB { g22utils.masterStuff().closeDatabase(table.selected().dir); }
}