JScript Panel v2.7.5 (id:1051102)
JavaScript runtime error:
'_' is undefined
File: <main>
Line: 100, Col: 5

// ==PREPROCESSOR==
// @import "%fb2k_component_path%samples\complete\js\lodash.min.js"
// @import "%fb2k_component_path%docs\flags.txt"
// @import "%fb2k_component_path%docs\helpers.txt"
// ==/PREPROCESSOR==

function get_tag_list() {
  var items = fb.GetLibraryItems();
  var tags = [];
  for (var i = 0; i < items.Count; i++) {
    var f = items.Item(i).GetFileInfo();
    for (var j = 0; j < f.MetaCount; j++) {
      var tag = f.MetaName(j).toLowerCase();
      if (!_.includes(tags, tag))
        tags.push(tag);
    }
    f.Dispose();
  }
  items.Dispose();
  return tags;
}

ButtonStates = {
  normal: 0,
  hover: 1,
  down: 2,
  hide: 3
}

var g_theme = window.CreateThemeManager("Button");
var g_font = gdi.Font("Segoe UI", 12);

function SimpleButton(x, y, w, h, text, fonClick, state) {
  this.state = state ? state : ButtonStates.normal;
  this.x = x;
  this.y = y;
  this.w = w;
  this.h = h;
  this.text = text;
  this.fonClick = fonClick;

  this.containXY = function (x, y) {
    return (this.x <= x) && (x <= this.x + this.w) && (this.y <= y) && (y <= this.y + this.h);
  }

  this.changeState = function (state) {
    var old = this.state;
    this.state = state;
    return old;
  }

  this.draw = function (gr) {
    if (this.state == ButtonStates.hide) return;

    switch (this.state)
    {
      case ButtonStates.normal:
      g_theme.SetPartAndStateId(1, 1);
      break;

      case ButtonStates.hover:
      g_theme.SetPartAndStateId(1, 2);
      break;

      case ButtonStates.down:
      g_theme.SetPartAndStateId(1, 3);
      break;

      case ButtonStates.hide:
      return;
    }

    g_theme.DrawThemeBackground(gr, this.x, this.y, this.w, this.h);
    // RGB function is defined in docs\helpers.txt
    // DT_* are defined in docs\flags.txt
    gr.GdiDrawText(this.text, g_font, RGB(0,0,0), this.x, this.y, this.w, this.h, DT_CENTER| DT_VCENTER | DT_CALCRECT | DT_NOPREFIX);
  }

  this.onClick = function () {
    this.fonClick && this.fonClick();
  }
}

function drawAllButtons(gr) {
  for (var i in $buttons) {
    $buttons[i].draw(gr);
  }
}

function chooseButton(x, y) {
  for (var i in $buttons) {
    if ($buttons[i].containXY(x, y) && $buttons[i].state != ButtonStates.hide) return $buttons[i];
  }

  return null;
}

$buttons = {
  first_btn: new SimpleButton(5, 5, 150, 26, "Find Tag Whitespaces", function () {
    var leftquery = _.map(get_tag_list(), function (item) {
      return '"$left(%' + item + '%,1)" IS " "';
    }).join(" OR ");
    fb.ShowLibrarySearchUI(leftquery);
    var rightquery = _.map(get_tag_list(), function (item) {
      return '"$right(%' + item + '%,1)" IS " "';
    }).join(" OR ");
    fb.ShowLibrarySearchUI(rightquery);

    var whitespaces = _.map(get_tag_list(), function (item) {
      return '"%' + item + '%" HAS "  "';
    }).join(" OR ");
    fb.ShowLibrarySearchUI(whitespaces);

  })
}

var cur_btn = null;
var g_down = false;

function on_paint(gr) {
  gr.FillSolidRect(0, 0, window.Width, window.Height, utils.GetSysColour(15));
  drawAllButtons(gr);
}

function on_mouse_move(x, y) {
  var old = cur_btn;
  cur_btn = chooseButton(x, y);

  if (old == cur_btn) {
    if (g_down) return;
  } else if (g_down && cur_btn && cur_btn.state != ButtonStates.down) {
    cur_btn.changeState(ButtonStates.down);
    window.Repaint();
    return;
  }

  old && old.changeState(ButtonStates.normal);
  cur_btn && cur_btn.changeState(ButtonStates.hover);
  window.Repaint();
}

function on_mouse_leave() {
  g_down = false;

  if (cur_btn) {
    cur_btn.changeState(ButtonStates.normal);
    window.Repaint();
  }
}

function on_mouse_lbtn_down(x, y) {
  g_down = true;

  if (cur_btn) {
    cur_btn.changeState(ButtonStates.down);
    window.Repaint();
  }
}

function on_mouse_lbtn_up(x, y) {
  g_down = false;

  if (cur_btn) {
    cur_btn.onClick();
    cur_btn.changeState(ButtonStates.hover);
    window.Repaint();
  }
}

// @import "%fb2k_component_path%samples\complete\js\lodash.min.js"

// @import "%fb2k_component_path%samples\js\lodash.min.js"

and there's always Properties>Clean up