New widget class FComboBox to provide a dropdown list with an input field

.travis.yml

@@ -50,7 +50,11 @@ matrix:
       - TEST="Coverity Scan"
     addons:
       apt:
+        sources:
+          - ubuntu-toolchain-r-test
         packages:
+          - ca-certificates
+          - gcc
           - g++
           - gpm
           - libgpm-dev

ChangeLog

@@ -1,3 +1,7 @@
+2019-12-16  Markus Gans  <guru.mail@muenster.de>
+	* New widget class FComboBox to provide a dropdown list 
+	  with an input field
+
 2019-11-17  Markus Gans  <guru.mail@muenster.de>
 	* Revision of FString number input stream
 

README.md

@@ -205,6 +205,9 @@ Class digramm
                                       │    ┌───────────┐
                                       ├────┤ FTextView │
                                       │    └───────────┘
+                                      │    ┌───────────┐1    1┌──────────────────┐
+                                      ├────┤ FComboBox ├------┤ FDropDownListBox │
+                                      │    └───────────┘      └──────────────────┘
  ┌─────────────┐1                     │    ┌──────────┐1     *┌──────────────┐
  │ FTermBuffer ├----------------------├────┤ FListBox ├-------┤ FListBoxItem │
  └─────────────┘                      │    └──────────┘       └──────────────┘

doc/class-diagram.txt

@@ -71,6 +71,9 @@
                                       │    ┌───────────┐
                                       ├────┤ FTextView │
                                       │    └───────────┘
+                                      │    ┌───────────┐1    1┌──────────────────┐
+                                      ├────┤ FComboBox ├------┤ FDropDownListBox │
+                                      │    └───────────┘      └──────────────────┘
  ┌─────────────┐1                     │    ┌──────────┐1     *┌──────────────┐
  │ FTermBuffer ├----------------------├────┤ FListBox ├-------┤ FListBoxItem │
  └─────────────┘                      │    └──────────┘       └──────────────┘

doc/first-steps.md

@@ -410,6 +410,9 @@ use `delCallbacks()` to remove all existing callbacks from an object.
   <dt>FScrollbar</dt>
   <dd>"change-value"</dd>
 
+  <dt>FSpinBox</dt>
+  <dd>"changed"</dd>
+
   <dt>FStatusBar</dt>
   <dd>"activate"</dd>
 
@@ -420,7 +423,7 @@ use `delCallbacks()` to remove all existing callbacks from an object.
   <dd>"clicked"<br />"toggled"</dd>
 
   <dt>FWidget</dt>
-  <dd>"destroy"</dd>
+  <dd>"destroy"<br />"focus-in"<br />"focus-out"<br />"mouse-press"<br />"mouse-release"<br />"mouse-move"<br />"mouse-wheel-down"<br />"mouse-wheel-up"</dd>
 </dl>
 
 &nbsp;

examples/background-color.cpp

@@ -20,7 +20,8 @@
 * <http://www.gnu.org/licenses/>.                                      *
 ***********************************************************************/
 
-#include <map>
+#include <tuple>
+#include <utility>
 #include <vector>
 
 #include <final/final.h>
@@ -36,6 +37,10 @@ using finalcut::FSize;
 class Background : public finalcut::FDialog
 {
   public:
+    // Typedef
+    typedef std::tuple<uChar,uChar,uChar>  RGB;
+
+    // Constructors
     explicit Background (finalcut::FWidget* = nullptr);
 
     // Disable copy constructor
@@ -50,12 +55,35 @@ class Background : public finalcut::FDialog
   private:
     // Callback method
     void cb_changed (finalcut::FWidget*, FDataPtr);
+    void cb_choice (finalcut::FWidget*, FDataPtr);
 
     // Data members
+    finalcut::FComboBox color_choice{this};
     finalcut::FSpinBox red{this};
     finalcut::FSpinBox green{this};
     finalcut::FSpinBox blue{this};
     finalcut::FButton quit{"&Quit", this};
+    std::vector<std::pair<finalcut::FString, RGB>> color_list
+    {
+      { "Light blue"    , std::make_tuple(0x80, 0xa4, 0xec) },
+      { "Vivid blue"    , std::make_tuple(0x37, 0x97, 0xfd) },
+      { "Bright blue"   , std::make_tuple(0x3c, 0x85, 0xd2) },
+      { "Strong blue"   , std::make_tuple(0x32, 0x64, 0x9f) },
+      { "Light cyan"    , std::make_tuple(0x6c, 0xfe, 0xfe) },
+      { "Vivid cyan"    , std::make_tuple(0x0b, 0xdd, 0xd4) },
+      { "Soft cyan"     , std::make_tuple(0x49, 0xa8, 0xac) },
+      { "Light green"   , std::make_tuple(0x81, 0xdf, 0xbb) },
+      { "Vivid green"   , std::make_tuple(0x5c, 0x9e, 0x4a) },
+      { "Bright green"  , std::make_tuple(0x0f, 0xba, 0x78) },
+      { "Strong green"  , std::make_tuple(0x03, 0x8f, 0x68) },
+      { "Mint green"    , std::make_tuple(0x4a, 0xfd, 0x91) },
+      { "Green"         , std::make_tuple(0x6b, 0xe8, 0x1b) },
+      { "Dark green"    , std::make_tuple(0x01, 0x65, 0x05) },
+      { "Dark sea green", std::make_tuple(0x7d, 0xb6, 0x96) },
+      { "Bright purple" , std::make_tuple(0x83, 0x76, 0xa2) },
+      { "Taupe"         , std::make_tuple(0xa6, 0x8c, 0x99) },
+      { "Silver"        , std::make_tuple(0xc1, 0xc1, 0xcb) }
+    };
 };
 
 //----------------------------------------------------------------------
@@ -64,36 +92,48 @@ Background::Background (finalcut::FWidget* parent)
 {
   // Dialog settings
   setText ("Background color palette");
-  setGeometry (FPoint(25, 5), FSize(32, 9));
+  setGeometry (FPoint(25, 5), FSize(32, 12));
+
+  // Combobox
+  color_choice.setGeometry (FPoint(2, 2), FSize(18, 1));
+  color_choice.setLabelOrientation (finalcut::FLineEdit::label_above);
+  color_choice.setLabelText ("Color choice");
+  color_choice.unsetEditable();
+
+  for (auto& c : color_list)
+  {
+    FDataPtr data_ptr = reinterpret_cast<FDataPtr>(&c.second);
+    finalcut::FListBoxItem item (c.first, data_ptr);
+    color_choice.insert(item);
+  }
 
   // Spin boxes
-  red.setGeometry (FPoint(2, 2), FSize(7, 1));
+  red.setGeometry (FPoint(2, 5), FSize(7, 1));
   red.setLabelOrientation (finalcut::FLineEdit::label_above);
   red.setLabelText ("Red");
   red.setRange (0, 255);
   red.setValue (0x80);
 
-  green.setGeometry (FPoint(12, 2), FSize(7, 1));
+  green.setGeometry (FPoint(12, 5), FSize(7, 1));
   green.setLabelOrientation (finalcut::FLineEdit::label_above);
   green.setLabelText ("Green");
   green.setRange (0, 255);
   green.setValue (0xa4);
 
-  blue.setGeometry (FPoint(22, 2), FSize(7, 1));
+  blue.setGeometry (FPoint(22, 5), FSize(7, 1));
   blue.setLabelOrientation (finalcut::FLineEdit::label_above);
   blue.setLabelText ("Blue");
   blue.setRange (0, 255);
   blue.setValue (0xec);
 
   // Set the initial palette values
-  const auto& wc = getFWidgetColors();
+  finalcut::FTerm::setPalette ( finalcut::fc::LightMagenta
-  finalcut::FTerm::setPalette ( wc.term_bg
                               , int(red.getValue())
                               , int(green.getValue())
                               , int(blue.getValue()) );
 
   // Quit button
-  quit.setGeometry(FPoint(19, 5), FSize(10, 1));
+  quit.setGeometry(FPoint(19, 8), FSize(10, 1));
 
   // Add some function callbacks
   quit.addCallback
@@ -119,6 +159,18 @@ Background::Background (finalcut::FWidget* parent)
     "changed",
     F_METHOD_CALLBACK (this, &Background::cb_changed)
   );
+
+  color_choice.addCallback
+  (
+    "clicked",
+    F_METHOD_CALLBACK (this, &Background::cb_choice)
+  );
+
+  color_choice.addCallback
+  (
+    "row-changed",
+    F_METHOD_CALLBACK (this, &Background::cb_choice)
+  );
 }
 
 //----------------------------------------------------------------------
@@ -128,8 +180,25 @@ Background::~Background()  // destructor
 //----------------------------------------------------------------------
 void Background::cb_changed (finalcut::FWidget*, FDataPtr)
 {
-  const auto& wc = getFWidgetColors();
+  finalcut::FTerm::setPalette ( finalcut::fc::LightMagenta
-  finalcut::FTerm::setPalette ( wc.term_bg
+                              , int(red.getValue())
+                              , int(green.getValue())
+                              , int(blue.getValue()) );
+  redraw();
+  updateTerminal();
+}
+
+//----------------------------------------------------------------------
+void Background::cb_choice (finalcut::FWidget*, FDataPtr)
+{
+  uChar r{}, g{}, b{};
+  FDataPtr data_ptr = color_choice.getItemData();
+  RGB* rgb = reinterpret_cast<RGB*>(data_ptr);
+  std::tie(r, g, b) = *rgb;
+  red.setValue(r);
+  green.setValue(g);
+  blue.setValue(b);
+  finalcut::FTerm::setPalette ( finalcut::fc::LightMagenta
                               , int(red.getValue())
                               , int(green.getValue())
                               , int(blue.getValue()) );
@@ -145,6 +214,7 @@ void Background::cb_changed (finalcut::FWidget*, FDataPtr)
 int main (int argc, char* argv[])
 {
   finalcut::FApplication app(argc, argv);
+  app.setBackgroundColor(finalcut::fc::LightMagenta);
   Background dialog(&app);
   app.setMainWidget(&dialog);
   dialog.show();

examples/opti-move.cpp

@@ -86,7 +86,7 @@ void term_boundaries (int& x, int& y)
 //----------------------------------------------------------------------
 void move (int xold, int yold, int xnew, int ynew)
 {
-  // prints the cursor move escape sequence
+  // Prints the cursor move escape sequence
   finalcut::FString buffer{}, sequence{}, from{}, to{}, byte{};
   const std::string ctrl_character[] =
   {
@@ -100,7 +100,7 @@ void move (int xold, int yold, int xnew, int ynew)
   term_boundaries(xold, yold);
   term_boundaries(xnew, ynew);
 
-  // get the move string
+  // Get the move string
   buffer = finalcut::FTerm::moveCursorString (xold, yold, xnew, ynew);
 
   for (auto&& ch : buffer)

examples/transparent.cpp

@@ -267,7 +267,7 @@ void MainWindow::onTimer (finalcut::FTimerEvent*)
   line1 = line1.right(length - 1) + first_Char[0];
   line2 = line2.right(length - 1) + first_Char[1];
   redraw();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------

examples/ui.cpp

@@ -136,7 +136,7 @@ void ProgressDialog::onTimer (finalcut::FTimerEvent*)
 {
   auto p = progressBar.getPercentage();
   progressBar.setPercentage(++p);
-  flushOutputBuffer();
+  flush();
 
   if ( p != 100 )
     return;
@@ -154,7 +154,7 @@ void ProgressDialog::onTimer (finalcut::FTimerEvent*)
     getStatusBar()->drawMessage();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------

src/Makefile.am

@@ -45,6 +45,7 @@ libfinal_la_SOURCES = \
 	fkey_map.cpp \
 	fcharmap.cpp \
 	fspinbox.cpp \
+	fcombobox.cpp \
 	fstartoptions.cpp \
 	fstatusbar.cpp \
 	ftermcap.cpp \
@@ -119,6 +120,7 @@ finalcutinclude_HEADERS = \
 	include/final/fscrollbar.h \
 	include/final/fscrollview.h \
 	include/final/fspinbox.h \
+	include/final/fcombobox.h \
 	include/final/fstartoptions.h \
 	include/final/fstatusbar.h \
 	include/final/fstring.h \

src/Makefile.clang

@@ -44,6 +44,7 @@ INCLUDE_HEADERS = \
 	fscrollbar.h \
 	fscrollview.h \
 	fspinbox.h \
+	fcombobox.h \
 	fstatusbar.h \
 	fstring.h \
 	fmouse.h \
@@ -106,6 +107,7 @@ OBJS = \
 	fwindow.o \
 	fscrollview.o \
 	fspinbox.o \
+	fcombobox.o \
 	fmessagebox.o \
 	ftooltip.o \
 	ffiledialog.o \

src/Makefile.gcc

@@ -44,6 +44,7 @@ INCLUDE_HEADERS = \
 	fscrollbar.h \
 	fscrollview.h \
 	fspinbox.h \
+	fcombobox.h \
 	fstatusbar.h \
 	fstring.h \
 	fmouse.h \
@@ -106,6 +107,7 @@ OBJS = \
 	fwindow.o \
 	fscrollview.o \
 	fspinbox.o \
+	fcombobox.o \
 	fmessagebox.o \
 	ftooltip.o \
 	ffiledialog.o \

src/fapplication.cpp

@@ -669,7 +669,7 @@ void FApplication::processKeyboardEvent()
     return;
 
   findKeyboardWidget();
-  flushOutputBuffer();
+  flush();
   keyboard->clearKeyBufferOnTimeout();
 
   if ( isKeyPressed() )
@@ -815,46 +815,15 @@ void FApplication::unsetMoveSizeMode()
 }
 
 //----------------------------------------------------------------------
-void FApplication::closeOpenMenu()
+void FApplication::closeDropDown()
 {
   // Close the open menu
 
-  auto openmenu = FWidget::getOpenMenu();
+  if ( mouse && mouse->isMoved() )
-  auto menu = static_cast<FMenu*>(openmenu);
-
-  if ( ! openmenu || ( mouse && mouse->isMoved()) )
     return;
 
-  if ( mouse )
-  {
   const auto& mouse_position = mouse->getPos();
-
+  finalcut::closeDropDown (this, mouse_position);
-    if ( menu->containsMenuStructure(mouse_position) )
-      return;
-  }
-
-  bool is_window_menu{false};
-  auto super = menu->getSuperMenu();
-
-  if ( super && menu->isWindowsMenu(super) )
-    is_window_menu = true;
-  else
-    is_window_menu = false;
-
-  menu->unselectItem();
-  menu->hide();
-  menu->hideSubMenus();
-  menu->hideSuperMenus();
-
-  // No widget was been clicked and the menu is no dialog menu
-  if ( ! (FWidget::getClickedWidget() || is_window_menu) )
-    FWindow::switchToPrevWindow(this);
-
-  if ( FWidget::getStatusBar() )
-    FWidget::getStatusBar()->drawMessage();
-
-  updateTerminal();
-  flushOutputBuffer();
 }
 
 //----------------------------------------------------------------------
@@ -889,7 +858,7 @@ void FApplication::unselectMenubarItems()
       FWidget::getStatusBar()->drawMessage();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -1124,7 +1093,7 @@ void FApplication::processMouseEvent()
 
   determineClickedWidget();
   unsetMoveSizeMode();
-  closeOpenMenu();
+  closeDropDown();
   unselectMenubarItems();
   sendMouseEvent();
 
@@ -1135,14 +1104,14 @@ void FApplication::processMouseEvent()
 //----------------------------------------------------------------------
 void FApplication::processResizeEvent()
 {
-  if ( hasChangedTermSize() )
+  if ( ! hasChangedTermSize() )
-  {
+    return;
+
   FResizeEvent r_ev(fc::Resize_Event);
   sendEvent(app_object, &r_ev);
 
   if ( r_ev.isAccepted() )
     changeTermSizeFinished();
-  }
 }
 
 //----------------------------------------------------------------------

src/fbuttongroup.cpp

@@ -364,7 +364,7 @@ void FButtonGroup::onFocusIn (FFocusEvent* in_ev)
   {
     getStatusBar()->drawMessage();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -539,7 +539,7 @@ void FButtonGroup::directFocus()
   {
     getStatusBar()->drawMessage();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 

src/fcombobox.cpp

@@ -0,0 +1,733 @@
+/***********************************************************************
+* fcombobox.cpp - Widget FComboBox                                     *
+*                                                                      *
+* This file is part of the Final Cut widget toolkit                    *
+*                                                                      *
+* Copyright 2019 Markus Gans                                           *
+*                                                                      *
+* The Final Cut is free software; you can redistribute it and/or       *
+* modify it under the terms of the GNU Lesser General Public License   *
+* as published by the Free Software Foundation; either version 3 of    *
+* the License, or (at your option) any later version.                  *
+*                                                                      *
+* The Final Cut 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 Lesser General Public License for more details.                  *
+*                                                                      *
+* You should have received a copy of the GNU Lesser General Public     *
+* License along with this program.  If not, see                        *
+* <http://www.gnu.org/licenses/>.                                      *
+***********************************************************************/
+
+#include "final/fapplication.h"
+#include "final/fcolorpair.h"
+#include "final/fcombobox.h"
+#include "final/fevent.h"
+#include "final/flabel.h"
+#include "final/flineedit.h"
+#include "final/flistbox.h"
+#include "final/fmouse.h"
+#include "final/fpoint.h"
+#include "final/fsize.h"
+#include "final/fstatusbar.h"
+#include "final/fwidgetcolors.h"
+
+namespace finalcut
+{
+
+//----------------------------------------------------------------------
+// class FDropDownListBox
+//----------------------------------------------------------------------
+
+// constructor and destructor
+//----------------------------------------------------------------------
+FDropDownListBox::FDropDownListBox (FWidget* parent)
+  : FWindow(parent)
+{
+  init();
+}
+
+//----------------------------------------------------------------------
+FDropDownListBox::~FDropDownListBox()  // destructor
+{
+  auto fapp = FApplication::getApplicationObject();
+
+  if ( fapp->isQuit() )
+    return;
+
+  FWindow* parent_win{nullptr};
+
+  if ( auto parent = getParentWidget() )
+    parent_win = getWindowWidget(parent);
+
+  if ( parent_win )
+    setActiveWindow (parent_win);
+  else
+    switchToPrevWindow(this);
+}
+
+//----------------------------------------------------------------------
+void FDropDownListBox::setGeometry ( const FPoint& pos, const FSize& size
+                                   , bool adjust )
+{
+  FWindow::setGeometry (pos, size, adjust);
+
+  if ( isNewFont() )
+  {
+    FSize new_size(size);
+    new_size.scaleBy(-1, 0);
+    list.setGeometry (FPoint(2, 1), new_size, adjust);
+  }
+  else
+    list.setGeometry (FPoint(1, 1), size, adjust);
+}
+
+//----------------------------------------------------------------------
+void FDropDownListBox::show()
+{
+  if ( ! isVisible() )
+    return;
+
+  FWindow::show();
+}
+
+//----------------------------------------------------------------------
+void FDropDownListBox::hide()
+{
+  if ( ! isVisible() )
+    return;
+
+  FWindow::hide();
+  setOpenMenu(nullptr);
+  const auto& t_geometry = getTermGeometryWithShadow();
+  restoreVTerm (t_geometry);
+  updateTerminal();
+  flush();
+}
+
+//----------------------------------------------------------------------
+void FDropDownListBox::onKeyPress (FKeyEvent* ev)
+{
+  switch ( ev->key() )
+  {
+    case fc::Fkey_escape:
+    case fc::Fkey_escape_mintty:
+      hide();
+      break;
+
+    default:
+      break;
+  }
+}
+
+// private methods of FDropDownListBox
+//----------------------------------------------------------------------
+void FDropDownListBox::init()
+{
+  setAlwaysOnTop();
+  ignorePadding();
+  setShadow();
+  // initialize geometry values
+  setGeometry (FPoint(1, 1), FSize(3, 3), false);
+  setMinimumSize (FSize(3, 3));
+  hide();
+  list.setGeometry (FPoint(1, 1), FSize(3, 3), false);
+}
+
+//----------------------------------------------------------------------
+void FDropDownListBox::draw()
+{
+  // Fill the background
+  const auto& wc = getFWidgetColors();
+  setColor (wc.menu_active_fg, wc.menu_active_bg);
+
+  if ( isMonochron() )
+    setReverse(true);
+
+  clearArea();
+  drawShadow();
+
+  if ( isMonochron() )
+    setReverse(false);
+}
+
+//----------------------------------------------------------------------
+void FDropDownListBox::drawShadow()
+{
+  const auto& wc = getFWidgetColors();
+  finalcut::drawShadow(this);
+  setColor (wc.shadow_fg, wc.shadow_bg);
+  print() << FPoint(int(getWidth()) + 1, 1) << fc::FullBlock;  // █
+}
+
+//----------------------------------------------------------------------
+bool FDropDownListBox::containsWidget (const FPoint& p)
+{
+  // Check mouse click position for item, menu and all sub menus
+
+  FWidget* parent = getParentWidget();
+
+  if ( getTermGeometry().contains(p) )
+    return true;
+  else if ( parent && parent->isInstanceOf("FComboBox") )
+    return static_cast<FComboBox*>(parent)->getTermGeometry().contains(p);
+  else
+    return false;
+}
+
+
+//----------------------------------------------------------------------
+// class FComboBox
+//----------------------------------------------------------------------
+
+// constructors and destructor
+//----------------------------------------------------------------------
+FComboBox::FComboBox (FWidget* parent)
+  : FWidget(parent)
+{
+  init();
+}
+
+//----------------------------------------------------------------------
+FComboBox::~FComboBox()  // destructor
+{ }
+
+
+// public methods of FComboBox
+//----------------------------------------------------------------------
+void FComboBox::setGeometry ( const FPoint& pos, const FSize& size
+                            , bool adjust )
+{
+  FWidget::setGeometry (pos, size, adjust);
+  FSize input_field_size(size);
+  input_field_size.scaleBy(-(1 + nf), 0);
+  input_field.setGeometry (FPoint(1, 1), input_field_size, adjust);
+}
+
+//----------------------------------------------------------------------
+bool FComboBox::setEnable (bool enable)
+{
+  FWidget::setEnable(enable);
+  input_field.setEnable(enable);
+  return enable;
+}
+
+//----------------------------------------------------------------------
+bool FComboBox::setFocus (bool enable)
+{
+  FWidget::setFocus(enable);
+  input_field.setFocus(enable);
+  return enable;
+}
+
+//----------------------------------------------------------------------
+bool FComboBox::setShadow (bool enable)
+{
+  if ( enable
+    && getEncoding() != fc::VT100
+    && getEncoding() != fc::ASCII )
+  {
+    setFlags().shadow = true;
+    setShadowSize(FSize(1, 1));
+  }
+  else
+  {
+    setFlags().shadow = false;
+    setShadowSize(FSize(0, 0));
+  }
+
+  return getFlags().shadow;
+}
+
+//----------------------------------------------------------------------
+bool FComboBox::setEditable (bool enable)
+{
+  if ( is_editable == enable )
+    return is_editable;
+
+  if ( enable )
+    unsetVisibleCursor();
+  else
+    setVisibleCursor();
+
+  input_field.setReadOnly(! enable);
+  return (is_editable = enable);
+}
+
+//----------------------------------------------------------------------
+void FComboBox::setMaxVisibleItems (std::size_t items)
+{
+  // Sets the maximum height of the combo box in elements
+
+  if ( items > getCount() )
+    max_items = getCount();
+  else
+    max_items = items;
+}
+
+//----------------------------------------------------------------------
+void FComboBox::insert (FListBoxItem listItem)
+{
+  list_window.list.insert(listItem);
+
+  if ( getCount() == 1 )
+    input_field = list_window.list.getItem(1).getText();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::remove (std::size_t item)
+{
+  list_window.list.remove(item);
+
+  if ( ! list_window.isEmpty() )
+  {
+    std::size_t i = list_window.list.currentItem();
+    input_field = list_window.list.getItem(i).getText();
+    input_field.redraw();
+  }
+
+  if ( list_window.isShown() )
+  {
+    // Adjusting the size of the drop-down list
+    hideDropDown();
+    showDropDown();
+  }
+}
+
+//----------------------------------------------------------------------
+void FComboBox::clear()
+{
+  if ( list_window.isShown() )
+    hideDropDown();
+
+  list_window.list.clear();
+  input_field.clear();
+  redraw();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::showDropDown()
+{
+  if ( list_window.isEmpty() )
+    return;
+
+  static constexpr std::size_t border = 2;  // Size of the top and bottom border
+  setOpenMenu(&list_window);
+  FPoint p(getTermPos());
+  p.move(0 - int(nf), 1);
+  setClickedWidget(&list_window.list);
+  std::size_t w = getWidth();
+  std::size_t h = getCount();
+
+  if ( h > max_items)
+    h = max_items;
+
+  list_window.setGeometry(p, FSize(w + std::size_t(nf), h + border));
+  list_window.show();
+  list_window.list.setFocus();
+  list_window.redraw();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::hideDropDown()
+{
+  if ( list_window.isHidden() )
+     return;
+
+  list_window.hide();
+  input_field.setFocus();
+  input_field.redraw();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onKeyPress (FKeyEvent* ev)
+{
+  if ( ! isEnabled() )
+    return;
+
+  switch ( ev->key() )
+  {
+    case fc::Fkey_tab:
+      focusNextChild();
+      break;
+
+    case fc::Fkey_btab:
+      focusPrevChild();
+      break;
+
+    case fc::Fkey_up:
+      onePosUp();
+      ev->accept();
+      break;
+
+    case fc::Fkey_down:
+      onePosDown();
+      ev->accept();
+      break;
+
+    case fc::Fmkey_up:
+    case fc::Fckey_up:
+      hideDropDown();
+      ev->accept();
+      break;
+
+    case fc::Fkey_f4:
+    case fc::Fmkey_down:
+    case fc::Fckey_down:
+      showDropDown();
+      ev->accept();
+      break;
+
+    default:
+      break;
+  }
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onMouseDown (FMouseEvent* ev)
+{
+  if ( ev->getButton() != fc::LeftButton )
+    return;
+
+  if ( ! hasFocus() )
+  {
+    auto focused_widget = getFocusWidget();
+    setFocus();
+
+    if ( focused_widget )
+      focused_widget->redraw();
+
+    redraw();
+
+    if ( getStatusBar() )
+      getStatusBar()->drawMessage();
+  }
+
+  int mouse_x = ev->getX();
+  int mouse_y = ev->getY();
+
+  if ( mouse_x >= int(getWidth()) - nf
+    && mouse_x <= int(getWidth()) && mouse_y == 1 )
+  {
+    if ( list_window.isHidden() )
+      showDropDown();
+    else
+      list_window.hide();
+  }
+
+  updateTerminal();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onMouseUp (FMouseEvent*)
+{ }
+
+//----------------------------------------------------------------------
+void FComboBox::onMouseMove (FMouseEvent* ev)
+{
+  if ( ev->getButton() != fc::LeftButton )
+    return;
+
+  if ( isMouseOverListWindow(ev->getTermPos()) )
+  {
+    passEventToListWindow(ev);  // Event handover to window list
+    return;
+  }
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onWheel (FWheelEvent* ev)
+{
+  switch ( ev->getWheel() )
+  {
+    case fc::WheelUp:
+      onePosUp();
+      break;
+
+    case fc::WheelDown:
+      onePosDown();
+      break;
+
+    default:
+      break;
+  }
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onFocusOut (FFocusEvent*)
+{
+  hideDropDown();
+}
+
+
+// private methods of FComboBox
+//----------------------------------------------------------------------
+bool FComboBox::isMouseOverListWindow (const FPoint& termpos)
+{
+  if ( list_window.isShown() )
+  {
+    const auto& list_geometry = list_window.getTermGeometry();
+
+    if ( list_geometry.contains(termpos) )
+      return true;
+  }
+
+  return false;
+}
+
+//----------------------------------------------------------------------
+void FComboBox::init()
+{
+  setShadow();
+  auto parent_widget = getParentWidget();
+  FLabel* label = input_field.getLabelObject();
+  label->setParent(getParent());
+  label->setForegroundColor (parent_widget->getForegroundColor());
+  label->setBackgroundColor (parent_widget->getBackgroundColor());
+  input_field.setLabelAssociatedWidget(this);
+  input_field.unsetShadow();
+  adjustSize();
+  initCallbacks();
+
+  if ( isNewFont() )
+    nf = 1;
+}
+
+//----------------------------------------------------------------------
+void FComboBox::initCallbacks()
+{
+  input_field.addCallback
+  (
+    "mouse-press",
+    F_METHOD_CALLBACK (this, &FComboBox::cb_inputFieldSwitch)
+  );
+
+  input_field.addCallback
+  (
+    "mouse-move",
+    F_METHOD_CALLBACK (this, &FComboBox::cb_inputFieldHandOver)
+  );
+
+  list_window.list.addCallback
+  (
+    "row-changed",
+    F_METHOD_CALLBACK (this, &FComboBox::cb_setInputField)
+  );
+
+  list_window.list.addCallback
+  (
+    "row-selected",
+    F_METHOD_CALLBACK (this, &FComboBox::cb_closeComboBox)
+  );
+
+  list_window.list.addCallback
+  (
+    "clicked",
+    F_METHOD_CALLBACK (this, &FComboBox::cb_closeComboBox)
+  );
+}
+
+//----------------------------------------------------------------------
+void FComboBox::draw()
+{
+  const auto& wc = getFWidgetColors();
+
+  FColorPair button_color = [&] () -> FColorPair
+  {
+    if ( list_window.isEmpty() )
+      return FColorPair ( wc.scrollbar_button_inactive_fg
+                        , wc.scrollbar_button_inactive_bg );
+    else
+      return FColorPair ( wc.scrollbar_button_fg
+                        , wc.scrollbar_button_bg );
+  }();
+
+  print() << FPoint(int(getWidth()) - nf, 1)
+          << button_color;
+
+ if ( isNewFont() )
+   print() << NF_button_arrow_down;
+ else
+   print() << fc::BlackDownPointingTriangle;  // ▼
+
+  if ( getFlags().shadow )
+    drawShadow(this);
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onePosUp()
+{
+  std::size_t i = list_window.list.currentItem();
+
+  if ( i > 1 )
+    i--;
+  else
+    return;
+
+  list_window.list.setCurrentItem(i);
+  input_field = list_window.list.getItem(i).getText();
+  input_field.redraw();
+  processChanged();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::onePosDown()
+{
+  std::size_t i = list_window.list.currentItem();
+
+  if ( i < list_window.list.getCount() )
+    i++;
+  else
+    return;
+
+  list_window.list.setCurrentItem(i);
+  input_field = list_window.list.getItem(i).getText();
+  input_field.redraw();
+  processChanged();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::passEventToListWindow (FMouseEvent*& ev)
+{
+  // Mouse event handover to list window
+
+  const auto& t = ev->getTermPos();
+  const auto& p = list_window.list.termToWidgetPos(t);
+  int b = ev->getButton();
+
+  try
+  {
+    const auto& _ev = \
+        std::make_shared<FMouseEvent>(fc::MouseMove_Event, p, t, b);
+    setClickedWidget(&list_window.list);
+    list_window.list.setFocus();
+    list_window.list.onMouseMove(_ev.get());
+  }
+  catch (const std::bad_alloc& ex)
+  {
+    std::cerr << bad_alloc_str << ex.what() << std::endl;
+  }
+}
+
+//----------------------------------------------------------------------
+void FComboBox::processClick()
+{
+  emitCallback("clicked");
+}
+
+//----------------------------------------------------------------------
+void FComboBox::processChanged()
+{
+  emitCallback("row-changed");
+}
+
+//----------------------------------------------------------------------
+void FComboBox::cb_setInputField (FWidget*, FDataPtr)
+{
+  auto& list = list_window.list;
+  std::size_t i = list.currentItem();
+  input_field = list.getItem(i).getText();
+  input_field.redraw();
+  processChanged();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::cb_closeComboBox (FWidget*, FDataPtr)
+{
+  hideDropDown();
+  processClick();
+}
+
+//----------------------------------------------------------------------
+void FComboBox::cb_inputFieldSwitch (FWidget*, FDataPtr)
+{
+  auto mouse = getFMouseControl();
+
+  if ( mouse && ! mouse->isLeftButtonPressed() )
+    return;
+
+  if ( list_window.isShown() )
+  {
+    hideDropDown();
+  }
+  else if ( ! is_editable )
+  {
+    if ( ! hasFocus() )
+    {
+      auto focused_widget = getFocusWidget();
+      setFocus();
+
+      if ( focused_widget )
+        focused_widget->redraw();
+
+      redraw();
+
+      if ( getStatusBar() )
+        getStatusBar()->drawMessage();
+    }
+
+    showDropDown();
+  }
+}
+
+//----------------------------------------------------------------------
+void FComboBox::cb_inputFieldHandOver (FWidget*, FDataPtr)
+{
+  auto mouse = getFMouseControl();
+
+  if ( ! mouse || list_window.isHidden() )
+    return;
+
+  const auto& t = mouse->getPos();
+  auto p = list_window.list.termToWidgetPos(t);
+  int b = ( mouse->isLeftButtonPressed() ) ? fc::LeftButton : 0;
+
+  try
+  {
+    const auto& _ev = \
+        std::make_shared<FMouseEvent>(fc::MouseMove_Event, p, t, b);
+    setClickedWidget(&list_window.list);
+    list_window.list.setFocus();
+    list_window.list.onMouseMove(_ev.get());
+  }
+  catch (const std::bad_alloc& ex)
+  {
+    std::cerr << bad_alloc_str << ex.what() << std::endl;
+  }
+}
+
+// non-member functions
+//----------------------------------------------------------------------
+void closeOpenComboBox()
+{
+  // Close open comboboxes
+  auto openmenu = FWidget::getOpenMenu();
+
+  if ( ! openmenu )
+    return;
+
+  if ( openmenu->isInstanceOf("FDropDownListBox") )
+  {
+    auto drop_down = static_cast<FDropDownListBox*>(openmenu);
+    drop_down->hide();
+  }
+}
+
+//----------------------------------------------------------------------
+bool closeComboBox ( FDropDownListBox* list_window
+                   , const FPoint& mouse_position )
+{
+  // Close the drop down list box
+
+  if ( ! list_window )
+    return false;
+
+  if ( list_window->containsWidget(mouse_position) )
+    return false;
+
+  list_window->hide();
+  return true;
+}
+
+}  // namespace finalcut

src/fdialog.cpp

@@ -23,6 +23,7 @@
 #include <memory>
 
 #include "final/fapplication.h"
+#include "final/fcombobox.h"
 #include "final/fdialog.h"
 #include "final/fevent.h"
 #include "final/fmenuitem.h"
@@ -1176,7 +1177,7 @@ void FDialog::leaveMenu()
     getStatusBar()->drawMessage();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -1193,6 +1194,7 @@ void FDialog::openMenu()
   }
   else
   {
+    finalcut::closeOpenComboBox();
     setOpenMenu(dialog_menu);
     FPoint pos(getPos());
     pos.y_ref()++;
@@ -1221,7 +1223,7 @@ void FDialog::selectFirstMenuItem()
     getStatusBar()->drawMessage();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------

src/flabel.cpp

@@ -198,7 +198,7 @@ void FLabel::onMouseDown (FMouseEvent* ev)
     {
       accel_widget->getStatusBar()->drawMessage();
       updateTerminal();
-      flushOutputBuffer();
+      flush();
     }
   }
 }
@@ -225,7 +225,7 @@ void FLabel::onAccel (FAccelEvent* ev)
       {
         accel_widget->getStatusBar()->drawMessage();
         updateTerminal();
-        flushOutputBuffer();
+        flush();
       }
     }
   }

src/flineedit.cpp

@@ -166,6 +166,17 @@ bool FLineEdit::setShadow (bool enable)
   return getFlags().shadow;
 }
 
+//----------------------------------------------------------------------
+bool FLineEdit::setReadOnly (bool enable)
+{
+  if ( enable )
+    unsetVisibleCursor();
+  else
+    setVisibleCursor();
+
+  return (read_only = enable);
+}
+
 //----------------------------------------------------------------------
 void FLineEdit::setText (const FString& txt)
 {
@@ -183,7 +194,9 @@ void FLineEdit::setText (const FString& txt)
 
   if ( isShown() )
   {
+    if ( ! isReadOnly() )
       cursorEnd();
+
     adjustTextOffset();
   }
 }
@@ -201,7 +214,9 @@ void FLineEdit::setMaxLength (std::size_t max)
 
   if ( isShown() )
   {
+    if ( ! isReadOnly() )
       cursorEnd();
+
     adjustTextOffset();
   }
 }
@@ -209,6 +224,9 @@ void FLineEdit::setMaxLength (std::size_t max)
 //----------------------------------------------------------------------
 void FLineEdit::setCursorPosition (std::size_t pos)
 {
+  if ( isReadOnly() )
+    return;
+
   if ( pos == 0 )
     cursor_pos = 1;
   else
@@ -260,7 +278,9 @@ void FLineEdit::hide()
 //----------------------------------------------------------------------
 void FLineEdit::clear()
 {
+  if ( ! isReadOnly() )
     cursor_pos = 0;
+
   text_offset = 0;
   char_width_offset = 0;
   text.clear();
@@ -270,6 +290,9 @@ void FLineEdit::clear()
 //----------------------------------------------------------------------
 void FLineEdit::onKeyPress (FKeyEvent* ev)
 {
+  if ( isReadOnly() )
+    return;
+
   FKey key = ev->key();
 
   switch ( key )
@@ -338,7 +361,7 @@ void FLineEdit::onKeyPress (FKeyEvent* ev)
 //----------------------------------------------------------------------
 void FLineEdit::onMouseDown (FMouseEvent* ev)
 {
-  if ( ev->getButton() != fc::LeftButton )
+  if ( ev->getButton() != fc::LeftButton || isReadOnly() )
     return;
 
   if ( ! hasFocus() )
@@ -389,7 +412,7 @@ void FLineEdit::onMouseUp (FMouseEvent*)
 //----------------------------------------------------------------------
 void FLineEdit::onMouseMove (FMouseEvent* ev)
 {
-  if ( ev->getButton() != fc::LeftButton )
+  if ( ev->getButton() != fc::LeftButton || isReadOnly() )
     return;
 
   std::size_t len = print_text.getLength();
@@ -531,7 +554,7 @@ void FLineEdit::onAccel (FAccelEvent* ev)
       {
         getStatusBar()->drawMessage();
         updateTerminal();
-        flushOutputBuffer();
+        flush();
       }
     }
   }
@@ -542,23 +565,26 @@ void FLineEdit::onAccel (FAccelEvent* ev)
 //----------------------------------------------------------------------
 void FLineEdit::onHide (FHideEvent*)
 {
-  if ( ! insert_mode )
+  if ( ! insert_mode && ! isReadOnly() )
     setInsertCursor();
 }
 
 //----------------------------------------------------------------------
 void FLineEdit::onFocusIn (FFocusEvent*)
 {
+  if ( ! isReadOnly() )
+  {
     if ( insert_mode )
       setInsertCursor();
     else
       unsetInsertCursor();
+  }
 
   if ( getStatusBar() )
   {
     getStatusBar()->drawMessage();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -571,7 +597,7 @@ void FLineEdit::onFocusOut (FFocusEvent*)
     getStatusBar()->drawMessage();
   }
 
-  if ( ! insert_mode )
+  if ( ! insert_mode && ! isReadOnly() )
     setInsertCursor();
 }
 
@@ -623,7 +649,12 @@ void FLineEdit::init()
 {
   const auto& wc = getFWidgetColors();
   label->setAccelWidget(this);
+
+  if ( isReadOnly() )
+    unsetVisibleCursor();
+  else
     setVisibleCursor();
+
   setShadow();
 
   if ( isEnabled() )
@@ -658,7 +689,7 @@ bool FLineEdit::hasHotkey()
 //----------------------------------------------------------------------
 void FLineEdit::draw()
 {
-  if ( cursor_pos == NOT_SET )
+  if ( cursor_pos == NOT_SET && isReadOnly() )
     cursorEnd();
 
   if ( ! isShown() )

src/flistbox.cpp

@@ -202,6 +202,9 @@ void FListBox::insert (FListBoxItem listItem)
 
   itemlist.push_back (listItem);
 
+  if ( current == 0 )
+    current = 1;
+
   std::size_t element_count = getCount();
   recalculateVerticalBar (element_count);
 }
@@ -300,13 +303,8 @@ void FListBox::onKeyPress (FKeyEvent* ev)
   processKeyAction(ev);  // Process the keystrokes
 
   if ( current_before != current )
-  {
     processChanged();
 
-    if ( ! isMultiSelection() )
-      processSelect();
-  }
-
   if ( ev->isAccepted() )
   {
     bool draw_vbar( yoffset_before != yoffset );
@@ -330,12 +328,14 @@ void FListBox::onMouseDown (FMouseEvent* ev)
   getWidgetFocus();
 
   int yoffset_before = yoffset;
+  std::size_t current_before = current;
   int mouse_x = ev->getX();
   int mouse_y = ev->getY();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
   {
+    click_on_list = true;
     std::size_t element_count = getCount();
     current = std::size_t(yoffset + mouse_y - 1);
 
@@ -347,6 +347,11 @@ void FListBox::onMouseDown (FMouseEvent* ev)
     if ( ev->getButton() == fc::RightButton )
       multiSelection(current);
 
+    if ( current_before != current )
+    {
+      processChanged();
+    }
+
     if ( isShown() )
       drawList();
 
@@ -356,13 +361,15 @@ void FListBox::onMouseDown (FMouseEvent* ev)
       vbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
 //----------------------------------------------------------------------
 void FListBox::onMouseUp (FMouseEvent* ev)
 {
+  click_on_list = false;
+
   if ( drag_scroll != fc::noScroll )
     stopDragScroll();
 
@@ -374,8 +381,6 @@ void FListBox::onMouseUp (FMouseEvent* ev)
     if ( mouse_x > 1 && mouse_x < int(getWidth())
       && mouse_y > 1 && mouse_y < int(getHeight()) )
     {
-      processChanged();
-
       if ( ! isMultiSelection() )
         processSelect();
     }
@@ -400,6 +405,7 @@ void FListBox::onMouseMove (FMouseEvent* ev)
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
   {
+    click_on_list = true;
     std::size_t element_count = getCount();
     current = std::size_t(yoffset + mouse_y - 1);
 
@@ -408,12 +414,17 @@ void FListBox::onMouseMove (FMouseEvent* ev)
 
     inc_search.clear();
 
-    // Handle multiple selections
+    if ( current_before != current )
-    if ( ev->getButton() == fc::RightButton
-      && current_before != current )
     {
+      // Handle multiple selections + changes
+      if ( ev->getButton() == fc::RightButton)
+      {
+        processChanged();
         multiSelectionUpTo(current);
       }
+      else if ( ev->getButton() == fc::LeftButton)
+        processChanged();
+    }
 
     if ( isShown() )
       drawList();
@@ -424,13 +435,13 @@ void FListBox::onMouseMove (FMouseEvent* ev)
       vbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 
   // Auto-scrolling when dragging mouse outside the widget
-  if ( mouse_y < 2 )
+  if ( click_on_list && mouse_y < 2 )
     dragUp (ev->getButton());
-  else if ( mouse_y >= int(getHeight()) )
+  else if ( click_on_list && mouse_y >= int(getHeight()) )
     dragDown (ev->getButton());
   else
     stopDragScroll();
@@ -485,6 +496,7 @@ void FListBox::onTimer (FTimerEvent*)
   if ( current_before != current )
   {
     inc_search.clear();
+    processChanged();
 
     // Handle multiple selections
     if ( drag_scroll == fc::scrollUpSelect
@@ -501,7 +513,7 @@ void FListBox::onTimer (FTimerEvent*)
     vbar->drawBar();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -533,9 +545,6 @@ void FListBox::onWheel (FWheelEvent* ev)
   {
     inc_search.clear();
     processChanged();
-
-    if ( ! isMultiSelection() )
-      processSelect();
   }
 
   if ( isShown() )
@@ -547,7 +556,7 @@ void FListBox::onWheel (FWheelEvent* ev)
     vbar->drawBar();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -770,12 +779,12 @@ void FListBox::drawScrollbars()
   if ( ! hbar->isShown() && isHorizontallyScrollable() )
     hbar->show();
   else
-    vbar->redraw();
+    hbar->redraw();
 
   if ( ! vbar->isShown() && isVerticallyScrollable() )
     vbar->show();
   else
-    hbar->redraw();
+    vbar->redraw();
 }
 
 
@@ -1085,7 +1094,7 @@ inline void FListBox::updateDrawing (bool draw_vbar, bool draw_hbar)
     hbar->drawBar();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -1769,9 +1778,6 @@ void FListBox::cb_VBarChange (FWidget*, FDataPtr)
   {
     inc_search.clear();
     processChanged();
-
-    if ( ! isMultiSelection() )
-      processSelect();
   }
 
   if ( isShown() )
@@ -1785,7 +1791,7 @@ void FListBox::cb_VBarChange (FWidget*, FDataPtr)
       vbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -1838,7 +1844,7 @@ void FListBox::cb_HBarChange (FWidget*, FDataPtr)
   {
     drawList();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 
   if ( scrollType >= FScrollbar::scrollStepBackward )
@@ -1849,7 +1855,7 @@ void FListBox::cb_HBarChange (FWidget*, FDataPtr)
       hbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 

src/flistview.cpp

@@ -968,7 +968,7 @@ void FListView::onMouseDown (FMouseEvent* ev)
         vbar->drawBar();
 
       updateTerminal();
-      flushOutputBuffer();
+      flush();
     }
   }
 }
@@ -1073,7 +1073,7 @@ void FListView::onMouseMove (FMouseEvent* ev)
       vbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 
   // auto-scrolling when dragging mouse outside the widget
@@ -1160,7 +1160,7 @@ void FListView::onTimer (FTimerEvent*)
     vbar->drawBar();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -1199,7 +1199,7 @@ void FListView::onWheel (FWheelEvent* ev)
     vbar->drawBar();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -1462,12 +1462,12 @@ void FListView::drawScrollbars()
   if ( ! hbar->isShown() && isHorizontallyScrollable() )
     hbar->show();
   else
-    vbar->redraw();
+    hbar->redraw();
 
   if ( ! vbar->isShown() && isVerticallyScrollable() )
     vbar->show();
   else
-    hbar->redraw();
+    vbar->redraw();
 }
 
 //----------------------------------------------------------------------
@@ -1928,7 +1928,7 @@ void FListView::updateDrawing (bool draw_vbar, bool draw_hbar)
     hbar->drawBar();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -2636,7 +2636,7 @@ void FListView::cb_VBarChange (FWidget*, FDataPtr)
       vbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -2688,7 +2688,7 @@ void FListView::cb_HBarChange (FWidget*, FDataPtr)
     drawHeadlines();
     drawList();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 
   if ( scrollType >= FScrollbar::scrollStepBackward )
@@ -2699,7 +2699,7 @@ void FListView::cb_HBarChange (FWidget*, FDataPtr)
       hbar->drawBar();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 

src/fmenu.cpp

@@ -21,6 +21,7 @@
 ***********************************************************************/
 
 #include <memory>
+#include <tuple>
 #include <vector>
 
 #include "final/fapplication.h"
@@ -102,7 +103,7 @@ void FMenu::hide()
   const auto& t_geometry = getTermGeometryWithShadow();
   restoreVTerm (t_geometry);
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 
   if ( ! isSubMenu() )
   {
@@ -204,7 +205,7 @@ void FMenu::onMouseDown (FMouseEvent* ev)
         getStatusBar()->drawMessage();
 
       updateTerminal();
-      flushOutputBuffer();
+      flush();
     }
 
     return;
@@ -313,7 +314,7 @@ void FMenu::onMouseMove (FMouseEvent* ev)
   {
     closeOpenedSubMenu();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -347,7 +348,7 @@ void FMenu::cb_menuitem_toggled (FWidget* widget, FDataPtr)
 
 // private methods of FMenu
 //----------------------------------------------------------------------
-bool FMenu::isWindowsMenu (const FWidget* w) const
+bool FMenu::isDialog (const FWidget* w) const
 {
   return w->isDialogWidget();
 }
@@ -381,6 +382,13 @@ bool FMenu::isSubMenu() const
     return false;
 }
 
+//----------------------------------------------------------------------
+bool FMenu::isDialogMenu() const
+{
+  auto super = getSuperMenu();
+  return ( super ) ? super->isDialogWidget() : false;
+}
+
 //----------------------------------------------------------------------
 bool FMenu::isMouseOverMenu (const FPoint& termpos)
 {
@@ -584,7 +592,7 @@ void FMenu::openSubMenu (FMenu* sub_menu, bool select)
     getStatusBar()->drawMessage();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -635,7 +643,7 @@ void FMenu::hideSuperMenus()
     m->hide();
     m->hideSuperMenus();
   }
-  else if ( isWindowsMenu(super) )
+  else if ( isDialog(super) )
   {
     auto dgl = static_cast<FDialog*>(super);
     dgl->leaveMenu();
@@ -696,7 +704,7 @@ void FMenu::mouseDownSubmenu (FMenuItem* m_item)
       getStatusBar()->drawMessage();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -764,7 +772,7 @@ bool FMenu::mouseUpOverList (FPoint mouse_pos)
             getStatusBar()->drawMessage();
 
           updateTerminal();
-          flushOutputBuffer();
+          flush();
         }
 
         return true;
@@ -1038,7 +1046,7 @@ bool FMenu::selectNextItem()
 
       redraw();
       updateTerminal();
-      flushOutputBuffer();
+      flush();
       break;
     }
 
@@ -1088,7 +1096,7 @@ bool FMenu::selectPrevItem()
 
       redraw();
       updateTerminal();
-      flushOutputBuffer();
+      flush();
       break;
     }
   }
@@ -1151,7 +1159,7 @@ bool FMenu::hotkeyMenu (FKeyEvent* ev)
           hide();
           hideSuperMenus();
           updateTerminal();
-          flushOutputBuffer();
+          flush();
           ev->accept();
           item->processClicked();
         }
@@ -1494,7 +1502,7 @@ inline void FMenu::selectPrevMenu (FKeyEvent* ev)
       getStatusBar()->drawMessage();
 
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
   else
     keypressMenuBar(ev);  // select previous menu
@@ -1559,7 +1567,7 @@ inline void FMenu::closeMenu()
     if ( getStatusBar() )
       getStatusBar()->clearMessage();
 
-    if ( ! (super && isWindowsMenu(super)) )
+    if ( ! (super && isDialog(super)) )
       switchToPrevWindow(this);
   }
 
@@ -1567,7 +1575,7 @@ inline void FMenu::closeMenu()
     getStatusBar()->drawMessage();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -1576,4 +1584,30 @@ void FMenu::processActivate()
   emitCallback("activate");
 }
 
+
+// non-member functions
+//----------------------------------------------------------------------
+std::tuple<bool, bool> closeOpenMenus ( FMenu* menu
+                                      , const FPoint& mouse_position )
+{
+  // Close the open menu
+
+  bool is_dialog_menu{false};
+
+  if ( ! menu )
+    return std::make_tuple(false, false);
+
+  if ( menu->containsMenuStructure(mouse_position) )
+    return std::make_tuple(true, false);
+
+  if ( menu->isDialogMenu() )
+    is_dialog_menu = true;
+
+  menu->unselectItem();
+  menu->hide();
+  menu->hideSubMenus();
+  menu->hideSuperMenus();
+  return std::make_tuple (false, is_dialog_menu);
+}
+
 }  // namespace finalcut

src/fmenubar.cpp

@@ -971,7 +971,7 @@ void FMenuBar::leaveMenuBar()
     getStatusBar()->drawMessage();
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
   mouse_down = false;
 }
 

src/fmenuitem.cpp

@@ -249,7 +249,7 @@ void FMenuItem::openMenu()
   dd_menu->raiseWindow();
   dd_menu->redraw();
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -296,7 +296,7 @@ void FMenuItem::onMouseDoubleClick (FMouseEvent* ev)
     passMouseEvent (mbar, ev, fc::MouseDoubleClick_Event);
   }
 
-  if ( isWindowsMenu(super_menu) )
+  if ( isDialog(super_menu) )
   {
     auto dgl = static_cast<FDialog*>(super_menu);
     passMouseEvent (dgl, ev, fc::MouseDoubleClick_Event);
@@ -321,7 +321,7 @@ void FMenuItem::onMouseDown (FMouseEvent* ev)
     passMouseEvent (mbar, ev, fc::MouseDown_Event);
   }
 
-  if ( isWindowsMenu(super_menu) )
+  if ( isDialog(super_menu) )
   {
     auto dgl = static_cast<FDialog*>(super_menu);
     passMouseEvent (dgl, ev, fc::MouseDown_Event);
@@ -346,7 +346,7 @@ void FMenuItem::onMouseUp (FMouseEvent* ev)
     passMouseEvent (mbar, ev, fc::MouseUp_Event);
   }
 
-  if ( isWindowsMenu(super_menu) )
+  if ( isDialog(super_menu) )
   {
     auto dgl = static_cast<FDialog*>(super_menu);
     passMouseEvent (dgl, ev, fc::MouseUp_Event);
@@ -371,7 +371,7 @@ void FMenuItem::onMouseMove (FMouseEvent* ev)
     passMouseEvent (mbar, ev, fc::MouseMove_Event);
   }
 
-  if ( isWindowsMenu(super_menu) )
+  if ( isDialog(super_menu) )
   {
     auto dgl = static_cast<FDialog*>(super_menu);
     passMouseEvent (dgl, ev, fc::MouseMove_Event);
@@ -458,7 +458,7 @@ void FMenuItem::onFocusOut (FFocusEvent*)
 
 // protected methods of FMenuItem
 //----------------------------------------------------------------------
-bool FMenuItem::isWindowsMenu (FWidget* w) const
+bool FMenuItem::isDialog (FWidget* w) const
 {
   return ( w ) ? w->isDialogWidget() : false;
 }

src/fpoint.cpp

@@ -53,16 +53,16 @@ FPoint& FPoint::operator = (FPoint&& p)
 //----------------------------------------------------------------------
 FPoint& FPoint::operator += (const FPoint& p)
 {
-  xpos = xpos + p.xpos;
+  xpos += p.xpos;
-  ypos = ypos + p.ypos;
+  ypos += p.ypos;
   return *this;
 }
 
 //----------------------------------------------------------------------
 FPoint& FPoint::operator -= (const FPoint& p)
 {
-  xpos = xpos - p.xpos;
+  xpos -= p.xpos;
-  ypos = ypos - p.ypos;
+  ypos -= p.ypos;
   return *this;
 }
 
@@ -91,6 +91,20 @@ bool FPoint::isOrigin() const
   return xpos == 0 && ypos == 0;
 }
 
+//----------------------------------------------------------------------
+void FPoint::move (int dx, int dy)
+{
+  xpos += dx;
+  ypos += dy;
+}
+
+//----------------------------------------------------------------------
+void FPoint::move (const FPoint& d)
+{
+  xpos += d.getX();
+  ypos += d.getY();
+}
+
 //----------------------------------------------------------------------
 std::ostream& operator << (std::ostream& outstr, const FPoint& p)
 {

src/fprogressbar.cpp

@@ -133,7 +133,7 @@ void FProgressbar::draw()
   if ( getFlags().shadow )
     drawShadow(this);
 
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -179,7 +179,7 @@ void FProgressbar::drawProgressBar()
     setReverse(false);
 
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------

src/frect.cpp

@@ -229,19 +229,19 @@ void FRect::setCoordinates (int x1, int y1, int x2, int y2)
 //----------------------------------------------------------------------
 void FRect::move (int dx, int dy)
 {
-  X1 = X1 + dx;
+  X1 += dx;
-  Y1 = Y1 + dy;
+  Y1 += dy;
-  X2 = X2 + dx;
+  X2 += dx;
-  Y2 = Y2 + dy;
+  Y2 += dy;
 }
 
 //----------------------------------------------------------------------
 void FRect::move (const FPoint& d)
 {
-  X1 = X1 + d.getX();
+  X1 += d.getX();
-  Y1 = Y1 + d.getY();
+  Y1 += d.getY();
-  X2 = X2 + d.getX();
+  X2 += d.getX();
-  Y2 = Y2 + d.getY();
+  Y2 += d.getY();
 }
 
 //----------------------------------------------------------------------
@@ -332,6 +332,7 @@ FRect& FRect::operator = (FRect&& r)
   return *this;
 }
 
+// FRect non-member operators
 //----------------------------------------------------------------------
 FRect operator + (const FRect& r, const FSize& s)
 {

src/fscrollbar.cpp

@@ -129,8 +129,7 @@ void FScrollbar::setPageSize (int document_size, int page_size)
 //----------------------------------------------------------------------
 void FScrollbar::setOrientation (fc::orientation o)
 {
-  std::size_t nf{0};
+  length = ( o == fc::vertical ) ? getHeight() : getWidth();
-  length = ( getHeight() > getWidth() ) ? getHeight() : getWidth();
 
   if ( o == fc::vertical && bar_orientation == fc::horizontal )
   {
@@ -141,12 +140,9 @@ void FScrollbar::setOrientation (fc::orientation o)
   {
     setWidth(length);
     setHeight(1);
-
-    if ( isNewFont() )
-      nf = 2;
   }
 
-  slider_length = bar_length = length - nf - 2;
+  calculateSliderValues();
   bar_orientation = o;
 }
 
@@ -158,10 +154,9 @@ void FScrollbar::setGeometry ( const FPoint& pos, const FSize& size
 
   FWidget::setGeometry (pos, size, adjust);
 
-  std::size_t nf{0};
   std::size_t w = size.getWidth();
   std::size_t h = size.getHeight();
-  length = ( h > w ) ? h : w;
+  length = ( bar_orientation == fc::vertical ) ? h : w;
 
   if ( bar_orientation == fc::vertical )
   {
@@ -172,12 +167,9 @@ void FScrollbar::setGeometry ( const FPoint& pos, const FSize& size
   {
     setWidth(length);
     setHeight(1);
-
-    if ( isNewFont() )
-      nf = 2;
   }
 
-  slider_length = bar_length = length - nf - 2;
+  calculateSliderValues();
 }
 
 //----------------------------------------------------------------------

src/fsize.cpp

@@ -122,6 +122,7 @@ void FSize::scaleBy (const FPoint& d)
   scaleBy (d.getX(), d.getY());
 }
 
+// FSize non-member operators
 //----------------------------------------------------------------------
 std::ostream& operator << (std::ostream& outstr, const FSize& s)
 {

src/fspinbox.cpp

@@ -97,6 +97,7 @@ bool FSpinBox::setShadow (bool enable)
 
   return getFlags().shadow;
 }
+
 //----------------------------------------------------------------------
 void FSpinBox::setValue (sInt64 n)
 {

src/fswitch.cpp

@@ -124,7 +124,7 @@ void FSwitch::draw()
   drawCheckButton();
   FToggleButton::draw();
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------

src/ftextview.cpp

@@ -609,7 +609,7 @@ void FTextView::draw()
 
   setCursorPos (FPoint(int(getWidth()), int(getHeight())));
   updateTerminal();
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -634,12 +634,12 @@ void FTextView::drawScrollbars()
   if ( ! hbar->isShown() && isHorizontallyScrollable() )
     hbar->show();
   else
-    vbar->redraw();
+    hbar->redraw();
 
   if ( ! vbar->isShown() && isVerticallyScrollable() )
     vbar->show();
   else
-    hbar->redraw();
+    vbar->redraw();
 }
 
 //----------------------------------------------------------------------

src/ftogglebutton.cpp

@@ -221,7 +221,7 @@ void FToggleButton::onMouseDown (FMouseEvent* ev)
   {
     getStatusBar()->drawMessage();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 }
 
@@ -298,7 +298,7 @@ void FToggleButton::onAccel (FAccelEvent* ev)
   {
     getStatusBar()->drawMessage();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
   }
 
   processClick();

src/ftooltip.cpp

@@ -75,21 +75,6 @@ void FToolTip::setText (const FString& txt)
   calculateDimensions();
 }
 
-//----------------------------------------------------------------------
-void FToolTip::draw()
-{
-  int y{0};
-  setColor();
-  clearArea();
-  drawBorder();
-
-  for (auto&& line : text_components)
-  {
-    print() << FPoint(3, 2 + y) << line;
-    y++;
-  }
-}
-
 //----------------------------------------------------------------------
 void FToolTip::show()
 {
@@ -128,6 +113,21 @@ void FToolTip::init()
   calculateDimensions();
 }
 
+//----------------------------------------------------------------------
+void FToolTip::draw()
+{
+  int y{0};
+  setColor();
+  clearArea();
+  drawBorder();
+
+  for (auto&& line : text_components)
+  {
+    print() << FPoint(3, 2 + y) << line;
+    y++;
+  }
+}
+
 //----------------------------------------------------------------------
 void FToolTip::calculateDimensions()
 {

src/fvterm.cpp

@@ -144,7 +144,7 @@ void FVTerm::setTermXY (int x, int y)
   if ( move_str )
     appendOutputBuffer(move_str);
 
-  flushOutputBuffer();
+  flush();
   term_pos->setPoint(x, y);
 }
 
@@ -158,7 +158,7 @@ void FVTerm::hideCursor (bool enable)
   if ( visibility_str )
     appendOutputBuffer(visibility_str);
 
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -590,6 +590,21 @@ void FVTerm::print (const FColorPair& pair)
   setColor (pair.getForegroundColor(), pair.getBackgroundColor());
 }
 
+//----------------------------------------------------------------------
+void FVTerm::flush()
+{
+  // Flush the output buffer
+
+  while ( ! output_buffer->empty() )
+  {
+    static FTerm::defaultPutChar& FTermPutchar = FTerm::putchar();
+    FTermPutchar (output_buffer->front());
+    output_buffer->pop();
+  }
+
+  std::fflush(stdout);
+}
+
 
 // protected methods of FVTerm
 //----------------------------------------------------------------------
@@ -1278,19 +1293,6 @@ void FVTerm::finishTerminalUpdate()
   terminal_update_complete = true;
 }
 
-//----------------------------------------------------------------------
-void FVTerm::flushOutputBuffer()
-{
-  while ( ! output_buffer->empty() )
-  {
-    static FTerm::defaultPutChar& FTermPutchar = FTerm::putchar();
-    FTermPutchar (output_buffer->front());
-    output_buffer->pop();
-  }
-
-  std::fflush(stdout);
-}
-
 
 // private methods of FVTerm
 //----------------------------------------------------------------------
@@ -1940,7 +1942,7 @@ void FVTerm::finish()
   if ( FTerm::hasAlternateScreen() )
     clearTerm();
 
-  flushOutputBuffer();
+  flush();
 
   if ( output_buffer )
     delete output_buffer;
@@ -2089,7 +2091,7 @@ bool FVTerm::clearTerm (int fillchar)
     setTermXY (0, 0);
   }
 
-  flushOutputBuffer();
+  flush();
   return true;
 }
 
@@ -3047,7 +3049,7 @@ int FVTerm::appendOutputBuffer (int ch)
   output_buffer->push(ch);
 
   if ( output_buffer->size() >= TERMINAL_OUTPUT_BUFFER_SIZE )
-    flushOutputBuffer();
+    flush();
 
   return ch;
 }

src/fwidget.cpp

@@ -973,7 +973,7 @@ void FWidget::redraw()
   if ( redraw_root_widget == this )
   {
     updateTerminal();
-    flushOutputBuffer();
+    flush();
     redraw_root_widget = nullptr;
   }
 }
@@ -1053,7 +1053,7 @@ void FWidget::show()
   {
     finishTerminalUpdate();
     updateTerminal();
-    flushOutputBuffer();
+    flush();
     show_root_widget = nullptr;
   }
 
@@ -1373,7 +1373,7 @@ void FWidget::hideArea (const FSize& size)
     print() << FPoint(1, 1 + y) << FString(size.getWidth(), L' ');
   }
 
-  flushOutputBuffer();
+  flush();
 }
 
 //----------------------------------------------------------------------
@@ -1519,10 +1519,12 @@ bool FWidget::event (FEvent* ev)
       break;
 
     case fc::MouseDown_Event:
+      emitCallback("mouse-press");
       onMouseDown (static_cast<FMouseEvent*>(ev));
       break;
 
     case fc::MouseUp_Event:
+      emitCallback("mouse-release");
       onMouseUp (static_cast<FMouseEvent*>(ev));
       break;
 
@@ -1531,18 +1533,22 @@ bool FWidget::event (FEvent* ev)
       break;
 
     case fc::MouseWheel_Event:
+      emitWheelCallback(static_cast<FWheelEvent*>(ev));
       onWheel (static_cast<FWheelEvent*>(ev));
       break;
 
     case fc::MouseMove_Event:
+      emitCallback("mouse-move");
       onMouseMove (static_cast<FMouseEvent*>(ev));
       break;
 
     case fc::FocusIn_Event:
+      emitCallback("focus-in");
       onFocusIn (static_cast<FFocusEvent*>(ev));
       break;
 
     case fc::FocusOut_Event:
+      emitCallback("focus-out");
       onFocusOut (static_cast<FFocusEvent*>(ev));
       break;
 
@@ -1829,6 +1835,17 @@ void FWidget::KeyDownEvent (FKeyEvent* kev)
   }
 }
 
+//----------------------------------------------------------------------
+void FWidget::emitWheelCallback (FWheelEvent* ev)
+{
+  int wheel = ev->getWheel();
+
+  if ( wheel == fc::WheelUp )
+    emitCallback("mouse-wheel-up");
+  else if ( wheel == fc::WheelDown )
+    emitCallback("mouse-wheel-down");
+}
+
 //----------------------------------------------------------------------
 void FWidget::setWindowFocus (bool enable)
 {
@@ -1894,7 +1911,7 @@ bool FWidget::changeFocus ( FWidget* follower, FWidget* parent
       redraw();
       follower->redraw();
       updateTerminal();
-      flushOutputBuffer();
+      flush();
     }
   }
 

src/fwindow.cpp

@@ -23,7 +23,9 @@
 #include <utility>
 
 #include "final/fapplication.h"
+#include "final/fcombobox.h"
 #include "final/fevent.h"
+#include "final/fmenu.h"
 #include "final/fmenubar.h"
 #include "final/fstatusbar.h"
 #include "final/fwindow.h"
@@ -871,4 +873,46 @@ void FWindow::processAlwaysOnTop()
   }
 }
 
+// non-member functions
+//----------------------------------------------------------------------
+void closeDropDown (FWidget* widget, const FPoint& mouse_position)
+{
+  // Close the pop down windows
+
+  bool is_dialog_menu{false};
+  auto openmenu = FWidget::getOpenMenu();
+
+  if ( ! openmenu )
+   return;
+
+  if ( openmenu->isInstanceOf("FMenu") )
+  {
+    bool contains_menu_structure;
+    auto menu = static_cast<FMenu*>(openmenu);
+    std::tie(contains_menu_structure, is_dialog_menu) = \
+        closeOpenMenus (menu, mouse_position);
+
+    if ( contains_menu_structure )
+      return;
+  }
+
+  if ( openmenu->isInstanceOf("FDropDownListBox") )
+  {
+    auto drop_down = static_cast<FDropDownListBox*>(openmenu);
+
+    if ( ! closeComboBox(drop_down, mouse_position) )
+      return;
+  }
+
+  // No widget was been clicked and the menu is no dialog menu
+  if ( ! (FWidget::getClickedWidget() || is_dialog_menu) )
+    FWindow::switchToPrevWindow(widget);
+
+  if ( FWidget::getStatusBar() )
+    FWidget::getStatusBar()->drawMessage();
+
+  widget->updateTerminal();
+  FVTerm::flush();
+}
+
 }  // namespace finalcut

src/include/final/fapplication.h

@@ -163,7 +163,7 @@ class FApplication : public FWidget
     bool                  getMouseEvent();
     FWidget*&             determineClickedWidget();
     void                  unsetMoveSizeMode();
-    void                  closeOpenMenu();
+    void                  closeDropDown();
     void                  unselectMenubarItems();
     void                  sendMouseEvent();
     void                  sendMouseMoveEvent ( const FPoint&

src/include/final/fcombobox.h

@@ -0,0 +1,342 @@
+/***********************************************************************
+* fcombobox.h - Widget FComboBox                                       *
+*                                                                      *
+* This file is part of the Final Cut widget toolkit                    *
+*                                                                      *
+* Copyright 2019 Markus Gans                                           *
+*                                                                      *
+* The Final Cut is free software; you can redistribute it and/or       *
+* modify it under the terms of the GNU Lesser General Public License   *
+* as published by the Free Software Foundation; either version 3 of    *
+* the License, or (at your option) any later version.                  *
+*                                                                      *
+* The Final Cut 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 Lesser General Public License for more details.                  *
+*                                                                      *
+* You should have received a copy of the GNU Lesser General Public     *
+* License along with this program.  If not, see                        *
+* <http://www.gnu.org/licenses/>.                                      *
+***********************************************************************/
+
+/*  Inheritance diagram
+ *  ═══════════════════
+ *
+ * ▕▔▔▔▔▔▔▔▔▔▏
+ * ▕  FTerm  ▏
+ * ▕▁▁▁▁▁▁▁▁▁▏
+ *      ▲
+ *      │
+ * ▕▔▔▔▔▔▔▔▔▔▏ ▕▔▔▔▔▔▔▔▔▔▏
+ * ▕ FVTerm  ▏ ▕ FObject ▏
+ * ▕▁▁▁▁▁▁▁▁▁▏ ▕▁▁▁▁▁▁▁▁▁▏
+ *      ▲           ▲
+ *      │           │
+ *      └─────┬─────┘
+ *            │
+ *       ▕▔▔▔▔▔▔▔▔▔▏
+ *       ▕ FWidget ▏
+ *       ▕▁▁▁▁▁▁▁▁▁▏
+ *            ▲
+ *            │
+ *      ▕▔▔▔▔▔▔▔▔▔▔▔▏1     1▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏
+ *      ▕ FComboBox ▏- - - -▕ FDropDownListBox ▏
+ *      ▕▁▁▁▁▁▁▁▁▁▁▁▏       ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏
+ */
+
+#ifndef FCOMBOBOX_H
+#define FCOMBOBOX_H
+
+#if !defined (USE_FINAL_H) && !defined (COMPILE_FINAL_CUT)
+  #error "Only <final/final.h> can be included directly."
+#endif
+
+#include "final/flineedit.h"
+#include "final/flistbox.h"
+#include "final/fwidget.h"
+#include "final/fwindow.h"
+
+
+namespace finalcut
+{
+
+// class forward declaration
+class FLineEdit;
+class FListBox;
+
+//----------------------------------------------------------------------
+// class FDropDownListBox
+//----------------------------------------------------------------------
+
+class FDropDownListBox : public FWindow
+{
+  public:
+    // Using-declaration
+    using FWidget::setGeometry;
+
+    // Constructor
+    explicit FDropDownListBox (FWidget* = nullptr);
+
+    // Disable copy constructor
+    FDropDownListBox (const FDropDownListBox&) = delete;
+
+    // Destructor
+    virtual ~FDropDownListBox ();
+
+    // Disable assignment operator (=)
+    FDropDownListBox& operator = (const FDropDownListBox&) = delete;
+
+    // Accessors
+    const FString       getClassName() const override;
+
+    // Mutators
+    void                setGeometry ( const FPoint&, const FSize&
+                                    , bool = true ) override;
+    // Inquiries
+    bool                isEmpty();
+
+    // Methods
+    void                show() override;
+    void                hide() override;
+
+    // Event handlers
+    void                onKeyPress (FKeyEvent*) override;
+
+  private:
+    // Methods
+    void                init();
+    void                draw() override;
+    void                drawShadow();
+    bool                containsWidget (const FPoint&);
+
+    // Data members
+    FListBox            list{this};
+
+    // Friend functions
+    friend bool closeComboBox (FDropDownListBox*, const FPoint&);
+
+    // Friend classes
+    friend class FComboBox;
+};
+
+// FDropDownListBox inline functions
+//----------------------------------------------------------------------
+inline const FString FDropDownListBox::getClassName() const
+{ return "FDropDownListBox"; }
+
+//----------------------------------------------------------------------
+inline bool FDropDownListBox::isEmpty()
+{ return bool( list.getCount() == 0 ); }
+
+
+//----------------------------------------------------------------------
+// class FComboBox
+//----------------------------------------------------------------------
+
+class FComboBox : public FWidget
+{
+  public:
+    // Using-declaration
+    using FWidget::setGeometry;
+
+    // Constructors
+    explicit FComboBox (FWidget* = nullptr);
+
+    // Disable copy constructor
+    FComboBox (const FComboBox&) = delete;
+
+    // Destructor
+    ~FComboBox();
+
+    // Disable assignment operator (=)
+    FComboBox& operator = (const FComboBox&) = delete;
+
+    // Overloaded operators
+
+    // Accessors
+    const FString       getClassName() const override;
+    std::size_t         getCount() const;
+    FString             getText() const;
+    FDataPtr            getItemData();
+    FLineEdit::label_o  getLabelOrientation();
+
+    // Mutators
+    void                setGeometry ( const FPoint&, const FSize&
+                                    , bool = true ) override;
+    bool                setEnable (bool) override;
+    bool                setEnable() override;
+    bool                unsetEnable() override;
+    bool                setDisable() override;
+    bool                setFocus (bool) override;
+    bool                setFocus() override;
+    bool                unsetFocus() override;
+    bool                setShadow (bool);
+    bool                setShadow();
+    bool                unsetShadow();
+    bool                setEditable (bool);
+    bool                setEditable();
+    bool                unsetEditable();
+    void                setMaxVisibleItems (std::size_t);
+    void                setLabelText (const FString&);
+    void                setLabelOrientation (const FLineEdit::label_o);
+
+    // Inquiries
+    bool                hasShadow();
+
+    // Methods
+    void                insert (FListBoxItem);
+    template <typename T>
+    void                insert ( const std::initializer_list<T>& list
+                               , FDataPtr = nullptr );
+    template <typename ItemT>
+    void                insert (const ItemT&, FDataPtr = nullptr);
+    void                remove (std::size_t);
+    void                reserve (std::size_t);
+    void                clear();
+    virtual void        showDropDown();
+    virtual void        hideDropDown();
+
+    // Event handlers
+    void                onKeyPress (FKeyEvent*) override;
+    void                onMouseDown (FMouseEvent*) override;
+    void                onMouseUp (FMouseEvent*) override;
+    void                onMouseMove (FMouseEvent*) override;
+    void                onWheel (FWheelEvent*) override;
+    void                onFocusOut (FFocusEvent*) override;
+
+  private:
+    // Inquiries
+    bool                isMouseOverListWindow (const FPoint&);
+
+    // Methods
+    void                init();
+    void                initCallbacks();
+    void                draw() override;
+    void                onePosUp();
+    void                onePosDown();
+    void                passEventToListWindow (FMouseEvent*&);
+    void                processClick();
+    void                processChanged();
+
+    // Callback methods
+    void                cb_setInputField (FWidget*, FDataPtr);
+    void                cb_closeComboBox (FWidget*, FDataPtr);
+    void                cb_inputFieldSwitch (FWidget*, FDataPtr);
+    void                cb_inputFieldHandOver (FWidget*, FDataPtr);
+
+    // Data members
+    FLineEdit           input_field{this};
+    FDropDownListBox    list_window{this};
+    std::size_t         max_items{8};
+    int                 nf{0};
+    bool                is_editable{true};
+};
+
+// non-member function forward declarations
+//----------------------------------------------------------------------
+void closeOpenComboBox();
+bool closeComboBox (FDropDownListBox*, const FPoint&);
+
+// FComboBox inline functions
+//----------------------------------------------------------------------
+inline const FString FComboBox::getClassName() const
+{ return "FComboBox"; }
+
+//----------------------------------------------------------------------
+inline std::size_t FComboBox::getCount() const
+{ return list_window.list.getCount(); }
+
+//----------------------------------------------------------------------
+inline FString FComboBox::getText() const
+{ return input_field.getText(); }
+
+//----------------------------------------------------------------------
+inline FDataPtr FComboBox::getItemData()
+{
+  std::size_t i = list_window.list.currentItem();
+  return list_window.list.getItem(i).getData();
+}
+
+//----------------------------------------------------------------------
+inline FLineEdit::label_o FComboBox::getLabelOrientation()
+{ return input_field.getLabelOrientation(); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::setEnable()
+{ return setEnable(true); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::unsetEnable()
+{ return setEnable(false); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::setDisable()
+{ return setEnable(false); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::setFocus()
+{ return setFocus(true); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::unsetFocus()
+{ return setFocus(false); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::setShadow()
+{ return setShadow(true); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::unsetShadow()
+{ return setShadow(false); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::setEditable()
+{ return setEditable(true); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::unsetEditable()
+{ return setEditable(false); }
+
+//----------------------------------------------------------------------
+inline bool FComboBox::hasShadow()
+{ return getFlags().shadow; }
+
+//----------------------------------------------------------------------
+template <typename T>
+void FComboBox::insert ( const std::initializer_list<T>& list
+                       , FDataPtr d )
+{
+  for (auto& item : list)
+  {
+    FListBoxItem listItem (FString() << item, d);
+    insert (listItem);
+  }
+}
+
+//----------------------------------------------------------------------
+template <typename ItemT>
+void FComboBox::insert ( const ItemT& item
+                       , FDataPtr d )
+{
+  FListBoxItem listItem (FString() << item, d);
+  insert (listItem);
+}
+
+//----------------------------------------------------------------------
+inline void FComboBox::reserve (std::size_t new_cap)
+{ list_window.list.reserve(new_cap); }
+
+//----------------------------------------------------------------------
+inline void FComboBox::setLabelText (const FString& s)
+{ input_field.setLabelText(s); }
+
+//----------------------------------------------------------------------
+inline void FComboBox::setLabelOrientation (const FLineEdit::label_o o)
+{ input_field.setLabelOrientation(o); }
+
+}  // namespace finalcut
+
+#endif  // FCOMBOBOX_H
+
+

src/include/final/fconfig.h

@@ -50,9 +50,7 @@
 #endif
 
 /* Define to 1 if GPM mouse is enabled */
-#ifndef F_HAVE_LIBGPM
+/* #undef HAVE_LIBGPM */
-#define F_HAVE_LIBGPM 1
-#endif
 
 /* Define to 1 if you have the <linux/fb.h> header file. */
 #ifndef F_HAVE_LINUX_FB_H

src/include/final/ffiledialog.h

@@ -140,11 +140,6 @@ class FFileDialog : public FDialog
     static const FString fileSaveChooser ( FWidget*
                                          , const FString& = FString()
                                          , const FString& = FString() );
-    // Friend function
-    friend const FString fileChooser ( FWidget*
-                                     , const FString&
-                                     , const FString&
-                                     , FFileDialog::DialogType);
 
   protected:
     // Method
@@ -212,6 +207,10 @@ class FFileDialog : public FDialog
                            , const FFileDialog::dir_entry& );
     friend bool sortDirFirst ( const FFileDialog::dir_entry&
                              , const FFileDialog::dir_entry& );
+    friend const FString fileChooser ( FWidget*
+                                     , const FString&
+                                     , const FString&
+                                     , FFileDialog::DialogType);
 };
 
 // FMessageBox inline functions

src/include/final/final.h

@@ -35,6 +35,7 @@
 #include <final/fobject.h>
 #include <final/fcolorpalette.h>
 #include <final/fcolorpair.h>
+#include <final/fcombobox.h>
 #include <final/fcharmap.h>
 #include <final/fcheckbox.h>
 #include <final/fcheckmenuitem.h>

src/include/final/flineedit.h

@@ -127,19 +127,23 @@ class FLineEdit : public FWidget
     void                setLabelAssociatedWidget (FWidget*);
     void                setGeometry ( const FPoint&, const FSize&
                                     , bool = true ) override;
-    bool                setEnable(bool) override;
+    bool                setEnable (bool) override;
     bool                setEnable() override;
     bool                unsetEnable() override;
     bool                setDisable() override;
-    bool                setFocus(bool) override;
+    bool                setFocus (bool) override;
     bool                setFocus() override;
     bool                unsetFocus() override;
-    bool                setShadow(bool);
+    bool                setShadow (bool);
     bool                setShadow();
     bool                unsetShadow();
+    bool                setReadOnly (bool);
+    bool                setReadOnly();
+    bool                unsetReadOnly();
 
     // Inquiry
-    bool                hasShadow();
+    bool                hasShadow() const;
+    bool                isReadOnly() const;
 
     // Methods
     void                hide() override;
@@ -215,14 +219,12 @@ class FLineEdit : public FWidget
     int           scroll_repeat{100};
     bool          scroll_timer{false};
     bool          insert_mode{true};
+    bool          read_only{false};
     std::size_t   cursor_pos{NOT_SET};
     std::size_t   text_offset{0};
     std::size_t   char_width_offset{0};
     std::size_t   x_pos{0};
     std::size_t   max_length{std::numeric_limits<std::size_t>::max()};
-
-    // Friend class
-    friend class FSpinBox;
 };
 
 
@@ -306,9 +308,21 @@ inline bool FLineEdit::unsetShadow()
 { return setShadow(false); }
 
 //----------------------------------------------------------------------
-inline bool FLineEdit::hasShadow()
+inline bool FLineEdit::setReadOnly()
+{ return setReadOnly(true); }
+
+//----------------------------------------------------------------------
+inline bool FLineEdit::unsetReadOnly()
+{ return setReadOnly(true); }
+
+//----------------------------------------------------------------------
+inline bool FLineEdit::hasShadow() const
 { return getFlags().shadow; }
 
+//----------------------------------------------------------------------
+inline bool FLineEdit::isReadOnly() const
+{ return read_only; }
+
 }  // namespace finalcut
 
 #endif  // FLINEEDIT_H

src/include/final/flistbox.h

@@ -167,8 +167,10 @@ class FListBox : public FWidget
     // Accessors
     const FString       getClassName() const override;
     std::size_t         getCount() const;
-    FListBoxItem        getItem (std::size_t);
+    FListBoxItem&       getItem (std::size_t);
-    FListBoxItem        getItem (listBoxItems::iterator) const;
+    const FListBoxItem& getItem (std::size_t) const;
+    FListBoxItem&       getItem (listBoxItems::iterator);
+    const FListBoxItem& getItem (listBoxItems::const_iterator) const;
     std::size_t         currentItem() const;
     FString&            getText();
 
@@ -308,7 +310,7 @@ class FListBox : public FWidget
     void                processChanged();
     void                lazyConvert (listBoxItems::iterator, int);
     listBoxItems::iterator index2iterator (std::size_t);
-
+    listBoxItems::const_iterator index2iterator (std::size_t index) const;
     // Callback methods
     void                cb_VBarChange (FWidget*, FDataPtr);
     void                cb_HBarChange (FWidget*, FDataPtr);
@@ -340,6 +342,7 @@ class FListBox : public FWidget
     bool            multi_select{false};
     bool            mouse_select{false};
     bool            scroll_timer{false};
+    bool            click_on_list{false};
 };
 
 
@@ -381,14 +384,25 @@ inline std::size_t FListBox::getCount() const
 { return itemlist.size(); }
 
 //----------------------------------------------------------------------
-inline FListBoxItem FListBox::getItem (std::size_t index)
+inline FListBoxItem& FListBox::getItem (std::size_t index)
 {
   listBoxItems::iterator iter = index2iterator(index - 1);
   return *iter;
 }
 
 //----------------------------------------------------------------------
-inline FListBoxItem FListBox::getItem (listBoxItems::iterator iter) const
+inline const FListBoxItem& FListBox::getItem (std::size_t index) const
+{
+  listBoxItems::const_iterator iter = index2iterator(index - 1);
+  return *iter;
+}
+
+//----------------------------------------------------------------------
+inline FListBoxItem& FListBox::getItem (listBoxItems::iterator iter)
+{ return *iter; }
+
+//----------------------------------------------------------------------
+inline const FListBoxItem& FListBox::getItem (listBoxItems::const_iterator iter) const
 { return *iter; }
 
 //----------------------------------------------------------------------
@@ -539,6 +553,15 @@ inline FListBox::listBoxItems::iterator \
   return iter;
 }
 
+//----------------------------------------------------------------------
+inline FListBox::listBoxItems::const_iterator \
+    FListBox::index2iterator (std::size_t index) const
+{
+  listBoxItems::const_iterator iter = itemlist.begin();
+  std::advance (iter, index);
+  return iter;
+}
+
 }  // namespace finalcut
 
 #endif  // FLISTBOX_H

src/include/final/fmenu.h

@@ -159,11 +159,12 @@ class FMenu : public FWindow, public FMenuList
     void         setSuperMenu (FWidget*);
 
     // Inquiries
-    bool         isWindowsMenu (const FWidget*) const;
+    bool         isDialog (const FWidget*) const;
     bool         isMenuBar (const FWidget*) const;
     bool         isMenu (const FWidget*) const;
     bool         isRadioMenuItem (const FWidget*) const;
     bool         isSubMenu() const;
+    bool         isDialogMenu() const;
     bool         isMouseOverMenu (const FPoint&);
     bool         isMouseOverSubMenu (const FPoint&);
     bool         isMouseOverSuperMenu (const FPoint&);
@@ -215,14 +216,6 @@ class FMenu : public FWindow, public FMenuList
     void         closeMenu();
     void         processActivate();
 
-    // Friend classes
-    friend class FApplication;
-    friend class FCheckMenuItem;
-    friend class FDialog;
-    friend class FMenuBar;
-    friend class FMenuItem;
-    friend class FRadioMenuItem;
-
     // Data members
     FMenuItem    menuitem{};
     FWidget*     super_menu{nullptr};
@@ -232,8 +225,22 @@ class FMenu : public FWindow, public FMenuList
     std::size_t  hotkeypos{NOT_SET};
     bool         mouse_down{false};
     bool         has_checkable_items{false};
+
+    // Friend functions
+    friend std::tuple<bool, bool> closeOpenMenus (FMenu*, const FPoint&);
+
+    // Friend classes
+    friend class FCheckMenuItem;
+    friend class FDialog;
+    friend class FMenuBar;
+    friend class FMenuItem;
+    friend class FRadioMenuItem;
 };
 
+// non-member function forward declarations
+//----------------------------------------------------------------------
+std::tuple<bool, bool> closeOpenMenus (FMenu*, const FPoint&);
+
 
 // FMenu inline functions
 //----------------------------------------------------------------------

src/include/final/fmenubar.h

@@ -147,15 +147,15 @@ class FMenuBar : public FWindow, public FMenuList
     void          passEventToMenu (const FMouseEvent*&);
     void          leaveMenuBar();
 
-    // Friend classes
-    friend class FMenu;
-    friend class FMenuItem;
-
     // Data members
     std::size_t   screenWidth{80};
     bool          mouse_down{false};
     bool          drop_down{false};
     bool          focus_changed{false};
+
+    // Friend classes
+    friend class FMenu;
+    friend class FMenuItem;
 };
 
 

src/include/final/fmenuitem.h

@@ -150,7 +150,7 @@ class FMenuItem : public FWidget
     void                setSuperMenu (FWidget*);
 
     // Inquiries
-    bool                isWindowsMenu (FWidget*) const;
+    bool                isDialog (FWidget*) const;
     bool                isMenuBar (FWidget*) const;
     bool                isMenu (FWidget*) const;
 

src/include/final/foptiattr.h

@@ -125,10 +125,6 @@ class FOptiAttr final
     // Disable assignment operator (=)
     FOptiAttr& operator = (const FOptiAttr&) = delete;
 
-    // Friend operator functions
-    friend bool operator == (const FChar&, const FChar&);
-    friend bool operator != (const FChar&, const FChar&);
-
     // Accessors
     const FString getClassName() const;
 
@@ -336,24 +332,6 @@ class FOptiAttr final
 
 
 // FOptiAttr inline functions
-//----------------------------------------------------------------------
-inline bool operator == ( const FChar& lhs,
-                          const FChar& rhs )
-{
-  return lhs.ch           == rhs.ch
-      && lhs.fg_color     == rhs.fg_color
-      && lhs.bg_color     == rhs.bg_color
-      && lhs.attr.byte[0] == rhs.attr.byte[0]
-      && lhs.attr.byte[1] == rhs.attr.byte[1]
-      && lhs.attr.bit.fullwidth_padding \
-                          == rhs.attr.bit.fullwidth_padding;
-}
-
-//----------------------------------------------------------------------
-inline bool operator != ( const FChar& lhs,
-                          const FChar& rhs )
-{ return ! ( lhs == rhs ); }
-
 //----------------------------------------------------------------------
 inline const FString FOptiAttr::getClassName() const
 { return "FOptiAttr"; }
@@ -374,6 +352,26 @@ inline void FOptiAttr::setDefaultColorSupport()
 inline void FOptiAttr::unsetDefaultColorSupport()
 { ansi_default_color = false; }
 
+
+// FChar operator functions
+//----------------------------------------------------------------------
+inline bool operator == ( const FChar& lhs,
+                          const FChar& rhs )
+{
+  return lhs.ch           == rhs.ch
+      && lhs.fg_color     == rhs.fg_color
+      && lhs.bg_color     == rhs.bg_color
+      && lhs.attr.byte[0] == rhs.attr.byte[0]
+      && lhs.attr.byte[1] == rhs.attr.byte[1]
+      && lhs.attr.bit.fullwidth_padding \
+                          == rhs.attr.bit.fullwidth_padding;
+}
+
+//----------------------------------------------------------------------
+inline bool operator != ( const FChar& lhs,
+                          const FChar& rhs )
+{ return ! ( lhs == rhs ); }
+
 }  // namespace finalcut
 
 #endif  // FOPTIATTR_H

src/include/final/foptimove.h

@@ -203,9 +203,6 @@ class FOptiMove final
     bool          isMethod5Faster (int&, int, int, int);
     void          moveByMethod (int, int, int, int, int);
 
-    // Friend function
-    friend void   printDurations (const FOptiMove&);
-
     // Data members
     capability    F_cursor_home{};
     capability    F_carriage_return{};
@@ -236,6 +233,9 @@ class FOptiMove final
     char          move_buf[BUF_SIZE]{'\0'};
     bool          automatic_left_margin{false};
     bool          eat_nl_glitch{false};
+
+    // Friend function
+    friend void   printDurations (const FOptiMove&);
 };
 
 

src/include/final/fpoint.h

@@ -64,14 +64,6 @@ class FPoint
     FPoint& operator += (const FPoint&);
     FPoint& operator -= (const FPoint&);
 
-    friend bool operator == (const FPoint&, const FPoint&);
-    friend bool operator != (const FPoint&, const FPoint&);
-    friend FPoint operator +  (const FPoint&, const FPoint&);
-    friend FPoint operator -  (const FPoint&, const FPoint&);
-    friend FPoint operator -  (const FPoint&);
-    friend std::ostream& operator << (std::ostream&, const FPoint&);
-    friend std::istream& operator >> (std::istream&, FPoint&);
-
     // Accessors
     virtual const FString getClassName();
     int                   getX() const;
@@ -88,10 +80,23 @@ class FPoint
     int&                  x_ref();
     int&                  y_ref();
 
+    // Methods
+    void                  move (int, int);
+    void                  move (const FPoint&);
+
   private:
     // Data members
     int xpos{0};
     int ypos{0};
+
+    // Friend operator functions
+    friend bool operator == (const FPoint&, const FPoint&);
+    friend bool operator != (const FPoint&, const FPoint&);
+    friend FPoint operator +  (const FPoint&, const FPoint&);
+    friend FPoint operator -  (const FPoint&, const FPoint&);
+    friend FPoint operator -  (const FPoint&);
+    friend std::ostream& operator << (std::ostream&, const FPoint&);
+    friend std::istream& operator >> (std::istream&, FPoint&);
 };
 
 
@@ -114,26 +119,6 @@ inline FPoint::FPoint (int x, int y)
   , ypos(y)
 { }
 
-//----------------------------------------------------------------------
-inline bool operator == (const FPoint& p1, const FPoint& p2)
-{ return p1.xpos == p2.xpos && p1.ypos == p2.ypos; }
-
-//----------------------------------------------------------------------
-inline bool operator != (const FPoint& p1, const FPoint& p2)
-{ return p1.xpos != p2.xpos || p1.ypos != p2.ypos; }
-
-//----------------------------------------------------------------------
-inline FPoint operator + (const FPoint& p1, const FPoint& p2)
-{ return FPoint(p1.xpos + p2.xpos, p1.ypos + p2.ypos); }
-
-//----------------------------------------------------------------------
-inline FPoint operator - (const FPoint& p1, const FPoint& p2)
-{ return FPoint(p1.xpos - p2.xpos, p1.ypos - p2.ypos); }
-
-//----------------------------------------------------------------------
-inline FPoint operator - (const FPoint& p)
-{ return FPoint(-p.xpos, -p.ypos); }
-
 //----------------------------------------------------------------------
 inline const FString FPoint::getClassName()
 { return "FPoint"; }
@@ -158,6 +143,28 @@ inline int& FPoint::x_ref()
 inline int& FPoint::y_ref()
 { return ypos; }
 
+
+// FPoint non-member operators
+//----------------------------------------------------------------------
+inline bool operator == (const FPoint& p1, const FPoint& p2)
+{ return p1.xpos == p2.xpos && p1.ypos == p2.ypos; }
+
+//----------------------------------------------------------------------
+inline bool operator != (const FPoint& p1, const FPoint& p2)
+{ return p1.xpos != p2.xpos || p1.ypos != p2.ypos; }
+
+//----------------------------------------------------------------------
+inline FPoint operator + (const FPoint& p1, const FPoint& p2)
+{ return FPoint(p1.xpos + p2.xpos, p1.ypos + p2.ypos); }
+
+//----------------------------------------------------------------------
+inline FPoint operator - (const FPoint& p1, const FPoint& p2)
+{ return FPoint(p1.xpos - p2.xpos, p1.ypos - p2.ypos); }
+
+//----------------------------------------------------------------------
+inline FPoint operator - (const FPoint& p)
+{ return FPoint(-p.xpos, -p.ypos); }
+
 }  // namespace finalcut
 
 #endif  // FPOINT_H

src/include/final/frect.h

@@ -72,13 +72,6 @@ class FRect
     FRect& operator = (const FRect&);
     FRect& operator = (FRect&&);
 
-    friend FRect operator +  (const FRect&, const FSize&);
-    friend FRect operator -  (const FRect&, const FSize&);
-    friend bool  operator == (const FRect&, const FRect&);
-    friend bool  operator != (const FRect&, const FRect&);
-    friend std::ostream& operator << (std::ostream&, const FRect&);
-    friend std::istream& operator >> (std::istream&, FRect&);
-
     // Accessors
     virtual const FString getClassName();
     int                   getX1() const;
@@ -142,6 +135,14 @@ class FRect
     int Y1{0};
     int X2{-1};
     int Y2{-1};
+
+    // Friend operator functions
+    friend FRect operator +  (const FRect&, const FSize&);
+    friend FRect operator -  (const FRect&, const FSize&);
+    friend bool  operator == (const FRect&, const FRect&);
+    friend bool  operator != (const FRect&, const FRect&);
+    friend std::ostream& operator << (std::ostream&, const FRect&);
+    friend std::istream& operator >> (std::istream&, FRect&);
 };
 
 // FRect inline functions

src/include/final/fsize.h

@@ -69,18 +69,6 @@ class FSize
     FSize& operator += (const FSize&);
     FSize& operator -= (const FSize&);
 
-    friend bool operator <  (const FSize&, const FSize&);
-    friend bool operator <= (const FSize&, const FSize&);
-    friend bool operator == (const FSize&, const FSize&);
-    friend bool operator != (const FSize&, const FSize&);
-    friend bool operator >= (const FSize&, const FSize&);
-    friend bool operator >  (const FSize&, const FSize&);
-    friend FSize operator + (const FSize&, const FSize&);
-    friend FSize operator - (const FSize&, const FSize&);
-
-    friend std::ostream& operator << (std::ostream&, const FSize&);
-    friend std::istream& operator >> (std::istream&, FSize&);
-
     // Accessors
     virtual const FString getClassName();
     std::size_t           getWidth() const;
@@ -106,6 +94,19 @@ class FSize
     // Data members
     std::size_t width{0};
     std::size_t height{0};
+
+    // Friend operator functions
+    friend bool operator <  (const FSize&, const FSize&);
+    friend bool operator <= (const FSize&, const FSize&);
+    friend bool operator == (const FSize&, const FSize&);
+    friend bool operator != (const FSize&, const FSize&);
+    friend bool operator >= (const FSize&, const FSize&);
+    friend bool operator >  (const FSize&, const FSize&);
+    friend FSize operator + (const FSize&, const FSize&);
+    friend FSize operator - (const FSize&, const FSize&);
+
+    friend std::ostream& operator << (std::ostream&, const FSize&);
+    friend std::istream& operator >> (std::istream&, FSize&);
 };
 
 // FSize inline functions
@@ -127,6 +128,32 @@ inline FSize::FSize (std::size_t w, std::size_t h)
   , height(h)
 { }
 
+//----------------------------------------------------------------------
+inline const FString FSize::getClassName()
+{ return "FSize"; }
+
+//----------------------------------------------------------------------
+inline std::size_t FSize::getWidth() const
+{ return width; }
+
+//----------------------------------------------------------------------
+inline std::size_t FSize::getHeight() const
+{ return height; }
+
+//----------------------------------------------------------------------
+inline std::size_t FSize::getArea() const
+{ return width * height; }
+
+//----------------------------------------------------------------------
+inline std::size_t& FSize::width_ref()
+{ return width; }
+
+//----------------------------------------------------------------------
+inline std::size_t& FSize::height_ref()
+{ return height; }
+
+
+// FSize non-member operators
 //----------------------------------------------------------------------
 inline bool operator < (const FSize& s1, const FSize& s2)
 { return s1.width < s2.width && s1.height < s2.height; }
@@ -168,30 +195,6 @@ inline FSize operator - (const FSize& s1, const FSize& s2)
   return FSize(w, h);
 }
 
-//----------------------------------------------------------------------
-inline const FString FSize::getClassName()
-{ return "FSize"; }
-
-//----------------------------------------------------------------------
-inline std::size_t FSize::getWidth() const
-{ return width; }
-
-//----------------------------------------------------------------------
-inline std::size_t FSize::getHeight() const
-{ return height; }
-
-//----------------------------------------------------------------------
-inline std::size_t FSize::getArea() const
-{ return width * height; }
-
-//----------------------------------------------------------------------
-inline std::size_t& FSize::width_ref()
-{ return width; }
-
-//----------------------------------------------------------------------
-inline std::size_t& FSize::height_ref()
-{ return height; }
-
 }  // namespace finalcut
 
 #endif  // FSIZE_H

src/include/final/fspinbox.h

@@ -83,6 +83,7 @@ class FSpinBox : public FWidget
     FSpinBox& operator = (const FSpinBox&) = delete;
 
     // Accessors
+    const FString       getClassName() const override;
     sInt64              getValue();
     FString             getPrefix() const;
     FString             getSuffix() const;
@@ -159,6 +160,10 @@ class FSpinBox : public FWidget
 
 
 // FSpinBox inline functions
+//----------------------------------------------------------------------
+inline const FString FSpinBox::getClassName() const
+{ return "FSpinBox"; }
+
 //----------------------------------------------------------------------
 inline sInt64 FSpinBox::getValue()
 { return value; }

src/include/final/fstatusbar.h

@@ -119,15 +119,15 @@ class FStatusKey : public FWidget
     FStatusBar*         getConnectedStatusbar() const;
     void                setConnectedStatusbar (FStatusBar*);
 
-    // Friend class
-    friend class FStatusBar;
-
     // Data members
     FString     text{};
     FStatusBar* bar{nullptr};
     FKey        key{0};
     bool        active{false};
     bool        mouse_focus{false};
+
+    // Friend class
+    friend class FStatusBar;
 };
 
 

src/include/final/fstring.h

@@ -161,22 +161,6 @@ class FString
 
     operator const char* () const { return c_str(); }
 
-    // Non-member operators
-    friend const FString operator + (const FString&, const FString&);
-    friend const FString operator + (const FString&, const wchar_t);
-    friend const FString operator + (const std::wstring&, const FString&);
-    friend const FString operator + (const wchar_t[], const FString&);
-    friend const FString operator + (const std::string&, const FString&);
-    friend const FString operator + (const char[], const FString&);
-    friend const FString operator + (const wchar_t, const FString&);
-    friend const FString operator + (const char, const FString&);
-    friend const FString operator + (const FString&, const char);
-
-    friend std::ostream&  operator << (std::ostream&, const FString&);
-    friend std::istream&  operator >> (std::istream&, FString& s);
-    friend std::wostream& operator << (std::wostream&, const FString&);
-    friend std::wistream& operator >> (std::wistream&, FString&);
-
     // Accessor
     virtual const FString getClassName();
 
@@ -279,6 +263,22 @@ class FString
     mutable char* c_string{nullptr};
     static wchar_t null_char;
     static const wchar_t const_null_char;
+
+    // Friend Non-member operator functions
+    friend const FString operator + (const FString&, const FString&);
+    friend const FString operator + (const FString&, const wchar_t);
+    friend const FString operator + (const std::wstring&, const FString&);
+    friend const FString operator + (const wchar_t[], const FString&);
+    friend const FString operator + (const std::string&, const FString&);
+    friend const FString operator + (const char[], const FString&);
+    friend const FString operator + (const wchar_t, const FString&);
+    friend const FString operator + (const char, const FString&);
+    friend const FString operator + (const FString&, const char);
+
+    friend std::ostream&  operator << (std::ostream&, const FString&);
+    friend std::istream&  operator >> (std::istream&, FString& s);
+    friend std::wostream& operator << (std::wostream&, const FString&);
+    friend std::wistream& operator >> (std::wistream&, FString&);
 };
 
 

src/include/final/ftermbuffer.h

@@ -74,10 +74,6 @@ class FTermBuffer
     FTermBuffer& operator << (const std::wstring&);
     FTermBuffer& operator << (const FColorPair&);
 
-    // Non-member operators
-    friend FCharVector& operator << ( FCharVector&
-                                    , const FTermBuffer& );
-
     // Accessors
     virtual const FString  getClassName() const;
     std::size_t            getLength() const;
@@ -104,6 +100,10 @@ class FTermBuffer
 
   private:
     FCharVector            data{};
+
+    // Non-member operators
+    friend FCharVector& operator << ( FCharVector&
+                                    , const FTermBuffer& );
 };
 
 

src/include/final/ftogglebutton.h

@@ -153,9 +153,6 @@ class FToggleButton : public FWidget
     void                init();
     void                drawText (FString&&, std::size_t);
 
-    // Friend classes
-    friend class FButtonGroup;
-
     // Data members
     FButtonGroup* button_group{nullptr};
     FString       text{};
@@ -163,6 +160,9 @@ class FToggleButton : public FWidget
     std::size_t   button_width{0};  // plus margin spaces
     bool          focus_inside_group{true};
     bool          checked{false};
+
+    // Friend classes
+    friend class FButtonGroup;
 };
 
 // FRadioButton inline functions

src/include/final/ftooltip.h

@@ -92,7 +92,6 @@ class FToolTip : public FWindow
     void                setText (const FString&);
 
     // Methods
-    void                draw() override;
     void                show() override;
     void                hide() override;
 
@@ -102,6 +101,7 @@ class FToolTip : public FWindow
   private:
     // Methods
     void                init();
+    void                draw() override;
     void                calculateDimensions();
     void                adjustSize() override;
 

src/include/final/fvterm.h

@@ -307,6 +307,7 @@ class FVTerm
     virtual void          print (const FPoint&);
     virtual void          print (const FColorPair&);
     virtual FVTerm&       print();
+    static void           flush();
     static void           beep();
     static void           redefineDefaultColors (bool);
 
@@ -361,7 +362,6 @@ class FVTerm
     void                  processTerminalUpdate();
     static void           startTerminalUpdate();
     static void           finishTerminalUpdate();
-    static void           flushOutputBuffer();
     static void           initScreenSettings();
     static void           changeTermSizeFinished();
     static void           exitWithMessage (const FString&)

src/include/final/fwidget.h

@@ -307,6 +307,7 @@ class FWidget : public FVTerm, public FObject
     bool                    isMenuWidget() const;
     bool                    isVisible() const;
     bool                    isShown() const;
+    bool                    isHidden() const;
     bool                    isEnabled() const;
     bool                    hasVisibleCursor() const;
     bool                    hasFocus() const;
@@ -410,6 +411,7 @@ class FWidget : public FVTerm, public FObject
     void                    insufficientSpaceAdjust();
     void                    KeyPressEvent (FKeyEvent*);
     void                    KeyDownEvent (FKeyEvent*);
+    void                    emitWheelCallback (FWheelEvent*);
     void                    setWindowFocus (bool);
     FCallbackPtr            getCallbackPtr (FCallback);
     bool                    changeFocus (FWidget*, FWidget*, fc::FocusTypes);
@@ -919,6 +921,10 @@ inline bool FWidget::isVisible() const
 inline bool FWidget::isShown() const
 { return flags.shown; }
 
+//----------------------------------------------------------------------
+inline bool FWidget::isHidden() const
+{ return flags.hidden; }
+
 //----------------------------------------------------------------------
 inline bool FWidget::isWindowWidget() const
 { return flags.window_widget; }

src/include/final/fwindow.h

@@ -179,6 +179,10 @@ class FWindow : public FWidget
     bool                zoomed{false};
 };
 
+// non-member function forward declarations
+//----------------------------------------------------------------------
+void closeDropDown (FWidget*, const FPoint&);
+
 
 // FWindow inline functions
 //----------------------------------------------------------------------

test/fpoint-test.cpp

@@ -56,6 +56,7 @@ class FPointTest : public CPPUNIT_NS::TestFixture
     void additionTest();
     void subtractionTest();
     void referenceTest();
+    void moveTest();
     void streamInsertionTest();
     void streamExtractionTest();
 
@@ -76,6 +77,7 @@ class FPointTest : public CPPUNIT_NS::TestFixture
     CPPUNIT_TEST (additionTest);
     CPPUNIT_TEST (subtractionTest);
     CPPUNIT_TEST (referenceTest);
+    CPPUNIT_TEST (moveTest);
     CPPUNIT_TEST (streamInsertionTest);
     CPPUNIT_TEST (streamExtractionTest);
 
@@ -311,6 +313,24 @@ void FPointTest::referenceTest()
   CPPUNIT_ASSERT ( p1.getY() == 4 );
 }
 
+//----------------------------------------------------------------------
+void FPointTest::moveTest()
+{
+  finalcut::FPoint p1 (4, 3);
+  CPPUNIT_ASSERT ( p1.getX() == 4 );
+  CPPUNIT_ASSERT ( p1.getY() == 3 );
+
+  const finalcut::FPoint p2 (2, 3);
+  p1.move(p2);
+  CPPUNIT_ASSERT ( p1.getX() == 6 );
+  CPPUNIT_ASSERT ( p1.getY() == 6 );
+
+  p1.move (-2, -7);
+  CPPUNIT_ASSERT ( p1.getX() == 4 );
+  CPPUNIT_ASSERT ( p1.getY() == -1 );
+
+}
+
 //----------------------------------------------------------------------
 void FPointTest::streamInsertionTest()
 {