# HG changeset patch
# User Jacob Dawid <jacob.dawid@googlemail.com>
# Date 1336344834 -7200
# Node ID 97cb9286919c1664a83a61ba416c98fd065a064d
# Parent  fa52c6e84ae0cf4828e4abf1b8f3d6f2c4777f16
Cleaned up code.

* .hgsub: Removed IRC Widget.
* gui.pro: Removed dependency on IRC Widget and removed files.
* class FileEditorMdiSubWindow: Renamed to FileEditor. File editor windows are now independent windows, thus removed the extra close button.
* MainWindow: Removed MDI Area and replaced it with the terminal instead.
* BrowserWidget: Removed browser widget.
* SettingsDialog: Rearranged settings for the editor, removed tab for shortcuts.
* OctaveCallbackThread: Raised update intervals from 0,5s to 1s.
* OctaveLink: Replaced signals names for triggering updates on the symbol table.
* WorkspaceView: Adjusted connect statements to fit the new signal names.

diff --git a/.hgsub b/.hgsub
--- a/.hgsub
+++ b/.hgsub
@@ -1,3 +1,2 @@
 gnulib = [git]git://git.sv.gnu.org/gnulib
 gui/qterminal = [git]https://code.google.com/p/qterminal/
-gui/qirc = [git]https://code.google.com/p/qirc
diff --git a/.hgsubstate b/.hgsubstate
--- a/.hgsubstate
+++ b/.hgsubstate
@@ -1,3 +1,2 @@
 f9813bce2c06a6130a68db4478d1b16ddadaf276 gnulib
-34c2a274a1b607d2616d9903099a0905237c8f80 gui/qirc
 a81f99b9b77d9a402b92463b41c5fdb82324349a gui/qterminal
diff --git a/gui/gui.pro b/gui/gui.pro
--- a/gui/gui.pro
+++ b/gui/gui.pro
@@ -1,2 +1,2 @@
 TEMPLATE = subdirs
-SUBDIRS = qterminal qirc src
+SUBDIRS = qterminal src
diff --git a/gui/src/BrowserWidget.cpp b/gui/src/BrowserWidget.cpp
deleted file mode 100644
--- a/gui/src/BrowserWidget.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-/* OctaveGUI - A graphical user interface for Octave
- * Copyright (C) 2011 Jacob Dawid (jacob.dawid@googlemail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "BrowserWidget.h"
-#include <QVBoxLayout>
-#include <QAction>
-#include <QStyle>
-#include <QApplication>
-
-BrowserWidget::BrowserWidget (QWidget * parent):QWidget (parent)
-{
-  construct ();
-}
-
-void
-BrowserWidget::construct ()
-{
-  QStyle *style = QApplication::style ();
-  m_navigationToolBar = new QToolBar (this);
-  m_webView = new QWebView (this);
-  m_urlLineEdit = new QLineEdit (this);
-  m_statusBar = new QStatusBar (this);
-  m_progressBar = new QProgressBar (this);
-  m_progressBar->setMaximumWidth (150);
-
-  m_webView->setSizePolicy (QSizePolicy::Expanding, QSizePolicy::Expanding);
-  QAction *backAction =
-    new QAction (style->standardIcon (QStyle::SP_ArrowLeft),
-		 "", m_navigationToolBar);
-  QAction *forwardAction =
-    new QAction (style->standardIcon (QStyle::SP_ArrowRight),
-		 "", m_navigationToolBar);
-
-  m_navigationToolBar->addAction (backAction);
-  m_navigationToolBar->addAction (forwardAction);
-  m_navigationToolBar->addWidget (m_urlLineEdit);
-
-  QVBoxLayout *layout = new QVBoxLayout ();
-  layout->addWidget (m_navigationToolBar);
-  layout->addWidget (m_webView);
-
-    QWidget *bottomWidget = new QWidget (this);
-    QHBoxLayout *bottomLineLayout = new QHBoxLayout ();
-    bottomLineLayout->addWidget (m_progressBar);
-    bottomLineLayout->addWidget (m_statusBar);
-    bottomLineLayout->setMargin (0);
-    bottomWidget->setLayout (bottomLineLayout);
-
-  layout->addWidget (bottomWidget);
-  layout->setMargin (2);
-  setLayout (layout);
-
-  connect (backAction, SIGNAL (triggered ()), m_webView, SLOT (back ()));
-  connect (forwardAction, SIGNAL (triggered ()), m_webView,
-	   SLOT (forward ()));
-  connect (m_webView, SIGNAL (urlChanged (QUrl)), this, SLOT (setUrl (QUrl)));
-  connect (m_urlLineEdit, SIGNAL (returnPressed ()), this,
-	   SLOT (jumpToWebsite ()));
-
-  connect (m_webView, SIGNAL (statusBarMessage(QString)),
-           m_statusBar, SLOT (showMessage(QString)));
-  connect (m_webView, SIGNAL (loadProgress(int)),
-           m_progressBar, SLOT (setValue(int)));
-}
-
-void
-BrowserWidget::setUrl (QUrl url)
-{
-  m_urlLineEdit->setText (url.toString ());
-}
-
-void
-BrowserWidget::jumpToWebsite ()
-{
-  QString url = m_urlLineEdit->text ();
-  if (!url.startsWith ("http://") && !url.startsWith ("https://"))
-    url = "http://" + url;
-  load (url);
-}
-
-void
-BrowserWidget::showStatusMessage (QString message)
-{
-  m_statusBar->showMessage (message, 1000);
-}
-
-void
-BrowserWidget::load (QUrl url)
-{
-  m_webView->load (url);
-}
diff --git a/gui/src/BrowserWidget.h b/gui/src/BrowserWidget.h
deleted file mode 100644
--- a/gui/src/BrowserWidget.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/* OctaveGUI - A graphical user interface for Octave
- * Copyright (C) 2011 Jacob Dawid (jacob.dawid@googlemail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef BROWSERMDISUBWINDOW_H
-#define BROWSERMDISUBWINDOW_H
-
-#include <QWidget>
-#include <QToolBar>
-#include <QLineEdit>
-#include <QtWebKit/QWebView>
-#include <QStatusBar>
-#include <QProgressBar>
-
-class BrowserWidget:public QWidget
-{
-  Q_OBJECT
-public:
-  BrowserWidget (QWidget * parent = 0);
-  void load (QUrl url);
-
-public slots:
-  void setUrl (QUrl url);
-  void jumpToWebsite ();
-  void showStatusMessage (QString message);
-
-private:
-  void construct ();
-
-  QLineEdit *m_urlLineEdit;
-  QToolBar *m_navigationToolBar;
-  QWebView *m_webView;
-  QStatusBar *m_statusBar;
-  QProgressBar *m_progressBar;
-};
-
-#endif // BROWSERMDISUBWINDOW_H
diff --git a/gui/src/FileEditorMdiSubWindow.cpp b/gui/src/FileEditor.cpp
rename from gui/src/FileEditorMdiSubWindow.cpp
rename to gui/src/FileEditor.cpp
--- a/gui/src/FileEditorMdiSubWindow.cpp
+++ b/gui/src/FileEditor.cpp
@@ -15,7 +15,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "FileEditorMdiSubWindow.h"
+#include "FileEditor.h"
 #include <QVBoxLayout>
 #include <QApplication>
 #include <QFile>
@@ -25,18 +25,18 @@
 #include <QStyle>
 #include <QTextStream>
 
-FileEditorMdiSubWindow::FileEditorMdiSubWindow (QWidget * parent):QMdiSubWindow
-  (parent)
+FileEditor::FileEditor (QWidget * parent)
+    : QWidget (parent)
 {
   construct ();
 }
 
-FileEditorMdiSubWindow::~FileEditorMdiSubWindow ()
+FileEditor::~FileEditor ()
 {
 }
 
 void
-FileEditorMdiSubWindow::closeEvent(QCloseEvent *event)
+FileEditor::closeEvent(QCloseEvent *event)
 {
   if ( m_mainWindow->isCloseApplication() )
     {
@@ -54,7 +54,7 @@
 }
 
 void
-FileEditorMdiSubWindow::handleMarginClicked(int margin, int line, Qt::KeyboardModifiers state)
+FileEditor::handleMarginClicked(int margin, int line, Qt::KeyboardModifiers state)
 {
   Q_UNUSED (state);
   if ( margin == 1 )  // marker margin
@@ -68,7 +68,7 @@
 }
 
 void
-FileEditorMdiSubWindow::newWindowTitle(bool modified)
+FileEditor::newWindowTitle(bool modified)
 {
   QString title(m_fileName);
   if ( !m_longTitle )
@@ -85,7 +85,7 @@
 }
 
 void
-FileEditorMdiSubWindow::handleCopyAvailable(bool enableCopy)
+FileEditor::handleCopyAvailable(bool enableCopy)
 {
   m_copyAction->setEnabled(enableCopy);
   m_cutAction->setEnabled(enableCopy);
@@ -93,7 +93,7 @@
 
 
 void
-FileEditorMdiSubWindow::openFile ()
+FileEditor::openFile ()
 {
     if (checkFileModified ("Open File",QMessageBox::Cancel)==QMessageBox::Cancel)
       {
@@ -114,14 +114,14 @@
 }
 
 void
-FileEditorMdiSubWindow::loadFile (QString fileName)
+FileEditor::loadFile (QString fileName)
 {
   QFile file (fileName);
   if (!file.open (QFile::ReadOnly))
     {
       QMessageBox::warning (this, tr ("File Editor"),
-			    tr ("Cannot read file %1:\n%2.").arg (fileName).
-			    arg (file.errorString ()));
+        tr ("Cannot read file %1:\n%2.").arg (fileName).
+        arg (file.errorString ()));
       return;
     }
 
@@ -137,12 +137,13 @@
 }
 
 void
-FileEditorMdiSubWindow::newFile ()
+FileEditor::newFile ()
 {
     if (checkFileModified ("Create New File",QMessageBox::Cancel)==QMessageBox::Cancel)
       {
         return; // existing file not saved and creating new file canceled by user
       }
+
     m_fileName = UNNAMED_FILE;
     newWindowTitle (false); // window title (no modification)
     m_editor->setText ("");
@@ -150,7 +151,7 @@
 }
 
 int
-FileEditorMdiSubWindow::checkFileModified (QString msg, int cancelButton)
+FileEditor::checkFileModified (QString msg, int cancelButton)
 {
   int decision = QMessageBox::Yes;
   if (m_editor->isModified ())
@@ -182,13 +183,13 @@
 }
 
 void
-FileEditorMdiSubWindow::saveFile ()
+FileEditor::saveFile ()
 {
   saveFile(m_fileName);
 }
 
 void
-FileEditorMdiSubWindow::saveFile (QString saveFileName)
+FileEditor::saveFile (QString saveFileName)
 {
   // it is a new file with the name "<unnamed>" -> call saveFielAs
   if (saveFileName==UNNAMED_FILE || saveFileName.isEmpty ())
@@ -219,7 +220,7 @@
 }
 
 void
-FileEditorMdiSubWindow::saveFileAs ()
+FileEditor::saveFileAs ()
 {
   QString saveFileName(m_fileName);
   QFileDialog dlg(this);
@@ -247,7 +248,7 @@
 
 // handle the run command
 void
-FileEditorMdiSubWindow::runFile ()
+FileEditor::runFile ()
 {
   if (m_editor->isModified ())
     saveFile(m_fileName);
@@ -258,17 +259,17 @@
 
 // (un)comment selected text
 void
-FileEditorMdiSubWindow::commentSelectedText ()
+FileEditor::commentSelectedText ()
 {
   doCommentSelectedText (true);
 }
 void
-FileEditorMdiSubWindow::uncommentSelectedText ()
+FileEditor::uncommentSelectedText ()
 {
   doCommentSelectedText (false);
 }
 void
-FileEditorMdiSubWindow::doCommentSelectedText (bool comment)
+FileEditor::doCommentSelectedText (bool comment)
 {
   if ( m_editor->hasSelectedText() )
     {
@@ -298,13 +299,13 @@
 
 // remove bookmarks
 void
-FileEditorMdiSubWindow::removeBookmark ()
+FileEditor::removeBookmark ()
 {
   m_editor->markerDeleteAll(MARKER_BOOKMARK);
 }
 // toggle bookmark
 void
-FileEditorMdiSubWindow::toggleBookmark ()
+FileEditor::toggleBookmark ()
 {
   int line,cur;
   m_editor->getCursorPosition(&line,&cur);
@@ -315,7 +316,7 @@
 }
 // goto next bookmark
 void
-FileEditorMdiSubWindow::nextBookmark ()
+FileEditor::nextBookmark ()
 {
   int line,cur,nextline;
   m_editor->getCursorPosition(&line,&cur);
@@ -326,7 +327,7 @@
 }
 // goto previous bookmark
 void
-FileEditorMdiSubWindow::prevBookmark ()
+FileEditor::prevBookmark ()
 {
   int line,cur,prevline;
   m_editor->getCursorPosition(&line,&cur);
@@ -338,7 +339,7 @@
 
 // function for setting the already existing lexer from MainWindow
 void
-FileEditorMdiSubWindow::initEditor (QTerminal* terminalView,
+FileEditor::initEditor (QTerminal* terminalView,
                                     LexerOctaveGui* lexer,
                                     MainWindow* mainWindow)
 {
@@ -348,56 +349,17 @@
   m_mainWindow = mainWindow;  // get the MainWindow for chekcing state at subwindow close
 }
 
-// TODO: Do we still need tool tips in the status bar? Tool tips are now
-//       shown directly at the theme icons
 void
-FileEditorMdiSubWindow::showToolTipNew ()
-{
-  m_statusBar->showMessage ("Create a new file", 2000);
-}
-
-void
-FileEditorMdiSubWindow::showToolTipOpen ()
-{
-  m_statusBar->showMessage ("Open a file", 2000);
-}
-
-void
-FileEditorMdiSubWindow::showToolTipSave ()
-{
-  m_statusBar->showMessage ("Save the file", 2000);
-}
-
-void
-FileEditorMdiSubWindow::showToolTipSaveAs ()
-{
-  m_statusBar->showMessage ("Save the file as", 2000);
-}
-
-void
-FileEditorMdiSubWindow::showToolTipUndo ()
-{
-  m_statusBar->showMessage ("Revert previous changes", 2000);
-}
-
-void
-FileEditorMdiSubWindow::showToolTipRedo ()
-{
-  m_statusBar->showMessage ("Append previous changes", 2000);
-}
-
-void
-FileEditorMdiSubWindow::registerModified (bool modified)
+FileEditor::setModified (bool modified)
 {
   m_modified = modified;
 }
 
 void
-FileEditorMdiSubWindow::construct ()
+FileEditor::construct ()
 {
   QSettings *settings = ResourceManager::instance ()->settings ();
   QStyle *style = QApplication::style ();
-  setWidget (new QWidget ());
 
   m_menuBar = new QMenuBar (this);
   m_toolBar = new QToolBar (this);
@@ -449,9 +411,6 @@
   // The Actions
 
   // Theme icons with QStyle icons as fallback
-  QAction *closeAction = new QAction (
-        QIcon::fromTheme("window-close",style->standardIcon (QStyle::SP_DialogCloseButton)),
-        tr("&Close File"), m_toolBar);
   QAction *newAction = new QAction (
         QIcon::fromTheme("document-new",style->standardIcon (QStyle::SP_FileIcon)),
         tr("&New File"), m_toolBar);
@@ -506,8 +465,6 @@
   uncommentSelectedAction->setShortcut(Qt::CTRL + Qt::Key_T);
 
   // toolbar
-  m_toolBar->setIconSize(QSize(16,16)); // smaller icons (make configurable in user settings?)
-  m_toolBar->addAction (closeAction);
   m_toolBar->addAction (newAction);
   m_toolBar->addAction (openAction);
   m_toolBar->addAction (saveAction);
@@ -528,7 +485,6 @@
   fileMenu->addAction(saveAction);
   fileMenu->addAction(saveAsAction);
   fileMenu->addSeparator();
-  fileMenu->addAction (closeAction);
   m_menuBar->addMenu(fileMenu);
   QMenu *editMenu = new QMenu(tr("&Edit"),m_menuBar);
   editMenu->addAction(undoAction);
@@ -557,9 +513,8 @@
   layout->addWidget (m_editor);
   layout->addWidget (m_statusBar);
   layout->setMargin (2);
-  widget ()->setLayout (layout);
+  setLayout (layout);
 
-  connect (closeAction, SIGNAL (triggered()), this, SLOT (close()));
   connect (newAction, SIGNAL (triggered ()), this, SLOT (newFile ()));
   connect (openAction, SIGNAL (triggered ()), this, SLOT (openFile ()));
   connect (undoAction, SIGNAL (triggered ()), m_editor, SLOT (undo ()));
@@ -577,14 +532,6 @@
   connect (commentSelectedAction, SIGNAL (triggered ()), this, SLOT (commentSelectedText ()));
   connect (uncommentSelectedAction, SIGNAL (triggered ()), this, SLOT (uncommentSelectedText ()));
 
-  // TODO: Do we still need tool tips in the status bar? Tool tips are now
-  //       shown directly at the theme icons
-  connect (newAction, SIGNAL (hovered ()), this, SLOT (showToolTipNew ()));
-  connect (openAction, SIGNAL (hovered ()), this, SLOT (showToolTipOpen ()));
-  connect (undoAction, SIGNAL (hovered ()), this, SLOT (showToolTipUndo ()));
-  connect (redoAction, SIGNAL (hovered ()), this, SLOT (showToolTipRedo ()));
-  connect (saveAction, SIGNAL (hovered ()), this, SLOT (showToolTipSave ()));
-  connect (saveAsAction, SIGNAL (hovered ()), this,SLOT (showToolTipSaveAs ()));
 
   // connect modified signal
   connect (m_editor, SIGNAL (modificationChanged(bool)), this, SLOT (newWindowTitle(bool)) );
diff --git a/gui/src/FileEditorMdiSubWindow.h b/gui/src/FileEditor.h
rename from gui/src/FileEditorMdiSubWindow.h
rename to gui/src/FileEditor.h
--- a/gui/src/FileEditorMdiSubWindow.h
+++ b/gui/src/FileEditor.h
@@ -20,7 +20,7 @@
 
 #include "MainWindow.h"
 
-#include <QMdiSubWindow>
+#include <QWidget>
 #include <QToolBar>
 #include <QAction>
 #include <QMenuBar>
@@ -39,13 +39,13 @@
     MARKER_BREAKPOINT
   };
 
-class FileEditorMdiSubWindow:public QMdiSubWindow
+class FileEditor : public QWidget
 {
 Q_OBJECT
 
 public:
-  FileEditorMdiSubWindow (QWidget * parent = 0);
-  ~FileEditorMdiSubWindow ();
+  FileEditor (QWidget * parent = 0);
+  ~FileEditor ();
   void loadFile (QString fileName);
   void initEditor (QTerminal *terminalView,
                    LexerOctaveGui *lexer,
@@ -59,13 +59,7 @@
   void saveFile (QString fileName);
   void saveFileAs ();
 
-  void showToolTipNew ();
-  void showToolTipOpen ();
-  void showToolTipSave ();
-  void showToolTipSaveAs ();
-  void showToolTipUndo ();
-  void showToolTipRedo ();
-  void registerModified (bool modified);
+  void setModified (bool modified);
 
 protected:
   void closeEvent(QCloseEvent *event);
diff --git a/gui/src/MainWindow.cpp b/gui/src/MainWindow.cpp
--- a/gui/src/MainWindow.cpp
+++ b/gui/src/MainWindow.cpp
@@ -23,13 +23,14 @@
 #include <QFileDialog>
 #include <QMessageBox>
 #include "MainWindow.h"
-#include "FileEditorMdiSubWindow.h"
+#include "FileEditor.h"
 #include "SettingsDialog.h"
 
 #define VERSION_STRING "Octave GUI (0.8.8)"
 
 MainWindow::MainWindow (QWidget * parent):QMainWindow (parent)
 {
+  // We have to set up all our windows, before we finally launch octave.
   construct ();
   OctaveLink::instance ()->launchOctave();
 }
@@ -39,33 +40,23 @@
 }
 
 void
-MainWindow::handleOpenFileRequest (QString fileName)
+MainWindow::openExistingFile (QString fileName)
 {
-  reportStatusMessage (tr ("Opening file."));
-  QPixmap pixmap;
-  if (pixmap.load (fileName))
-    {
-//        ImageViewerMdiSubWindow *subWindow = new ImageViewerMdiSubWindow(pixmap, this);
-//        subWindow->setAttribute(Qt::WA_DeleteOnClose);
-//        m_centralMdiArea->addSubWindow(subWindow);
-//        subWindow->setWindowTitle(fileName);
-    }
-  else
-    {
-      openEditorFile(fileName);
-    }
+  reportStatusMessage (tr ("Opening file.."));
+  newEditorWindow(fileName);
 }
 
 void
-MainWindow::openEditor ()
+MainWindow::newFile ()
 {
-  openEditorFile(QString());
+  newEditorWindow(QString());
 }
+
 void
-MainWindow::openEditorFile (QString fileName)
+MainWindow::newEditorWindow (QString fileName)
 {
-  FileEditorMdiSubWindow *subWindow = new FileEditorMdiSubWindow (m_centralMdiArea);
-  subWindow->setAttribute (Qt::WA_DeleteOnClose);
+  FileEditor *fileEditor = new FileEditor ();
+  fileEditor->setAttribute (Qt::WA_DeleteOnClose);
   // check whether lexer is already prepared and prepare it if not
   if ( m_lexer == NULL )
     {
@@ -97,12 +88,12 @@
          }
        m_lexerAPI->prepare();           // prepare API info ... this make take some time
     }
-  subWindow->initEditor(m_terminalView, m_lexer, this);   // init necessary informations for editor
+  fileEditor->initEditor(m_terminalView, m_lexer, this);   // init necessary informations for editor
 
   if ( fileName.isEmpty() )
-    subWindow->newFile ();
+    fileEditor->newFile ();
   else
-    subWindow->loadFile (fileName);
+    fileEditor->loadFile (fileName);
 }
 
 
@@ -113,29 +104,6 @@
 }
 
 void
-MainWindow::openWebPage (QString url)
-{
-  m_documentationWidget->load (QUrl (url));
-}
-
-void
-MainWindow::openChat ()
-{
-    if (!m_ircWidget)
-      {
-        m_ircWidget = new QIRCWidget ();
-        m_ircWidget->setWindowTitle ("Chat");
-        m_ircWidget->connectToServer ("irc.freenode.net", "Octave-GUI-User", "#octave");
-      }
-
-    if (!m_ircWidget->isVisible ())
-      {
-          m_ircWidget->setVisible (true);
-          m_ircWidget->raise ();
-      }
-}
-
-void
 MainWindow::handleSaveWorkspaceRequest ()
 {
   QString selectedFile =
@@ -170,12 +138,6 @@
 }
 
 void
-MainWindow::alignMdiWindows ()
-{
-  m_centralMdiArea->tileSubWindows ();
-}
-
-void
 MainWindow::openBugTrackerPage ()
 {
   QDesktopServices::openUrl (QUrl ("http://savannah.gnu.org/bugs/?group=octave"));
@@ -241,20 +203,13 @@
 }
 
 void
-MainWindow::showAboutQt ()
-{
-  QMessageBox::aboutQt (this);
-}
-
-void
 MainWindow::closeEvent (QCloseEvent * closeEvent)
 {
   reportStatusMessage (tr ("Saving data and shutting down."));
   writeSettings ();
   m_closeApplication = true;  // inform editor window that whole application is closed
   OctaveLink::instance ()->terminateOctave();
-  m_centralMdiArea->closeAllSubWindows();   // send close events to subwindows
-                                            // (editor files can be saved!)
+
   QMainWindow::closeEvent (closeEvent);
 }
 
@@ -264,7 +219,6 @@
   QSettings *settings = ResourceManager::instance ()->settings ();
   restoreGeometry (settings->value ("MainWindow/geometry").toByteArray ());
   restoreState (settings->value ("MainWindow/windowState").toByteArray ());
-  m_centralMdiArea->restoreGeometry (settings->value ("MdiArea/geometry").toByteArray ());
   emit settingsChanged ();
 }
 
@@ -274,22 +228,15 @@
   QSettings *settings = ResourceManager::instance ()->settings ();
   settings->setValue ("MainWindow/geometry", saveGeometry ());
   settings->setValue ("MainWindow/windowState", saveState ());
-  settings->setValue ("MdiArea/geometry", m_centralMdiArea->saveGeometry ());
 }
 
 void
 MainWindow::construct ()
 {
+  // TODO: Check this.
   m_closeApplication = false;   // flag for editor files when closed
   setWindowIcon (ResourceManager::instance ()->icon (ResourceManager::Octave));
 
-  m_ircWidget = 0;
-
-  // Initialize MDI area.
-  m_centralMdiArea = new QMdiArea (this);
-  m_centralMdiArea->setObjectName ("CentralMdiArea");
-  m_centralMdiArea->setViewMode (QMdiArea::TabbedView);
-
   // Setup dockable widgets and the status bar.
   m_workspaceView = new WorkspaceView (this);
   m_workspaceView->setStatusTip (tr ("View the variables in the active workspace."));
@@ -299,33 +246,9 @@
   m_filesDockWidget->setStatusTip (tr ("Browse your files."));
   m_statusBar = new QStatusBar (this);
 
-  // Documentation subwindow.
-  m_documentationWidget = new BrowserWidget (this);
-  m_documentationWidgetSubWindow = new NonClosableMdiSubWindow (this);
-  m_documentationWidgetSubWindow->setWidget (m_documentationWidget);
-  m_centralMdiArea->addSubWindow (m_documentationWidgetSubWindow, Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint);
-
-  m_documentationWidgetSubWindow->setObjectName ("DocumentationWidgetSubWindow");
-  m_documentationWidgetSubWindow->setWindowTitle (tr ("Documentation"));
-  m_documentationWidgetSubWindow
-      ->setWindowIcon (ResourceManager::instance ()->icon (ResourceManager::Documentation));
-  m_documentationWidgetSubWindow->setFocusProxy (m_documentationWidget);
-  m_documentationWidgetSubWindow->setStatusTip (tr ("Browse the Octave documentation for help."));
-  m_documentationWidgetSubWindow->setMinimumSize (300, 300);
-
   // Octave Terminal subwindow.
   m_terminalView = new QTerminal(this);
-  m_terminalViewSubWindow = new NonClosableMdiSubWindow (this);
-  m_terminalViewSubWindow->setWidget (m_terminalView);
-  m_centralMdiArea->addSubWindow (m_terminalViewSubWindow, Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint);
-
-  m_terminalViewSubWindow->setObjectName ("OctaveTerminalSubWindow");
-  m_terminalViewSubWindow->setWindowTitle (tr ("Terminal"));
-  m_terminalViewSubWindow
-      ->setWindowIcon (ResourceManager::instance ()->icon (ResourceManager::Terminal));
-  m_terminalViewSubWindow->setFocusProxy (m_terminalView);
-  m_terminalViewSubWindow->setStatusTip (tr ("Enter your commands into the Octave terminal."));
-  m_terminalViewSubWindow->setMinimumSize (300, 300);
+  setCentralWidget (m_terminalView);
 
   m_lexer = NULL;  // initialise the empty lexer for the edtiors
 
@@ -336,8 +259,6 @@
 
   QMenu *interfaceMenu = menuBar ()->addMenu (tr ("Interface"));
 
-  QAction *alignWindowsAction = interfaceMenu->addAction (tr ("Align Windows"));
-  interfaceMenu->addSeparator ();
   QAction *showWorkspaceAction = interfaceMenu->addAction (tr ("Workspace"));
   showWorkspaceAction->setCheckable (true);
 
@@ -357,25 +278,19 @@
   QAction *clearWorkspaceAction = workspaceMenu->addAction (tr ("Clear"));
 
   QMenu *communityMenu = menuBar ()->addMenu (tr ("Community"));
-  QAction *openChatAction = communityMenu->addAction (tr ("Chat"));
-  communityMenu->addSeparator();
   QAction *reportBugAction = communityMenu->addAction (tr ("Report Bug"));
   QAction *agoraAction = communityMenu->addAction (tr ("Agora"));
   QAction *octaveForgeAction = communityMenu->addAction (tr ("Octave Forge"));
   communityMenu->addSeparator ();
   QAction *aboutOctaveAction = communityMenu->addAction (tr ("About Octave"));
-  QAction *aboutQt = communityMenu->addAction (tr ("About Qt"));
 
   connect (settingsAction, SIGNAL (triggered ()), this, SLOT (processSettingsDialogRequest ()));
   connect (exitAction, SIGNAL (triggered ()), this, SLOT (close ()));
-  connect (alignWindowsAction, SIGNAL (triggered ()), this, SLOT (alignMdiWindows ()));
-  connect (openEditorAction, SIGNAL (triggered ()), this, SLOT (openEditor ()));
-  connect (openChatAction, SIGNAL (triggered ()), this, SLOT (openChat ()));
+  connect (openEditorAction, SIGNAL (triggered ()), this, SLOT (newFile ()));
   connect (reportBugAction, SIGNAL (triggered ()), this, SLOT (openBugTrackerPage ()));
   connect (agoraAction, SIGNAL (triggered ()), this, SLOT (openAgoraPage ()));
   connect (octaveForgeAction, SIGNAL (triggered ()), this, SLOT (openOctaveForgePage ()));
   connect (aboutOctaveAction, SIGNAL (triggered ()), this, SLOT (showAboutOctave ()));
-  connect (aboutQt, SIGNAL (triggered ()), this, SLOT (showAboutQt ()));
 
   connect (showWorkspaceAction, SIGNAL (toggled (bool)), m_workspaceView, SLOT (setShown (bool)));
   connect (m_workspaceView, SIGNAL (activeChanged (bool)), showWorkspaceAction, SLOT (setChecked (bool)));
@@ -388,7 +303,7 @@
   //connect (this, SIGNAL (settingsChanged ()), m_historyDockWidget, SLOT (noticeSettings ()));
   connect (this, SIGNAL (settingsChanged ()), m_filesDockWidget, SLOT (noticeSettings ()));
 
-  connect (m_filesDockWidget, SIGNAL (openFile (QString)), this, SLOT (handleOpenFileRequest (QString)));
+  connect (m_filesDockWidget, SIGNAL (openFile (QString)), this, SLOT (openExistingFile (QString)));
   connect (m_historyDockWidget, SIGNAL (information (QString)), this, SLOT (reportStatusMessage (QString)));
   connect (m_historyDockWidget, SIGNAL (commandDoubleClicked (QString)), this, SLOT (handleCommandDoubleClicked (QString)));
   connect (saveWorkspaceAction, SIGNAL (triggered ()), this, SLOT (handleSaveWorkspaceRequest ()));
@@ -397,7 +312,6 @@
 
   setWindowTitle (QString (VERSION_STRING));
 
-  setCentralWidget (m_centralMdiArea);
   addDockWidget (Qt::LeftDockWidgetArea, m_workspaceView);
   addDockWidget (Qt::LeftDockWidgetArea, m_historyDockWidget);
   addDockWidget (Qt::RightDockWidgetArea, m_filesDockWidget);
@@ -405,6 +319,5 @@
 
   readSettings ();
   updateTerminalFont();
-  openWebPage ("http://www.gnu.org/software/octave/doc/interpreter/");
 }
 
diff --git a/gui/src/MainWindow.h b/gui/src/MainWindow.h
--- a/gui/src/MainWindow.h
+++ b/gui/src/MainWindow.h
@@ -18,6 +18,7 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
+// Qt includes
 #include <QtGui/QMainWindow>
 #include <QThread>
 #include <QTabWidget>
@@ -25,32 +26,22 @@
 #include <QStatusBar>
 #include <QToolBar>
 #include <QQueue>
-#include <Qsci/qsciapis.h>
 #include <QMdiSubWindow>
 #include <QCloseEvent>
+
+// QScintilla includes
+#include <Qsci/qsciapis.h>
+#include "lexer/lexeroctavegui.h"
+
+// QTerminal includes
+#include "QTerminal.h"
+
+// Own includes
 #include "ResourceManager.h"
 #include "OctaveLink.h"
 #include "WorkspaceView.h"
 #include "HistoryDockWidget.h"
 #include "FilesDockWidget.h"
-#include "BrowserWidget.h"
-#include "lexer/lexeroctavegui.h"
-#include "QTerminal.h"
-#include "QIRCWidget.h"
-
-class NonClosableMdiSubWindow : public QMdiSubWindow
-{
-  Q_OBJECT
-public:
-  explicit NonClosableMdiSubWindow (QWidget *parent = 0)
-    : QMdiSubWindow (parent) { }
-  virtual ~NonClosableMdiSubWindow () { }
-protected:
-  void closeEvent (QCloseEvent *closeEvent)
-  {
-    closeEvent->ignore ();
-  }
-};
 
 /**
   * \class MainWindow
@@ -85,23 +76,19 @@
   void settingsChanged ();
 
 public slots:
-  void handleOpenFileRequest (QString fileName);
+  void openExistingFile (QString fileName);
   void reportStatusMessage (QString statusMessage);
-  void openWebPage (QString url);
-  void openChat ();
   void handleSaveWorkspaceRequest ();
   void handleLoadWorkspaceRequest ();
   void handleClearWorkspaceRequest ();
   void handleCommandDoubleClicked (QString command);
-  void alignMdiWindows ();
-  void openEditor ();
-  void openEditorFile (QString fileName);
+  void newFile ();
+  void newEditorWindow (QString fileName);
   void openBugTrackerPage ();
   void openAgoraPage ();
   void openOctaveForgePage ();
   void processSettingsDialogRequest ();
   void showAboutOctave ();
-  void showAboutQt ();
   void updateTerminalFont ();
 
 protected:
@@ -112,15 +99,8 @@
 private:
   void construct ();
   void establishOctaveLink ();
-  QMdiArea *m_centralMdiArea;
 
-  // Mdi sub windows.
   QTerminal *m_terminalView;
-  BrowserWidget *m_documentationWidget;
-  QIRCWidget *m_ircWidget;
-
-  NonClosableMdiSubWindow *m_terminalViewSubWindow;
-  NonClosableMdiSubWindow *m_documentationWidgetSubWindow;
 
   // Dock widgets.
   WorkspaceView *m_workspaceView;
diff --git a/gui/src/SettingsDialog.cpp b/gui/src/SettingsDialog.cpp
--- a/gui/src/SettingsDialog.cpp
+++ b/gui/src/SettingsDialog.cpp
@@ -56,33 +56,6 @@
   ui->proxyPort->setText (settings->value ("proxyPort").toString ());
   ui->proxyUserName->setText (settings->value ("proxyUserName").toString ());
   ui->proxyPassword->setText (settings->value ("proxyPassword").toString ());
-
-  // Short cuts
-  QStringList headerLabels;
-  headerLabels << "Modifier" << "Key" << "Action";
-  ui->shortcutTableWidget->setColumnCount (3);
-  ui->shortcutTableWidget->setRowCount (10);
-  ui->shortcutTableWidget->horizontalHeader ()->setStretchLastSection (true);
-  ui->shortcutTableWidget->setHorizontalHeaderLabels (headerLabels);
-  ui->shortcutTableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);
-  ui->shortcutTableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
-
-  /*
-  newAction->setShortcut(QKeySequence::New);
-  openAction->setShortcut(QKeySequence::Open);
-  saveAction->setShortcut(QKeySequence::Save);
-  saveAsAction->setShortcut(QKeySequence::SaveAs);
-  undoAction->setShortcut(QKeySequence::Undo);
-  redoAction->setShortcut(QKeySequence::Redo);
-  m_copyAction->setShortcut(QKeySequence::Copy);
-  m_cutAction->setShortcut(QKeySequence::Cut);
-  pasteAction->setShortcut(QKeySequence::Paste);
-  runAction->setShortcut(Qt::Key_F5);
-  nextBookmarkAction->setShortcut(Qt::Key_F2);
-  prevBookmarkAction->setShortcut(Qt::SHIFT + Qt::Key_F2);
-  toggleBookmarkAction->setShortcut(Qt::Key_F7);
-  commentSelectedAction->setShortcut(Qt::CTRL + Qt::Key_R);
-  uncommentSelectedAction->setShortcut(Qt::CTRL + Qt::Key_T);*/
 }
 
 SettingsDialog::~SettingsDialog ()
diff --git a/gui/src/SettingsDialog.ui b/gui/src/SettingsDialog.ui
--- a/gui/src/SettingsDialog.ui
+++ b/gui/src/SettingsDialog.ui
@@ -34,93 +34,62 @@
      <property name="currentIndex">
       <number>0</number>
      </property>
-     <widget class="QWidget" name="tab_4">
-      <attribute name="title">
-       <string>Interface</string>
-      </attribute>
-      <layout class="QVBoxLayout" name="verticalLayout_6">
-       <item>
-        <widget class="QLabel" name="label_10">
-         <property name="text">
-          <string>Shortcuts:</string>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QTableWidget" name="shortcutTableWidget">
-         <property name="enabled">
-          <bool>false</bool>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_2">
-         <item>
-          <widget class="QPushButton" name="addShortcutButton">
-           <property name="enabled">
-            <bool>false</bool>
-           </property>
-           <property name="text">
-            <string>Add</string>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="QPushButton" name="removeShortCutButton">
-           <property name="enabled">
-            <bool>false</bool>
-           </property>
-           <property name="text">
-            <string>Remove</string>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <spacer name="horizontalSpacer_2">
-           <property name="orientation">
-            <enum>Qt::Horizontal</enum>
-           </property>
-           <property name="sizeHint" stdset="0">
-            <size>
-             <width>40</width>
-             <height>20</height>
-            </size>
-           </property>
-          </spacer>
-         </item>
-        </layout>
-       </item>
-      </layout>
-     </widget>
      <widget class="QWidget" name="tab">
       <attribute name="title">
        <string>Editor</string>
       </attribute>
-      <layout class="QVBoxLayout" name="verticalLayout_5">
+      <layout class="QVBoxLayout" name="verticalLayout_6">
        <item>
-        <layout class="QVBoxLayout" name="verticalLayout_7">
+        <layout class="QVBoxLayout" name="verticalLayout_5">
          <item>
-          <layout class="QHBoxLayout" name="horizontalLayout_3">
+          <layout class="QHBoxLayout" name="horizontalLayout_4">
            <item>
-            <widget class="QCheckBox" name="useCustomFileEditor">
-             <property name="enabled">
-              <bool>true</bool>
+            <widget class="QLabel" name="label_8">
+             <property name="text">
+              <string>Font</string>
              </property>
-             <property name="text">
-              <string>Use custom file editor:</string>
+            </widget>
+           </item>
+           <item>
+            <widget class="QFontComboBox" name="editor_fontName">
+             <property name="editable">
+              <bool>false</bool>
              </property>
             </widget>
            </item>
            <item>
-            <widget class="QLineEdit" name="customFileEditor">
-             <property name="enabled">
-              <bool>false</bool>
-             </property>
+            <widget class="QLabel" name="label_9">
              <property name="text">
-              <string>emacs</string>
+              <string>Font Size</string>
              </property>
             </widget>
            </item>
+           <item>
+            <widget class="QSpinBox" name="editor_fontSize">
+             <property name="minimum">
+              <number>2</number>
+             </property>
+             <property name="maximum">
+              <number>96</number>
+             </property>
+             <property name="value">
+              <number>10</number>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <spacer name="horizontalSpacer_4">
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+             <property name="sizeHint" stdset="0">
+              <size>
+               <width>40</width>
+               <height>20</height>
+              </size>
+             </property>
+            </spacer>
+           </item>
           </layout>
          </item>
          <item>
@@ -172,30 +141,74 @@
         </layout>
        </item>
        <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_4">
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout">
          <item>
-          <widget class="QLabel" name="label_8">
+          <widget class="QCheckBox" name="useCustomFileEditor">
+           <property name="enabled">
+            <bool>true</bool>
+           </property>
+           <property name="text">
+            <string>Use custom file editor:</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLineEdit" name="customFileEditor">
+           <property name="enabled">
+            <bool>false</bool>
+           </property>
+           <property name="text">
+            <string>emacs</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="tab_5">
+      <attribute name="title">
+       <string>Terminal</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_5">
+         <item>
+          <widget class="QLabel" name="label_11">
            <property name="text">
             <string>Font</string>
            </property>
           </widget>
          </item>
          <item>
-          <widget class="QFontComboBox" name="editor_fontName">
+          <widget class="QFontComboBox" name="terminal_fontName">
            <property name="editable">
             <bool>false</bool>
            </property>
           </widget>
          </item>
          <item>
-          <widget class="QLabel" name="label_9">
+          <widget class="QLabel" name="label_12">
            <property name="text">
             <string>Font Size</string>
            </property>
           </widget>
          </item>
          <item>
-          <widget class="QSpinBox" name="editor_fontSize">
+          <widget class="QSpinBox" name="terminal_fontSize">
            <property name="minimum">
             <number>2</number>
            </property>
@@ -208,7 +221,7 @@
           </widget>
          </item>
          <item>
-          <spacer name="horizontalSpacer_4">
+          <spacer name="horizontalSpacer_5">
            <property name="orientation">
             <enum>Qt::Horizontal</enum>
            </property>
@@ -223,84 +236,20 @@
         </layout>
        </item>
        <item>
-        <spacer name="verticalSpacer">
+        <spacer name="verticalSpacer_3">
          <property name="orientation">
           <enum>Qt::Vertical</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
            <width>20</width>
-           <height>40</height>
+           <height>321</height>
           </size>
          </property>
         </spacer>
        </item>
       </layout>
      </widget>
-     <widget class="QWidget" name="tab_5">
-      <attribute name="title">
-       <string>Terminal</string>
-      </attribute>
-      <widget class="QWidget" name="layoutWidget">
-       <property name="geometry">
-        <rect>
-         <x>10</x>
-         <y>10</y>
-         <width>436</width>
-         <height>22</height>
-        </rect>
-       </property>
-       <layout class="QHBoxLayout" name="horizontalLayout_5">
-        <item>
-         <widget class="QLabel" name="label_11">
-          <property name="text">
-           <string>Font</string>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <widget class="QFontComboBox" name="terminal_fontName">
-          <property name="editable">
-           <bool>false</bool>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <widget class="QLabel" name="label_12">
-          <property name="text">
-           <string>Font Size</string>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <widget class="QSpinBox" name="terminal_fontSize">
-          <property name="minimum">
-           <number>2</number>
-          </property>
-          <property name="maximum">
-           <number>96</number>
-          </property>
-          <property name="value">
-           <number>10</number>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <spacer name="horizontalSpacer_5">
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="sizeHint" stdset="0">
-           <size>
-            <width>40</width>
-            <height>20</height>
-           </size>
-          </property>
-         </spacer>
-        </item>
-       </layout>
-      </widget>
-     </widget>
      <widget class="QWidget" name="tab_2">
       <attribute name="title">
        <string>File Browser</string>
diff --git a/gui/src/WorkspaceView.cpp b/gui/src/WorkspaceView.cpp
--- a/gui/src/WorkspaceView.cpp
+++ b/gui/src/WorkspaceView.cpp
@@ -59,8 +59,10 @@
   m_variablesTreeWidget->setAlternatingRowColors (true);
   m_variablesTreeWidget->setAnimated (true);
 
-  connect (this, SIGNAL (visibilityChanged(bool)), this, SLOT(handleVisibilityChanged(bool)));
-  connect (OctaveLink::instance(), SIGNAL (symbolTableChanged()), this, SLOT (fetchSymbolTable()));
+  connect (this, SIGNAL (visibilityChanged (bool)),
+           this, SLOT(handleVisibilityChanged (bool)));
+  connect (OctaveLink::instance(), SIGNAL (updateSymbolTable ()),
+           this, SLOT (fetchSymbolTable ()));
 }
 
 void
@@ -68,7 +70,7 @@
 {
   treeItem->setData (0, 0, QString (symbolRecord.name ().c_str ()));
   treeItem->setData (1, 0,
-		     QString (symbolRecord.varval ().type_name ().c_str ()));
+             QString (symbolRecord.varval ().type_name ().c_str ()));
   treeItem->setData (2, 0,
 		     OctaveLink::octaveValueAsQString (symbolRecord.
 						       varval ()));
diff --git a/gui/src/backend/OctaveCallbackThread.cpp b/gui/src/backend/OctaveCallbackThread.cpp
--- a/gui/src/backend/OctaveCallbackThread.cpp
+++ b/gui/src/backend/OctaveCallbackThread.cpp
@@ -39,9 +39,9 @@
   bool running = true;
   while (running)
     {
-      OctaveLink::instance ()->emitSymbolTableChanged();
-      OctaveLink::instance ()->updateHistoryModel ();
-      usleep (500000);
+      OctaveLink::instance ()->triggerUpdateSymbolTable ();
+      OctaveLink::instance ()->triggerUpdateHistoryModel ();
+      usleep (1000000);
 
       m_runningSemaphore->acquire ();
       running = m_running;
diff --git a/gui/src/backend/OctaveLink.cpp b/gui/src/backend/OctaveLink.cpp
--- a/gui/src/backend/OctaveLink.cpp
+++ b/gui/src/backend/OctaveLink.cpp
@@ -121,12 +121,15 @@
   std::list < SymbolRecord >::iterator iterator;
   for (iterator = allVariables.begin (); iterator != allVariables.end ();
        iterator++)
-    m_symbolTableBuffer.append (iterator->dup());
+    {
+      SymbolRecord s = iterator->dup ();
+      m_symbolTableBuffer.append (s);
+    }
   return m_symbolTableBuffer;
 }
 
 void
-OctaveLink::updateHistoryModel ()
+OctaveLink::triggerUpdateHistoryModel ()
 {
   // Determine the client's (our) history length and the one of the server.
   int clientHistoryLength = m_historyModel->rowCount ();
diff --git a/gui/src/backend/OctaveLink.h b/gui/src/backend/OctaveLink.h
--- a/gui/src/backend/OctaveLink.h
+++ b/gui/src/backend/OctaveLink.h
@@ -111,12 +111,12 @@
     */
   QList < SymbolRecord > copyCurrentSymbolTable ();
 
-  void updateHistoryModel ();
+  void triggerUpdateHistoryModel ();
   QStringListModel *historyModel ();
-  void emitSymbolTableChanged() { emit symbolTableChanged(); }
+  void triggerUpdateSymbolTable() { emit updateSymbolTable(); }
 
 signals:
-  void symbolTableChanged ();
+  void updateSymbolTable ();
 
 private:
   OctaveLink ();
diff --git a/gui/src/src.pro b/gui/src/src.pro
--- a/gui/src/src.pro
+++ b/gui/src/src.pro
@@ -31,7 +31,6 @@
 win32-msvc*: include(msvc.pri)
 
 LIBS                += -lqscintilla2  \
-                       -L../qirc/libqirc/$$LIBDIR_SUFFIX -lqirc \
                        -L../qterminal/libqterminal/$$LIBDIR_SUFFIX -lqterminal \
                         $$system(mkoctfile -p LIBS) \
                         $$system(mkoctfile -p OCTAVE_LIBS)
@@ -41,7 +40,7 @@
 }
 
 # Includepaths and libraries to link against:
-INCLUDEPATH         += . backend ../qterminal/libqterminal ../qirc/libqirc \
+INCLUDEPATH         += . backend ../qterminal/libqterminal \
                        $$system(mkoctfile -p INCFLAGS)
 INCFLAGS            += $$system(mkoctfile -p INCFLAGS)
 mac {
@@ -80,8 +79,6 @@
     WorkspaceView.cpp \
     HistoryDockWidget.cpp \
     FilesDockWidget.cpp \
-    FileEditorMdiSubWindow.cpp \
-    BrowserWidget.cpp \
     SettingsDialog.cpp \
     OctaveGUI.cpp \
     ResourceManager.cpp \
@@ -90,7 +87,8 @@
     backend/OctaveLink.cpp \
     backend/OctaveMainThread.cpp \
     backend/ReadlineAdapter.cpp \
-    WelcomeWizard.cpp
+    WelcomeWizard.cpp \
+    FileEditor.cpp
 
 HEADERS += \
     lexer/lexeroctavegui.h \
@@ -98,8 +96,6 @@
     WorkspaceView.h \
     HistoryDockWidget.h \
     FilesDockWidget.h \
-    FileEditorMdiSubWindow.h \
-    BrowserWidget.h \
     SettingsDialog.h \
     ResourceManager.h \
     CommandLineParser.h \
@@ -107,7 +103,8 @@
     backend/OctaveLink.h \
     backend/OctaveMainThread.h \
     backend/ReadlineAdapter.h \
-    WelcomeWizard.h
+    WelcomeWizard.h \
+    FileEditor.h
 
 FORMS += \
     SettingsDialog.ui \