Add UiGuiHighlighter code

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

7 files changed, 554 insertions, 682 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 901feca..84845f3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -34,6 +34,7 @@ set( ${target}_SRCS
 	SettingsPaths.cpp
 	TemplateBatchScript.cpp
 	UiGuiErrorMessage.cpp
+	UiGuiHighlighter.cpp
 	UiGuiIniFileParser.cpp
 	UiGuiVersion.cpp
 
diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index 899a029..851037b 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -32,7 +32,7 @@
 #include "UiGuiVersion.h"
 #include "ToolBarWidget.h"
 ///-- #include "AboutDialogGraphicsView.h"
-///-- #include "UiGuiHighlighter.h"
+#include "UiGuiHighlighter.h"
 
 #include <tqaction.h>
 #include <tqapplication.h>
@@ -79,10 +79,11 @@ MainWindow::MainWindow(TQString file2OpenOnStart, TQWidget *parent) :
         MainWindowBase(parent), m_aboutDialog(nullptr), m_qSciSourceCodeEditor(nullptr),
         m_uiGuiTranslator(nullptr), m_textEditLineColumnInfoLabel(nullptr),
         m_oldLinesNumber(0), m_openEncodingActions(), m_saveEncodingActions(),
-				m_encodingActionGroup(nullptr), m_saveEncodedActionGroup(nullptr),
-				m_highlighterActionGroup(nullptr), m_documentModified(false), m_previewToggled(true),
-				m_indentHandler(nullptr), m_centralSplitter(nullptr), m_settingsDialog(nullptr)
-///- 		m_highlighter(nullptr), _aboutDialogGraphicsView(nullptr)
+        m_encodingActionGroup(nullptr), m_saveEncodedActionGroup(nullptr),
+        m_highlighterActionGroup(nullptr), m_documentModified(false), m_previewToggled(true),
+        m_indentHandler(nullptr), m_centralSplitter(nullptr), m_settingsDialog(nullptr),
+        m_highlighter(nullptr), m_highlightingActions()
+///_aboutDialogGraphicsView(nullptr)
 ///- 		m_textEditVScrollBar(nullptr), _toolBarWidget(nullptr)
 {
 	// Init of some variables.
@@ -113,7 +114,6 @@ MainWindow::MainWindow(TQString file2OpenOnStart, TQWidget *parent) :
 	createEncodingMenu();
 	createHighlighterMenu();
 
-
 	// Generate about dialog box
 	//m_aboutDialog = new AboutDialog(this, WStyle_Splash);
 	m_aboutDialog = new AboutDialog(this);
@@ -135,7 +135,7 @@ MainWindow::MainWindow(TQString file2OpenOnStart, TQWidget *parent) :
 		loadLastOpenedFile();
 	}
 
-	updateSourceView();
+	updateSyntaxHighlighting();
 
 ///--	// Enable accept dropping of files.
 ///--	setAcceptDrops(true);
@@ -271,7 +271,7 @@ void MainWindow::initToolBar()
 	m_toolBarWidget = new ToolBarWidget(toolBar);
 
 	// Connect the tool bar widgets to their functions.
-///-- 	_settings->registerObjectProperty(_toolBarWidget->cbEnableSyntaxHL, "checked",
+///-- 	m_settings->registerObjectProperty(_toolBarWidget->cbEnableSyntaxHL, "checked",
 ///-- 	        "SyntaxHighlightingEnabled");
 	m_toolBarWidget->cbEnableSyntaxHL->hide();
 
@@ -312,7 +312,7 @@ void MainWindow::initTextEditor()
 		exit(1);
 	}
 
-	// Make some _settings for the TQScintilla widget.
+	// Make some settings for the TQScintilla widget.
 	m_qSciSourceCodeEditor->setUtf8(true);
 	m_qSciSourceCodeEditor->setMarginLineNumbers(1, true);
 	m_qSciSourceCodeEditor->setMarginWidth(1, TQString("10000"));
@@ -351,24 +351,22 @@ void MainWindow::initTextEditor()
 	numberOfLinesChanged();
 }
 
+void MainWindow::updateSyntaxHighlighting()
+{
+  turnHighlightOnOff(actionEnableSyntaxHighlighting->isOn());
+}
+
 /*
-    \brief Create and init the syntax m_highlighter and set it to use the TQScintilla edit component.
+    \brief Create and init the syntax highlighter and set it to use the TQScintilla edit component.
  */
 void MainWindow::initSyntaxHighlighter()
 {
-///-- 	// Create the highlighter.
-///-- 	m_highlighter = new UiGuiHighlighter(qSciSourceCodeEditor);
-///-- 
-///-- 	// Handle if syntax highlighting is enabled
-///-- 	bool syntaxHighlightningEnabled = m_settings->getValueByName("SyntaxHighlightningEnabled").toBool();
-///-- 	if (syntaxHighlightningEnabled)
-///-- 	{
-///-- 		highlighter->turnHighlightOn();
-///-- 	}
-///-- 	else
-///-- 	{
-///-- 		highlighter->turnHighlightOff();
-///-- 	}
+	// Create the highlighter.
+	m_highlighter = new UiGuiHighlighter(m_qSciSourceCodeEditor);
+
+	// Handle if syntax highlighting is enabled
+	bool syntaxHighlightningEnabled = m_settings->getValueByName("SyntaxHighlightningEnabled").toBool();
+	turnHighlightOnOff(syntaxHighlightningEnabled);
 }
 
 /*
@@ -442,7 +440,7 @@ void MainWindow::initIndenter()
 	m_indentHandler = new IndentHandler(m_currentIndenterID, this, m_centralSplitter);
 	m_centralSplitter->moveToFirst(m_indentHandler);
 
-	// If _settings for the indenter have changed, let the main window know aboud it.
+	// If settings for the indenter have changed, let the main window know aboud it.
 	connect(m_indentHandler, SIGNAL(indenterSettingsChanged()), this,
 	        SLOT(indentSettingsChangedSlot()));
 
@@ -451,7 +449,7 @@ void MainWindow::initIndenter()
 	m_previewToggled = true;
 
 ///-- 	// Handle if indenter parameter tool tips are enabled
-///-- 	_settings->registerObjectProperty(actionIndenterParameterTooltipsEnabled,
+///-- 	m_settings->registerObjectProperty(actionIndenterParameterTooltipsEnabled,
 ///-- 	        "checked", "indenterParameterTooltipsEnabled");
 }
 
@@ -481,8 +479,18 @@ TQString MainWindow::loadFile(const TQString &filePath)
 
 		TQFileInfo fileInfo(filePath);
 		m_currentSourceFileExtension = fileInfo.extension(false);
-///-- 		int indexOfHighlighter = _highlighter->setLexerForExtension(m_currentSourceFileExtension);
-///-- 		m_highlighterActionGroup->actions().at(indexOfHighlighter)->setChecked(true);
+		int indexOfHighlighter = m_highlighter->setLexer(m_currentSourceFileExtension);
+		// Mark the selected highlighter in the corresponding menu
+		int idx = 0;
+		for (TQAction *action : m_highlightingActions)
+		{
+			if (idx == indexOfHighlighter)
+			{
+				action->setOn(true);
+				break; 
+			}
+			++idx;
+		}
 	}
 	return fileContent;
 }
@@ -670,16 +678,16 @@ void MainWindow::callIndenter()
  */
 void MainWindow::turnHighlightOnOff(bool turnOn)
 {
-///-- 	if (turnOn)
-///-- 	{
-///-- 		_highlighter->turnHighlightOn();
-///-- 	}
-///-- 	else
-///-- 	{
-///-- 		_highlighter->turnHighlightOff();
-///-- 	}
-///-- 	m_previewToggled = true;
-///-- 	updateSourceView();
+	if (turnOn)
+	{
+		m_highlighter->turnHighlightOn();
+	}
+	else
+	{
+		m_highlighter->turnHighlightOff();
+	}
+	m_previewToggled = true;
+	updateSourceView();
 }
 
 /*
@@ -1059,9 +1067,9 @@ void MainWindow::saveSettings()
 	m_settings->setValueByName("LastOpenedFiles", m_recentlyOpenedList.join("|"));
 
 ///-- 	m_settings->setValueByName("MainWindowState", saveState());
-///-- 
-///-- 	// Also save the syntax highlight style for all lexers.
-///-- 	_highlighter->writeCurrentSettings("");
+
+	// Also save the syntax highlight style for all lexers.
+	m_highlighter->writeCurrentSettings();
 }
 
 /*
@@ -1142,7 +1150,7 @@ void MainWindow::createEncodingMenu()
 	m_saveEncodedActionGroup = new TQActionGroup(this);
 
 	// Loop for each available encoding
-	for(const TQString &encodingName : encodingsList)
+	for (const TQString &encodingName : encodingsList)
 	{
 		// Create actions for the "reopen" menu
 		TQAction *encodingAction = new TQAction(m_encodingActionGroup);
@@ -1237,23 +1245,21 @@ void MainWindow::encodingChanged(TQAction *encodingAction)
 */
 void MainWindow::createHighlighterMenu()
 {
-///---	m_highlighterActionGroup = new TQActionGroup(this);
-///---
-///---	// Loop for each known highlighter
-///---	for(const TQString &highlighterName: m_highlighter->getAvailableHighlighters())
-///---	{
-///---		TQAction *highlighterAction = new TQAction(m_highlighterActionGroup);
-///---		highlighterAction->setText(highlighterName);
-///---		highlighterAction->setStatusTip(tr("Set the syntax highlighting to ") + highlighterName);
-///---		highlighterAction->setToggleAction(true);
-///---	}
-///---
-///---	m_highlighterActionGroup ->addTo(popupMenuHighlighter);
-///---	connect(m_highlighterActionGroup , SIGNAL(selected(TQAction*)),
-///---	        m_highlighter, SLOT(setHighlighterByAction(TQAction*)));
-///---
-///---	_mainWindowForm->menuSettings->insertMenu(actionIndenterParameterTooltipsEnabled,
-///---	        _mainWindowForm->popupMenuHighlighter);
+	m_highlighterActionGroup = new TQActionGroup(this);
+
+	// Loop for each known highlighter
+	for (const TQString &highlighterName : m_highlighter->getAvailableHighlighters())
+	{
+		TQAction *highlighterAction = new TQAction(m_highlighterActionGroup);
+		highlighterAction->setText(highlighterName);
+		highlighterAction->setStatusTip(tr("Set the syntax highlighting to ") + highlighterName);
+		highlighterAction->setToggleAction(true);
+		m_highlightingActions.append(highlighterAction);
+	}
+
+	m_highlighterActionGroup->addTo(popupMenuHighlighter);
+	connect(m_highlighterActionGroup , SIGNAL(selected(TQAction*)),
+	        m_highlighter, SLOT(setHighlighterByAction(TQAction*)));
 }
 
 /*
diff --git a/src/MainWindow.h b/src/MainWindow.h
index 2236c5b..e752f8d 100644
--- a/src/MainWindow.h
+++ b/src/MainWindow.h
@@ -27,7 +27,7 @@
 
 class AboutDialog;
 /// class AboutDialogGraphicsView;
-/// class UiGuiHighlighter;
+class UiGuiHighlighter;
 class IndentHandler;
 class UiGuiSettings;
 class UiGuiSettingsDialog;
@@ -82,6 +82,7 @@ class MainWindow : public MainWindowBase
 	private:
 		TQString loadFile(const TQString &filePath);
 		void     updateWindowTitle();
+		void     updateSyntaxHighlighting();
 		void     loadLastOpenedFile();
 		void     saveSettings();
 		bool     maybeSave();
@@ -98,17 +99,17 @@ class MainWindow : public MainWindowBase
 ///-- 		void     dragEnterEvent(TQDragEnterEvent *event);
 ///-- 		void     dropEvent(TQDropEvent *event);
 
-	  TQSplitter     *m_centralSplitter;
-		TQextScintilla *m_qSciSourceCodeEditor;
-		UiGuiSettings  *m_settings;
-
-		TQString        m_currentEncoding;
-		TQString        m_sourceFileContent;
-		TQString        m_sourceFormattedContent;
-		TQString        m_sourceViewContent;
-///-- 		UiGuiHighlighter        *m_highlighter;
+	  TQSplitter       *m_centralSplitter;
+		TQextScintilla   *m_qSciSourceCodeEditor;
+		UiGuiSettings    *m_settings;
+                     
+		TQString          m_currentEncoding;
+		TQString          m_sourceFileContent;
+		TQString          m_sourceFormattedContent;
+		TQString          m_sourceViewContent;
+		UiGuiHighlighter *m_highlighter;
 ///-- 		TQScrollBar             *m_textEditVScrollBar;
-		AboutDialog    *m_aboutDialog;
+		AboutDialog      *m_aboutDialog;
 ///-- 		AboutDialogGraphicsView *_aboutDialogGraphicsView;
 		UiGuiSettingsDialog *m_settingsDialog;
 		int m_actionClearRecentlyOpenedListId;
@@ -125,6 +126,7 @@ class MainWindow : public MainWindowBase
 		TQActionGroup  *m_highlighterActionGroup;
 		TQValueList<TQAction*> m_openEncodingActions;
 		TQValueList<TQAction*> m_saveEncodingActions;
+		TQValueList<TQAction*> m_highlightingActions;
 		TQTranslator   *m_uiGuiTranslator;
 
 		bool            m_sourceCodeChanged;
diff --git a/src/UiGuiHighlighter.cpp b/src/UiGuiHighlighter.cpp
new file mode 100644
index 0000000..f23100b
--- /dev/null
+++ b/src/UiGuiHighlighter.cpp
@@ -0,0 +1,458 @@
+/***************************************************************************
+ *   Copyright (C) 2006-2012 by Thomas Schweitzer                          *
+ *   thomas-schweitzer(at)arcor.de                                         *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License version 2.0 as   *
+ *   published by the Free Software Foundation.                            *
+ *                                                                         *
+ *   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 in the file LICENSE.GPL; if not, write to the *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include "UiGuiHighlighter.h"
+
+#include "SettingsPaths.h"
+
+#include <tqaction.h>
+#include <tqsettings.h>
+
+#include <tqextscintilla.h>
+#include <tqextscintillalexer.h>
+#include <tqextscintillalexerbash.h>
+#include <tqextscintillalexerbatch.h>
+#include <tqextscintillalexercpp.h>
+#include <tqextscintillalexercsharp.h>
+#include <tqextscintillalexercss.h>
+#include <tqextscintillalexerdiff.h>
+#include <tqextscintillalexerhtml.h>
+#include <tqextscintillalexeridl.h>
+#include <tqextscintillalexerjava.h>
+#include <tqextscintillalexerjavascript.h>
+#include <tqextscintillalexerlua.h>
+#include <tqextscintillalexermakefile.h>
+#include <tqextscintillalexerperl.h>
+#include <tqextscintillalexerpov.h>
+#include <tqextscintillalexerproperties.h>
+#include <tqextscintillalexerpython.h>
+#include <tqextscintillalexerruby.h>
+#include <tqextscintillalexersql.h>
+#include <tqextscintillalexertex.h>
+
+/*
+    \class UiGuiHighlighter
+    \ingroup grp_EditorComponent
+    \brief UiGuiHighlighter used for selecting the syntax highlighter/lexer for the TQextScintilla component.
+*/
+
+/*
+    \brief The constructor initializes some regular expressions and keywords to identify cpp tokens
+ */
+UiGuiHighlighter::UiGuiHighlighter(TQextScintilla *parent) :
+		TQObject((TQObject*)parent)
+{
+	m_qsciEditorParent = parent;
+
+	// Create the highlighter m_settings object from the uiguisyntaxhighlightconfigrc file.
+	m_settings = new TQSettings(TQSettings::Ini);
+	// The next lines make user the settings are always stored in
+	// $HOME/.universalindentgui/uiguisyntaxhighlightconfigrc
+	m_settings->insertSearchPath(TQSettings::Unix, SettingsPaths::getSettingsPath());
+  m_settings->setPath("UniversalIndentGUI", "UniversalIndentGUI", TQSettings::User);
+
+	m_highlightingIsOn = true;
+
+	m_fileExtensions["Bash"]       = TQStringList() << "sh";
+	m_fileExtensions["Batch"]      = TQStringList() << "bat";
+	m_fileExtensions["C++"]        = TQStringList() << "c" << "h" << "cpp" << "hpp" << "cxx"<< "hxx";
+	m_fileExtensions["C#"]         = TQStringList() << "cs";
+	m_fileExtensions["CSS"]        = TQStringList() << "css";
+	m_fileExtensions["Diff"]       = TQStringList() << "diff";
+	m_fileExtensions["HTML"]       = TQStringList() << "html" << "htm";
+	m_fileExtensions["IDL"]        = TQStringList() << "idl";
+	m_fileExtensions["Java"]       = TQStringList() << "java";
+	m_fileExtensions["JavaScript"] = TQStringList() << "js";
+	m_fileExtensions["LUA"]        = TQStringList() << "lua";
+	m_fileExtensions["Makefile"]   = TQStringList() << "makefile";
+	m_fileExtensions["Perl"]       = TQStringList() << "perl" << "pl" << "pm";
+	m_fileExtensions["PHP"]        = TQStringList() << "php";
+	m_fileExtensions["POV"]        = TQStringList() << "pov";
+	m_fileExtensions["Ini"]        = TQStringList() << "ini";
+	m_fileExtensions["Python"]     = TQStringList() << "py";
+	m_fileExtensions["Ruby"]       = TQStringList() << "rub" << "rb";
+	m_fileExtensions["SQL"]        = TQStringList() << "sql";
+	m_fileExtensions["TeX"]        = TQStringList() << "tex";
+	m_fileExtensions["XML"]        = TQStringList() << "xml";
+
+	m_lexer = NULL;
+
+	// Set default highlighter to C++ highlighter.
+	setLexer("cpp");
+}
+
+UiGuiHighlighter::~UiGuiHighlighter()
+{
+	delete m_settings;
+}
+
+/*
+    \brief Returns the available highlighters as TQStringList.
+ */
+TQStringList UiGuiHighlighter::getAvailableHighlighters()
+{
+	return m_fileExtensions.keys();
+}
+
+/*
+    \brief This slot handles signals coming from selecting another syntax highlighter.
+ */
+void UiGuiHighlighter::setHighlighterByAction(TQAction *highlighterAction)
+{
+	TQString highlighterName = highlighterAction->text();
+	setLexer(m_fileExtensions[highlighterName].first());
+	// TODO: This is really no nice way. How do it better?
+	// Need to do this "text update" to update the syntax highlighting. Otherwise highlighting is
+	// wrong.
+	// TODO not available in TQScintilla 1.71
+  //---	int scrollPos = m_qsciEditorParent->verticalScrollBar()->value();
+	m_qsciEditorParent->setText(m_qsciEditorParent->text());
+  //---	m_qsciEditorParent->verticalScrollBar()->setValue(scrollPos);
+}
+
+/*
+    \brief Turns the syntax parser on.
+*/
+void UiGuiHighlighter::turnHighlightOn()
+{
+ 	m_highlightingIsOn = true;
+	m_qsciEditorParent->setLexer(m_lexer);
+	readCurrentSettings();
+}
+
+/*
+    \brief Turns the syntax parser off.
+*/
+void UiGuiHighlighter::turnHighlightOff()
+{
+ 	m_highlightingIsOn = false;
+	m_qsciEditorParent->setLexer();
+	m_qsciEditorParent->setFont(TQFont("Monospace", 10, TQFont::Normal));
+	m_qsciEditorParent->setMarginsFont(TQFont("Monospace", 10, TQFont::Normal));
+}
+
+/*
+    \brief Read the settings for the current lexer from the settings file.
+ */
+bool UiGuiHighlighter::readCurrentSettings()
+{
+	// settings are read from the uiguisyntaxhighlightconfigrc file, group <lexer name>
+	m_settings->resetGroup();
+	m_settings->beginGroup(TQString("uiguisyntaxhighlightconfig/") + m_lexer->language());
+
+	bool     ok, flag, rc = true;
+	int      num;
+
+	// Reset lists containing fonts and colors for each style
+	m_fontForStyles.clear();
+	m_colorForStyles.clear();
+
+	// Read the styles.
+	for (int i = 0; i < 128; ++i)
+	{
+		// Ignore invalid styles.
+		if (m_lexer->description(i).isEmpty())
+		{
+			continue;
+		}
+
+		TQString key = TQString();
+		key.sprintf("style%02d/", i);
+		key.replace("+", "p");
+
+		// Read the foreground color.
+		num = m_settings->readNumEntry(key + "color", 0, &ok);
+		if (ok)
+		{
+			setColor(TQColor((num >> 16) & 0xff, (num >> 8) & 0xff, num & 0xff), i);
+		}
+		else
+		{
+			rc = false;
+		}
+
+		// Read the end-of-line fill.
+		flag = m_settings->readBoolEntry(key + "eolfill", false, &ok);
+		if (ok)
+		{
+			m_lexer->setEolFill(flag, i);
+		}
+		else
+		{
+			rc = false;
+		}
+
+		// Read the font
+		TQStringList fdesc;
+		fdesc = m_settings->readListEntry(key + "font", &ok);
+		if (ok && fdesc.count() == 5)
+		{
+			TQFont f;
+			f.setFamily(fdesc[0]);
+			f.setPointSize(fdesc[1].toInt());
+			f.setBold(fdesc[2].toInt());
+			f.setItalic(fdesc[3].toInt());
+			f.setUnderline(fdesc[4].toInt());
+			setFont(f, i);
+		}
+		else
+		{
+			rc = false;
+		}
+
+		// Read the background color.
+		num = m_settings->readNumEntry(key + "paper", 0, &ok);
+		if (ok)
+		{
+			m_lexer->setPaper(TQColor((num >> 16) & 0xff, (num >> 8) & 0xff, num & 0xff), i);
+		}
+		else
+		{
+			rc = false;
+		}
+	}
+
+	// Read the properties.
+	m_lexer->refreshProperties();
+
+	return rc;
+}
+
+/*
+    \brief Write the settings for the current lexer to the settings file.
+ */
+void UiGuiHighlighter::writeCurrentSettings()
+{
+	// settings are stored in the uiguisyntaxhighlightconfigrc file, group <lexer name>
+	m_settings->resetGroup();
+	m_settings->beginGroup(TQString("uiguisyntaxhighlightconfig/") + m_lexer->language());
+
+	// Write the styles.
+	for (int i = 0; i < 128; ++i)
+	{
+		// Ignore invalid styles.
+		if (m_lexer->description(i).isEmpty())
+		{
+			continue;
+		}
+
+		int     num;
+		TQColor c;
+
+		TQString key = TQString();
+		key.sprintf("style%02d/", i);
+		key.replace("+", "p");
+
+		// Write style name
+		m_settings->writeEntry(key + "", m_lexer->description(i));
+
+		// Write the foreground color.
+		if (m_colorForStyles.contains(i))
+		{
+			c = m_colorForStyles[i];
+		}
+		else
+		{
+			c = m_lexer->color(i);
+		}
+		num = (c.red() << 16) | (c.green() << 8) | c.blue();
+
+		m_settings->writeEntry(key + "color", num);
+
+		// Write the end-of-line fill.
+		m_settings->writeEntry(key + "eolfill", m_lexer->eolFill(i));
+
+		// Write the font
+		TQStringList fdesc;
+		TQString     fmt("%1");
+		TQFont       f;
+		if (m_fontForStyles.contains(i))
+		{
+			f = m_fontForStyles[i];
+		}
+		else
+		{
+			f = m_lexer->font(i);
+		}
+
+		fdesc += f.family();
+		fdesc += fmt.arg(f.pointSize());
+		// The casts are for Borland.
+		fdesc += fmt.arg((int)f.bold());
+		fdesc += fmt.arg((int)f.italic());
+		fdesc += fmt.arg((int)f.underline());
+
+		m_settings->writeEntry(key + "font", fdesc);
+
+		// Write the background color.
+		c   = m_lexer->paper(i);
+		num = (c.red() << 16) | (c.green() << 8) | c.blue();
+
+		m_settings->writeEntry(key + "paper", num);
+	}
+}
+
+/*
+    \brief Sets the \a color for the given \a style.
+ */
+void UiGuiHighlighter::setColor(const TQColor &color, int style)
+{
+	m_colorForStyles[style] = color;
+	m_lexer->setColor(color, style);
+}
+
+/*
+    \brief Sets the \a font for the given \a style.
+ */
+void UiGuiHighlighter::setFont(const TQFont &font, int style)
+{
+	m_fontForStyles[style] = font;
+	m_lexer->setFont(font, style);
+}
+
+/*
+    \brief Sets the proper highlighter/lexer for the given file \a extension. Returns the index of the used lexer in the list.
+ */
+int UiGuiHighlighter::setLexer(TQString extension)
+{
+	int indexOfHighlighter = 0;
+	extension = extension.lower();
+
+	if (m_lexer)
+	{
+		writeCurrentSettings();
+		delete m_lexer;
+		m_lexer = nullptr;
+	}
+
+	if (extension == "cpp" || extension == "hpp" || extension == "c" || extension == "h" ||
+	    extension == "cxx" || extension == "hxx")
+	{
+		m_lexer = new TQextScintillaLexerCPP();
+	}
+	else if (extension == "sh")
+	{
+		m_lexer = new TQextScintillaLexerBash();
+	}
+	else if (extension == "bat")
+	{
+		m_lexer = new TQextScintillaLexerBatch();
+	}
+	else if (extension == "cs")
+	{
+		m_lexer = new TQextScintillaLexerCSharp();
+	}
+	else if (extension == "css")
+	{
+		m_lexer = new TQextScintillaLexerCSS();
+	}
+	else if (extension == "diff")
+	{
+		m_lexer = new TQextScintillaLexerDiff();
+	}
+	else if (extension == "html" || extension == "htm")
+	{
+		m_lexer = new TQextScintillaLexerHTML();
+	}
+	else if (extension == "idl")
+	{
+		m_lexer = new TQextScintillaLexerIDL();
+	}
+	else if (extension == "java")
+	{
+		m_lexer = new TQextScintillaLexerJava();
+	}
+	else if (extension == "js")
+	{
+		m_lexer = new TQextScintillaLexerJavaScript();
+	}
+	else if (extension == "lua")
+	{
+		m_lexer = new TQextScintillaLexerLua();
+	}
+	else if (extension == "makefile")
+	{
+		m_lexer = new TQextScintillaLexerMakefile();
+	}
+	else if (extension == "perl" || extension == "pl" || extension == "pm")
+	{
+		m_lexer = new TQextScintillaLexerPerl();
+	}
+	else if (extension == "php")
+	{
+		m_lexer = new TQextScintillaLexerHTML();
+	}
+	else if (extension == "pov")
+	{
+		m_lexer = new TQextScintillaLexerPOV();
+	}
+	else if (extension == "ini")
+	{
+		m_lexer = new TQextScintillaLexerProperties();
+	}
+	else if (extension == "py")
+	{
+		m_lexer = new TQextScintillaLexerPython();
+	}
+	else if (extension == "rub" || extension == "rb")
+	{
+		m_lexer = new TQextScintillaLexerRuby();
+	}
+	else if (extension == "sql")
+	{
+		m_lexer = new TQextScintillaLexerSQL();
+	}
+	else if (extension == "tex")
+	{
+		m_lexer = new TQextScintillaLexerTeX();
+	}
+	else if (extension == "xml")
+	{
+		m_lexer = new TQextScintillaLexerHTML();
+	}
+	else
+	{
+		m_lexer    = new TQextScintillaLexerCPP();
+		extension = "cpp";
+	}
+
+	// Find the index of the selected m_lexer.
+	indexOfHighlighter = 0;
+	for (const TQString &hlExtList : m_fileExtensions.keys())
+	{
+		if (m_fileExtensions[hlExtList].contains(extension))
+		{
+			break;
+		}
+		indexOfHighlighter++;
+	}
+
+	// Set the m_lexer for the TQScintilla widget.
+	if (m_highlightingIsOn)
+	{
+		m_qsciEditorParent->setLexer(m_lexer);
+	}
+
+	// Read the m_settings for the m_lexer properties from file.
+	readCurrentSettings();
+
+	return indexOfHighlighter;
+}
+
+#include "UiGuiHighlighter.moc"
diff --git a/src/__TODO/UiGuiHighlighter.h b/src/UiGuiHighlighter.h
index d160f9b..c22e751 100644
--- a/src/__TODO/UiGuiHighlighter.h
+++ b/src/UiGuiHighlighter.h
@@ -20,16 +20,17 @@
 #ifndef UIGUIHIGHLIGHTER_H
 #define UIGUIHIGHLIGHTER_H
 
-#include <tntqobject.h>
-#include <tntqmap.h>
-#include <tntqfont.h>
-#include <tntqcolor.h>
+#include <tqcolor.h>
+#include <tqfont.h>
+#include <tqobject.h>
+#include <tqmap.h>
+#include <tqstringlist.h>
 
 class TQAction;
 class TQSettings;
 
 class TQextScintilla;
-class QsciLexer;
+class TQextScintillaLexer;
 
 
 class UiGuiHighlighter : public TQObject
@@ -38,12 +39,13 @@ class UiGuiHighlighter : public TQObject
 
 	public:
 		UiGuiHighlighter(TQextScintilla *parent);
+		~UiGuiHighlighter();
 
 		void turnHighlightOff();
 		void turnHighlightOn();
 
-		bool         readCurrentSettings(const char *prefix);
-		void         writeCurrentSettings(const char *prefix);
+		bool         readCurrentSettings();
+		void         writeCurrentSettings();
 		TQStringList getAvailableHighlighters();
 
 	public slots:
@@ -56,20 +58,18 @@ class UiGuiHighlighter : public TQObject
 		void setFont(const TQFont &font, int style = -1);
 
 		// Sets the lexer that is responsible for the given \a extension.
-		int setLexerForExtension(TQString extension);
-
-		void setLexerByName(TQString lexerName);
+		int setLexer(TQString extension);
 
 		void setHighlighterByAction(TQAction *highlighterAction);
 
 	private:
-		bool                          _highlightingIsOn;
-		TQextScintilla                *_qsciEditorParent;
-		TQMap<int, TQFont>            _fontForStyles;
-		TQMap<int, TQColor>           _colorForStyles;
-		QsciLexer                    *_lexer;
-		TQSettings                   *_settings;
-		TQMap<TQString, TQStringList> _mapHighlighternameToExtension;
+		bool                          m_highlightingIsOn;
+		TQextScintilla               *m_qsciEditorParent;
+		TQMap<int, TQFont>            m_fontForStyles;
+		TQMap<int, TQColor>           m_colorForStyles;
+		TQextScintillaLexer          *m_lexer;
+		TQSettings                   *m_settings;
+		TQMap<TQString, TQStringList> m_fileExtensions;
 };
 
 #endif // UIGUIHIGHLIGHTER_H
diff --git a/src/UiGuiSettingsDialog.cpp b/src/UiGuiSettingsDialog.cpp
index 8eb5783..773802c 100644
--- a/src/UiGuiSettingsDialog.cpp
+++ b/src/UiGuiSettingsDialog.cpp
@@ -166,7 +166,7 @@ void UiGuiSettingsDialog::updateSettings()
 //--- 			"(Will be implemented soon)" +
 //--- 			groupBoxSyntaxHighlighterProperties->toolTip());
 //--- 
-//--- 		TQStringList languageShortList = _settings->getAvailableTranslations();
+//--- 		TQStringList languageShortList = m_settings->getAvailableTranslations();
 //--- 
 //--- 		// Now retranslate every entry in the language selection box.
 //--- 		for (int i = 0; i < languageShortList.size(); i++)
diff --git a/src/__TODO/UiGuiHighlighter.cpp b/src/__TODO/UiGuiHighlighter.cpp
deleted file mode 100644
index a5065c1..0000000
--- a/src/__TODO/UiGuiHighlighter.cpp
+++ /dev/null
@@ -1,595 +0,0 @@
-/***************************************************************************
- *   Copyright (C) 2006-2012 by Thomas Schweitzer                          *
- *   thomas-schweitzer(at)arcor.de                                         *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License version 2.0 as   *
- *   published by the Free Software Foundation.                            *
- *                                                                         *
- *   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 in the file LICENSE.GPL; if not, write to the *
- *   Free Software Foundation, Inc.,                                       *
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
- ***************************************************************************/
-
-#include "UiGuiHighlighter.h"
-
-#include "SettingsPaths.h"
-
-#include <tntqsettings.h>
-#include <tqmenu.h>
-#include <tntqscrollbar.h>
-#include <tqcoreapplication.h>
-
-#include <Qsci/qsciscintilla.h>
-#include <Qsci/qscilexer.h>
-#include <Qsci/qscilexerbash.h>
-#include <Qsci/qscilexerbatch.h>
-#include <Qsci/qscilexercmake.h>
-#include <Qsci/qscilexercpp.h>
-#include <Qsci/qscilexercsharp.h>
-#include <Qsci/qscilexercss.h>
-#include <Qsci/qscilexerd.h>
-#include <Qsci/qscilexerdiff.h>
-#if (TQSCINTILLA_VERSION >= 0x020300)
- #include <Qsci/qscilexerfortran.h>
- #include <Qsci/qscilexerfortran77.h>
-#endif
-#include <Qsci/qscilexerhtml.h>
-#include <Qsci/qscilexeridl.h>
-#include <Qsci/qscilexerjava.h>
-#include <Qsci/qscilexerjavascript.h>
-#include <Qsci/qscilexerlua.h>
-#include <Qsci/qscilexermakefile.h>
-#if (TQSCINTILLA_VERSION >= 0x020300)
- #include <Qsci/qscilexerpascal.h>
-#endif
-#include <Qsci/qscilexerperl.h>
-#if (TQSCINTILLA_VERSION >= 0x020300)
- #include <Qsci/qscilexerpostscript.h>
-#endif
-#include <Qsci/qscilexerpov.h>
-#include <Qsci/qscilexerproperties.h>
-#include <Qsci/qscilexerpython.h>
-#include <Qsci/qscilexerruby.h>
-#if (TQSCINTILLA_VERSION >= 0x020400)
- #include <Qsci/qscilexerspice.h>
-#endif
-#include <Qsci/qscilexersql.h>
-#if (TQSCINTILLA_VERSION >= 0x020300)
- #include <Qsci/qscilexertcl.h>
-#endif
-#include <Qsci/qscilexertex.h>
-#if (TQSCINTILLA_VERSION >= 0x020400)
- #include <Qsci/qscilexerverilog.h>
-#endif
-#include <Qsci/qscilexervhdl.h>
-#if (TQSCINTILLA_VERSION >= 0x020300)
- #include <Qsci/qscilexerxml.h>
- #include <Qsci/qscilexeryaml.h>
-#endif
-
-// \defgroup grp_EditorComponent All concerning editor widget.
-
-/*
-    \class UiGuiHighlighter
-    \ingroup grp_EditorComponent
-    \brief UiGuiHighlighter used for selecting the syntax highlighter/lexer for the TQextScintilla component.
-*/
-
-/*
-    \brief The constructor initializes some regular expressions and keywords to identify cpp tokens
- */
-UiGuiHighlighter::UiGuiHighlighter(TQextScintilla *parent) :
-		TQObject(parent)
-{
-	_qsciEditorParent = parent;
-
-	// Create the highlighter _settings object from the UiGuiSyntaxHighlightConfig.ini file.
-	_settings = new TQSettings(
-		SettingsPaths::getSettingsPath() + "/UiGuiSyntaxHighlightConfig.ini", TQSettings::IniFormat,
-		this);
-
-	_highlightingIsOn = true;
-
-	_mapHighlighternameToExtension["Bash"]  = TQStringList() << "sh";
-	_mapHighlighternameToExtension["Batch"] = TQStringList() << "bat";
-	_mapHighlighternameToExtension["CMake"] = TQStringList() << "cmake";
-	_mapHighlighternameToExtension["C++"]   = TQStringList() << "c" << "h" << "cpp" << "hpp" <<
-	        "cxx" << "hxx";
-	_mapHighlighternameToExtension["C#"]   = TQStringList() << "cs";
-	_mapHighlighternameToExtension["CSS"]  = TQStringList() << "css";
-	_mapHighlighternameToExtension["D"]    = TQStringList() << "d";
-	_mapHighlighternameToExtension["Diff"] = TQStringList() << "diff";
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	_mapHighlighternameToExtension["Fortran"]   = TQStringList() << "f" << "for" << "f90";
-	_mapHighlighternameToExtension["Fortran77"] = TQStringList() << "f77";
-#endif
-	_mapHighlighternameToExtension["HTML"]       = TQStringList() << "html" << "htm";
-	_mapHighlighternameToExtension["IDL"]        = TQStringList() << "idl";
-	_mapHighlighternameToExtension["Java"]       = TQStringList() << "java";
-	_mapHighlighternameToExtension["JavaScript"] = TQStringList() << "js";
-	_mapHighlighternameToExtension["LUA"]        = TQStringList() << "lua";
-	_mapHighlighternameToExtension["Makefile"]   = TQStringList() << "makefile";
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	_mapHighlighternameToExtension["Pascal"] = TQStringList() << "pas";
-#endif
-	_mapHighlighternameToExtension["Perl"] = TQStringList() << "perl" << "pl" << "pm";
-	_mapHighlighternameToExtension["PHP"]  = TQStringList() << "php";
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	_mapHighlighternameToExtension["PostScript"] = TQStringList() << "ps" << "eps" << "pdf" << "ai" <<
-	        "fh";
-#endif
-	_mapHighlighternameToExtension["POV"]    = TQStringList() << "pov";
-	_mapHighlighternameToExtension["Ini"]    = TQStringList() << "ini";
-	_mapHighlighternameToExtension["Python"] = TQStringList() << "py";
-	_mapHighlighternameToExtension["Ruby"]   = TQStringList() << "rub" << "rb";
-#if (TQSCINTILLA_VERSION >= 0x020400)
-	_mapHighlighternameToExtension["Spice"] = TQStringList() << "cir";
-#endif
-	_mapHighlighternameToExtension["SQL"] = TQStringList() << "sql";
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	_mapHighlighternameToExtension["TCL"] = TQStringList() << "tcl";
-#endif
-	_mapHighlighternameToExtension["TeX"] = TQStringList() << "tex";
-#if (TQSCINTILLA_VERSION >= 0x020400)
-	_mapHighlighternameToExtension["Verilog"] = TQStringList() << "v" << "vh";
-#endif
-	_mapHighlighternameToExtension["VHDL"] = TQStringList() << "vhdl";
-	_mapHighlighternameToExtension["XML"]  = TQStringList() << "xml";
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	_mapHighlighternameToExtension["YAML"] = TQStringList() << "yaml";
-#endif
-
-	_lexer = NULL;
-
-	// This code is only for testing.
-	/*
-	  foreach(TQStringList extensionList, _mapHighlighternameToExtension.values() ) {
-	      setLexerForExtension( extensionList.at(0) );
-	  }
-	  */
-
-	// Set default highlighter to C++ highlighter.
-	setLexerForExtension("cpp");
-}
-
-/*
-    \brief Returns the available highlighters as TQStringList.
- */
-TQStringList UiGuiHighlighter::getAvailableHighlighters()
-{
-	return _mapHighlighternameToExtension.keys();
-}
-
-/*
-    \brief This slot handles signals coming from selecting another syntax highlighter.
- */
-void UiGuiHighlighter::setHighlighterByAction(TQAction *highlighterAction)
-{
-	TQString highlighterName = highlighterAction->text();
-	setLexerForExtension(_mapHighlighternameToExtension[highlighterName].first());
-	//TODO: This is really no nice way. How do it better?
-	// Need to do this "text update" to update the syntax highlighting. Otherwise highlighting is
-	// wrong.
-	int scrollPos = _qsciEditorParent->verticalScrollBar()->value();
-	_qsciEditorParent->setText(_qsciEditorParent->text());
-	_qsciEditorParent->verticalScrollBar()->setValue(scrollPos);
-}
-
-/*
-    \brief Turns the syntax parser on.
-*/
-void UiGuiHighlighter::turnHighlightOn()
-{
-	_highlightingIsOn = true;
-	_qsciEditorParent->setLexer(_lexer);
-	readCurrentSettings("");
-}
-
-/*
-    \brief Turns the syntax parser off.
-*/
-void UiGuiHighlighter::turnHighlightOff()
-{
-	_highlightingIsOn = false;
-	_qsciEditorParent->setLexer();
-	_qsciEditorParent->setFont(TQFont("Monospace", 10, TQFont::Normal));
-	_qsciEditorParent->setMarginsFont(TQFont("Monospace", 10, TQFont::Normal));
-}
-
-/*
-    \brief Read the settings for the current lexer from the settings file.
- */
-
-//TODO: Refactor this function so that the coding style and variable names suit better.
-bool UiGuiHighlighter::readCurrentSettings(const char *prefix)
-{
-	bool     ok, flag, rc = true;
-	int      num;
-	TQString key;
-
-	// Reset lists containing fonts and colors for each style
-	_fontForStyles.clear();
-	_colorForStyles.clear();
-
-	// Read the styles.
-	for (int i = 0; i < 128; ++i)
-	{
-		// Ignore invalid styles.
-		if (_lexer->description(i).isEmpty())
-		{
-			continue;
-		}
-
-		key.sprintf("%s/%s/style%d/", prefix, _lexer->language(), i);
-		key.replace("+", "p");
-
-		// Read the foreground color.
-		ok  = _settings->contains(key + "color");
-		num = _settings->value(key + "color", 0).toInt();
-
-		if (ok)
-		{
-			setColor(TQColor((num >> 16) & 0xff, (num >> 8) & 0xff, num & 0xff), i);
-		}
-		else
-		{
-			rc = false;
-		}
-
-		// Read the end-of-line fill.
-		ok   = _settings->contains(key + "eolfill");
-		flag = _settings->value(key + "eolfill", false).toBool();
-
-		if (ok)
-		{
-			_lexer->setEolFill(flag, i);
-		}
-		else
-		{
-			rc = false;
-		}
-
-		// Read the font
-		TQStringList fdesc;
-
-		ok    = _settings->contains(key + "font");
-		fdesc = _settings->value(key + "font").toStringList();
-
-		if (ok && fdesc.count() == 5)
-		{
-			TQFont f;
-
-			if (fdesc[0].contains("courier", TQt::CaseInsensitive))
-			{
-				f.setFamily("Monospace");
-			}
-			else
-			{
-				f.setFamily(fdesc[0]);
-			}
-			f.setPointSize(fdesc[1].toInt());
-			f.setBold(fdesc[2].toInt());
-			f.setItalic(fdesc[3].toInt());
-			f.setUnderline(fdesc[4].toInt());
-
-			setFont(f, i);
-		}
-		else
-		{
-			rc = false;
-		}
-
-		// Read the background color.
-		ok  = _settings->contains(key + "paper");
-		num = _settings->value(key + "paper", 0).toInt();
-
-		if (ok)
-		{
-			_lexer->setPaper(TQColor((num >> 16) & 0xff, (num >> 8) & 0xff, num & 0xff), i);
-		}
-		else
-		{
-			rc = false;
-		}
-	}
-
-	// Read the properties.
-	key.sprintf("%s/%s/properties/", prefix, _lexer->language());
-
-	_lexer->refreshProperties();
-
-	return rc;
-}
-
-/*
-    \brief Write the settings for the current lexer to the settings file.
- */
-void UiGuiHighlighter::writeCurrentSettings(const char *prefix)
-{
-	TQString key;
-
-	// Write the styles.
-	for (int i = 0; i < 128; ++i)
-	{
-		// Ignore invalid styles.
-		if (_lexer->description(i).isEmpty())
-		{
-			continue;
-		}
-
-		int     num;
-		TQColor c;
-
-		key.sprintf("%s/%s/style%d/", prefix, _lexer->language(), i);
-		key.replace("+", "p");
-
-		// Write style name
-		_settings->setValue(key + "", _lexer->description(i));
-
-		// Write the foreground color.
-		if (_colorForStyles.contains(i))
-		{
-			c = _colorForStyles[i];
-		}
-		else
-		{
-			c = _lexer->color(i);
-		}
-		num = (c.red() << 16) | (c.green() << 8) | c.blue();
-
-		_settings->setValue(key + "color", num);
-
-		// Write the end-of-line fill.
-		_settings->setValue(key + "eolfill", _lexer->eolFill(i));
-
-		// Write the font
-		TQStringList fdesc;
-		TQString     fmt("%1");
-		TQFont       f;
-
-		if (_fontForStyles.contains(i))
-		{
-			f = _fontForStyles[i];
-		}
-		else
-		{
-			f = _lexer->font(i);
-		}
-
-		fdesc += f.family();
-		fdesc += fmt.arg(f.pointSize());
-
-		// The casts are for Borland.
-		fdesc += fmt.arg((int)f.bold());
-		fdesc += fmt.arg((int)f.italic());
-		fdesc += fmt.arg((int)f.underline());
-
-		_settings->setValue(key + "font", fdesc);
-
-		// Write the background color.
-		c   = _lexer->paper(i);
-		num = (c.red() << 16) | (c.green() << 8) | c.blue();
-
-		_settings->setValue(key + "paper", num);
-	}
-}
-
-/*
-    \brief Sets the \a color for the given \a style.
- */
-void UiGuiHighlighter::setColor(const TQColor &color, int style)
-{
-	_colorForStyles[style] = color;
-	_lexer->setColor(color, style);
-}
-
-/*
-    \brief Sets the \a font for the given \a style.
- */
-void UiGuiHighlighter::setFont(const TQFont &font, int style)
-{
-	_fontForStyles[style] = font;
-	_lexer->setFont(font, style);
-}
-
-/*
-    \brief Sets the to be used lexer by giving his name.
- */
-void UiGuiHighlighter::setLexerByName(TQString lexerName)
-{
-	setLexerForExtension(_mapHighlighternameToExtension[lexerName].first());
-}
-
-/*
-    \brief Sets the proper highlighter / lexer for the given file \a extension. Returns the index of the used lexer in the list.
- */
-int UiGuiHighlighter::setLexerForExtension(TQString extension)
-{
-	int indexOfHighlighter = 0;
-	extension = extension.toLower();
-
-	if (_lexer != NULL)
-	{
-		writeCurrentSettings("");
-		delete _lexer;
-	}
-
-	if (extension == "cpp" || extension == "hpp" || extension == "c" || extension == "h" ||
-	        extension == "cxx" || extension == "hxx")
-	{
-		_lexer = new QsciLexerCPP();
-	}
-	else if (extension == "sh")
-	{
-		_lexer = new QsciLexerBash();
-	}
-	else if (extension == "bat")
-	{
-		_lexer = new QsciLexerBatch();
-	}
-	else if (extension == "cmake")
-	{
-		_lexer = new QsciLexerCMake();
-	}
-	else if (extension == "cs")
-	{
-		_lexer = new QsciLexerCSharp();
-	}
-	else if (extension == "css")
-	{
-		_lexer = new QsciLexerCSS();
-	}
-	else if (extension == "d")
-	{
-		_lexer = new QsciLexerD();
-	}
-	else if (extension == "diff")
-	{
-		_lexer = new QsciLexerDiff();
-	}
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	else if (extension == "f" || extension == "for" || extension == "f90")
-	{
-		_lexer = new QsciLexerFortran();
-	}
-	else if (extension == "f77")
-	{
-		_lexer = new QsciLexerFortran77();
-	}
-#endif
-	else if (extension == "html" || extension == "htm")
-	{
-		_lexer = new QsciLexerHTML();
-	}
-	else if (extension == "idl")
-	{
-		_lexer = new QsciLexerIDL();
-	}
-	else if (extension == "java")
-	{
-		_lexer = new QsciLexerJava();
-	}
-	else if (extension == "js")
-	{
-		_lexer = new QsciLexerJavaScript();
-	}
-	else if (extension == "lua")
-	{
-		_lexer = new QsciLexerLua();
-	}
-	else if (extension == "makefile")
-	{
-		_lexer = new QsciLexerMakefile();
-	}
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	else if (extension == "pas")
-	{
-		_lexer = new QsciLexerPascal();
-	}
-#endif
-	else if (extension == "perl" || extension == "pl" || extension == "pm")
-	{
-		_lexer = new QsciLexerPerl();
-	}
-	else if (extension == "php")
-	{
-		_lexer = new QsciLexerHTML();
-	}
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	else if (extension == "ps" || extension == "eps" || extension == "pdf" || extension == "ai" ||
-	        extension == "fh")
-	{
-		_lexer = new QsciLexerPostScript();
-	}
-#endif
-	else if (extension == "pov")
-	{
-		_lexer = new QsciLexerPOV();
-	}
-	else if (extension == "ini")
-	{
-		_lexer = new QsciLexerProperties();
-	}
-	else if (extension == "py")
-	{
-		_lexer = new QsciLexerPython();
-	}
-	else if (extension == "rub" || extension == "rb")
-	{
-		_lexer = new QsciLexerRuby();
-	}
-#if (TQSCINTILLA_VERSION >= 0x020400)
-	else if (extension == "spice?")
-	{
-		_lexer = new QsciLexerSpice();
-	}
-#endif
-	else if (extension == "sql")
-	{
-		_lexer = new QsciLexerSQL();
-	}
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	else if (extension == "tcl")
-	{
-		_lexer = new QsciLexerTCL();
-	}
-#endif
-	else if (extension == "tex")
-	{
-		_lexer = new QsciLexerTeX();
-	}
-#if (TQSCINTILLA_VERSION >= 0x020400)
-	else if (extension == "vlog?")
-	{
-		_lexer = new QsciLexerVerilog();
-	}
-#endif
-	else if (extension == "vhdl")
-	{
-		_lexer = new QsciLexerVHDL();
-	}
-	else if (extension == "xml")
-	{
-#if (TQSCINTILLA_VERSION >= 0x020300)
-		_lexer = new QsciLexerXML();
-#else
-		_lexer = new QsciLexerHTML();
-#endif
-	}
-#if (TQSCINTILLA_VERSION >= 0x020300)
-	else if (extension == "yaml")
-	{
-		_lexer = new QsciLexerYAML();
-	}
-#endif
-	else
-	{
-		_lexer    = new QsciLexerCPP();
-		extension = "cpp";
-	}
-
-	// Find the index of the selected _lexer.
-	indexOfHighlighter = 0;
-	while (!_mapHighlighternameToExtension.values().at(indexOfHighlighter).contains(extension))
-	{
-		indexOfHighlighter++;
-	}
-
-	// Set the _lexer for the TQScintilla widget.
-	if (_highlightingIsOn)
-	{
-		_qsciEditorParent->setLexer(_lexer);
-	}
-
-	// Read the _settings for the _lexer properties from file.
-	readCurrentSettings("");
-
-	return indexOfHighlighter;
-}