#include "texteditor.h"

#include <iostream>

#include <cstdlib>

#include <typeinfo>

#include "noteobj.h"

#include "settings.h"

#include "version.h"

extern int statusbarTime;

extern Settings settings;

extern QAction *actionViewToggleNoteEditor;

extern QString iconPath;

extern QString vymName;

using namespace std;

///////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////

TextEditor::TextEditor()

{

    printer = new QPrinter( QPrinter::HighResolution );

	printer->setPrinterName (settings.value("/mainwindow/printerName",printer->printerName()).toString());

    e = new QTextEdit( this);

    e->setFocus();

	e->setTextFormat(Qt::RichText);		// default

	e->setTabStopWidth (20);		// unit is pixel

	e->setColor (Qt::black);

	e->setAutoFillBackground (true);

	connect (e, SIGNAL( textChanged() ), this, SLOT( editorChanged() ) );

    setCentralWidget( e );

    statusBar()->message( tr("Ready","Statusbar message"), statusbarTime);

	setCaption(vymName +" - " +tr ("Note Editor","Window caption"));

	connect(e, SIGNAL(currentCharFormatChanged(const QTextCharFormat &)),

            this, SLOT(formatChanged(const QTextCharFormat &)));

	// Toolbars

	setupFileActions();

	setupEditActions();

	setupFormatActions();

	setupSettingsActions();

	// Various states

	blockChangedSignal=false;

	setInactive();

	// Load Settings

	resize (settings.value ( "/noteeditor/geometry/size", QSize(450,600)).toSize());

	move   (settings.value ( "/noteeditor/geometry/pos", QPoint (250,50)).toPoint());

	if (settings.value ( "/noteeditor/showWithMain",true).toBool())

		setShowWithMain(true);

	else	

		setShowWithMain(false);

	varFont.fromString( settings.value

		("/noteeditor/fonts/varFont",

		"Nimbus Sans l,14,-1,5,48,0,0,0,0,0").toString() 

	);

	fixedFont.fromString (settings.value(

		"/noteeditor/fonts/fixedFont",

		"Courier,14,-1,5,48,0,0,0,1,0").toString() 

	);

	QString s=settings.value ("/noteeditor/fonts/fonthintDefault","variable").toString();

	if (s == "fixed")

	{	

		actionSettingsFonthintDefault->setOn (true);

		e->setCurrentFont (fixedFont);

	} else	

	{

		actionSettingsFonthintDefault->setOn (false);

		e->setCurrentFont (varFont);

	}	

	filenameHint="";

	// Restore position of toolbars

	restoreState (settings.value("/noteeditor/state",0).toByteArray());

	// Save settings in vymrc

	settings.setValue("/mainwindow/printerName",printer->printerName());

}

TextEditor::~TextEditor()

{

    if (printer) delete printer;

	// Save Settings

	settings.setValue( "/noteeditor/geometry/size", size() );

	settings.setValue( "/noteeditor/geometry/pos", pos() );

	settings.setValue ("/noteeditor/state",saveState(0));

	settings.setValue( "/noteeditor/showWithMain",showWithMain());

	QString s;

	if (actionSettingsFonthintDefault->isOn() )

		s="fixed";

	else	

		s="variable";

	settings.setValue( "/noteeditor/fonts/fonthintDefault",s );

	settings.setValue("/noteeditor/fonts/varFont", varFont.toString() );

	settings.setValue("/noteeditor/fonts/fixedFont", fixedFont.toString() );

}

bool TextEditor::isEmpty()

{

	if (e->toPlainText().length()>0)

		return false;

	else

		return true;

}

void TextEditor::setShowWithMain(bool v)

{

	showwithmain=v;

}

bool TextEditor::showWithMain()

{

	return showwithmain;

}

void TextEditor::setFontHint (const QString &fh)

{

	if (fh=="fixed")

		actionFormatUseFixedFont->setOn (true);

	else

		actionFormatUseFixedFont->setOn (false);

}

QString TextEditor::getFontHint()

{

	if (actionFormatUseFixedFont->isOn())

		return "fixed";

	else	

		return "var";

}

QString TextEditor::getFontHintDefault()

{

	if (actionSettingsFonthintDefault->isOn())

		return "fixed";

	else	

		return "var";

}

void TextEditor::setFilename(const QString &fn)

{

	if (state==filledEditor)

		if (fn.isEmpty() )

		{

			filename="";

			statusBar()->message( tr("No filename available for this note.","Statusbar message"), statusbarTime );

		}	

		else

		{

			filename=fn;

			statusBar()->message( tr(QString( "Current filename is %1" ).arg( filename ),"Statusbar message"), statusbarTime );

		}	

}

QString TextEditor::getFilename()

{

	return filename;

}

void TextEditor::setFilenameHint(const QString &fnh)

{

	filenameHint=fnh;

}

QString TextEditor::getFilenameHint()

{

	return filenameHint;

}

bool TextEditor::findText(const QString &t, const QTextDocument::FindFlags &flags)

{

	if (e->find (t,flags))

		return true;

	else	

		return false;

}

void TextEditor::setupFileActions()

{

    QToolBar *tb = addToolBar ( tr("Note Actions") );

	tb->setObjectName ("noteEditorFileActions");

    QMenu *fileMenu = menuBar()->addMenu( tr( "&Note","Menubar" ));

    QAction *a;

    a = new QAction( QPixmap( iconPath+"fileopen.png"), tr( "&Import..." ),this);

	a->setStatusTip (tr( "Import","Status tip for Note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_O );

    connect( a, SIGNAL( activated() ), this, SLOT( textLoad() ) );

	tb->addAction (a);

	fileMenu->addAction (a);

	actionFileLoad=a;

    fileMenu->addSeparator();

    a = new QAction( QPixmap(iconPath+"filesave.png" ), tr( "&Export..." ),this);

	a->setStatusTip (tr( "Export Note (HTML)","Status tip for Note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_S );

    connect( a, SIGNAL( activated() ), this, SLOT( textSave() ) );

	tb->addAction (a);

	fileMenu->addAction (a);

	actionFileSave=a;

    a = new QAction(  QPixmap(), tr( "Export &As... (HTML)" ), this);

	a->setStatusTip (tr( "Export Note As (HTML) ","Status tip for Note Menu"  ));

    connect( a, SIGNAL( activated() ), this, SLOT( textSaveAs() ) );

	fileMenu->addAction (a);

	actionFileSaveAs=a;

    a = new QAction(QPixmap(), tr( "Export &As...(ASCII)" ), this);

	a->setStatusTip ( tr( "Export Note As (ASCII) ","Status tip for note menu" ) );

	a->setShortcut(Qt::ALT + Qt::Key_X );

    connect( a, SIGNAL( activated() ), this, SLOT( textExportAsASCII() ) );

	fileMenu->addAction (a);

	actionFileSaveAs=a;

    fileMenu->addSeparator();

    a = new QAction( QPixmap(iconPath+"fileprint.png" ), tr( "&Print..." ),this);

	a->setStatusTip (tr( "Print Note","Status tip for note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_P );

    connect( a, SIGNAL( activated() ), this, SLOT( textPrint() ) );

	tb->addAction (a);

	fileMenu->addAction (a);

	actionFilePrint=a;

}

void TextEditor::setupEditActions()

{

    QToolBar *tb = addToolBar ( tr( "Edit Actions" ));

	tb->setObjectName ("noteEditorEditActions");

    QMenu *editMenu = menuBar()->addMenu ( tr( "&Edit" ));

    QAction *a;

    a = new QAction(QPixmap(iconPath+"undo.png"), tr( "&Undo" ), this );

	a->setStatusTip ( tr( "Undo","Status tip for note menu" ) );

	a->setShortcut(Qt::CTRL + Qt::Key_Z );

    connect( a, SIGNAL( activated() ), e, SLOT( undo() ) );

	editMenu->addAction (a);

	tb->addAction (a);

	actionEditUndo=a;

    a = new QAction(QPixmap(iconPath+"redo.png" ), tr( "&Redo" ),this); 

	a->setStatusTip ( tr( "Redo","Status tip for note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_Y );

    connect( a, SIGNAL( activated() ), e, SLOT( redo() ) );

	editMenu->addAction (a);

	tb->addAction (a);

	actionEditRedo=a;

    editMenu->addSeparator();

    a = new QAction(QPixmap(), tr( "Select and copy &all" ),this); 

	a->setStatusTip ( tr( "Select and copy all","Status tip for note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_A );

    connect( a, SIGNAL( activated() ), this, SLOT( editCopyAll() ) );

	editMenu->addAction (a);

    editMenu->addSeparator();

    a = new QAction(QPixmap(iconPath+"editcopy.png" ), tr( "&Copy" ),this);

	a->setStatusTip ( tr( "Copy","Status tip for note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_C );

    connect( a, SIGNAL( activated() ), e, SLOT( copy() ) );

	editMenu->addAction (a);

	tb->addAction (a);

	actionEditCopy=a;

    a = new QAction(QPixmap(iconPath+"editcut.png" ), tr( "Cu&t" ),this);

	a->setStatusTip ( tr( "Cut","Status tip for note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_X );

    connect( a, SIGNAL( activated() ), e, SLOT( cut() ) );

	editMenu->addAction (a);

	tb->addAction (a);

	actionEditCut=a;

    a = new QAction(QPixmap(iconPath+"editpaste.png" ), tr( "&Paste" ),this);

	a->setStatusTip ( tr( "Paste","Status tip for note menu" ) );

	a->setShortcut( Qt::CTRL + Qt::Key_V );

    connect( a, SIGNAL( activated() ), e, SLOT( paste() ) );

	editMenu->addAction (a);

	tb->addAction (a);

	actionEditPaste=a;

    a = new QAction( QPixmap( iconPath+"edittrash.png"), tr( "&Delete All" ), this);

	a->setStatusTip (tr( "Delete all","Status tip for note menu" ) );

    connect( a, SIGNAL( activated() ), e, SLOT( clear() ) );

	editMenu->addAction (a);

	tb->addAction (a);

	actionEditDeleteAll=a;

}

void TextEditor::setupFormatActions()

{

    QToolBar *tb = addToolBar ( tr("Format Actions" ));

	tb->setObjectName ("noteEditorFormatActions");

    QMenu *formatMenu = menuBar()->addMenu ( tr( "F&ormat" ));

    QAction *a;

    a = new QAction( QPixmap(iconPath+"formatfixedfont.png"), tr( "&Font hint" ), Qt::ALT + Qt::Key_I, this, "fontHint" );

	a->setStatusTip (tr( "Toggle font hint for the whole text","Status tip for note menu" ) );

	a->setToggleAction (true);

	a->setOn (settings.value("/noteeditor/fonts/useFixedByDefault",false).toBool() );

    connect( a, SIGNAL( activated() ), this, SLOT( toggleFonthint() ) );

	formatMenu->addAction (a);

	tb->addAction (a);

	actionFormatUseFixedFont=a;

    comboFont = new QComboBox;

	tb->addWidget (comboFont);

    QFontDatabase fontDB;

    comboFont->insertStringList( fontDB.families() );

    connect( comboFont, SIGNAL( activated( const QString & ) ),

	     this, SLOT( textFamily( const QString & ) ) );

    comboFont->addItem( QApplication::font().family() );

    comboSize = new QComboBox;

	tb->addWidget (comboSize);

	QList<int> sizes=fontDB.standardSizes();

	QList<int>::iterator i = sizes.begin();

	while (i != sizes.end()) 

	{

		++i; // increment i before using it

		comboSize->insertItem ( QString::number(*i));

	}	

    connect( comboSize, SIGNAL( activated( const QString & ) ),

	     this, SLOT( textSize( const QString & ) ) );

    comboSize->addItem ( QString::number( QApplication::font().pointSize() ) );

    formatMenu->addSeparator();

    QPixmap pix( 16, 16 );

    pix.fill( e->color());

    a = new QAction( pix, tr( "&Color..." ), this);

	formatMenu->addAction (a);

	tb->addAction (a);

    connect( a, SIGNAL( activated() ), this, SLOT( textColor() ) );

    actionTextColor=a;

    a = new QAction( QPixmap (iconPath+"text_bold.png"), tr( "&Bold" ), this);

	a->setShortcut(Qt::CTRL + Qt::Key_B );

    connect( a, SIGNAL( activated() ), this, SLOT( textBold() ) );

	tb->addAction (a);

	formatMenu->addAction (a);

    a->setToggleAction( true );

    actionTextBold=a;

    a = new QAction( QPixmap(iconPath+"text_italic.png"), tr( "&Italic" ),  this);

	a->setShortcut(Qt::CTRL + Qt::Key_I);

    connect( a, SIGNAL( activated() ), this, SLOT( textItalic() ) );

	tb->addAction (a);

	formatMenu->addAction (a);

    a->setToggleAction( true );

    actionTextItalic=a;

    a = new QAction( QPixmap (iconPath+"text_under.png"), tr( "&Underline" ), this);

	a->setShortcut(Qt::CTRL + Qt::Key_U );

    connect( a, SIGNAL( activated() ), this, SLOT( textUnderline() ) );

	tb->addAction (a);

	formatMenu->addAction (a);

    a->setToggleAction( true );

    actionTextUnderline=a;

    formatMenu->addSeparator();

    QActionGroup *grp2 = new QActionGroup( this );

    grp2->setExclusive(true);

    a = new QAction( QPixmap (iconPath+"text_sub.png"), tr( "Subs&cript" ),grp2 );

	a->setShortcut( Qt::CTRL + Qt::SHIFT + Qt::Key_B );

    a->setToggleAction( true );

	tb->addAction (a);

	formatMenu->addAction (a);

    connect(a, SIGNAL(activated()), this, SLOT(textVAlign()));

    actionAlignSubScript=a;

    a = new QAction( QPixmap (iconPath+"text_super.png"), tr( "Su&perscript" ),grp2  );

	a->setShortcut( Qt::CTRL + Qt::SHIFT + Qt::Key_P );

    a->setToggleAction( true );

	tb->addAction (a);

	formatMenu->addAction (a);

    connect(a, SIGNAL(activated()), this, SLOT(textVAlign()));

    actionAlignSuperScript=a;

    QActionGroup *grp = new QActionGroup( this );

    connect( grp, SIGNAL( selected( QAction* ) ), this, SLOT( textAlign( QAction* ) ) );

    formatMenu->addSeparator();

    a = new QAction( QPixmap (iconPath+"text_left.png"), tr( "&Left" ),grp );

	a->setShortcut( Qt::CTRL+Qt::Key_L );

    a->setToggleAction( true );

	tb->addAction (a);

	formatMenu->addAction (a);

    actionAlignLeft=a;

    a = new QAction( QPixmap (iconPath+"text_center.png"), tr( "C&enter" ),grp);

    a->setShortcut(  Qt::CTRL + Qt::Key_E);

    a->setToggleAction( true );

	tb->addAction (a);

	formatMenu->addAction (a);

    actionAlignCenter=a;

    a = new QAction( QPixmap (iconPath+"text_right.png" ), tr( "&Right" ), grp);

	a->setShortcut(Qt::CTRL + Qt::Key_R );

    a->setToggleAction( true );

	tb->addAction (a);

	formatMenu->addAction (a);

    actionAlignRight=a;

    a = new QAction( QPixmap ( iconPath+"text_block.png"), tr( "&Justify" ), grp );

	a->setShortcut(Qt::CTRL + Qt::Key_J );

    a->setToggleAction( true );

	tb->addAction (a);

	formatMenu->addAction (a);

    actionAlignJustify=a;

}

void TextEditor::setupSettingsActions()

{

    QMenu *settingsMenu = menuBar()->addMenu ( tr( "&Settings" ));

    QAction *a;

    a = new QAction(tr( "Set &fixed font" ), this);

	a->setStatusTip ( tr( "Set fixed font","Status tip for note menu" ));

    connect( a, SIGNAL( activated() ), this, SLOT( setFixedFont() ) );

	settingsMenu->addAction (a);

	actionSettingsFixedFont=a;

    a = new QAction(tr( "Set &variable font" ), this);

	a->setStatusTip ( tr( "Set variable font","Status tip for note menu" ) );

    connect( a, SIGNAL( activated() ), this, SLOT( setVarFont() ) );

	settingsMenu->addAction (a);

	actionSettingsVarFont=a;

    a = new QAction(tr( "&fixed font is default" ),  this);

	a->setStatusTip (tr( "Used fixed font by default","Status tip for note menu" ) );

	a->setToggleAction (true);

	// set state later in constructor...

	settingsMenu->addAction (a);

	actionSettingsFonthintDefault=a;

}

void TextEditor::textLoad()

{

	if (state!=inactiveEditor)

	{

		if (e->text().length()) 

		{

			QMessageBox mb( vymName + " - " +tr("Note Editor"),

				"Loading will overwrite the existing note",

				QMessageBox::Warning,

				QMessageBox::Yes | QMessageBox::Default,

				QMessageBox::Cancel,

				0 );

			mb.setButtonText( QMessageBox::Yes, "Load note" );

			switch( mb.exec() ) {

				case QMessageBox::Cancel:

					return;

					break;

			}

		} 

		// Load note

		QFileDialog *fd=new QFileDialog( this);

		QStringList types;

		types<< "VYM notes (*.html)" <<

			"ASCII texts (*.txt)" <<

			"All filed (*)";

		fd->setFilters (types);

		fd->setDirectory (QDir().current());

		fd->show();

		QString fn;

		if ( fd->exec() == QDialog::Accepted )

			fn = fd->selectedFile();

		if ( !fn.isEmpty() )

		{

			QFile f( fn );

			if ( !f.open( QIODevice::ReadOnly ) )

			return;

			QTextStream ts( &f );

			setText( ts.read() );

			editorChanged();

		}

	}

}

void TextEditor::closeEvent( QCloseEvent* ce )

{

    ce->accept();	// TextEditor can be reopened with show()

    showwithmain=false;

	emit (windowClosed() );

    return;

}

QString TextEditor::getText()

{

	if (e->toPlainText().isEmpty())

		return "";

	else	

		return e->text();

}

void TextEditor::editorChanged()

{

	if (isEmpty())

		state=emptyEditor;

	else

		state=filledEditor;

		if (state==emptyEditor)

			setState (emptyEditor);

		else

			setState (filledEditor);

	// SLOT is LinkableMapObj, which will update systemFlag

	if (!blockChangedSignal) emit (textHasChanged() );

}

void TextEditor::setText(QString t)

{

	blockChangedSignal=true;

	e->setReadOnly(false);

	e->setText(t);

	enableActions();

	blockChangedSignal=false;

}

void TextEditor::setInactive()

{

	state=inactiveEditor;

	setText("");

	setState (inactiveEditor);

	e->setReadOnly (true);

	disableActions();

}

void TextEditor::editCopyAll()

{

	e->selectAll();

	e->copy();

}

void TextEditor::textSaveAs()

{

    QString fn = QFileDialog::getSaveFileName( QString::null, "VYM Note (HTML) (*.html);;All files (*)",

					       this,"export note dialog",tr("Export Note to single file") );

    if ( !fn.isEmpty() ) 

	{

		QFile file (fn);

		if (file.exists())

		{

			QMessageBox mb( vymName,

				tr("The file %1\nexists already.\nDo you want to overwrite it?","dialog 'save note as'").arg(fn),

			QMessageBox::Warning,

			QMessageBox::Yes | QMessageBox::Default,

			QMessageBox::Cancel | QMessageBox::Escape,

			Qt::NoButton );

			mb.setButtonText( QMessageBox::Yes, tr("Overwrite") );

			mb.setButtonText( QMessageBox::No, tr("Cancel"));

			switch( mb.exec() ) {

				case QMessageBox::Yes:

					// save 

					filename = fn;

					textSave();

					return;

				case QMessageBox::Cancel:

					// do nothing

					break;

			}

		} else

		{

			filename = fn;

			textSave();

			return;

		}			

    }

	statusBar()->message(tr( "Couldn't export note ","dialog 'save note as'") + fn, statusbarTime );

}

void TextEditor::textSave()

{

    if ( filename.isEmpty() ) 

	{

		textSaveAs();

		return;

    }

    QString text = e->text();

    QFile f( filename );

    if ( !f.open( QIODevice::WriteOnly ) ) 

	{

		statusBar()->message( QString("Could not write to %1").arg(filename),

					  statusbarTime );

		return;

    }

    QTextStream t( &f );

    t << text;

    f.close();

    e->setModified( FALSE );

    statusBar()->message( QString( "Note exported as %1" ).arg( filename ), statusbarTime );

}

void TextEditor::textExportAsASCII()

{

	QString text = NoteObj (e->text()).getNoteASCII();

	QString fn,s;

	if (!filenameHint.isEmpty())

	{

		if (!filenameHint.contains (".txt"))

			s=filenameHint+".txt";

		else	

			s=filenameHint;

	} else	

		s=QString::null;

	fn = QFileDialog::getSaveFileName( s, "VYM Note (ASCII) (*.txt);;All files (*)", this,"export note dialog",tr("Export Note to single file (ASCII)") );

	int ret=-1;

    if ( !fn.isEmpty() ) 

	{

		QFile file (fn);

		if (file.exists())

		{

			QMessageBox mb( vymName,

				tr("The file %1\nexists already.\nDo you want to overwrite it?","dialog 'save note as'").arg(fn),

			QMessageBox::Warning,

			QMessageBox::Yes | QMessageBox::Default,

			QMessageBox::Cancel | QMessageBox::Escape,

			Qt::NoButton );

			mb.setButtonText( QMessageBox::Yes, tr("Overwrite") );

			mb.setButtonText( QMessageBox::No, tr("Cancel"));

			ret=mb.exec();

		}	

		if (ret==QMessageBox::Cancel)

			return;

		// save 

		if ( !file.open( QIODevice::WriteOnly ) ) 

			statusBar()->message( QString("Could not write to %1").arg(filename),

						  statusbarTime );

		else

		{

			QTextStream t( &file );

			t << text;

			file.close();

			statusBar()->message( QString( "Note exported as %1" ).arg( fn ), statusbarTime );

		}

    }

}

void TextEditor::textPrint()

{

    QTextDocument *document = e->document();

    QPrinter printer;

    QPrintDialog *dialog = new QPrintDialog(&printer, this);

    dialog->setWindowTitle(tr("Print Note"));

    if (dialog->exec() != QDialog::Accepted)

        return;

    document->print(&printer);

}

void TextEditor::textEditUndo()

{

}

void TextEditor::toggleFonthint()

{

	setUpdatesEnabled (false);

	e->selectAll ();

	if (!actionFormatUseFixedFont->isOn() ) 

		e->setCurrentFont (varFont);

	else	

		e->setCurrentFont (fixedFont);

	e->selectAll ();

	setUpdatesEnabled (true);

	repaint();

}

void TextEditor::setFixedFont()

{

	bool ok;

	QFont font =QFontDialog::getFont(

                    &ok, fixedFont, this );

    if ( ok ) 

        // font is set to the font the user selected

		fixedFont=font;

}

void TextEditor::setVarFont()

{

	bool ok;

	QFont font =QFontDialog::getFont(

                    &ok, varFont, this );

    if ( ok ) 

        // font is set to the font the user selected

		varFont=font;

}

void TextEditor::textBold()

{

    e->setBold( actionTextBold->isOn() );

}

void TextEditor::textUnderline()

{

    e->setUnderline( actionTextUnderline->isOn() );

}

void TextEditor::textItalic()

{

    e->setItalic( actionTextItalic->isOn() );

}

void TextEditor::textFamily( const QString &f )

{

    e->setFamily( f );

}

void TextEditor::textSize( const QString &p )

{

    e->setPointSize( p.toInt() );

}

void TextEditor::textColor()

{

    QColor col = QColorDialog::getColor( e->color(), this );

    if ( !col.isValid() ) return;

    e->setColor( col );

    QPixmap pix( 16, 16 );

    pix.fill( Qt::black );

    actionTextColor->setIconSet( pix );

}

void TextEditor::textAlign( QAction *a )

{

    if ( a == actionAlignLeft )

		e->setAlignment( Qt::AlignLeft );

    else if ( a == actionAlignCenter )

		e->setAlignment( Qt::AlignHCenter );

    else if ( a == actionAlignRight )

		e->setAlignment( Qt::AlignRight );

    else if ( a == actionAlignJustify )

		e->setAlignment( Qt::AlignJustify );

}

void TextEditor::textVAlign()

{

	QTextCharFormat format;

    if ( sender() == actionAlignSuperScript && actionAlignSuperScript->isOn()) {

		format.setVerticalAlignment(QTextCharFormat::AlignSuperScript);

    } else if (sender() == actionAlignSubScript && actionAlignSubScript->isOn()) {

		format.setVerticalAlignment(QTextCharFormat::AlignSubScript);

    } else {

		format.setVerticalAlignment(QTextCharFormat::AlignNormal);

    }

	e->mergeCurrentCharFormat(format);

}

void TextEditor::fontChanged( const QFont &f )

{

	int i=comboFont->findText(f.family());

    if (i>=0) comboFont->setCurrentIndex (i);

	i=comboSize->findText(QString::number(f.pointSize()));

	if (i>=0) comboSize->setCurrentIndex(i);

    actionTextBold->setOn( f.bold() );

    actionTextItalic->setOn( f.italic() );

    actionTextUnderline->setOn( f.underline() );

}

void TextEditor::colorChanged( const QColor &c )

{

    QPixmap pix( 16, 16 );

    pix.fill( c );

    actionTextColor->setIconSet( pix );

}

void TextEditor::formatChanged( const QTextCharFormat &f )

{

	fontChanged(f.font());

    colorChanged(f.foreground().color());

    alignmentChanged(e->alignment());

	verticalAlignmentChanged (f.verticalAlignment());

}

void TextEditor::alignmentChanged( int a )

{

    if ( ( a == Qt::AlignLeft ) || ( a & Qt::AlignLeft ))

		actionAlignLeft->setOn( true );

    else if ( ( a & Qt::AlignHCenter ) )

		actionAlignCenter->setOn( true );

    else if ( ( a & Qt::AlignRight ) )

		actionAlignRight->setOn( true );

    else if ( ( a & Qt::AlignJustify ) )

		actionAlignJustify->setOn( true );

}

void TextEditor::verticalAlignmentChanged(QTextCharFormat::VerticalAlignment a)

{

	actionAlignSubScript->setOn (false);

	actionAlignSuperScript->setOn (false);

	switch (a)

	{

		case QTextCharFormat::AlignSuperScript: 

			actionAlignSuperScript->setOn (true);

			break;

		case QTextCharFormat::AlignSubScript:

			actionAlignSubScript->setOn (true);

			break;

		default: ;	

	}

}

void TextEditor::enableActions()

{

	actionFileLoad->setEnabled(true);

	actionFileSave->setEnabled(true);

	actionFileSaveAs->setEnabled(true);

	actionFilePrint->setEnabled(true);

	actionEditUndo->setEnabled(true);

	actionEditRedo->setEnabled(true);

	actionEditCopy->setEnabled(true);

	actionEditCut->setEnabled(true);

	actionEditPaste->setEnabled(true);

	actionEditDeleteAll->setEnabled(true);

	actionFormatUseFixedFont->setEnabled(true);

}

void TextEditor::disableActions()

{

	actionFileLoad->setEnabled(false);

	actionFileSave->setEnabled(false);

	actionFileSaveAs->setEnabled(false);

	actionFilePrint->setEnabled(false);

	actionEditUndo->setEnabled(false);

	actionEditRedo->setEnabled(false);

	actionEditCopy->setEnabled(false);

	actionEditCut->setEnabled(false);

	actionEditPaste->setEnabled(false);

	actionEditDeleteAll->setEnabled(false);

	actionFormatUseFixedFont->setEnabled(false);

}

void TextEditor::setState (EditorState s)

{

	QPalette p=palette();

	QColor c;

	switch (s)

	{

		case emptyEditor:    c=QColor (150,150,150); break;

		case filledEditor:   c=QColor (255,255,255); break;

		case inactiveEditor: c=QColor (0,0,0);

	}

    p.setColor(QPalette::Active, static_cast<QPalette::ColorRole>(9), c);

    p.setColor(QPalette::Inactive, static_cast<QPalette::ColorRole>(9), c);

    e->setPalette(p);

}