/******************************************************************************** Copyright (C) 1992-$THISYEAR$ Trolltech AS. All rights reserved.**** This file is part of the $MODULE$ of the Qt Toolkit.**** $LICENSE$**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#include "browser.h"#include "editor.h"#include "q3richtext_p.h"//Added by qt3to4:#include <QMouseEvent>#include <QKeyEvent>#include <QEvent>EditorBrowser::EditorBrowser( Editor *e )    : curEditor( e ), oldHighlightedParag( 0 ){    curEditor = e;    QFont fn( curEditor->font() );    fn.setUnderline( true );    highlightedFormat = new Q3TextFormat( fn, Qt::blue );}EditorBrowser::~EditorBrowser(){    delete highlightedFormat;}bool EditorBrowser::eventFilter( QObject *o, QEvent *e ){    if ( qobject_cast<Editor*>(o->parent()) || qobject_cast<Editor*>(o) ) {	QMouseEvent *me;	QKeyEvent *ke;	switch ( e->type() ) {	case QEvent::MouseMove:	    me = (QMouseEvent*)e;	    if ( ( me->state() & Qt::ControlModifier ) == Qt::ControlModifier ) {		curEditor->viewport()->setCursor( Qt::PointingHandCursor );		Q3TextCursor c( curEditor->document() );		curEditor->placeCursor( curEditor->viewportToContents( me->pos() ), &c );		Q3TextCursor from, to;		if ( oldHighlightedParag ) {		    oldHighlightedParag->setEndState( -1 );		    oldHighlightedParag->format();		    oldHighlightedParag = 0;		}		if ( findCursor( c, from, to ) && from.paragraph() == to.paragraph() ) {		    // avoid collision with other selections		    for ( int i = 0; i < curEditor->document()->numSelections(); ++i )			curEditor->document()->removeSelection( i );		    from.paragraph()->setFormat( from.index(), to.index() - from.index() + 1, highlightedFormat, false );		    lastWord = from.paragraph()->string()->toString().mid( from.index(), to.index() - from.index() + 1 );		    oldHighlightedParag = from.paragraph();		} else {		    lastWord = "";		}		curEditor->repaintChanged();		return true;	    }	    break;	case QEvent::MouseButtonPress: {	    bool killEvent = !lastWord.isEmpty();	    if ( !lastWord.isEmpty() )		showHelp( lastWord );	    lastWord = "";	    curEditor->viewport()->setCursor( Qt::IBeamCursor );	    if ( oldHighlightedParag ) {		oldHighlightedParag->setEndState( -1 );		oldHighlightedParag->format();		curEditor->repaintChanged();		oldHighlightedParag = 0;	    }	    if ( killEvent )		return true;	} break;	case QEvent::KeyRelease:	    lastWord = "";	    ke = (QKeyEvent*)e;	    if ( ke->key() == Qt::Key_Control ) {		curEditor->viewport()->setCursor( Qt::IBeamCursor );		if ( oldHighlightedParag ) {		    oldHighlightedParag->setEndState( -1 );		    oldHighlightedParag->format();		    curEditor->repaintChanged();		    oldHighlightedParag = 0;		}	    }	default:	    break;	}    }    return false;}void EditorBrowser::setCurrentEdior( Editor *e ){    curEditor = e;    curEditor->installEventFilter( this );}void EditorBrowser::addEditor( Editor *e ){    e->installEventFilter( this );}bool EditorBrowser::findCursor( const Q3TextCursor &c, Q3TextCursor &from, Q3TextCursor &to ){    from = c;    while ( from.paragraph()->at( from.index() )->c != ' ' && from.paragraph()->at( from.index() )->c != '\t'  && from.index() > 0 )	from.gotoLeft();    if ( from.paragraph()->at( from.index() )->c == ' ' || from.paragraph()->at( from.index() )->c == '\t' )	from.gotoRight();    to = c;    while ( to.paragraph()->at( to.index() )->c != ' ' && to.paragraph()->at( to.index() )->c != '\t' &&	    to.index() < to.paragraph()->length() - 1 )	to.gotoRight();    if ( to.paragraph()->at( to.index() )->c == ' ' || to.paragraph()->at( to.index() )->c == '\t' )	to.gotoLeft();    return true;}