/****************************************************************************** $Id: qt/outlinetree.cpp   3.3.4   edited May 27 2003 $**** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.**** This file is part of an example program for Qt.  This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "outlinetree.h"#include <qfile.h>#include <qmessagebox.h>OutlineTree::OutlineTree( const QString fileName, QWidget *parent, const char *name )    : QListView( parent, name ){    // div. configuration of the list view    addColumn( "Outlines" );    setSorting( -1 );    setRootIsDecorated( TRUE );    // read the XML file and create DOM tree    QFile opmlFile( fileName );    if ( !opmlFile.open( IO_ReadOnly ) ) {	QMessageBox::critical( 0,		tr( "Critical Error" ),		tr( "Cannot open file %1" ).arg( fileName ) );	return;    }    if ( !domTree.setContent( &opmlFile ) ) {	QMessageBox::critical( 0,		tr( "Critical Error" ),		tr( "Parsing error for file %1" ).arg( fileName ) );	opmlFile.close();	return;    }    opmlFile.close();    // get the header information from the DOM    QDomElement root = domTree.documentElement();    QDomNode node;    node = root.firstChild();    while ( !node.isNull() ) {	if ( node.isElement() && node.nodeName() == "head" ) {	    QDomElement header = node.toElement();	    getHeaderInformation( header );	    break;	}	node = node.nextSibling();    }    // create the tree view out of the DOM    node = root.firstChild();    while ( !node.isNull() ) {	if ( node.isElement() && node.nodeName() == "body" ) {	    QDomElement body = node.toElement();	    buildTree( 0, body );	    break;	}	node = node.nextSibling();    }}OutlineTree::~OutlineTree(){}void OutlineTree::getHeaderInformation( const QDomElement &header ){    // visit all children of the header element and look if you can make    // something with it    QDomNode node = header.firstChild();    while ( !node.isNull() ) {	if ( node.isElement() ) {	    // case for the different header entries	    if ( node.nodeName() == "title" ) {		QDomText textChild = node.firstChild().toText();		if ( !textChild.isNull() ) {		    setColumnText( 0, textChild.nodeValue() );		}	    }	}	node = node.nextSibling();    }}void OutlineTree::buildTree( QListViewItem *parentItem, const QDomElement &parentElement ){    QListViewItem *thisItem = 0;    QDomNode node = parentElement.firstChild();    while ( !node.isNull() ) {	if ( node.isElement() && node.nodeName() == "outline" ) {	    // add a new list view item for the outline	    if ( parentItem == 0 )		thisItem = new QListViewItem( this, thisItem );	    else		thisItem = new QListViewItem( parentItem, thisItem );	    thisItem->setText( 0, node.toElement().attribute( "text" ) );	    // recursive build of the tree	    buildTree( thisItem, node.toElement() );	}	node = node.nextSibling();    }}