home *** CD-ROM | disk | FTP | other *** search
- /****************************************************************************
- ** $Id: qt/outlinetree.cpp 3.0.3 edited Oct 12 12:18 $
- **
- ** 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();
- }
- }
-