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104 lines
2.9 KiB
104 lines
2.9 KiB
14 years ago
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/****************************************************************************
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "outlinetree.h"
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#include <qfile.h>
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#include <qmessagebox.h>
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OutlineTree::OutlineTree( const QString fileName, QWidget *parent, const char *name )
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: QListView( parent, name )
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{
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// div. configuration of the list view
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addColumn( "Outlines" );
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setSorting( -1 );
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setRootIsDecorated( TRUE );
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// read the XML file and create DOM tree
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QFile opmlFile( fileName );
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if ( !opmlFile.open( IO_ReadOnly ) ) {
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QMessageBox::critical( 0,
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tr( "Critical Error" ),
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tr( "Cannot open file %1" ).arg( fileName ) );
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return;
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}
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if ( !domTree.setContent( &opmlFile ) ) {
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QMessageBox::critical( 0,
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tr( "Critical Error" ),
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tr( "Parsing error for file %1" ).arg( fileName ) );
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opmlFile.close();
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return;
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}
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opmlFile.close();
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// get the header information from the DOM
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QDomElement root = domTree.documentElement();
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QDomNode node;
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node = root.firstChild();
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while ( !node.isNull() ) {
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if ( node.isElement() && node.nodeName() == "head" ) {
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QDomElement header = node.toElement();
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getHeaderInformation( header );
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break;
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}
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node = node.nextSibling();
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}
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// create the tree view out of the DOM
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node = root.firstChild();
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while ( !node.isNull() ) {
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if ( node.isElement() && node.nodeName() == "body" ) {
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QDomElement body = node.toElement();
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buildTree( 0, body );
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break;
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}
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node = node.nextSibling();
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}
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}
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OutlineTree::~OutlineTree()
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{
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}
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void OutlineTree::getHeaderInformation( const QDomElement &header )
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{
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// visit all children of the header element and look if you can make
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// something with it
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QDomNode node = header.firstChild();
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while ( !node.isNull() ) {
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if ( node.isElement() ) {
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// case for the different header entries
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if ( node.nodeName() == "title" ) {
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QDomText textChild = node.firstChild().toText();
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if ( !textChild.isNull() ) {
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setColumnText( 0, textChild.nodeValue() );
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}
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}
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}
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node = node.nextSibling();
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}
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}
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void OutlineTree::buildTree( QListViewItem *parentItem, const QDomElement &parentElement )
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{
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QListViewItem *thisItem = 0;
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QDomNode node = parentElement.firstChild();
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while ( !node.isNull() ) {
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if ( node.isElement() && node.nodeName() == "outline" ) {
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// add a new list view item for the outline
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if ( parentItem == 0 )
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thisItem = new QListViewItem( this, thisItem );
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else
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thisItem = new QListViewItem( parentItem, thisItem );
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thisItem->setText( 0, node.toElement().attribute( "text" ) );
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// recursive build of the tree
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buildTree( thisItem, node.toElement() );
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}
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node = node.nextSibling();
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}
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}
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