Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 271 insertions, 0 deletions

diff --git a/khelpcenter/toc.cpp b/khelpcenter/toc.cpp
new file mode 100644
index 000000000..6b2beadc9
--- /dev/null
+++ b/khelpcenter/toc.cpp
@@ -0,0 +1,271 @@
+/*
+ *  This file is part of the KDE Help Center
+ *
+ *  Copyright (C) 2002 Frerich Raabe (raabe@kde.org)
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "toc.h"
+
+#include "docentry.h"
+
+#include <kiconloader.h>
+#include <kprocess.h>
+#include <kstandarddirs.h>
+#include <kdebug.h>
+
+#include <qdir.h>
+#include <qfileinfo.h>
+
+#include <sys/stat.h>
+
+using namespace KHC;
+
+class TOCItem : public NavigatorItem
+{
+	public:
+		TOCItem( TOC *parent, QListViewItem *parentItem, QListViewItem *after, const QString &text );
+
+		const TOC *toc() const { return m_toc; }
+
+	private:
+		TOC *m_toc;
+};
+
+class TOCChapterItem : public TOCItem
+{
+	public:
+		TOCChapterItem( TOC *toc, NavigatorItem *parent, QListViewItem *after, const QString &title, 
+				const QString &name );
+
+		virtual QString url();
+			
+	private:
+		QString m_name;
+};
+
+class TOCSectionItem : public TOCItem
+{
+	public:
+		TOCSectionItem( TOC *toc, TOCChapterItem *parent, QListViewItem *after, const QString &title, 
+				const QString &name );
+
+		virtual QString url();
+	
+	private:
+		QString m_name;
+};
+
+TOC::TOC( NavigatorItem *parentItem )
+{
+	m_parentItem = parentItem;
+}
+
+void TOC::build( const QString &file )
+{
+	QFileInfo fileInfo( file );
+	QString fileName = fileInfo.absFilePath();
+	const QStringList resourceDirs = KGlobal::dirs()->resourceDirs( "html" );
+	QStringList::ConstIterator it = resourceDirs.begin();
+	QStringList::ConstIterator end = resourceDirs.end();
+	for ( ; it != end; ++it ) {
+		if ( fileName.startsWith( *it ) ) {
+			fileName.remove( 0, ( *it ).length() );
+			break;
+		}
+	}
+
+	QString cacheFile = fileName.replace( QDir::separator(), "__" );
+	m_cacheFile = locateLocal( "cache", "help/" + cacheFile );
+	m_sourceFile = file;
+
+	if ( cacheStatus() == NeedRebuild )
+		buildCache();
+	else
+		fillTree();
+}
+
+TOC::CacheStatus TOC::cacheStatus() const
+{
+	if ( !QFile::exists( m_cacheFile ) ||
+	     sourceFileCTime() != cachedCTime() )
+		return NeedRebuild;
+
+	return CacheOk;
+}
+
+int TOC::sourceFileCTime() const
+{
+	struct stat stat_buf;
+	stat( QFile::encodeName( m_sourceFile ).data(), &stat_buf );
+
+	return stat_buf.st_ctime;
+}
+
+int TOC::cachedCTime() const
+{
+	QFile f( m_cacheFile );
+	if ( !f.open( IO_ReadOnly ) )
+		return 0;
+	
+	QDomDocument doc;
+	if ( !doc.setContent( &f ) )
+		return 0;
+
+	QDomComment timestamp = doc.documentElement().lastChild().toComment();
+
+	return timestamp.data().stripWhiteSpace().toInt();
+}
+
+void TOC::buildCache()
+{
+	KProcess *meinproc = new KProcess;
+	connect( meinproc, SIGNAL( processExited( KProcess * ) ),
+	         this, SLOT( meinprocExited( KProcess * ) ) );
+
+	*meinproc << locate( "exe", "meinproc" );
+	*meinproc << "--stylesheet" << locate( "data", "khelpcenter/table-of-contents.xslt" );
+	*meinproc << "--output" << m_cacheFile;
+	*meinproc << m_sourceFile;
+
+	meinproc->start( KProcess::NotifyOnExit );
+}
+
+void TOC::meinprocExited( KProcess *meinproc )
+{
+	if ( !meinproc->normalExit() || meinproc->exitStatus() != 0 ) {
+		delete meinproc;
+		return;
+	}
+
+	delete meinproc;
+
+	QFile f( m_cacheFile );
+	if ( !f.open( IO_ReadWrite ) )
+		return;
+
+	QDomDocument doc;
+	if ( !doc.setContent( &f ) )
+		return;
+
+	QDomComment timestamp = doc.createComment( QString::number( sourceFileCTime() ) );
+	doc.documentElement().appendChild( timestamp );
+
+	f.at( 0 );
+	QTextStream stream( &f );
+	stream.setEncoding( QTextStream::UnicodeUTF8 );
+	stream << doc.toString();
+
+	f.close();
+
+	fillTree();
+}
+
+void TOC::fillTree()
+{
+	QFile f( m_cacheFile );
+	if ( !f.open( IO_ReadOnly ) )
+		return;
+
+	QDomDocument doc;
+	if ( !doc.setContent( &f ) )
+		return;
+	
+	TOCChapterItem *chapItem = 0;
+	QDomNodeList chapters = doc.documentElement().elementsByTagName( "chapter" );
+	for ( unsigned int chapterCount = 0; chapterCount < chapters.count(); chapterCount++ ) {
+		QDomElement chapElem = chapters.item( chapterCount ).toElement();
+		QDomElement chapTitleElem = childElement( chapElem, QString::fromLatin1( "title" ) );
+		QString chapTitle = chapTitleElem.text().simplifyWhiteSpace();
+		QDomElement chapRefElem = childElement( chapElem, QString::fromLatin1( "anchor" ) );
+		QString chapRef = chapRefElem.text().stripWhiteSpace();
+
+		chapItem = new TOCChapterItem( this, m_parentItem, chapItem, chapTitle, chapRef );
+
+		TOCSectionItem *sectItem = 0;
+		QDomNodeList sections = chapElem.elementsByTagName( "section" );
+		for ( unsigned int sectCount = 0; sectCount < sections.count(); sectCount++ ) {
+			QDomElement sectElem = sections.item( sectCount ).toElement();
+			QDomElement sectTitleElem = childElement( sectElem, QString::fromLatin1( "title" ) );
+			QString sectTitle = sectTitleElem.text().simplifyWhiteSpace();
+			QDomElement sectRefElem = childElement( sectElem, QString::fromLatin1( "anchor" ) );
+			QString sectRef = sectRefElem.text().stripWhiteSpace();
+
+			sectItem = new TOCSectionItem( this, chapItem, sectItem, sectTitle, sectRef );
+		}
+	}
+
+  m_parentItem->setOpen( true );
+}
+
+QDomElement TOC::childElement( const QDomElement &element, const QString &name )
+{
+	QDomElement e;
+	for ( e = element.firstChild().toElement(); !e.isNull(); e = e.nextSibling().toElement() )
+		if ( e.tagName() == name )
+			break;
+	return e;
+}
+
+void TOC::slotItemSelected( QListViewItem *item )
+{
+	TOCItem *tocItem;
+	if ( ( tocItem = dynamic_cast<TOCItem *>( item ) ) )
+		emit itemSelected( tocItem->entry()->url() );
+
+	item->setOpen( !item->isOpen() );
+}
+
+TOCItem::TOCItem( TOC *toc, QListViewItem *parentItem, QListViewItem *after, const QString &text )
+	: NavigatorItem( new DocEntry( text ), parentItem, after )
+{
+        setAutoDeleteDocEntry( true );
+	m_toc = toc;
+}
+
+TOCChapterItem::TOCChapterItem( TOC *toc, NavigatorItem *parent, QListViewItem *after,
+				const QString &title, const QString &name )
+	: TOCItem( toc, parent, after, title ),
+	m_name( name )
+{
+	setOpen( false );
+	entry()->setUrl(url());
+}
+
+QString TOCChapterItem::url()
+{
+	return "help:" + toc()->application() + "/" + m_name + ".html";
+}
+
+TOCSectionItem::TOCSectionItem( TOC *toc, TOCChapterItem *parent, QListViewItem *after,
+				const QString &title, const QString &name )
+	: TOCItem( toc, parent, after, title ),
+	m_name( name )
+{
+	setPixmap( 0, SmallIcon( "document" ) );
+	entry()->setUrl(url());
+}
+
+QString TOCSectionItem::url()
+{
+	if ( static_cast<TOCSectionItem *>( parent()->firstChild() ) == this )
+		return static_cast<TOCChapterItem *>( parent() )->url() + "#" + m_name;
+	
+	return "help:" + toc()->application() + "/" + m_name + ".html";
+}
+
+#include "toc.moc"
+// vim:ts=2:sw=2:et