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  • Committer: Package Import Robot
  • Author(s): Scott Kitterman
  • Date: 2012-11-20 13:16:59 UTC
  • Revision ID: package-import@ubuntu.com-20121120131659-o1ohtb1k8803vr7p
Tags: upstream-4.9.80
Import upstream version 4.9.80

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ui/metadatafilter.cpp
 
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/*
 
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    <one line to give the library's name and an idea of what it does.>
 
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    Copyright (C) 2012  Vishesh Handa <me@vhanda.in>
 
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    Adapated from KFileMetadataWidget
 
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    Copyright (C) 2008 by Sebastian Trueg <trueg@kde.org>
 
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    Copyright (C) 2009-2010 by Peter Penz <peter.penz@gmx.at>
 
8
 
 
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    This library is free software; you can redistribute it and/or
 
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    modify it under the terms of the GNU Lesser General Public
 
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    License as published by the Free Software Foundation; either
 
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    version 2.1 of the License, or (at your option) any later version.
 
13
 
 
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    This library is distributed in the hope that it will be useful,
 
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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    Lesser General Public License for more details.
 
18
 
 
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    You should have received a copy of the GNU Lesser General Public
 
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    License along with this library; if not, write to the Free Software
 
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    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
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*/
 
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#include "metadatafilter.h"
 
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#include <KConfig>
 
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#include <KConfigGroup>
 
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#include <Nepomuk2/Types/Property>
 
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#include <Nepomuk2/Variant>
 
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#include <Soprano/Vocabulary/RDF>
 
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#include <Soprano/Vocabulary/NAO>
 
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using namespace Soprano::Vocabulary;
 
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namespace Nepomuk2 {
 
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MetadataFilter::MetadataFilter(QObject* parent): QObject(parent)
 
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{
 
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    initMetaInformationSettings();
 
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}
 
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MetadataFilter::~MetadataFilter()
 
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{
 
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}
 
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void MetadataFilter::initMetaInformationSettings()
 
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{
 
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    const int currentVersion = 4; // increase version, if the blacklist of disabled
 
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    // properties should be updated
 
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    KConfig config("kmetainformationrc", KConfig::NoGlobals);
 
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    if (config.group("Misc").readEntry("version", 0) < currentVersion) {
 
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        // The resource file is read the first time. Assure
 
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        // that some meta information is disabled per default.
 
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        // clear old info
 
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        config.deleteGroup("Show");
 
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        KConfigGroup settings = config.group("Show");
 
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        static const char* const disabledProperties[] = {
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#comment",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#contentSize",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#depends",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#isPartOf",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#lastModified",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#created",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#contentCreated",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#mimeType",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#plainTextContent",
 
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            "http://www.semanticdesktop.org/ontologies/2007/01/19/nie#url",
 
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            "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#averageBitrate",
 
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            "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#channels",
 
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            "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#fileName",
 
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            "http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#fileSize",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#apertureValue",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#exposureBiasValue",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#exposureTime",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#flash",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#focalLength",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#focalLengthIn35mmFilm",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#isoSpeedRatings",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#make",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#meteringMode",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#model",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#orientation",
 
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            "http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#whiteBalance",
 
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            "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#modified",
 
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            "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#lastModified",
 
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            "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#created",
 
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            "http://www.semanticdesktop.org/ontologies/2007/08/15/nao#annotation",
 
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            "http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
 
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            "kfileitem#owner",
 
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            "kfileitem#permissions",
 
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            0 // mandatory last entry
 
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        };
 
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        for (int i = 0; disabledProperties[i] != 0; ++i) {
 
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            settings.writeEntry(disabledProperties[i], false);
 
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        }
 
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        // mark the group as initialized
 
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        config.group("Misc").writeEntry("version", currentVersion);
 
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    }
 
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}
 
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QHash<QUrl, Variant> MetadataFilter::filter(const QHash<QUrl, Nepomuk2::Variant>& data)
 
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{
 
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    if( data.isEmpty() )
 
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        return data;
 
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    QList<QUrl> types = data.value( RDF::type() ).toUrlList();
 
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    //
 
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    // Special filtering for certain types
 
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    //
 
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    if( types.contains( NAO::Tag() ) ) {
 
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        QHash<QUrl, Variant> finalData;
 
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        if( data.contains(NAO::identifier()) )
 
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            finalData.insert( NAO::identifier(), data.value(NAO::identifier()) );
 
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        if( data.contains(NAO::prefLabel()) )
 
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            finalData.insert( NAO::prefLabel(), data.value(NAO::prefLabel()) );
 
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        return finalData;
 
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    }
 
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    QHash<QUrl, Variant> finalData( data );
 
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    //
 
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    // Remove all the meta-properties
 
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    //
 
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    finalData.remove( RDF::type() );
 
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    finalData.remove( NAO::lastModified() );
 
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    finalData.remove( NAO::created() );
 
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    finalData.remove( NAO::userVisible() );
 
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    //
 
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    // Remove all items, that are marked as hidden in kmetainformationrc
 
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    KConfig config("kmetainformationrc", KConfig::NoGlobals);
 
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    KConfigGroup settings = config.group("Show");
 
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    QHash<QUrl, Variant>::iterator it = finalData.begin();
 
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    while (it != finalData.end()) {
 
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        const QString uriString = it.key().toString();
 
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        if (!settings.readEntry(uriString, true) || !Types::Property(it.key()).userVisible()) {
 
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            it = finalData.erase(it);
 
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        } else {
 
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            ++it;
 
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        }
 
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    }
 
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    return finalData;
 
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}
 
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}
 
 
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