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Nepomuk

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facetmodel.h
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1/*
2 This file is part of the Nepomuk KDE project.
3 Copyright (C) 2010 Sebastian Trueg <trueg@kde.org>
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) version 3, or any
9 later version accepted by the membership of KDE e.V. (or its
10 successor approved by the membership of KDE e.V.), which shall
11 act as a proxy defined in Section 6 of version 3 of the license.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public
19 License along with this library. If not, see <http://www.gnu.org/licenses/>.
20*/
21
22#ifndef _NEPOMUK_QUERY_FACET_MODEL_H_
23#define _NEPOMUK_QUERY_FACET_MODEL_H_
24
25#include "query.h"
26#include "term.h"
27#include "nepomukutils_export.h"
28
29#include <QtCore/QAbstractItemModel>
30#include <QtCore/QList>
31
32namespace Nepomuk {
33 namespace Utils {
34 class Facet;
35
67 class NEPOMUKUTILS_EXPORT FacetModel : public QAbstractItemModel
68 {
69 Q_OBJECT
70
71 public:
75 FacetModel( QObject* parent = 0 );
76
80 ~FacetModel();
81
88 enum CustomRoles {
93 FacetRole = 235265643
94 };
95
99 int columnCount( const QModelIndex& parent = QModelIndex() ) const;
100
104 QVariant data( const QModelIndex& index, int role = Qt::DisplayRole ) const;
105
109 bool setData( const QModelIndex& index, const QVariant& value, int role );
110
114 bool hasChildren(const QModelIndex &parent) const;
115
119 QModelIndex parent( const QModelIndex& index ) const;
120
124 int rowCount( const QModelIndex& parent = QModelIndex() ) const;
125
129 QModelIndex index( int row, int column, const QModelIndex& parent = QModelIndex() ) const;
130
134 Qt::ItemFlags flags( const QModelIndex& index ) const;
135
139 QList<Facet*> facets() const;
140
146 Query::Term queryTerm() const;
147
148 public Q_SLOTS:
170 Nepomuk::Query::Query extractFacetsFromQuery( const Nepomuk::Query::Query& query );
171
186 void setClientQuery( const Nepomuk::Query::Query& query );
187
192 void addFacet( Nepomuk::Utils::Facet* facet );
193
198 void setFacets( const QList<Nepomuk::Utils::Facet*>& facets );
199
204 void clearSelection();
205
209 void clear();
210
211 Q_SIGNALS:
216 void queryTermChanged( const Nepomuk::Query::Term& term );
217
218 private:
219 class Private;
220 Private* const d;
221
222 Q_PRIVATE_SLOT( d, void _k_queryTermChanged() )
223 Q_PRIVATE_SLOT( d, void _k_facetSelectionChanged( Nepomuk::Utils::Facet* ) )
224 Q_PRIVATE_SLOT( d, void _k_facetLayoutChanged( Nepomuk::Utils::Facet* ) )
225 };
226 }
227}
228
229Q_DECLARE_METATYPE( Nepomuk::Utils::Facet* )
230
231#endif
Nepomuk::Query::Query
A Nepomuk desktop query.
Definition: query.h:77
Nepomuk::Query::Term
The base class for all term types.
Definition: term.h:65
Nepomuk::Utils::FacetModel
A FacetModel contains a list of facets that are provided in a tree structure.
Definition: facetmodel.h:68
Nepomuk::Utils::FacetModel::setClientQuery
void setClientQuery(const Nepomuk::Query::Query &query)
Can be used to set the full query the client is using (this includes facets created through this mode...
Nepomuk::Utils::FacetModel::setData
bool setData(const QModelIndex &index, const QVariant &value, int role)
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::flags
Qt::ItemFlags flags(const QModelIndex &index) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::clearSelection
void clearSelection()
Convenience method that clears the selection on all facets.
Nepomuk::Utils::FacetModel::setFacets
void setFacets(const QList< Nepomuk::Utils::Facet * > &facets)
Set facets as the list of facets used in this model.
Nepomuk::Utils::FacetModel::facets
QList< Facet * > facets() const
Nepomuk::Utils::FacetModel::queryTerm
Query::Term queryTerm() const
Construct a query term from the selected facets in this model.
Nepomuk::Utils::FacetModel::hasChildren
bool hasChildren(const QModelIndex &parent) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::~FacetModel
~FacetModel()
Destructor.
Nepomuk::Utils::FacetModel::queryTermChanged
void queryTermChanged(const Nepomuk::Query::Term &term)
Emitted whenever the facets change, i.e.
Nepomuk::Utils::FacetModel::FacetModel
FacetModel(QObject *parent=0)
Creates an empty facet model.
Nepomuk::Utils::FacetModel::clear
void clear()
Remove all facets from the model.
Nepomuk::Utils::FacetModel::index
QModelIndex index(int row, int column, const QModelIndex &parent=QModelIndex()) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::data
QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::parent
QModelIndex parent(const QModelIndex &index) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::columnCount
int columnCount(const QModelIndex &parent=QModelIndex()) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::FacetModel::CustomRoles
CustomRoles
Special roles FacetModel provides through data() in addition to the standard Qt roles.
Definition: facetmodel.h:88
Nepomuk::Utils::FacetModel::addFacet
void addFacet(Nepomuk::Utils::Facet *facet)
Add facet to the model.
Nepomuk::Utils::FacetModel::extractFacetsFromQuery
Nepomuk::Query::Query extractFacetsFromQuery(const Nepomuk::Query::Query &query)
Extract as many facets from a query as possible.
Nepomuk::Utils::FacetModel::rowCount
int rowCount(const QModelIndex &parent=QModelIndex()) const
Reimplemented to provide facet data to Qt's model/view framework.
Nepomuk::Utils::Facet
The base class for all facets used to create query filters.
Definition: facet.h:75
QAbstractItemModel
QObject
Nepomuk
nepomukutils_export.h
NEPOMUKUTILS_EXPORT
#define NEPOMUKUTILS_EXPORT
Definition: nepomukutils_export.h:36
query.h
term.h
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