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83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
/* This file is part of KDevelop
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Copyright 2009 Andreas Pakulat <apaku@gmx.de>
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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 Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef KDEVPLATFORM_ISELECTIONCONTROLLER_H
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#define KDEVPLATFORM_ISELECTIONCONTROLLER_H
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#include <QtCore/QObject>
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#include "interfacesexport.h"
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namespace KDevelop
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{
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class Context;
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/**
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* The main controller for selection updates in the GUI.
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*
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* This controller can be used by selection consumers and selection providers.
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*
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* A selection provider (for example a treeview for the projects) should
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* call updateSelection() with an appropriate context filled with the details
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* of the selection
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*
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* A selection consumer who is interested in notifications when the selection has
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* been changed, should connect to the selectionChanged signal. The consumer should
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* retrieve all necessary information that it might need to do something with the
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* selection and store those. Storing the whole Context* might be dangerous as it
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* will be deleted on the next selection change.
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*
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*/
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class KDEVPLATFORMINTERFACES_EXPORT ISelectionController : public QObject
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{
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Q_OBJECT
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public:
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///Constructor.
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ISelectionController(QObject *parent);
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~ISelectionController();
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/**
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* Provides the current selection, note that this might be 0
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*/
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virtual Context* currentSelection() = 0;
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public Q_SLOTS:
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/**
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* updates the current selection.
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* The SelectionController takes ownership of the given context and
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* deletes it when the selection is updated the next time.
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* @param context the new selection
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*/
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virtual void updateSelection( Context* context ) = 0;
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Q_SIGNALS:
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/**
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* Notify that the current selection changed.
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* @note The context might be deleted behind the back (when a new selection
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* is set) of the receivers of this signal, so make sure to copy all the
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* needed information.
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*/
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void selectionChanged( KDevelop::Context* );
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};
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}
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#endif // KDEVPLATFORM_ISELECTIONCONTROLLER_H
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