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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OBJECTDUMP_H
#define OBJECTDUMP_H
#include <QObject>
#include <QList>
#include <QByteArray>
#include <QScopedPointer>
QT_BEGIN_NAMESPACE
namespace ObjectDump
{
/**
* Abstract base for annotator classes invoked by QVisitor.
*/
class QAnnotator : public QObject
{
Q_OBJECT
public:
virtual ~QAnnotator();
virtual QList<QByteArray> annotation(const QObject& object) = 0;
};
/**
* Annotator which replicates QObject::dumpObjectTree functionality.
*/
class QAnnotatorBasic : public QAnnotator
{
Q_OBJECT
public:
QList<QByteArray> annotation(const QObject& object);
};
/**
* Annotator which returns widget information.
*/
class QAnnotatorWidget : public QAnnotator
{
Q_OBJECT
public:
QList<QByteArray> annotation(const QObject& object);
};
class QDumperPrivate;
/**
* Class used to dump information about individual QObjects.
*/
class QDumper : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QDumper)
public:
QDumper();
~QDumper();
/**
* Specify a prefix, to be printed on each line of output.
*/
void setPrefix(const QString& prefix);
/**
* Takes ownership of annotator.
*/
void addAnnotator(QAnnotator* annotator);
/**
* Invoke each annotator on the object and write to debug output.
*/
void dumpObject(const QObject& object);
private:
QScopedPointer<QDumperPrivate> d_ptr;
};
class QVisitorPrivate;
/**
* Visitor class which dumps information about nodes in the object tree.
*/
class QVisitor : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QVisitor)
public:
QVisitor();
~QVisitor();
/**
* Specify a prefix, to be printed on each line of output.
*/
void setPrefix(const QString& prefix);
/**
* Set number of spaces by which each level of the tree is indented.
*/
void setIndent(unsigned indent);
/**
* Called by the visitor algorithm before starting the visit.
*/
void visitPrepare();
/**
* Called by the visitor algorithm as each node is visited.
*/
void visitNode(const QObject& object);
/**
* Called by the visitor algorithm when the visit is complete.
*/
void visitComplete();
/**
* Takes ownership of annotator.
*/
void addAnnotator(QAnnotator* annotator);
private:
QScopedPointer<QVisitorPrivate> d_ptr;
};
//-----------------------------------------------------------------------------
// Utility functions
//-----------------------------------------------------------------------------
void addDefaultAnnotators(QDumper& dumper);
void addDefaultAnnotators(QVisitor& visitor);
void dumpTreeFromRoot(const QObject& root, QVisitor& visitor);
void dumpTreeFromLeaf(const QObject& leaf, QVisitor& visitor);
void dumpAncestors(const QObject& leaf, QVisitor& visitor);
} // namespace ObjectDump
QT_END_NAMESPACE
#endif
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