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/* -*- C++ -*-
This file declares the Weaver Extensions basics.
$ Author: Mirko Boehm $
$ Copyright: (C) 2004, Mirko Boehm $
$ Contact: [email protected]
http://www.kde.org
http://www.hackerbuero.org $
$ License: LGPL with the following explicit clarification:
This code may be linked against any version of the Qt toolkit
from Troll Tech, Norway. $
*/
#ifndef WEAVEREXTENSIONS_H
#define WEAVEREXTENSIONS_H
#include <tqobject.h>
namespace KPIM {
namespace ThreadWeaver {
class Weaver;
class Thread;
/** A WeaverExtension can be attached to an existing Weaver object and
will then receive signals on actions the Weaver takes, like starting
to process a specific job, assigning a job to a thread or suspending a
thread. It can be used to monitor the state of a program, but also,
for example, to provide visualization of the Weaver's work load in GUI
programs. Derive from it to actually create an extension. */
class WeaverExtension : public QObject
{
Q_OBJECT
public:
WeaverExtension ( TQObject *parent = 0, const char *name = 0);
/** Attach() is a convenience method that will connect all our
slots to signals emitted by the weaver. It is also possible to
avoid attach() and only connect necessary signals. */
void attach (Weaver *);
virtual ~WeaverExtension() = 0;
public slots:
// these methods are implemented, but do nothing in the default configuration
// a thread is created:
virtual void threadCreated (Thread *);
// a thread is destroyed:
virtual void threadDestroyed (Thread *);
// the thread is processing a job
virtual void threadBusy (Thread *);
// the thread is suspended and will be waked when jobs become
// available
virtual void threadSuspended (Thread *);
};
} // namespace ThreadWeaver
}
#endif // WEAVEREXTENSIONS_H
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