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/* This file is part of the KDE project
Copyright (C) 1999 Simon Hausmann <[email protected]>
(C) 1999 David Faure <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __kparts_factory_h__
#define __kparts_factory_h__
#include <klibloader.h>
class QWidget;
namespace KParts
{
class Part;
/**
* A generic factory object to create a Part.
*
* Factory is an abstract class. Reimplement the
* createPartObject() method to give it functionality.
*
* @see KLibFactory.
*/
class KPARTS_EXPORT Factory : public KLibFactory
{
Q_OBJECT
public:
Factory( QObject *parent = 0, const char *name = 0 );
virtual ~Factory();
/**
* Creates a part.
*
* The QStringList can be used to pass additional arguments to the part.
* If the part needs additional arguments, it should take them as
* name="value" pairs. This is the way additional arguments will get passed
* to the part from eg. khtml. You can for example embed the part into HTML
* by using the following code:
* \code
* <object type="my_mimetype" data="url_to_my_data">
* <param name="name1" value="value1">
* <param name="name2" value="value2">
* </object>
* \endcode
* This could result in a call to
* \code
* createPart( parentWidget, name, parentObject, parentName, "KParts::Part",
* QStringList("name1="value1"", "name2="value2") );
* \endcode
*
* @returns the newly created part.
*
* createPart() automatically emits a signal KLibFactory::objectCreated to tell
* the library about its newly created object. This is very
* important for reference counting, and allows unloading the
* library automatically once all its objects have been destroyed.
*/
Part *createPart( QWidget *parentWidget = 0, const char *widgetName = 0, QObject *parent = 0, const char *name = 0, const char *classname = "KParts::Part", const QStringList &args = QStringList() );
/**
* If you have a part contained in a shared library you might want to query
* for meta-information like the about-data, or the KInstance in general.
* If the part is exported using KParts::GenericFactory then this method will
* return the instance that belongs to the part without the need to instantiate
* the part component.
*/
const KInstance *partInstance();
/**
* A convenience method for partInstance() that takes care of retrieving
* the factory for a given library name and calling partInstance() on it.
*
* @param libraryName name of the library to query the instance from
*/
static const KInstance *partInstanceFromLibrary( const QCString &libraryName );
protected:
/**
* Reimplement this method in your implementation to create the Part.
*
* The QStringList can be used to pass additional arguments to the part.
* If the part needs additional arguments, it should take them as
* name="value" pairs. This is the way additional arguments will get passed
* to the part from eg. khtml. You can for example emebed the part into HTML
* by using the following code:
* \code
* <object type="my_mimetype" data="url_to_my_data">
* <param name="name1" value="value1">
* <param name="name2" value="value2">
* </object>
* \endcode
* This could result in a call to
* \code
* createPart( parentWidget, name, parentObject, parentName, "Kparts::Part",
* QStringList("name1="value1"", "name2="value2") );
* \endcode
*
* @returns the newly created part.
*/
virtual Part *createPartObject( QWidget *parentWidget = 0, const char *widgetName = 0, QObject *parent = 0, const char *name = 0, const char *classname = "KParts::Part", const QStringList &args = QStringList() ) = 0;
/**
* Reimplemented from KLibFactory. Calls createPart()
*/
virtual QObject *createObject( QObject *parent = 0, const char *name = 0, const char *classname = "QObject", const QStringList &args = QStringList() );
/** This 'enum' along with the structure below is NOT part of the public API.
* It's going to disappear in KDE 4.0 and is likely to change inbetween.
*
* @internal
*/
enum { VIRTUAL_QUERY_INSTANCE_PARAMS = 0x10 };
struct QueryInstanceParams
{
const KInstance *instance;
};
};
}
/*
* vim: et sw=4
*/
#endif
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