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/* This file is part of the KDE libraries
Copyright (C) 1997 Mark Donohoe (donohoe@kde.org)
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 _KROOTPROP_H
#define _KROOTPROP_H
typedef unsigned long Atom;
#include <tqcolor.h>
#include <tqfont.h>
#include <tqmap.h>
#include <tqstringlist.h>
#include <kdelibs_export.h>
class KRootPropPrivate;
/**
* Access KDE desktop resources stored on the root window.
*
* A companion to the KConfig class.
*
* The KRootProp class is used for reading and writing configuration entries
* to properties on the root window.
*
* All configuration entries are of the form "key=value".
*
* @see KConfig::KConfig
* @author Mark Donohoe (donohe@kde.org)
*/
class KDECORE_EXPORT KRootProp
{
private:
Atom atom;
TQMap<TQString,TQString> propDict;
TQString property_;
bool dirty;
KRootPropPrivate *d;
public:
/**
* Constructs a KRootProp object for the property @p rProp.
* @param rProp the property that will be searched, null to
* do nothing
* @see setProp()
**/
KRootProp( const TQString& rProp = TQString::null );
/**
* Destructs the KRootProp object.
*
* Writes back any dirty configuration entries.
**/
~KRootProp();
/**
* Sets the property in which keys will be searched.
* @param rProp the property that will be searched
**/
void setProp(const TQString& rProp=TQString());
/**
* Returns the name of the property under which keys are searched.
* @return the property that will be searched
**/
TQString prop() const;
/**
* Destroys the property completely.
*
* I.e. all entries will be cleared
* and the property will be removed from the root window.
**/
void destroy();
/**
* Reads the value of an entry specified by @p rKey in the current property.
*
* @param rKey The key to search for.
* @param pDefault A default value returned if the key was not found.
* @return The value for this key or the default if no value
* was found.
**/
TQString readEntry( const TQString& rKey,
const TQString& pDefault = TQString::null ) const ;
/**
* Reads a numerical value.
*
* Reads the value of an entry specified by @p rKey in the current property
* and interprets it numerically.
*
* @param rKey The key to search for.
* @param nDefault A default value returned if the key was not found.
* @return The value for this key or the default if no value was found.
*/
int readNumEntry( const TQString& rKey, int nDefault = 0 ) const;
/**
* Reads a TQFont value.
*
* Reads the value of an entry specified by @p rKey in the current property
* and interpret it as a font object.
*
* @param rKey The key to search for.
* @param pDefault A default value returned if the key was not found.
* @return The value for this key or a default font if no value was found.
*/
TQFont readFontEntry( const TQString& rKey,
const TQFont* pDefault = 0 ) const;
/**
* Reads a TQColor.
*
* Reads the value of an entry specified by @p rKey in the current property
* and interprets it as a color.
*
* @param rKey The key to search for.
* @param pDefault A default value returned if the key was not found.
* @return The value for this key or a default color if no value
* was found.
*/
TQColor readColorEntry( const TQString& rKey,
const TQColor* pDefault = 0 ) const;
/**
* Writes a (key/value) pair.
*
* This is stored to the current property when destroying the
* config object or when calling sync().
*
* @param rKey The key to write.
* @param rValue The value to write.
* @return The old value for this key. If this key did not exist,
* a null string is returned.
*
**/
TQString writeEntry( const TQString& rKey, const TQString& rValue );
/**
* Writes the (key/value) pair.
* Same as above, but writes a numerical value.
* @param rKey The key to write.
* @param nValue The value to write.
* @return The old value for this key. If this key did not
* exist, a null string is returned.
**/
TQString writeEntry( const TQString& rKey, int nValue );
/**
* Writes the (key/value) pair.
* Same as above, but writes a font.
* @param rKey The key to write.
* @param rFont The font to write.
* @return The old value for this key. If this key did not
* exist, a null string is returned.
**/
TQString writeEntry( const TQString& rKey, const TQFont& rFont );
/**
* Writes the (key/value) pair.
* Same as above, but writes a color.
* @param rKey The key to write.
* @param rColor The color to write.
* @return The old value for this key. If this key did not
* exist, a null string is returned.
**/
TQString writeEntry( const TQString& rKey, const TQColor& rColor );
/**
* Removes an entry.
* @param rKey The key to remove.
* @return The old value for this key. If this key did not
* exist, a null string is returned.
**/
TQString removeEntry(const TQString& rKey);
/**
* Returns a list of all keys.
* @return A TQStringList containing all the keys.
**/
TQStringList listEntries() const;
/**
* Flushes the entry cache.
* Writes back dirty configuration entries to the current property,
* This is called automatically from the destructor.
**/
void sync();
};
#endif
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