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95 lines
4.3 KiB
95 lines
4.3 KiB
/***************************************************************************
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Copyright (C) 2004 by Scott Wheeler <wheeler@kde.org>
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef FILEHANDLEPROPERTIES_H
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#define FILEHANDLEPROPERTIES_H
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#include <tqmap.h>
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/*
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* These ugly macros make possible a property registration system that makes it
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* easy to add properties to the FileHandle that can be accessed via the DCOP
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* interface.
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*
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* Properties should actually be added to the filehandle.cpp file. This file
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* is just here to separate out some of the macro-related ugliness.
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*/
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#define AddProperty(name, method) \
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namespace FileHandleProperties \
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{ \
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struct name##Property : public Property \
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{ \
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virtual TQString value(const FileHandle &f) const \
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{ \
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return f.method; \
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} \
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static const int dummy; \
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}; \
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static name##Property name##Instance; \
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const int name##Property::dummy = addToPropertyMap(#name, &name##Instance); \
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}
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#define AddNumberProperty(name, method) \
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namespace FileHandleProperties \
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{ \
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struct name##Property : public Property \
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{ \
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virtual TQString value(const FileHandle &f) const \
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{ \
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return TQString::number(f.method); \
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} \
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static const int dummy; \
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}; \
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static name##Property name##Instance; \
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const int name##Property::dummy = addToPropertyMap(#name, &name##Instance); \
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}
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namespace FileHandleProperties
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{
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struct Property
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{
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virtual TQString value(const FileHandle &) const
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{
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return TQString();
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}
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};
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static TQMap<TQCString, const Property *> propertyMap;
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static int addToPropertyMap(const TQCString &name, Property *property)
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{
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propertyMap[name] = property;
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return 0;
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}
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static TQString property(const FileHandle &file, const TQCString &key)
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{
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return propertyMap.contains(key) ? propertyMap[key]->value(file) : TQString();
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}
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static TQStringList properties()
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{
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static TQStringList l;
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if(l.isEmpty()) {
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TQMap<TQCString, const Property *>::ConstIterator it = propertyMap.begin();
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for(; it != propertyMap.end(); ++it)
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l.append(TQString(it.key()));
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}
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return l;
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}
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}
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#endif
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