/usr/include/CEGUI/CEGUIProperty.h is in libcegui-mk2-dev 0.7.5-8.
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filename: CEGUIProperty.h
created: 21/2/2004
author: Paul D Turner
purpose: Defines the Property class which forms part of a
PropertySet
*************************************************************************/
/***************************************************************************
* Copyright (C) 2004 - 2006 Paul D Turner & The CEGUI Development Team
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
***************************************************************************/
#ifndef _CEGUIProperty_h_
#define _CEGUIProperty_h_
#include "CEGUIBase.h"
#include "CEGUIString.h"
#include "CEGUIXMLSerializer.h"
// Start of CEGUI namespace section
namespace CEGUI
{
/*!
\brief
Dummy base class to ensure correct casting of receivers.
*/
class CEGUIEXPORT PropertyReceiver
{
public:
PropertyReceiver() {}
virtual ~PropertyReceiver() {}
};
/*!
\brief
An abstract class that defines the interface to access object properties by name.
Property objects allow (via a PropertySet) access to certain properties of objects
by using simple get/set functions and the name of the property to be accessed.
*/
class CEGUIEXPORT Property
{
public:
/*!
\brief
Creates a new Property object.
\param name
String containing the name of the new Property.
\param help
String containing a description of the Property and it's usage.
\param defaultValue
String holding the textual representation of the default value for this Property
\param writesXML
Specifies whether the writeXMLToStream method should do anything for this Property. This
enables selectivity in what properties within a PropertySet will get output as XML.
*/
Property(const String& name, const String& help, const String& defaultValue = "", bool writesXML = true) :
d_name(name),
d_help(help),
d_default(defaultValue),
d_writeXML(writesXML)
{
}
/*!
\brief
Destructor for Property objects
*/
virtual ~Property(void) {}
/*!
\brief
Return a String that describes the purpose and usage of this Property.
\return
String that contains the help text
*/
const String& getHelp(void) const {return d_help;}
/*!
\brief
Return a the name of this Property
\return
String containing the name of the Property
*/
const String& getName(void) const {return d_name;}
/*!
\brief
Return the current value of the Property as a String
\param receiver
Pointer to the target object.
\return
String object containing a textual representation of the current value of the Property
*/
virtual String get(const PropertyReceiver* receiver) const = 0;
/*!
\brief
Sets the value of the property
\param receiver
Pointer to the target object.
\param value
A String object that contains a textual representation of the new value to assign to the Property.
\return
Nothing.
\exception InvalidRequestException Thrown when the Property was unable to interpret the content of \a value.
*/
virtual void set(PropertyReceiver* receiver, const String& value) = 0;
/*!
\brief
Returns whether the property is at it's default value.
\param receiver
Pointer to the target object.
\return
- true if the property has it's default value.
- false if the property has been modified from it's default value.
*/
virtual bool isDefault(const PropertyReceiver* receiver) const;
/*!
\brief
Returns the default value of the Property as a String.
\param receiver
Pointer to the target object.
\return
String object containing a textual representation of the default value for this property.
*/
virtual String getDefault(const PropertyReceiver* receiver) const;
/*!
\brief
Writes out an XML representation of this class to the given stream.
\note
This would normally have been implemented via XMLGenerator base class, but in this
case we require the target PropertyReceiver in order to obtain the property value.
*/
virtual void writeXMLToStream(const PropertyReceiver* receiver, XMLSerializer& xml_stream) const;
protected:
String d_name; //!< String that stores the Property name.
String d_help; //!< String that stores the Property help text.
String d_default; //!< String that stores the Property default value string.
bool d_writeXML; //!< Specifies whether writeXMLToStream should do anything for this property.
};
} // End of CEGUI namespace section
#endif // end of guard _CEGUIProperty_h_
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