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JUCE/extras/Introjucer/Source/Utility/jucer_ValueSourceHelpers.h

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C++

/*
==============================================================================
This file is part of the JUCE library - "Jules' Utility Class Extensions"
Copyright 2004-11 by Raw Material Software Ltd.
------------------------------------------------------------------------------
JUCE can be redistributed and/or modified under the terms of the GNU General
Public License (Version 2), as published by the Free Software Foundation.
A copy of the license is included in the JUCE distribution, or can be found
online at www.gnu.org/licenses.
JUCE 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 General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.rawmaterialsoftware.com/juce for more information.
==============================================================================
*/
#ifndef __JUCER_VALUESOURCEHELPERS_JUCEHEADER__
#define __JUCER_VALUESOURCEHELPERS_JUCEHEADER__
//==============================================================================
/**
*/
template <typename Type>
class NumericValueSource : public ValueSourceFilter
{
public:
NumericValueSource (const Value& source) : ValueSourceFilter (source) {}
var getValue() const
{
return (Type) sourceValue.getValue();
}
void setValue (const var& newValue)
{
const Type newVal = static_cast <Type> (newValue);
if (newVal != static_cast <Type> (getValue())) // this test is important, because if a property is missing, it won't
sourceValue = newVal; // create it (causing an unwanted undo action) when a control sets it to 0
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NumericValueSource);
};
#endif // __JUCER_VALUESOURCEHELPERS_JUCEHEADER__