Validator.h

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
 *
 * This library is open source and may be redistributed and/or modified under
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * 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
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSGUI_VALIDATOR
#define OSGUI_VALIDATOR

#include <osg/Object>
#include <osgUI/Export>

namespace osgUI
{

class OSGUI_EXPORT Validator : public osg::Object
{
public:
    Validator();
    Validator(const Validator& validator, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
    META_Object(osgUI, Validator);

    enum State
    {
        INVALID,
        INTERMEDIATE,
        ACCEPTABLE
    };

    virtual State validate(std::string& /*str*/, int& cursorpos) const;

    virtual State validateImplementation(std::string& /*str*/, int& /*cursorpos*/) const;

    virtual void fixup(std::string& /*str*/) const;

    virtual void fixupImplementation(std::string& /*str*/) const;

protected:
    virtual ~Validator() {}
};

class OSGUI_EXPORT IntValidator : public Validator
{
public:
    IntValidator();
    IntValidator(const IntValidator& widget, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
    META_Object(osgUI, IntValidator);

    void setBottom(int bottom) { _bottom = bottom; }
    int getBottom() const { return _bottom; }

    void setTop(int top) { _top = top; }
    int getTop() const { return _top; }

    virtual State validateImplementation(std::string& str, int& cursorpos) const;
    virtual void fixupImplementation(std::string& str) const;

protected:
    virtual ~IntValidator() {}
    int _bottom;
    int _top;
};

class OSGUI_EXPORT DoubleValidator : public Validator
{
public:
    DoubleValidator();
    DoubleValidator(const DoubleValidator& widget, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
    META_Object(osgUI, DoubleValidator);

    void setDecimals(int numDecimals) { _decimals = numDecimals; }
    int getDecimals() const { return _decimals; }

    void setBottom(double bottom) { _bottom = bottom; }
    double getBottom() const { return _bottom; }

    void setTop(double top) { _top = top; }
    double getTop() const { return _top; }

    virtual State validateImplementation(std::string& str, int& cursorpos) const;
    virtual void fixupImplementation(std::string& str) const;

protected:
    virtual ~DoubleValidator() {}
    int         _decimals;
    double      _bottom;
    double      _top;
};

}

#endif