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diff --git a/include/wx_unit_binder.h b/include/wx_unit_binder.h
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+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2014-2015 CERN
+ * Author: Maciej Suminski <maciej.suminski@cern.ch>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#ifndef __WX_UNIT_BINDER_H_
+#define __WX_UNIT_BINDER_H_
+
+#include <common.h>
+#include <wx/spinbutt.h>
+
+class wxTextCtrl;
+class wxSpinButton;
+class wxStaticText;
+
+class WX_UNIT_BINDER
+{
+public:
+
+    /**
+     * Constructor.
+     * @param aParent is the parent window.
+     * @param aTextInput is the text input widget used to edit the given value.
+     * @param aUnitLabel is the units label displayed next to the text field.
+     * @param aSpinButton is an optional spin button (for adjusting the input value)
+     */
+    WX_UNIT_BINDER( wxWindow* aParent, wxTextCtrl* aTextInput, wxStaticText* aUnitLabel, wxSpinButton* aSpinButton = NULL );
+
+    virtual ~WX_UNIT_BINDER();
+
+    /**
+     * Function SetValue
+     * Sets new value (in Internal Units) for the text field, taking care of units conversion.
+     * @param aValue is the new value.
+     */
+    virtual void SetValue( int aValue );
+
+    /**
+     * Function GetValue
+     * Returns the current value in Internal Units.
+     */
+    virtual int GetValue() const;
+
+    /**
+     * Function Valid
+     * Returns true if the text control contains a real number.
+     */
+    bool Valid() const;
+
+    /**
+     * Function Enable
+     * Enables/diasables the binded widgets
+     */
+    void Enable( bool aEnable );
+
+protected:
+
+    void onTextChanged( wxEvent& aEvent );
+
+    ///> Text input control.
+    wxTextCtrl*   m_textCtrl;
+
+    ///> Label showing currently used units.
+    wxStaticText* m_unitLabel;
+
+    ///> Currently used units.
+    EDA_UNITS_T   m_units;
+
+    ///> Step size (added/subtracted difference if spin buttons are used).
+    int m_step;
+    int m_min;
+    int m_max;
+
+    ///> Default value (or non-specified)
+    static const wxString DEFAULT_VALUE;
+};
+
+#endif /* __WX_UNIT_BINDER_H_ */