--- /dev/null
+// Copyright (C) 2013 CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License.
+//
+// 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 GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+// Author : Frederic Pons (OpenCascade)
+
+#ifndef __XAO_STEP_HXX__
+#define __XAO_STEP_HXX__
+
+#include "XAO_XaoUtils.hxx"
+
+namespace XAO
+{
+ /**
+ * @class Step
+ * Base class for steps.
+ */
+ class Step
+ {
+ protected:
+ /** Default constructor. */
+ Step() {}
+
+ public:
+ /**
+ * Destructor.
+ */
+ virtual ~Step() {}
+
+ /**
+ * Gets the type of the step.
+ * @return
+ */
+ virtual const XAO::Type getType() = 0;
+
+ /**
+ * Gets the step index.
+ * @return the index of the step.
+ */
+ const int getStep() { return m_step; }
+
+ /**
+ * Sets the number of the step.
+ * @param step the index to set.
+ */
+ void setStep(const int& step) { m_step = step; }
+
+ /**
+ * Gets the stamp of the index.
+ * @return the stamp of the index.
+ */
+ const int getStamp() { return m_stamp; }
+
+ /**
+ * Sets the stamp of the index.
+ * @param stamp the stamp to set.
+ */
+ void setStamp(const int& stamp) { m_stamp = stamp; }
+
+ /**
+ * Gets the number of components of the step.
+ * @return the number of components.
+ */
+ const int countComponents() { return m_nbComponents; }
+
+ /**
+ * Gets the number of elements for the step.
+ * @return the number of elements.
+ */
+ const int countElements() { return m_nbElements; }
+
+ /**
+ * Gets the number of values for the step.
+ * @return the number of values.
+ */
+ const int countValues() { return m_nbElements * m_nbComponents; }
+
+ /**
+ * Gets a value as a string.
+ * @param element the index of the element.
+ * @param component the index of the component.
+ * @return the value as a string.
+ */
+ virtual const std::string getStringValue(const int& element, const int& component) = 0;
+
+ /**
+ * Sets a value as a string
+ * @param element the index of the element.
+ * @param component the index of the component.
+ * @param value the string value.
+ * @throw XAO_Exception if the value is not valid.
+ */
+ virtual void setStringValue(const int& element, const int& component, const std::string& value) = 0;
+
+ protected:
+ /**
+ * Checks that given element index is in the range of element indexes.
+ * @param element the index to check.
+ */
+ void checkElementIndex(const int& element) throw (XAO_Exception);
+ /**
+ * Checks that given component index is in the range of component indexes.
+ * @param component the index to check.
+ */
+ void checkComponentIndex(const int& component)throw (XAO_Exception);
+
+ /**
+ * Checks that the given number of elements is correct.
+ * @param nbElements the number of elements to check.
+ */
+ void checkNbElements(const int& nbElements)throw (XAO_Exception);
+
+ /**
+ * Checks that the given number of components is correct.
+ * @param nbComponents the number of components to check.
+ */
+ void checkNbComponents(const int& nbComponents)throw (XAO_Exception);
+
+ /**
+ * checks that the given number of values is correct.
+ * @param nbValues the number of values to check.
+ */
+ void checkNbValues(const int& nbValues)throw (XAO_Exception);
+
+ protected:
+ /** the index of the step. */
+ int m_step;
+ /** The stamp of the step. */
+ int m_stamp;
+ /** The number of components. */
+ int m_nbComponents;
+ /** The number of elements. */
+ int m_nbElements;
+ };
+}
+
+
+#endif /* __XAO_STEP_HXX__ */
