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/*=========================================================================

  Program:   ParaView
  Module:    vtkSMRangeDomainTemplate.txx

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkSMRangeDomainTemplate_txx
#define vtkSMRangeDomainTemplate_txx

#include "vtkSMRangeDomainTemplate.h"

#include "vtkPVXMLElement.h"
#include "vtkSMUncheckedPropertyHelper.h"
#include "vtkSMVectorProperty.h"

#include <assert.h>

//-----------------------------------------------------------------------------
template <class T>
vtkSMRangeDomainTemplate<T>::vtkSMRangeDomainTemplate()
{
  this->DefaultMode = MID;
}

//-----------------------------------------------------------------------------
template <class T>
vtkSMRangeDomainTemplate<T>::~vtkSMRangeDomainTemplate()
{
}

//-----------------------------------------------------------------------------
template <class T>
int vtkSMRangeDomainTemplate<T>::IsInDomain(vtkSMProperty* property)
{
  if (this->IsOptional)
    {
    return 1;
    }

  if (property == NULL)
    {
    return 0;
    }

  vtkSMUncheckedPropertyHelper helper(property);
  for (unsigned int cc=0; cc < helper.GetNumberOfElements(); cc++)
    {
    if (!this->IsInDomain(cc, helper.GetAs<T>(cc)))
      {
      return 0;
      }
    }
  return 1;
}

//-----------------------------------------------------------------------------
template <class T>
bool vtkSMRangeDomainTemplate<T>::IsInDomain(unsigned int idx, T val)
{
  if (idx >= static_cast<unsigned int>(this->Entries.size()))
    {
    return 1;
    }
  if (this->Entries[idx].Valid[0] && val < this->Entries[idx].Value[0])
    {
    return 0;
    }
  if (this->Entries[idx].Valid[1] && val < this->Entries[idx].Value[1])
    {
    return 0;
    }
  return 1;
}

//-----------------------------------------------------------------------------
template <class T>
T vtkSMRangeDomainTemplate<T>::GetMinimum(unsigned int idx, int& exists)
{
  exists = 0;
  if (idx < static_cast<unsigned int>(this->Entries.size()) &&
    this->Entries[idx].Valid[0])
    {
    exists = 1;
    return this->Entries[idx].Value[0];
    }
  return 0;
}

//-----------------------------------------------------------------------------
template <class T>
T vtkSMRangeDomainTemplate<T>::GetMaximum(unsigned int idx, int& exists)
{
  exists = 0;
  if (idx < static_cast<unsigned int>(this->Entries.size()) &&
    this->Entries[idx].Valid[1])
    {
    exists = 1;
    return this->Entries[idx].Value[1];
    }
  return 0;
}

//-----------------------------------------------------------------------------
template <class T>
bool vtkSMRangeDomainTemplate<T>::GetMinimumExists(unsigned int idx)
{
  return (idx < static_cast<unsigned int>(this->Entries.size())?
    this->Entries[idx].Valid[0] : false);
}

//-----------------------------------------------------------------------------
template <class T>
bool vtkSMRangeDomainTemplate<T>::GetMaximumExists(unsigned int idx)
{
  return (idx < static_cast<unsigned int>(this->Entries.size())?
    this->Entries[idx].Valid[1] : false);
}

//-----------------------------------------------------------------------------
template <class T>
unsigned int vtkSMRangeDomainTemplate<T>::GetNumberOfEntries()
{
  return static_cast<unsigned int>(this->Entries.size());
}

//-----------------------------------------------------------------------------
template <class T>
void vtkSMRangeDomainTemplate<T>::Update(vtkSMProperty* property)
{
  if (property)
    {
    vtkSMUncheckedPropertyHelper helper(property);
    std::vector<vtkEntry> new_entries;

    for (unsigned int cc=0; cc < helper.GetNumberOfElements(); cc++)
      {
      unsigned int entry_index = cc/2;
      // ensure new_entries is of the size
      if (entry_index >= static_cast<unsigned int>(new_entries.size()))
        {
        new_entries.resize(entry_index + 1);
        }

      unsigned int min_max_index = cc%2;
      new_entries[entry_index].Valid[min_max_index] = true;
      new_entries[entry_index].Value[min_max_index] = helper.GetAs<T>(cc);
      }

    this->SetEntries(new_entries);
    }
}

//-----------------------------------------------------------------------------
template <class T>
void vtkSMRangeDomainTemplate<T>::SetAnimationValue(
  vtkSMProperty *property, int idx, double value)
{
  if (property)
    {
    vtkSMPropertyHelper(property).Set(idx, value);
    }
}

//-----------------------------------------------------------------------------
template <class T>
int vtkSMRangeDomainTemplate<T>::ReadXMLAttributes(
  vtkSMProperty* prop, vtkPVXMLElement* element)
{
  if (!this->Superclass::ReadXMLAttributes(prop, element))
    {
    return 0;
    }

  std::vector<vtkEntry> new_entries;
  const int MAX_NUM = 128;
  T values[MAX_NUM];
  int numRead = element->GetVectorAttribute("min", MAX_NUM, values);
  if (numRead > 0)
    {
    if (numRead > static_cast<int>(new_entries.size()))
      {
      new_entries.resize(numRead);
      }
    for (int i=0; i<numRead; i++)
      {
      new_entries[i].Valid[0] = true;
      new_entries[i].Value[0] = values[i];
      }
    }

  numRead = element->GetVectorAttribute("max", MAX_NUM, values);
  if (numRead > 0)
    {
    if (numRead > static_cast<int>(new_entries.size()))
      {
      new_entries.resize(numRead);
      }
    for (int i=0; i<numRead; i++)
      {
      new_entries[i].Valid[1] = true;
      new_entries[i].Value[1] = values[i];
      }
    }

  const char* default_mode = element->GetAttribute("default_mode");
  if (default_mode)
    {
    if (strcmp(default_mode, "min") == 0)
      {
      this->DefaultMode = MIN;
      }
    else if (strcmp(default_mode, "max") == 0)
      {
      this->DefaultMode = MAX;
      }
    if (strcmp(default_mode, "mid") == 0)
      {
      this->DefaultMode = MID;
      }
    }

  this->SetEntries(new_entries);
  return 1;
}

//-----------------------------------------------------------------------------
template <class T>
int vtkSMRangeDomainTemplate<T>::SetDefaultValues(
  vtkSMProperty* property, bool use_unchecked_values)
{
  vtkSMVectorProperty* vp = vtkSMVectorProperty::SafeDownCast(property);
  if (!vp)
    {
    vtkErrorMacro("Property must be a vtkSMVectorProperty subclass.");
    return 0;
    }

  if (this->GetNumberOfRequiredProperties() == 0)
    {
    // no required properties, the domain doesn't depend on run-time values.
    // Typically implies that the default values set for the property are what
    // the user intended.
    return 0;
    }

  vtkSMPropertyHelper helper(vp);
  helper.SetUseUnchecked(use_unchecked_values);
  if (vp->GetRepeatCommand())
    {
    // this is a resizable property, set just 1 value in it. This happens in
    // cases like ContourValues for ContourFilter.
    T value;
    if (this->GetComputedDefaultValue(0, value))
      {
      helper.Set(&value, 1);
      return 1;
      }
    }
  else if (helper.GetNumberOfElements() == this->GetNumberOfEntries()*2)
    {
    // the property is expecting a range.
    std::vector<T> values = helper.GetArray<T>();
    for (unsigned int cc=0; cc < this->GetNumberOfEntries(); cc++)
      {
      int minExists, maxExists;
      T value[2];
      value[0] = this->GetMinimum(cc, minExists);
      value[1] = this->GetMaximum(cc, maxExists);
      if (minExists && maxExists)
        {
        values[2*cc] = value[0];
        values[2*cc+1] = value[1];
        }
      // else leave values unchanged.
      }
    if (values.size() > 0)
      {
      helper.Set(&values[0], static_cast<unsigned int>(values.size()));
      return 1;
      }
    }
  else
    {
    std::vector<T> values = helper.GetArray<T>();
    for (unsigned int cc=0; cc < helper.GetNumberOfElements(); cc++)
      {
      T value;
      if (this->GetComputedDefaultValue(cc, value))
        {
        values[cc] = value;
        }
      }
    helper.Set(&values[0], static_cast<unsigned int>(values.size()));
    return 1;
    }

  return this->Superclass::SetDefaultValues(property, use_unchecked_values);
}

//-----------------------------------------------------------------------------
template <class T>
bool vtkSMRangeDomainTemplate<T>::GetComputedDefaultValue(unsigned int index, T& value)
{
  int minExists, maxExists;
  T min, max;
  min = this->GetMinimum(index, minExists);
  max = this->GetMaximum(index, maxExists);

  if ( (minExists && !maxExists) || this->DefaultMode == MIN)
    {
    value = min;
    return minExists != 0;
    }
  else if ( (maxExists && !minExists) || this->DefaultMode == MAX)
    {
    value = max;
    return maxExists != 0;
    }
  else if (minExists && maxExists && this->DefaultMode == MID)
    {
    value = (min + max) / 2;
    return true;
    }

  return false;
}

//-----------------------------------------------------------------------------
template <class T>
int vtkSMRangeDomainTemplate<T>::GetDefaultMode()
{
  return this->DefaultMode;
}

//-----------------------------------------------------------------------------
template <class T>
void vtkSMRangeDomainTemplate<T>::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os, indent);
  os << indent << "DefaultMode: " << this->GetDefaultMode() << endl;
}
#endif