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/*===========================================================================*\
*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
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\*===========================================================================*/

//== INCLUDES =================================================================
#include <QGraphicsItem>
#include <QGraphicsSceneMouseEvent>

#include "../parser/element.hh"
#include "elementArea.hh"
#include "graphicsScene.hh"
#include "sceneElement.hh"

//== NAMESPACES ===============================================================
namespace VSI {

//=============================================================================
//
//  CLASS VSI::ElementArea - IMPLEMENTATION
//
//=============================================================================

/// Constructor
ElementArea::ElementArea (GraphicsScene *_scene) :
  scene_ (_scene)
{
}

//------------------------------------------------------------------------------

/// Destructor
ElementArea::~ElementArea ()
{
}

//------------------------------------------------------------------------------

/// Bounding rectangle
QRectF ElementArea::boundingRect () const
{
  return elementsBoundingRect_;
}

//------------------------------------------------------------------------------

/// Add a child element
void ElementArea::addElement (SceneElement *_element)
{
  foreach (QGraphicsItem *e, elements_)
    e->setSelected (false);

  elements_.append (_element);
  _element->setParentItem (this);
  prepareGeometryChange ();
  elementsBoundingRect_ = _element->boundingRect () | _element->childrenBoundingRect ();

  _element->setSelected (true);
  update ();
}

//------------------------------------------------------------------------------

/// Remove an element, if its removeable or _force is set
bool ElementArea::removeElement (SceneElement *_element, bool _force)
{
 
  if (!_force && _element->element ()->flags () & ELEMENT_FLAG_NO_DELETE)
    return false;
  if (elements_.contains (_element))
  {
    elements_.removeAll (_element);
    _element->setParentItem (0);
    prepareGeometryChange();
    elementsBoundingRect_ = childrenBoundingRect();
    return true;
  }
  else
    return false;
}

//------------------------------------------------------------------------------

/// All elements
const QList<SceneElement *>& ElementArea::elements () const
{
  return elements_;
}

//------------------------------------------------------------------------------
}