/**
*******************************************************************************

  @file /gui/model/selection.cpp
  @brief vyber objektu na scene
  

  @author Pavel + Vajicek
  @version 0.1
 
******************************************************************************/
#include "gui/model/selection.h"

namespace gui{





/*TSelectableObject**********************************************************************/

TSelectableObject::TSelectableObject()
{
	selectable = true;
	selected = false;
	preselected = false;
	iPriorityOfSelection = 1;
	iTag = 0;
}

TSelectableObject::~TSelectableObject()
{
  if(TSelection::sel){
    TSelection::sel->unselect(this);
    TSelection::sel->preunselect();
  }
}

void TSelectableObject::onClick()
{
  TSelection::sel->select(this);
}

void TSelectableObject::onMouseOver()
{
  TSelection::sel->preselect(this);
}

void TSelectableObject::select()
{
	selected = true;
}

void TSelectableObject::unselect()
{
	selected = false;
}

void TSelectableObject::preselect()
{
	preselected = true;
}

void TSelectableObject::preunselect()
{
	preselected = false;
}






/*TSelection*****************************************************************************/

TSelection::TSelection(){
  preselection = NULL;
}

TSelection::Tvso::iterator TSelection::findSelObj2(TSelectableObject* o){
  Tvso::iterator vsoi = selection.begin();
  while(vsoi != selection.end()){
    if(*vsoi == o)
      return vsoi;
    vsoi++;
  }
  return vsoi;
}

int TSelection::findSelObj(TSelectableObject* o)
{
  Tvso::iterator vsoi = selection.begin();
  for(int i = 0; vsoi != selection.end(); i++ ){
    if(*vsoi == o)
      return i;
    vsoi++;
  }
  return -1;
}

void TSelection::select(TSelectableObject* o){
  if( o->selectable && findSelObj(o) < 0 ){
    selection.push_back(o);
    o->select();          
  }  
}

void TSelection::unselect(TSelectableObject* o){
  TSelection::Tvso::iterator it = findSelObj2(o);
  if( it != selection.end() ){
    selection.erase(it);
    o->unselect();          
  }
}

void TSelection::unselectAll(){
  
  for(Tvso::iterator vsoi = selection.begin();
      vsoi != selection.end(); 
      vsoi++ )
  {
    (*vsoi)->unselect();
  }
}

void TSelection::preselect(TSelectableObject* o){
  if(o->selectable && o != preselection ){
    if(preselection)
      preselection->preunselect();
    o->preselect();
    preselection = o;
  }
}

void TSelection::preunselect(){
  if(preselection)
    preselection->preunselect();
  preselection = NULL;
}

TSelection* TSelection::sel = NULL;

void TSelection::initSelection(){
  sel = new TSelection();
}

void TSelection::destroySelection(){
  delete sel;
}

/*THighlighting**************************************************************************/

void THighlighting::highlight(int on){
  highlightState = on;
}

void THighlighting::highlightSwitch(){
  highlightState = !highlightState;
}

void THighlighting::drawHighlight(){
}

THighlighting::THighlighting(){
  highlightState = 0;
}


}//namespace