/**
**
** @RDE_HEADER@
** Used to manage symbol look up dialog.
** $Id$
** $HeadURL$
** $Author$
**
** -----------------------------------------------------------------------------------------------
**
** Hardware-Environment: Intel-PC
** Software-Environment: Windows 7, Qt 5.4. ArcGIS 10.2.5
**
** Language ........: C++ 11
**
** -----------------------------------------------------------------------------------------------
**
** Author ...........: Jörg Turla, SPD G, Tel. 3132
**
** -----------------------------------------------------------------------------------------------
**
** Notes .........:
**
**   17.08.2016, JT  : First edition for use with Qt5
**
** -----------------------------------------------------------------------------------------------
*/
#include "lookup_symbol_manager.h"
#include "lookup_symbol_dlg.h"


#include "plan_editor.h"
#include "plan_editor_session.h"

#include <Symbology/sidc_codec.h>
#include <Symbology/sidc_builder_base.h>

#include <SymbologyGui/base_symbol_lookup_widget.h> // AdvancedSymbology::Gui::SYMBOL_TYPE

#include <LtsWidgets/lts_base_layout_widget.h>
#include <LtsWidgets/lts_dialog.h>

#include <QtCore/QPointer>

#include <QTimer>

namespace PlanEditor
{


class LookupSymbolManager::InternalData
{
public:
  PlanEditor                                     *m_planEditor;
  SituationMap::Map                              *m_map;
  const PlanEditorSession                        &m_session;

  // use QPointer here because LtsDialog has a close button which can destroy the widget
  QPointer<LookupSymbolDlg>                                   m_dlgSymbolLookup; // 'wraps' bslWidget
  QPointer<AdvancedSymbology::Gui::BaseSymbolLookupWidget>  m_bslWidgetSymbols;
  QPointer<AdvancedSymbology::Gui::BaseSymbolLookupWidget>  m_bslWidgetParticipant;


  QPointer<AdvancedSymbology::Gui::BaseSymbolLookupWidget> &getBaseSymbolLookupWidgetRef()
  {
    if (m_isParticipantDialog)
      return m_bslWidgetParticipant;
    return m_bslWidgetSymbols;
  }

  QSet<QString>                                   m_participantSidcsInUse;  // baseSymbolCodes

  QStringList                                     m_symbolScopeList;

  bool                                            m_isParticipantDialog;

  InternalData(PlanEditor *planEditor, SituationMap::Map *map, const PlanEditorSession &session)
    : m_planEditor(planEditor)
    , m_map(map)
    , m_session(session)
    , m_dlgSymbolLookup()
    , m_symbolScopeList()
    , m_isParticipantDialog(false)
  {}

  ~InternalData()
  {
    delete m_dlgSymbolLookup;
    m_dlgSymbolLookup = nullptr;
  }

};
// LookupSymbolManager::InternalData


LookupSymbolManager::LookupSymbolManager(PlanEditor                       *planEditor
                                         , SituationMap::Map                *map
                                         , const PlanEditorSession          &session)

  : QObject(planEditor),
    m_internal(new LookupSymbolManager::InternalData(planEditor, map, session))
{
  // in former times, every single change of the (user) searchString leads
  // to a re-fill of the m_baseSymbolModel.
  // Following, this signal BaseSymbolModel::readModelFinished was connect to
  // LookupSymbolManager::readModelFinished.
  // Since the model is stable, use singleShot now:
  QTimer::singleShot(1000, this, [this]()
  {
    emit readModelFinished();
  });
}

LookupSymbolManager::~LookupSymbolManager()
{
  // most likely we have still the lookupWidgets, cleanup:
  delete m_internal->m_bslWidgetSymbols;
  m_internal->m_bslWidgetSymbols = nullptr;

  delete m_internal->m_bslWidgetParticipant;
  m_internal->m_bslWidgetParticipant = nullptr;

  delete m_internal;
  m_internal = nullptr;
}

void LookupSymbolManager::setParticipantsSidcsInUse(const QSet<QString> &sidcs)
{
  m_internal->m_participantSidcsInUse = sidcs;
}

AdvancedSymbology::SymbolDictionary &LookupSymbolManager::symbolDictionary()
{
  return m_internal->m_map->symbolDictionary();
}


bool LookupSymbolManager::isParticipantDialog() const
{
  return m_internal->m_isParticipantDialog;
}

void LookupSymbolManager::openDialog(const QString &title, const QString &widgetId)
{
  if (m_internal->m_dlgSymbolLookup)
    onCloseDialog();

  m_internal->m_dlgSymbolLookup = new LookupSymbolDlg(this, m_internal->m_planEditor, widgetId, m_internal->getBaseSymbolLookupWidgetRef());

  if (m_internal->m_isParticipantDialog)
  {
    m_internal->m_dlgSymbolLookup->setParticipantMode(true);
    m_internal->m_dlgSymbolLookup->setValidBaseSymbolCodes(m_internal->m_participantSidcsInUse);
  }
  m_internal->m_session.addWidget(m_internal->m_dlgSymbolLookup
                                  , m_internal->m_planEditor->title()
                                  , title
                                  , LtsWidgets::LayoutArea::eDialogTab
                                  , true);

  m_internal->m_dlgSymbolLookup->setTitle(title);
  connect(m_internal->m_dlgSymbolLookup.data(), &LookupSymbolDlg::beginDestroy, this, &LookupSymbolManager::onLookupSymbolDialogBeginDestroy);
  connect(m_internal->m_dlgSymbolLookup.data(), &LookupSymbolDlg::addToSymbolFavourites, this, &LookupSymbolManager::addToSymbolFavourites);
  connect(m_internal->m_dlgSymbolLookup.data(), &LookupSymbolDlg::symbolDoubleClicked, this, &LookupSymbolManager::onSymbolDoubleClicked);

  m_internal->m_dlgSymbolLookup->onUpdateSymbolScopes(m_internal->m_symbolScopeList);
}

void LookupSymbolManager::onLookupSymbolDialogBeginDestroy()
{
  m_internal->getBaseSymbolLookupWidgetRef() = m_internal->m_dlgSymbolLookup->detachAndTakeBaseSymbolLookupWidget();
}


void LookupSymbolManager::onCloseDialog()
{
  if (m_internal->m_dlgSymbolLookup)
  {
    delete m_internal->m_dlgSymbolLookup;
    m_internal->m_dlgSymbolLookup = nullptr;
  }
}

void LookupSymbolManager::onOpenSymbolDialog()
{
  if (m_internal->m_dlgSymbolLookup)
    return;
  m_internal->m_isParticipantDialog = false;
  openDialog(tr("Symbol-Lookup"), QStringLiteral("PlanEditor_Symbols"));
}

void LookupSymbolManager::onOpenParticipantDialog()
{
  if (m_internal->m_dlgSymbolLookup)
    return;
  m_internal->m_isParticipantDialog = true;
  openDialog(tr("Participant-Lookup"), QStringLiteral("PlanEditor_Participants"));
}

void LookupSymbolManager::onUpdateSymbolScopes(const QStringList &scopeList)
{
  m_internal->m_symbolScopeList = scopeList;
  if (m_internal->m_dlgSymbolLookup)
    m_internal->m_dlgSymbolLookup->onUpdateSymbolScopes(m_internal->m_symbolScopeList);
}

void LookupSymbolManager::initializeSymbolLookupModelDrag()
{
  // not supported anymore,
  // since approach using DropHandlerKey does not really match with SINGLE
  // baseSymbol per process.
  // DropHandlyerKey is the address of the DropCreateSymbol and the method
  // transfers these adresses to every single baseSymbolItem...
  // If there will exists more than one PlanEditor simultaneously it will not work :-(
  //
//  for (int idx = 0; idx < m_internal->m_baseSymbolModel->size(); ++idx)
//  {
//    if (m_internal->m_baseSymbolModel->getDropHandlerKey(idx) == 0L)
//    {
//      const QString &sidc                = m_internal->m_baseSymbolModel->getSidc(idx);
//      qulonglong      dropEventHandlerKey = m_internal->m_planEditor->createSymbolDropEvent(sidc);

//      m_internal->m_baseSymbolModel->setDropHandlerKey(idx, dropEventHandlerKey);
//    }
//  }
}

void LookupSymbolManager::onSymbolDoubleClicked(const QString &baseSymbolCode)
{
  if (!m_internal->m_planEditor)
    return;

  const QString &encodedCompleteCode = AdvancedSymbology::SidcBuilderBase::baseSymbolCodeToSidc(baseSymbolCode);
  m_internal->m_planEditor->onSymbolCreateRubberband(encodedCompleteCode, m_internal->m_isParticipantDialog);
}

} // namespace PlanEditor