// Created on: 2017-06-16
// Created by: Natalia ERMOLAEVA
// Copyright (c) 2017 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <inspector/DFBrowser_SearchView.hxx>

#include <inspector/DFBrowser_HighlightDelegate.hxx>
#include <inspector/DFBrowser_SearchLine.hxx>
#include <inspector/DFBrowser_SearchLineModel.hxx>
#include <inspector/DFBrowser_Window.hxx>

#include <inspector/DFBrowserPane_Tools.hxx>

#include <inspector/TreeModel_ModelBase.hxx>
#include <inspector/TreeModel_Tools.hxx>

#include <inspector/ViewControl_Tools.hxx>

#include <Standard_WarningsDisable.hxx>
#include <QAbstractProxyModel>
#include <QGridLayout>
#include <QHeaderView>
#include <QTableView>
#include <QWidget>
#include <Standard_WarningsRestore.hxx>

static const int DEFAULT_ICON_SIZE = 40;

// =======================================================================
// function : Constructor
// purpose :
// =======================================================================
DFBrowser_SearchView::DFBrowser_SearchView(QWidget* theParent)
    : QObject(theParent)
{
  myMainWindow         = new QWidget(theParent);
  QGridLayout* aLayout = new QGridLayout(myMainWindow);
  aLayout->setContentsMargins(0, 0, 0, 0);

  myTableView = new QTableView(myMainWindow);
  myTableView->verticalHeader()->setVisible(false);
  myTableView->verticalHeader()->setDefaultSectionSize(DEFAULT_ICON_SIZE
                                                       + TreeModel_Tools::HeaderSectionMargin());
  myTableView->setIconSize(QSize(DEFAULT_ICON_SIZE, DEFAULT_ICON_SIZE));
  myTableView->horizontalHeader()->setVisible(false);
  myTableView->horizontalHeader()->setStretchLastSection(true);

  myTableView->viewport()->setAttribute(Qt::WA_Hover);
  myTableView->setItemDelegate(new DFBrowser_HighlightDelegate(myTableView));

  aLayout->addWidget(myTableView);

  ViewControl_Tools::SetWhiteBackground(myTableView);
  myTableView->setGridStyle(Qt::NoPen);
}

// =======================================================================
// function : InitModels
// purpose :
// =======================================================================
void DFBrowser_SearchView::InitModels()
{
  QAbstractItemModel* aModel = mySearchLine->GetCompletionModel();
  myTableView->setModel(aModel);
  myTableView->setColumnWidth(0, 0); // to hide column
  myTableView->setColumnWidth(1, DEFAULT_ICON_SIZE + TreeModel_Tools::HeaderSectionMargin());

  QItemSelectionModel* aSelectionModel = new QItemSelectionModel(aModel);
  myTableView->setSelectionMode(QAbstractItemView::SingleSelection);
  myTableView->setSelectionModel(aSelectionModel);
  connect(aSelectionModel,
          SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
          this,
          SLOT(onTableSelectionChanged(const QItemSelection&, const QItemSelection&)));
  connect(myTableView,
          SIGNAL(doubleClicked(const QModelIndex&)),
          this,
          SLOT(onTableDoubleClicked(const QModelIndex&)));
}

// =======================================================================
// function : onTableSelectionChanged
// purpose :
// =======================================================================
void DFBrowser_SearchView::onTableSelectionChanged(const QItemSelection&, const QItemSelection&)
{
  QItemSelectionModel* aSelectionModel  = myTableView->selectionModel();
  QModelIndexList      aSelectedIndices = aSelectionModel->selectedIndexes();
  QModelIndex          aSelectedIndex   = TreeModel_ModelBase::SingleSelected(aSelectedIndices, 2);
  if (!aSelectedIndex.isValid())
    return;
  QAbstractProxyModel* aTableModel = dynamic_cast<QAbstractProxyModel*>(myTableView->model());
  if (!aTableModel)
    return;
  DFBrowser_SearchLineModel* aSourceModel =
    dynamic_cast<DFBrowser_SearchLineModel*>(aTableModel->sourceModel());
  if (!aSourceModel)
    return;

  QModelIndex aSourceSelectedIndex = aTableModel->mapToSource(aSelectedIndex);
  emit        pathSelected(aSourceModel->GetPath(aSourceSelectedIndex),
                    aSourceModel->GetValue(aSourceSelectedIndex));
}

// =======================================================================
// function : onTableDoubleClicked
// purpose :
// =======================================================================
void DFBrowser_SearchView::onTableDoubleClicked(const QModelIndex& theIndex)
{
  QAbstractProxyModel* aTableModel = dynamic_cast<QAbstractProxyModel*>(myTableView->model());
  if (!aTableModel)
    return;
  DFBrowser_SearchLineModel* aSourceModel =
    dynamic_cast<DFBrowser_SearchLineModel*>(aTableModel->sourceModel());
  if (!aSourceModel)
    return;

  QModelIndex aSourceSelectedIndex = aTableModel->mapToSource(theIndex);
  emit        pathDoubleClicked(aSourceModel->GetPath(aSourceSelectedIndex),
                         aSourceModel->GetValue(aSourceSelectedIndex));
}