/**********************************************************************************************
    Copyright (C) 2018 Oliver Eichler <oliver.eichler@gmx.de>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

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

#include "gis/trk/CTableTrkInfo.h"

#include <QtWidgets>

#include "helpers/CDraw.h"

CTableTrkInfo::CTableTrkInfo(QWidget* parent) : QTreeWidget(parent), INotifyTrk(CGisItemTrk::eVisualTrkTable) {
  actionEdit = new QAction(QIcon("://icons/32x32/EditText.png"), tr("Edit..."), this);
  actionDelete = new QAction(QIcon("://icons/32x32/DeleteMultiple.png"), tr("Delete"), this);

  menu = new QMenu(this);
  menu->addAction(actionEdit);
  menu->addAction(actionDelete);

  connect(actionEdit, &QAction::triggered, this, &CTableTrkInfo::slotEdit);
  connect(actionDelete, &QAction::triggered, this, &CTableTrkInfo::slotDelete);

  connect(this, &CTableTrkInfo::customContextMenuRequested, this, &CTableTrkInfo::slotContextMenu);
  connect(this, &CTableTrkInfo::itemChanged, this, &CTableTrkInfo::slotItemChanged);
  connect(this, &CTableTrkInfo::itemSelectionChanged, this, &CTableTrkInfo::slotItemSelectionChanged);
}

CTableTrkInfo::~CTableTrkInfo() {
  if (trk != nullptr) {
    trk->unregisterVisual(this);
  }
}

void CTableTrkInfo::setTrack(CGisItemTrk* track) {
  setColumnCount(eColMax);

  QStringList labels;
  labels << "#";
  labels << tr("Description");
  setHeaderLabels(labels);

  if (trk != nullptr) {
    trk->unregisterVisual(this);
  }

  clear();
  trk = track;

  if (trk != nullptr) {
    trk->registerVisual(this);
    updateData();
  }

  adjustSize();
}

void CTableTrkInfo::updateData() {
  if (trk == nullptr) {
    return;
  }

  qint32 cnt = 1;
  QList<QTreeWidgetItem*> items;
  for (const CTrackData::trkpt_t& trkpt : trk->getTrackData()) {
    if (trkpt.desc.isEmpty()) {
      continue;
    }

    QTreeWidgetItem* item = new QTreeWidgetItem();
    item->setIcon(eColNum, CDraw::number(cnt++, Qt::black));
    item->setText(eColDesc, trkpt.desc);
    item->setFlags(item->flags() | Qt::ItemIsEditable);
    item->setData(eColDesc, Qt::UserRole, trkpt.idxTotal);
    items << item;
  }

  clear();
  addTopLevelItems(items);
  header()->resizeSections(QHeaderView::ResizeToContents);

  emit sigHasTrkPtInfo(cnt > 1);
}

void CTableTrkInfo::slotContextMenu(const QPoint& point) {
  if (trk == nullptr) {
    return;
  }

  const QList<QTreeWidgetItem*>& items = selectedItems();
  actionEdit->setEnabled(items.count() == 1);

  const QPoint& p = mapToGlobal(point);
  menu->exec(p);
}

void CTableTrkInfo::slotEdit() {
  if (trk == nullptr) {
    return;
  }

  QTreeWidgetItem* item = currentItem();
  editItem(item, eColDesc);
}

void CTableTrkInfo::slotDelete() {
  if (trk == nullptr) {
    return;
  }

  QList<int> indices;
  const QList<QTreeWidgetItem*>& items = selectedItems();
  for (QTreeWidgetItem* item : items) {
    indices << item->data(eColDesc, Qt::UserRole).toInt();
  }

  trk->delTrkPtDesc(indices);
}

void CTableTrkInfo::slotItemChanged(QTreeWidgetItem* item, int column) {
  if ((trk == nullptr) || (column != eColDesc)) {
    return;
  }

  trk->setTrkPtDesc(item->data(eColDesc, Qt::UserRole).toInt(), item->text(eColDesc));
}

void CTableTrkInfo::slotItemSelectionChanged() {
  if (trk == nullptr) {
    return;
  }

  QTreeWidgetItem* item = currentItem();
  if (nullptr != item) {
    trk->setMouseFocusByTotalIndex(item->data(eColDesc, Qt::UserRole).toInt(), CGisItemTrk::eFocusMouseMove,
                                   "CTableTrk");
  }
}
