// %flair:license{
// This file is part of the Flair framework distributed under the
// CECILL-C License, Version 1.0.
// %flair:license}
#include "ListWidget.h"
#include "Layout.h"
#include <QListWidget>
#include <QFormLayout>
#include <QLabel>
#include <QListWidgetItem>
#include <QPalette>

#include <iostream>
#include <sstream>

ListWidget::ListWidget(Layout *parent, int row, int col, QString name)
    : FormLayout(parent, row, col, name, "ListWidget") {
  listwidget = new QListWidget();
  object_layout->addRow(new QLabel(name));
  object_layout->addRow(listwidget);

  list_red_pal.setColor(QPalette::HighlightedText, QColor(255, 0, 0));
  list_black_pal.setColor(QPalette::HighlightedText, QColor(255, 255, 255));

  current_item_row = -1;
  is_up_to_date = true;

  connect(listwidget, SIGNAL(currentRowChanged(int)), this,
          SLOT(SelectedItemChanged(int)));

  // to avoid duplicates when adding items 
  SetIsExpandable(true);
}

ListWidget::ListWidget(Layout *parent, int row, int col, QString name, QStringList& items)
    : ListWidget(parent, row, col, name) {
  if (!items.isEmpty()) {
    listwidget->addItems(items);
  }
}

ListWidget::~ListWidget() { delete listwidget; }

//received from the UAV / FlairCore
void ListWidget::XmlEvent(QDomElement dom) {
  is_up_to_date = false;
  // if (dom.attribute("value") != "") {
  //   int new_row = dom.attribute("value");
  //   listwidget->setCurrentRow(new_row);
  // }
  if (dom.attribute("item") != "") {
    QString item = dom.attribute("item");
    QListWidgetItem* widget_item = new QListWidgetItem(item);
    widget_item->setForeground(Qt::red);
    listwidget->addItem(widget_item);
  }
  if (dom.attribute("delete") != "") {
    int row_to_del = dom.attribute("delete").toInt();
    QListWidgetItem* item_to_del = listwidget->takeItem(row_to_del);
    if (item_to_del) {
      delete item_to_del; 
    }
  }
}

void ListWidget::SetUptodate(void) {
  ui_to_var();
  ui_to_xml();
  listwidget->setPalette(list_black_pal);
  is_up_to_date = true;
}

void ListWidget::ui_to_var(void) { current_item_row = listwidget->currentRow(); }

void ListWidget::ui_to_xml(void) {
  SetValue(QString::number(listwidget->currentRow()));
  //add the list of items
  for(int count = 0; count < listwidget->count(); count++) {
    std::string item;
    std::ostringstream item_prop;
    item_prop << "item" << count;
    SetAttribute(QString::fromStdString(item_prop.str()), listwidget->item(count)->text());
    listwidget->item(count)->setForeground(Qt::black);
  }
}

void ListWidget::Reset(void) {
  if (current_item_row != -1) {
    listwidget->setCurrentRow(current_item_row);
  }
}

void ListWidget::LoadEvent(QDomElement dom) {
  std::cout << "In LoadEvent" << std::endl;
  // Parse the item list    
  // QStringList items;
  // int count = 0;
  // while (dom.hasAttribute("item" + QString::number(count))) {
  //   QString item = dom.attribute("item" + QString::number(count));
  //   std::cout << "Item" << count << " : " << item.toStdString() << std::endl;
  //   items.append(item);
  //   count++;
  // }

  // listwidget->addItems(items);

  // if (listwidget->isEnabled() == true) {
    // listwidget->setCurrentIndex((dom.attribute("value")).toInt());
  // }
}

void ListWidget::SelectedItemChanged(int current_row) {
  if (current_row != current_item_row) {
    is_up_to_date = false;
    listwidget->setPalette(list_red_pal);
  } else {
    listwidget->setPalette(list_black_pal);
  }
}

bool ListWidget::IsUptodate(void) {
  return is_up_to_date;
}