source: flair-src/branches/mavlink/tools/FlairGCS/src/ListWidget.cpp@ 64

// %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 <sstream>



//to remove, for tests only

#include <iostream>



ListWidget::ListWidget(Layout *parent, int row, int col, QString name)

    : currentItemRow(-1), isUpToDate(true),

      FormLayout(parent, row, col, name, "ListWidget") {

  listwidget = new QListWidget();

  // construct the object in 2 times, to have the label above the list

  object_layout->addRow(new QLabel(name));

  object_layout->addRow(listwidget);

  // modify the color palette to have the selected item text in red

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

  palListDefault.setColor(QPalette::HighlightedText, QColor(255, 255, 255));

  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() {

  if (listwidget) {

    delete listwidget;

  }

}



void ListWidget::XmlEvent(QDomElement dom) {

  isUpToDate = false;

  if (dom.attribute("item") != "") {

    QString item = dom.attribute("item");

    QListWidgetItem *widget_item = new QListWidgetItem(item);

    // new item, so the text is red

    widget_item->setForeground(Qt::red);

    listwidget->addItem(widget_item);

  }

  if (dom.attribute("delete") != "") {

    int row_to_del = dom.attribute("delete").toInt();

    RemoveItemFromXml(row_to_del);

    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(palListDefault);

  isUpToDate = true;

}



void ListWidget::ui_to_var(void) {

  currentItemRow = 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 (currentItemRow != -1) {

    // TODO recharger l'élément supprimé si non appliqué ou recharger la variable

    listwidget->setCurrentRow(currentItemRow);

  }

}



void ListWidget::LoadEvent(QDomElement dom) {

  //function not tested

  std::cout << "FlairGCS LoadEvent" << std::endl;

  if (listwidget->isEnabled() == true) {

    std::cout << "FlairGCS LoadEvent loading" << std::endl;

    listwidget->clear();

    QStringList items;

    int count = 0;

    while (dom.hasAttribute("item" + QString::number(count))) {

      std::cout << "FlairGCS LoadEvent boucle" << std::endl;

      listwidget->addItem(dom.attribute("item" + QString::number(count)));

      count++;

    }

  }

}



void ListWidget::SelectedItemChanged(int current_row) {

  if (current_row != currentItemRow) {

    isUpToDate = false;

    listwidget->setPalette(palListRed);

  } else {

    listwidget->setPalette(palListDefault);

  }

}



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



void ListWidget::RemoveItemFromXml(int row_to_del) {

  // Shift the elements in the XML file to have the one to delete at the end

  std::ostringstream item_prop;

  for (int count = row_to_del; count < listwidget->count() - 1; count++) {

    item_prop << "item" << count;

    SetAttribute(QString::fromStdString(item_prop.str()),

                 listwidget->item(count + 1)->text());

    // Clear the value of the stringstream

    item_prop.str(std::string());  

  }

  // Delete the last element from the XML file

  item_prop << "item" << (listwidget->count() - 1);

  RemoveAttribute(QString::fromStdString(item_prop.str()));

}