ecvItemSelectionDlg.cpp

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#include "ecvItemSelectionDlg.h"
 
// Qt
#include <QDialog>
#include <QListWidgetItem>
 
ccItemSelectionDlg::ccItemSelectionDlg(bool multiSelectionEnabled,
                                       QWidget* parent /*=0*/,
                                       QString itemName /*="entities"*/,
                                       QString labelStr /*=QString()*/)
    : QDialog(parent, Qt::Tool), Ui::ItemSelectionDlg() {
    setupUi(this);
 
    // multi-selection mode
    if (multiSelectionEnabled) {
        label->setText(tr("Please select one or several %1:\n(press CTRL+A to "
                          "select all)")
                               .arg(itemName));
        listWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);
    } else {
        label->setText(tr("Please select one %1").arg(itemName));
    }
 
    if (!labelStr.isNull()) {
        label->setText(labelStr);
    }
}
 
void ccItemSelectionDlg::setItems(const QStringList& items,
                                  int defaultSelectedIndex) {
    for (int i = 0; i < items.size(); ++i) {
        // add one line per entity in the combo-box
        listWidget->insertItem(static_cast<int>(i),
                               new QListWidgetItem(items[i]));
    }
 
    // default selection
    if (defaultSelectedIndex >= 0 && defaultSelectedIndex < items.size()) {
        listWidget->item(defaultSelectedIndex)->setSelected(true);
        // listWidget->setItemSelected(listWidget->item(defaultSelectedIndex),
        // true);
    }
}
 
int ccItemSelectionDlg::getSelectedIndex() const {
    // get selected items
    QList<QListWidgetItem*> list = listWidget->selectedItems();
    return list.empty() ? -1 : listWidget->row(list.front());
}
 
void ccItemSelectionDlg::getSelectedIndexes(std::vector<int>& indexes) const {
    // get selected items
    QList<QListWidgetItem*> list = listWidget->selectedItems();
 
    try {
        indexes.resize(static_cast<size_t>(list.size()));
    } catch (const std::bad_alloc&) {
        // not enough memory?!
        return;
    }
 
    for (int i = 0; i < list.size(); ++i) {
        indexes[i] = listWidget->row(list[i]);
    }
}
 
int ccItemSelectionDlg::SelectEntity(const ccHObject::Container& entities,
                                     int selectedIndex /*=0*/,
                                     QWidget* parent /*=0*/,
                                     QString label /*=QString()*/) {
    ccItemSelectionDlg epDlg(false, parent, tr("entity"), label);
 
    QStringList items;
    for (size_t i = 0; i < entities.size(); ++i) {
        // add one line per entity
        items << QString("%1 (ID=%2)")
                         .arg(entities[i]->getName())
                         .arg(entities[i]->getUniqueID());
    }
    epDlg.setItems(items, selectedIndex);
 
    if (!epDlg.exec()) {
        // cancelled by the user
        return -1;
    }
 
    return epDlg.getSelectedIndex();
}
 
bool ccItemSelectionDlg::SelectEntities(const ccHObject::Container& entities,
                                        std::vector<int>& selectedIndexes,
                                        QWidget* parent /*=0*/,
                                        QString label /*=QString()*/) {
    selectedIndexes.clear();
 
    ccItemSelectionDlg epDlg(true, parent, tr("entities"), label);
 
    QStringList items;
    for (size_t i = 0; i < entities.size(); ++i) {
        // add one line per entity
        items << QString("%1 (ID=%2)")
                         .arg(entities[i]->getName())
                         .arg(entities[i]->getUniqueID());
    }
    epDlg.setItems(items, -1);
 
    if (!epDlg.exec()) return false;
 
    epDlg.getSelectedIndexes(selectedIndexes);
    return true;
}