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Wait for the end of an acquisition to validate an operation (2)...
Wait for the end of an acquisition to validate an operation (2) Creates signal in VariableController emitted when there is no pending acquisition

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DataSourceWidget.cpp
123 lines | 3.7 KiB | text/x-c | CppLexer
#include <DataSource/DataSourceWidget.h>
#include <ui_DataSourceWidget.h>
#include <DataSource/DataSourceItem.h>
#include <DataSource/DataSourceTreeWidgetHelper.h>
#include <DataSource/DataSourceTreeWidgetItem.h>
#include <QMenu>
namespace {
/// Number of columns displayed in the tree
const auto TREE_NB_COLUMNS = 1;
/// Header labels for the tree
const auto TREE_HEADER_LABELS = QStringList{QObject::tr("Name")};
/**
* Creates the item associated to a data source
* @param dataSource the data source for which to create the item
* @return the new item
*/
DataSourceTreeWidgetItem *createTreeWidgetItem(DataSourceItem *dataSource)
{
// Creates item for the data source
auto item = new DataSourceTreeWidgetItem{dataSource};
// Generates items for the children of the data source
for (auto i = 0; i < dataSource->childCount(); ++i) {
item->addChild(createTreeWidgetItem(dataSource->child(i)));
}
return item;
}
} // namespace
DataSourceWidget::DataSourceWidget(QWidget *parent)
: QWidget{parent},
ui{new Ui::DataSourceWidget},
m_Root{
std::make_unique<DataSourceItem>(DataSourceItemType::NODE, QStringLiteral("Sources"))}
{
ui->setupUi(this);
// Set tree properties
ui->treeWidget->setColumnCount(TREE_NB_COLUMNS);
ui->treeWidget->setHeaderLabels(TREE_HEADER_LABELS);
ui->treeWidget->setContextMenuPolicy(Qt::CustomContextMenu);
// Connection to show a menu when right clicking on the tree
connect(ui->treeWidget, &QTreeWidget::customContextMenuRequested, this,
&DataSourceWidget::onTreeMenuRequested);
// Connection to filter tree
connect(ui->filterLineEdit, &QLineEdit::textChanged, this, &DataSourceWidget::filterChanged);
// First init
updateTreeWidget();
}
DataSourceWidget::~DataSourceWidget() noexcept
{
delete ui;
}
void DataSourceWidget::addDataSource(DataSourceItem *dataSource) noexcept
{
// Merges the data source (without taking its root)
if (dataSource) {
for (auto i = 0, count = dataSource->childCount(); i < count; ++i) {
m_Root->merge(*dataSource->child(i));
}
updateTreeWidget();
}
}
void DataSourceWidget::updateTreeWidget() noexcept
{
ui->treeWidget->clear();
auto rootItem = createTreeWidgetItem(m_Root.get());
ui->treeWidget->addTopLevelItem(rootItem);
rootItem->setExpanded(true);
// Sorts tree
ui->treeWidget->setSortingEnabled(true);
ui->treeWidget->sortByColumn(0, Qt::AscendingOrder);
}
void DataSourceWidget::filterChanged(const QString &text) noexcept
{
auto validateItem = [&text](const DataSourceTreeWidgetItem &item) {
auto regExp = QRegExp{text, Qt::CaseInsensitive, QRegExp::Wildcard};
// An item is valid if any of its metadata validates the text filter
auto itemMetadata = item.data()->data();
auto itemMetadataEnd = itemMetadata.cend();
auto acceptFilter
= [&regExp](const auto &variant) { return variant.toString().contains(regExp); };
return std::find_if(itemMetadata.cbegin(), itemMetadataEnd, acceptFilter)
!= itemMetadataEnd;
};
// Applies filter on tree widget
DataSourceTreeWidgetHelper::filter(*ui->treeWidget, validateItem);
}
void DataSourceWidget::onTreeMenuRequested(const QPoint &pos) noexcept
{
// Retrieves the selected item in the tree, and build the menu from its actions
if (auto selectedItem = dynamic_cast<DataSourceTreeWidgetItem *>(ui->treeWidget->itemAt(pos))) {
QMenu treeMenu{};
treeMenu.addActions(selectedItem->actions());
if (!treeMenu.isEmpty()) {
treeMenu.exec(QCursor::pos());
}
}
}