desktop: add trip selection dialog

A simple dialog to select a trip. Simply fill a QListWidget without
the model/view rigmarole. So much less painful! Of course that means
that the dialog has to be regenerated everytime it is used.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 47 insertions, 0 deletions

diff --git a/desktop-widgets/tripselectiondialog.cpp b/desktop-widgets/tripselectiondialog.cpp
new file mode 100644
index 000000000..2623fdc10
--- /dev/null
+++ b/desktop-widgets/tripselectiondialog.cpp
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "tripselectiondialog.h"
+#include "core/trip.h"
+#include "core/qthelper.h"
+#include <QShortcut>
+#include <QPushButton>
+
+TripSelectionDialog::TripSelectionDialog(QWidget *parent) : QDialog(parent)
+{
+	ui.setupUi(this);
+	connect(ui.trips, &QListWidget::itemSelectionChanged, this, &TripSelectionDialog::selectionChanged);
+
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	connect(close, &QShortcut::activated, this, &QDialog::close);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	connect(quit, &QShortcut::activated, parent, &QWidget::close);
+
+	// We could use a model, but it seems barely worth the hassle.
+	QStringList list;
+	list.reserve(trip_table.nr);
+	for (int i = 0; i < trip_table.nr; ++i)
+		list.push_back(get_trip_string(trip_table.trips[i]));
+	ui.trips->addItems(list);
+}
+
+void TripSelectionDialog::selectionChanged()
+{
+	ui.buttonBox->button(QDialogButtonBox::Ok)->setEnabled(selectedTrip() != nullptr);
+}
+
+dive_trip *TripSelectionDialog::selectedTrip() const
+{
+	// Accessing the selected index of a QListWidget is ridiculously cumbersome.
+	// Note that "currentItem" is a different beast.
+	QModelIndexList rows = ui.trips->selectionModel()->selectedRows();
+	if (rows.size() != 1)
+		return nullptr;
+	int idx = rows[0].row();
+	if (idx < 0 || idx >= trip_table.nr)
+		return nullptr;
+	return trip_table.trips[idx];
+}
+
+dive_trip *TripSelectionDialog::getTrip()
+{
+	return exec() ? selectedTrip() : nullptr;
+}