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>

desktop-widgets/CMakeLists.txt

@@ -43,6 +43,7 @@ set (SUBSURFACE_UI
 	shifttimes.ui
 	tableview.ui
 	templateedit.ui
+	tripselectiodialog.ui
 	urldialog.ui
 	webservices.ui
 	tab-widgets/maintab.ui
@@ -130,6 +131,8 @@ set(SUBSURFACE_INTERFACE
 	tagwidget.h
 	textedit.cpp
 	textedit.h
+	tripselectiondialog.cpp
+	tripselectiondialog.h
 	updatemanager.cpp
 	updatemanager.h
 )

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;
+}

desktop-widgets/tripselectiondialog.h

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef TRIPSELECTIONDIALOG_H
+#define TRIPSELECTIONDIALOG_H
+
+#include <QDialog>
+#include "ui_tripselectiondialog.h"
+
+struct dive_trip;
+
+class TripSelectionDialog : public QDialog {
+	Q_OBJECT
+private
+slots:
+	void selectionChanged();
+public:
+	TripSelectionDialog(QWidget *parent); // Must pass in MainWindow for QShortcut hackery.
+	dive_trip *getTrip(); // NULL if user canceled.
+private:
+	dive_trip *selectedTrip() const;
+	Ui::TripSelectionDialog ui;
+};
+
+#endif // TRIPSELECTIONDIALOG_H

desktop-widgets/tripselectiondialog.ui

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>TripSelectionDialog</class>
+ <widget class="QDialog" name="TripSelectionDialog">
+  <property name="windowModality">
+   <enum>Qt::WindowModal</enum>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>560</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Select trip</string>
+  </property>
+  <property name="windowIcon">
+   <iconset>
+    <normalon>:subsurface-icon</normalon>
+   </iconset>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QListWidget" name="trips">
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="../subsurface.qrc"/>
+ </resources>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>TripSelectionDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>TripSelectionDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>