Implement deleting entire trip groups

Fixes #29.

autotests/tripgrouptest.cpp

@@ -203,6 +203,23 @@ private Q_SLOTS:
         QCOMPARE(g.elements().size(), resMgr.batches().size() - 1);
         QCOMPARE(g.name(), QStringLiteral("Oslo Airport (June 2000)"));
     }
+
+    void testDeletion()
+    {
+        ReservationManager resMgr;
+        clearReservations(&resMgr);
+        resMgr.importReservation(readFile(QStringLiteral(SOURCE_DIR "/../tests/randa2017.json")));
+        TripGroupManager mgr;
+        QSignalSpy addSpy(&mgr, &TripGroupManager::tripGroupAdded);
+        mgr.setReservationManager(&resMgr);
+        QCOMPARE(addSpy.size(), 1);
+        QVERIFY(resMgr.batches().size() > 8);
+        const auto groupId = addSpy.at(0).at(0).toString();
+        const auto g = mgr.tripGroup(groupId);
+        mgr.removeReservationsInGroup(groupId);
+        QCOMPARE(resMgr.batches().size(), 0);
+        QCOMPARE(mgr.tripGroups().size(), 0);
+    }
 };
 QTEST_GUILESS_MAIN(TripGroupTest)
 

src/app/TimelinePage.qml

@@ -124,6 +124,28 @@ Kirigami.ScrollablePage {
         }
     }
 
+    Kirigami.OverlaySheet {
+        id: deleteTripGroupWarningSheet
+        property string tripGroupId
+
+        QQC2.Label {
+            text: i18n("Do you really want to delete this trip?")
+            wrapMode: Text.WordWrap
+        }
+
+        footer: RowLayout {
+            QQC2.Button {
+                Layout.alignment: Qt.AlignHCenter
+                text: i18n("Delete")
+                icon.name: "edit-delete"
+                onClicked: {
+                    deleteTripGroupWarningSheet.sheetOpen = false;
+                    TripGroupManager.removeReservationsInGroup(deleteTripGroupWarningSheet.tripGroupId);
+                }
+            }
+        }
+    }
+
     Kirigami.CardsListView {
         id: listView
         model: TripGroupProxyModel

src/app/TripGroupDelegate.qml

@@ -69,7 +69,7 @@ Kirigami.AbstractCard {
                        Localizer.formatDateTime(root.tripGroup, "beginDateTime"))
         }
 
-        RowLayout {
+        Row {
             visible: weatherForecast.valid
 
             Kirigami.Icon {
@@ -103,6 +103,22 @@ Kirigami.AbstractCard {
             }
         }
 
+        Kirigami.Separator {
+            visible: root.rangeType == TimelineElement.RangeBegin
+        }
+
+        Row {
+            visible: root.rangeType == TimelineElement.RangeBegin
+            anchors.right: parent.right
+            QQC2.ToolButton {
+                icon.name: "edit-delete"
+                onClicked: {
+                    deleteTripGroupWarningSheet.tripGroupId = root.tripGroupId
+                    deleteTripGroupWarningSheet.sheetOpen = true
+                }
+            }
+        }
+
         Component.onCompleted: {
             // hide content entirely in the header-only end elements
             parent.visible = contentLayout.visible

src/app/tripgroupmanager.cpp

@@ -143,6 +143,19 @@ void TripGroupManager::clear()
     d.removeRecursively();
 }
 
+void TripGroupManager::removeReservationsInGroup(const QString &groupId)
+{
+    const auto groupIt = m_tripGroups.constFind(groupId);
+    if (groupIt == m_tripGroups.constEnd()) {
+        return;
+    }
+
+    const auto elements = groupIt.value().elements();
+    for (const auto &element : elements) {
+        m_resMgr->removeBatch(element);
+    }
+}
+
 void TripGroupManager::batchAdded(const QString &resId)
 {
     auto it = std::lower_bound(m_reservations.begin(), m_reservations.end(), resId, [this](const auto &lhs, const auto &rhs) {

src/app/tripgroupmanager.h

@@ -33,6 +33,9 @@ public:
 
     static void clear(); // for testing only!
 
+    /** Deletes all elements in the trip group with Identifier @p id. */
+    Q_INVOKABLE void removeReservationsInGroup(const QString &groupId);
+
 Q_SIGNALS:
     void tripGroupAdded(const QString &id);
     void tripGroupChanged(const QString &id);