QML UI: add context menu to delete dive

This allows the user to delete the currently shown dive. This action takes
effect right away, no confirmation, it gets right away written to the
local git cache.

One idea for an undo operation here could be to simply reset the git tree
to HEAD^ and reload. Not elegant, but would work.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-mobile/qml/DiveDetails.qml

@@ -31,16 +31,19 @@ MobileComponents.Page {
 	states: [
 		State {
 			name: "view"
+			PropertyChanges { target: diveDetailsPage; contextualActions: deleteAction }
 			PropertyChanges { target: diveDetailList; visible: true }
 			PropertyChanges { target: detailsEditScroll; visible: false }
 		},
 		State {
 			name: "edit"
+			PropertyChanges { target: diveDetailsPage; contextualActions: null }
 			PropertyChanges { target: diveDetailList; visible: false }
 			PropertyChanges { target: detailsEditScroll; visible: true }
 		},
 		State {
 			name: "add"
+			PropertyChanges { target: diveDetailsPage; contextualActions: null }
 			PropertyChanges { target: diveDetailList; visible: false }
 			PropertyChanges { target: detailsEditScroll; visible: true }
 		}
@@ -53,26 +56,19 @@ MobileComponents.Page {
 		state = "view"
 		Qt.inputMethod.hide()
 	}
-/* this can be done by hitting the back key
-	contextualActions: [
+
+	property list<QtObject> deleteAction: [
 		Action {
-			text: state === "view" ? "Back to dive list" : "Cancel"
-			iconName: "dialog-cancel"
+			text: "Delete dive"
+			iconName: "trash-empty"
 			onTriggered: {
-				if (state === "view") {
-					stackView.pop()
-					contextDrawer.close()
-				} else if (state === "edit") {
-					endEditMode()
-					contextDrawer.close()
-				} else {
-					endAddMode()
-					contextDrawer.close()
-				}
+				manager.deleteDive(diveDetailsListView.currentItem.modelData.dive.id)
+				stackView.pop()
+				contextDrawer.close()
 			}
 		}
 	]
- */
+
 	mainAction: Action {
 		iconName: state !== "view" ? "document-save" : "document-edit"
 		onTriggered: {