QML UI: enable editing of weight

But only if there is only one weight system defined in the dive. Otherwise
display a read only text that explains that this cannot be edited.

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

qt-mobile/qml/DiveDetails.qml

@@ -70,7 +70,14 @@ MobileComponents.Page {
 				buddy = diveDetailsListView.currentItem.modelData.dive.buddy
 				divemaster = diveDetailsListView.currentItem.modelData.dive.divemaster
 				notes = diveDetailsListView.currentItem.modelData.dive.notes
-				weight = diveDetailsListView.currentItem.modelData.dive.sumWeight
+				if (diveDetailsListView.currentItem.modelData.dive.singleWeight) {
+					// we have only one weight, go ahead, have fun and edit it
+					weight = diveDetailsListView.currentItem.modelData.dive.sumWeight
+				} else {
+					// careful when translating, this text is "magic" in DiveDetailsEdit.qml
+					weight = "cannot edit multiple weight systems"
+				}
+
 				diveDetailsPage.state = "edit"
 			}
 		}

qt-mobile/qml/DiveDetailsEdit.qml

@@ -139,6 +139,7 @@ Item {
 			}
 			TextField {
 				id: txtWeight
+				readOnly: (text == "cannot edit multiple weight systems" ? true : false)
 				Layout.fillWidth: true
 			}
 
@@ -167,7 +168,7 @@ Item {
 				// apply the changes to the dive_table
 				manager.commitChanges(dive_id, detailsEdit.dateText, detailsEdit.locationText, detailsEdit.gpsText, detailsEdit.durationText,
 						      detailsEdit.depthText, detailsEdit.airtempText, detailsEdit.watertempText, detailsEdit.suitText,
-						      detailsEdit.buddyText, detailsEdit.divemasterText, detailsEdit.notesText)
+						      detailsEdit.buddyText, detailsEdit.divemasterText, detailsEdit.weightText, detailsEdit.notesText)
 				// apply the changes to the dive detail view - since the edit could have changed the order
 				// first make sure that we are looking at the correct dive - our model allows us to look
 				// up the index based on the unique dive_id

qt-mobile/qmlmanager.cpp

@@ -329,7 +329,7 @@ void QMLManager::refreshDiveList()
 
 // update the dive and return the notes field, stripped of the HTML junk
 QString QMLManager::commitChanges(QString diveId, QString date, QString location, QString gps, QString duration, QString depth,
-				  QString airtemp, QString watertemp, QString suit, QString buddy, QString diveMaster, QString notes)
+				  QString airtemp, QString watertemp, QString suit, QString buddy, QString diveMaster, QString weight, QString notes)
 {
 #define DROP_EMPTY_PLACEHOLDER(_s) if ((_s) == QLatin1Literal("--")) (_s).clear()
 
@@ -341,6 +341,7 @@ QString QMLManager::commitChanges(QString diveId, QString date, QString location
 	DROP_EMPTY_PLACEHOLDER(suit);
 	DROP_EMPTY_PLACEHOLDER(buddy);
 	DROP_EMPTY_PLACEHOLDER(diveMaster);
+	DROP_EMPTY_PLACEHOLDER(weight);
 	DROP_EMPTY_PLACEHOLDER(notes);
 
 #undef DROP_EMPTY_PLACEHOLDER
@@ -470,6 +471,18 @@ QString QMLManager::commitChanges(QString diveId, QString date, QString location
 			prefs.units.temperature = units::FAHRENHEIT;
 		d->watertemp.mkelvin = parseTemperatureToMkelvin(watertemp);
 	}
+	// not sure what we'd do if there was more than one weight system
+	// defined - for now just ignore that case
+	if (weightsystem_none((void *)&d->weightsystem[1])) {
+		if (get_weight_string(d->weightsystem[0].weight, true) != weight) {
+			diveChanged = true;
+			if (weight.contains(tr("kg")))
+				prefs.units.weight = units::KG;
+			else if (weight.contains(tr("lbs")))
+				prefs.units.weight = units::LBS;
+			d->weightsystem[0].weight.grams = parseWeightToGrams(weight);
+		}
+	}
 	if (!same_string(d->suit, qPrintable(suit))) {
 		diveChanged = true;
 		free(d->suit);

qt-mobile/qmlmanager.h

@@ -70,10 +70,10 @@ public slots:
 	void loadDivesWithValidCredentials();
 	void loadDiveProgress(int percent);
 	void provideAuth(QNetworkReply *reply, QAuthenticator *auth);
-	QString commitChanges(QString diveId,QString date, QString location,
+	QString commitChanges(QString diveId, QString date, QString location,
 		QString gps, QString duration, QString depth,
 		QString airtemp, QString watertemp, QString suit,
-		QString buddy, QString diveMaster, QString notes);
+		QString buddy, QString diveMaster, QString weight, QString notes);
 
 	void saveChanges();
 	QString addDive();