From 1b6ef1e0705272962784e9ed9e662ffef2aef194 Mon Sep 17 00:00:00 2001
From: "Robert C. Helling" <helling@atdotde.de>
Date: Thu, 14 May 2015 23:42:09 +0200
Subject: [PATCH 2/2] Make gaschange from contex menu act as a gaschange

so it affect no longer the previous leg but all the following ones
with the same gas (i.e. until the next gaschange).

This makes the add dive/planner behaviour more consistent
with the rest of the program regarding gas changes.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
---
 qt-ui/diveplanner.cpp | 14 +++++++++++++-
 qt-ui/diveplanner.h   |  1 +
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/qt-ui/diveplanner.cpp b/qt-ui/diveplanner.cpp
index a5fc512..c82bc04 100644
--- a/qt-ui/diveplanner.cpp
+++ b/qt-ui/diveplanner.cpp
@@ -241,7 +241,7 @@ void DiveHandler::changeGas()
 {
 	QAction *action = qobject_cast<QAction *>(sender());
 	QModelIndex index = plannerModel->index(parentIndex(), DivePlannerPointsModel::GAS);
-	plannerModel->setData(index, action->text());
+	plannerModel->gaschange(index.sibling(index.row() + 1, index.column()), action->text());
 }
 
 void DiveHandler::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
@@ -741,6 +741,18 @@ bool DivePlannerPointsModel::setData(const QModelIndex &index, const QVariant &v
 	return QAbstractItemModel::setData(index, value, role);
 }
 
+void DivePlannerPointsModel::gaschange(const QModelIndex &index, QString newgas)
+{
+	int i = index.row();
+	gasmix oldgas = divepoints[i].gasmix;
+	gasmix gas = { 0 };
+	if (!validate_gas(newgas.toUtf8().data(), &gas))
+		return;
+	while (i < plannerModel->rowCount() && gasmix_distance(&oldgas, &divepoints[i].gasmix) == 0)
+		divepoints[i++].gasmix = gas;
+	emit dataChanged(createIndex(0, 0), createIndex(rowCount() - 1, COLUMNS - 1));
+}
+
 QVariant DivePlannerPointsModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
 	if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
diff --git a/qt-ui/diveplanner.h b/qt-ui/diveplanner.h
index 988c908..42e0dc4 100644
--- a/qt-ui/diveplanner.h
+++ b/qt-ui/diveplanner.h
@@ -35,6 +35,7 @@ public:
 	virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
 	virtual bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
 	virtual Qt::ItemFlags flags(const QModelIndex &index) const;
+	void gaschange(const QModelIndex &index, QString newgas);
 	void removeSelectedPoints(const QVector<int> &rows);
 	void setPlanMode(Mode mode);
 	bool isPlanner();
-- 
1.9.5 (Apple Git-50.3)