Add ability to replan a dive that we planned before

When doing this, all waypoints of the calculated ascent are now waypoints
in the plan - so the user has to remove the ascent part of the dive in
order to really replan the dive. That's a pain, but we don't keep the data
around that would tell us which waypoints are user input and which ones
were calculated.

Fixes #527

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

qt-ui/diveplanner.cpp

@@ -1155,7 +1155,9 @@ void DivePlannerPointsModel::createPlan()
 
 	//TODO: C-based function here?
 	plan(&diveplan, &cache, isPlanner(), true);
-	record_dive(clone_dive(&displayed_dive));
+	if (!current_dive || displayed_dive.id != current_dive->id)
+		// we were planning a new dive, not re-planning an existing on
+		record_dive(clone_dive(&displayed_dive));
 	mark_divelist_changed(true);
 
 	// Remove and clean the diveplan, so we don't delete

qt-ui/mainwindow.cpp

@@ -404,11 +404,13 @@ void MainWindow::planCanceled()
 void MainWindow::planCreated()
 {
 	// get the new dive selected and assign a number if reasonable
-	dive_list()->unselectDives();
+	if (displayed_dive.id == 0) {
-	select_dive(dive_table.nr - 1);
+		// we might have added a new dive (so displayed_dive was cleared out by clone_dive()
-	dive_list()->selectDive(selected_dive);
+		dive_list()->unselectDives();
-	set_dive_nr_for_current_dive();
+		select_dive(dive_table.nr - 1);
-
+		dive_list()->selectDive(selected_dive);
+		set_dive_nr_for_current_dive();
+	}
 	showProfile();
 	refreshDisplay();
 }
@@ -448,9 +450,32 @@ void MainWindow::setupForAddAndPlan(const char *model)
 	DivePlannerPointsModel::instance()->setupCylinders();
 }
 
+void MainWindow::on_actionReplanDive_triggered()
+{
+	if (!plannerStateClean())
+		return;
+	if (!current_dive || strcmp(current_dive->dc.model, "planned dive")) {
+		qDebug() << current_dive->dc.model;
+		return;
+	}
+	ui.ListWidget->endSearch();
+	// put us in PLAN mode
+	DivePlannerPointsModel::instance()->setPlanMode(DivePlannerPointsModel::PLAN);
+
+	ui.newProfile->setPlanState();
+	ui.infoPane->setCurrentIndex(PLANNERWIDGET);
+	DivePlannerPointsModel::instance()->loadFromDive(current_dive);
+	reset_cylinders(&displayed_dive, true);
+	ui.diveListPane->setCurrentIndex(1); // switch to the plan output
+	ui.globePane->setCurrentIndex(1);
+#ifdef NO_MARBLE
+	ui.globePane->show();
+#endif
+}
+
 void MainWindow::on_actionDivePlanner_triggered()
 {
-	if(!plannerStateClean())
+	if (!plannerStateClean())
 		return;
 
 	ui.ListWidget->endSearch();

qt-ui/mainwindow.h

@@ -118,6 +118,7 @@ slots:
 	void on_actionAboutSubsurface_triggered();
 	void on_actionUserManual_triggered();
 	void on_actionDivePlanner_triggered();
+	void on_actionReplanDive_triggered();
 	void on_action_Check_for_Updates_triggered();
 
 	void current_dive_changed(int divenr);

qt-ui/mainwindow.ui

@@ -722,6 +722,7 @@ p, li { white-space: pre-wrap; }
     </property>
     <addaction name="actionAddDive"/>
     <addaction name="actionDivePlanner"/>
+    <addaction name="actionReplanDive"/>
     <addaction name="copy"/>
     <addaction name="paste"/>
     <addaction name="separator"/>
@@ -1074,6 +1075,11 @@ p, li { white-space: pre-wrap; }
     <string>Configure Dive Computer</string>
    </property>
   </action>
+  <action name="actionReplanDive">
+   <property name="text">
+    <string>Re-plan dive</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>