From cc8d62af149323752ed6a6ea0fb3b6b7407ea77b Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sat, 29 Sep 2018 18:48:05 +0200
Subject: Remove all channel map ids if in use when deleting a channel.

---
 src/mainwindow.cc | 38 ++++++++++++++++++++++++++++----------
 1 file changed, 28 insertions(+), 10 deletions(-)

diff --git a/src/mainwindow.cc b/src/mainwindow.cc
index 4084df1..ad13975 100644
--- a/src/mainwindow.cc
+++ b/src/mainwindow.cc
@@ -148,13 +148,6 @@ MainWindow::MainWindow(Settings& settings)
 		channel_list = new QListWidget();
 		connect(channel_list, SIGNAL(itemDoubleClicked(QListWidgetItem*)),
 		        this, SLOT(channelDoubleClicked(QListWidgetItem*)));
-//		channel_list->addItems({"AmbL", "AmbR", "Kdrum_back", "Kdrum_front",
-//		                        "Hihat", "OHL", "OHR", "Ride","Snare_bottom",
-//		                        "Snare_top", "Tom1", "Tom2", "Tom3"});
-//		for(int i = 0; i < channel_list->count(); ++i)
-//		{
-//			channel_list->item(i)->setIcon(QPixmap(":icons/channel.png"));
-//		}
 
 		l->addWidget(tools);
 		l->addWidget(channel_list);
@@ -222,9 +215,8 @@ void MainWindow::removeInstrument()
 	int ret =
 		QMessageBox::question(this, tr("Delete Instrument"),
 		                      tr("Are you sure you want to delete the selected "
-		                         "instrument?"),
-		                      QMessageBox::Yes | QMessageBox::No |
-		                      QMessageBox::Cancel);
+		                         "instrument(s)?"),
+		                      QMessageBox::Yes | QMessageBox::Cancel);
 	if(ret != QMessageBox::Yes)
 	{
 		return;
@@ -289,10 +281,36 @@ void MainWindow::addChannel()
 
 void MainWindow::removeChannel()
 {
+	int ret =
+		QMessageBox::question(this, tr("Delete Channel"),
+		                      tr("Are you sure you want to delete the selected "
+		                         "channel(s)?"),
+		                      QMessageBox::Yes | QMessageBox::Cancel);
+	if(ret != QMessageBox::Yes)
+	{
+		return;
+	}
+
 	auto items = channel_list->selectedItems();
 	for(auto item : items)
 	{
 		auto id = item->data(Qt::UserRole).toInt();
+
+		auto instrument_ids = project.getInstrumentList();
+		for(auto instrument_id : instrument_ids)
+		{
+			auto& instrument = project.getInstrument(instrument_id);
+			auto audiofile_ids = instrument.getAudioFileList();
+			for(auto audiofile_id : audiofile_ids)
+			{
+				auto& audiofile = instrument.getAudioFile(audiofile_id);
+				if(audiofile.getChannelMapId() == id)
+				{
+					audiofile.setChannelMapId(-1); // Unset channel map
+				}
+			}
+		}
+
 		project.deleteChannel(id);
 		delete item;
 	}
-- 
cgit v1.2.3