From fef4ce2b39b1a00609122fe37e2378be2fa9319f Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 1 Apr 2021 16:46:05 -0400
Subject: Fix deleting connected ports in subgraphs

---
 src/server/events/Delete.cpp        |  2 +-
 src/server/events/DisconnectAll.cpp | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

(limited to 'src/server/events')

diff --git a/src/server/events/Delete.cpp b/src/server/events/Delete.cpp
index cd045820..7b284902 100644
--- a/src/server/events/Delete.cpp
+++ b/src/server/events/Delete.cpp
@@ -166,7 +166,7 @@ Delete::execute(RunContext& ctx)
 	}
 
 	GraphImpl* parent = _block ? _block->parent_graph() : nullptr;
-	if (_port) {
+	if (_ports_array && _port) {
 		// Adjust port indices if necessary
 		for (size_t i = 0; i < _ports_array->size(); ++i) {
 			PortImpl* const port = _ports_array->at(i);
diff --git a/src/server/events/DisconnectAll.cpp b/src/server/events/DisconnectAll.cpp
index 0442ddd9..35254ba0 100644
--- a/src/server/events/DisconnectAll.cpp
+++ b/src/server/events/DisconnectAll.cpp
@@ -122,6 +122,18 @@ DisconnectAll::pre_process(PreProcessContext& ctx)
 			                     dynamic_cast<InputPort*>(a->head())));
 	}
 
+	// Create disconnect events to erase adjacent arcs in parent's parent
+	if (_port && _parent->parent()) {
+		GraphImpl* parent_parent = dynamic_cast<GraphImpl*>(_parent->parent());
+		for (const auto& a : adjacent_arcs(parent_parent)) {
+			_impls.push_back(
+				new Disconnect::Impl(_engine,
+				                     parent_parent,
+				                     dynamic_cast<PortImpl*>(a->tail()),
+				                     dynamic_cast<InputPort*>(a->head())));
+		}
+	}
+
 	if (!_deleting && ctx.must_compile(*_parent)) {
 		if (!(_compiled_graph = compile(*_engine.maid(), *_parent))) {
 			return Event::pre_process_done(Status::COMPILATION_FAILED);
-- 
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