From d08b526930bb01f038770f7ca116f9eb16fca686 Mon Sep 17 00:00:00 2001
From: reuk <reuk@users.noreply.github.com>
Date: Tue, 23 Mar 2021 13:00:25 +0000
Subject: [PATCH] AudioProcessor:  Fix default behaviour of updateHostDisplay

This patch fixes an issue where calling `updateHostDisplay` with no
argument would have no effect.
---
 .../juce_audio_processors/processors/juce_AudioProcessor.h | 4 +++-
 .../processors/juce_AudioProcessorListener.h               | 7 +++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/modules/juce_audio_processors/processors/juce_AudioProcessor.h b/modules/juce_audio_processors/processors/juce_AudioProcessor.h
index 39eac82112..fb7cb3806e 100644
--- a/modules/juce_audio_processors/processors/juce_AudioProcessor.h
+++ b/modules/juce_audio_processors/processors/juce_AudioProcessor.h
@@ -78,6 +78,8 @@ public:
         doublePrecision
     };
 
+    using ChangeDetails = AudioProcessorListener::ChangeDetails;
+
     //==============================================================================
     /** Destructor. */
     virtual ~AudioProcessor();
@@ -991,7 +993,7 @@ public:
         It sends a hint to the host that something like the program, number of parameters,
         etc, has changed, and that it should update itself.
     */
-    void updateHostDisplay (const AudioProcessorListener::ChangeDetails& details = {});
+    void updateHostDisplay (const ChangeDetails& details = ChangeDetails::getAllChanged());
 
     //==============================================================================
     /** Adds a parameter to the AudioProcessor.
diff --git a/modules/juce_audio_processors/processors/juce_AudioProcessorListener.h b/modules/juce_audio_processors/processors/juce_AudioProcessorListener.h
index 9a83d06c83..ad9070dffd 100644
--- a/modules/juce_audio_processors/processors/juce_AudioProcessorListener.h
+++ b/modules/juce_audio_processors/processors/juce_AudioProcessorListener.h
@@ -69,6 +69,13 @@ public:
         ChangeDetails withParameterInfoChanged (bool b) const noexcept { return with (&ChangeDetails::parameterInfoChanged, b); }
         ChangeDetails withProgramChanged       (bool b) const noexcept { return with (&ChangeDetails::programChanged,       b); }
 
+        static ChangeDetails getAllChanged()
+        {
+            return ChangeDetails{}.withLatencyChanged (true)
+                                  .withParameterInfoChanged (true)
+                                  .withProgramChanged (true);
+        }
+
     private:
         template <typename Member, typename Value>
         ChangeDetails with (Member&& member, Value&& value) const noexcept