Add warning when record button pressed without record node in signal chain

Author: oepavel

Source/Processors/ProcessorGraph/ProcessorGraph.cpp

@@ -194,6 +194,22 @@ void ProcessorGraph::restoreParameters()
 
 }
 
+bool ProcessorGraph::hasRecordNode()
+{
+    
+    Array<GenericProcessor*> processors = getListOfProcessors();
+    
+    for (auto p : processors)
+    {
+        if (p->isRecordNode())
+        {
+            return true;
+        }
+    }
+    return false;
+    
+}
+
 Array<GenericProcessor*> ProcessorGraph::getListOfProcessors()
 {
 
@@ -633,7 +649,7 @@ bool ProcessorGraph::enableProcessors()
 
     bool allClear;
 
-    if (getNumNodes() < 5)
+    if (getNumNodes() < 4)
     {
         std::cout << "Not enough processors in signal chain to acquire data" << std::endl;
         AccessClass::getUIComponent()->disableCallbacks();

Source/Processors/ProcessorGraph/ProcessorGraph.h

@@ -69,6 +69,8 @@ class ProcessorGraph    : public AudioProcessorGraph
     Array<RecordNode*> getRecordNodes();
     AudioNode* getAudioNode();
     MessageCenter* getMessageCenter();
+    
+    bool hasRecordNode();
 
     void updateConnections(Array<SignalChainTabButton*, CriticalSection>);
 

Source/UI/ControlPanel.cpp

@@ -911,6 +911,14 @@ void ControlPanel::buttonClicked(Button* button)
     {
         if (recordButton->getToggleState())
         {
+            
+            if (!graph->hasRecordNode())
+            {
+                CoreServices::sendStatusMessage("Please insert at least one Record Node to start recording!");
+                recordButton->setToggleState(false, dontSendNotification);
+                return;
+            }
+            
             if (playButton->getToggleState())
             {
                 startRecording();