Add message when the Lua console is empty

Resources/svg/pause.svg

@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 3H5C3.9 3 3 3.9 3 5V19C3 20.1 3.9 21 5 21H19C20.1 21 21 20.1 21 19V5C21 3.9 20.1 3 19 3M19 19H5V5H19V19M13 16V8H15V16H13M9 16V8H11V16H9" /></svg>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13,16V8H15V16H13M9,16V8H11V16H9M12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2M12,4A8,8 0 0,0 4,12A8,8 0 0,0 12,20A8,8 0 0,0 20,12A8,8 0 0,0 12,4Z" /></svg>

Source/components/LuaConsole.cpp

@@ -18,10 +18,13 @@ LuaConsole::LuaConsole() {
 	addAndMakeVisible(console);
 	addAndMakeVisible(clearConsoleButton);
 	addAndMakeVisible(pauseConsoleButton);
+	addAndMakeVisible(emptyConsoleLabel);
 
 	pauseConsoleButton.onClick = [this] {
         console.setScrollbarThickness(pauseConsoleButton.getToggleState() ? 10 : 0);
     };
+
+	emptyConsoleLabel.setJustificationType(juce::Justification::centred);
 }
 
 LuaConsole::~LuaConsole() {}
@@ -42,6 +45,11 @@ void LuaConsole::clear() {
 	document.clearUndoHistory();
 	consoleLines = 0;
 	buffer.clear();
+
+	juce::MessageManager::callAsync([this] {
+        console.setVisible(false);
+        emptyConsoleLabel.setVisible(true);
+    });
 }
 
 void LuaConsole::timerCallback() {
@@ -62,6 +70,11 @@ void LuaConsole::timerCallback() {
 		console.moveCaretToTop(false);
 		console.moveCaretToEnd(false);
 		console.scrollDown();
+
+		if (consoleLines > 0) {
+            console.setVisible(true);
+            emptyConsoleLabel.setVisible(false);
+        }
 	}
 }
 
@@ -81,6 +94,7 @@ void LuaConsole::resized() {
 	auto topBar = getLocalBounds().removeFromTop(30);
 	auto area = getLocalBounds().withTrimmedTop(30);
 	console.setBounds(area);
+	emptyConsoleLabel.setBounds(area);
 
 	clearConsoleButton.setBounds(topBar.removeFromRight(30).withSizeKeepingCentre(20, 20));
 	pauseConsoleButton.setBounds(topBar.removeFromRight(30).withSizeKeepingCentre(20, 20));

Source/components/LuaConsole.h

@@ -24,6 +24,7 @@ private:
     std::string buffer;
     juce::CodeDocument document;
     juce::CodeEditorComponent console = { document, nullptr };
+    juce::Label emptyConsoleLabel = { "emptyConsoleLabel", "Console is empty" };
     int consoleLines = 0;
 
     SvgButton clearConsoleButton { "clearConsole", juce::String(BinaryData::delete_svg), juce::Colours::red };