ui, logic: design for license ui and forcing the user to enter a key on first open

This change integrates the license key ui into the application and makes it necessary for the user to enter a correct
key. The check for a correct key is done on startup and whenever a project is loaded. The check for the key also
includes a check whether the location of the application has changed.

src/lib/Application.cpp

@@ -111,6 +111,11 @@ void Application::saveProject(const FilePath& projectSettingsFilePath)
 	}
 }
 
+void Application::showLicenseScreen()
+{
+	m_mainView->showLicenseScreen();
+}
+
 void Application::setAppSettingsPath(const std::string& appSettingsPath)
 {
 	m_appSettingsPath = appSettingsPath;

src/lib/Application.h

@@ -35,6 +35,7 @@ public:
 	void loadProject(const FilePath& projectSettingsFilePath, bool forceRefresh);
 	void refreshProject();
 	void saveProject(const FilePath& projectSettingsFilePath);
+	void showLicenseScreen();
 
 	static void setAppSettingsPath(const std::string& appSettingsPath);
 

src/lib/component/view/MainView.h

@@ -16,6 +16,7 @@ public:
 	virtual void setTitle(const std::string& title) = 0;
 	virtual void activateWindow() = 0;
 	virtual void updateRecentProjectMenu() = 0;
+	virtual void showLicenseScreen() = 0;
 };
 
 #endif // MAIN_VIEW_H

src/lib/settings/ApplicationSettings.cpp

@@ -163,20 +163,20 @@ int ApplicationSettings::getControlsMouseForwardButton() const
 
 std::string ApplicationSettings::getLicenseString() const
 {
-	return getValue<std::string>("application/license/license:", "");
+	return getValue<std::string>("user/license/license", "");
 }
 
 std::string ApplicationSettings::getLicenseCheck() const
 {
-	return getValue<std::string>("application/license/check", "");
+	return getValue<std::string>("user/license/check", "");
 }
 
 void ApplicationSettings::setLicenseString(const std::string& licenseString)
 {
-	setValue<std::string>("application/license/license", licenseString);
+	setValue<std::string>("user/license/license", licenseString);
 }
 
 void ApplicationSettings::setLicenseCheck(const std::string& hash)
 {
-	setValue<std::string>("application/license/check", hash);
+	setValue<std::string>("user/license/check", hash);
 }

src/lib/utility/messaging/MessageBase.h

@@ -19,6 +19,7 @@ public:
 		: undoRedoType(UNDOTYPE_NORMAL)
 		, m_sendAsTask(true)
 		, m_keepContent(false)
+		, m_cancelled(false)
 	{
 	}
 
@@ -59,6 +60,16 @@ public:
 		return m_keepContent;
 	}
 
+	void cancel()
+	{
+		m_cancelled = true;
+	}
+
+	bool cancelled()
+	{
+		return m_cancelled;
+	}
+
 	virtual void print(std::ostream& os) const = 0;
 
 	std::string str() const
@@ -74,6 +85,7 @@ public:
 private:
 	bool m_sendAsTask;
 	bool m_keepContent;
+	bool m_cancelled;
 };
 
 #endif // MESSAGE_BASE_H

src/lib/utility/messaging/MessageQueue.cpp

@@ -241,6 +241,11 @@ void MessageQueue::sendMessage(std::shared_ptr<MessageBase> message)
 			listener->handleMessageBase(message.get());
 			m_listenersMutex.lock();
 		}
+
+		if (message->cancelled())
+		{
+			break;
+		}
 	}
 }
 
@@ -260,7 +265,7 @@ void MessageQueue::sendMessageAsTask(std::shared_ptr<MessageBase> message, bool
 				[listenerId, message]()
 				{
 					MessageListenerBase* listener = MessageQueue::getInstance()->getListenerById(listenerId);
-					if (listener)
+					if (listener && !message->cancelled())
 					{
 						listener->handleMessageBase(message.get());
 					}