diff --git a/bin/app/data/src/main.cpp b/bin/app/data/src/main.cpp
index 04f24455..20d59a79 100644
--- a/bin/app/data/src/main.cpp
+++ b/bin/app/data/src/main.cpp
@@ -1,7 +1,15 @@
+int main();
+void foo();
+
 int main()
 {
 	int a = 6;
 	int b = 7;
 	int c = a * b;
 	return 0;
+}
+
+void foo()
+{
+	std::string foo = "bar";
 }
\ No newline at end of file
diff --git a/src/app/qt/utility/QtThreadedFunctor.h b/src/app/qt/utility/QtThreadedFunctor.h
index 0fe5ec23..7b275a97 100644
--- a/src/app/qt/utility/QtThreadedFunctor.h
+++ b/src/app/qt/utility/QtThreadedFunctor.h
@@ -3,6 +3,7 @@
 
 #include <functional>
 #include <QObject>
+#include <QSemaphore>
 
 class QtThreadedFunctorHelper: public QObject
 {
@@ -15,22 +16,26 @@ private slots:
 	void execute()
 	{
 		m_callback();
+		m_freeCallbacks.release();
 	}
 
 public:
 	QtThreadedFunctorHelper()
+		: m_freeCallbacks(1)
 	{
 		QObject::connect(this, SIGNAL(signalExecution()), this, SLOT(execute()));
 	}
 
 	void operator()(std::function<void(void)> callback)
 	{
+		m_freeCallbacks.acquire();
 		m_callback = callback;
 		signalExecution();
 	}
 
 private:
 	std::function<void(void)> m_callback;
+	QSemaphore m_freeCallbacks;
 };
 
 template <typename T1 = void, typename T2 = void, typename T3 = void>
diff --git a/src/app/qt/view/QtCodeView.cpp b/src/app/qt/view/QtCodeView.cpp
index 55041f57..1c6e2f70 100644
--- a/src/app/qt/view/QtCodeView.cpp
+++ b/src/app/qt/view/QtCodeView.cpp
@@ -8,6 +8,7 @@
 #include "qt/QtWidgetWrapper.h"
 #include "qt/utility/QtHighLighter.h"
 #include "qt/utility/utilityQt.h"
+#include "utility/messaging/type/MessageActivateToken.h"
 
 QtCodeView::QtCodeView(ViewLayout* viewLayout)
 	: CodeView(viewLayout)
@@ -52,7 +53,8 @@ void QtCodeView::clearCodeSnippets()
 
 void QtCodeView::activateToken(Id tokenId) const
 {
-	std::cout << "TODO: activate Token: " << tokenId << std::endl;
+	MessageActivateToken message(tokenId);
+	message.dispatch();
 }
 
 void QtCodeView::doAddCodeSnippet(const std::string& str, const TokenLocationFile& locationFile, int startLineNumber)
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index adf2cdde..e5cf7798 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -108,7 +108,7 @@ add_files(
 	utility/math/Vector4.h
 	utility/math/VectorBase.h
 
-	utility/messaging/type/MessageActivateTokenLocation.h
+	utility/messaging/type/MessageActivateToken.h
 	
 	utility/messaging/Message.h
 	utility/messaging/MessageBase.h
diff --git a/src/lib/Project.cpp b/src/lib/Project.cpp
index aebad895..03f96826 100644
--- a/src/lib/Project.cpp
+++ b/src/lib/Project.cpp
@@ -5,7 +5,7 @@
 
 #include "data/parser/cxx/CxxParser.h"
 #include "utility/FileSystem.h"
-#include "utility/messaging/type/MessageActivateTokenLocation.h"
+#include "utility/messaging/type/MessageActivateToken.h"
 #include "utility/logging/logging.h"
 
 std::shared_ptr<Project> Project::create(
@@ -46,7 +46,7 @@ void Project::parseCode()
 		m_storage->logGraph();
 		m_storage->logLocations();
 
-		MessageActivateTokenLocation message;
+		MessageActivateToken message(1);
 		message.dispatch();
 	}
 }
diff --git a/src/lib/component/controller/CodeController.cpp b/src/lib/component/controller/CodeController.cpp
index ab983f16..22053c64 100644
--- a/src/lib/component/controller/CodeController.cpp
+++ b/src/lib/component/controller/CodeController.cpp
@@ -3,6 +3,8 @@
 #include "component/view/CodeView.h"
 #include "data/access/LocationAccess.h"
 #include "data/location/TokenLocation.h"
+#include "data/location/TokenLocationCollection.h"
+#include "data/location/TokenLocationFile.h"
 #include "utility/text/TextAccess.h"
 
 #include "utility/logging/logging.h"
@@ -17,20 +19,39 @@ CodeController::~CodeController()
 {
 }
 
-void CodeController::setActiveTokenLocationId(Id id)
+void CodeController::setActiveTokenId(Id id)
 {
-	TokenLocation* tokenLocation = m_locationAccess->getTokenLocation(id);
-	if (tokenLocation)
-	{
-		getView()->clearCodeSnippets();
-		std::shared_ptr<TextAccess> textAccess = TextAccess::createFromFile(tokenLocation->getFilePath());
-		// getView()->addCodeSnippet(textAccess->getText());
-	}
+	const unsigned int lineRadius = 2;
+
+	getView()->clearCodeSnippets();
+
+	TokenLocationCollection collection = m_locationAccess->getTokenLocationsForTokenId(id);
+	collection.forEachTokenLocation([&] (TokenLocation* tokenLocation) -> void {
+		if (tokenLocation->isStartTokenLocation())
+		{
+			const std::string filePath = tokenLocation->getFilePath();
+			std::shared_ptr<TextAccess> textAccess = TextAccess::createFromFile(filePath);
+
+			unsigned int firstLineNumber = std::max<int>(1, tokenLocation->getLineNumber() - lineRadius);
+			unsigned int lastLineNumber = std::min<int>(
+				textAccess->getLineCount(), tokenLocation->getEndTokenLocation()->getLineNumber() + lineRadius
+			);
+
+			std::string text;
+			for (std::string line: textAccess->getLines(firstLineNumber, lastLineNumber))
+			{
+				text += line;
+			}
+
+			TokenLocationFile tokenLocationFile = m_locationAccess->getTokenLocationsForLinesInFile(filePath, firstLineNumber, lastLineNumber);
+			getView()->addCodeSnippet(text, tokenLocationFile, firstLineNumber);
+		}
+	});
 }
 
-void CodeController::handleMessage(MessageActivateTokenLocation* message)
+void CodeController::handleMessage(MessageActivateToken* message)
 {
-	setActiveTokenLocationId(1);
+	setActiveTokenId(message->tokenId);
 }
 
 CodeView* CodeController::getView()
diff --git a/src/lib/component/controller/CodeController.h b/src/lib/component/controller/CodeController.h
index 7c6040c9..8c0b40d9 100644
--- a/src/lib/component/controller/CodeController.h
+++ b/src/lib/component/controller/CodeController.h
@@ -5,7 +5,7 @@
 
 #include "component/controller/Controller.h"
 #include "utility/messaging/MessageListener.h"
-#include "utility/messaging/type/MessageActivateTokenLocation.h"
+#include "utility/messaging/type/MessageActivateToken.h"
 #include "utility/types.h"
 
 class CodeView;
@@ -17,16 +17,16 @@ struct AnnotatedText
 	Id tokenId;
 };
 
-class CodeController: public Controller, public MessageListener<MessageActivateTokenLocation>
+class CodeController: public Controller, public MessageListener<MessageActivateToken>
 {
 public:
 	CodeController(std::shared_ptr<LocationAccess> locationAccess);
 	~CodeController();
 
-	void setActiveTokenLocationId(Id id);
+	void setActiveTokenId(Id id);
 
 private:
-	virtual void handleMessage(MessageActivateTokenLocation* message);
+	virtual void handleMessage(MessageActivateToken* message);
 	CodeView* getView();
 
 	std::shared_ptr<LocationAccess> m_locationAccess;
diff --git a/src/lib/data/Storage.cpp b/src/lib/data/Storage.cpp
index 6af6bd8f..53040772 100644
--- a/src/lib/data/Storage.cpp
+++ b/src/lib/data/Storage.cpp
@@ -3,6 +3,8 @@
 #include <sstream>
 
 #include "data/location/TokenLocation.h"
+#include "data/location/TokenLocationFile.h"
+#include "data/location/TokenLocationLine.h"
 #include "data/parser/ParseLocation.h"
 #include "data/parser/ParseVariable.h"
 #include "utility/logging/logging.h"
@@ -173,14 +175,59 @@ void Storage::logLocations() const
 	LOG_INFO(str.str());
 }
 
-Token* Storage::getToken(Id tokenId)
+Token* Storage::getToken(Id tokenId) const
 {
-	return m_graph.getTokenById(tokenId);
+	return m_graph.getTokenById(tokenId); // Todo: copy information.
 }
 
-TokenLocation* Storage::getTokenLocation(Id locationId)
+TokenLocationCollection Storage::getTokenLocationsForTokenId(Id id) const
 {
-	return m_locationCollection.findTokenLocationById(locationId);
+	TokenLocationCollection ret;
+
+	std::vector<Id> locationIds = m_graph.getTokenById(id)->getLocationIds();
+	for (Id locationId: locationIds)
+	{
+		TokenLocation* location = m_locationCollection.findTokenLocationById(locationId);
+		if (location->getOtherTokenLocation())
+		{
+			ret.addTokenLocationAsPlainCopy(location);
+			ret.addTokenLocationAsPlainCopy(location->getOtherTokenLocation());
+		}
+	}
+
+	return ret;
+}
+
+TokenLocationFile Storage::getTokenLocationsForLinesInFile(
+		const std::string& fileName, unsigned int firstLineNumber, unsigned int lastLineNumber
+) const
+{
+	TokenLocationFile ret(fileName);
+
+	TokenLocationFile* locationFile = m_locationCollection.findTokenLocationFileByPath(fileName);
+	if (locationFile)
+	{
+		for (unsigned int i = firstLineNumber; i <= lastLineNumber; i++)
+		{
+			TokenLocationLine* locationLine = locationFile->findTokenLocationLineByNumber(i);
+			if (locationLine)
+			{
+				locationLine->forEachTokenLocation([&] (TokenLocation* tokenLocation) -> void {
+					if (tokenLocation->getOtherTokenLocation() &&
+						tokenLocation->isStartTokenLocation() &&
+						tokenLocation->getLineNumber() >= firstLineNumber &&
+						tokenLocation->getOtherTokenLocation()->isEndTokenLocation() &&
+						tokenLocation->getOtherTokenLocation()->getLineNumber() <= lastLineNumber)
+					{
+						ret.addTokenLocationAsPlainCopy(tokenLocation);
+						ret.addTokenLocationAsPlainCopy(tokenLocation->getOtherTokenLocation());
+					}
+				});
+			}
+		}
+	}
+
+	return ret;
 }
 
 Edge::AccessType Storage::convertAccessType(ParserClient::AccessType access) const
diff --git a/src/lib/data/Storage.h b/src/lib/data/Storage.h
index 6cb61c84..65533277 100644
--- a/src/lib/data/Storage.h
+++ b/src/lib/data/Storage.h
@@ -10,7 +10,10 @@
 #include "data/location/TokenLocationCollection.h"
 #include "data/parser/ParserClient.h"
 
-class Storage: public ParserClient, public GraphAccess, public LocationAccess
+class Storage
+	: public ParserClient
+	, public GraphAccess
+	, public LocationAccess
 {
 public:
 	Storage();
@@ -42,8 +45,12 @@ public:
 	void logGraph() const;
 	void logLocations() const;
 
-	virtual Token* getToken(Id tokenId);
-	virtual TokenLocation* getTokenLocation(Id locationId);
+	virtual Token* getToken(Id tokenId) const;
+
+	virtual TokenLocationCollection getTokenLocationsForTokenId(Id locationId) const;
+	virtual TokenLocationFile getTokenLocationsForLinesInFile(
+		const std::string& fileName, unsigned int firstLineNumber, unsigned int lastLineNumber
+	) const;
 
 private:
 	Edge::AccessType convertAccessType(ParserClient::AccessType access) const;
diff --git a/src/lib/data/access/GraphAccess.h b/src/lib/data/access/GraphAccess.h
index dea85aae..6c3d35bc 100644
--- a/src/lib/data/access/GraphAccess.h
+++ b/src/lib/data/access/GraphAccess.h
@@ -10,7 +10,7 @@ class GraphAccess
 public:
 	virtual ~GraphAccess();
 
-	virtual Token* getToken(Id tokenId) = 0;
+	virtual Token* getToken(Id tokenId) const = 0;
 };
 
 
diff --git a/src/lib/data/access/LocationAccess.h b/src/lib/data/access/LocationAccess.h
index 91c316cc..c7f2f736 100644
--- a/src/lib/data/access/LocationAccess.h
+++ b/src/lib/data/access/LocationAccess.h
@@ -1,16 +1,21 @@
 #ifndef LOCATION_ACCESS_H
 #define LOCATION_ACCESS_H
 
+#include <string>
+
 #include "utility/types.h"
 
-class TokenLocation;
+class TokenLocationCollection;
+class TokenLocationFile;
 
 class LocationAccess
 {
 public:
 	virtual ~LocationAccess();
-	virtual TokenLocation* getTokenLocation(Id locationId) = 0;
-
+	virtual TokenLocationCollection getTokenLocationsForTokenId(Id id) const = 0;
+	virtual TokenLocationFile getTokenLocationsForLinesInFile(
+		const std::string& fileName, unsigned int firstLineNumber, unsigned int lastLineNumber
+	) const = 0;
 };
 
 
diff --git a/src/lib/data/location/TokenLocationCollection.cpp b/src/lib/data/location/TokenLocationCollection.cpp
index fea44849..a83c63b3 100644
--- a/src/lib/data/location/TokenLocationCollection.cpp
+++ b/src/lib/data/location/TokenLocationCollection.cpp
@@ -103,6 +103,22 @@ void TokenLocationCollection::forEachTokenLocationFile(std::function<void(TokenL
 	}
 }
 
+void TokenLocationCollection::forEachTokenLocationLine(std::function<void(TokenLocationLine*)> func) const
+{
+	for (const TokenLocationFilePairType& file : m_files)
+	{
+		file.second->forEachTokenLocationLine(func);
+	}
+}
+
+void TokenLocationCollection::forEachTokenLocation(std::function<void(TokenLocation*)> func) const
+{
+	for (const TokenLocationFilePairType& file : m_files)
+	{
+		file.second->forEachTokenLocation(func);
+	}
+}
+
 TokenLocation* TokenLocationCollection::addTokenLocationAsPlainCopy(const TokenLocation* location)
 {
 	const std::string& filePath = location->getTokenLocationLine()->getTokenLocationFile()->getFilePath();
diff --git a/src/lib/data/location/TokenLocationCollection.h b/src/lib/data/location/TokenLocationCollection.h
index 84211388..d498b150 100644
--- a/src/lib/data/location/TokenLocationCollection.h
+++ b/src/lib/data/location/TokenLocationCollection.h
@@ -11,6 +11,7 @@
 
 class TokenLocation;
 class TokenLocationFile;
+class TokenLocationLine;
 
 class TokenLocationCollection
 {
@@ -37,6 +38,8 @@ public:
 	TokenLocationFile* findTokenLocationFileByPath(const std::string& filePath) const;
 
 	void forEachTokenLocationFile(std::function<void(TokenLocationFile*)> func) const;
+	void forEachTokenLocationLine(std::function<void(TokenLocationLine*)> func) const;
+	void forEachTokenLocation(std::function<void(TokenLocation*)> func) const;
 
 	TokenLocation* addTokenLocationAsPlainCopy(const TokenLocation* location);
 
diff --git a/src/lib/data/location/TokenLocationFile.cpp b/src/lib/data/location/TokenLocationFile.cpp
index e8d98bc6..ebe24d23 100644
--- a/src/lib/data/location/TokenLocationFile.cpp
+++ b/src/lib/data/location/TokenLocationFile.cpp
@@ -66,6 +66,11 @@ void TokenLocationFile::removeTokenLocation(TokenLocation* location)
 	}
 }
 
+TokenLocationLine* TokenLocationFile::findTokenLocationLineByNumber(unsigned int lineNumber) const
+{
+	return findTokenLocationLine(lineNumber);
+}
+
 void TokenLocationFile::forEachTokenLocationLine(std::function<void(TokenLocationLine*)> func) const
 {
 	for (const TokenLocationLinePairType& line : m_lines)
@@ -74,6 +79,14 @@ void TokenLocationFile::forEachTokenLocationLine(std::function<void(TokenLocatio
 	}
 }
 
+void TokenLocationFile::forEachTokenLocation(std::function<void(TokenLocation*)> func) const
+{
+	for (const TokenLocationLinePairType& line : m_lines)
+	{
+		line.second->forEachTokenLocation(func);
+	}
+}
+
 TokenLocation* TokenLocationFile::addTokenLocationAsPlainCopy(const TokenLocation* location)
 {
 	unsigned int lineNumber = location->getTokenLocationLine()->getLineNumber();
diff --git a/src/lib/data/location/TokenLocationFile.h b/src/lib/data/location/TokenLocationFile.h
index dd7cb09b..5757483c 100644
--- a/src/lib/data/location/TokenLocationFile.h
+++ b/src/lib/data/location/TokenLocationFile.h
@@ -32,7 +32,10 @@ public:
 		unsigned int endLineNumber, unsigned int endColumnNumber);
 	void removeTokenLocation(TokenLocation* location);
 
+	TokenLocationLine* findTokenLocationLineByNumber(unsigned int lineNumber) const;
+
 	void forEachTokenLocationLine(std::function<void(TokenLocationLine*)> func) const;
+	void forEachTokenLocation(std::function<void(TokenLocation*)> func) const;
 
 	TokenLocation* addTokenLocationAsPlainCopy(const TokenLocation* location);
 
diff --git a/src/lib/utility/messaging/type/MessageActivateToken.h b/src/lib/utility/messaging/type/MessageActivateToken.h
new file mode 100644
index 00000000..1f4c9e98
--- /dev/null
+++ b/src/lib/utility/messaging/type/MessageActivateToken.h
@@ -0,0 +1,24 @@
+#ifndef MESSAGE_ACTIVATE_TOKEN_H
+#define MESSAGE_ACTIVATE_TOKEN_H
+
+#include "utility/messaging/Message.h"
+#include "utility/types.h"
+
+class MessageActivateToken: public Message<MessageActivateToken>
+{
+public:
+	MessageActivateToken(Id tokenId)
+		: tokenId(tokenId)
+	{
+	}
+
+	static const std::string getStaticType()
+	{
+		return "MessageActivateToken";
+	}
+
+public:
+	const Id tokenId;
+};
+
+#endif // MESSAGE_ACTIVATE_TOKEN_LOCATION_H
diff --git a/src/lib/utility/messaging/type/MessageActivateTokenLocation.h b/src/lib/utility/messaging/type/MessageActivateTokenLocation.h
deleted file mode 100644
index 85dcaf86..00000000
--- a/src/lib/utility/messaging/type/MessageActivateTokenLocation.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef MESSAGE_ACTIVATE_TOKEN_LOCATION_H
-#define MESSAGE_ACTIVATE_TOKEN_LOCATION_H
-
-#include "utility/messaging/Message.h"
-
-class MessageActivateTokenLocation: public Message<MessageActivateTokenLocation>
-{
-public:
-	static const std::string getStaticType()
-	{
-		return "MessageActivateTokenLocation";
-	}
-};
-
-#endif // MESSAGE_ACTIVATE_TOKEN_LOCATION_H