ui: basic search view

- Added a basic SearchView (+ controller and qt implementation)
- SearchView can set the active element of other views by dispatching a message.
- SearchView adjusts its text when the active element is changed by other views.
- Added wrappers for Button and EditBox that allow the usage of simple callback functions.

src/lib/component/controller/SearchController.cpp

@@ -0,0 +1,40 @@
+#include "component/controller/SearchController.h"
+
+#include "component/view/SearchView.h"
+#include "data/access/GraphAccess.h"
+#include "utility/messaging/type/MessageActivateToken.h"
+
+SearchController::SearchController(std::shared_ptr<GraphAccess> graphAccess)
+	: m_graphAccess(graphAccess)
+{
+}
+
+SearchController::~SearchController()
+{
+}
+
+void SearchController::search(const std::string& s)
+{
+	LOG_INFO("searching string: \"" + s + "\"");
+	Id nodeId = m_graphAccess->getIdForNodeWithName(s);
+	if (nodeId > 0)
+	{
+		LOG_INFO("Node with name \"" + s + "\" found.");
+		MessageActivateToken message(nodeId);
+		message.dispatch();
+	}
+	else
+	{
+		LOG_INFO("Node with name \"" + s + "\" not found.");
+	}
+}
+
+void SearchController::handleMessage(MessageActivateToken* message)
+{
+	getView()->setText(m_graphAccess->getNameForNodeWithId(message->tokenId));
+}
+
+SearchView* SearchController::getView()
+{
+	return Controller::getView<SearchView>();
+}