diff --git a/apps/float_parameter_controller.cpp b/apps/float_parameter_controller.cpp
index 0f29080cf..e7bd42c54 100644
--- a/apps/float_parameter_controller.cpp
+++ b/apps/float_parameter_controller.cpp
@@ -1,6 +1,7 @@
 #include "float_parameter_controller.h"
 #include "constant.h"
 #include "apps_container.h"
+#include "text_field_delegate_app.h"
 #include <assert.h>
 
 FloatParameterController::FloatParameterController(Responder * parentResponder) :
@@ -40,6 +41,11 @@ bool FloatParameterController::textFieldDidFinishEditing(TextField * textField,
   return true;
 }
 
+bool FloatParameterController::textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) {
+  TextFieldDelegateApp * myApp = (TextFieldDelegateApp *)app();
+  return myApp->textFieldDidReceiveEvent(textField, event);
+}
+
 void FloatParameterController::tableViewDidChangeSelection(SelectableTableView * t, int previousSelectedCellX, int previousSelectedCellY) {
   EditableTextMenuListCell * myCell = (EditableTextMenuListCell *)t->cellAtLocation(previousSelectedCellX, previousSelectedCellY);
   myCell->setEditing(false);
diff --git a/apps/float_parameter_controller.h b/apps/float_parameter_controller.h
index a5fec9b4c..f662e4add 100644
--- a/apps/float_parameter_controller.h
+++ b/apps/float_parameter_controller.h
@@ -16,6 +16,7 @@ public:
   KDCoordinate cellHeight() override;
   void willDisplayCellForIndex(TableViewCell * cell, int index) override;
   bool textFieldDidFinishEditing(TextField * textField, const char * text) override;
+  bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
   void tableViewDidChangeSelection(SelectableTableView * t, int previousSelectedCellX, int previousSelectedCellY) override;
 protected:
   int activeCell();
diff --git a/apps/graph/graph/goto_parameter_controller.cpp b/apps/graph/graph/goto_parameter_controller.cpp
index 56572345e..cf38a6931 100644
--- a/apps/graph/graph/goto_parameter_controller.cpp
+++ b/apps/graph/graph/goto_parameter_controller.cpp
@@ -48,9 +48,4 @@ void GoToParameterController::setFunction(Function * function) {
   m_function = function;
 }
 
-bool GoToParameterController::textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) {
-  App * myApp = (App *)app();
-  return myApp->textFieldDidReceiveEvent(textField, event);
-}
-
 }
diff --git a/apps/graph/graph/goto_parameter_controller.h b/apps/graph/graph/goto_parameter_controller.h
index f3ca7c7c5..1872e5b1a 100644
--- a/apps/graph/graph/goto_parameter_controller.h
+++ b/apps/graph/graph/goto_parameter_controller.h
@@ -15,7 +15,6 @@ public:
   TableViewCell * reusableCell(int index) override;
   int reusableCellCount() override;
   void setFunction(Function * function);
-  bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
 private:
   float parameterAtIndex(int index) override;
   void setParameterAtIndex(int parameterIndex, float f) override;
diff --git a/apps/graph/graph/window_parameter_controller.cpp b/apps/graph/graph/window_parameter_controller.cpp
index 320523e68..ccdeb2e3b 100644
--- a/apps/graph/graph/window_parameter_controller.cpp
+++ b/apps/graph/graph/window_parameter_controller.cpp
@@ -134,9 +134,4 @@ int WindowParameterController::reusableCellCount() {
   return k_numberOfTextCell+1;
 }
 
-bool WindowParameterController::textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) {
-  App * myApp = (App *)app();
-  return myApp->textFieldDidReceiveEvent(textField, event);
-}
-
 }
diff --git a/apps/graph/graph/window_parameter_controller.h b/apps/graph/graph/window_parameter_controller.h
index 128e09c00..979a26166 100644
--- a/apps/graph/graph/window_parameter_controller.h
+++ b/apps/graph/graph/window_parameter_controller.h
@@ -19,7 +19,6 @@ public:
   bool textFieldDidFinishEditing(TextField * textField, const char * text) override;
   void tableViewDidChangeSelection(SelectableTableView * t, int previousSelectedCellX, int previousSelectedCellY) override;
   bool handleEvent(Ion::Events::Event event) override;
-  bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
 private:
   float parameterAtIndex(int index) override;
   void setParameterAtIndex(int parameterIndex, float f) override;
diff --git a/apps/graph/values/interval_parameter_controller.cpp b/apps/graph/values/interval_parameter_controller.cpp
index d92281697..34d6fcbb0 100644
--- a/apps/graph/values/interval_parameter_controller.cpp
+++ b/apps/graph/values/interval_parameter_controller.cpp
@@ -71,9 +71,4 @@ int IntervalParameterController::reusableCellCount() {
   return k_totalNumberOfCell;
 }
 
-bool IntervalParameterController::textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) {
-  App * myApp = (App *)app();
-  return myApp->textFieldDidReceiveEvent(textField, event);
-}
-
 }
diff --git a/apps/graph/values/interval_parameter_controller.h b/apps/graph/values/interval_parameter_controller.h
index 6337577d4..43ff644c4 100644
--- a/apps/graph/values/interval_parameter_controller.h
+++ b/apps/graph/values/interval_parameter_controller.h
@@ -16,7 +16,6 @@ public:
   int numberOfRows() override;
   TableViewCell * reusableCell(int index) override;
   int reusableCellCount() override;
-  bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
 private:
   float parameterAtIndex(int index) override;
   void setParameterAtIndex(int parameterIndex, float f) override;
diff --git a/apps/probability/parameters_controller.cpp b/apps/probability/parameters_controller.cpp
index 0aece2923..0552a23ff 100644
--- a/apps/probability/parameters_controller.cpp
+++ b/apps/probability/parameters_controller.cpp
@@ -185,10 +185,5 @@ void ParametersController::setParameterAtIndex(int parameterIndex, float f) {
   m_law->setParameterAtIndex(f, parameterIndex);
 }
 
-bool ParametersController::textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) {
-  App * myApp = (App *)app();
-  return myApp->textFieldDidReceiveEvent(textField, event);
-}
-
 }
 
diff --git a/apps/probability/parameters_controller.h b/apps/probability/parameters_controller.h
index febfc50b7..84b3a5b8e 100644
--- a/apps/probability/parameters_controller.h
+++ b/apps/probability/parameters_controller.h
@@ -23,7 +23,6 @@ public:
   void willDisplayCellForIndex(TableViewCell * cell, int index) override;
   TableViewCell * reusableCell(int index) override;
   int reusableCellCount() override;
-  bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
 private:
   float parameterAtIndex(int index) override;
   void setParameterAtIndex(int parameterIndex, float f) override;