[apps/go_to_param_cntrlr] Change parameter name according to func

apps/shared.universal.i18n

@@ -74,7 +74,9 @@ SortCommandWithArg = "sort<(L)"
 SumCommand = "sum(\x11,n,\x11,\x11)"
 SumCommandWithArg = "sum(f(n),n,nmin,nmax)"
 Sxy = "∑xy"
+T = "t"
 TanhCommandWithArg = "tanh(x)"
+Theta = "θ"
 TMax = "Tmax"
 TMin = "Tmin"
 TraceCommandWithArg = "trace(M)"

apps/shared/cartesian_function.cpp

@@ -8,6 +8,7 @@
 #include <poincare/serialization_helper.h>
 #include <escher/palette.h>
 #include <ion/unicode/utf8_decoder.h>
+#include <apps/i18n.h>
 #include <float.h>
 #include <cmath>
 
@@ -93,6 +94,18 @@ Poincare::Expression CartesianFunction::expressionReduced(Poincare::Context * co
   return result;
 }
 
+I18n::Message CartesianFunction::parameterMessageName() const {
+  PlotType type = plotType();
+  if (type == PlotType::Cartesian) {
+    return I18n::Message::X;
+  }
+  if (type == PlotType::Polar) {
+    return I18n::Message::Theta;
+  }
+  assert(plotType() == PlotType::Parametric);
+  return I18n::Message::T;
+}
+
 CodePoint CartesianFunction::symbol() const {
   switch (plotType()) {
   case PlotType::Cartesian:

apps/shared/cartesian_function.h

@@ -14,6 +14,7 @@ public:
   CartesianFunction(Ion::Storage::Record record = Record()) :
     Function(record)
   {}
+  I18n::Message parameterMessageName() const override;
   CodePoint symbol() const override;
   Poincare::Expression expressionReduced(Poincare::Context * context) const override;
 

apps/shared/function.cpp

@@ -3,6 +3,7 @@
 #include "poincare/src/parsing/parser.h"
 #include <ion/unicode/utf8_helper.h>
 #include <ion/unicode/utf8_decoder.h>
+#include <apps/i18n.h>
 #include <string.h>
 #include <cmath>
 #include <assert.h>
@@ -65,6 +66,10 @@ int Function::printValue(double cursorT, double cursorX, double cursorY, char *
   return PoincareHelpers::ConvertFloatToText<double>(cursorY, buffer, bufferSize, precision);
 }
 
+I18n::Message Function::parameterMessageName() const {
+  return I18n::Message::X;
+}
+
 int Function::nameWithArgument(char * buffer, size_t bufferSize) {
   const char * functionName = fullName();
   size_t result = SymbolAbstract::TruncateExtension(buffer, functionName, bufferSize);

apps/shared/function.h

@@ -3,6 +3,7 @@
 
 #include <poincare/function.h>
 #include <poincare/symbol.h>
+#include <escher/i18n.h>
 #include "expression_model_handle.h"
 
 #if __EMSCRIPTEN__
@@ -42,6 +43,7 @@ public:
   // Name
   int nameWithArgument(char * buffer, size_t bufferSize);
   virtual int printValue(double cursorT, double cursorX, double cursorY, char * buffer, int bufferSize, int precision, Poincare::Context * context);
+  virtual I18n::Message parameterMessageName() const;
 
   // Evaluation
   virtual Poincare::Coordinate2D<float> evaluateXYAtParameter(float t, Poincare::Context * context) const = 0;

apps/shared/function_go_to_parameter_controller.cpp

@@ -39,6 +39,9 @@ bool FunctionGoToParameterController::setParameterAtIndex(int parameterIndex, do
 
 void FunctionGoToParameterController::setRecord(Ion::Storage::Record record) {
   m_record = record;
+  FunctionApp * myApp = FunctionApp::app();
+  ExpiringPointer<Function> function = myApp->functionStore()->modelForRecord(m_record);
+  setParameterName(function->parameterMessageName());
 }
 
 }

apps/shared/go_to_parameter_controller.h

@@ -14,6 +14,7 @@ public:
   int numberOfRows() override;
   bool handleEvent(Ion::Events::Event event) override;
 protected:
+  void setParameterName(I18n::Message message) { m_abscisseCell.setMessage(message); }
   CurveViewCursor * m_cursor;
   InteractiveCurveViewRange * m_graphRange;
 private: