functions

calculatorpp-core/src/main/java/org/solovyev/android/calculator/CalculatorFunctionsMathRegistry.java

@@ -6,6 +6,7 @@
 
 package org.solovyev.android.calculator;
 
+import jscl.CustomFunctionCalculationException;
 import jscl.math.function.CustomFunction;
 import jscl.math.function.Function;
 import org.jetbrains.annotations.NotNull;
@@ -52,7 +53,7 @@ public class CalculatorFunctionsMathRegistry extends AbstractCalculatorMathRegis
 	public static void saveFunction(@NotNull CalculatorMathRegistry<Function> registry,
 									@NotNull MathEntityBuilder<? extends Function> builder,
 									@Nullable Function editedInstance,
-									@NotNull Object source, boolean save) {
+									@NotNull Object source, boolean save) throws CustomFunctionCalculationException {
 		final Function addedFunction = registry.add(builder);
 
 		if (save) {

calculatorpp-core/src/main/java/org/solovyev/android/calculator/CalculatorImpl.java

@@ -411,6 +411,21 @@ public class CalculatorImpl implements Calculator, CalculatorEventListener {
                 onDisplayStateChanged((CalculatorDisplayChangeEventData) data);
                 break;
 
+            case constant_changed:
+                final IConstant newConstant = ((Change<IConstant>)data) .getNewValue();
+                if (!newConstant.getName().equals(CalculatorVarsRegistry.ANS)) {
+                    evaluate();
+                }
+                break;
+
+            case constant_added:
+            case constant_removed:
+            case function_added:
+            case function_changed:
+            case function_removed:
+                evaluate();
+                break;
+
             case engine_preferences_changed:
                 evaluate(calculatorEventData.getSequenceId());
                 break;

calculatorpp-core/src/main/java/org/solovyev/android/calculator/FunctionCategory.java

@@ -84,9 +84,6 @@ public enum FunctionCategory {
             }
         });
 
-        // todo serso: current solution (as creating functions is not implemented yet)
-        result.remove(my);
-
         return result;
     }
 }