Implement Butterworth filters

src/main/java/app/SwingNavigator.java

@@ -4,6 +4,7 @@ import com.google.inject.Inject;
 import com.google.inject.Provider;
 import ui.implementation.views.DoubleMatrix;
 import ui.implementation.views.IdealFilteringView;
+import ui.implementation.views.NonIdealFilteringView;
 import ui.implementation.views.ViewInitializer;
 
 /**
@@ -15,27 +16,37 @@ public class SwingNavigator implements INavigator {
 
     private final Provider<DoubleMatrix> doubleMatrixProvider;
     private final Provider<IdealFilteringView> filteringProvider;
+    private final Provider<NonIdealFilteringView> nonIdealFilteringProvider;
 
     @Inject
     public SwingNavigator(
             Provider<DoubleMatrix> doubleMatrixProvider,
-            Provider<IdealFilteringView> filteringProvider
+            Provider<IdealFilteringView> filteringProvider,
+            Provider<NonIdealFilteringView> nonIdealFilteringProvider
     ) {
         this.doubleMatrixProvider = doubleMatrixProvider;
         this.filteringProvider = filteringProvider;
+        this.nonIdealFilteringProvider = nonIdealFilteringProvider;
     }
 
     @Override
     public void showFourier() {
-        DoubleMatrix doubleMatrix = doubleMatrixProvider.get();
-        ViewInitializer.Initialize(doubleMatrix);
-        doubleMatrix.setVisible(true);
+        DoubleMatrix view = doubleMatrixProvider.get();
+        ViewInitializer.Initialize(view);
+        view.setVisible(true);
     }
 
     @Override
     public void showFiltering() {
-        IdealFilteringView filteringView = filteringProvider.get();
-        ViewInitializer.Initialize(filteringView);
-        filteringView.setVisible(true);
+        IdealFilteringView view = filteringProvider.get();
+        ViewInitializer.Initialize(view);
+        view.setVisible(true);
+    }
+
+    @Override
+    public void showButterworth() {
+        NonIdealFilteringView view = nonIdealFilteringProvider.get();
+        ViewInitializer.Initialize(view);
+        view.setVisible(true);
     }
 }