wizard added

android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorMode.java

@@ -47,4 +47,9 @@ enum CalculatorMode {
 	}
 
 	protected abstract void apply(@Nonnull SharedPreferences preferences);
+
+	@Nonnull
+	static CalculatorMode getDefaultMode(){
+		return engineer;
+	}
 }

android-app/src/main/java/org/solovyev/android/calculator/wizard/CalculatorWizardActivity.java

@@ -171,7 +171,7 @@ public final class CalculatorWizardActivity extends SherlockFragmentActivity {
 		Fragment newFragment = fm.findFragmentByTag(this.step.getFragmentTag());
 
 		if (newFragment == null) {
-			newFragment = Fragment.instantiate(this, this.step.getFragmentClass().getName());
+			newFragment = Fragment.instantiate(this, this.step.getFragmentClass().getName(), this.step.getFragmentArgs());
 			ft.add(R.id.wizard_content, newFragment, this.step.getFragmentTag());
 		} else {
 			ft.show(newFragment);

android-app/src/main/java/org/solovyev/android/calculator/wizard/ChooseModeWizardStep.java

@@ -15,9 +15,10 @@ import org.solovyev.android.list.ListItemAdapter;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
-import static org.solovyev.android.calculator.wizard.CalculatorMode.simple;
+import static org.solovyev.android.calculator.wizard.CalculatorMode.getDefaultMode;
 
 /**
  * User: serso
@@ -26,9 +27,42 @@ import static org.solovyev.android.calculator.wizard.CalculatorMode.simple;
  */
 public final class ChooseModeWizardStep extends SherlockFragment {
 
+	/*
+	**********************************************************************
+	*
+	*                           CONSTANTS
+	*
+	**********************************************************************
+	*/
+
+	static final String MODE = "mode";
+
+	/*
+	**********************************************************************
+	*
+	*                           FIELDS
+	*
+	**********************************************************************
+	*/
+
 	@Nullable
 	private Spinner layoutSpinner;
 
+	private CalculatorMode mode;
+
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		if(savedInstanceState != null) {
+			mode = (CalculatorMode) savedInstanceState.getSerializable(MODE);
+		}
+
+		if (mode == null) {
+			mode = (CalculatorMode) getArguments().getSerializable(MODE);
+		}
+	}
+
 	@Override
 	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 		return inflater.inflate(R.layout.cpp_wizard_step_choose_mode, null);
@@ -39,16 +73,22 @@ public final class ChooseModeWizardStep extends SherlockFragment {
 		super.onViewCreated(root, savedInstanceState);
 
 		layoutSpinner = (Spinner) root.findViewById(R.id.wizard_mode_spinner);
+
 		final List<ModeListItem> listItems = new ArrayList<ModeListItem>();
 		for (CalculatorMode mode : CalculatorMode.values()) {
 			listItems.add(new ModeListItem(mode));
 		}
 		layoutSpinner.setAdapter(ListItemAdapter.newInstance(getActivity(), listItems));
+
+		final int position = Arrays.binarySearch(CalculatorMode.values(), mode);
+		if (position >= 0) {
+			layoutSpinner.setSelection(position);
+		}
 	}
 
 	@Nonnull
 	CalculatorMode getSelectedMode() {
-		CalculatorMode mode = simple;
+		CalculatorMode mode = getDefaultMode();
 
 		if (layoutSpinner != null) {
 			final int position = layoutSpinner.getSelectedItemPosition();
@@ -61,6 +101,13 @@ public final class ChooseModeWizardStep extends SherlockFragment {
 		return mode;
 	}
 
+	@Override
+	public void onSaveInstanceState(Bundle outState) {
+		super.onSaveInstanceState(outState);
+
+		outState.putSerializable(MODE, mode);
+	}
+
 	/*
 	**********************************************************************
 	*

android-app/src/main/java/org/solovyev/android/calculator/wizard/Wizard.java

@@ -1,7 +1,12 @@
 package org.solovyev.android.calculator.wizard;
 
+import org.solovyev.android.prefs.Preference;
+
 import javax.annotation.Nonnull;
 
+import static org.solovyev.android.calculator.wizard.CalculatorMode.getDefaultMode;
+import static org.solovyev.android.prefs.StringPreference.ofEnum;
+
 /**
  * User: serso
  * Date: 6/16/13
@@ -23,4 +28,16 @@ public final class Wizard {
 			throw new IllegalArgumentException("Wizard flow " + name + " is not supported");
 		}
 	}
+
+	/*
+	**********************************************************************
+	*
+	*                           STATIC/INNER
+	*
+	**********************************************************************
+	*/
+
+	static final class Preferences {
+		static final Preference<CalculatorMode> mode = ofEnum("mode", getDefaultMode(), CalculatorMode.class);
+	}
 }

android-app/src/main/java/org/solovyev/android/calculator/wizard/WizardStep.java

@@ -1,9 +1,16 @@
 package org.solovyev.android.calculator.wizard;
 
+import android.content.SharedPreferences;
+import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.support.v4.app.Fragment;
+import org.solovyev.android.calculator.CalculatorApplication;
 
 import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+import static org.solovyev.android.calculator.wizard.ChooseModeWizardStep.MODE;
+import static org.solovyev.android.calculator.wizard.Wizard.Preferences;
 
 /**
  * User: serso
@@ -22,6 +29,12 @@ enum WizardStep {
 		boolean onPrev(@Nonnull Fragment fragment) {
 			return true;
 		}
+
+		@Nullable
+		@Override
+		Bundle getFragmentArgs() {
+			return null;
+		}
 	},
 
 	choose_mode(ChooseModeWizardStep.class) {
@@ -29,8 +42,11 @@ enum WizardStep {
 		boolean onNext(@Nonnull Fragment f) {
 			final ChooseModeWizardStep fragment = (ChooseModeWizardStep) f;
 
+			final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(f.getActivity());
+
 			final CalculatorMode mode = fragment.getSelectedMode();
-			mode.apply(PreferenceManager.getDefaultSharedPreferences(f.getActivity()));
+			mode.apply(preferences);
+			Preferences.mode.putPreference(preferences, mode);
 
 			return true;
 		}
@@ -39,6 +55,16 @@ enum WizardStep {
 		boolean onPrev(@Nonnull Fragment fragment) {
 			return true;
 		}
+
+		@Nullable
+		@Override
+		Bundle getFragmentArgs() {
+			final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(CalculatorApplication.getInstance());
+
+			final Bundle bundle = new Bundle();
+			bundle.putSerializable(MODE, Preferences.mode.getPreference(preferences));
+			return bundle;
+		}
 	};
 
 	@Nonnull
@@ -59,4 +85,7 @@ enum WizardStep {
 
 	abstract boolean onNext(@Nonnull Fragment fragment);
 	abstract boolean onPrev(@Nonnull Fragment fragment);
+
+	@Nullable
+	abstract Bundle getFragmentArgs();
 }