WelcomeTutorialWizardActivity.java

package com.androsz.electricsleepbeta.app.wizard;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.androsz.electricsleepbeta.R;
import com.androsz.electricsleepbeta.app.HomeActivity;
import com.androsz.electricsleepbeta.app.SettingsActivity;
import com.viewpagerindicator.TitleProvider;

public class WelcomeTutorialWizardActivity extends WizardActivity {

    public static boolean enforceCalibrationBeforeStartingSleep(
            final Activity context) {

        final SharedPreferences userPrefs = context.getSharedPreferences(
                SettingsActivity.PREFERENCES_ENVIRONMENT, Context.MODE_PRIVATE);
        final int prefsVersion = userPrefs.getInt(
                SettingsActivity.PREFERENCES_ENVIRONMENT, 0);
        String message = "";
        if (prefsVersion == 0) {
            message = context.getString(R.string.message_not_calibrated);
        } else if (prefsVersion != context.getResources().getInteger(
                R.integer.prefs_version)) {
            message = context.getString(R.string.message_prefs_not_compatible);
        }

        if (message.length() > 0) {
            message += context
                    .getString(R.string.message_recommend_calibration);
            final AlertDialog.Builder dialog = new AlertDialog.Builder(context)
                    .setMessage(message)
                    .setCancelable(false)
                    .setPositiveButton(context.getString(R.string.calibrate),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(
                                        final DialogInterface dialog,
                                        final int id) {
                                    context.startActivity(new Intent(context,
                                            CalibrationWizardActivity.class));
                                    context.finish();
                                }
                            })
                    .setNeutralButton(context.getString(R.string.manual),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(
                                        final DialogInterface dialog,
                                        final int id) {
                                    context.startActivity(new Intent(context,
                                            SettingsActivity.class));
                                    context.finish();
                                }
                            })
                    .setNegativeButton(context.getString(R.string.cancel),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(
                                        final DialogInterface dialog,
                                        final int id) {
                                    dialog.cancel();
                                }
                            });
            dialog.show();
            return false;
        } else {
            return true;
        }
    }

    private boolean required = false;

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        required = getIntent().hasExtra("required");
        if (required) {
            final ActionBar bar = getSupportActionBar();
            bar.setDisplayHomeAsUpEnabled(false);
        }
    }

    // Prevents options from showing up if required
    @Override
    public boolean onCreateOptionsMenu(final Menu menu) {
        if (required) {
            return false;
        } else {
            return super.onCreateOptionsMenu(menu);
        }
    }

    // Prevents Home button from triggering if required
    @Override
    public boolean onOptionsItemSelected(final MenuItem item) {
        if (required && item.getItemId() == android.R.id.home) {
            return false;
        } else {
            return super.onOptionsItemSelected(item);
        }
    }

    @Override
    protected void onFinishWizardActivity() {
        final int applicationFlags = getApplicationInfo().flags;
        // is android:debuggable is set to true?
        if ((applicationFlags & ApplicationInfo.FLAG_DEBUGGABLE) != 0
                || !required) {
            if (enforceCalibrationBeforeStartingSleep(this)) {
                startActivity(new Intent(this, HomeActivity.class));
                finish();
            }
        } else {
            startActivity(new Intent(this, CalibrationWizardActivity.class));
            finish();
        }
    }

    @Override
    public void onRightButtonClick(View v) {
        findViewById(R.id.leftButton).setVisibility(View.VISIBLE);
        super.onRightButtonClick(v);
    }

    @Override
    public void onLeftButtonClick(final View v) {
        if (getCurrentWizardIndex() == 0) {
            onFinishWizardActivity();
        } else {
            super.onLeftButtonClick(v);
        }
    }

    @Override
    protected void onPrepareLastSlide(Button rightButton) {
        if (required) {
            rightButton.setText(R.string.calibrate);
        }
    }

    @Override
    protected void onRestoreInstanceState(final Bundle savedState) {
        super.onRestoreInstanceState(savedState);
        required = savedState.getBoolean("required");
    }

    @Override
    protected void onSaveInstanceState(final Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putBoolean("required", required);
    }

    @Override
    protected void onPerformWizardAction(int index) {
    }

    @Override
    protected void setupNavigationButtons(int index) {
        super.setupNavigationButtons(index);
        final Button leftButton = (Button) findViewById(R.id.leftButton);
        if (index == 0) {
            leftButton.setText(R.string.skip_tutorial);
        }
    }

    private class WizardPagerAdapter extends PagerAdapter implements
            TitleProvider {

        private String[] titles = new String[] { "Welcome", "How It Works" };

        @Override
        public String getTitle(int position) {
            return titles[position];
        }

        @Override
        public int getCount() {
            return titles.length;
        }

        @Override
        public void startUpdate(View container) {
            // TODO Auto-generated method stub

        }

        @Override
        public Object instantiateItem(View container, int position) {
            View instantiatedItem = null;
            LayoutInflater inflater = getLayoutInflater();
            switch (position) {
            case 0:
                instantiatedItem = inflater.inflate(
                        R.layout.wizard_welcome_welcome, null);
                break;
            case 1:
                instantiatedItem = inflater.inflate(
                        R.layout.wizard_welcome_how, null);
                break;
            }
            ((ViewGroup) container).addView(instantiatedItem);
            return instantiatedItem;
        }

        @Override
        public void destroyItem(View container, int position, Object object) {
            ((ViewPager) container).removeView((View) object);
        }

        @Override
        public void finishUpdate(View container) {
            // TODO Auto-generated method stub

        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return ((View) object).equals(view);
        }

        @Override
        public Parcelable saveState() {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public void restoreState(Parcelable state, ClassLoader loader) {
            // TODO Auto-generated method stub

        }

    }

    @Override
    protected PagerAdapter getPagerAdapter() {
        return new WizardPagerAdapter();
    }
}