Add donation fragment

OpenKeychain/src/google/AndroidManifest.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
+        package="org.sufficientlysecure.keychain" >
+
+    <uses-permission android:name="com.android.vending.BILLING" />
+
+    <application />
+
+</manifest>

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/HelpActivity.java

@@ -20,11 +20,15 @@ package org.sufficientlysecure.keychain.ui;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
 import android.support.v4.view.ViewPager;
 import android.view.View;
 
 import com.astuetz.PagerSlidingTabStrip;
 
+import org.sufficientlysecure.donations.DonationsFragment;
+import org.sufficientlysecure.keychain.BuildConfig;
+import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.ui.adapter.PagerTabStripAdapter;
 import org.sufficientlysecure.keychain.ui.base.BaseActivity;
@@ -36,10 +40,15 @@ public class HelpActivity extends BaseActivity {
     public static final int TAB_START = 0;
     public static final int TAB_CONFIRM = 1;
     public static final int TAB_FAQ = 2;
-    public static final int TAB_CHANGELOG = 3;
-    public static final int TAB_ABOUT = 4;
+    public static final int TAB_DONATE = 3;
+    public static final int TAB_CHANGELOG = 4;
+    public static final int TAB_ABOUT = 5;
+
+    // Google Play
+    private static final String[] GOOGLE_PLAY_CATALOG = new String[]{"keychain.donation.1",
+            "keychain.donation.2", "keychain.donation.3", "keychain.donation.5", "keychain.donation.10",
+            "keychain.donation.50", "keychain.donation.100"};
 
-    ViewPager mViewPager;
     private PagerTabStripAdapter mTabsAdapter;
 
     @Override
@@ -53,12 +62,12 @@ public class HelpActivity extends BaseActivity {
             }
         });
 
-        mViewPager = (ViewPager) findViewById(R.id.pager);
+        ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
         PagerSlidingTabStrip slidingTabLayout =
                 (PagerSlidingTabStrip) findViewById(R.id.sliding_tab_layout);
 
         mTabsAdapter = new PagerTabStripAdapter(this);
-        mViewPager.setAdapter(mTabsAdapter);
+        viewPager.setAdapter(mTabsAdapter);
 
         int selectedTab = TAB_START;
         Intent intent = getIntent();
@@ -81,6 +90,26 @@ public class HelpActivity extends BaseActivity {
         mTabsAdapter.addTab(HelpMarkdownFragment.class, faqBundle,
                 getString(R.string.help_tab_faq));
 
+        Bundle donationsBundle = new Bundle();
+        donationsBundle.putBoolean(DonationsFragment.ARG_DEBUG, Constants.DEBUG);
+        if (BuildConfig.DONATIONS_GOOGLE) {
+            donationsBundle.putBoolean(DonationsFragment.ARG_GOOGLE_ENABLED, true);
+            donationsBundle.putString(DonationsFragment.ARG_GOOGLE_PUBKEY, BuildConfig.GOOGLE_PLAY_PUBKEY);
+            donationsBundle.putStringArray(DonationsFragment.ARG_GOOGLE_CATALOG, GOOGLE_PLAY_CATALOG);
+            donationsBundle.putStringArray(DonationsFragment.ARG_GOOGLE_CATALOG_VALUES,
+                    getResources().getStringArray(R.array.help_donation_google_catalog_values));
+        } else {
+            donationsBundle.putBoolean(DonationsFragment.ARG_PAYPAL_ENABLED, true);
+            donationsBundle.putString(DonationsFragment.ARG_PAYPAL_CURRENCY_CODE, BuildConfig.PAYPAL_CURRENCY_CODE);
+            donationsBundle.putString(DonationsFragment.ARG_PAYPAL_USER, BuildConfig.PAYPAL_USER);
+            donationsBundle.putString(DonationsFragment.ARG_PAYPAL_ITEM_NAME,
+                    getString(R.string.help_donation_paypal_item));
+            donationsBundle.putBoolean(DonationsFragment.ARG_BITCOIN_ENABLED, true);
+            donationsBundle.putString(DonationsFragment.ARG_BITCOIN_ADDRESS, BuildConfig.BITCOIN_ADDRESS);
+        }
+        mTabsAdapter.addTab(DonationsFragment.class, donationsBundle,
+                getString(R.string.help_tab_donations));
+
         Bundle changelogBundle = new Bundle();
         changelogBundle.putInt(HelpMarkdownFragment.ARG_MARKDOWN_RES, R.raw.help_changelog);
         mTabsAdapter.addTab(HelpMarkdownFragment.class, changelogBundle,
@@ -90,10 +119,10 @@ public class HelpActivity extends BaseActivity {
                 getString(R.string.help_tab_about));
 
         // NOTE: must be after adding the tabs!
-        slidingTabLayout.setViewPager(mViewPager);
+        slidingTabLayout.setViewPager(viewPager);
 
         // switch to tab selected by extra
-        mViewPager.setCurrentItem(selectedTab);
+        viewPager.setCurrentItem(selectedTab);
     }
 
     @Override
@@ -107,4 +136,18 @@ public class HelpActivity extends BaseActivity {
         context.startActivity(intent);
     }
 
+    /**
+     * Needed for Google Play In-app Billing. It uses startIntentSenderForResult(). The result is not propagated to
+     * the Fragment like in startActivityForResult(). Thus we need to propagate manually to our Fragment.
+     */
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        Fragment fragment = mTabsAdapter.getRegisteredFragment(TAB_DONATE);
+        if (fragment != null) {
+            fragment.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/PagerTabStripAdapter.java

@@ -22,12 +22,15 @@ import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentPagerAdapter;
 import android.support.v7.app.AppCompatActivity;
+import android.util.SparseArray;
+import android.view.ViewGroup;
 
 import java.util.ArrayList;
 
 public class PagerTabStripAdapter extends FragmentPagerAdapter {
     protected final Activity mActivity;
     protected final ArrayList<TabInfo> mTabs = new ArrayList<>();
+    SparseArray<Fragment> registeredFragments = new SparseArray<Fragment>();
 
     static final class TabInfo {
         public final Class<?> clss;
@@ -72,4 +75,21 @@ public class PagerTabStripAdapter extends FragmentPagerAdapter {
     public CharSequence getPageTitle(int position) {
         return mTabs.get(position).title;
     }
+
+    @Override
+    public Object instantiateItem(ViewGroup container, int position) {
+        Fragment fragment = (Fragment) super.instantiateItem(container, position);
+        registeredFragments.put(position, fragment);
+        return fragment;
+    }
+
+    @Override
+    public void destroyItem(ViewGroup container, int position, Object object) {
+        registeredFragments.remove(position);
+        super.destroyItem(container, position, object);
+    }
+
+    public Fragment getRegisteredFragment(int position) {
+        return registeredFragments.get(position);
+    }
 }

OpenKeychain/src/main/res/values/strings.xml

@@ -502,6 +502,7 @@
     <string name="help_tab_changelog">"Changelog"</string>
     <string name="help_tab_about">"About"</string>
     <string name="help_about_version">"Version:"</string>
+    <string name="help_tab_donations">"Donate"</string>
 
     <!-- Import -->
     <string name="import_tab_keyserver">"Keyserver"</string>
@@ -1725,5 +1726,13 @@
     <string name="prompt_fidesmo_app_install_message">"To install PGP you need the Fidesmo Android app."</string>
     <string name="prompt_fidesmo_app_install_button_positive">"Install"</string>
     <string name="prompt_fidesmo_app_install_button_negative">"Cancel"</string>
-
+    <string name="help_donation_paypal_item">OpenKeychain Donation</string>
+    <string-array name="help_donation_google_catalog_values">
+        <item>1 Euro</item>
+        <item>3 Euro</item>
+        <item>5 Euro</item>
+        <item>10 Euro</item>
+        <item>50 Euro</item>
+        <item>100 Euro</item>
+    </string-array>
 </resources>