Use Android integrated Google login

mobile/AndroidManifest.xml

@@ -8,9 +8,11 @@
         android:minSdkVersion="14"
         android:targetSdkVersion="17" />
 
-    <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.USE_CREDENTIALS" />
+    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application
         android:allowBackup="true"

mobile/res/values/strings.xml

@@ -56,4 +56,5 @@
     <string name="menu_faction">Faction</string>
     <string name="menu_info">Info</string>
     <string name="menu_debug">Debug</string>
+    <string name="choose_account_to_login">Choose account to login</string>
 </resources>

mobile/src/com/cradle/iitc_mobile/DeviceAccountLogin.java

@@ -0,0 +1,141 @@
+package com.cradle.iitc_mobile;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.accounts.AccountManagerCallback;
+import android.accounts.AccountManagerFuture;
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+import android.widget.BaseAdapter;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class DeviceAccountLogin implements AccountManagerCallback<Bundle> {
+    private class AccountAdapter extends BaseAdapter {
+        @Override
+        public int getCount() {
+            return mAccounts.length;
+        }
+
+        @Override
+        public Account getItem(int position) {
+            return mAccounts[position];
+        }
+
+        @Override
+        public long getItemId(int position) {
+            return position;
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            LayoutInflater inflater = mActivity.getLayoutInflater();
+            View v = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);
+
+            TextView tv = (TextView) v.findViewById(android.R.id.text1);
+            tv.setText(mAccounts[position].name);
+
+            return tv;
+        }
+    }
+
+    private Account mAccount;
+    private AccountAdapter mAccountAdapter;
+    private AccountManager mAccountManager;
+    private Account[] mAccounts;
+    private IITC_Mobile mActivity;
+    private String mAuthToken;
+    private WebView mWebView;
+
+    private DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener() {
+        @Override
+        public void onClick(DialogInterface dialog, int which) {
+            if (which >= 0 && which < mAccounts.length) {
+                mAccount = mAccounts[which];
+                startAuthentication();
+            }
+            dialog.cancel();
+        }
+    };
+
+    public DeviceAccountLogin(IITC_Mobile activity, WebView webView, WebViewClient webViewClient) {
+        mActivity = activity;
+        mWebView = webView;
+        mAccountManager = AccountManager.get(activity);
+        mAccountAdapter = new AccountAdapter();
+    }
+
+    private void displayAccountList() {
+        AlertDialog.Builder builder = new AlertDialog.Builder(mActivity);
+        builder
+                .setTitle(R.string.choose_account_to_login)
+                .setSingleChoiceItems(mAccountAdapter, 0, onClickListener)
+                .setNegativeButton(android.R.string.cancel, onClickListener);
+
+        AlertDialog dialog = builder.create();
+        dialog.show();
+    }
+
+    private void onLoginFailed() {
+        Toast.makeText(mActivity, "Login failed.", Toast.LENGTH_SHORT).show();
+        // TODO l10n
+    }
+
+    private void startAuthentication() {
+        mAccountManager.getAuthToken(mAccount, mAuthToken, null, mActivity, this, null);
+    }
+
+    public void onActivityResult(int resultCode, Intent data) {
+        if (resultCode == Activity.RESULT_OK)
+            startAuthentication();
+        else
+            onLoginFailed();
+    }
+
+    @Override
+    public void run(AccountManagerFuture<Bundle> value) {
+        try {
+            Intent launch = (Intent) value.getResult().get(AccountManager.KEY_INTENT);
+            if (launch != null) {
+                mActivity.startLoginActivity(launch);
+                return;
+            }
+
+            String result = value.getResult().getString(AccountManager.KEY_AUTHTOKEN);
+            if (result != null) {
+                mWebView.loadUrl(result);
+            } else {
+                onLoginFailed();
+            }
+        } catch (Exception e) {
+            onLoginFailed();
+        }
+    }
+
+    public void startLogin(String realm, String accountName, String args) {
+        mAccounts = mAccountManager.getAccountsByType(realm);
+        mAccountAdapter.notifyDataSetChanged();
+        mAuthToken = "weblogin:" + args;
+
+        if (mAccounts.length == 0) {
+            return;
+        }
+
+        for (Account account : mAccounts) {
+            if (account.name.equals(accountName)) {
+                mAccountManager.getAuthToken(account, mAuthToken, null, mActivity, this, null);
+                return;
+            }
+        }
+
+        displayAccountList();
+    }
+}

mobile/src/com/cradle/iitc_mobile/IITC_Mobile.java

@@ -24,10 +24,13 @@ import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
+import android.webkit.WebView;
 import android.widget.Toast;
 
 public class IITC_Mobile extends Activity {
 
+    private static final int REQUEST_LOGIN = 1;
+
     private IITC_WebView iitc_view;
     private boolean back_button_pressed = false;
     private OnSharedPreferenceChangeListener listener;
@@ -38,6 +41,7 @@ public class IITC_Mobile extends Activity {
     private boolean fullscreen_mode = false;
     private boolean fullscreen_actionbar = false;
     private ActionBar actionBar;
+    private DeviceAccountLogin mLogin;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -360,4 +364,26 @@ public class IITC_Mobile extends Activity {
     public IITC_WebView getWebView() {
         return this.iitc_view;
     }
+
+    public void startLoginActivity(Intent launch) {
+        startActivityForResult(launch, REQUEST_LOGIN);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            case REQUEST_LOGIN :
+                mLogin.onActivityResult(resultCode, data);
+                break;
+
+            default :
+                super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    public void onReceivedLoginRequest(IITC_WebViewClient client, WebView view,
+            String realm, String account, String args) {
+        mLogin = new DeviceAccountLogin(this, view, client);
+        mLogin.startLogin(realm, account, args);
+    }
 }

mobile/src/com/cradle/iitc_mobile/IITC_WebViewClient.java

@@ -133,6 +133,11 @@ public class IITC_WebViewClient extends WebViewClient {
         handler.proceed();
     };
 
+    @Override
+    public void onReceivedLoginRequest(WebView view, String realm, String account, String args) {
+        ((IITC_Mobile) context).onReceivedLoginRequest(this, view, realm, account, args);
+    }
+
     // plugins should be loaded after the main script is injected
     @Override
     public void onPageFinished(WebView view, String url) {