1 files changed, 114 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/connector/gc/RecaptchaHandler.java b/main/src/cgeo/geocaching/connector/gc/RecaptchaHandler.java
new file mode 100644
index 0000000..ff3f5ef
--- /dev/null
+++ b/main/src/cgeo/geocaching/connector/gc/RecaptchaHandler.java
@@ -0,0 +1,114 @@
+package cgeo.geocaching.connector.gc;
+
+import cgeo.geocaching.R;
+import cgeo.geocaching.loaders.RecaptchaReceiver;
+import cgeo.geocaching.network.Network;
+import cgeo.geocaching.utils.Log;
+
+import org.apache.commons.io.IOUtils;
+
+import rx.Observable;
+import rx.android.observables.AndroidObservable;
+import rx.schedulers.Schedulers;
+import rx.functions.Action1;
+import rx.functions.Func0;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Handler;
+import android.os.Message;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+
+import java.io.InputStream;
+
+public class RecaptchaHandler extends Handler {
+    final public static int SHOW_CAPTCHA = 1;
+
+    final private Activity activity;
+    final private RecaptchaReceiver recaptchaReceiver;
+
+    public RecaptchaHandler(final Activity activity, final RecaptchaReceiver recaptchaReceiver) {
+        this.activity = activity;
+        this.recaptchaReceiver = recaptchaReceiver;
+    }
+
+    private void loadChallenge(final ImageView imageView, final View reloadButton) {
+        getCaptcha().subscribe(new Action1<Bitmap>() {
+            @Override
+            public void call(final Bitmap bitmap) {
+                imageView.setImageBitmap(bitmap);
+            }
+        }, new Action1<Throwable>() {
+                                   @Override
+                                   public void call(final Throwable throwable) {
+                                       // Do nothing
+                                   }
+                               });
+        reloadButton.setEnabled(true);
+    }
+
+    @Override
+    public void handleMessage(Message msg) {
+        if (msg.what == SHOW_CAPTCHA) {
+            final AlertDialog.Builder dlg = new AlertDialog.Builder(activity);
+            final View view = activity.getLayoutInflater().inflate(R.layout.recaptcha_dialog, null);
+
+            final ImageView imageView = (ImageView) view.findViewById(R.id.image);
+
+            final ImageButton reloadButton = (ImageButton) view.findViewById(R.id.button_recaptcha_refresh);
+            reloadButton.setEnabled(false);
+            reloadButton.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    recaptchaReceiver.fetchChallenge();
+                    loadChallenge(imageView, reloadButton);
+                }
+            });
+
+            loadChallenge(imageView, reloadButton);
+
+            dlg.setTitle(activity.getString(R.string.caches_recaptcha_title));
+            dlg.setView(view);
+            dlg.setNeutralButton(activity.getString(R.string.caches_recaptcha_continue), new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int id) {
+                    final String text = ((EditText) view.findViewById(R.id.text)).getText().toString();
+                    recaptchaReceiver.setText(text);
+                    dialog.cancel();
+                }
+            });
+
+            dlg.create().show();
+        }
+    }
+
+    private Observable<Bitmap> getCaptcha() {
+        return AndroidObservable.fromActivity(activity,
+                Observable.defer(new Func0<Observable<? extends Bitmap>>() {
+                    @Override
+                    public Observable<? extends Bitmap> call() {
+                        final String url = "http://www.google.com/recaptcha/api/image?c=" + recaptchaReceiver.getChallenge();
+                        final InputStream is = Network.getResponseStream(Network.getRequest(url));
+                        if (is != null) {
+                            try {
+                                final Bitmap img = BitmapFactory.decodeStream(is);
+                                return Observable.from(img);
+                            } catch (final Exception e) {
+                                Log.e("RecaptchaHandler.getCaptcha", e);
+                                return Observable.error(e);
+                            } finally {
+                                IOUtils.closeQuietly(is);
+                            }
+                        }
+                        return Observable.empty();
+                    }
+                }).subscribeOn(Schedulers.io()));
+    }
+
+}