From 54bb143302f77903a0f0484c53c5399354c34b20 Mon Sep 17 00:00:00 2001
From: Dmitry Kunin <dkunin@mapswith.me>
Date: Thu, 13 Feb 2014 18:47:55 +0300
Subject: [PATCH] [and] VoiceRecognition for search.

---
 android/MapsWithMePro/AndroidManifest.xml     |  1 -
 .../com/mapswithme/maps/SearchActivity.java   | 33 +++++++++++-
 .../src/com/mapswithme/util/InputUtils.java   | 53 +++++++++++++++++++
 3 files changed, 85 insertions(+), 2 deletions(-)
 create mode 100644 android/src/com/mapswithme/util/InputUtils.java

diff --git a/android/MapsWithMePro/AndroidManifest.xml b/android/MapsWithMePro/AndroidManifest.xml
index cfbd120169..ba0b85464f 100644
--- a/android/MapsWithMePro/AndroidManifest.xml
+++ b/android/MapsWithMePro/AndroidManifest.xml
@@ -173,7 +173,6 @@
             android:configChanges="orientation|screenLayout|screenSize"
             android:label="@string/search_map"
             android:windowSoftInputMode="stateVisible|adjustResize"
-            android:noHistory="true"
             android:screenOrientation="behind" >
         </activity>
         <activity
diff --git a/android/src/com/mapswithme/maps/SearchActivity.java b/android/src/com/mapswithme/maps/SearchActivity.java
index afcbc164a5..f92304d775 100644
--- a/android/src/com/mapswithme/maps/SearchActivity.java
+++ b/android/src/com/mapswithme/maps/SearchActivity.java
@@ -2,6 +2,7 @@ package com.mapswithme.maps;
 
 import android.annotation.SuppressLint;
 import android.app.ActionBar;
+import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Resources;
@@ -27,6 +28,7 @@ import android.widget.TextView;
 import com.mapswithme.maps.base.MapsWithMeBaseListActivity;
 import com.mapswithme.maps.location.LocationService;
 import com.mapswithme.maps.search.SearchController;
+import com.mapswithme.util.InputUtils;
 import com.mapswithme.util.Language;
 import com.mapswithme.util.UiUtils;
 import com.mapswithme.util.Utils;
@@ -487,7 +489,7 @@ public class SearchActivity extends MapsWithMeBaseListActivity implements Locati
         if (s.length() == 0) // enable voice input
         {
           UiUtils.invisible(mClearQueryBtn);
-          UiUtils.show(mVoiceInput);
+          UiUtils.hideIf(!InputUtils.isVoiceInputSupported(SearchActivity.this), mVoiceInput);
         }
         else // show clear cross
         {
@@ -555,6 +557,16 @@ public class SearchActivity extends MapsWithMeBaseListActivity implements Locati
       {
       }
     });
+
+    mVoiceInput.setOnClickListener(new OnClickListener()
+    {
+      @Override
+      public void onClick(View v)
+      {
+        final Intent vrIntent = InputUtils.createIntentForVoiceRecognition(getResources().getString(R.string.search_map));
+        startActivityForResult(vrIntent, RC_VOICE_RECOGNITIN);
+      }
+    });
   }
 
   @Override
@@ -815,4 +827,23 @@ public class SearchActivity extends MapsWithMeBaseListActivity implements Locati
 
   private native String getLastQuery();
   private native void clearLastQuery();
+
+
+  // Handle voice recognition here
+  private final static int RC_VOICE_RECOGNITIN = 0xCA11;
+
+  @Override
+  protected void onActivityResult(int requestCode, int resultCode, Intent data)
+  {
+    super.onActivityResult(requestCode, resultCode, data);
+
+    Log.d("MwmSpeech", String.format("req=%d res=%d", requestCode, resultCode));
+
+    if ((requestCode == RC_VOICE_RECOGNITIN) && (resultCode == Activity.RESULT_OK))
+    {
+      final String result = InputUtils.getMostConfidentResult(data);
+      if (result != null)
+        mSearchBox.setText(result);
+    }
+  }
 }
diff --git a/android/src/com/mapswithme/util/InputUtils.java b/android/src/com/mapswithme/util/InputUtils.java
new file mode 100644
index 0000000000..c8dff65967
--- /dev/null
+++ b/android/src/com/mapswithme/util/InputUtils.java
@@ -0,0 +1,53 @@
+package com.mapswithme.util;
+
+import java.util.ArrayList;
+
+import android.content.Context;
+import android.content.Intent;
+import android.speech.RecognizerIntent;
+import android.util.Log;
+
+public class InputUtils
+{
+  private static Boolean mVoiceInputSupported = null;
+
+  public static boolean isVoiceInputSupported(Context context)
+  {
+    if (mVoiceInputSupported == null)
+    {
+      mVoiceInputSupported = Utils.isIntentSupported(context, new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH));
+    }
+    return mVoiceInputSupported;
+  }
+
+  public static Intent createIntentForVoiceRecognition(String promptText)
+  {
+    final Intent vrIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
+    vrIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH)
+            .putExtra(RecognizerIntent.EXTRA_PROMPT, promptText);
+
+    return vrIntent;
+  }
+
+  /**
+   * @param vrIntentResult
+   * @return most confident result or null if nothing is available
+   */
+  public static String getMostConfidentResult(Intent vrIntentResult)
+  {
+    final ArrayList<String> recongnizedStrings
+      = vrIntentResult.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
+
+    if (recongnizedStrings == null)
+    {
+      return null;
+    }
+
+    for (int i = 0; i < recongnizedStrings.size(); ++i)
+      Log.d("MwmSpeech", "RR: " + i + " " + recongnizedStrings.get(i));
+
+    return recongnizedStrings.isEmpty() ? null : recongnizedStrings.get(0);
+  }
+
+  private InputUtils() { /* static class */ }
+}