From 76098b7f7ac4f19af776fcad8413b582904bfdc2 Mon Sep 17 00:00:00 2001
From: Michael Chan <mchan@android.com>
Date: Tue, 2 Mar 2010 15:04:27 -0800
Subject: [PATCH] b/2310373 Show pairing dialogs if the device has been
 scanning for bt devices recently.

Change-Id: Iec9eb37a5e79b63cc3cf226e2ead6d9ed06d56a6
---
 .../bluetooth/BluetoothEventRedirector.java   | 16 +++++--
 .../bluetooth/LocalBluetoothManager.java      | 13 +++++-
 tests/AndroidManifest.xml                     |  1 +
 .../bluetooth_request_permission_test.xml     |  8 +++-
 tests/res/values/strings.xml                  |  2 +
 .../tests/BluetoothRequestPermissionTest.java | 45 ++++++++++++++++---
 6 files changed, 75 insertions(+), 10 deletions(-)

diff --git a/src/com/android/settings/bluetooth/BluetoothEventRedirector.java b/src/com/android/settings/bluetooth/BluetoothEventRedirector.java
index c1a2116023a..dbdf6c156e8 100644
--- a/src/com/android/settings/bluetooth/BluetoothEventRedirector.java
+++ b/src/com/android/settings/bluetooth/BluetoothEventRedirector.java
@@ -16,6 +16,9 @@
 
 package com.android.settings.bluetooth;
 
+import com.android.settings.R;
+import com.android.settings.bluetooth.LocalBluetoothProfileManager.Profile;
+
 import android.bluetooth.BluetoothA2dp;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothClass;
@@ -25,11 +28,9 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.SharedPreferences;
 import android.util.Log;
 
-import com.android.settings.R;
-import com.android.settings.bluetooth.LocalBluetoothProfileManager.Profile;
-
 /**
  * BluetoothEventRedirector receives broadcasts and callbacks from the Bluetooth
  * API and dispatches the event on the UI thread to the right class in the
@@ -53,9 +54,11 @@ public class BluetoothEventRedirector {
                                         BluetoothAdapter.ERROR);
                 mManager.setBluetoothStateInt(state);
             } else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_STARTED)) {
+                persistDiscoveringTimestamp();
                 mManager.onScanningStateChanged(true);
 
             } else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
+                persistDiscoveringTimestamp();
                 mManager.onScanningStateChanged(false);
 
             } else if (action.equals(BluetoothDevice.ACTION_FOUND)) {
@@ -191,4 +194,11 @@ public class BluetoothEventRedirector {
         }
         return null;
     }
+
+    private void persistDiscoveringTimestamp() {
+        SharedPreferences.Editor editor = mManager.getSharedPreferences().edit();
+        editor.putLong(LocalBluetoothManager.SHARED_PREFERENCES_KEY_DISCOVERING_TIMESTAMP,
+                System.currentTimeMillis());
+        editor.commit();
+    }
 }
diff --git a/src/com/android/settings/bluetooth/LocalBluetoothManager.java b/src/com/android/settings/bluetooth/LocalBluetoothManager.java
index 43d4343dd3c..2ffb1393d5e 100644
--- a/src/com/android/settings/bluetooth/LocalBluetoothManager.java
+++ b/src/com/android/settings/bluetooth/LocalBluetoothManager.java
@@ -72,6 +72,9 @@ public class LocalBluetoothManager {
     // of raising notifications
     private static long GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND = 60 * 1000;
 
+    public static final String SHARED_PREFERENCES_KEY_DISCOVERING_TIMESTAMP =
+        "last_discovering_time";
+
     private static final String SHARED_PREFERENCES_KEY_LAST_SELECTED_DEVICE =
         "last_selected_device";
 
@@ -314,7 +317,7 @@ public class LocalBluetoothManager {
         long currentTimeMillis = System.currentTimeMillis();
         SharedPreferences sharedPreferences = getSharedPreferences();
 
-        // If the device was in discoverable mode recently
+        // If the device was in discoverABLE mode recently
         long lastDiscoverableEndTime = sharedPreferences.getLong(
                 BluetoothDiscoverableEnabler.SHARED_PREFERENCES_KEY_DISCOVERABLE_END_TIMESTAMP, 0);
         if ((lastDiscoverableEndTime + GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND)
@@ -322,6 +325,14 @@ public class LocalBluetoothManager {
             return true;
         }
 
+        // If the device was discoverING recently
+        if (mAdapter != null && mAdapter.isDiscovering()) {
+            return true;
+        } else if ((sharedPreferences.getLong(SHARED_PREFERENCES_KEY_DISCOVERING_TIMESTAMP, 0) +
+                GRACE_PERIOD_TO_SHOW_DIALOGS_IN_FOREGROUND) > currentTimeMillis) {
+            return true;
+        }
+
         // If the device was picked in the device picker recently
         if (deviceAddress != null) {
             String lastSelectedDevice = sharedPreferences.getString(
diff --git a/tests/AndroidManifest.xml b/tests/AndroidManifest.xml
index 8a0ce218230..6b9e0501d1d 100644
--- a/tests/AndroidManifest.xml
+++ b/tests/AndroidManifest.xml
@@ -18,6 +18,7 @@
     package="com.android.settings.tests">
 
     <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
 
     <application>
         <uses-library android:name="android.test.runner" />
diff --git a/tests/res/layout/bluetooth_request_permission_test.xml b/tests/res/layout/bluetooth_request_permission_test.xml
index 4d54544a644..0a5aec0dc7f 100644
--- a/tests/res/layout/bluetooth_request_permission_test.xml
+++ b/tests/res/layout/bluetooth_request_permission_test.xml
@@ -37,10 +37,16 @@
             android:layout_weight="1"
             android:text="@string/enable" />
 
-        <Button android:id="@+id/discover"
+        <Button android:id="@+id/discoverable"
             android:layout_width="0dip"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:text="@string/discoverable" />
+
+        <Button android:id="@+id/scan"
+            android:layout_width="0dip"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/start_scan" />
     </LinearLayout>
 </LinearLayout>
diff --git a/tests/res/values/strings.xml b/tests/res/values/strings.xml
index b06782feed9..f8a048134a4 100644
--- a/tests/res/values/strings.xml
+++ b/tests/res/values/strings.xml
@@ -20,4 +20,6 @@
     <!-- Test only. Do not translate. -->
     <string name="enable">Enable</string>
     <string name="discoverable">Discoverable</string>
+    <string name="start_scan">Start Scan</string>
+    <string name="stop_scan">Stop Scan</string>
 </resources>
diff --git a/tests/src/com/android/settings/tests/BluetoothRequestPermissionTest.java b/tests/src/com/android/settings/tests/BluetoothRequestPermissionTest.java
index 105c98e8ade..8064e3a4989 100644
--- a/tests/src/com/android/settings/tests/BluetoothRequestPermissionTest.java
+++ b/tests/src/com/android/settings/tests/BluetoothRequestPermissionTest.java
@@ -33,7 +33,7 @@ import android.widget.ListView;
 
 public class BluetoothRequestPermissionTest extends Activity {
     private static final String TAG = "BluetoothRequestPermissionTest";
-
+    BluetoothAdapter mAdapter;
     private ArrayAdapter<String> mMsgAdapter;
 
     private class BtOnClickListener implements OnClickListener {
@@ -48,23 +48,50 @@ public class BluetoothRequestPermissionTest extends Activity {
         }
     }
 
+    private class BtScanOnClickListener implements OnClickListener {
+        public void onClick(View v) {
+            Button scanButton = (Button) v;
+            if (mAdapter.isDiscovering()) {
+                mAdapter.cancelDiscovery();
+                scanButton.setText(R.string.start_scan);
+            } else {
+                mAdapter.startDiscovery();
+                scanButton.setText(R.string.stop_scan);
+            }
+        }
+    }
+
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
         setContentView(R.layout.bluetooth_request_permission_test);
+        mAdapter = BluetoothAdapter.getDefaultAdapter();
 
         Button enable = (Button) findViewById(R.id.enable);
         enable.setOnClickListener(new BtOnClickListener(true /* enable */));
 
-        Button discover = (Button) findViewById(R.id.discover);
-        discover.setOnClickListener(new BtOnClickListener(false /* enable & discoverable */));
+        Button discoverable = (Button) findViewById(R.id.discoverable);
+        discoverable.setOnClickListener(new BtOnClickListener(false /* enable & discoverable */));
+
+        Button scanButton = (Button) findViewById(R.id.scan);
+        scanButton.setOnClickListener(new BtScanOnClickListener());
+        if (mAdapter.isDiscovering()) {
+            scanButton.setText(R.string.stop_scan);
+        } else {
+            scanButton.setText(R.string.start_scan);
+        }
 
         mMsgAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1);
 
         ListView listView = (ListView) findViewById(R.id.msg_container);
         listView.setAdapter(mMsgAdapter);
 
-        registerReceiver(mReceiver, new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
+        filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
+        filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
+        filter.addAction(BluetoothDevice.ACTION_FOUND);
+        registerReceiver(mReceiver, filter);
         addMsg("Initialized");
     }
 
@@ -113,7 +140,8 @@ public class BluetoothRequestPermissionTest extends Activity {
         public void onReceive(Context context, Intent intent) {
             if (intent == null)
                 return;
-            if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(intent.getAction())) {
+            String action = intent.getAction();
+            if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {
                 String stateStr = "???";
                 switch (intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothDevice.ERROR)) {
                     case BluetoothAdapter.STATE_OFF:
@@ -130,6 +158,13 @@ public class BluetoothRequestPermissionTest extends Activity {
                         break;
                 }
                 addMsg("Bluetooth status = " + stateStr);
+            } else if (action.equals(BluetoothDevice.ACTION_FOUND)) {
+                String name = intent.getStringExtra(BluetoothDevice.EXTRA_NAME);
+                addMsg("Found: " + name);
+            } else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_STARTED)) {
+                addMsg("Scan started...");
+            } else if (action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
+                addMsg("Scan ended");
             }
         }
     };