am 6dd1bb71: Merge change 2170 into donut (62857dc0) · Commits · e / os / android_frameworks_base

core/java/android/app/SearchDialog.java

+68 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,11 @@ import android.content.res.Resources;
		import android.database.Cursor;
		import android.graphics.drawable.AnimationDrawable;
		import android.graphics.drawable.Drawable;
		import android.location.Criteria;
		import android.location.Location;
		import android.location.LocationListener;
		import android.location.LocationManager;
		import android.location.LocationProvider;
		import android.net.Uri;
		import android.os.Bundle;
		import android.os.SystemClock;
		@@ -145,6 +150,15 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
		private final WeakHashMap<String, Drawable> mOutsideDrawablesCache =
		new WeakHashMap<String, Drawable>();

		// Objects we keep around for requesting location updates when the dialog is started
		// (and canceling them when the dialog is stopped). We don't actually make use of the
		// updates ourselves here, so the LocationListener is just a dummy which doesn't do
		// anything. We only do this here so that other suggest providers which wish to provide
		// location-based suggestions are more likely to get a good fresh location.
		private LocationManager mLocationManager;
		private LocationProvider mLocationProvider;
		private LocationListener mDummyLocationListener;

		/**
		* Constructor - fires it up and makes it look like the search UI.
		*
		@@ -221,6 +235,37 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
		RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);

		mVoiceAppSearchIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

		mLocationManager =
		(LocationManager) getContext().getSystemService(Context.LOCATION_SERVICE);

		if (mLocationManager != null) {
		Criteria criteria = new Criteria();
		criteria.setAccuracy(Criteria.ACCURACY_COARSE);

		String providerName = mLocationManager.getBestProvider(criteria, true);

		if (providerName != null) {
		mLocationProvider = mLocationManager.getProvider(providerName);
		}

		// Just a dumb listener that doesn't do anything - requesting location updates here
		// is only intended to give location-based suggestion providers the best chance
		// of getting a good fresh location.
		mDummyLocationListener = new LocationListener() {
		public void onLocationChanged(Location location) {
		}

		public void onProviderDisabled(String provider) {
		}

		public void onProviderEnabled(String provider) {
		}

		public void onStatusChanged(String provider, int status, Bundle extras) {
		}
		};
		}
		}

		/**
		@@ -363,6 +408,8 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
		// receive broadcasts
		getContext().registerReceiver(mBroadcastReceiver, mCloseDialogsFilter);
		getContext().registerReceiver(mBroadcastReceiver, mPackageFilter);

		startLocationUpdates();
		}

		/**
		@@ -375,6 +422,8 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
		public void onStop() {
		super.onStop();

		stopLocationUpdates();

		// TODO: Removing the listeners means that they never get called, since
		// Dialog.dismissDialog() calls onStop() before sendDismissMessage().
		setOnCancelListener(null);
		@@ -398,6 +447,25 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
		mPreviousComponents = null;
		}

		/**
		* Asks the LocationManager for location updates so that it goes and gets a fresh location
		* if needed.
		*/
		private void startLocationUpdates() {
		if (mLocationManager != null && mLocationProvider != null) {
		mLocationManager.requestLocationUpdates(mLocationProvider.getName(),
		0, 0, mDummyLocationListener, getContext().getMainLooper());
		}

		}

		/**
		* Makes sure to stop listening for location updates to save battery.
		*/
		private void stopLocationUpdates() {
		mLocationManager.removeUpdates(mDummyLocationListener);
		}

		/**
		* Sets the search dialog to the 'working' state, which shows a working spinner in the
		* right hand size of the text field.