Merge "Use PackageMonitor in SearchManagerService"

package android.server.search;

import android.app.ActivityManagerNative;

import android.app.IActivityWatcher;

import com.android.internal.content.PackageMonitor;

import android.app.ISearchManager;

import android.app.ISearchManagerCallback;

import android.app.SearchManager;

import android.app.SearchableInfo;

import android.content.BroadcastReceiver;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.os.Handler;

import android.os.RemoteException;

import android.util.Log;

import java.util.List;

    // general debugging support

    private static final String TAG = "SearchManagerService";

    private static final boolean DBG = false;

    // Context that the service is running in.

    private final Context mContext;

    // This field is initialized in ensureSearchablesCreated(), and then never modified.

    // Only accessed by ensureSearchablesCreated() and getSearchables()

    // This field is initialized lazily in getSearchables(), and then never modified.

    private Searchables mSearchables;

    /**

        mContext = context;

    }

    private synchronized void ensureSearchablesCreated() {

        if (mSearchables != null) return;  // already created

    private synchronized Searchables getSearchables() {

        if (mSearchables == null) {

            mSearchables = new Searchables(mContext);

            mSearchables.buildSearchableList();

        IntentFilter packageFilter = new IntentFilter();

        packageFilter.addAction(Intent.ACTION_PACKAGE_ADDED);

        packageFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);

        packageFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);

        packageFilter.addDataScheme("package");

        mContext.registerReceiver(mPackageChangedReceiver, packageFilter);

        // Register for events related to sdcard installation.

        IntentFilter sdFilter = new IntentFilter();

        sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);

        sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);

        mContext.registerReceiver(mPackageChangedReceiver, sdFilter);

            new MyPackageMonitor().register(mContext, true);

        }

    private synchronized Searchables getSearchables() {

        ensureSearchablesCreated();

        return mSearchables;

    }

    /**

     * Refreshes the "searchables" list when packages are added/removed.

     */

    private BroadcastReceiver mPackageChangedReceiver = new BroadcastReceiver() {

    class MyPackageMonitor extends PackageMonitor {

        @Override

        public void onReceive(Context context, Intent intent) {

            String action = intent.getAction();

            if (Intent.ACTION_PACKAGE_ADDED.equals(action) ||

                    Intent.ACTION_PACKAGE_REMOVED.equals(action) ||

                    Intent.ACTION_PACKAGE_CHANGED.equals(action) ||

                    Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action) ||

                    Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {

                if (DBG) Log.d(TAG, "Got " + action);

        public void onSomePackagesChanged() {

            // Update list of searchable activities

            getSearchables().buildSearchableList();

                broadcastSearchablesChanged();

            }

        }

    };

    /**

     * Informs all listeners that the list of searchables has been updated.

     */

    void broadcastSearchablesChanged() {

            // Inform all listeners that the list of searchables has been updated.

            Intent intent = new Intent(SearchManager.INTENT_ACTION_SEARCHABLES_CHANGED);

            intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);

            mContext.sendBroadcast(intent);

        }

    }

    //

    // Searchable activities API