michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.home;
michael@0: 
michael@0: import org.mozilla.gecko.db.BrowserDB;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.database.Cursor;
michael@0: import android.os.Bundle;
michael@0: import android.support.v4.app.LoaderManager;
michael@0: import android.support.v4.app.LoaderManager.LoaderCallbacks;
michael@0: import android.support.v4.content.Loader;
michael@0: 
michael@0: /**
michael@0:  * Encapsulates the implementation of the search cursor loader.
michael@0:  */
michael@0: class SearchLoader {
michael@0:     // Key for search terms
michael@0:     private static final String KEY_SEARCH_TERM = "search_term";
michael@0: 
michael@0:     private SearchLoader() {
michael@0:     }
michael@0: 
michael@0:     public static Loader<Cursor> createInstance(Context context, Bundle args) {
michael@0:         if (args != null) {
michael@0:             final String searchTerm = args.getString(KEY_SEARCH_TERM);
michael@0:             return new SearchCursorLoader(context, searchTerm);
michael@0:         } else {
michael@0:             return new SearchCursorLoader(context, "");
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     private static Bundle createArgs(String searchTerm) {
michael@0:         Bundle args = new Bundle();
michael@0:         args.putString(SearchLoader.KEY_SEARCH_TERM, searchTerm);
michael@0: 
michael@0:         return args;
michael@0:     }
michael@0: 
michael@0:     public static void init(LoaderManager manager, int loaderId,
michael@0:                                LoaderCallbacks<Cursor> callbacks, String searchTerm) {
michael@0:         final Bundle args = createArgs(searchTerm);
michael@0:         manager.initLoader(loaderId, args, callbacks);
michael@0:     }
michael@0: 
michael@0:     public static void restart(LoaderManager manager, int loaderId,
michael@0:                                LoaderCallbacks<Cursor> callbacks, String searchTerm) {
michael@0:         final Bundle args = createArgs(searchTerm);
michael@0:         manager.restartLoader(loaderId, args, callbacks);
michael@0:     }
michael@0: 
michael@0:     public static class SearchCursorLoader extends SimpleCursorLoader {
michael@0:         // Max number of search results
michael@0:         private static final int SEARCH_LIMIT = 100;
michael@0: 
michael@0:         // The target search term associated with the loader
michael@0:         private final String mSearchTerm;
michael@0: 
michael@0:         public SearchCursorLoader(Context context, String searchTerm) {
michael@0:             super(context);
michael@0:             mSearchTerm = searchTerm;
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public Cursor loadCursor() {
michael@0:             return BrowserDB.filter(getContext().getContentResolver(), mSearchTerm, SEARCH_LIMIT);
michael@0:         }
michael@0: 
michael@0:         public String getSearchTerm() {
michael@0:             return mSearchTerm;
michael@0:         }
michael@0:     }
michael@0: 
michael@0: }