gecko/mobile/android/base/home/SearchLoader.java

79 lines
2.5 KiB
Java

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