de.stadtrallye.rallyesoft.fragments.AssistantGroupsFragment.java Source code

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Here is the source code for de.stadtrallye.rallyesoft.fragments.AssistantGroupsFragment.java

Source

/*
 * Copyright (c) 2014 Jakob Wenzel, Ramon Wirsch.
 *
 * This file is part of RallyeSoft.
 *
 * RallyeSoft is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * RallyeSoft is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with RallyeSoft. If not, see <http://www.gnu.org/licenses/>.
 */

package de.stadtrallye.rallyesoft.fragments;

import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.ListFragment;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import java.util.List;

import de.rallye.model.structures.Group;
import de.rallye.model.structures.ServerInfo;
import de.stadtrallye.rallyesoft.R;
import de.stadtrallye.rallyesoft.model.IServer;
import de.stadtrallye.rallyesoft.model.Server;
import de.stadtrallye.rallyesoft.threading.Threading;
import de.stadtrallye.rallyesoft.uimodel.GroupListAdapter;
import de.stadtrallye.rallyesoft.uimodel.IConnectionAssistant;

/**
 * Page of ConnectionAssistant: choose a group to login to
 * If the Assistant already knows the group, highlight it
 */
public class AssistantGroupsFragment extends ListFragment
        implements IServer.IServerListener, AdapterView.OnItemClickListener {

    private IConnectionAssistant assistant;
    private GroupListAdapter groupAdapter;
    private Server server;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setRetainInstance(true);

    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        setEmptyText(getString(R.string.loading_groups));

        try {
            assistant = (IConnectionAssistant) getActivity();
        } catch (ClassCastException e) {
            throw new ClassCastException(getActivity().toString() + " must implement IConnectionAssistant");
        }
    }

    private void restoreChoice(ListView list) {
        Integer pos = groupAdapter.findPosition(assistant.getGroup());

        if (pos != null) {
            list.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
            list.setItemChecked(pos, true);
        }
    }

    @Override
    public void onStart() {
        super.onStart();

        server = assistant.getServer();
        server.addListener(this);

        List<Group> groups = server.getAvailableGroups();
        groupAdapter = new GroupListAdapter(getActivity(), groups, server);
        ListView list = getListView();
        setListAdapter(groupAdapter);
        if (groups == null) {
            server.updateAvailableGroups();
            //waiting
        } else {
            restoreChoice(list);
        }

        list.setOnItemClickListener(this);
    }

    @Override
    public void onStop() {
        super.onStop();

        server.removeListener(this);
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        assistant.setGroup((int) id);
        assistant.next();
    }

    @Override
    public void onLoginSuccessful() {

    }

    @Override
    public void onConnectionFailed(Exception e, int status) {
        Toast.makeText(getActivity(), R.string.invalid_server, Toast.LENGTH_SHORT).show();
        assistant.back();
    }

    @Override
    public void onServerInfoChanged(ServerInfo info) {

    }

    @Override
    public void onAvailableGroupsChanged(List<Group> groups) {
        groupAdapter.changeGroups(groups);

        restoreChoice(getListView());
    }

    @Override
    public Handler getCallbackHandler() {
        return Threading.getUiExecutor();
    }
}