com.piusvelte.cloudset.android.ActionsFragment.java Source code

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Here is the source code for com.piusvelte.cloudset.android.ActionsFragment.java

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/*
 * CloudSet - Android devices settings synchronization
 * Copyright (C) 2013 Bryan Emmanuel
 *
 * This program 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.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Bryan Emmanuel piusvelte@gmail.com
 */
package com.piusvelte.cloudset.android;

import java.util.ArrayList;
import java.util.List;

import com.piusvelte.cloudset.gwt.server.deviceendpoint.model.SimpleAction;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.Toast;

public class ActionsFragment extends ListFragment implements LoaderManager.LoaderCallbacks<List<SimpleAction>> {

    private static final String TAG = "ActionsFragment";
    // load the actions for the subscription to this device
    private ActionsAdapter adapter;
    // subscriptions, filtered on the publisherId
    private List<SimpleAction> publications;
    private ArrayList<String> actions = new ArrayList<String>();

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.actions_fragment, container, false);
    }

    @Override
    public void onResume() {
        super.onResume();
    }

    private ActionsListener callback;

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            callback = (ActionsListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement ActionsListener");
        }
    }

    @Override
    public void onListItemClick(ListView list, View view, int position, long id) {
        super.onListItemClick(list, view, position, id);
        // block rapid checking/unchecking
        CheckBox actionCheckBox = (CheckBox) view.findViewById(R.id.enabled);
        if (actionCheckBox.isEnabled()) {
            actionCheckBox.setEnabled(false);
            updateDevice(ActionsIntentService.ACTIONS[position], actionCheckBox.isChecked());
        } else {
            Toast.makeText(getActivity().getApplicationContext(), getString(R.string.updating_sync),
                    Toast.LENGTH_SHORT).show();
        }
    }

    public interface ActionsListener {

        public Long getSubscriberId();

        public Long getPublisherId();

    }

    private static final String EXTRA_ACTION = "action";
    private static final String EXTRA_REMOVE = "remove";

    private void updateDevice(String action, boolean add) {
        Bundle extras = new Bundle();
        extras.putString(EXTRA_ACTION, action);
        extras.putBoolean(EXTRA_REMOVE, add);
        getLoaderManager().initLoader(getNextLoaderId(), extras, this);
    }

    private int getNextLoaderId() {
        int id = 1;

        while (loaderIds.contains(id)) {
            id++;
        }

        loaderIds.add(id);

        return id;
    }

    // the first loader is for all actions, the rest are for updating devices
    private ArrayList<Integer> loaderIds;
    private static final String EXTRA_LOADER_IDS = "loader_ids";

    @Override
    public void onSaveInstanceState(Bundle state) {
        super.onSaveInstanceState(state);
        state.putIntegerArrayList(EXTRA_LOADER_IDS, loaderIds);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        adapter = new ActionsAdapter(getActivity(), actions);
        setListAdapter(adapter);
        LoaderManager loaderManager = getLoaderManager();
        // attach the first loader for populating the publications
        loaderManager.initLoader(0, null, this);

        if (savedInstanceState != null && savedInstanceState.containsKey(EXTRA_LOADER_IDS)) {
            loaderIds = savedInstanceState.getIntegerArrayList(EXTRA_LOADER_IDS);
        } else {
            loaderIds = new ArrayList<Integer>();
        }

        // attach additional tasks for updating devices
        for (int i = 0, s = loaderIds.size(); i < s; i++) {
            loaderManager.initLoader(loaderIds.get(i), null, this);
        }
    }

    @Override
    public Loader<List<SimpleAction>> onCreateLoader(int arg0, Bundle args) {
        if (arg0 > 0) {
            if ((args != null) && args.containsKey(EXTRA_ACTION) && args.containsKey(EXTRA_REMOVE)) {
                return new ActionsLoader(getActivity(), callback.getSubscriberId(), callback.getPublisherId(),
                        publications, args.getString(EXTRA_ACTION), args.getBoolean(EXTRA_REMOVE));
            } else {
                return null;
            }
        } else {
            return new ActionsLoader(getActivity(), callback.getSubscriberId(), callback.getPublisherId());
        }
    }

    @Override
    public void onLoadFinished(Loader<List<SimpleAction>> loader, List<SimpleAction> publications) {
        if (loader.getId() > 0) {
            getLoaderManager().destroyLoader(loader.getId());
            loaderIds.remove((Integer) loader.getId());
        }

        this.publications = publications;

        // reload the adapter for the first loader
        if (loader.getId() == 0) {
            if (publications != null) {
                adapter.clear();

                for (String action : ActionsIntentService.ACTIONS) {
                    adapter.add(action);
                }

                adapter.notifyDataSetChanged(publications);
            } else {
                Toast.makeText(getActivity(), getString(R.string.action_load_error), Toast.LENGTH_SHORT).show();
            }
        } else {
            adapter.notifyDataSetChanged(publications, ((ActionsLoader) loader).getActionToEnable());
        }
    }

    @Override
    public void onLoaderReset(Loader<List<SimpleAction>> arg0) {
        // NO-OP
    }

}