dev.drsoran.moloko.fragments.TaskEditFragment.java Source code

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Here is the source code for dev.drsoran.moloko.fragments.TaskEditFragment.java

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/* 
 *   Copyright (c) 2012 Ronny Rhricht
 *
 *   This file is part of Moloko.
 *
 *   Moloko 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.
 *
 *   Moloko 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 Moloko.  If not, see <http://www.gnu.org/licenses/>.
 *
 *   Contributors:
 * Ronny Rhricht - implementation
 */

package dev.drsoran.moloko.fragments;

import java.util.Collections;
import java.util.List;

import android.database.ContentObserver;
import android.os.Bundle;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;

import com.mdt.rtm.data.RtmTask;

import dev.drsoran.moloko.IHandlerToken;
import dev.drsoran.moloko.MolokoApp;
import dev.drsoran.moloko.R;
import dev.drsoran.moloko.annotations.InstanceState;
import dev.drsoran.moloko.loaders.TaskLoader;
import dev.drsoran.moloko.util.Intents;
import dev.drsoran.moloko.util.MolokoDateUtils;
import dev.drsoran.moloko.util.Queries;
import dev.drsoran.provider.Rtm.RawTasks;
import dev.drsoran.provider.Rtm.Tasks;
import dev.drsoran.rtm.Task;

public class TaskEditFragment extends AbstractTaskEditFragment {
    private final IHandlerToken handler = MolokoApp.acquireHandlerToken();

    private final TaskLoaderHandler taskLoaderHandler = new TaskLoaderHandler();

    @InstanceState(key = Intents.Extras.KEY_TASK)
    private Task task;

    private ContentObserver taskChangesObserver;

    public final static TaskEditFragment newInstance(Bundle config) {
        final TaskEditFragment fragment = new TaskEditFragment();

        fragment.setArguments(config);

        return fragment;
    }

    public TaskEditFragment() {
        registerAnnotatedConfiguredInstance(this, TaskEditFragment.class);
    }

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

    @Override
    public void onDestroy() {
        unregisterForTaskDeletedByBackgroundSync();
        handler.release();

        super.onDestroy();
    }

    @Override
    public Bundle determineInitialValues() {
        final Task task = getTaskAssertNotNull();

        final Bundle initialValues = new Bundle();

        initialValues.putString(Tasks.TASKSERIES_NAME, task.getName());
        initialValues.putString(Tasks.LIST_ID, task.getListId());
        initialValues.putString(Tasks.PRIORITY, RtmTask.convertPriority(task.getPriority()));
        initialValues.putString(Tasks.TAGS, TextUtils.join(Tasks.TAGS_SEPARATOR, task.getTags()));
        initialValues.putLong(Tasks.DUE_DATE, MolokoDateUtils.getTime(task.getDue(), Long.valueOf(-1)));
        initialValues.putBoolean(Tasks.HAS_DUE_TIME, task.hasDueTime());
        initialValues.putString(Tasks.RECURRENCE, task.getRecurrence());
        initialValues.putBoolean(Tasks.RECURRENCE_EVERY, task.isEveryRecurrence());
        initialValues.putString(Tasks.ESTIMATE, task.getEstimate());
        initialValues.putLong(Tasks.ESTIMATE_MILLIS, task.getEstimateMillis());
        initialValues.putString(Tasks.LOCATION_ID, task.getLocationId());
        initialValues.putString(Tasks.URL, task.getUrl());

        return initialValues;
    }

    @Override
    protected void initializeHeadSection() {
        final Task task = getTaskAssertNotNull();
        defaultInitializeHeadSectionImpl(task);
    }

    @Override
    protected void registerInputListeners() {
        super.registerInputListeners();

        getContentView().findViewById(R.id.task_edit_tags_btn_change).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                listener.onChangeTags(getTags());
            }
        });
    }

    public Task getTaskAssertNotNull() {
        if (task == null)
            throw new AssertionError("expected task to be not null");

        return task;
    }

    @Override
    protected List<Task> getEditedTasks() {
        return Collections.singletonList(getTaskAssertNotNull());
    }

    private void registerForTaskDeletedByBackgroundSync() {
        taskChangesObserver = new ContentObserver(MolokoApp.getHandler()) {
            @Override
            public void onChange(boolean selfChange) {
                getSherlockActivity().getSupportLoaderManager().initLoader(TaskLoader.ID, Bundle.EMPTY,
                        TaskEditFragment.this.taskLoaderHandler);
            }
        };

        getSherlockActivity().getContentResolver().registerContentObserver(
                Queries.contentUriWithId(RawTasks.CONTENT_URI, getTaskAssertNotNull().getId()), false,
                taskChangesObserver);
    }

    private void unregisterForTaskDeletedByBackgroundSync() {
        getSherlockActivity().getContentResolver().unregisterContentObserver(taskChangesObserver);
        taskChangesObserver = null;
    }

    private class TaskLoaderHandler implements LoaderCallbacks<Task> {
        @Override
        public Loader<Task> onCreateLoader(int id, Bundle args) {
            return new TaskLoader(getSherlockActivity(), getTaskAssertNotNull().getId());
        }

        @Override
        public void onLoadFinished(Loader<Task> loader, Task data) {
            // If the database changed by a background sync and the assigned note
            // has been deleted, then we ask the user if he wants to keep his changes
            // or drop the note.
            if (data == null) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        if (listener != null) {
                            listener.onBackgroundDeletion(getTaskAssertNotNull());
                        }
                    }
                });
            }
        }

        @Override
        public void onLoaderReset(Loader<Task> loader) {
        }
    }
}