com.granita.tasks.homescreen.TaskListSelectionFragment.java Source code

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Here is the source code for com.granita.tasks.homescreen.TaskListSelectionFragment.java

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/*
 * Copyright (C) 2014 Marten Gajda <marten@dmfs.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package com.granita.tasks.homescreen;

import java.util.ArrayList;

import com.granita.provider.tasks.TaskContract;
import com.granita.provider.tasks.TaskContract.TaskLists;
import com.granita.tasks.R;
import com.granita.tasks.utils.TasksListCursorAdapter;
import com.granita.tasks.utils.TasksListCursorAdapter.SelectionEnabledListener;

import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;

/**
 * Provides the selection of task list.
 * 
 * @author Tobias Reinsch <tobias@dmfs.org>
 * 
 */
public class TaskListSelectionFragment extends ListFragment implements LoaderManager.LoaderCallbacks<Cursor> {

    public static final String LIST_LOADER_URI = "uri";
    public static final String LIST_LOADER_FILTER = "filter";

    public static final String LIST_LOADER_VISIBLE_LISTS_FILTER = TaskLists.SYNC_ENABLED + "=1";

    /**
     * Projection into the task list.
     */
    private final static String[] TASK_LIST_PROJECTION = new String[] { TaskContract.TaskListColumns._ID,
            TaskContract.TaskListColumns.LIST_NAME, TaskContract.TaskListSyncColumns.ACCOUNT_TYPE,
            TaskContract.TaskListSyncColumns.ACCOUNT_NAME, TaskContract.TaskListColumns.LIST_COLOR };

    private TasksListCursorAdapter mTaskListAdapter;
    private Activity mActivity;
    private ListView mTaskList;
    private String mAuthority;
    private onSelectionListener mListener;
    private TextView mButtonOk;
    private TextView mButtonCancel;

    //custom start
    public TaskListSelectionFragment(onSelectionListener listener) {
        mListener = listener;
    }

    public void setMListener(onSelectionListener listener) {
        mListener = listener;
    }
    //custom end

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        mActivity = activity;
        mAuthority = getString(R.string.org_dmfs_tasks_authority);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_task_list_selection, container, false);
        mButtonOk = (TextView) rootView.findViewById(android.R.id.button1);
        mButtonCancel = (TextView) rootView.findViewById(android.R.id.button2);

        mButtonOk.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mListener != null) {
                    mListener.onSelection(mTaskListAdapter.getSelectedLists());
                }

            }
        });
        mButtonCancel.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mListener != null) {
                    mListener.onSelectionCancel();
                }

            }
        });

        return rootView;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        mTaskList = getListView();
        mTaskListAdapter = new TasksListCursorAdapter(mActivity);
        mTaskList.setAdapter(mTaskListAdapter);

        mTaskListAdapter.setSelectionEnabledListener(new SelectionEnabledListener() {
            @Override
            public void onSelectionEnabled() {
                mButtonOk.setEnabled(true);
            }

            @Override
            public void onSelectionDisabled() {
                mButtonOk.setEnabled(false);

            }
        });

        Bundle bundle = new Bundle();
        bundle.putParcelable(LIST_LOADER_URI, TaskLists.getContentUri(mAuthority));
        bundle.putString(LIST_LOADER_FILTER, LIST_LOADER_VISIBLE_LISTS_FILTER);
        getLoaderManager().restartLoader(-2, bundle, this);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle bundle) {
        return new CursorLoader(mActivity, (Uri) bundle.getParcelable(LIST_LOADER_URI), TASK_LIST_PROJECTION,
                bundle.getString(LIST_LOADER_FILTER), null, null);
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
        mTaskListAdapter.changeCursor(cursor);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        mTaskListAdapter.changeCursor(null);
    }

    public interface onSelectionListener {
        public void onSelection(ArrayList<Long> selectedLists);

        public void onSelectionCancel();
    }

}