Android Open Source - O365-Android-Start Calendar Event List Fragment

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The source code is released under:
MIT License
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Java Source Code

/*
 *  Copyright (c) Microsoft. All rights reserved. Licensed under the MIT license. See full license at the bottom of this file.
 *///from  w w  w.  j av  a 2s .c o m

package com.microsoft.office365.starter.views;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.app.ListFragment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.microsoft.office365.starter.interfaces.OnEventsAddedListener;
import com.microsoft.office365.starter.models.O365CalendarModel;

/**
 * A list fragment representing a list of CalendarEvents. This fragment also supports tablet devices
 * by allowing list items to be given an 'activated' state upon selection. This helps indicate which
 * item is currently being viewed in a {@link CalendarEventDetailFragment}.
 * <p>
 * Activities containing this fragment MUST implement the {@link Callbacks} interface.
 */
public class CalendarEventListFragment extends ListFragment implements OnEventsAddedListener {

    /**
     * The serialization (saved instance state) Bundle key representing the activated item position.
     * Only used on tablets.
     */
    private static final String STATE_ACTIVATED_POSITION = "activated_position";

    /**
     * The fragment's current callback object, which is notified of list item clicks.
     */
    private Callbacks mCallbacks = sDummyCallbacks;

    /** The m stored rotation. */
    private int mStoredRotation;
    private ProgressDialog mDialog;
    // public O365CalendarModel mCalendarModel;

    /**
     * The current activated item position. Only used on tablets.
     */
    private int mActivatedPosition = ListView.INVALID_POSITION;
    private CalendarEventListActivity mParentActivity;
    private CalendarEventListFragment mCalendarEventListFragment;

    /**
     * A callback interface that all activities containing this fragment must implement. This
     * mechanism allows activities to be notified of item selections.
     */
    public interface Callbacks {
        /**
         * Callback for when an item has been selected.
         */
        public void onItemSelected(String id);
    }

    /**
     * A dummy implementation of the {@link Callbacks} interface that does nothing. Used only when
     * this fragment is not attached to an activity.
     */
    private static Callbacks sDummyCallbacks = new Callbacks() {
        @Override
        public void onItemSelected(String id) {
        }
    };

    /**
     * Mandatory empty constructor for the fragment manager to instantiate the fragment (e.g. upon
     * screen orientation changes).
     */
    public CalendarEventListFragment() {
    }

   
    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        // Restore the previously serialized activated item position.
        if (savedInstanceState != null
                && savedInstanceState.containsKey(STATE_ACTIVATED_POSITION)) {
            setActivatedPosition(savedInstanceState
                    .getInt(STATE_ACTIVATED_POSITION));
        }
    }

    @Override
    public void OnEventsAdded(final setEventCollection eventCollection) {
        getActivity().runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if (!eventCollection.getEventCollection().isEmpty())
                {

                    ListView myList = (ListView)mParentActivity.findViewById(android.R.id.list);
                    
                    mCalendarEventListFragment
                            .setListAdapter(new ArrayAdapter<O365CalendarModel.O365Calendar_Event>(
                                    mParentActivity,
                                    android.R.layout.simple_list_item_activated_1,
                                    android.R.id.text1, eventCollection.getEventCollection()));

                    if (mDialog.isShowing())
                    {
                        mDialog.dismiss();
                        mParentActivity.setRequestedOrientation(mStoredRotation);
                    }
                    Toast.makeText(mParentActivity, "Events loaded",
                            Toast.LENGTH_LONG).show();
                }
                else
                {
                    if (mDialog.isShowing())
                    {
                        mDialog.dismiss();
                        mParentActivity.setRequestedOrientation(mStoredRotation);
                    }
                    Toast.makeText(mParentActivity, "No events to show",
                            Toast.LENGTH_LONG).show();
                }
            }
        });
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        // Activities containing this fragment must implement its callbacks.
        if (!(activity instanceof Callbacks)) {
            throw new IllegalStateException(
                    "Activity must implement fragment's callbacks.");
        }
        mCallbacks = (Callbacks) activity;
    }

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

        // Reset the active callbacks interface to the dummy implementation.
        mCallbacks = sDummyCallbacks;
    }

    @Override
    public void onListItemClick(ListView listView, View view, int position,
            long id) {
        super.onListItemClick(listView, view, position, id);

        // Notify the active callbacks interface (the activity, if the
        // fragment is attached to one) that an item has been selected.

        // This smells. Is there a way to know what to cast Activity to?
        CalendarEventListActivity parentActivity = (CalendarEventListActivity) getActivity();
        mCallbacks.onItemSelected(parentActivity.calendarEvents.ITEMS.get(position).getID());
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        if (mActivatedPosition != ListView.INVALID_POSITION) {
            // Serialize and persist the activated item position.
            outState.putInt(STATE_ACTIVATED_POSITION, mActivatedPosition);
        }
    }

    /**
     * Turns on activate-on-click mode. When this mode is on, list items will be given the
     * 'activated' state when touched.
     */
    public void setActivateOnItemClick(boolean activateOnItemClick) {
        // When setting CHOICE_MODE_SINGLE, ListView will automatically
        // give items the 'activated' state when touched.
        getListView().setChoiceMode(
                activateOnItemClick ? ListView.CHOICE_MODE_SINGLE
                        : ListView.CHOICE_MODE_NONE);
    }

    private void setActivatedPosition(int position) {
        if (position == ListView.INVALID_POSITION) {
            getListView().setItemChecked(mActivatedPosition, false);
        } else {
            getListView().setItemChecked(position, true);
        }
        mActivatedPosition = position;
    }
}
// *********************************************************
//
// O365-Android-Start, https://github.com/OfficeDev/O365-Android-Start
//
// Copyright (c) Microsoft Corporation
// All rights reserved.
//
// MIT License:
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// *********************************************************
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