com.digi.android.wva.fragments.EndpointsFragment.java Source code

Introduction

Here is the source code for com.digi.android.wva.fragments.EndpointsFragment.java

Source

/* 
 * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 * the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * 
 * Copyright (c) 2014 Digi International Inc., All Rights Reserved. 
 */

package com.digi.android.wva.fragments;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;

import com.digi.android.wva.R;
import com.digi.android.wva.adapters.EndpointsAdapter;
import com.digi.android.wva.model.EndpointConfiguration;

/**
 * {@link Fragment} used to display information about alarms and subscriptions
 * that have been set up. Currently the implementation simply displays
 * "No subscriptions." but in the future we will actually display useful
 * information.
 * @author mwadsten
 *
 */
public class EndpointsFragment extends ListFragment {
    private static final String DLG_TAG = "ept_cfg_dialog";

    public static EndpointsFragment newInstance() {
        return new EndpointsFragment();
    }

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

        if (getListAdapter() == null)
            setListAdapter(EndpointsAdapter.getInstance());
    }

    // This Lint suppression is because .show() commits the transaction, but
    // Lint is not aware of that, so it warns that the fragment transaction is
    // not committed.
    @SuppressLint("CommitTransaction")
    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        FragmentManager fm = getActivity().getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        // Look for pre-existing dialog and remove it if it exists.
        // This is needed because if you click an endpoint twice or more in
        // rapid succession, it WILL trigger this function more than once, and
        // without this check, more than one fragment dialog will appear.
        Fragment prev = fm.findFragmentByTag(DLG_TAG);
        if (prev != null)
            ft.remove(prev);
        ft.addToBackStack(null);

        EndpointConfiguration conf = (EndpointConfiguration) getListAdapter().getItem(position);

        new EndpointOptionsDialog().setConfig(conf).show(ft, DLG_TAG);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        //      Log.i("AlarmsFragment", "onCreateView");
        View v = inflater.inflate(R.layout.list_fragment_with_header, null);
        assert v != null;
        TextView header = (TextView) v.findViewById(R.id.log_header);
        if (header != null)
            header.setText(R.string.subscriptions_header);

        // Same as calling setEmptyText at whatever is the appropriate time to do that
        TextView empty = (TextView) v.findViewById(android.R.id.empty);
        if (empty != null)
            empty.setText("No endpoints.");
        return v;
    }
}