LastViewedPatientsFragment.java

/*
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */

package org.openmrs.mobile.activities.lastviewedpatients;

import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ProgressBar;
import android.widget.TextView;

import org.openmrs.mobile.R;
import org.openmrs.mobile.activities.ACBaseFragment;
import org.openmrs.mobile.activities.patientdashboard.PatientDashboardActivity;
import org.openmrs.mobile.models.Patient;
import org.openmrs.mobile.utilities.ApplicationConstants;
import org.openmrs.mobile.utilities.NetworkUtils;
import org.openmrs.mobile.utilities.ToastUtil;

import java.io.Serializable;
import java.util.Collections;
import java.util.List;
import java.util.Set;

public class LastViewedPatientsFragment extends ACBaseFragment<LastViewedPatientsContract.Presenter> implements LastViewedPatientsContract.View {

    private static final String PATIENT_LIST = "patient_list";
    private static final String SELECTED_PATIENT_POSITIONS = "selected_patient_positions";
    private TextView mEmptyList;
    private ProgressBar progressBar;
    private RecyclerView mPatientsRecyclerView;
    private LinearLayoutManager linearLayoutManager;
    private LastViewedPatientRecyclerViewAdapter mAdapter;
    public SwipeRefreshLayout mSwipeRefreshLayout;


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.fragment_last_viewed_patients, container, false);
        mPatientsRecyclerView = ((RecyclerView) root.findViewById(R.id.lastViewedPatientRecyclerView));
        linearLayoutManager = new LinearLayoutManager(this.getActivity());
        mPatientsRecyclerView.setLayoutManager(linearLayoutManager);
        progressBar = (ProgressBar) root.findViewById(R.id.patientRecyclerViewLoading);
        mEmptyList = (TextView) root.findViewById(R.id.emptyLastViewedPatientList);
        mSwipeRefreshLayout = ((SwipeRefreshLayout) root.findViewById(R.id.swiperefreshLastPatients));
        mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                if (NetworkUtils.hasNetwork()) {
                    mPresenter.refresh();
                    mAdapter.finishActionMode();
                }else {
                    ToastUtil.error("No Internet Connection");
                    getActivity().finish();
                }
            }
        });

        mPatientsRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                if (!recyclerView.canScrollVertically(1)) {
                    mPresenter.loadMorePatients();
                }
            }
        });
        return root;
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        if (mAdapter != null) {
            mPresenter.onSaveInstanceState(outState);
            List<Patient> patientList = mAdapter.getPatients();
            outState.putSerializable(PATIENT_LIST, (Serializable) patientList);
            outState.putSerializable(SELECTED_PATIENT_POSITIONS, (Serializable) mAdapter.getSelectedPatientPositions());
        }
    }

    @Override
    public void onViewStateRestored(@Nullable Bundle savedInstanceState) {
        super.onViewStateRestored(savedInstanceState);
        if (savedInstanceState != null) {
            List<Patient> patientList = (List<Patient>) savedInstanceState.getSerializable(PATIENT_LIST);
            if (patientList == null) {
                mPresenter.subscribe();
            } else {
                updateList(patientList);
                mPresenter.setStartIndex(savedInstanceState.getInt(ApplicationConstants.BundleKeys.PATIENTS_START_INDEX, 0));
                Set<Integer> selectedPatientPositions = (Set<Integer>) savedInstanceState.getSerializable(SELECTED_PATIENT_POSITIONS);
                if (selectedPatientPositions != null && !selectedPatientPositions.isEmpty()) {
                    mAdapter.startActionMode();
                    mAdapter.setSelectedPatientPositions(selectedPatientPositions);
                }
            }
        } else {
            mPresenter.subscribe();
        }
    }

    @Override
    public void enableSwipeRefresh(boolean enabled) {
        mSwipeRefreshLayout.setEnabled(enabled);
    }

    @Override
    public void setProgressBarVisibility(boolean visibility) {
        progressBar.setVisibility(visibility ? View.VISIBLE : View.GONE);
    }

    @Override
    public void setEmptyListVisibility(boolean visibility) {
        mEmptyList.setVisibility(visibility ? View.VISIBLE : View.GONE);
    }

    @Override
    public void setListVisibility(boolean visibility) {
        mPatientsRecyclerView.setVisibility(visibility ? View.VISIBLE : View.GONE);
    }

    @Override
    public void setEmptyListText(String text) {
        mEmptyList.setText(text);
    }

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

    public void updateList(List<Patient> patientList) {
        mAdapter = new LastViewedPatientRecyclerViewAdapter(this.getActivity(), patientList, this);
        mPatientsRecyclerView.setAdapter(mAdapter);
    }

    public boolean isRefreshing() {
        return mSwipeRefreshLayout.isRefreshing();
    }

    public void stopRefreshing() {
        mSwipeRefreshLayout.setRefreshing(false);
    }

    @Override
    public void showErrorToast(String message) {
        ToastUtil.error(message);
    }

    @Override
    public void showOpenPatientSnackbar(final Long patientId) {
        FrameLayout frameLayout = (FrameLayout) mSwipeRefreshLayout.findViewById(R.id.swipe_container);
        Snackbar snackbar = Snackbar.make(frameLayout, getResources().getString(R.string.snackbar_info_patient_downloaded), Snackbar.LENGTH_LONG);
        snackbar.setActionTextColor(Color.WHITE);
        View sbView = snackbar.getView();
        TextView textView = (TextView) sbView.findViewById(android.support.design.R.id.snackbar_text);
        textView.setTextColor(Color.WHITE);
        snackbar.setAction(getResources().getString(R.string.snackbar_action_open), new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openPatientDashboardActivity(patientId);
            }
        });
        snackbar.show();
    }

    @Override
    public void addPatientsToList(List<Patient> patients) {
        mAdapter.addPatients(patients);
    }

    @Override
    public void showRecycleViewProgressBar(boolean visibility) {
        if (visibility) {
            mAdapter.addPatients(Collections.singletonList(null));
            mAdapter.notifyItemInserted(mAdapter.getItemCount() - 1);
        } else {
            mAdapter.deleteLastItem();
        }
    }

    private void openPatientDashboardActivity(Long patientId) {
        Intent intent = new Intent(this.getContext(), PatientDashboardActivity.class);
        intent.putExtra(ApplicationConstants.BundleKeys.PATIENT_ID_BUNDLE, patientId);
        this.getContext().startActivity(intent);
    }
}