MapViewFragment.java

/*
 * ******************************************************************************
 *  * Copyright (c) 2015.  Shahul Hameed.
 *  *
 *  * Licensed under GNU GENERAL PUBLIC LICENSE;
 *  * you may not use this file except in compliance with the License.
 *  *
 *  * 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.shahul3d.indiasatelliteweather.views;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.davemorrissey.labs.subscaleview.ImageViewState;
import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
import com.noveogroup.android.log.Log;
import com.shahul3d.indiasatelliteweather.R;
import com.shahul3d.indiasatelliteweather.controllers.MainMapActivity_;
import com.shahul3d.indiasatelliteweather.data.AppConstants;
import com.shahul3d.indiasatelliteweather.events.DownloadStatusEvent;
import com.shahul3d.indiasatelliteweather.utils.FormatUtils;
import com.shahul3d.indiasatelliteweather.utils.PreferenceUtil;
import com.shahul3d.indiasatelliteweather.utils.StorageUtils;

import org.androidannotations.annotations.AfterViews;
import org.androidannotations.annotations.EFragment;
import org.androidannotations.annotations.FragmentArg;
import org.androidannotations.annotations.UiThread;
import org.androidannotations.annotations.ViewById;

import java.io.File;

import de.greenrobot.event.EventBus;

@EFragment(R.layout.map_view_fragment)
public class MapViewFragment extends Fragment {
    @FragmentArg
    int pageNumber;
    @FragmentArg
    AppConstants.MapType mapType;

    @ViewById
    SubsamplingScaleImageView touchImage;
    @ViewById
    TextView noImageBanner;
    @ViewById
    TextView map_updated_time;

    ImageViewState mapViewState = null;
    EventBus bus = EventBus.getDefault();
    MainMapActivity_ activityContext = null;
    private static final String BUNDLE_STATE = "mapViewState";

    @Override
    public void onPause() {
        bus.unregister(this);
        Log.d("OnPause:" + pageNumber);
        super.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        ImageViewState state = touchImage.getState();
        if (state != null) {
            outState.putSerializable(BUNDLE_STATE, touchImage.getState());
        }
        super.onSaveInstanceState(outState);
    }

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

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        if (savedInstanceState != null && savedInstanceState.containsKey(BUNDLE_STATE)) {
            mapViewState = (ImageViewState) savedInstanceState.getSerializable(BUNDLE_STATE);
        }
        return super.onCreateView(inflater, container, savedInstanceState);
    }

    @AfterViews
    void calledAfterViewInjection() {
        activityContext = (MainMapActivity_) getActivity();
        renderImage();
    }

    @Override
    public void onResume() {
        super.onResume();
        bus.register(this);
        Log.d("OnResume:" + pageNumber);
    }

    @UiThread
    void renderImage() {
        final String mapFileName = AppConstants.getMapType(pageNumber, mapType.value);
        String imageFile = StorageUtils.getAppSpecificFolder() + File.separator + mapFileName + ".jpg";

        if (!StorageUtils.fileExists(imageFile)) {
            Log.e("File not exists: " + pageNumber);
            noImageBanner.setVisibility(View.VISIBLE);
            map_updated_time.setVisibility(View.GONE);
            return;
        }

        map_updated_time.setVisibility(View.VISIBLE);
        if (mapViewState != null) {
            touchImage.setImageFile(imageFile, mapViewState);
        } else {
            touchImage.setScaleAndCenter(2f, touchImage.getCenter());
            touchImage.setImageFile(imageFile);
        }
        touchImage.setMaxScale(7f);
        touchImage.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_CROP);

        Log.d("Map refreshed");
        updateLastModifiedTime(mapFileName);
    }

    private void updateLastModifiedTime(String mapType) {
        long lastUpdatedDateTime = PreferenceUtil.getLastModifiedTime(mapType);
        String timeAgo = "sometime ago";
        if (lastUpdatedDateTime > 0) {
            timeAgo = FormatUtils.getTimeAgo(lastUpdatedDateTime);
        }
        map_updated_time.setText(timeAgo);
    }

    public void onEvent(DownloadStatusEvent downloadStatus) {
        int mapID = downloadStatus.mapID;
        if (pageNumber != mapID) {
            return;
        }

        activityContext.startRefreshAnimation();

        if (!downloadStatus.status) {
            //TODO: Handle download failure scenerio.
            Log.d("Received download failed event for:" + mapID);
            return;
        }

        renderImage();
    }
}