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package uk.co.blatech.blaupload;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
import com.squareup.otto.Subscribe;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import uk.co.blatech.blaupload.data.ImageItem;
import uk.co.blatech.blaupload.ui.GridViewAdapter;
import uk.co.blatech.blaupload.util.EventBus;
import uk.co.blatech.blaupload.util.ImageLoader;
import uk.co.blatech.blaupload.util.ImageLoaderResultEvent;
import uk.co.blatech.blaupload.util.JSONLoader;
import uk.co.blatech.blaupload.util.JSONLoaderResultEvent;
/**
* A simple {@link Fragment} subclass.
* This is the main part of the home screen.
* Currently it displays the 9 most recent files from blaupload in a grid
*
*/
public class HomeScreenFragment extends Fragment {
private OnFragmentInteractionListener mListener;
private ArrayList<ImageItem> thumbnails;
private GridViewAdapter gridAdapter;
private GridView gridView;
private ArrayList<String> filenames;
private JSONArray json;
/**
* Returns a new instance of this fragment
*/
public static HomeScreenFragment newInstance() {
HomeScreenFragment fragment = new HomeScreenFragment();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
public HomeScreenFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home_screen, container, false);
EventBus.getInstance().register(this);
gridView = (GridView) rootView.findViewById(R.id.gridView);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
thumbnails = new ArrayList<ImageItem>();
gridAdapter =
new GridViewAdapter(getActivity(), R.layout.grid_item, thumbnails);
gridView.setAdapter(gridAdapter);
filenames = new ArrayList<String>();
//Open the full image in a pager when clicked
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(getActivity(), "Clicked image #"+position, Toast.LENGTH_SHORT).show();
Intent mIntent = new Intent(getActivity(), ImagePager.class);
mIntent.putExtra("json", json.toString());
mIntent.putExtra("position", position);
startActivity(mIntent);
}
});
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
//Start loading the JSON file list in a thread as soon as we start
new JSONLoader().execute("http://www.blaupload.co.uk/?format=json&last=6");
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
public void onFragmentInteraction(Uri uri);
}
/**
* This function is called when the JSONLoader thread finishes
* It processes the JSON and then starts loading the image thumbnails
* @param event Event containing the JSONArray of files
*/
@Subscribe
public void onAsyncTaskResult(JSONLoaderResultEvent event) {
json = event.getResult();
if (json != null) {
try {
// Get the filename out of each JSON item
for (int i = 0; i < json.length(); i++) {
JSONObject item = json.getJSONObject(i);
filenames.add(item.getString("filename"));
}
} catch (JSONException e) {
//TODO: Error handling
e.printStackTrace();
}
//Load the thumbnail for each item on a thread
int id = 0;
for (String filename : filenames) {
new ImageLoader(getResources()).execute("http://www.lc8n.com/blathumbs/", filename+".png", String.valueOf(id));
id++;
}
}
}
/**
* This function is called when an ImageLoader thread finishes
* It puts the image into the grid
* @param event Event containing an ImageItem with a bitmap and image details
*/
@Subscribe
public void onAsyncTaskResult(ImageLoaderResultEvent event) {
ImageItem image = event.getResult();
thumbnails.add(image.getId(), image);
gridAdapter.notifyDataSetChanged();
}
}
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