ConversationDialog.java

package uk.ac.cam.echo.fragments;

import android.app.DialogFragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

import java.util.Collection;

import uk.ac.cam.echo.ConversationStringUtil;
import uk.ac.cam.echo.R;
import uk.ac.cam.echo.activities.ConversationDetailActivity;
import uk.ac.cam.echo.activities.ConversationListActivity;
import uk.ac.cam.echo.client.ClientApi;
import uk.ac.cam.echo.data.Conversation;
import uk.ac.cam.echo.data.Message;
import uk.ac.cam.echo.data.Tag;
import uk.ac.cam.echo.data.User;
import uk.ac.cam.echo.services.EchoService;

public class ConversationDialog extends DialogFragment implements
									OnClickListener{

	private TextView title;
	private TextView users;
	private TextView tags;
	private TextView online;
    private TextView preview;
	private Button join;
	private ProgressBar progress;

    private static ClientApi api;
    private static User user;
    private static EchoService echoService;
    private ConversationFragment cf;
	private long id;
	
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		
		View view = inflater.inflate(R.layout.conv_dialog_two, container, false);
		
		//id = getArguments().getLong("_id");
		
		title = (TextView)view.findViewById(R.id.convTitleDialog);
		users = (TextView)view.findViewById(R.id.convUsersDialog);
		tags = (TextView)view.findViewById(R.id.convTagsDialog);
		online = (TextView)view.findViewById(R.id.convOnlineDialog);
        preview = (TextView)view.findViewById(R.id.previewDialog);
		progress = (ProgressBar)view.findViewById(R.id.convProgressDialog);
		join = (Button)view.findViewById(R.id.convJoinDialog);

		join.setOnClickListener(this);

        cf = ConversationFragment.newInstance(id, true, echoService);
        cf.setApi(api);
        FragmentManager manager = getChildFragmentManager();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.replace(R.id.previewFrame, cf);
        transaction.commit();

        try {
            getDialog().getWindow().setBackgroundDrawableResource(R.color.background);
        } catch(NullPointerException e) { Log.e("Dialog", "No associated window"); }

		return view;
	}

	
	@Override
	public void onViewCreated(View view, Bundle savedInstanceState) {
		super.onViewCreated(view, savedInstanceState);
		new GetConversation().execute(id);
        cf.getAndListen();
	}

	// Factory to create dialog based on id
	public static ConversationDialog newInstance(long id, EchoService service) {
		ConversationDialog cd = new ConversationDialog();
		Bundle args = new Bundle();
        cd.setId(id);
		args.putLong("_id", id);
		cd.setArguments(args);
        cd.setService(service);
        user = service.getUser();
		return cd;
	}

	public long getShownIndex() {
		return getArguments().getLong("_id");
	}

	@Override
	public void onClick(View v) {
		if(v.getId() == R.id.convJoinDialog) {
            ConversationListActivity cla = (ConversationListActivity)getActivity();
            if(id != cla.getService().getConversationId()) {
                    cla.getService().listenToConversation(id);
            }

			Intent intent = new Intent(getActivity(), ConversationDetailActivity.class);
			intent.putExtra("_id", id);
			startActivity(intent);

		}
	}

    public void setApi(ClientApi clientApi) { api = clientApi; }
    public void setId(long id) { this.id = id;}
    public void setService(EchoService service) { echoService = service; }

    private class GetConversation extends AsyncTask<Long, Void, Conversation> {

        String convName;
        String usersText;
        String tagText;
        String onlineText;

        @Override
        protected Conversation doInBackground(Long... params) {

            Conversation conversation = api.conversationResource.get(params[0]);
            Collection<User> users = conversation.getUsers();
            Collection<Tag> tags = conversation.getTags();

            convName = conversation.getName();
            onlineText = ConversationStringUtil.getOnlineText(users);
            usersText = ConversationStringUtil.getUserText(users);
            tagText = ConversationStringUtil.getTagText(tags);

            return conversation;
        }

        @Override
        protected void onPostExecute(Conversation conversation) {
            super.onPostExecute(conversation);
            if(conversation == null) {
                Log.d("ConvDialog", "No conversation retrieved!");
                return;
            }

            progress.setVisibility(View.GONE);

            if(getDialog() != null) {
                getDialog().setTitle(convName);
                title.setVisibility(View.GONE);
            }else {
                title.setText(convName);
            }

            users.setText(usersText);
            tags.setText(tagText);
            online.setText(onlineText);
        }
    }
}