AboutUserFragment.java

package com.airlocksoftware.hackernews.fragment;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.airlocksoftware.hackernews.R;
import com.airlocksoftware.hackernews.loader.AboutUserLoader;
import com.airlocksoftware.hackernews.model.User;
import com.airlocksoftware.holo.actionbar.interfaces.ActionBarClient;
import com.airlocksoftware.holo.actionbar.interfaces.ActionBarController;
import com.airlocksoftware.holo.type.FontText;
import com.airlocksoftware.holo.utils.ViewUtils;

/** Fragment that displays the user's name, karma, and about summary. **/
public class AboutUserFragment extends Fragment implements ActionBarClient, LoaderManager.LoaderCallbacks<User> {

	// State
	String mUsername;

	FontText mUsernameText, mCreatedText, mTotalText, mAvgText, mDescriptionText;
	View mError, mLoading, mAboutUserContainer;

	// Constants
	public static final String USERNAME = AboutUserFragment.class.getSimpleName() + ".username";

	public AboutUserFragment() {
		// default no-arg constructor
	}

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

		Bundle args = getArguments();
		if (args != null) mUsername = args.getString(USERNAME);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
		View root = inflater.inflate(R.layout.frg_aboutuser, container, false);
		ViewUtils.fixBackgroundRepeat(root);
		findViews(root);
		showLoading();
		return root;
	}

	private void findViews(View root) {
		mAboutUserContainer = root.findViewById(R.id.cnt_about_user);
		mUsernameText = (FontText) root.findViewById(R.id.txt_username);
		mCreatedText = (FontText) root.findViewById(R.id.txt_created);
		mTotalText = (FontText) root.findViewById(R.id.txt_karma_total);
		mAvgText = (FontText) root.findViewById(R.id.txt_karma_avg);
		mDescriptionText = (FontText) root.findViewById(R.id.txt_description);

		mError = root.findViewById(R.id.cnt_error);
		mLoading = root.findViewById(R.id.cnt_loading);
	}

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

		// restoring saved state
		if (savedInstanceState != null) {
			mUsername = savedInstanceState.getString(USERNAME);
		}

		getLoaderManager().initLoader(0, null, this);
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
		outState.putString(USERNAME, mUsername);
		super.onSaveInstanceState(outState);
	}

	@Override
	public Loader<User> onCreateLoader(int id, Bundle args) {
		return new AboutUserLoader(getActivity(), mUsername);
	}

	@Override
	public void onLoadFinished(Loader<User> loader, User data) {
		if (data != null) {
			bindData(data);
			showContent();
		} else {
			showError();
		}
	}

	private void bindData(User data) {
		mUsernameText.setText(data.username);
		mCreatedText.setText(data.created);
		mTotalText.setText(Integer.toString(data.karma));
		if (data.avg != -1.0f) mAvgText.setText(Float.toString(data.avg));
		mDescriptionText.setText(Html.fromHtml(data.aboutHtml));
	}

	@Override
	public void onLoaderReset(Loader<User> loader) {
		// do nothing
	}

	@Override
	public void setupActionBar(Context context, ActionBarController ab) {
		ab.setTitleText(context.getString(R.string.about_user));
	}

	@Override
	public void cleanupActionBar(Context context, ActionBarController ab) {
		ab.setTitleText(null);
	}

	private void showLoading() {
		mError.setVisibility(View.GONE);
		mLoading.setVisibility(View.VISIBLE);
		mAboutUserContainer.setVisibility(View.GONE);
	}

	private void showError() {
		mAboutUserContainer.setVisibility(View.GONE);
		mError.setVisibility(View.VISIBLE);
		mLoading.setVisibility(View.GONE);
	}

	private void showContent() {
		mAboutUserContainer.setVisibility(View.VISIBLE);
		mError.setVisibility(View.GONE);
		mLoading.setVisibility(View.GONE);
	}

}