/**
* Copyright 2010 Mark Wyszomierski
*/
package com.joelapenna.foursquared.widget;
import com.joelapenna.foursquare.types.Group;
import com.joelapenna.foursquare.types.Tip;
import com.joelapenna.foursquare.types.Todo;
import com.joelapenna.foursquare.types.Venue;
import com.joelapenna.foursquared.R;
import com.joelapenna.foursquared.util.RemoteResourceManager;
import com.joelapenna.foursquared.util.StringFormatters;
import com.joelapenna.foursquared.util.TipUtils;
import com.joelapenna.foursquared.util.UiUtil;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Handler;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Observable;
import java.util.Observer;
/**
* @date September 12, 2010
* @author Mark Wyszomierski (markww@gmail.com)
*/
public class TodosListAdapter extends BaseGroupAdapter<Todo>
implements ObservableAdapter {
private LayoutInflater mInflater;
private int mLayoutToInflate;
private Resources mResources;
private RemoteResourceManager mRrm;
private RemoteResourceManagerObserver mResourcesObserver;
private Handler mHandler = new Handler();
private int mLoadedPhotoIndex;
private Map<String, String> mCachedTimestamps;
private boolean mDisplayVenueTitles;
private int mSdk;
public TodosListAdapter(Context context, RemoteResourceManager rrm) {
super(context);
mInflater = LayoutInflater.from(context);
mLayoutToInflate = R.layout.todo_list_item;
mResources = context.getResources();
mRrm = rrm;
mResourcesObserver = new RemoteResourceManagerObserver();
mLoadedPhotoIndex = 0;
mCachedTimestamps = new HashMap<String, String>();
mDisplayVenueTitles = true;
mSdk = UiUtil.sdkVersion();
mRrm.addObserver(mResourcesObserver);
}
public void removeObserver() {
mHandler.removeCallbacks(mUpdatePhotos);
mHandler.removeCallbacks(mRunnableLoadPhotos);
mRrm.deleteObserver(mResourcesObserver);
}
public TodosListAdapter(Context context, int layoutResource) {
super(context);
mInflater = LayoutInflater.from(context);
mLayoutToInflate = layoutResource;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// A ViewHolder keeps references to children views to avoid unnecessary
// calls to findViewById() on each row.
ViewHolder holder;
// When convertView is not null, we can reuse it directly, there is no
// need to re-inflate it. We only inflate a new View when the
// convertView supplied by ListView is null.
if (convertView == null) {
convertView = mInflater.inflate(mLayoutToInflate, null);
// Creates a ViewHolder and store references to the two children
// views we want to bind data to.
holder = new ViewHolder();
holder.photo = (ImageView) convertView.findViewById(R.id.ivVenueCategory);
holder.title = (TextView) convertView.findViewById(R.id.tvTitle);
holder.body = (TextView) convertView.findViewById(R.id.tvBody);
holder.dateAndAuthor = (TextView) convertView.findViewById(R.id.tvDateAndAuthor);
holder.corner = (ImageView) convertView.findViewById(R.id.ivTipCorner);
convertView.setTag(holder);
} else {
// Get the ViewHolder back to get fast access to the TextView
// and the ImageView.
holder = (ViewHolder) convertView.getTag();
}
Todo todo = (Todo)getItem(position);
Tip tip = todo.getTip();
if (tip != null) {
if (mDisplayVenueTitles && tip.getVenue() != null) {
holder.title.setText("@ " + tip.getVenue().getName());
holder.title.setVisibility(View.VISIBLE);
} else {
holder.title.setVisibility(View.GONE);
holder.body.setPadding(
holder.body.getPaddingLeft(), holder.title.getPaddingTop(),
holder.body.getPaddingRight(), holder.body.getPaddingBottom());
}
if (tip.getVenue() != null && tip.getVenue().getCategory() != null) {
Uri photoUri = Uri.parse(tip.getVenue().getCategory().getIconUrl());
try {
Bitmap bitmap = BitmapFactory.decodeStream(mRrm.getInputStream(photoUri));
holder.photo.setImageBitmap(bitmap);
} catch (IOException e) {
holder.photo.setImageResource(R.drawable.category_none);
}
} else {
holder.photo.setImageResource(R.drawable.category_none);
}
if (!TextUtils.isEmpty(tip.getText())) {
holder.body.setText(tip.getText());
holder.body.setVisibility(View.VISIBLE);
} else {
if (mSdk > 3) {
holder.body.setVisibility(View.GONE);
} else {
holder.body.setText("");
holder.body.setVisibility(View.INVISIBLE);
}
}
if (tip.getUser() != null) {
holder.dateAndAuthor.setText(
holder.dateAndAuthor.getText() +
mResources.getString(
R.string.tip_age_via,
StringFormatters.getUserFullName(tip.getUser())));
}
if (TipUtils.isDone(tip)) {
holder.corner.setVisibility(View.VISIBLE);
holder.corner.setImageResource(R.drawable.tip_list_item_corner_done);
} else if (TipUtils.isTodo(tip)) {
holder.corner.setVisibility(View.VISIBLE);
holder.corner.setImageResource(R.drawable.tip_list_item_corner_todo);
} else {
holder.corner.setVisibility(View.GONE);
}
} else {
holder.title.setText("");
holder.body.setText("");
holder.corner.setVisibility(View.VISIBLE);
holder.corner.setImageResource(R.drawable.tip_list_item_corner_todo);
holder.photo.setImageResource(R.drawable.category_none);
}
holder.dateAndAuthor.setText(mResources.getString(
R.string.todo_added_date,
mCachedTimestamps.get(todo.getId())));
return convertView;
}
public void removeItem(int position) throws IndexOutOfBoundsException {
group.remove(position);
notifyDataSetInvalidated();
}
@Override
public void setGroup(Group<Todo> g) {
super.setGroup(g);
mLoadedPhotoIndex = 0;
mHandler.postDelayed(mRunnableLoadPhotos, 10L);
mCachedTimestamps.clear();
for (Todo it : g) {
String formatted = StringFormatters.getTipAge(mResources, it.getCreated());
mCachedTimestamps.put(it.getId(), formatted);
}
}
public void setDisplayTodoVenueTitles(boolean displayTodoVenueTitles) {
mDisplayVenueTitles = displayTodoVenueTitles;
}
private class RemoteResourceManagerObserver implements Observer {
@Override
public void update(Observable observable, Object data) {
mHandler.post(mUpdatePhotos);
}
}
private Runnable mUpdatePhotos = new Runnable() {
@Override
public void run() {
notifyDataSetChanged();
}
};
private Runnable mRunnableLoadPhotos = new Runnable() {
@Override
public void run() {
if (mLoadedPhotoIndex < getCount()) {
Todo todo = (Todo)getItem(mLoadedPhotoIndex++);
if (todo.getTip() != null && todo.getTip().getVenue() != null) {
Venue venue = todo.getTip().getVenue();
if (venue.getCategory() != null) {
Uri photoUri = Uri.parse(venue.getCategory().getIconUrl());
if (!mRrm.exists(photoUri)) {
mRrm.request(photoUri);
}
mHandler.postDelayed(mRunnableLoadPhotos, 200L);
}
}
}
}
};
static class ViewHolder {
ImageView photo;
TextView title;
TextView body;
TextView dateAndAuthor;
ImageView corner;
}
}