ArrayProgressAdapter.java

package edu.mit.mobile.android.widget;
/*
 * Copyright (C) 2010  MIT Mobile Experience Lab
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
import java.util.ArrayList;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ProgressBar;

public class ArrayProgressAdapter<T> extends BaseAdapter implements RelativeSizeListAdapter{
	private final Context mContext;


	private final ArrayList<ProgressItem> items = new ArrayList<ProgressItem>();
	public ArrayProgressAdapter(Context context) {
		mContext = context;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {

		final ProgressBar progress;

		if (convertView == null){
	         progress = new ProgressBar(mContext, null, android.R.attr.progressBarStyleHorizontal);
	         progress.setIndeterminate(false);
		}else{
			progress = (ProgressBar) convertView;
		}

		final ProgressItem item = getItem(position);
		progress.setMax((int) item.max);
		progress.setProgress((int) item.value);
		return progress;
	}

	@Override
	public float getRelativeSize(int position) {
		final ProgressItem item = getItem(position);
		return item.max;
	}

	public void clear(){
		items.clear();
	}

	public void add(T data, float value, float max){
		items.add(new ProgressItem(data, value, max));
		notifyDataSetChanged();
	}

	public void update(int position, T data, float value, float max){
		final ProgressItem item = getItem(position);
		item.data = data;
		item.value = value;
		item.max = max;
		notifyDataSetChanged();
	}


	@Override
	public int getCount() {
		return items.size();
	}


	@Override
	public ProgressItem getItem(int position) {
		return items.get(position);
	}


	@Override
	public long getItemId(int position) {
		return position;
	}

	public class ProgressItem{
		public T data;
		public float value;
		public float max;

		public ProgressItem(T data, float value, float max){
			this.data = data;
			this.value = value;
			this.max = max;
		}
	}
}