LabeledImageApapter.java

/**
 * Copyright (C) 2013- Iordan Iordanov
 *
 * This 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 3 of the License, or
 * (at your option) any later version.
 *
 * This software 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 software; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 * USA.
 */


package com.undatech.opaque;

import java.io.File;

import android.app.Activity;
import android.content.Context;
import android.database.DataSetObserver;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.GridView;
import android.widget.ListAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.undatech.opaque.R;

public class LabeledImageApapter implements ListAdapter {
	private static final String TAG = "LabeledImageApapter";
	
	private Context context;
	private final String[] imageFiles;
	private final String[] imageLabels;
	private int numCols = 0;
	private Bitmap defaultBitmap = null;
	private String defaultLabel = null;
 
	public LabeledImageApapter(Context context, String[] imageFiles, String[] imageLabels, int numCols) {
		this.context = context;
		this.imageFiles = imageFiles;
		this.imageLabels = imageLabels;
		this.numCols = numCols;
		this.defaultBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.no_screenshot);
		this.defaultLabel = "(No VM specified)";
	}
 
	public View getView(int position, View convertView, ViewGroup parent) {
		LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		android.util.Log.e(TAG, "Now setting label at position: " + position + " to: " + imageLabels[position]);

		GridView gView = (GridView) ((Activity)context).findViewById(R.id.gridView);
		int height = gView.getWidth()/numCols;
		
		View gridView;
		if (convertView != null) {
			gridView = convertView;
			ImageView iView = (ImageView) convertView.findViewById(R.id.grid_item_image);
			Bitmap tmp = ((BitmapDrawable)iView.getDrawable()).getBitmap();
			if (!tmp.equals(defaultBitmap)) {
				tmp.recycle();
			}
		} else {
			gridView = new View(context); 
			gridView = inflater.inflate(R.layout.grid_item, null);	
		}
		
		GridView.LayoutParams lp = new GridView.LayoutParams(height, height);
		gridView.setLayoutParams(lp);

		TextView textView = (TextView) gridView.findViewById(R.id.grid_item_text);
		if (imageLabels[position].equals("")) {
			textView.setText(defaultLabel);		
		} else {
			textView.setText(imageLabels[position]);
		}
		ImageView imageView = (ImageView) gridView.findViewById(R.id.grid_item_image);
		if (new File(imageFiles[position]).exists()) {
			Bitmap gridImage = BitmapFactory.decodeFile(imageFiles[position]);
			imageView.setImageBitmap(gridImage);
		} else {
			imageView.setImageBitmap(defaultBitmap);
		}
		
		return gridView;
	}
 
	@Override
	public int getCount() {
		int count = 0;
		if (imageFiles != null) {
			count = imageFiles.length;
		}
		return count;
	}
 
	@Override
	public Object getItem(int position) {
		return null;
	}
 
	@Override
	public long getItemId(int position) {
		return position;
	}
	
	@Override
	public boolean areAllItemsEnabled () {
		return true;
	}
	
	@Override
	public boolean hasStableIds () {
		return true;
	}

	@Override
	public int getItemViewType(int position) {
		return 0;
	}

	@Override
	public int getViewTypeCount() {
		return 1;
	}

	@Override
	public boolean isEmpty() {
		return false;
	}

	@Override
	public void registerDataSetObserver(DataSetObserver observer) {
	}

	@Override
	public void unregisterDataSetObserver(DataSetObserver observer) {		
	}

	@Override
	public boolean isEnabled(int position) {
		return true;
	}
}