Android Open Source - AbstractGroupedAdapter Abstract Grouped Adapter

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License

The source code is released under:

Copyright (c) 2013 Aryan Ghassemi. All rights reserved. https://github.com/aryaxt/AbstractGroupedAdapter Permission is hereby granted, free of charge, to any person obtaining a copy of this software...

Java Source Code

/*  
 *  AbstractGroupedAdapter.java/*from  w w  w  .  j  ava 2 s.  c om*/
 *
 *   Created by Aryan Ghassemi on Oct 5, 2013.
 *  Copyright Aryan Ghassemi. All rights reserved.
 *
 *  https://github.com/aryaxt/AbstractGroupedAdapter
 *  
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *  
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *  
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 */

package com.aryaxt.groupedadapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ArrayAdapter;

public abstract class AbstractGroupedAdapter<H, I> extends ArrayAdapter<Object>
{
  protected Map<H, List<I>> itemsMap;
  protected List<Object> items;
  protected LayoutInflater layoutInflater;
  protected Context context;
  private int count = 0;
  
  public AbstractGroupedAdapter(Context context) {
    super(context, 0);
    
    this.layoutInflater = LayoutInflater.from(context);
    this.context = context;
    this.items = new ArrayList<Object>();
  }
  
  protected View getReusableView(View view, int viewId) {
    if (view != null && view.getId() == viewId)
      return view;
    
    return layoutInflater.inflate(viewId, null);
  }
  
  @SuppressWarnings("unchecked")
    @Override
  public I getItem(int position) {
    return (I) items.get(position);
  }
  
  @SuppressWarnings("unchecked")
    public H getHeader(int position) {
    return (H) items.get(position);
  }
  
  protected boolean isItemHeader(int position) {
    Object object = items.get(position);
    return (itemsMap.keySet().toArray()[0].getClass() == object.getClass()) ? true : false;
  }
  
  @Override
  public int getCount() {
    return count;
  }
  
  @Override
  public boolean areAllItemsEnabled () {
    return false;
  }
  
  @Override
  public boolean isEnabled(int position) {
    return (isItemHeader(position)) ? false : true;
  }
  
  private void populateItemsAndCount() {
    count = 0;
    
    for (H h : itemsMap.keySet()) {
      items.add(h);
      count++;
      
      for (I i : itemsMap.get(h)) {
        items.add(i);
        count++;
      }
    }
  }

    @SuppressLint("NewApi")
    public void setData(Map<H, List<I>> map) {
    this.itemsMap = new HashMap<H, List<I>>(map);
    populateItemsAndCount();
    
    super.clear();
    super.addAll(items);
  }
}

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