Android Open Source - rhetolog Fallacy Adapter

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License

The source code is released under:

Copyright (c) 2012 Kirk Zurell 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 Soft...

Java Source Code

package name.zurell.kirk.apps.android.rhetolog;
/*  w  w w .  j  a  v  a  2  s .com*/
/*
 * Copyright (c) 2012 Kirk Zurell
 *
 * See the file LICENSE for copying permission.
 */

import java.util.List;

import android.content.Context;
import android.view.DragEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListAdapter;

/**
 * @author kirk
 *
 */


public class FallacyAdapter extends BaseAdapter implements ListAdapter, View.OnDragListener {

  @SuppressWarnings("unused")
  private String TAG = FallacyAdapter.class.getSimpleName();
  
  
  /**
   * List of {@link Fallacy} objects to be displayed.
   */
  private List<Fallacy> fallacies = RhetologApplication.getFallacies();
  
  
  private LayoutInflater inflater;
  private int layout;
  private Context context;
  public int HighlightedItem = 0;
  
  
  /**
   * Constructor, receives the layout that the adapter uses to create views for its list.
   */
  public FallacyAdapter(Context context, int layout) {
    super();
    this.context = context;
    this.layout = layout;
    
    this.inflater = LayoutInflater.from(this.context);
  }
  
  

  /* (non-Javadoc)
   * @see android.widget.Adapter#getCount()
   */
  @Override
  public int getCount() {
    if(fallacies == null) {
      return 0;
    }
    return fallacies.size();
  }

  /* (non-Javadoc)
   * @see android.widget.Adapter#getItem(int)
   */
  @Override
  public Object getItem(int arg0) {
    if (null == fallacies) {
      return null;
    }
    return fallacies.get(arg0); // Can't do anything if getCount() not respected
  }

  /* (non-Javadoc)
   * @see android.widget.Adapter#getItemId(int)
   */
  @Override
  public long getItemId(int arg0) {
    return arg0;
  }

  /* (non-Javadoc)
   * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup)
   */
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    
    // Will only ever be FallacyViews
    FallacyView work = (FallacyView) convertView;

    if(work == null) {
      work = (FallacyView) inflater.inflate(this.layout, parent, false);
    }

    
    Fallacy selected = fallacies.get(position);
    
    // The FallacyView knows what Fallacy it displays, used for Drag
    work.setFallacy(selected);
    
    return work;
  }



  // Receive drags for the fallacy ListView. Accept them all.
  
  @Override
  public boolean onDrag(View v, DragEvent event) {

    boolean result = false;

    Fallacy fallacy = (Fallacy) event.getLocalState();

    switch (event.getAction()) {

    case DragEvent.ACTION_DRAG_STARTED:
      // Want the drop when it happens
      result = true;
      break;
    
    case DragEvent.ACTION_DROP:
      if(mDropListener != null) {
        if (fallacy != null) {
          mDropListener.OnFallacyListDrop(fallacy);
        }
      }
      result = true;
      break;

    default:
      break;
    
    }

    return result;
  }

  /**
   * Main activity implements this interface to receive instructions to remove an entry from the MRU list
   * @author kirk
   *
   */
  public interface FallacyListDropListener {
    public void OnFallacyListDrop(Fallacy fallacy);
  }
  
  
  // The adapter's drop listener
  private FallacyListDropListener mDropListener;

  /**
   * @return the mDropListener
   */
  public FallacyListDropListener getDropListener() {
    return mDropListener;
  }

  /**
   * @param mDropListener the mDropListener to set
   */
  public void setDropListener(FallacyListDropListener mDropListener) {
    this.mDropListener = mDropListener;
  }
  
  
  
}

Java Source Code List

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