Android Open Source - SelfossAndroidClient Feed Entry Adapter

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Back to project page SelfossAndroidClient.

License

The source code is released under:

GNU General Public License

Java Source Code

package org.vester.selfoss;
/*  ww  w . j  a  va2  s.  c  o m*/
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ExecutorService;

import org.vester.selfoss.FeedEntryRowFragment.FeedEntryHolder;
import org.vester.selfoss.icons.IconLoader;
import org.vester.selfoss.model.FeedEntry;
import org.vester.selfoss.operation.Operation;
import org.vester.selfoss.operation.SelfossOperationFactory;

import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Handler;
import android.support.v4.app.FragmentActivity;
import android.text.Html;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

final class FeedEntryAdapter extends ArrayAdapter<FeedEntry> {

  /**
   * 
   */
  // private ItemListFragment itemListFragment;
  private final String url;
  private Set<String> loadingIconSet = Collections.synchronizedSet(new HashSet<String>());
  private boolean mIsLoading = false;
  private final Handler guiThread;
  private final ExecutorService iconLoadThreads;

  FeedEntryAdapter(FragmentActivity context, int resource, int textViewResourceId, List<FeedEntry> objects, String url, Handler guiThread, ExecutorService iconLoadThreads) {
    super(context, resource, textViewResourceId, objects);
    this.url = url;
    this.guiThread = guiThread;
    this.iconLoadThreads = iconLoadThreads;
  }

  public void setIsLoading(final boolean isLoading) {
    guiThread.post(new Runnable() {

      @Override
      public void run() {
        if (mIsLoading != isLoading) {
          mIsLoading = isLoading;
          notifyDataSetChanged();
        }

      }
    });
  }

  @Override
  public int getCount() {
    return super.getCount() + (mIsLoading ? 1 : 0);
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    View row = convertView;
    if (mIsLoading && position == (getCount() - 1)) {
      // return your progress view goes here. Ensure that it has
      // the ID R.id.progress;
      if (row == null || row.getTag() instanceof FeedEntryHolder) {
        LayoutInflater inflater = ((FragmentActivity) getContext()).getLayoutInflater();
        row = inflater.inflate(R.layout.list_view_progress_bar_row, parent, false);
        row.setTag(new LoadingFeedEntryHolder());
      }
    } else {
      // http://www.ezzylearning.com/tutorial.aspx?tid=1763429
      row = convertView;
      FeedEntryHolder holder = null;

      if (row == null || row.getTag() instanceof LoadingFeedEntryHolder) {
        LayoutInflater inflater = ((FragmentActivity) getContext()).getLayoutInflater();
        row = inflater.inflate(R.layout.feed_entry_row, parent, false);

        holder = new FeedEntryRowFragment.FeedEntryHolder();
        holder.imgIcon = (ImageView) row.findViewById(R.id.imgIcon);
        holder.txtTitle = (TextView) row.findViewById(R.id.txtTitle);
        holder.txtSource = (TextView) row.findViewById(R.id.txtSource);
        row.setTag(holder);
      } else if (row.getTag() instanceof FeedEntryHolder) {
        holder = (FeedEntryHolder) row.getTag();
      }

      final FeedEntry entry = FeedEntryRowFragment.items.get(position);
      if (!entry.unread) {
        holder.txtTitle.setTypeface(null);
        row.setBackgroundColor(Color.LTGRAY);
      } else {
        holder.txtTitle.setTypeface(Typeface.DEFAULT_BOLD);
        row.setBackgroundColor(Color.WHITE);
      }
      if (entry.icon.length() > 0) {
        if (entry.sourcetitle.trim().equals("Planet Android")) {
          Log.d(FeedEntryRowFragment.class.getName(), "Now loading for Planet Android: " + entry.icon);
        }
        Bitmap bitmap = IconLoader.getBitmap(url, entry.icon, getContext());
        if (bitmap != null) {
          holder.imgIcon.setImageBitmap(bitmap);
        } else {
          Log.d(FeedEntryRowFragment.class.getName(), entry.icon + " is not in the cache. (" + entry.sourcetitle + ")");
          holder.imgIcon.setImageBitmap(null);
          if (!loadingIconSet.contains(entry.icon)) {
            loadingIconSet.add(entry.icon);
            Operation operation = SelfossOperationFactory.getInstance().createLoadImageOperation(holder.imgIcon, entry, getContext(), guiThread);
            iconLoadThreads.submit(new SelfossTask(operation, getContext(), new ErrorCallback() {

              @Override
              public void errorOccured(String url, Operation operation, Exception e) {
                Log.e(FeedEntryAdapter.class.getName(), "Error occurred trying to load icon for: " + entry + " on url: " + url, e);
              }

            }));
          } else {
            // Add listener that can react when operation has stored
            // icon.
          }
        }
      } else {
        holder.imgIcon.setImageBitmap(null);
      }
      holder.txtTitle.setText(Html.fromHtml(entry.title));
      holder.txtSource.setText(entry.sourcetitle);
    }
    return row;
  }

  private final class LoadingFeedEntryHolder {
  }

}

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