Android Open Source - android-rss Channel List Row

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * $Id: ChannelListRow.java 114 2008-02-14 05:09:23Z jasta00 $
 *//from   ww w .ja  v a 2s  .co  m
 * Copyright (C) 2007 Josh Guilfoyle <jasta@devtcg.org>
 *
 * 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, 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.
 */

package org.devtcg.rssreader.view;

import java.net.URISyntaxException;

import org.devtcg.rssreader.R;
import org.devtcg.rssreader.provider.RSSReader;

import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Typeface;
import android.net.Uri;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewInflate;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class ChannelListRow extends RelativeLayout
{
  private ImageView mIcon;
  private TextView mName;
  private TextView mCount;
  private ProgressBar mRefresh;

//  private static final int CHANNEL_NAME = 1;
//  private static final int CHANNEL_RIGHT = 2;
//  private static final int CHANNEL_ICON = 3;

  public ChannelListRow(Context context)
  {
    super(context);

    setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

    View view = ViewInflate.from(getContext()).inflate(R.layout.channel_list_item, null, false, null);

    mIcon = (ImageView)view.findViewById(R.id.channel_icon);
    mName = (TextView)view.findViewById(R.id.channel_name);
    mCount = (TextView)view.findViewById(R.id.channel_post_count);
    mRefresh = (ProgressBar)view.findViewById(R.id.channel_refresh);
    mRefresh.setVisibility(View.GONE);
    
    RelativeLayout.LayoutParams rules =
      new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
    addView(view, rules);


//    mIcon = new ImageView(context);
//    mIcon.setPadding(0, 2, 3, 2);
//    mIcon.setId(CHANNEL_ICON);
//
//    RelativeLayout.LayoutParams iconRules =
//      new RelativeLayout.LayoutParams(16 + 3, 16 + 4);
//    
//    iconRules.addRule(ALIGN_WITH_PARENT_LEFT);
//    addView(mIcon, iconRules);
//    
//    LinearLayout rightSide = new LinearLayout(context);
//    rightSide.setId(CHANNEL_RIGHT);
//    
//    /* <right> */
//    mRefresh = new ProgressBar(context);
//    mRefresh.setIndeterminate(true);
//    mRefresh.setVisibility(GONE);
//    
//    LinearLayout.LayoutParams refreshRules = new LinearLayout.LayoutParams(18, 18);
//    refreshRules.gravity = Gravity.CENTER_VERTICAL;
//    rightSide.addView(mRefresh, refreshRules);
//
//    mCount = new TextView(context);
//    mCount.setGravity(Gravity.CENTER_VERTICAL);
//    rightSide.addView(mCount, new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
//    /* </right> */
//    
//    RelativeLayout.LayoutParams rightRules =
//      new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
//    
//    rightRules.addRule(ALIGN_WITH_PARENT_RIGHT);
//    
//    addView(rightSide, rightRules);
//    
//    mName = new TextView(context);
//    mName.setPadding(3, 0, 0, 0);
//    mName.setId(CHANNEL_NAME);
//
//    RelativeLayout.LayoutParams nameRules =
//      new RelativeLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT);
//
//    nameRules.addRule(POSITION_TO_LEFT, CHANNEL_RIGHT);
//    nameRules.addRule(POSITION_TO_RIGHT, CHANNEL_ICON);
//    addView(mName, nameRules);        
  }

  public void bindView(Cursor cursor)
  {
    ContentResolver content = getContext().getContentResolver();
    
    long channelId = 
      cursor.getLong(cursor.getColumnIndex(RSSReader.Channels._ID));

    /* Determine number of unread posts. */
    Cursor unread = 
      content.query(ContentUris.withAppendedId(RSSReader.Posts.CONTENT_URI_LIST, channelId), 
        new String[] { RSSReader.Posts._ID }, "read=0", null, null);

    Typeface tf;

    int unreadCount = unread.count();
    unread.close();

    if (unreadCount > 0)
      tf = Typeface.DEFAULT_BOLD;
    else
      tf = Typeface.DEFAULT;

    String icon = 
      cursor.getString(cursor.getColumnIndex(RSSReader.Channels.ICON));
    
    mIcon.setImageURI(Uri.parse(icon));

    mName.setTypeface(Typeface.DEFAULT);
    mName.setText(cursor, cursor.getColumnIndex(RSSReader.Channels.TITLE));

    mCount.setTypeface(tf);
    mCount.setText(new Integer(unreadCount).toString());
  }
  
  public void startRefresh()
  {
    Log.d("RSSChannelListRow", "Start refresh...");
    mCount.setVisibility(GONE);
    mRefresh.setVisibility(VISIBLE);
  }
  
  public void updateRefresh(int progress)
  {
    Log.d("RSSChannelListRow", "Switch to value-based, update to: " + progress);
  }
  
  public void finishRefresh(Cursor cursor)
  {
    Log.d("RSSChannelListRow", "Finished refresh, reset original view...");
    
    mRefresh.setVisibility(GONE);
    bindView(cursor);    
    mCount.setVisibility(VISIBLE);
  }
  
  public void finishRefresh(long channelId)
  {
    Cursor cursor = getContext().getContentResolver().query
     (ContentUris.withAppendedId(RSSReader.Channels.CONTENT_URI, channelId),
      new String[] { RSSReader.Channels._ID, RSSReader.Channels.TITLE, RSSReader.Channels.ICON },
      null, null, null);
    
    /* Hmm, they must have deleted this channel while we were
     * refreshing?  OK, we can deal... */
    if (cursor.count() < 1)
      return;
    
    cursor.first();
    finishRefresh(cursor);
    cursor.close();
  }
}

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