SearchAdapter.java

package com.airlocksoftware.hackernews.adapter;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import android.content.Context;
import android.text.Html;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

import com.airlocksoftware.hackernews.R;
import com.airlocksoftware.hackernews.activity.MainActivity;
import com.airlocksoftware.hackernews.activity.MainActivity.CommentsTab;
import com.airlocksoftware.hackernews.model.SearchItem;
import com.airlocksoftware.holo.type.FontText;
import com.airlocksoftware.holo.utils.ViewUtils;
import org.apache.commons.lang3.StringUtils;

/** Adapter for SearchFragment. Displays **/
public class SearchAdapter extends BaseAdapter {

	Context mContext;
	List<SearchItem> mSearchItems = new ArrayList<SearchItem>();

	private boolean moreLink;

	private static final String TAG = SearchAdapter.class.getSimpleName();
	private static final int ITEM_TYPE_INVALID = -1;
	private static final int ITEM_TYPE_STORY = 0;
	private static final int ITEM_TYPE_COMMENT = 1;
	private static final int ITEM_TYPE_MORE = 2;

	public SearchAdapter(Context context) {
		mContext = context;
	}

	@Override
	public int getCount() {
		return mSearchItems.size() + ((moreLink) ? 1 : 0);
	}

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

	@Override
	public SearchItem getItem(int position) {
		return mSearchItems.get(position);
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup container) {
		LayoutInflater inflater = LayoutInflater.from(mContext);
		SearchItem item = getItem(position);
		int viewType = getItemViewTypeBySearchItem(item);

		switch (viewType) {
		case ITEM_TYPE_STORY:
			
			StoryHolder sHolder;
			if (convertView == null) {
				convertView = inflater.inflate(R.layout.vw_story, container, false);
				ViewUtils.fixBackgroundRepeat(convertView);
				sHolder = getNewStoryHolder(convertView);

				if (convertView != null) {
					convertView.setTag(sHolder);
				}

			} else {
				sHolder = (StoryHolder) convertView.getTag();
			}

			bindStoryView(item, sHolder);

			break;
		case ITEM_TYPE_COMMENT:
			
			CommentHolder cHolder;
			if (convertView == null) {
				convertView = inflater.inflate(R.layout.vw_comment_search, container, false);

				ViewUtils.fixBackgroundRepeat(convertView);
				cHolder = getNewCommentsHolder(convertView);

				if (convertView != null) {
					convertView.setTag(cHolder);
				}

			} else {
				cHolder = (CommentHolder) convertView.getTag();
			}

			bindCommentsView(item, cHolder);

			break;
		case ITEM_TYPE_MORE:
			
			if (convertView == null) {
				convertView = inflater.inflate(R.layout.vw_more_link, container, false);
			}
			
			break;
		case ITEM_TYPE_INVALID:
			convertView = inflater.inflate(R.layout.vw_invalid_story, container, false);
			break;
		}
		
		return convertView;
	}

	private void bindCommentsView(SearchItem item, CommentHolder cHolder) {
		// if thread is [dead], there will be no item.discussion.title
		if (item.story_id != null && item.story_url != null) {
			cHolder.title.setVisibility(View.VISIBLE);
			cHolder.title.setText("on: " + item.story_title);
		} else {
			cHolder.title.setVisibility(View.GONE);
		}

		cHolder.username.setText(item.author);
		cHolder.comment.setText(Html.fromHtml(item.comment_text));
		cHolder.item = item;
	}

	private void bindStoryView(SearchItem item, StoryHolder sHolder) {
		sHolder.title.setText(item.title);
		sHolder.numPoints.setText(Long.toString(item.points));
		sHolder.numComments.setText(Long.toString(item.num_comments));
		sHolder.domain.setText(item.domain());
		sHolder.item = item;
	}

	private CommentHolder getNewCommentsHolder(View convertView) {
		CommentHolder cHolder;
		cHolder = new CommentHolder();
		cHolder.username = (FontText) convertView.findViewById(R.id.txt_username);
		cHolder.comment = (FontText) convertView.findViewById(R.id.txt_comment);
		cHolder.title = (FontText) convertView.findViewById(R.id.txt_title);

		cHolder.title.setTag(cHolder);

		cHolder.title.setOnClickListener(mCommentListener);

		return cHolder;
	}

	private StoryHolder getNewStoryHolder(View convertView) {
		StoryHolder sHolder;
		sHolder = new StoryHolder();
		sHolder.title = (FontText) convertView.findViewById(R.id.txt_title);
		sHolder.numPoints = (FontText) convertView.findViewById(R.id.txt_num_pts);
		sHolder.numComments = (FontText) convertView.findViewById(R.id.txt_num_comments);
		sHolder.domain = (FontText) convertView.findViewById(R.id.txt_domain);
		sHolder.commentsButton = convertView.findViewById(R.id.btn_comments);
		sHolder.webButton = convertView.findViewById(R.id.btn_web);

		sHolder.commentsButton.setTag(sHolder);
		sHolder.webButton.setTag(sHolder);

		sHolder.commentsButton.setOnClickListener(mStoryListener);
		sHolder.webButton.setOnClickListener(mStoryListener);
		return sHolder;
	}

	@Override
	public int getItemViewType(int position) {
		if (position == mSearchItems.size()) return ITEM_TYPE_MORE;
		else return getItemViewTypeBySearchItem(getItem(position));
	}

	private int getItemViewTypeBySearchItem(SearchItem item) {
		if (item.isComment()) {
			return ITEM_TYPE_COMMENT;
		} else if (item.isTextPost() || item.isArticlePost()) {
			return ITEM_TYPE_STORY;
		} else {
			Log.d(TAG, "Received a search result that isn't a comment or a submission.");
			return ITEM_TYPE_INVALID;
		}

	}

	@Override
	public int getViewTypeCount() {
		return 3;
	}

	public void add(SearchItem item) {
		mSearchItems.add(item);
		notifyDataSetChanged();
	}

	public void addAll(Collection<SearchItem> items) {
		mSearchItems.addAll(items);
		notifyDataSetChanged();
	}

	public void clear() {
		mSearchItems.clear();
		notifyDataSetChanged();
	}

	private class StoryHolder {
		public SearchItem item;
		public FontText title, numPoints, numComments, domain;
		public View commentsButton, webButton;
	}

	private class CommentHolder {
		public SearchItem item;
		public FontText username, comment, title;
	}

	public View.OnClickListener mStoryListener = new View.OnClickListener() {
		@Override
		public void onClick(View v) {
			StoryHolder holder = (StoryHolder) v.getTag();
			CommentsTab tab = v.getId() == R.id.btn_comments ? CommentsTab.COMMENTS : CommentsTab.ARTICLE;

			MainActivity.startCommentsActivity(
				mContext,
				null,
				Long.valueOf(holder.item.objectID),
				holder.item.url,
				tab
			);
		}
	};

	public View.OnClickListener mCommentListener = new View.OnClickListener() {
		@Override
		public void onClick(View v) {
			CommentHolder holder = (CommentHolder) v.getTag();

			MainActivity.startCommentsActivity(
				mContext,
				null,
				Long.valueOf(holder.item.story_id),
				holder.item.story_url,
				CommentsTab.COMMENTS
			);
		}
	};

}