BuzzBuddyAdapter.java

package com.buzzbuddy.android;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.ResolveInfo;
import android.graphics.Rect;
import android.support.v4.app.Fragment;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.TouchDelegate;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;

import com.emilsjolander.components.stickylistheaders.StickyListHeadersAdapter;

public class BuzzBuddyAdapter extends BaseAdapter implements StickyListHeadersAdapter {

	private final List<ResolveInfo> assignedApps, unassignedApps, recommendedApps;
	private final LayoutInflater inflater;
	private final BuzzBuddyActivity context;
	private Set<Integer> checkedItems;
	private final SparseArray<ImageView> playbackViews;
	private final BuzzBuddyApp app;
	private final BuzzBuddyFragment fragment;

	public BuzzBuddyAdapter(final Context context, final Fragment fragment, final List<ResolveInfo> assignedApps,
			final List<ResolveInfo> unassignedApps, final List<ResolveInfo> recommendedApps) {
		inflater = LayoutInflater.from(context);
		this.assignedApps = assignedApps;
		this.unassignedApps = unassignedApps;
		this.recommendedApps = recommendedApps;
		this.context = (BuzzBuddyActivity) context;
		this.fragment = (BuzzBuddyFragment) fragment;
		this.app = (BuzzBuddyApp) this.context.getApplication();
		playbackViews = new SparseArray<ImageView>();
	}

	@Override
	public int getCount() {
		return assignedApps.size() + unassignedApps.size() + recommendedApps.size();
	}

	@Override
	public Object getItem(final int position) {
		return getItemFromLists(position);
	}

	private ResolveInfo getItemFromLists(final int position) {
		if (position < assignedApps.size()) {
			return assignedApps.get(position);
		} else if (position < assignedApps.size() + recommendedApps.size()) {
			return recommendedApps.get(position - assignedApps.size());
		} else {
			return unassignedApps.get(position - assignedApps.size() - recommendedApps.size());
		}

	}

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

	private static class ViewHolder {
		CheckBox checkBox;
		ImageView icon;
		TextView appName;
		ImageView playback;
	}

	@Override
	public View getView(final int position, final View convertView, final ViewGroup parent) {

		View view = null;

		if (convertView == null) {
			view = inflater.inflate(R.layout.app_row, null);
			final ViewHolder viewHolder = new ViewHolder();
			viewHolder.checkBox = (CheckBox) view.findViewById(R.id.checkbox);
			viewHolder.icon = (ImageView) view.findViewById(R.id.app_icon);
			viewHolder.appName = (TextView) view.findViewById(R.id.app_name);
			viewHolder.playback = (ImageView) view.findViewById(R.id.playback);
			view.setTag(viewHolder);
		} else {
			view = convertView;
		}

		final ViewHolder holder = (ViewHolder) view.getTag();
		final ResolveInfo item = getItemFromLists(position);
		final ApplicationInfo applicationInfo = item.activityInfo.applicationInfo;

		holder.icon.setImageDrawable(app.getDrawableManager().fetchDrawable(applicationInfo.packageName, item));
		holder.appName.setText(applicationInfo.loadLabel(context.getPackageManager()));

		final CheckBox checkBox = holder.checkBox;
		final ImageView playback = holder.playback;
		if (position >= assignedApps.size()) {
			playback.setVisibility(View.GONE);
			checkBox.setVisibility(View.GONE);
		} else {
			playback.setVisibility(View.VISIBLE);
			checkBox.setVisibility(View.VISIBLE);
			playback.setTag(position);
			playback.setOnClickListener(fragment);
			checkBox.setTag(position);
			checkBox.setChecked(checkedItems != null && checkedItems.contains(position));
			checkBox.setOnCheckedChangeListener(fragment);
			parent.post(new Runnable() {
				// Post in the parent's message queue to make sure the parent
				// lays out its children before we call getHitRect()
				@Override
				public void run() {
					final Rect r = new Rect();
					playback.getHitRect(r);
					r.top = 0;
					r.bottom = parent.getHeight();
					r.right += parent.getWidth() - playback.getRight();
					parent.setTouchDelegate(new TouchDelegate(r, playback));
				}
			});

			playbackViews.append(position, playback);

		}

		return view;
	}

	@Override
	public View getHeaderView(final int position, View convertView, final ViewGroup parent) {
		HeaderViewHolder holder;
		if (convertView == null) {
			holder = new HeaderViewHolder();
			convertView = inflater.inflate(R.layout.header, parent, false);
			holder.text = (TextView) convertView.findViewById(R.id.text);
			convertView.setTag(holder);
		} else {
			holder = (HeaderViewHolder) convertView.getTag();
		}

		// set header text as first char in name
		if (position >= assignedApps.size() + recommendedApps.size()) {
			holder.text.setText(context.getString(R.string.unrecorded_apps));
		} else if (position >= assignedApps.size()) {
			holder.text.setText(context.getString(R.string.recommended_apps));
		} else {
			holder.text.setText(context.getString(R.string.recorded_apps));
		}

		return convertView;
	}

	// remember that these have to be static, postion=1 should walys return the
	// same Id that is.
	@Override
	public long getHeaderId(final int position) {
		// return the first character of the country as ID because this is what
		// headers are based upon
		if (position >= assignedApps.size() + recommendedApps.size()) {
			return 0;
		} else if (position >= assignedApps.size()) {
			return 2;
		} else {
			return 1;
		}
	}

	static class HeaderViewHolder {
		TextView text;
	}

	public Set<Integer> getCheckedItems() {
		if (checkedItems == null) {
			checkedItems = new HashSet<Integer>();
		}
		return checkedItems;
	}

	public int getCheckedItemsSize() {
		if (checkedItems == null) {
			return 0;
		}
		return checkedItems.size();
	}

	public void disableOtherPlaybackButtonsForTime(final int index, final long delay) {
		for (int i = 0; i < playbackViews.size(); ++i) {
			final ImageView currentButton = playbackViews.get(i);
			if (currentButton == null) {
				continue;
			}
			if (i == index) {
				currentButton.setSelected(true);
				currentButton.postDelayed(new Runnable() {

					@Override
					public void run() {
						currentButton.setSelected(false);
					}

				}, delay);
				continue;
			}
			currentButton.setEnabled(false);
			currentButton.postDelayed(new Runnable() {

				@Override
				public void run() {
					currentButton.setEnabled(true);
				}

			}, delay);
		}
	}

	public void enablePlaybackButtons() {
		for (int i = 0; i < playbackViews.size(); ++i) {
			final ImageView currentButton = playbackViews.get(i);
			if (currentButton == null) {
				continue;
			}
			currentButton.setSelected(false);
			currentButton.setEnabled(true);
		}
	}
}