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package org.lineageos.eleven.widgets;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import org.lineageos.eleven.R;
import java.util.LinkedHashMap;
import java.util.Map;
public class SeparatedListAdapter extends BaseAdapter {
public final Map<String, Adapter> mSections = new LinkedHashMap<String, Adapter>();
public final ArrayAdapter<String> mHeaders;
public final static int TYPE_SECTION_HEADER = 0;
/**
* Constructor of <code>SeparatedListAdapter</code>
*
* @param context The {@link Context} to use.
*/
public SeparatedListAdapter(final Context context) {
mHeaders = new ArrayAdapter<String>(context, R.layout.list_header);
}
/**
* {@inheritDoc}
*/
@Override
public Object getItem(int position) {
for (final Object section : mSections.keySet()) {
final Adapter adapter = mSections.get(section);
final int size = adapter.getCount() + 1;
// check if position inside this section
if (position == 0) {
return section;
}
if (position < size) {
return adapter.getItem(position - 1);
}
// otherwise jump into next section
position -= size;
}
return null;
}
/**
* {@inheritDoc}
*/
@Override
public int getCount() {
// total together all mSections, plus one for each section header
int total = 0;
for (final Adapter adapter : mSections.values()) {
total += adapter.getCount() + 1;
}
return total;
}
/**
* {@inheritDoc}
*/
@Override
public int getViewTypeCount() {
// assume that mHeaders count as one, then total all mSections
int total = 1;
for (final Adapter adapter : mSections.values()) {
total += adapter.getViewTypeCount();
}
return total;
}
/**
* {@inheritDoc}
*/
@Override
public int getItemViewType(int position) {
int type = 1;
for (final Object section : mSections.keySet()) {
final Adapter adapter = mSections.get(section);
final int size = adapter.getCount() + 1;
// check if position inside this section
if (position == 0) {
return TYPE_SECTION_HEADER;
}
if (position < size) {
return type + adapter.getItemViewType(position - 1);
}
// otherwise jump into next section
position -= size;
type += adapter.getViewTypeCount();
}
return -1;
}
public boolean areAllItemsSelectable() {
return false;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isEnabled(final int position) {
return getItemViewType(position) != TYPE_SECTION_HEADER;
}
/**
* {@inheritDoc}
*/
@Override
public View getView(int position, final View convertView, final ViewGroup parent) {
int sectionnum = 0;
for (final Object section : mSections.keySet()) {
final Adapter adapter = mSections.get(section);
final int size = adapter.getCount() + 1;
// check if position inside this section
if (position == 0) {
return mHeaders.getView(sectionnum, convertView, parent);
}
if (position < size) {
return adapter.getView(position - 1, convertView, parent);
}
// otherwise jump into next section
position -= size;
sectionnum++;
}
return null;
}
/**
* {@inheritDoc}
*/
@Override
public long getItemId(final int position) {
return position;
}
public void addSection(final String section, final Adapter adapter) {
mHeaders.add(section);
mSections.put(section, adapter);
}
}
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