/*
* GeoSolutions Android Map Library - Digital field mapping on Android based devices
* Copyright (C) 2013 GeoSolutions (www.geo-solutions.it)
*
* 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 3 of the License, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package it.geosolutions.android.map.adapters;
import java.util.ArrayList;
import java.util.List;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
import android.widget.BaseAdapter;
/**
* @author Lorenzo Natali (www.geo-solutions.it)
*
*/
abstract public class SectionAdapter extends BaseAdapter {
abstract protected View getHeaderView(String caption, int index,
View convertView, ViewGroup parent);
private List<Section> sections = new ArrayList<Section>();
private static int TYPE_SECTION_HEADER = 0;
public SectionAdapter() {
super();
}
public void addSection(String caption, Adapter adapter) {
sections.add(new Section(caption, adapter));
}
public void clear() {
sections.clear();
}
public Object getItem(int position) {
for (Section section : this.sections) {
if (position == 0) {
return (section);
}
int size = section.adapter.getCount() + 1;
if (position < size) {
return (section.adapter.getItem(position - 1));
}
position -= size;
}
return (null);
}
public int getCount() {
int total = 0;
for (Section section : this.sections) {
total += section.adapter.getCount() + 1; // add one for header
}
return (total);
}
public int getViewTypeCount() {
int total = 1; // one for the header, plus those from sections
for (Section section : this.sections) {
total += section.adapter.getViewTypeCount();
}
return (total);
}
public int getItemViewType(int position) {
int typeOffset = TYPE_SECTION_HEADER + 1; // start counting from here
for (Section section : this.sections) {
if (position == 0) {
return (TYPE_SECTION_HEADER);
}
int size = section.adapter.getCount() + 1;
if (position < size) {
return (typeOffset + section.adapter
.getItemViewType(position - 1));
}
position -= size;
typeOffset += section.adapter.getViewTypeCount();
}
return (-1);
}
public boolean areAllItemsSelectable() {
return (false);
}
public boolean isEnabled(int position) {
return (getItemViewType(position) != TYPE_SECTION_HEADER);
}
public View getView(int position, View convertView, ViewGroup parent) {
int sectionIndex = 0;
for (Section section : this.sections) {
if (position == 0) {
return (getHeaderView(section.caption, sectionIndex,
convertView, parent));
}
int size = section.adapter.getCount() + 1;
if (position < size) {
return (section.adapter.getView(position - 1, convertView,
parent));
}
position -= size;
sectionIndex++;
}
return (null);
}
public long getItemId(int position) {
return (position);
}
class Section {
String caption;
Adapter adapter;
Section(String caption, Adapter adapter) {
this.caption = caption;
this.adapter = adapter;
}
}
}