/*
* Copyright (c) 2014 OpenSilk Productions LLC
*
* 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 org.opensilk.common.ui.recycler;
import android.support.annotation.LayoutRes;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
/**
* Created by drew on 11/20/14.
*/
public abstract class RecyclerListAdapter<T, VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> {
private final List<T> items;
public RecyclerListAdapter() {
this(new ArrayList<T>(100));
}
public RecyclerListAdapter(List<T> items) {
this.items = items;
}
@Override
public int getItemCount() {
return items.size();
}
public List<T> getItems() {
return items;
}
public T getItem(int pos) {
return items.get(pos);
}
public boolean addAll(Collection<? extends T> collection) {
int start = items.size();
if (items.addAll(collection)) {
if (start > 0) {
notifyItemRangeInserted(start, collection.size());
} else {
notifyDataSetChanged();
}
return true;
}
return false;
}
public boolean addAll(int pos, Collection<? extends T> collection) {
int size = items.size();
if (items.addAll(pos, collection)) {
if (size > 0) {
notifyItemRangeInserted(pos, collection.size());
} else {
notifyDataSetChanged();
}
return true;
}
return false;
}
public boolean replaceAll(Collection<? extends T> collection) {
items.clear();
if (items.addAll(collection)) {
notifyDataSetChanged();
return true;
}
return false;
}
public boolean addItem(T item) {
if (items.add(item)) {
//notifyItemInserted(items.indexOf(item));
// bug in StaggeredGrid tries to arrayCopy items.size() + 1 and barfs
notifyItemRangeInserted(items.indexOf(item), 0);
return true;
}
return false;
}
public void addItem(int pos, T item) {
items.add(pos, item);
notifyItemInserted(pos);
}
public boolean removeItem(T item) {
int pos = items.indexOf(item);
if (items.remove(item)) {
notifyItemRemoved(pos);
return true;
}
return false;
}
public T removeItem(int pos) {
T item = items.remove(pos);
notifyItemRemoved(pos);
return item;
}
public int indexOf(T item) {
return items.indexOf(item);
}
public boolean swap(int pos1, int pos2) {
try {
Collections.swap(items, pos1, pos2);
notifyItemMoved(pos1, pos2);
notifyItemMoved(pos2, pos1);
return true;
} catch (IndexOutOfBoundsException e) {
return false;
}
}
public boolean swap(T item1, T item2) {
return swap(indexOf(item1), indexOf(item2));
}
public boolean move(int from, int to) {
if (from < 0 || to > items.size()) {
return false;
}
T item = items.remove(from);
items.add(to, item);
notifyItemMoved(from, to);
return true;
}
public void clear() {
items.clear();
notifyDataSetChanged();
}
public boolean isEmpty() {
return items.isEmpty();
}
//Convenience function
protected static View inflate(ViewGroup parent, @LayoutRes int id) {
return LayoutInflater.from(parent.getContext()).inflate(id, parent, false);
}
}