chinwag-android/app/src/main/java/com/keylesspalace/tusky/adapter/AccountAdapter.java

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/* Copyright 2017 Andrew Dawson
*
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* This file is a part of Tusky.
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*
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* 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.
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*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.adapter;
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import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.RecyclerView;
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import com.keylesspalace.tusky.entity.Account;
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import com.keylesspalace.tusky.interfaces.AccountActionListener;
import com.keylesspalace.tusky.util.ListUtils;
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import java.util.ArrayList;
import java.util.List;
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public abstract class AccountAdapter extends RecyclerView.Adapter {
static final int VIEW_TYPE_ACCOUNT = 0;
static final int VIEW_TYPE_FOOTER = 1;
List<Account> accountList;
AccountActionListener accountActionListener;
private boolean bottomLoading;
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AccountAdapter(AccountActionListener accountActionListener) {
this.accountList = new ArrayList<>();
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this.accountActionListener = accountActionListener;
bottomLoading = false;
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}
@Override
public int getItemCount() {
return accountList.size() + (bottomLoading ? 1 : 0);
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}
@Override
public int getItemViewType(int position) {
if (position == accountList.size() && bottomLoading) {
return VIEW_TYPE_FOOTER;
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} else {
return VIEW_TYPE_ACCOUNT;
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}
}
public void update(@NonNull List<Account> newAccounts) {
accountList = ListUtils.removeDuplicates(newAccounts);
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notifyDataSetChanged();
}
public void addItems(@NonNull List<Account> newAccounts) {
int end = accountList.size();
Account last = accountList.get(end - 1);
if (last != null && !findAccount(newAccounts, last.getId())) {
accountList.addAll(newAccounts);
notifyItemRangeInserted(end, newAccounts.size());
}
}
public void setBottomLoading(boolean loading) {
boolean wasLoading = bottomLoading;
if(wasLoading == loading) {
return;
}
bottomLoading = loading;
if(loading) {
notifyItemInserted(accountList.size());
} else {
notifyItemRemoved(accountList.size());
}
}
private static boolean findAccount(@NonNull List<Account> accounts, String id) {
for (Account account : accounts) {
if (account.getId().equals(id)) {
return true;
}
}
return false;
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}
@Nullable
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public Account removeItem(int position) {
if (position < 0 || position >= accountList.size()) {
return null;
}
Account account = accountList.remove(position);
notifyItemRemoved(position);
return account;
}
public void addItem(@NonNull Account account, int position) {
if (position < 0 || position > accountList.size()) {
return;
}
accountList.add(position, account);
notifyItemInserted(position);
}
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}