/*
* Copyright 2012 GitHub Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.mobile.gauges.ui;
import android.view.View;
import android.widget.BaseAdapter;
import android.widget.HeaderViewListAdapter;
import android.widget.ListView;
import android.widget.ListView.FixedViewInfo;
import java.util.ArrayList;
/**
* Utility adapter that supports adding headers and footers
*
* @param <E>
*/
public class HeaderFooterListAdapter<E extends BaseAdapter> extends
HeaderViewListAdapter {
private final ListView list;
private final ArrayList<FixedViewInfo> headers;
private final ArrayList<FixedViewInfo> footers;
private final E wrapped;
/**
* Create header footer adapter
*
* @param view
* @param adapter
*/
public HeaderFooterListAdapter(ListView view, E adapter) {
this(new ArrayList<FixedViewInfo>(), new ArrayList<FixedViewInfo>(),
view, adapter);
}
private HeaderFooterListAdapter(ArrayList<FixedViewInfo> headerViewInfos,
ArrayList<FixedViewInfo> footerViewInfos, ListView view, E adapter) {
super(headerViewInfos, footerViewInfos, adapter);
headers = headerViewInfos;
footers = footerViewInfos;
list = view;
wrapped = adapter;
}
/**
* Add non-selectable header view with no data
*
* @see #addHeader(View, Object, boolean)
* @param view
* @return this adapter
*/
public HeaderFooterListAdapter<E> addHeader(View view) {
return addHeader(view, null, false);
}
/**
* Add header
*
* @param view
* @param data
* @param isSelectable
* @return this adapter
*/
public HeaderFooterListAdapter<E> addHeader(View view, Object data,
boolean isSelectable) {
FixedViewInfo info = list.new FixedViewInfo();
info.view = view;
info.data = data;
info.isSelectable = isSelectable;
headers.add(info);
wrapped.notifyDataSetChanged();
return this;
}
/**
* Add non-selectable footer view with no data
*
* @see #addFooter(View, Object, boolean)
* @param view
* @return this adapter
*/
public HeaderFooterListAdapter<E> addFooter(View view) {
return addFooter(view, null, false);
}
/**
* Add footer
*
* @param view
* @param data
* @param isSelectable
* @return this adapter
*/
public HeaderFooterListAdapter<E> addFooter(View view, Object data,
boolean isSelectable) {
FixedViewInfo info = list.new FixedViewInfo();
info.view = view;
info.data = data;
info.isSelectable = isSelectable;
footers.add(info);
wrapped.notifyDataSetChanged();
return this;
}
@Override
public boolean removeHeader(View v) {
boolean removed = super.removeHeader(v);
if (removed)
wrapped.notifyDataSetChanged();
return removed;
}
/**
* Remove all headers
*
* @return true if headers were removed, false otherwise
*/
public boolean clearHeaders() {
boolean removed = false;
if (!headers.isEmpty()) {
FixedViewInfo[] infos = headers.toArray(new FixedViewInfo[headers
.size()]);
for (FixedViewInfo info : infos)
removed = super.removeHeader(info.view) || removed;
}
if (removed)
wrapped.notifyDataSetChanged();
return removed;
}
/**
* Remove all footers
*
* @return true if headers were removed, false otherwise
*/
public boolean clearFooters() {
boolean removed = false;
if (!footers.isEmpty()) {
FixedViewInfo[] infos = footers.toArray(new FixedViewInfo[footers
.size()]);
for (FixedViewInfo info : infos)
removed = super.removeFooter(info.view) || removed;
}
if (removed)
wrapped.notifyDataSetChanged();
return removed;
}
@Override
public boolean removeFooter(View v) {
boolean removed = super.removeFooter(v);
if (removed)
wrapped.notifyDataSetChanged();
return removed;
}
@Override
public E getWrappedAdapter() {
return wrapped;
}
@Override
public boolean isEmpty() {
return wrapped.isEmpty();
}
}