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package org.holoeverywhere.widget;
import java.util.ArrayList;
import java.util.List;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ListAdapter;
public class HeaderViewListAdapter extends ListAdapterWrapper implements Filterable {
public static final class ViewInfo {
public Object data;
public boolean isSelectable;
public View view;
}
private static final List<ViewInfo> EMPTY_INFO_LIST = new ArrayList<ViewInfo>();
boolean mAreAllFixedViewsSelectable;
private final List<ViewInfo> mFooterViewInfos;
private final List<ViewInfo> mHeaderViewInfos;
private final boolean mIsFilterable;
public HeaderViewListAdapter(List<ViewInfo> headerViewInfos,
List<ViewInfo> footerViewInfos, ListAdapter adapter, ListAdapterCallback listener) {
super(adapter, listener);
mIsFilterable = adapter instanceof Filterable;
if (headerViewInfos == null) {
mHeaderViewInfos = EMPTY_INFO_LIST;
} else {
mHeaderViewInfos = headerViewInfos;
}
if (footerViewInfos == null) {
mFooterViewInfos = EMPTY_INFO_LIST;
} else {
mFooterViewInfos = footerViewInfos;
}
mAreAllFixedViewsSelectable =
areAllListInfosSelectable(mHeaderViewInfos)
&& areAllListInfosSelectable(mFooterViewInfos);
}
@Override
public boolean areAllItemsEnabled() {
return mAreAllFixedViewsSelectable && getWrappedAdapter().areAllItemsEnabled();
}
private boolean areAllListInfosSelectable(List<ViewInfo> infos) {
if (infos != null) {
for (ViewInfo info : infos) {
if (!info.isSelectable) {
return false;
}
}
}
return true;
}
@Override
public int getCount() {
return getFootersCount() + getHeadersCount() + getWrappedAdapter().getCount();
}
@Override
public Filter getFilter() {
if (mIsFilterable) {
return ((Filterable) getWrappedAdapter()).getFilter();
}
return null;
}
public int getFootersCount() {
return mFooterViewInfos.size();
}
public int getHeadersCount() {
return mHeaderViewInfos.size();
}
@Override
public Object getItem(int position) {
int numHeaders = getHeadersCount();
if (position < numHeaders) {
return mHeaderViewInfos.get(position).data;
}
final int adjPosition = position - numHeaders;
int adapterCount = getWrappedAdapter().getCount();
if (adjPosition < adapterCount) {
return super.getItem(adjPosition);
}
return mFooterViewInfos.get(adjPosition - adapterCount).data;
}
@Override
public long getItemId(int position) {
int numHeaders = getHeadersCount();
if (position >= numHeaders) {
int adjPosition = position - numHeaders;
int adapterCount = getWrappedAdapter().getCount();
if (adjPosition < adapterCount) {
return super.getItemId(adjPosition);
}
}
return AdapterView.INVALID_ROW_ID;
}
@Override
public int getItemViewType(int position) {
int numHeaders = getHeadersCount();
if (getWrappedAdapter() != null && position >= numHeaders) {
int adjPosition = position - numHeaders;
int adapterCount = getWrappedAdapter().getCount();
if (adjPosition < adapterCount) {
return super.getItemViewType(adjPosition);
}
}
return AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
int numHeaders = getHeadersCount();
if (position < numHeaders) {
convertView = mHeaderViewInfos.get(position).view;
} else {
final int adjPosition = position - numHeaders;
int adapterCount = getWrappedAdapter().getCount();
if (adjPosition < adapterCount) {
convertView = getWrappedAdapter().getView(adjPosition, convertView, parent);
} else {
convertView = mFooterViewInfos.get(adjPosition - adapterCount).view;
}
}
return onPrepareView(convertView, position);
}
@Override
public boolean isEnabled(int position) {
int numHeaders = getHeadersCount();
if (position < numHeaders) {
return mHeaderViewInfos.get(position).isSelectable;
}
final int adjPosition = position - numHeaders;
int adapterCount = getWrappedAdapter().getCount();
if (adjPosition < adapterCount) {
return super.isEnabled(adjPosition);
}
return mFooterViewInfos.get(adjPosition - adapterCount).isSelectable;
}
public boolean removeFooter(View v) {
for (int i = 0; i < mFooterViewInfos.size(); i++) {
ViewInfo info = mFooterViewInfos.get(i);
if (info.view == v) {
mFooterViewInfos.remove(i);
mAreAllFixedViewsSelectable =
areAllListInfosSelectable(mHeaderViewInfos)
&& areAllListInfosSelectable(mFooterViewInfos);
return true;
}
}
return false;
}
public boolean removeHeader(View v) {
for (int i = 0; i < mHeaderViewInfos.size(); i++) {
ViewInfo info = mHeaderViewInfos.get(i);
if (info.view == v) {
mHeaderViewInfos.remove(i);
mAreAllFixedViewsSelectable =
areAllListInfosSelectable(mHeaderViewInfos)
&& areAllListInfosSelectable(mFooterViewInfos);
return true;
}
}
return false;
}
}
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