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using Android.Content;
using Android.Util;
using Android.Views;
using Android.Widget;
using AView = Android.Views.View;
using AListView = Android.Widget.ListView;
namespace Xamarin.Forms.Platform.Android
{
public class TableViewModelRenderer : CellAdapter
{
readonly TableView _view;
protected readonly Context Context;
Cell _restoreFocus;
public TableViewModelRenderer(Context context, AListView listView, TableView view) : base(context)
{
_view = view;
Context = context;
view.ModelChanged += (sender, args) => NotifyDataSetChanged();
listView.OnItemClickListener = this;
listView.OnItemLongClickListener = this;
}
public override int Count
{
get
{
var count = 0;
//Get each adapter's count + 1 for the header
int section = _view.Model.GetSectionCount();
for (var i = 0; i < section; i++)
count += _view.Model.GetRowCount(i) + 1;
return count;
}
}
public override object this[int position]
{
get
{
bool isHeader, nextIsHeader;
Cell cell = GetCellForPosition(position, out isHeader, out nextIsHeader);
return cell;
}
}
public override int ViewTypeCount
{
get
{
//The headers count as a view type too
var viewTypeCount = 1;
//Get each adapter's ViewTypeCount
int section = _view.Model.GetSectionCount();
for (var i = 0; i < section; i++)
viewTypeCount += _view.Model.GetRowCount(i);
return viewTypeCount;
}
}
public override bool AreAllItemsEnabled()
{
return false;
}
public override long GetItemId(int position)
{
return position;
}
public override AView GetView(int position, AView convertView, ViewGroup parent)
{
object obj = this[position];
if (obj == null)
return new AView(Context);
bool isHeader, nextIsHeader;
Cell item = GetCellForPosition(position, out isHeader, out nextIsHeader);
var makeBline = true;
var layout = convertView as ConditionalFocusLayout;
if (layout != null)
{
makeBline = false;
convertView = layout.GetChildAt(0);
}
else
layout = new ConditionalFocusLayout(Context) { Orientation = Orientation.Vertical };
AView aview = CellFactory.GetCell(item, convertView, parent, Context, _view);
if (!makeBline)
{
if (convertView != aview)
{
layout.RemoveViewAt(0);
layout.AddView(aview, 0);
}
}
else
layout.AddView(aview, 0);
AView bline;
if (makeBline)
{
#pragma warning disable 618
bline = new AView(Context) { LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FillParent, 1) };
#pragma warning restore 618
layout.AddView(bline);
}
else
bline = layout.GetChildAt(1);
if (isHeader)
bline.SetBackgroundColor(Color.Accent.ToAndroid());
else if (nextIsHeader)
bline.SetBackgroundColor(global::Android.Graphics.Color.Transparent);
else
{
using (var value = new TypedValue())
{
int id = global::Android.Resource.Drawable.DividerHorizontalDark;
if (Context.Theme.ResolveAttribute(global::Android.Resource.Attribute.ListDivider, value, true))
id = value.ResourceId;
else if (Context.Theme.ResolveAttribute(global::Android.Resource.Attribute.Divider, value, true))
id = value.ResourceId;
bline.SetBackgroundResource(id);
}
}
layout.ApplyTouchListenersToSpecialCells(item);
if (_restoreFocus == item)
{
if (!aview.HasFocus)
aview.RequestFocus();
_restoreFocus = null;
}
else if (aview.HasFocus)
aview.ClearFocus();
return layout;
}
public override bool IsEnabled(int position)
{
bool isHeader, nextIsHeader;
Cell item = GetCellForPosition(position, out isHeader, out nextIsHeader);
return !isHeader && item.IsEnabled;
}
protected override Cell GetCellForPosition(int position)
{
bool isHeader, nextIsHeader;
return GetCellForPosition(position, out isHeader, out nextIsHeader);
}
protected override void HandleItemClick(AdapterView parent, AView nview, int position, long id)
{
int sectionCount = _view.Model.GetSectionCount();
for (var sectionIndex = 0; sectionIndex < sectionCount; sectionIndex++)
{
if (position == 0)
return;
int size = _view.Model.GetRowCount(sectionIndex) + 1;
if (position < size)
{
_view.Model.RowSelected(sectionIndex, position - 1);
return;
}
position -= size;
}
}
Cell GetCellForPosition(int position, out bool isHeader, out bool nextIsHeader)
{
isHeader = false;
nextIsHeader = false;
int sectionCount = _view.Model.GetSectionCount();
for (var sectionIndex = 0; sectionIndex < sectionCount; sectionIndex ++)
{
int size = _view.Model.GetRowCount(sectionIndex) + 1;
if (position == 0)
{
isHeader = true;
nextIsHeader = size == 0 && sectionIndex < sectionCount - 1;
Cell header = _view.Model.GetHeaderCell(sectionIndex);
Cell resultCell = null;
if (header != null)
resultCell = header;
if (resultCell == null)
resultCell = new TextCell { Text = _view.Model.GetSectionTitle(sectionIndex) };
resultCell.Parent = _view;
return resultCell;
}
if (position < size)
{
nextIsHeader = position == size - 1;
return (Cell)_view.Model.GetItem(sectionIndex, position - 1);
}
position -= size;
}
return null;
}
}
}
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