protected virtual void OnItemClick(int index ,ExpandableItem item)
{
EventHandler<ExpandableItemClickEventArgs> handler = this.ItemClick;
if (handler != null)
{
handler(this, new ExpandableItemClickEventArgs(index, item));
}
}
public ExpandableItemClickEventArgs(int index, ExpandableItem item)
{
this.Index = index;
this.Item = item;
}
private void ValidateExpandableItem(ExpandableItem expandableItem)
{
if (expandableItem == null)
{
throw new ArgumentNullException("expandableItem",
"You can't use a null instance of ExpandableItem as parameter.");
}
}
public void ConfigureButtonContent(View view, ExpandableItem expandableItem)
{
if (expandableItem.HasBackgroundId())
{
int backgroundId = expandableItem.BackgroundId;
view.SetBackgroundResource(backgroundId);
}
if (expandableItem.HasTitle())
{
var button = view as Button;
if (button==null)
{
return;
}
string text = expandableItem.Title;
button.Text = text;
}
if (expandableItem.HasResourceId())
{
var imageButton = view as ImageButton;
if (imageButton== null)
{
return;
}
int resourceId = expandableItem.ResourceId;
imageButton.SetImageResource(resourceId);
}
}
/// <summary>
/// Changes the ExpandableItem associated to a given position and updates the Button widget to
/// show the new ExpandableItem information.
/// </summary>
/// <param name="expandableItemPosition"></param>
/// <param name="expandableItem"></param>
public void UpdateExpandableItem(int expandableItemPosition, ExpandableItem expandableItem)
{
this.ValidateExpandableItem(expandableItem);
this.ExpandableItems.RemoveAt(expandableItemPosition);
this.ExpandableItems.Insert(expandableItemPosition, expandableItem);
int buttonPosition = this._buttons.Count - 1 - expandableItemPosition;
this.ConfigureButtonContent(this._buttons[buttonPosition], expandableItem);
}
private void UpdateIconsFirstButtonResource(int resourceId)
{
var arrowUpExpandableItem = new ExpandableItem
{
ResourceId = resourceId
};
this.IconsExpandableSelector.UpdateExpandableItem(0, arrowUpExpandableItem);
}
private void SwipeFirstItem(int position, ExpandableItem clickedItem)
{
var firstItem = this.SizesExpandableSelector.ExpandableItems[0];
this.SizesExpandableSelector.UpdateExpandableItem(0, clickedItem);
this.SizesExpandableSelector.UpdateExpandableItem(position, firstItem);
}
