/// <summary>
/// 将某一项移动到最顶端
/// </summary>
/// <param name="index"></param>
public void MoveItemToTop(int index)
{
if (index <= 0)
{
return;
}
if (ufiUserControls.Count <= index)
{
return;
}
if (ufiUserControls.Count <= 1)
{
return;
}
UserFriendItemUserControl ufiItem = ufiUserControls[index];
ufiUserControls.RemoveAt(index);
ufiUserControls.Insert(0, ufiItem);
dataIsChange = true;
this.RedrawItemsView();
}
/// <summary>
/// 添加内容项
/// </summary>
/// <param name="item"></param>
/// <param name="isRedrawView">是否立即刷新界面</param>
public void Add(UserFriendItemUserControl item, bool isRedrawView = true)
{
ufiUserControls.Add(item);
dataIsChange = true;
item.Click += item_Click;
if (isRedrawView)
{
this.RedrawItemsView();
}
}
/// <summary>
/// 重绘界面
/// </summary>
public void RedrawItemsView()
{
do
{
if (!dataIsChange)
{
break;
}
lock (this)
{
dataIsChange = false;
panel_box.Controls.Clear();
UserFriendItemUserControl[] items = ufiUserControls.ToArray();
Size _size = panel_box.Size;
_size.Height = items.Length * itemHeight;
bool isScroll = _size.Height > this.Height;
_size.Width = isScroll ? this.Width - 10 : this.Width;
if (isScroll)
{
vScrollBar_box.Show();
}
else
{
vScrollBar_box.Hide();
}
if (isScroll)
{
vScrollBar_box.Maximum = (_size.Height - this.Size.Height) / 5 + vScrollBar_box.LargeChange;
}
panel_box.Size = _size;
if (items.Length == 0)
{
break;
}
for (int i = 0; i < items.Length; i++)
{
UserFriendItemUserControl item = items[i];
item.Location = new Point(0, i * itemHeight);
item.Size = new Size(panel_box.Width, itemHeight);
item.Index = i;
panel_box.Controls.Add(item);
}
}
} while (false);
}
private void RedrawViewByUserInfoModels(IEnumerable <UserInfoModel> items)
{
this.userFriendsListViewUserControl_friendList.RemoveAll(false);
foreach (UserInfoModel item in items)
{
UserFriendItemUserControl ufiuc = new UserFriendItemUserControl();
ufiuc.label_NickName.Text = item.NickName;
this.userFriendsListViewUserControl_friendList.Add(ufiuc, false);
}
this.userFriendsListViewUserControl_friendList.RedrawItemsView();
}