public void ScrollToItem(CustomListViewItem item)
{
if (_items.Count > 0)
{
this.ScrollControlIntoView(item);
}
}
private void AddMessage(CustomListViewItem item, bool selfSender)
{
CustomListViewItem lastItem = customListView1.GetLastItem();
bool insertDateInfo = false;
DateTime itemDate = (item as IChatMessageItem).Message.MessageDate;
if (lastItem == null)
{
insertDateInfo = true;
}
else
{
if (itemDate.Date > (lastItem as IChatMessageItem).Message.MessageDate.Date)
{
insertDateInfo = true;
}
}
bool wasScrolledToBottom = customListView1.IsScrolledToBottom();
if (insertDateInfo)
{
customListView1.AddItem(new ChatMessageInfoItem(new MessageItem(DateTime.UtcNow)));
}
customListView1.AddItem(item);
if (_chatItem.Selected && (wasScrolledToBottom || selfSender))
{
customListView1.ScrollToBottom();
}
}
public void SelectItem(CustomListViewItem item)
{
this.SuspendLayout();
OnSelectItem(item);
this.ResumeLayout();
}
public bool RemoveItem(CustomListViewItem item)
{
int index = _items.IndexOf(item);
if (index > -1)
{
this.SuspendLayout();
this.Controls.Remove(item);
_items.Remove(item);
item.Click -= item_Clicked;
item.DoubleClick -= item_DoubleClick;
item.MouseUp -= item_MouseUp;
item.KeyPress -= item_KeyPress;
item.KeyUp -= item_KeyUp;
item.KeyDown -= item_KeyDown;
item.SortList -= item_SortList;
ReArrangeItems();
if (_selectedItem == item)
{
if (_items.Count > 0)
{
if (index > 0)
{
OnSelectItem(_items[index - 1]);
}
else
{
OnSelectItem(_items[index]);
}
if (ItemClick != null)
{
ItemClick(this, EventArgs.Empty);
}
}
else
{
_selectedItem = null;
}
}
this.ResumeLayout();
return(true);
}
return(false);
}
private void ReArrangeItems()
{
if (_items.Count > 0)
{
int requiredItemWidth = this.Width - _borderPadding * 2 - this.Padding.Left - this.Padding.Right;
if (base.VerticalScroll.Visible)
{
requiredItemWidth -= 17;
}
bool doneOnce = false;
while (true)
{
//check width
if (requiredItemWidth != _items[0].Width)
{
for (int i = 0; i < _items.Count; i++)
{
_items[i].Width = requiredItemWidth;
}
}
//check item placement
_items[0].Location = new Point(this.Padding.Left, this.Padding.Top + this.AutoScrollPosition.Y);
for (int i = 1; i < _items.Count; i++)
{
CustomListViewItem previousControl = _items[i - 1];
CustomListViewItem currentControl = _items[i];
currentControl.Location = new Point(previousControl.Location.X, previousControl.Location.Y + previousControl.Height + this.Padding.Bottom);
}
CustomListViewItem lastItem = _items[_items.Count - 1];
if (!doneOnce && !base.VerticalScroll.Visible && ((lastItem.Top + lastItem.Height) > this.Height))
{
requiredItemWidth -= 17;
doneOnce = true;
continue;
}
break;
}
}
}
private bool OnSelectItem(CustomListViewItem item)
{
if (_selectedItem != item)
{
_selectedItem = item;
foreach (CustomListViewItem control in _items)
{
control.Selected = control.Equals(item);
}
return(true);
}
return(false);
}
public CustomListViewItem AddItem(CustomListViewItem item)
{
this.SuspendLayout();
item.SeparatorColor = this.SeparatorColor;
item.Click += item_Clicked;
item.DoubleClick += item_DoubleClick;
item.MouseUp += item_MouseUp;
item.KeyPress += item_KeyPress;
item.KeyUp += item_KeyUp;
item.KeyDown += item_KeyDown;
item.SortList += item_SortList;
if (_items.Count > 0)
{
item.Width = _items[_items.Count - 1].Width;
}
_items.Add(item);
this.Controls.Add(item);
if (_sortItems)
{
_items.Sort(delegate(CustomListViewItem item1, CustomListViewItem item2) { return(string.Compare(item1.ToString(), item2.ToString())); });
}
ReArrangeItems();
this.ResumeLayout();
if (_selectedItem == null)
{
_selectedItem = item;
item.Selected = true;
}
if (_autoScrollToBottom)
{
this.ScrollControlIntoView(item);
}
return(item);
}
public void TrimListFromTop(int totalItemsToKeep)
{
if (_items.Count > totalItemsToKeep)
{
int totalItemsToRemove = _items.Count - totalItemsToKeep;
List <CustomListViewItem> itemsToRemove = new List <CustomListViewItem>(totalItemsToRemove);
for (int i = 0; i < totalItemsToRemove; i++)
{
if (!_items[i].AllowTriming())
{
break;
}
itemsToRemove.Add(_items[i]);
}
this.SuspendLayout();
foreach (CustomListViewItem item in itemsToRemove)
{
this.Controls.Remove(item);
_items.Remove(item);
item.Click -= item_Clicked;
item.DoubleClick -= item_DoubleClick;
item.MouseUp -= item_MouseUp;
item.KeyPress -= item_KeyPress;
item.KeyUp -= item_KeyUp;
item.KeyDown -= item_KeyDown;
item.SortList -= item_SortList;
if (_selectedItem == item)
{
_selectedItem = null;
}
}
ReArrangeItems();
this.ResumeLayout();
}
}
private void item_MouseUp(object sender, MouseEventArgs e)
{
CustomListViewItem obj = sender as CustomListViewItem;
this.SuspendLayout();
bool selected = OnSelectItem(obj);
this.ResumeLayout();
if (selected && (ItemClick != null))
{
ItemClick(sender, EventArgs.Empty);
}
if (ItemMouseUp != null)
{
ItemMouseUp(sender, e);
}
}
public void InsertItemsAtTop(IEnumerable <CustomListViewItem> items)
{
this.SuspendLayout();
this.Controls.Clear();
foreach (CustomListViewItem item in items)
{
item.SeparatorColor = this.SeparatorColor;
item.Click += item_Clicked;
item.DoubleClick += item_DoubleClick;
item.MouseUp += item_MouseUp;
item.KeyPress += item_KeyPress;
item.KeyUp += item_KeyUp;
item.KeyDown += item_KeyDown;
item.SortList += item_SortList;
}
CustomListViewItem previousTopItem = null;
if (_items.Count > 0)
{
previousTopItem = _items[0];
}
_items.InsertRange(0, items);
this.Controls.AddRange(_items.ToArray());
ReArrangeItems();
if (previousTopItem != null)
{
this.ScrollControlIntoView(previousTopItem);
}
this.ResumeLayout();
}
public bool RemoveItem(CustomListViewItem item)
{
return(customListView1.RemoveItem(item));
}
public CustomListViewItem AddItem(CustomListViewItem item)
{
return(customListView1.AddItem(item));
}
