/// <summary>
/// Scrolls to chosen item
/// </summary>
public bool ScrollToItem(MItem item)
{
// Do we have more than one item?
if (DisplayedItems.Count > 0)
{
// Iterate over all displayed items
foreach (MItem searchedItem in DisplayedItems)
{
// Is this item we are looking for?
if (searchedItem == item)
{
// Update scroll-bar value
Scrollbar.Value = searchedItem.Bounds.Y;
// Force update
Scrollbar.ForceUpdate();
// Redraw scroll-bar
Scrollbar.Invalidate();
// Set scroll view to chosen item
Panel.AutoScrollPosition = new Point(0, searchedItem.Bounds.Y);
// Refresh
Refresh();
// Success
return(true);
}
}
}
// Fail -> searched item not found
return(false);
}
/// <summary>
/// Filter items
/// </summary>
private void FilterItems()
{
// Clear displayed items
DisplayedItems.Clear();
// Do we have any items to filter?
if (Items.Count > 0)
{
// Iterate over all items
foreach (MItem item in Items)
{
// Do primary text contains searched word (filter) ?
if (item.PrimaryText.ToLower().Contains(_filter.ToLower()))
{
// Add item to displayed-items collection
DisplayedItems.Add(item);
}
}
}
// Redraw control
Invalidate(true);
// Force update component
Component.Outdated = true;
// Force update scroll-bar
Scrollbar.ForceUpdate();
// Call resize
OnResize(EventArgs.Empty);
// Refresh control
Refresh();
}
/// <summary>
/// Items changed
/// </summary>
private void ItemsChanged(object sender, NotifyCollectionChangedEventArgs e)
{
// Update items owner
foreach (MItem item in Items)
{
item.Owner = this;
}
// Filter items
FilterItems();
// Redraw control
Invalidate(true);
// Force update component
Component.Outdated = true;
// Force update scroll-bar
Scrollbar.ForceUpdate();
// Call resize
OnResize(EventArgs.Empty);
// Refresh control
Refresh();
}
/// <summary>
/// On resize event
/// </summary>
protected override void OnResize(EventArgs e)
{
// Base call
base.OnResize(e);
// Update scroll-bar
Scrollbar.ForceUpdate();
}
/// <summary>
/// Clears both Items and DisplayedItems collections. Resets selected item property.
/// </summary>
public void Clear()
{
// Reset selected item
SelectedItem = null;
// Clear items
Items.Clear();
// Clear displayed items
DisplayedItems.Clear();
// Redraw control
Invalidate(true);
// Force update component
Component.Outdated = true;
// Force update scroll-bar
Scrollbar.ForceUpdate();
// Refresh control
Refresh();
}
/// <summary>
/// Mouse move
/// </summary>
private void OnPanelMouseMove(object sender, MouseEventArgs e)
{
// Show scroll-bar
Scrollbar.Wake();
// Update mouse location
mouseLocation = new Point(e.Location.X - Panel.AutoScrollPosition.X, e.Location.Y - Panel.AutoScrollPosition.Y);
// Handle M-Items events
// Draw items
if (DisplayedItems.Count > 0)
{
// Iterate over all displayed items
foreach (MItem item in DisplayedItems)
{
// Modify mouse event arguments
MouseEventArgs args = new MouseEventArgs(
e.Button,
e.Clicks,
e.X,
Math.Abs(Panel.AutoScrollPosition.Y) + e.Y,
e.Delta
);
// Trigger mouse move
item.TriggerMouseMove(this, args);
// Trigger MouseEnter and MouseLeave methods of M-Items
// Do mouse hover over item?
if (item.Bounds.Contains(mouseLocation))
{
// Didn't we already triggered OnMouseEnter method for this item?
if (_tempItem == item)
{
return;
}
// Trigger mouse leave before changing temp-item
if (_tempItem != null)
{
_tempItem.TriggerMouseLeave(this, e);
}
// Update currently hovered item
_tempItem = item;
// Trigger item's OnMouseEnter method
item.TriggerMouseEnter(this, e);
}
}
}
// Redraw control
Invalidate(true);
// Force update component
Component.Outdated = true;
// Force update scroll-bar
Scrollbar.ForceUpdate();
// Call resize
OnResize(EventArgs.Empty);
// Refresh control
Refresh();
// Redraw panel
Panel.Invalidate();
}
