/// <summary>
/// Raises the <see cref="E:ItemCheckTriState"/> event.
/// </summary>
/// <param name="args">The <see cref="ZetaLib.Windows.Controls.TriStateCheckBoxesListView.ItemCheckTriStateEventArgs"/> instance containing the event data.</param>
protected virtual void OnItemCheckTriState(
ItemCheckTriStateEventArgs args )
{
if ( ItemCheckTriState != null )
{
ItemCheckTriState( this, args );
}
}
/// <summary>
/// Applies the given state to the given item.
/// Raises events, too.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="action">The action.</param>
/// <param name="stateImageIndex">Index of the state image.</param>
/// <param name="raiseEvents">if set to <c>true</c> [raise events].</param>
private void SetTriStateToItem(
ListViewItem item,
ListViewAction action,
int stateImageIndex,
bool raiseEvents )
{
bool canSet = true;
if ( raiseEvents )
{
ItemCheckEventArgs args =
new ItemCheckEventArgs(
item.Index,
ConvertStateImageIndexToCheckState(
stateImageIndex ),
ConvertStateImageIndexToCheckState(
item.StateImageIndex ) );
OnItemCheck( args );
ItemCheckTriStateEventArgs triArgs =
new ItemCheckTriStateEventArgs(
item,
action,
ConvertStateImageIndexToCheckState(
stateImageIndex ),
ConvertStateImageIndexToCheckState(
item.StateImageIndex ) );
OnItemCheckTriState( triArgs );
canSet = !triArgs.Cancel;
}
if ( canSet )
{
// Actually set.
// THIS IS THE ONLY PLACE to set.
item.StateImageIndex = stateImageIndex;
if ( raiseEvents )
{
ItemCheckedEventArgs args =
new ItemCheckedEventArgs( item );
OnItemChecked( args );
ItemCheckedTriStateEventArgs triArgs =
new ItemCheckedTriStateEventArgs(
item,
action,
item.StateImageIndex );
OnItemCheckedTriState( triArgs );
}
}
}
