/**
* Activates an editor mode. Shuts down all other active modes which cannot run with the passed in mode.
*
* @param InID The ID of the editor mode to activate.
* @param bToggle true if the passed in editor mode should be toggled off if it is already active.
*/
void FEditorModeTools::ActivateMode( FEditorModeID InID, bool bToggle )
{
if (InID == FBuiltinEditorModes::EM_Default)
{
InID = DefaultID;
}
// Check to see if the mode is already active
if( IsModeActive(InID) )
{
// The mode is already active toggle it off if we should toggle off already active modes.
if( bToggle )
{
DeactivateMode( InID );
}
// Nothing more to do
return;
}
// Recycle a mode or factory a new one
TSharedPtr<FEdMode> Mode = RecycledModes.FindRef( InID );
if ( Mode.IsValid() )
{
RecycledModes.Remove( InID );
}
else
{
Mode = FEditorModeRegistry::Get().CreateMode( InID, *this );
}
if( !Mode.IsValid() )
{
UE_LOG(LogEditorModes, Log, TEXT("FEditorModeTools::ActivateMode : Couldn't find mode '%s'."), *InID.ToString() );
// Just return and leave the mode list unmodified
return;
}
// Remove anything that isn't compatible with this mode
for( int32 ModeIndex = Modes.Num() - 1; ModeIndex >= 0; --ModeIndex )
{
const bool bModesAreCompatible = Mode->IsCompatibleWith( Modes[ModeIndex]->GetID() ) || Modes[ModeIndex]->IsCompatibleWith( Mode->GetID() );
if ( !bModesAreCompatible )
{
DeactivateModeAtIndex(ModeIndex);
}
}
Modes.Add( Mode );
// Enter the new mode
Mode->Enter();
// Update the editor UI
FEditorSupportDelegates::UpdateUI.Broadcast();
}
FReply SLevelEditorActiveToolkit::OnToolkitCloseButtonClicked()
{
DeactivateMode();
return FReply::Handled();
}
