types

type FocusManager interface {
	RegisterFocusButton(key string, btn *widget.Button)
	SetPendingFocus(key string)
	SetScrollWidgets(sc *widget.ScrollContainer, slider *widget.Slider)
	SaveScrollPosition()
	RestoreScrollPosition()
	// Zone-based navigation
	RegisterNavZone(name string, zoneType string, keys []string, columns int)
	SetNavTransition(fromZone string, direction int, toZone string, toIndex int)
}

type FocusRestorer interface {
	// GetPendingFocusButton returns the button that should receive focus after rebuild
	GetPendingFocusButton() *widget.Button
	// ClearPendingFocus clears the pending focus state
	ClearPendingFocus()
}

type ScreenCallback interface {
	SwitchToLibrary()
	SwitchToDetail(gameCRC string)
	SwitchToSettings()
	SwitchToScanProgress(rescanAll bool)
	LaunchGame(gameCRC string, resume bool)
	Exit()
	GetWindowWidth() int               // For responsive layout calculations
	RequestRebuild()                   // Request UI rebuild after state changes
	GetPlaceholderImageData() []byte   // Get raw placeholder image data (loading indicator)
	GetMissingArtImageData() []byte    // Get raw missing-art image data (no artwork found)
	GetMD5ByCRC32(crc32 uint32) string // Get MD5 hash from RDB by CRC32
	GetExtensions() []string           // Get supported ROM file extensions
	ShowNotification(msg string)       // Show a brief notification message
}