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package ui
type (
ClickHandler = func(int, int)
HoverHandler = func(bool, int, int)
ScrollHandler = func(int, int)
UpdateHandler = func() error
FocusHandler = func(bool)
)
type EventHandlers interface {
IsClickable() bool
Click(int, int)
IsHoverable() bool
Hover(bool, int, int)
IsScrollable() bool
Scroll(int, int)
IsUpdatable() bool
Update() error
IsFocusable() bool
Focus(bool)
}
// TODO: cache events (in a bitmask)
type EventHandlersMap map[string]any
func NewEventHandlersMap() EventHandlersMap {
return make(EventHandlersMap)
}
func (m EventHandlersMap) RegisterHandler(ev string, handler any) {
// TODO: sanitize input
m[ev] = handler
}
func (m EventHandlersMap) IsClickable() bool {
_, found := m["click"]
return found
}
func (m EventHandlersMap) Click(x, y int) {
onclick := m["click"]
onclick.(ClickHandler)(x, y)
}
func (m EventHandlersMap) IsHoverable() bool {
_, found := m["hover"]
return found
}
func (m EventHandlersMap) Hover(start bool, x, y int) {
onhover := m["hover"]
onhover.(HoverHandler)(start, x, y)
}
func (m EventHandlersMap) IsScrollable() bool {
_, found := m["update"]
return found
}
func (m EventHandlersMap) Scroll(x, y int) {
onscroll := m["scroll"]
onscroll.(ScrollHandler)(x, y)
}
func (m EventHandlersMap) IsUpdatable() bool {
_, found := m["update"]
return found
}
func (m EventHandlersMap) Update() error {
onupdate := m["update"]
return onupdate.(UpdateHandler)()
}
func (m EventHandlersMap) IsFocusable() bool {
_, found := m["focus"]
return found
}
func (m EventHandlersMap) Focus(focus bool) {
onfocus := m["focus"]
onfocus.(FocusHandler)(focus)
}
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