38 lines
780 B
Go
38 lines
780 B
Go
package ui
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import "opslag.de/schobers/zntg"
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type EventFn func(Context)
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type EventStateFn func(Context, interface{})
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type EventArgs struct {
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Context Context
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State interface{}
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}
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type Events struct {
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zntg.Events
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}
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type EventHandler interface {
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AddHandler(EventStateFn) uint
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AddHandlerEmpty(EventFn) uint
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RemoveHandler(uint)
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}
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func (e *Events) Notify(ctx Context, state interface{}) bool {
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return e.Events.Notify(EventArgs{Context: ctx, State: state})
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}
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func (e *Events) AddHandler(handler EventStateFn) uint {
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return e.Events.AddHandler(func(state interface{}) {
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args := state.(EventArgs)
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handler(args.Context, args.State)
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})
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}
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func (e *Events) AddHandlerEmpty(handler EventFn) uint {
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return e.AddHandler(func(ctx Context, _ interface{}) { handler(ctx) })
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}
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