ultraviolet/component_web_button.go

//go:build js && wasm

package ultraviolet

import (
	"fmt"
	"syscall/js"
)

type ButtonComponentWeb struct {
	node    js.Value
	view    View
	format  string
	values  []Value
	handler ClickHandler
}

func NewButtonComponentWeb(view View) *ButtonComponentWeb {
	return &ButtonComponentWeb{
		view:   view,
		values: []Value{},
	}
}

// Component

func (this *ButtonComponentWeb) Build(parent Component) {
	values := []any{}
	for _, text := range this.values {
		if text.Value() == nil {
			values = append(values, "")
		} else {
			values = append(values, text.Value().(string))
		}
	}

	this.node = WebBuildDiv(
		this.node,
		parent,
		this.view,
		"",
		fmt.Sprintf(
			this.format,
			values...,
		),
		AbstractHandlers{
			HANDLER_CLICK: func(args ...any) error {
				if this.handler == nil {
					return nil
				}

				this.handler()
				return nil
			},
		},
	)
}

func (this *ButtonComponentWeb) Invalidate() bool {
	for _, value := range this.values {
		if !value.Invalidate() {
			continue
		}

		return true
	}

	return false
}

func (this *ButtonComponentWeb) Clean() {
	WebCleanChildren(this.node)
}

// JS

func (this *ButtonComponentWeb) Node() js.Value {
	return this.node
}

// ComponentButton

func (this *ButtonComponentWeb) SetValue(format string, values []Value) {
	this.format = format
	this.values = values
}

func (this *ButtonComponentWeb) SetHandler(handler ClickHandler) {
	this.handler = handler
}