82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
package elements
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import (
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"strings"
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"github.com/gopherjs/gopherjs/js"
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"go.dev.pztrn.name/bulpherjs/common"
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"go.dev.pztrn.name/bulpherjs/metas"
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)
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const (
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buttonDefaultClass = "button"
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)
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// ButtonOptions is a "button" HTML element configuration structure.
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type ButtonOptions struct {
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Class string
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ID string
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OnClickHandler func(e *js.Object)
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Text string
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}
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// Button is a controlling structure for "button" HTML element.
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type Button struct {
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metas.Generic
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options *ButtonOptions
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}
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// NewButton creates new "button" HTML element controlling structure.
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func NewButton(buttonOptions *ButtonOptions) *Button {
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b := &Button{}
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b.initialize(buttonOptions)
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return b
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}
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// Build builds element and calls Build() for all child elements.
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func (b *Button) Build() *js.Object {
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b.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementButton)
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if b.options == nil {
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b.AddClassesFromString(buttonDefaultClass)
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b.BuildChilds(b.Object)
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return b.Object
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}
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// Button should always have "button" class.
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if !strings.Contains(b.options.Class, "button") {
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b.options.Class += " button"
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}
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if b.options.Class != "" {
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b.AddClassesFromString(b.options.Class)
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}
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if b.options.ID != "" {
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b.Object.Set("id", b.options.ID)
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}
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if b.options.Text != "" {
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b.Object.Set("textContent", b.options.Text)
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}
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if b.options.OnClickHandler != nil {
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b.Object.Set("onclick", b.options.OnClickHandler)
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}
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b.BuildChilds(b.Object)
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return b.Object
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}
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// Initializes controlling structure with necessary parameters.
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func (b *Button) initialize(buttonOptions *ButtonOptions) {
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b.options = buttonOptions
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b.InitializeGeneric()
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}
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