Initial commit with some working code and basic example.

2020-03-21 13:04:54 +05:00 · 2020-03-21 13:04:54 +05:00 · 490c5e5cc5
commit 490c5e5cc5
21 changed files with 919 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,2 @@
+.idea
+*DS_Store*
--- a/.golangci.yml
+++ b/.golangci.yml
@ -0,0 +1,24 @@
+run:
+  deadline: 5m
+linters:
+  enable-all: true
+  disable:
+    # Because globals might exist, but according to our codestyle they
+    # should be lowercased and considered as unexported.
+    - gochecknoglobals
+    # While it might be useful it'll create more problems that will solve.
+    - gocritic
+    # This linter goes crazy for nothing (almost).
+    - funlen
+    # Code duplications checks are good, but not for right now. This linter
+    # should be enabled later, when 1.0.0 will be released.
+    - dupl
+    # Magic numbers everywhere.
+    - gomnd
+linters-settings:
+  lll:
+    line-length: 420
+  gocyclo:
+    min-complexity: 40
+  gocognit:
+    min-complexity: 50
--- a/README.md
+++ b/README.md
@ -0,0 +1,12 @@
+# BulpherJS
+
+[bulma](https://bulma.io) for GopherJS.
+
+## Installation
+
+TBW
+
+## Usage
+
+TBW
+
--- a/common/const.go
+++ b/common/const.go
@ -0,0 +1,37 @@
+package common
+
+const (
+	HTMLElementA        = "a"
+	HTMLElementBody     = "body"
+	HTMLElementButton   = "button"
+	HTMLElementDiv      = "div"
+	HTMLElementDocument = "document"
+	HTMLElementHead     = "head"
+	HTMLElementLink     = "link"
+	HTMLElementMeta     = "meta"
+	HTMLElementNav      = "nav"
+	HTMLElementP        = "p"
+	HTMLElementSection  = "section"
+
+	HTMLElementParameterClassList = "classList"
+	HTMLElementParameterHref      = "href"
+	HTMLElementParameterID        = "id"
+	HTMLElementParameterRel       = "rel"
+	HTMLElementParameterRole      = "role"
+
+	HTMLMetaParameterCharset = "charset"
+	HTMLMetaParameterContent = "content"
+	HTMLMetaParameterName    = "name"
+
+	HTMLHeadElementTitle = "title"
+
+	JSCallAdd              = "add"
+	JSCallAddEventListener = "addEventListener"
+	JSCallAppendChild      = "appendChild"
+	JSCallCreateElement    = "createElement"
+	JSCallQuerySelector    = "querySelector"
+
+	JSConsole = "console"
+
+	JSEventDOMContentLoaded = "DOMContentLoaded"
+)
--- a/common/log.go
+++ b/common/log.go
@ -0,0 +1,10 @@
+package common
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+)
+
+// Log logs everything passed to Javascript console.
+func Log(args ...interface{}) {
+	js.Global.Get(JSConsole).Call("log", args...)
+}
--- a/elements/a.go
+++ b/elements/a.go
@ -0,0 +1,67 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/metas"
+)
+
+// AOptions is an "a" HTML element configuration structure.
+type AOptions struct {
+	Class string
+	Href  string
+	ID    string
+	Text  string
+}
+
+// A is a controlling structure that describes everything for "a" HTML
+// element.
+type A struct {
+	metas.Generic
+	options *AOptions
+}
+
+// NewA creates new "a" element controlling structure.
+func NewA(opts *AOptions) *A {
+	a := &A{}
+	a.initialize(opts)
+
+	return a
+}
+
+// Build builds element and calls Build() for all child elements.
+func (a *A) Build() *js.Object {
+	a.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementA)
+
+	if a.options == nil {
+		return a.Object
+	}
+
+	if a.options.Class != "" {
+		a.AddClassesFromString(a.options.Class)
+	}
+
+	if a.options.Href != "" {
+		a.Object.Set(common.HTMLElementParameterHref, a.options.Href)
+	}
+
+	if a.options.ID != "" {
+		a.Object.Set(common.HTMLElementParameterID, a.options.ID)
+	}
+
+	if a.options.Text != "" {
+		a.Object.Set("textContent", a.options.Text)
+	}
+
+	a.BuildChilds(a.Object)
+
+	return a.Object
+}
+
+// Initializes controlling structure with necessary parameters.
+func (a *A) initialize(opts *AOptions) {
+	a.options = opts
+
+	a.InitializeGeneric()
+}
--- a/elements/button.go
+++ b/elements/button.go
@ -0,0 +1,67 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/metas"
+)
+
+// ButtonOptions is a "button" HTML element configuration structure.
+type ButtonOptions struct {
+	Class          string
+	ID             string
+	OnClickHandler func(e *js.Object)
+	Text           string
+}
+
+// Button is a controlling structure for "button" HTML element.
+type Button struct {
+	metas.Generic
+
+	options *ButtonOptions
+}
+
+// NewButton creates new "button" HTML element controlling structure.
+func NewButton(buttonOptions *ButtonOptions) *Button {
+	b := &Button{}
+	b.initialize(buttonOptions)
+
+	return b
+}
+
+// Build builds element and calls Build() for all child elements.
+func (b *Button) Build() *js.Object {
+	b.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementButton)
+
+	if b.options == nil {
+		return b.Object
+	}
+
+	if b.options.Class != "" {
+		b.AddClassesFromString(b.options.Class)
+	}
+
+	if b.options.ID != "" {
+		b.Object.Set("id", b.options.ID)
+	}
+
+	if b.options.Text != "" {
+		b.Object.Set("textContent", b.options.Text)
+	}
+
+	if b.options.OnClickHandler != nil {
+		b.Object.Set("onclick", b.options.OnClickHandler)
+	}
+
+	b.BuildChilds(b.Object)
+
+	return b.Object
+}
+
+// Initializes controlling structure with necessary parameters.
+func (b *Button) initialize(buttonOptions *ButtonOptions) {
+	b.options = buttonOptions
+
+	b.InitializeGeneric()
+}
--- a/elements/div.go
+++ b/elements/div.go
@ -0,0 +1,56 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/metas"
+)
+
+// DivOptions is a "div" HTML element configuration structure.
+type DivOptions struct {
+	Class string
+	ID    string
+}
+
+// Div is a controlling structure for "div" HTML element.
+type Div struct {
+	metas.Generic
+	options *DivOptions
+}
+
+// NewDiv creates new "div" HTML element controlling structure.
+func NewDiv(divOptions *DivOptions) *Div {
+	d := &Div{}
+	d.initialize(divOptions)
+
+	return d
+}
+
+// Build builds element and calls Build() for all child elements.
+func (d *Div) Build() *js.Object {
+	d.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementDiv)
+
+	if d.options == nil {
+		return d.Object
+	}
+
+	if d.options.Class != "" {
+		d.AddClassesFromString(d.options.Class)
+	}
+
+	if d.options.ID != "" {
+		d.Object.Set(common.HTMLElementParameterID, d.options.ID)
+	}
+
+	d.BuildChilds(d.Object)
+
+	return d.Object
+}
+
+// Initializes controlling structure with necessary parameters.
+func (d *Div) initialize(divOptions *DivOptions) {
+	d.options = divOptions
+
+	d.InitializeGeneric()
+}
--- a/elements/link.go
+++ b/elements/link.go
@ -0,0 +1,51 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+)
+
+// LinkOptions is a "link" HTML head element configuration structure.
+type LinkOptions struct {
+	Href string
+	ID   string
+	Rel  string
+}
+
+// Link is a controlling structure for "link" HTML head element.
+type Link struct {
+	options *LinkOptions
+}
+
+// NewLink creates new "link" HTML head controlling structure.
+func NewLink(linkOptions *LinkOptions) *Link {
+	l := &Link{}
+	l.initialize(linkOptions)
+
+	return l
+}
+
+// Build builds element.
+func (l *Link) Build() *js.Object {
+	link := js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementLink)
+
+	if l.options == nil {
+		return link
+	}
+
+	if l.options.Href != "" {
+		link.Set(common.HTMLElementParameterHref, l.options.Href)
+	}
+
+	if l.options.Rel != "" {
+		link.Set(common.HTMLElementParameterRel, l.options.Rel)
+	}
+
+	return link
+}
+
+// Initializes controlling structure with necessary parameters.
+func (l *Link) initialize(linkOptions *LinkOptions) {
+	l.options = linkOptions
+}
--- a/elements/meta.go
+++ b/elements/meta.go
@ -0,0 +1,55 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+)
+
+// MetaOptions is a "meta" HTML head element configuration structure.
+type MetaOptions struct {
+	Charset string
+	Content string
+	Name    string
+}
+
+// Meta is a controlling structure for "meta" HTML head element.
+type Meta struct {
+	options *MetaOptions
+}
+
+// NewMeta creates "meta" HTML head controlling structure.
+func NewMeta(metaOptions *MetaOptions) *Meta {
+	m := &Meta{}
+	m.initialize(metaOptions)
+
+	return m
+}
+
+// Build builds element.
+func (m *Meta) Build() *js.Object {
+	meta := js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementMeta)
+
+	if m.options == nil {
+		return meta
+	}
+
+	if m.options.Charset != "" {
+		meta.Set(common.HTMLMetaParameterCharset, m.options.Charset)
+	}
+
+	if m.options.Content != "" {
+		meta.Set(common.HTMLMetaParameterContent, m.options.Content)
+	}
+
+	if m.options.Name != "" {
+		meta.Set(common.HTMLMetaParameterName, m.options.Name)
+	}
+
+	return meta
+}
+
+// Initializes controlling structure with necessary parameters.
+func (m *Meta) initialize(metaOptions *MetaOptions) {
+	m.options = metaOptions
+}
--- a/elements/nav.go
+++ b/elements/nav.go
@ -0,0 +1,63 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/metas"
+)
+
+// NavOptions is a "nav" HTML element configuration structure.
+type NavOptions struct {
+	Class string
+	Data  map[string]string
+	Role  string
+}
+
+// Nav is a controlling structure for "nav" HTML element.
+type Nav struct {
+	metas.Generic
+	options *NavOptions
+}
+
+// NewNav creates new "nav" HTML element controlling structure.
+func NewNav(navOptions *NavOptions) *Nav {
+	n := &Nav{}
+	n.initialize(navOptions)
+
+	return n
+}
+
+// Build builds element and calls Build() for all child elements.
+func (n *Nav) Build() *js.Object {
+	n.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementNav)
+
+	if n.options == nil {
+		return n.Object
+	}
+
+	if n.options.Class != "" {
+		n.AddClassesFromString(n.options.Class)
+	}
+
+	if n.options.Role != "" {
+		n.Object.Set(common.HTMLElementParameterRole, n.options.Role)
+	}
+
+	if n.options.Data != nil {
+		for k, v := range n.options.Data {
+			n.Object.Set(k, v)
+		}
+	}
+
+	n.BuildChilds(n.Object)
+
+	return n.Object
+}
+
+// Initializes controlling structure with necessary parameters.
+func (n *Nav) initialize(navOptions *NavOptions) {
+	n.options = navOptions
+
+	n.InitializeGeneric()
+}
--- a/elements/p.go
+++ b/elements/p.go
@ -0,0 +1,61 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/metas"
+)
+
+// POptions is a "p" HTML element configuration structure.
+type POptions struct {
+	Class string
+	ID    string
+	Text  string
+}
+
+// P is a controlling structure for "p" HTML element.
+type P struct {
+	metas.Generic
+	options *POptions
+}
+
+// NewP creates new "p" HTML element controlling structure.
+func NewP(opts *POptions) *P {
+	p := &P{}
+	p.initialize(opts)
+
+	return p
+}
+
+// Build builds element and calls Build() for all child elements.
+func (p *P) Build() *js.Object {
+	p.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementP)
+
+	if p.options == nil {
+		return p.Object
+	}
+
+	if p.options.Class != "" {
+		p.AddClassesFromString(p.options.Class)
+	}
+
+	if p.options.ID != "" {
+		p.Object.Set(common.HTMLElementParameterID, p.options.ID)
+	}
+
+	if p.options.Text != "" {
+		p.Object.Set("textContent", p.options.Text)
+	}
+
+	p.BuildChilds(p.Object)
+
+	return p.Object
+}
+
+// Initializes controlling structure with necessary parameters.
+func (p *P) initialize(opts *POptions) {
+	p.options = opts
+
+	p.InitializeGeneric()
+}
--- a/elements/section.go
+++ b/elements/section.go
@ -0,0 +1,48 @@
+package elements
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/metas"
+)
+
+// SectionOptions is a "section" HTML element configuration structure.
+type SectionOptions struct {
+	Class string
+}
+
+// Section is a controlling structure for "section" HTML element.
+type Section struct {
+	metas.Generic
+
+	options *SectionOptions
+}
+
+// NewSection creates new "section" HTML element controlling structure.
+func NewSection(sectionOptions *SectionOptions) *Section {
+	s := &Section{}
+	s.initialize(sectionOptions)
+
+	return s
+}
+
+// Build builds element and calls Build() for all child elements.
+func (s *Section) Build() *js.Object {
+	s.Object = js.Global.Get(common.HTMLElementDocument).Call(common.JSCallCreateElement, common.HTMLElementSection)
+
+	if s.options.Class != "" {
+		s.AddClassesFromString(s.options.Class)
+	}
+
+	s.BuildChilds(s.Object)
+
+	return s.Object
+}
+
+// Initializes controlling structure with necessary parameters.
+func (s *Section) initialize(sectionOptions *SectionOptions) {
+	s.options = sectionOptions
+
+	s.InitializeGeneric()
+}
--- a/examples/helloworld/Makefile
+++ b/examples/helloworld/Makefile
@ -0,0 +1,29 @@
+GO := $(shell which go)
+GO112_VERSION := 1.12.16
+GO112 := go${GO112_VERSION}
+
+GOPHERJS := $(shell which gopherjs 2> /dev/null)
+
+## start-web       : Starts GopherJS serving.
+start-web:
+	GOPHERJS_GOROOT="${HOME}/sdk/${GO112}" ${GOPHERJS} serve . -v
+
+## prepare         : Installs Go 1.12 and GopherJS. Go must be already installed.
+prepare: prepare-go prepare-gopherjs
+
+## prepare-go      : Prepares specific Go tooling for GopherJS. Go must be already installed.
+prepare-go:
+	@echo "* Getting Go 1.12.16 (required by gopherjs)"
+	@${GO} get golang.org/dl/${GO112}
+	@${GO112} download
+
+## prepare-gopherjs: Prepares GopherJS (e.g. compiles it).
+prepare-gopherjs:
+	@echo "* Getting gopherjs..."
+	@${GO112} get -u -v github.com/gopherjs/gopherjs
+
+help : Makefile
+	@echo "helloworld Makefile available subcommands:\n"
+	@sed -n 's/^## //p' $<
+
+.DEFAULT_GOAL := help
--- a/examples/helloworld/README.md
+++ b/examples/helloworld/README.md
@ -0,0 +1,13 @@
+# BulpherJS Hello World
+
+This directory contains "hello world" example application with example Makefile. Feel free to use it in your applications.
+
+To start issue this command:
+
+```shell
+make start-web
+```
+
+And open http://localhost:8080.
+
+Makefile is self-documentational with default goal to show help. Issue ``make`` to get list of available targets.
--- a/examples/helloworld/main.go
+++ b/examples/helloworld/main.go
@ -0,0 +1,73 @@
+package main
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+	"go.dev.pztrn.name/bulpherjs/elements"
+)
+
+func main() {
+	document := js.Global.Get("document")
+	document.Call("addEventListener", "DOMContentLoaded", func(event *js.Object) {
+		js.Global.Get("console").Call("log", "Hello world!")
+
+		constructHeader()
+		constructBody()
+	})
+}
+
+func constructBody() {
+	mainSection := elements.NewSection(&elements.SectionOptions{Class: "section"})
+
+	mainDiv := elements.NewDiv(&elements.DivOptions{
+		Class: "container",
+		ID:    "mainContainer",
+	})
+	mainSection.AddChild(mainDiv)
+
+	// Columns divs.
+	columnsDiv := elements.NewDiv(&elements.DivOptions{
+		Class: "columns",
+		ID:    "mainColumns",
+	})
+	mainDiv.AddChild(columnsDiv)
+
+	// Click-Me button should be in the middle of screen.
+	centerDiv := elements.NewDiv(&elements.DivOptions{
+		Class: "column is-half is-offset-two-fifths",
+	})
+	columnsDiv.AddChild(centerDiv)
+
+	startTestButton := elements.NewButton(&elements.ButtonOptions{
+		Class: "button is-large is-rounded is-primary",
+		Text:  "Click Me!",
+		OnClickHandler: func(e *js.Object) {
+			common.Log("Button clicked! Hooray")
+		},
+	})
+	centerDiv.AddChild(startTestButton)
+
+	js.Global.Get(common.HTMLElementDocument).
+		Get(common.HTMLElementBody).
+		Call(common.JSCallAppendChild, mainSection.Build())
+}
+
+func constructHeader() {
+	link := elements.NewLink(&elements.LinkOptions{
+		Href: "//cdn.jsdelivr.net/npm/bulma@0.8.0/css/bulma.min.css",
+		ID:   "",
+		Rel:  "stylesheet",
+	})
+
+	js.Global.Get(common.HTMLElementDocument).Get(common.HTMLElementHead).Call(common.JSCallAppendChild, link.Build())
+
+	metaViewport := elements.NewMeta(&elements.MetaOptions{
+		Content: "width=device-width, initial-scale=1",
+		Name:    "viewport",
+	})
+
+	js.Global.Get(common.HTMLElementDocument).Get(common.HTMLElementHead).Call(common.JSCallAppendChild, metaViewport.Build())
+
+	js.Global.Get(common.HTMLElementDocument).Set(common.HTMLHeadElementTitle, "BulpherJS Hello World application")
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,16 @@
+module go.dev.pztrn.name/bulpherjs
+
+go 1.13
+
+require (
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/gopherjs/gopherjs v0.0.0-20200217142428-fce0ec30dd00
+	github.com/neelance/astrewrite v0.0.0-20160511093645-99348263ae86 // indirect
+	github.com/neelance/sourcemap v0.0.0-20200213170602-2833bce08e4c // indirect
+	github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 // indirect
+	github.com/spf13/cobra v0.0.6 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/crypto v0.0.0-20200320181102-891825fb96df // indirect
+	golang.org/x/sys v0.0.0-20200320181252-af34d8274f85 // indirect
+	golang.org/x/tools v0.0.0-20200319210407-521f4a0cd458 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,159 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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--- a/metas/buildable.go
+++ b/metas/buildable.go
@ -0,0 +1,9 @@
+package metas
+
+import "github.com/gopherjs/gopherjs/js"
+
+// Buildable is an interface which is used internally to ensure
+// that item is buildable. Used mostly for child items.
+type Buildable interface {
+	Build() *js.Object
+}
--- a/metas/generic.go
+++ b/metas/generic.go
@ -0,0 +1,35 @@
+package metas
+
+import (
+	"strings"
+
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+)
+
+// Generic is a structure embedded into other structures and provides
+// some generic things like working with classes, IDs and others.
+// Also this is the struct that holds real object.
+type Generic struct {
+	Buildable
+	InnerItems
+	Object *js.Object
+}
+
+// AddClassesFromString adds classes to object from string. Classes
+// should be specified like "class1 class2 ... classN".
+func (g *Generic) AddClassesFromString(classes string) {
+	classesSplitted := strings.Split(classes, " ")
+
+	for _, class := range classesSplitted {
+		g.Object.Get(common.HTMLElementParameterClassList).Call(common.JSCallAdd, class)
+	}
+}
+
+// InitializeGeneric initializes itself and all embedded things. This
+// function SHOULD NOT be called manually by end-user, it should be
+// called only for elements.
+func (g *Generic) InitializeGeneric() {
+	g.initializeInnerItems()
+}
--- a/metas/inner.go
+++ b/metas/inner.go
@ -0,0 +1,32 @@
+package metas
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+
+	"go.dev.pztrn.name/bulpherjs/common"
+)
+
+// InnerItems is a meta structure that should be embedded in all other
+// structures (notably element controlling ones). It provide ability to
+// add child elements.
+type InnerItems struct {
+	innerItems []Buildable
+}
+
+// AddChild adds child to element.
+func (it *InnerItems) AddChild(object Buildable) {
+	it.innerItems = append(it.innerItems, object)
+}
+
+// BuildChilds build child elements and adds them to parent.
+func (it *InnerItems) BuildChilds(parent *js.Object) {
+	for _, item := range it.innerItems {
+		itemObj := item.Build()
+		parent.Call(common.JSCallAppendChild, itemObj)
+	}
+}
+
+// Initializes child elements storage.
+func (it *InnerItems) initializeInnerItems() {
+	it.innerItems = make([]Buildable, 0)
+}