Andrey Breslav
118 lines
2.6 KiB
Plaintext
118 lines
2.6 KiB
Plaintext
package html
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import java.util.*
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trait Factory<T> {
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fun create() : T
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}
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trait Element
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class TextElement(val text : String) : Element
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abstract class Tag(val name : String) : Element {
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val children = ArrayList<Element>()
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val attributes = HashMap<String, String>()
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protected fun initTag<T : Element>(init : T.() -> Unit) : T
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where class object T : Factory<T>{
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val tag = T.create()
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tag.init()
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children.add(tag)
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return tag
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}
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}
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abstract class TagWithText(name : String) : Tag(name) {
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fun String.plus() {
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children.add(TextElement(this))
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}
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}
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class HTML() : TagWithText("html") {
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class object : Factory<HTML> {
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override fun create() = HTML()
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}
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fun head(init : Head.() -> Unit) = initTag<Head>(init)
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fun body(init : Body.() -> Unit) = initTag<Body>(init)
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}
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class Head() : TagWithText("head") {
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class object : Factory<Head> {
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override fun create() = Head()
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}
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fun title(init : Title.() -> Unit) = initTag<Title>(init)
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}
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class Title() : TagWithText("title")
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abstract class BodyTag(name : String) : TagWithText(name) {
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}
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class Body() : BodyTag("body") {
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class object : Factory<Body> {
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override fun create() = Body()
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}
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fun b(init : B.() -> Unit) = initTag<B>(init)
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fun p(init : P.() -> Unit) = initTag<P>(init)
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fun h1(init : H1.() -> Unit) = initTag<H1>(init)
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fun a(href : String, init : A.() -> Unit) {
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val a = initTag<A>(init)
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a.href = href
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}
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}
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class B() : BodyTag("b")
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class P() : BodyTag("p")
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class H1() : BodyTag("h1")
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class A() : BodyTag("a") {
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var href : String?
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get() = attributes["href"]
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set(value) {
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if (value != null)
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attributes["href"] = value
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}
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}
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fun Map<String, String>.set(key : String, value : String) = this.put(key, value)
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fun html(init : HTML.() -> Unit) : HTML {
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val html = HTML()
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html.init()
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return html
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}
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fun result(args : Array<String>) =
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html {
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head {
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title {+"XML encoding with Groovy"}
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}
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body {
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h1 {+"XML encoding with Groovy"}
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p {+"this format can be used as an alternative markup to XML"}
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// an element with attributes and text content
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a(href = "http://groovy.codehaus.org") {+"Groovy"}
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// mixed content
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p {
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+"This is some"
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b {+"mixed"}
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+"text. For more see the"
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a(href = "http://groovy.codehaus.org") {+"Groovy"}
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+"project"
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}
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p {+"some text"}
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// content generated by
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p {
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for (arg in args)
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+arg
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}
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}
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}
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