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Quellcode-Bibliothek
© Kompilation durch diese Firma
[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]
Datei:
html.scala
Sprache: Scala
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/* Title: Pure/Thy/html.scala
Author: Makarius
HTML presentation elements.
*/
package isabelle
object HTML
{
/* attributes */
class Attribute(val name: String, value: String)
{
def xml: XML.Attribute = name -> value
def apply(elem: XML.Elem): XML.Elem = elem + xml
}
def id(s: String): Attribute = new Attribute("id", s)
def class_(name: String): Attribute = new Attribute("class", name)
def width(w: Int): Attribute = new Attribute("width", w.toString)
def height(h: Int): Attribute = new Attribute("height", h.toString)
def size(w: Int, h: Int)(elem: XML.Elem): XML.Elem = width(w)(height(h)(elem))
/* structured markup operators */
def text(txt: String): XML.Body = if (txt.isEmpty) Nil else List(XML.Text(txt))
val break: XML.Body = List(XML.elem("br"))
val nl: XML.Body = List(XML.Text("\n"))
class Operator(val name: String)
{
def apply(body: XML.Body): XML.Elem = XML.elem(name, body)
def apply(att: Attribute, body: XML.Body): XML.Elem = att(apply(body))
def apply(c: String, body: XML.Body): XML.Elem = apply(class_(c), body)
}
class Heading(name: String) extends Operator(name)
{
def apply(txt: String): XML.Elem = super.apply(text(txt))
def apply(att: Attribute, txt: String): XML.Elem = super.apply(att, text(txt))
def apply(c: String, txt: String): XML.Elem = super.apply(c, text(txt))
}
val div = new Operator("div")
val span = new Operator("span")
val pre = new Operator("pre")
val par = new Operator("p")
val sub = new Operator("sub")
val sup = new Operator("sup")
val emph = new Operator("em")
val bold = new Operator("b")
val code = new Operator("code")
val item = new Operator("li")
val list = new Operator("ul")
val enum = new Operator("ol")
val descr = new Operator("dl")
val dt = new Operator("dt")
val dd = new Operator("dd")
val title = new Heading("title")
val chapter = new Heading("h1")
val section = new Heading("h2")
val subsection = new Heading("h3")
val subsubsection = new Heading("h4")
val paragraph = new Heading("h5")
val subparagraph = new Heading("h6")
def itemize(items: List[XML.Body]): XML.Elem = list(items.map(item(_)))
def enumerate(items: List[XML.Body]): XML.Elem = enum(items.map(item(_)))
def description(items: List[(XML.Body, XML.Body)]): XML.Elem =
descr(items.flatMap({ case (x, y) => List(dt(x), dd(y)) }))
def link(href: String, body: XML.Body): XML.Elem =
XML.Elem(Markup("a", List("href" -> href)), if (body.isEmpty) text(href) else body)
def link(path: Path, body: XML.Body): XML.Elem = link(path.implode, body)
def image(src: String, alt: String = ""): XML.Elem =
XML.Elem(Markup("img", List("src" -> src) ::: proper_string(alt).map("alt" -> _).toList), Nil)
def source(body: XML.Body): XML.Elem = pre("source", body)
def source(src: String): XML.Elem = source(text(src))
def style(s: String): XML.Elem = XML.elem("style", text(s))
def style_file(href: String): XML.Elem =
XML.Elem(Markup("link", List("rel" -> "stylesheet", "type" -> "text/css", "href" -> href)), Nil)
def style_file(path: Path): XML.Elem = style_file(Url.print_file(path.file))
def script(s: String): XML.Elem = XML.elem("script", text(s))
def script_file(href: String): XML.Elem = XML.Elem(Markup("script", List("src" -> href)), Nil)
def script_file(path: Path): XML.Elem = script_file(Url.print_file(path.file))
/* output text with control symbols */
private val control: Map[Symbol.Symbol, Operator] =
Map(
Symbol.sub -> sub, Symbol.sub_decoded -> sub,
Symbol.sup -> sup, Symbol.sup_decoded -> sup,
Symbol.bold -> bold, Symbol.bold_decoded -> bold)
private val control_block_begin: Map[Symbol.Symbol, Operator] =
Map(
Symbol.bsub -> sub, Symbol.bsub_decoded -> sub,
Symbol.bsup -> sup, Symbol.bsup_decoded -> sup)
private val control_block_end: Map[Symbol.Symbol, Operator] =
Map(
Symbol.esub -> sub, Symbol.esub_decoded -> sub,
Symbol.esup -> sup, Symbol.esup_decoded -> sup)
def is_control(sym: Symbol.Symbol): Boolean = control.isDefinedAt(sym)
def is_control_block_begin(sym: Symbol.Symbol): Boolean = control_block_begin.isDefinedAt(sym)
def is_control_block_end(sym: Symbol.Symbol): Boolean = control_block_end.isDefinedAt(sym)
def is_control_block_pair(bg: Symbol.Symbol, en: Symbol.Symbol): Boolean =
{
val bg_decoded = Symbol.decode(bg)
val en_decoded = Symbol.decode(en)
bg_decoded == Symbol.bsub_decoded && en_decoded == Symbol.esub_decoded ||
bg_decoded == Symbol.bsup_decoded && en_decoded == Symbol.esup_decoded
}
def check_control_blocks(body: XML.Body): Boolean =
{
var ok = true
var open = List.empty[Symbol.Symbol]
for { XML.Text(text) <- body; sym <- Symbol.iterator(text) } {
if (is_control_block_begin(sym)) open ::= sym
else if (is_control_block_end(sym)) {
open match {
case bg :: rest if is_control_block_pair(bg, sym) => open = rest
case _ => ok = false
}
}
}
ok && open.isEmpty
}
def output(s: StringBuilder, text: String,
control_blocks: Boolean, hidden: Boolean, permissive: Boolean)
{
def output_string(str: String): Unit =
XML.output_string(s, str, permissive = permissive)
def output_hidden(body: => Unit): Unit =
if (hidden) { s ++= "hidden\">"; body; s ++= "" }
def output_symbol(sym: Symbol.Symbol): Unit =
if (sym != "") {
control_block_begin.get(sym) match {
case Some(op) if control_blocks =>
output_hidden(output_string(sym))
XML.output_elem(s, Markup(op.name, Nil))
case _ =>
control_block_end.get(sym) match {
case Some(op) if control_blocks =>
XML.output_elem_end(s, op.name)
output_hidden(output_string(sym))
case _ =>
if (hidden && Symbol.is_control_encoded(sym)) {
output_hidden(output_string(Symbol.control_prefix))
s ++= "control\">"
output_string(Symbol.control_name(sym).get)
s ++= ""
output_hidden(output_string(Symbol.control_suffix))
}
else output_string(sym)
}
}
}
var ctrl = ""
for (sym <- Symbol.iterator(text)) {
if (is_control(sym)) { output_symbol(ctrl); ctrl = sym }
else {
control.get(ctrl) match {
case Some(op) if Symbol.is_controllable(sym) =>
output_hidden(output_symbol(ctrl))
XML.output_elem(s, Markup(op.name, Nil))
output_symbol(sym)
XML.output_elem_end(s, op.name)
case _ =>
output_symbol(ctrl)
output_symbol(sym)
}
ctrl = ""
}
}
output_symbol(ctrl)
}
def output(text: String): String =
{
val control_blocks = check_control_blocks(List(XML.Text(text)))
Library.make_string(output(_, text,
control_blocks = control_blocks, hidden = false, permissive = true))
}
/* output XML as HTML */
private val structural_elements =
Set("head", "body", "meta", "div", "pre", "p", "title", "h1", "h2", "h3", "h4", "h5", "h6",
"ul", "ol", "dl", "li", "dt", "dd")
def output(s: StringBuilder, xml: XML.Body, hidden: Boolean, structural: Boolean)
{
def output_body(body: XML.Body): Unit =
{
val control_blocks = check_control_blocks(body)
body foreach {
case XML.Elem(markup, Nil) =>
XML.output_elem(s, markup, end = true)
case XML.Elem(markup, ts) =>
if (structural && structural_elements(markup.name)) s += '\n'
XML.output_elem(s, markup)
output_body(ts)
XML.output_elem_end(s, markup.name)
if (structural && structural_elements(markup.name)) s += '\n'
case XML.Text(txt) =>
output(s, txt, control_blocks = control_blocks, hidden = hidden, permissive = true)
}
}
output_body(xml)
}
def output(body: XML.Body, hidden: Boolean, structural: Boolean): String =
Library.make_string(output(_, body, hidden, structural))
def output(tree: XML.Tree, hidden: Boolean, structural: Boolean): String =
output(List(tree), hidden, structural)
/* messages */
// background
val writeln_message: Attribute = class_("writeln_message")
val warning_message: Attribute = class_("warning_message")
val error_message: Attribute = class_("error_message")
// underline
val writeln: Attribute = class_("writeln")
val warning: Attribute = class_("warning")
val error: Attribute = class_("error")
/* tooltips */
def tooltip(item: XML.Body, tip: XML.Body): XML.Elem =
span(item ::: List(div("tooltip", tip)))
def tooltip_errors(item: XML.Body, msgs: List[XML.Body]): XML.Elem =
HTML.error(tooltip(item, msgs.map(msg => error_message(pre(msg)))))
/* GUI elements */
object GUI
{
private def optional_value(text: String): XML.Attributes =
proper_string(text).map(a => "value" -> a).toList
private def optional_name(name: String): XML.Attributes =
proper_string(name).map(a => "name" -> a).toList
private def optional_title(tooltip: String): XML.Attributes =
proper_string(tooltip).map(a => "title" -> a).toList
private def optional_submit(submit: Boolean): XML.Attributes =
if (submit) List("onChange" -> "this.form.submit()") else Nil
private def optional_checked(selected: Boolean): XML.Attributes =
if (selected) List("checked" -> "") else Nil
private def optional_action(action: String): XML.Attributes =
proper_string(action).map(a => "action" -> a).toList
private def optional_onclick(script: String): XML.Attributes =
proper_string(script).map(a => "onclick" -> a).toList
private def optional_onchange(script: String): XML.Attributes =
proper_string(script).map(a => "onchange" -> a).toList
def button(body: XML.Body, name: String = "", tooltip: String = "", submit: Boolean = false,
script: String = ""): XML.Elem =
XML.Elem(
Markup("button",
List("type" -> (if (submit) "submit" else "button"), "value" -> "true") :::
optional_name(name) ::: optional_title(tooltip) ::: optional_onclick(script)), body)
def checkbox(body: XML.Body, name: String = "", tooltip: String = "", submit: Boolean = false,
selected: Boolean = false, script: String = ""): XML.Elem =
XML.elem("label",
XML.elem(
Markup("input",
List("type" -> "checkbox", "value" -> "true") ::: optional_name(name) :::
optional_title(tooltip) ::: optional_submit(submit) :::
optional_checked(selected) ::: optional_onchange(script))) :: body)
def text_field(columns: Int = 0, text: String = "", name: String = "", tooltip: String = "",
submit: Boolean = false, script: String = ""): XML.Elem =
XML.elem(Markup("input",
List("type" -> "text") :::
(if (columns > 0) List("size" -> columns.toString) else Nil) :::
optional_value(text) ::: optional_name(name) ::: optional_title(tooltip) :::
optional_submit(submit) ::: optional_onchange(script)))
def parameter(text: String = "", name: String = ""): XML.Elem =
XML.elem(
Markup("input", List("type" -> "hidden") ::: optional_value(text) ::: optional_name(name)))
def form(body: XML.Body, name: String = "", action: String = "", http_post: Boolean = false)
: XML.Elem =
XML.Elem(
Markup("form", optional_name(name) ::: optional_action(action) :::
(if (http_post) List("method" -> "post") else Nil)), body)
}
/* GUI layout */
object Wrap_Panel
{
object Alignment extends Enumeration
{
val left, right, center = Value
}
def apply(contents: List[XML.Elem], name: String = "", action: String = "",
alignment: Alignment.Value = Alignment.right): XML.Elem =
{
val body = Library.separate(XML.Text(" "), contents)
GUI.form(List(div(body) + ("style" -> ("text-align: " + alignment))),
name = name, action = action)
}
}
/* document */
val header: String =
XML.header +
"""-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">"""
val footer: String = """ | | |
