/*  Title:      Tools/jEdit/src/isabelle_markup.scala

    Author:     Makarius

Isabelle specific physical rendering and markup selection.

*/

package isabelle.jedit

import isabelle._

import java.awt.Color

import org.lobobrowser.util.gui.ColorFactory

import org.gjt.sp.jedit.syntax.{Token => JEditToken}

object Isabelle_Markup

{

  /* physical rendering */

  // see http://www.w3schools.com/css/css_colornames.asp

  def get_color(s: String): Color = ColorFactory.getInstance.getColor(s)

  val outdated_color = new Color(238, 227, 227)

  val unfinished_color = new Color(255, 228, 225)

  val light_color = new Color(240, 240, 240)

  val regular_color = new Color(192, 192, 192)

  val warning_color = new Color(255, 140, 0)

  val error_color = new Color(178, 34, 34)

  val bad_color = new Color(255, 106, 106, 100)

  val hilite_color = new Color(255, 204, 102, 100)

  val quoted_color = new Color(139, 139, 139, 25)

  val subexp_color = new Color(80, 80, 80, 50)

  val keyword1_color = get_color("#006699")

  val keyword2_color = get_color("#009966")

  class Icon(val priority: Int, val icon: javax.swing.Icon)

  {

    def >= (that: Icon): Boolean = this.priority >= that.priority

  }

  val warning_icon = new Icon(1, Isabelle.load_icon("16x16/status/dialog-information.png"))

  val legacy_icon = new Icon(2, Isabelle.load_icon("16x16/status/dialog-warning.png"))

  val error_icon = new Icon(3, Isabelle.load_icon("16x16/status/dialog-error.png"))

  /* command status */

  def status_color(snapshot: Document.Snapshot, command: Command): Option[Color] =

  {

    val state = snapshot.state(command)

    if (snapshot.is_outdated) Some(outdated_color)

    else

      Isar_Document.command_status(state.status) match {

        case Isar_Document.Forked(i) if i > 0 => Some(unfinished_color)

        case Isar_Document.Unprocessed => Some(unfinished_color)

        case _ => None

      }

  }

  def overview_color(snapshot: Document.Snapshot, command: Command): Option[Color] =

  {

    val state = snapshot.state(command)

    if (snapshot.is_outdated) None

    else

      Isar_Document.command_status(state.status) match {

        case Isar_Document.Forked(i) => if (i > 0) Some(unfinished_color) else None

        case Isar_Document.Unprocessed => Some(unfinished_color)

        case Isar_Document.Failed => Some(error_color)

        case Isar_Document.Finished =>

          if (state.results.exists(r => Isar_Document.is_error(r._2))) Some(error_color)

          else if (state.results.exists(r => Isar_Document.is_warning(r._2))) Some(warning_color)

          else None

      }

  }

  /* markup selectors */

  val message: Markup_Tree.Select[Color] =

  {

    case Text.Info(_, XML.Elem(Markup(Markup.WRITELN, _), _)) => regular_color

    case Text.Info(_, XML.Elem(Markup(Markup.WARNING, _), _)) => warning_color

    case Text.Info(_, XML.Elem(Markup(Markup.ERROR, _), _)) => error_color

  }

  val popup: Markup_Tree.Select[String] =

  {

    case Text.Info(_, msg @ XML.Elem(Markup(markup, _), _))

    if markup == Markup.WRITELN || markup == Markup.WARNING || markup == Markup.ERROR =>

      Pretty.string_of(List(msg), margin = Isabelle.Int_Property("tooltip-margin"))

  }

  val gutter_message: Markup_Tree.Select[Icon] =

  {

    case Text.Info(_, XML.Elem(Markup(Markup.WARNING, _), body)) =>

      body match {

        case List(XML.Elem(Markup(Markup.LEGACY, _), _)) => legacy_icon

        case _ => warning_icon

      }

    case Text.Info(_, XML.Elem(Markup(Markup.ERROR, _), _)) => error_icon

  }

  val background1: Markup_Tree.Select[Color] =

  {

    case Text.Info(_, XML.Elem(Markup(Markup.BAD, _), _)) => bad_color

    case Text.Info(_, XML.Elem(Markup(Markup.HILITE, _), _)) => hilite_color

  }

  val background2: Markup_Tree.Select[Color] =

  {

    case Text.Info(_, XML.Elem(Markup(Markup.TOKEN_RANGE, _), _)) => light_color

  }

  val foreground: Markup_Tree.Select[Color] =

  {

    case Text.Info(_, XML.Elem(Markup(Markup.STRING, _), _)) => quoted_color

    case Text.Info(_, XML.Elem(Markup(Markup.ALTSTRING, _), _)) => quoted_color

    case Text.Info(_, XML.Elem(Markup(Markup.VERBATIM, _), _)) => quoted_color

  }

  private val text_entity_colors: Map[String, Color] =

    Map(

      Markup.CLASS -> get_color("red"),

      Markup.TYPE -> get_color("black"),

      Markup.CONSTANT -> get_color("black"))

  private val text_colors: Map[String, Color] =

    Map(

      Markup.STRING -> get_color("black"),

      Markup.ALTSTRING -> get_color("black"),

      Markup.VERBATIM -> get_color("black"),

      Markup.LITERAL -> keyword1_color,

      Markup.DELIMITER -> get_color("black"),

      Markup.IDENT -> get_color("black"),

      Markup.TFREE -> get_color("#A020F0"),

      Markup.TVAR -> get_color("#A020F0"),

      Markup.FREE -> get_color("blue"),

      Markup.SKOLEM -> get_color("#D2691E"),

      Markup.BOUND -> get_color("green"),

      Markup.VAR -> get_color("#00009B"),

      Markup.INNER_STRING -> get_color("#D2691E"),

      Markup.INNER_COMMENT -> get_color("#8B0000"),

      Markup.DYNAMIC_FACT -> get_color("yellowgreen"),

      Markup.ML_KEYWORD -> keyword1_color,

      Markup.ML_DELIMITER -> get_color("black"),

      Markup.ML_NUMERAL -> get_color("red"),

      Markup.ML_CHAR -> get_color("#D2691E"),

      Markup.ML_STRING -> get_color("#D2691E"),

      Markup.ML_COMMENT -> get_color("#8B0000"),

      Markup.ML_MALFORMED -> get_color("#FF6A6A"),

      Markup.ANTIQ -> get_color("blue"))

  val text_color: Markup_Tree.Select[Color] =

  {

    case Text.Info(_, XML.Elem(Markup.Entity(kind, _), _))

    if text_entity_colors.isDefinedAt(kind) => text_entity_colors(kind)

    case Text.Info(_, XML.Elem(Markup(m, _), _))

    if text_colors.isDefinedAt(m) => text_colors(m)

  }

  private val tooltips: Map[String, String] =

    Map(

      Markup.SORT -> "sort",

      Markup.TYP -> "type",

      Markup.TERM -> "term",

      Markup.PROP -> "proposition",

      Markup.TOKEN_RANGE -> "inner syntax token",

      Markup.FREE -> "free variable (globally fixed)",

      Markup.SKOLEM -> "skolem variable (locally fixed)",

      Markup.BOUND -> "bound variable (internally fixed)",

      Markup.VAR -> "schematic variable",

      Markup.TFREE -> "free type variable",

      Markup.TVAR -> "schematic type variable",

      Markup.ML_SOURCE -> "ML source",

      Markup.DOC_SOURCE -> "document source")

  val tooltip: Markup_Tree.Select[String] =

  {

    case Text.Info(_, XML.Elem(Markup.Entity(kind, name), _)) => kind + " " + quote(name)

    case Text.Info(_, XML.Elem(Markup(Markup.ML_TYPING, _), body)) =>

      Pretty.string_of(List(Pretty.block(XML.Text("ML:") :: Pretty.Break(1) :: body)),

        margin = Isabelle.Int_Property("tooltip-margin"))

    case Text.Info(_, XML.Elem(Markup(name, _), _))

    if tooltips.isDefinedAt(name) => tooltips(name)

  }

  private val subexp_include =

    Set(Markup.SORT, Markup.TYP, Markup.TERM, Markup.PROP, Markup.ML_TYPING, Markup.TOKEN_RANGE,

      Markup.ENTITY, Markup.FREE, Markup.SKOLEM, Markup.BOUND, Markup.VAR,

      Markup.TFREE, Markup.TVAR, Markup.ML_SOURCE, Markup.DOC_SOURCE)

  val subexp: Markup_Tree.Select[(Text.Range, Color)] =

  {

    case Text.Info(range, XML.Elem(Markup(name, _), _)) if subexp_include(name) =>

      (range, subexp_color)

  }

  /* token markup -- text styles */

  private val command_style: Map[String, Byte] =

  {

    import JEditToken._

    Map[String, Byte](

      Keyword.THY_END -> KEYWORD2,

      Keyword.THY_SCRIPT -> LABEL,

      Keyword.PRF_SCRIPT -> LABEL,

      Keyword.PRF_ASM -> KEYWORD3,

      Keyword.PRF_ASM_GOAL -> KEYWORD3

    ).withDefaultValue(KEYWORD1)

  }

  private val token_style: Map[Token.Kind.Value, Byte] =

  {

    import JEditToken._

    Map[Token.Kind.Value, Byte](

      Token.Kind.KEYWORD -> KEYWORD2,

      Token.Kind.IDENT -> NULL,

      Token.Kind.LONG_IDENT -> NULL,

      Token.Kind.SYM_IDENT -> NULL,

      Token.Kind.VAR -> NULL,

      Token.Kind.TYPE_IDENT -> NULL,

      Token.Kind.TYPE_VAR -> NULL,

      Token.Kind.NAT -> NULL,

      Token.Kind.FLOAT -> NULL,

      Token.Kind.STRING -> LITERAL1,

      Token.Kind.ALT_STRING -> LITERAL2,

      Token.Kind.VERBATIM -> COMMENT3,

      Token.Kind.SPACE -> NULL,

      Token.Kind.COMMENT -> COMMENT1,

      Token.Kind.UNPARSED -> INVALID

    ).withDefaultValue(NULL)

  }

  def token_markup(syntax: Outer_Syntax, token: Token): Byte =

    if (token.is_command) command_style(syntax.keyword_kind(token.content).getOrElse(""))

    else if (token.is_operator) JEditToken.OPERATOR

    else token_style(token.kind)

}