/*  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)

 }