src/Tools/jEdit/src/rendering.scala
author wenzelm
Tue Feb 25 20:15:47 2014 +0100 (2014-02-25)
changeset 55747 bef19c929ba5
parent 55746 97f390fa0f3a
child 55749 75a48dc4383e
permissions -rw-r--r--
more completion rendering: active, semantic, syntactic;
tuned;
     1 /*  Title:      Tools/jEdit/src/rendering.scala
     2     Author:     Makarius
     3 
     4 Isabelle-specific implementation of quasi-abstract rendering and
     5 markup interpretation.
     6 */
     7 
     8 package isabelle.jedit
     9 
    10 
    11 import isabelle._
    12 
    13 import java.awt.Color
    14 import javax.swing.Icon
    15 
    16 import org.gjt.sp.jedit.syntax.{Token => JEditToken}
    17 import org.gjt.sp.jedit.{jEdit, View}
    18 
    19 import scala.collection.immutable.SortedMap
    20 
    21 
    22 object Rendering
    23 {
    24   def apply(snapshot: Document.Snapshot, options: Options): Rendering =
    25     new Rendering(snapshot, options)
    26 
    27 
    28   /* message priorities */
    29 
    30   private val writeln_pri = 1
    31   private val information_pri = 2
    32   private val tracing_pri = 3
    33   private val warning_pri = 4
    34   private val legacy_pri = 5
    35   private val error_pri = 6
    36 
    37   private val message_pri = Map(
    38     Markup.WRITELN -> writeln_pri, Markup.WRITELN_MESSAGE -> writeln_pri,
    39     Markup.TRACING -> tracing_pri, Markup.TRACING_MESSAGE -> tracing_pri,
    40     Markup.WARNING -> warning_pri, Markup.WARNING_MESSAGE -> warning_pri,
    41     Markup.ERROR -> error_pri, Markup.ERROR_MESSAGE -> error_pri)
    42 
    43 
    44   /* jEdit font */
    45 
    46   def font_family(): String = jEdit.getProperty("view.font")
    47 
    48   private def view_font_size(): Int = jEdit.getIntegerProperty("view.fontsize", 16)
    49   private val font_size0 = 5
    50   private val font_size1 = 250
    51 
    52   def font_size(scale: String): Float =
    53     (view_font_size() * PIDE.options.real(scale)).toFloat max font_size0 min font_size1
    54 
    55   def font_size_change(view: View, change: Int => Int)
    56   {
    57     val size = change(view_font_size()) max font_size0 min font_size1
    58     jEdit.setIntegerProperty("view.fontsize", size)
    59     jEdit.propertiesChanged()
    60     jEdit.saveSettings()
    61     view.getStatus.setMessageAndClear("Text font size: " + size)
    62   }
    63 
    64 
    65   /* popup window bounds */
    66 
    67   def popup_bounds: Double = (PIDE.options.real("jedit_popup_bounds") max 0.2) min 0.8
    68 
    69 
    70   /* Isabelle/Isar token markup */
    71 
    72   private val command_style: Map[String, Byte] =
    73   {
    74     import JEditToken._
    75     Map[String, Byte](
    76       Keyword.THY_END -> KEYWORD2,
    77       Keyword.THY_SCRIPT -> LABEL,
    78       Keyword.QED_SCRIPT -> DIGIT,
    79       Keyword.PRF_SCRIPT -> DIGIT,
    80       Keyword.PRF_ASM -> KEYWORD3,
    81       Keyword.PRF_ASM_GOAL -> KEYWORD3,
    82       Keyword.PRF_ASM_GOAL_SCRIPT -> DIGIT
    83     ).withDefaultValue(KEYWORD1)
    84   }
    85 
    86   private val token_style: Map[Token.Kind.Value, Byte] =
    87   {
    88     import JEditToken._
    89     Map[Token.Kind.Value, Byte](
    90       Token.Kind.KEYWORD -> KEYWORD2,
    91       Token.Kind.IDENT -> NULL,
    92       Token.Kind.LONG_IDENT -> NULL,
    93       Token.Kind.SYM_IDENT -> NULL,
    94       Token.Kind.VAR -> NULL,
    95       Token.Kind.TYPE_IDENT -> NULL,
    96       Token.Kind.TYPE_VAR -> NULL,
    97       Token.Kind.NAT -> NULL,
    98       Token.Kind.FLOAT -> NULL,
    99       Token.Kind.STRING -> LITERAL1,
   100       Token.Kind.ALT_STRING -> LITERAL2,
   101       Token.Kind.VERBATIM -> COMMENT3,
   102       Token.Kind.CARTOUCHE -> COMMENT4,
   103       Token.Kind.SPACE -> NULL,
   104       Token.Kind.COMMENT -> COMMENT1,
   105       Token.Kind.ERROR -> INVALID
   106     ).withDefaultValue(NULL)
   107   }
   108 
   109   def token_markup(syntax: Outer_Syntax, token: Token): Byte =
   110     if (token.is_command) command_style(syntax.keyword_kind(token.content).getOrElse(""))
   111     else if (token.is_delimiter) JEditToken.OPERATOR
   112     else token_style(token.kind)
   113 
   114 
   115   /* Isabelle/ML token markup */
   116 
   117   private val ml_token_style: Map[ML_Lex.Kind.Value, Byte] =
   118   {
   119     import JEditToken._
   120     Map[ML_Lex.Kind.Value, Byte](
   121       ML_Lex.Kind.KEYWORD -> NULL,
   122       ML_Lex.Kind.IDENT -> NULL,
   123       ML_Lex.Kind.LONG_IDENT -> NULL,
   124       ML_Lex.Kind.TYPE_VAR -> NULL,
   125       ML_Lex.Kind.WORD -> DIGIT,
   126       ML_Lex.Kind.INT -> DIGIT,
   127       ML_Lex.Kind.REAL -> DIGIT,
   128       ML_Lex.Kind.CHAR -> LITERAL2,
   129       ML_Lex.Kind.STRING -> LITERAL1,
   130       ML_Lex.Kind.SPACE -> NULL,
   131       ML_Lex.Kind.COMMENT -> COMMENT1,
   132       ML_Lex.Kind.ANTIQ -> NULL,
   133       ML_Lex.Kind.ANTIQ_START -> LITERAL4,
   134       ML_Lex.Kind.ANTIQ_STOP -> LITERAL4,
   135       ML_Lex.Kind.ANTIQ_OTHER -> NULL,
   136       ML_Lex.Kind.ANTIQ_STRING -> NULL,
   137       ML_Lex.Kind.ANTIQ_ALT_STRING -> NULL,
   138       ML_Lex.Kind.ANTIQ_CARTOUCHE -> NULL,
   139       ML_Lex.Kind.ERROR -> INVALID
   140     ).withDefaultValue(NULL)
   141   }
   142 
   143   def ml_token_markup(token: ML_Lex.Token): Byte =
   144     if (!token.is_keyword) ml_token_style(token.kind)
   145     else if (token.is_delimiter) JEditToken.OPERATOR
   146     else if (ML_Lex.keywords2(token.source)) JEditToken.KEYWORD2
   147     else if (ML_Lex.keywords3(token.source)) JEditToken.KEYWORD3
   148     else JEditToken.KEYWORD1
   149 
   150 
   151   /* markup elements */
   152 
   153   private val completion_names_elements = Set(Markup.COMPLETION)
   154 
   155   private val completion_context_elements =
   156     Set(Markup.STRING, Markup.ALTSTRING, Markup.VERBATIM,
   157       Markup.CARTOUCHE, Markup.COMMENT, Markup.LANGUAGE,
   158       Markup.ML_STRING, Markup.ML_COMMENT)
   159 
   160   private val highlight_elements =
   161     Set(Markup.LANGUAGE, Markup.ML_TYPING, Markup.TOKEN_RANGE,
   162       Markup.ENTITY, Markup.PATH, Markup.URL, Markup.SORTING,
   163       Markup.TYPING, Markup.FREE, Markup.SKOLEM, Markup.BOUND,
   164       Markup.VAR, Markup.TFREE, Markup.TVAR)
   165 
   166   private val hyperlink_elements =
   167     Set(Markup.ENTITY, Markup.PATH, Markup.POSITION, Markup.URL)
   168 
   169   private val active_elements =
   170     Set(Markup.DIALOG, Markup.BROWSER, Markup.GRAPHVIEW,
   171       Markup.SENDBACK, Markup.SIMP_TRACE)
   172 
   173   private val tooltip_message_elements =
   174     Set(Markup.WRITELN, Markup.WARNING, Markup.ERROR, Markup.BAD)
   175 
   176   private val tooltip_descriptions =
   177     Map(
   178       Markup.TOKEN_RANGE -> "inner syntax token",
   179       Markup.FREE -> "free variable",
   180       Markup.SKOLEM -> "skolem variable",
   181       Markup.BOUND -> "bound variable",
   182       Markup.VAR -> "schematic variable",
   183       Markup.TFREE -> "free type variable",
   184       Markup.TVAR -> "schematic type variable")
   185 
   186   private val tooltip_elements =
   187     Set(Markup.LANGUAGE, Markup.TIMING, Markup.ENTITY, Markup.SORTING,
   188       Markup.TYPING, Markup.ML_TYPING, Markup.PATH, Markup.URL) ++
   189       tooltip_descriptions.keys
   190 
   191   private val gutter_elements =
   192     Set(Markup.WRITELN, Markup.WARNING, Markup.ERROR)
   193 
   194   private val squiggly_elements =
   195     Set(Markup.WRITELN, Markup.WARNING, Markup.ERROR)
   196 
   197   private val line_background_elements =
   198     Set(Markup.WRITELN_MESSAGE, Markup.TRACING_MESSAGE,
   199       Markup.WARNING_MESSAGE, Markup.ERROR_MESSAGE,
   200       Markup.INFORMATION)
   201 
   202   private val separator_elements = Set(Markup.SEPARATOR)
   203 
   204   private val background1_elements =
   205     Protocol.command_status_elements + Markup.WRITELN_MESSAGE +
   206       Markup.TRACING_MESSAGE + Markup.WARNING_MESSAGE +
   207       Markup.ERROR_MESSAGE + Markup.BAD + Markup.INTENSIFY ++
   208       active_elements
   209 
   210   private val background2_elements = Set(Markup.TOKEN_RANGE)
   211 
   212   private val foreground_elements =
   213     Set(Markup.STRING, Markup.ALTSTRING, Markup.VERBATIM,
   214       Markup.CARTOUCHE, Markup.ANTIQUOTED)
   215 
   216   private val bullet_elements = Set(Markup.BULLET)
   217 
   218   private val fold_depth_elements =
   219     Set(Markup.TEXT_FOLD, Markup.GOAL, Markup.SUBGOAL)
   220 }
   221 
   222 
   223 class Rendering private(val snapshot: Document.Snapshot, val options: Options)
   224 {
   225   override def toString: String = "Rendering(" + snapshot.toString + ")"
   226 
   227 
   228   /* colors */
   229 
   230   def color_value(s: String): Color = Color_Value(options.string(s))
   231 
   232   val outdated_color = color_value("outdated_color")
   233   val unprocessed_color = color_value("unprocessed_color")
   234   val unprocessed1_color = color_value("unprocessed1_color")
   235   val running_color = color_value("running_color")
   236   val running1_color = color_value("running1_color")
   237   val light_color = color_value("light_color")
   238   val bullet_color = color_value("bullet_color")
   239   val tooltip_color = color_value("tooltip_color")
   240   val writeln_color = color_value("writeln_color")
   241   val information_color = color_value("information_color")
   242   val warning_color = color_value("warning_color")
   243   val error_color = color_value("error_color")
   244   val error1_color = color_value("error1_color")
   245   val writeln_message_color = color_value("writeln_message_color")
   246   val information_message_color = color_value("information_message_color")
   247   val tracing_message_color = color_value("tracing_message_color")
   248   val warning_message_color = color_value("warning_message_color")
   249   val error_message_color = color_value("error_message_color")
   250   val bad_color = color_value("bad_color")
   251   val intensify_color = color_value("intensify_color")
   252   val quoted_color = color_value("quoted_color")
   253   val antiquoted_color = color_value("antiquoted_color")
   254   val antiquote_color = color_value("antiquote_color")
   255   val highlight_color = color_value("highlight_color")
   256   val hyperlink_color = color_value("hyperlink_color")
   257   val active_color = color_value("active_color")
   258   val active_hover_color = color_value("active_hover_color")
   259   val active_result_color = color_value("active_result_color")
   260   val keyword1_color = color_value("keyword1_color")
   261   val keyword2_color = color_value("keyword2_color")
   262   val keyword3_color = color_value("keyword3_color")
   263   val caret_invisible_color = color_value("caret_invisible_color")
   264   val completion_color = color_value("completion_color")
   265 
   266   val tfree_color = color_value("tfree_color")
   267   val tvar_color = color_value("tvar_color")
   268   val free_color = color_value("free_color")
   269   val skolem_color = color_value("skolem_color")
   270   val bound_color = color_value("bound_color")
   271   val var_color = color_value("var_color")
   272   val inner_numeral_color = color_value("inner_numeral_color")
   273   val inner_quoted_color = color_value("inner_quoted_color")
   274   val inner_cartouche_color = color_value("inner_cartouche_color")
   275   val inner_comment_color = color_value("inner_comment_color")
   276   val dynamic_color = color_value("dynamic_color")
   277 
   278 
   279   /* completion */
   280 
   281   def completion_names(range: Text.Range): Option[Completion.Names] =
   282     if (snapshot.is_outdated) None
   283     else {
   284       snapshot.select(range, Rendering.completion_names_elements, _ =>
   285         {
   286           case Completion.Names.Info(names) => Some(names)
   287           case _ => None
   288         }).headOption.map(_.info)
   289     }
   290 
   291   def completion_context(range: Text.Range): Option[Completion.Context] =
   292     snapshot.select(range, Rendering.completion_context_elements, _ =>
   293       {
   294         case Text.Info(_, XML.Elem(Markup.Language(language, symbols, antiquotes), _)) =>
   295           Some(Completion.Context(language, symbols, antiquotes))
   296         case Text.Info(_, elem)
   297         if elem.name == Markup.ML_STRING || elem.name == Markup.ML_COMMENT =>
   298           Some(Completion.Context.ML_inner)
   299         case Text.Info(_, _) =>
   300           Some(Completion.Context.inner)
   301       }).headOption.map(_.info)
   302 
   303 
   304   /* command status overview */
   305 
   306   def overview_limit: Int = options.int("jedit_text_overview_limit")
   307 
   308   def overview_color(range: Text.Range): Option[Color] =
   309   {
   310     if (snapshot.is_outdated) None
   311     else {
   312       val results =
   313         snapshot.cumulate[(Protocol.Status, Int)](
   314           range, (Protocol.Status.init, 0), Protocol.status_elements, _ =>
   315           {
   316             case ((status, pri), Text.Info(_, elem)) =>
   317               if (Protocol.command_status_elements(elem.name))
   318                 Some((Protocol.command_status(status, elem.markup), pri))
   319               else
   320                 Some((status, pri max Rendering.message_pri(elem.name)))
   321           }, status = true)
   322       if (results.isEmpty) None
   323       else {
   324         val (status, pri) =
   325           ((Protocol.Status.init, 0) /: results) {
   326             case ((s1, p1), Text.Info(_, (s2, p2))) => (s1 + s2, p1 max p2) }
   327 
   328         if (status.is_running) Some(running_color)
   329         else if (pri == Rendering.warning_pri) Some(warning_color)
   330         else if (pri == Rendering.error_pri) Some(error_color)
   331         else if (status.is_unprocessed) Some(unprocessed_color)
   332         else if (status.is_failed) Some(error_color)
   333         else None
   334       }
   335     }
   336   }
   337 
   338 
   339   /* highlighted area */
   340 
   341   def highlight(range: Text.Range): Option[Text.Info[Color]] =
   342     snapshot.select(range, Rendering.highlight_elements, _ =>
   343       {
   344         case info => Some(Text.Info(snapshot.convert(info.range), highlight_color))
   345       }).headOption.map(_.info)
   346 
   347 
   348   /* hyperlinks */
   349 
   350   private def hyperlink_file(line: Int, name: String): Option[PIDE.editor.Hyperlink] =
   351     if (Path.is_ok(name))
   352       Isabelle_System.source_file(Path.explode(name)).map(path =>
   353         PIDE.editor.hyperlink_file(Isabelle_System.platform_path(path), line))
   354     else None
   355 
   356   private def hyperlink_command(id: Document_ID.Generic, offset: Text.Offset)
   357       : Option[PIDE.editor.Hyperlink] =
   358     snapshot.state.find_command(snapshot.version, id) match {
   359       case Some((node, command)) =>
   360         PIDE.editor.hyperlink_command(snapshot, command, offset)
   361       case None => None
   362     }
   363 
   364   def hyperlink(range: Text.Range): Option[Text.Info[PIDE.editor.Hyperlink]] =
   365   {
   366     snapshot.cumulate[Vector[Text.Info[PIDE.editor.Hyperlink]]](
   367       range, Vector.empty, Rendering.hyperlink_elements, _ =>
   368         {
   369           case (links, Text.Info(info_range, XML.Elem(Markup.Path(name), _)))
   370           if Path.is_ok(name) =>
   371             val jedit_file = PIDE.thy_load.append(snapshot.node_name.master_dir, Path.explode(name))
   372             val link = PIDE.editor.hyperlink_file(jedit_file)
   373             Some(links :+ Text.Info(snapshot.convert(info_range), link))
   374 
   375           case (links, Text.Info(info_range, XML.Elem(Markup.Url(name), _))) =>
   376             val link = PIDE.editor.hyperlink_url(name)
   377             Some(links :+ Text.Info(snapshot.convert(info_range), link))
   378 
   379           case (links, Text.Info(info_range, XML.Elem(Markup(Markup.ENTITY, props), _)))
   380           if !props.exists(
   381             { case (Markup.KIND, Markup.ML_OPEN) => true
   382               case (Markup.KIND, Markup.ML_STRUCT) => true
   383               case _ => false }) =>
   384 
   385             val opt_link =
   386               props match {
   387                 case Position.Def_Line_File(line, name) => hyperlink_file(line, name)
   388                 case Position.Def_Id_Offset(id, offset) => hyperlink_command(id, offset)
   389                 case _ => None
   390               }
   391             opt_link.map(link => (links :+ Text.Info(snapshot.convert(info_range), link)))
   392 
   393           case (links, Text.Info(info_range, XML.Elem(Markup(Markup.POSITION, props), _))) =>
   394             val opt_link =
   395               props match {
   396                 case Position.Line_File(line, name) => hyperlink_file(line, name)
   397                 case Position.Id_Offset(id, offset) => hyperlink_command(id, offset)
   398                 case _ => None
   399               }
   400             opt_link.map(link => links :+ (Text.Info(snapshot.convert(info_range), link)))
   401 
   402           case _ => None
   403         }) match { case Text.Info(_, _ :+ info) :: _ => Some(info) case _ => None }
   404   }
   405 
   406 
   407   /* active elements */
   408 
   409   def active(range: Text.Range): Option[Text.Info[XML.Elem]] =
   410     snapshot.select(range, Rendering.active_elements, command_state =>
   411       {
   412         case Text.Info(info_range, elem) =>
   413           if (elem.name == Markup.DIALOG) {
   414             elem match {
   415               case Protocol.Dialog(_, serial, _)
   416               if !command_state.results.defined(serial) =>
   417                 Some(Text.Info(snapshot.convert(info_range), elem))
   418               case _ => None
   419             }
   420           }
   421           else Some(Text.Info(snapshot.convert(info_range), elem))
   422       }).headOption.map(_.info)
   423 
   424   def command_results(range: Text.Range): Command.Results =
   425   {
   426     val results =
   427       snapshot.select[Command.Results](range, _ => true, command_state =>
   428         { case _ => Some(command_state.results) }).map(_.info)
   429     (Command.Results.empty /: results)(_ ++ _)
   430   }
   431 
   432 
   433   /* tooltip messages */
   434 
   435   def tooltip_message(range: Text.Range): Option[Text.Info[XML.Body]] =
   436   {
   437     val results =
   438       snapshot.cumulate[List[Text.Info[Command.Results.Entry]]](
   439         range, Nil, Rendering.tooltip_message_elements, _ =>
   440         {
   441           case (msgs, Text.Info(info_range,
   442             XML.Elem(Markup(name, props @ Markup.Serial(serial)), body)))
   443           if name == Markup.WRITELN || name == Markup.WARNING || name == Markup.ERROR =>
   444             val entry: Command.Results.Entry =
   445               (serial -> XML.Elem(Markup(Markup.message(name), props), body))
   446             Some(Text.Info(snapshot.convert(info_range), entry) :: msgs)
   447 
   448           case (msgs, Text.Info(info_range, msg @ XML.Elem(Markup(Markup.BAD, _), body)))
   449           if !body.isEmpty =>
   450             val entry: Command.Results.Entry = (Document_ID.make(), msg)
   451             Some(Text.Info(snapshot.convert(info_range), entry) :: msgs)
   452 
   453           case _ => None
   454         }).flatMap(_.info)
   455     if (results.isEmpty) None
   456     else {
   457       val r = Text.Range(results.head.range.start, results.last.range.stop)
   458       val msgs = Command.Results.make(results.map(_.info))
   459       Some(Text.Info(r, Pretty.separate(msgs.entries.map(_._2).toList)))
   460     }
   461   }
   462 
   463 
   464   /* tooltips */
   465 
   466   private def pretty_typing(kind: String, body: XML.Body): XML.Tree =
   467     Pretty.block(XML.Text(kind) :: Pretty.Break(1) :: body)
   468 
   469   private def timing_threshold: Double = options.real("jedit_timing_threshold")
   470 
   471   def tooltip(range: Text.Range): Option[Text.Info[XML.Body]] =
   472   {
   473     def add(prev: Text.Info[(Timing, Vector[(Boolean, XML.Tree)])],
   474       r0: Text.Range, p: (Boolean, XML.Tree)): Text.Info[(Timing, Vector[(Boolean, XML.Tree)])] =
   475     {
   476       val r = snapshot.convert(r0)
   477       val (t, info) = prev.info
   478       if (prev.range == r)
   479         Text.Info(r, (t, info :+ p))
   480       else Text.Info(r, (t, Vector(p)))
   481     }
   482 
   483     val results =
   484       snapshot.cumulate[Text.Info[(Timing, Vector[(Boolean, XML.Tree)])]](
   485         range, Text.Info(range, (Timing.zero, Vector.empty)), Rendering.tooltip_elements, _ =>
   486         {
   487           case (Text.Info(r, (t1, info)), Text.Info(_, XML.Elem(Markup.Timing(t2), _))) =>
   488             Some(Text.Info(r, (t1 + t2, info)))
   489           case (prev, Text.Info(r, XML.Elem(Markup.Entity(kind, name), _))) =>
   490             val kind1 = space_explode('_', kind).mkString(" ")
   491             val txt1 = kind1 + " " + quote(name)
   492             val t = prev.info._1
   493             val txt2 =
   494               if (kind == Markup.COMMAND && t.elapsed.seconds >= timing_threshold)
   495                 "\n" + t.message
   496               else ""
   497             Some(add(prev, r, (true, XML.Text(txt1 + txt2))))
   498           case (prev, Text.Info(r, XML.Elem(Markup.Path(name), _)))
   499           if Path.is_ok(name) =>
   500             val jedit_file = PIDE.thy_load.append(snapshot.node_name.master_dir, Path.explode(name))
   501             Some(add(prev, r, (true, XML.Text("file " + quote(jedit_file)))))
   502           case (prev, Text.Info(r, XML.Elem(Markup.Url(name), _))) =>
   503             Some(add(prev, r, (true, XML.Text("URL " + quote(name)))))
   504           case (prev, Text.Info(r, XML.Elem(Markup(name, _), body)))
   505           if name == Markup.SORTING || name == Markup.TYPING =>
   506             Some(add(prev, r, (true, pretty_typing("::", body))))
   507           case (prev, Text.Info(r, XML.Elem(Markup(Markup.ML_TYPING, _), body))) =>
   508             Some(add(prev, r, (false, pretty_typing("ML:", body))))
   509           case (prev, Text.Info(r, XML.Elem(Markup.Language(language, _, _), _))) =>
   510             Some(add(prev, r, (true, XML.Text("language: " + language))))
   511           case (prev, Text.Info(r, XML.Elem(Markup(name, _), _))) =>
   512             Rendering.tooltip_descriptions.get(name).
   513               map(descr => add(prev, r, (true, XML.Text(descr))))
   514         }).map(_.info)
   515 
   516     results.map(_.info).flatMap(res => res._2.toList) match {
   517       case Nil => None
   518       case tips =>
   519         val r = Text.Range(results.head.range.start, results.last.range.stop)
   520         val all_tips = (tips.filter(_._1) ++ tips.filter(!_._1).lastOption.toList).map(_._2)
   521         Some(Text.Info(r, Library.separate(Pretty.FBreak, all_tips)))
   522     }
   523   }
   524 
   525   def tooltip_margin: Int = options.int("jedit_tooltip_margin")
   526 
   527   lazy val tooltip_close_icon = JEdit_Lib.load_icon(options.string("tooltip_close_icon"))
   528   lazy val tooltip_detach_icon = JEdit_Lib.load_icon(options.string("tooltip_detach_icon"))
   529 
   530 
   531   /* gutter icons */
   532 
   533   private lazy val gutter_icons = Map(
   534     Rendering.information_pri -> JEdit_Lib.load_icon(options.string("gutter_information_icon")),
   535     Rendering.warning_pri -> JEdit_Lib.load_icon(options.string("gutter_warning_icon")),
   536     Rendering.legacy_pri -> JEdit_Lib.load_icon(options.string("gutter_legacy_icon")),
   537     Rendering.error_pri -> JEdit_Lib.load_icon(options.string("gutter_error_icon")))
   538 
   539   def gutter_message(range: Text.Range): Option[Icon] =
   540   {
   541     val results =
   542       snapshot.cumulate[Int](range, 0, Rendering.gutter_elements, _ =>
   543         {
   544           case (pri, Text.Info(_, XML.Elem(Markup(Markup.WRITELN, _),
   545               List(XML.Elem(Markup(Markup.INFORMATION, _), _))))) =>
   546             Some(pri max Rendering.information_pri)
   547           case (pri, Text.Info(_, XML.Elem(Markup(Markup.WARNING, _), body))) =>
   548             body match {
   549               case List(XML.Elem(Markup(Markup.LEGACY, _), _)) =>
   550                 Some(pri max Rendering.legacy_pri)
   551               case _ =>
   552                 Some(pri max Rendering.warning_pri)
   553             }
   554           case (pri, Text.Info(_, XML.Elem(Markup(Markup.ERROR, _), _))) =>
   555             Some(pri max Rendering.error_pri)
   556           case _ => None
   557         })
   558     val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
   559     gutter_icons.get(pri)
   560   }
   561 
   562 
   563   /* squiggly underline */
   564 
   565   private lazy val squiggly_colors = Map(
   566     Rendering.writeln_pri -> writeln_color,
   567     Rendering.information_pri -> information_color,
   568     Rendering.warning_pri -> warning_color,
   569     Rendering.error_pri -> error_color)
   570 
   571   def squiggly_underline(range: Text.Range): List[Text.Info[Color]] =
   572   {
   573     val results =
   574       snapshot.cumulate[Int](range, 0, Rendering.squiggly_elements, _ =>
   575         {
   576           case (pri, Text.Info(_, elem)) =>
   577             if (Protocol.is_information(elem))
   578               Some(pri max Rendering.information_pri)
   579             else
   580               Some(pri max Rendering.message_pri(elem.name))
   581         })
   582     for {
   583       Text.Info(r, pri) <- results
   584       color <- squiggly_colors.get(pri)
   585     } yield Text.Info(r, color)
   586   }
   587 
   588 
   589   /* message output */
   590 
   591   private lazy val message_colors = Map(
   592     Rendering.writeln_pri -> writeln_message_color,
   593     Rendering.information_pri -> information_message_color,
   594     Rendering.tracing_pri -> tracing_message_color,
   595     Rendering.warning_pri -> warning_message_color,
   596     Rendering.error_pri -> error_message_color)
   597 
   598   def line_background(range: Text.Range): Option[(Color, Boolean)] =
   599   {
   600     val results =
   601       snapshot.cumulate[Int](range, 0, Rendering.line_background_elements, _ =>
   602         {
   603           case (pri, Text.Info(_, elem)) =>
   604             if (elem.name == Markup.INFORMATION)
   605               Some(pri max Rendering.information_pri)
   606             else
   607               Some(pri max Rendering.message_pri(elem.name))
   608         })
   609     val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
   610 
   611     val is_separator =
   612       pri > 0 &&
   613       snapshot.cumulate[Boolean](range, false, Rendering.separator_elements, _ =>
   614         {
   615           case _ => Some(true)
   616         }).exists(_.info)
   617 
   618     message_colors.get(pri).map((_, is_separator))
   619   }
   620 
   621   def output_messages(st: Command.State): List[XML.Tree] =
   622     st.results.entries.map(_._2).filterNot(Protocol.is_result(_)).toList
   623 
   624 
   625   /* text background */
   626 
   627   def background1(range: Text.Range): List[Text.Info[Color]] =
   628   {
   629     if (snapshot.is_outdated) List(Text.Info(range, outdated_color))
   630     else
   631       for {
   632         Text.Info(r, result) <-
   633           snapshot.cumulate[(Option[Protocol.Status], Option[Color])](
   634             range, (Some(Protocol.Status.init), None), Rendering.background1_elements,
   635             command_state =>
   636               {
   637                 case (((Some(status), color), Text.Info(_, XML.Elem(markup, _))))
   638                 if (Protocol.command_status_elements(markup.name)) =>
   639                   Some((Some(Protocol.command_status(status, markup)), color))
   640                 case (_, Text.Info(_, XML.Elem(Markup(Markup.BAD, _), _))) =>
   641                   Some((None, Some(bad_color)))
   642                 case (_, Text.Info(_, XML.Elem(Markup(Markup.INTENSIFY, _), _))) =>
   643                   Some((None, Some(intensify_color)))
   644                 case (acc, Text.Info(_, Protocol.Dialog(_, serial, result))) =>
   645                   command_state.results.get(serial) match {
   646                     case Some(Protocol.Dialog_Result(res)) if res == result =>
   647                       Some((None, Some(active_result_color)))
   648                     case _ =>
   649                       Some((None, Some(active_color)))
   650                   }
   651                 case (_, Text.Info(_, elem)) =>
   652                   if (Rendering.active_elements(elem.name)) Some((None, Some(active_color)))
   653                   else None
   654               })
   655         color <-
   656           (result match {
   657             case (Some(status), opt_color) =>
   658               if (status.is_unprocessed) Some(unprocessed1_color)
   659               else if (status.is_running) Some(running1_color)
   660               else opt_color
   661             case (_, opt_color) => opt_color
   662           })
   663       } yield Text.Info(r, color)
   664   }
   665 
   666   def background2(range: Text.Range): List[Text.Info[Color]] =
   667     snapshot.select(range, Rendering.background2_elements, _ => _ => Some(light_color))
   668 
   669 
   670   /* text foreground */
   671 
   672   def foreground(range: Text.Range): List[Text.Info[Color]] =
   673     snapshot.select(range, Rendering.foreground_elements, _ =>
   674       {
   675         case Text.Info(_, elem) =>
   676           if (elem.name == Markup.ANTIQUOTED) Some(antiquoted_color) else Some(quoted_color)
   677       })
   678 
   679 
   680   /* text color */
   681 
   682   private lazy val text_colors: Map[String, Color] = Map(
   683       Markup.KEYWORD1 -> keyword1_color,
   684       Markup.KEYWORD2 -> keyword2_color,
   685       Markup.STRING -> Color.BLACK,
   686       Markup.ALTSTRING -> Color.BLACK,
   687       Markup.VERBATIM -> Color.BLACK,
   688       Markup.CARTOUCHE -> Color.BLACK,
   689       Markup.LITERAL -> keyword1_color,
   690       Markup.DELIMITER -> Color.BLACK,
   691       Markup.TFREE -> tfree_color,
   692       Markup.TVAR -> tvar_color,
   693       Markup.FREE -> free_color,
   694       Markup.SKOLEM -> skolem_color,
   695       Markup.BOUND -> bound_color,
   696       Markup.VAR -> var_color,
   697       Markup.INNER_STRING -> inner_quoted_color,
   698       Markup.INNER_CARTOUCHE -> inner_cartouche_color,
   699       Markup.INNER_COMMENT -> inner_comment_color,
   700       Markup.DYNAMIC_FACT -> dynamic_color,
   701       Markup.ANTIQUOTE -> antiquote_color,
   702       Markup.ML_KEYWORD1 -> keyword1_color,
   703       Markup.ML_KEYWORD2 -> keyword2_color,
   704       Markup.ML_KEYWORD3 -> keyword3_color,
   705       Markup.ML_DELIMITER -> Color.BLACK,
   706       Markup.ML_NUMERAL -> inner_numeral_color,
   707       Markup.ML_CHAR -> inner_quoted_color,
   708       Markup.ML_STRING -> inner_quoted_color,
   709       Markup.ML_COMMENT -> inner_comment_color)
   710 
   711   private lazy val text_color_elements = text_colors.keySet
   712 
   713   def text_color(range: Text.Range, color: Color): List[Text.Info[Color]] =
   714   {
   715     if (color == Token_Markup.hidden_color) List(Text.Info(range, color))
   716     else
   717       snapshot.cumulate(range, color, text_color_elements, _ =>
   718         {
   719           case (_, Text.Info(_, elem)) => text_colors.get(elem.name)
   720         })
   721   }
   722 
   723 
   724   /* virtual bullets */
   725 
   726   def bullet(range: Text.Range): List[Text.Info[Color]] =
   727     snapshot.select(range, Rendering.bullet_elements, _ => _ => Some(bullet_color))
   728 
   729 
   730   /* text folds */
   731 
   732   def fold_depth(range: Text.Range): List[Text.Info[Int]] =
   733     snapshot.cumulate[Int](range, 0, Rendering.fold_depth_elements, _ =>
   734       {
   735         case (depth, _) => Some(depth + 1)
   736       })
   737 }