src/Tools/jEdit/src/rendering.scala
author wenzelm
Sun Feb 23 16:08:38 2014 +0100 (2014-02-23 ago)
changeset 55690 d73949233c2e
parent 55689 13b58baf994b
child 55710 2d623ab55672
permissions -rw-r--r--
clarified stretch_point_range wrt. UTF-16 surrogates;
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   /* colors */
   226 
   227   def color_value(s: String): Color = Color_Value(options.string(s))
   228 
   229   val outdated_color = color_value("outdated_color")
   230   val unprocessed_color = color_value("unprocessed_color")
   231   val unprocessed1_color = color_value("unprocessed1_color")
   232   val running_color = color_value("running_color")
   233   val running1_color = color_value("running1_color")
   234   val light_color = color_value("light_color")
   235   val bullet_color = color_value("bullet_color")
   236   val tooltip_color = color_value("tooltip_color")
   237   val writeln_color = color_value("writeln_color")
   238   val information_color = color_value("information_color")
   239   val warning_color = color_value("warning_color")
   240   val error_color = color_value("error_color")
   241   val error1_color = color_value("error1_color")
   242   val writeln_message_color = color_value("writeln_message_color")
   243   val information_message_color = color_value("information_message_color")
   244   val tracing_message_color = color_value("tracing_message_color")
   245   val warning_message_color = color_value("warning_message_color")
   246   val error_message_color = color_value("error_message_color")
   247   val bad_color = color_value("bad_color")
   248   val intensify_color = color_value("intensify_color")
   249   val quoted_color = color_value("quoted_color")
   250   val antiquoted_color = color_value("antiquoted_color")
   251   val antiquote_color = color_value("antiquote_color")
   252   val highlight_color = color_value("highlight_color")
   253   val hyperlink_color = color_value("hyperlink_color")
   254   val active_color = color_value("active_color")
   255   val active_hover_color = color_value("active_hover_color")
   256   val active_result_color = color_value("active_result_color")
   257   val keyword1_color = color_value("keyword1_color")
   258   val keyword2_color = color_value("keyword2_color")
   259   val keyword3_color = color_value("keyword3_color")
   260 
   261   val tfree_color = color_value("tfree_color")
   262   val tvar_color = color_value("tvar_color")
   263   val free_color = color_value("free_color")
   264   val skolem_color = color_value("skolem_color")
   265   val bound_color = color_value("bound_color")
   266   val var_color = color_value("var_color")
   267   val inner_numeral_color = color_value("inner_numeral_color")
   268   val inner_quoted_color = color_value("inner_quoted_color")
   269   val inner_cartouche_color = color_value("inner_cartouche_color")
   270   val inner_comment_color = color_value("inner_comment_color")
   271   val dynamic_color = color_value("dynamic_color")
   272 
   273 
   274   /* completion */
   275 
   276   def completion_names(range: Text.Range): Option[Completion.Names] =
   277     if (snapshot.is_outdated) None
   278     else {
   279       snapshot.select(range, Rendering.completion_names_elements, _ =>
   280         {
   281           case Completion.Names.Info(names) => Some(names)
   282           case _ => None
   283         }).headOption.map(_.info)
   284     }
   285 
   286   def completion_context(range: Text.Range): Option[Completion.Context] =
   287     snapshot.select(range, Rendering.completion_context_elements, _ =>
   288       {
   289         case Text.Info(_, elem)
   290         if elem.name == Markup.ML_STRING || elem.name == Markup.ML_COMMENT =>
   291           Some(Completion.Context.ML_inner)
   292         case Text.Info(_, XML.Elem(Markup.Language(language, symbols, antiquotes), _)) =>
   293           Some(Completion.Context(language, symbols, antiquotes))
   294         case Text.Info(_, _) =>
   295           Some(Completion.Context.inner)
   296       }).headOption.map(_.info)
   297 
   298 
   299   /* command status overview */
   300 
   301   def overview_limit: Int = options.int("jedit_text_overview_limit")
   302 
   303   def overview_color(range: Text.Range): Option[Color] =
   304   {
   305     if (snapshot.is_outdated) None
   306     else {
   307       val results =
   308         snapshot.cumulate[(Protocol.Status, Int)](
   309           range, (Protocol.Status.init, 0), Protocol.status_elements, _ =>
   310           {
   311             case ((status, pri), Text.Info(_, elem)) =>
   312               if (Protocol.command_status_elements(elem.name))
   313                 Some((Protocol.command_status(status, elem.markup), pri))
   314               else
   315                 Some((status, pri max Rendering.message_pri(elem.name)))
   316           }, status = true)
   317       if (results.isEmpty) None
   318       else {
   319         val (status, pri) =
   320           ((Protocol.Status.init, 0) /: results) {
   321             case ((s1, p1), Text.Info(_, (s2, p2))) => (s1 + s2, p1 max p2) }
   322 
   323         if (status.is_running) Some(running_color)
   324         else if (pri == Rendering.warning_pri) Some(warning_color)
   325         else if (pri == Rendering.error_pri) Some(error_color)
   326         else if (status.is_unprocessed) Some(unprocessed_color)
   327         else if (status.is_failed) Some(error_color)
   328         else None
   329       }
   330     }
   331   }
   332 
   333 
   334   /* highlighted area */
   335 
   336   def highlight(range: Text.Range): Option[Text.Info[Color]] =
   337     snapshot.select(range, Rendering.highlight_elements, _ =>
   338       {
   339         case info => Some(Text.Info(snapshot.convert(info.range), highlight_color))
   340       }).headOption.map(_.info)
   341 
   342 
   343   /* hyperlinks */
   344 
   345   private def hyperlink_file(line: Int, name: String): Option[PIDE.editor.Hyperlink] =
   346     if (Path.is_ok(name))
   347       Isabelle_System.source_file(Path.explode(name)).map(path =>
   348         PIDE.editor.hyperlink_file(Isabelle_System.platform_path(path), line))
   349     else None
   350 
   351   private def hyperlink_command(id: Document_ID.Generic, offset: Text.Offset)
   352       : Option[PIDE.editor.Hyperlink] =
   353     snapshot.state.find_command(snapshot.version, id) match {
   354       case Some((node, command)) =>
   355         PIDE.editor.hyperlink_command(snapshot, command, offset)
   356       case None => None
   357     }
   358 
   359   def hyperlink(range: Text.Range): Option[Text.Info[PIDE.editor.Hyperlink]] =
   360   {
   361     snapshot.cumulate[Vector[Text.Info[PIDE.editor.Hyperlink]]](
   362       range, Vector.empty, Rendering.hyperlink_elements, _ =>
   363         {
   364           case (links, Text.Info(info_range, XML.Elem(Markup.Path(name), _)))
   365           if Path.is_ok(name) =>
   366             val jedit_file = PIDE.thy_load.append(snapshot.node_name.master_dir, Path.explode(name))
   367             val link = PIDE.editor.hyperlink_file(jedit_file)
   368             Some(links :+ Text.Info(snapshot.convert(info_range), link))
   369 
   370           case (links, Text.Info(info_range, XML.Elem(Markup.Url(name), _))) =>
   371             val link = PIDE.editor.hyperlink_url(name)
   372             Some(links :+ Text.Info(snapshot.convert(info_range), link))
   373 
   374           case (links, Text.Info(info_range, XML.Elem(Markup(Markup.ENTITY, props), _)))
   375           if !props.exists(
   376             { case (Markup.KIND, Markup.ML_OPEN) => true
   377               case (Markup.KIND, Markup.ML_STRUCT) => true
   378               case _ => false }) =>
   379 
   380             val opt_link =
   381               props match {
   382                 case Position.Def_Line_File(line, name) => hyperlink_file(line, name)
   383                 case Position.Def_Id_Offset(id, offset) => hyperlink_command(id, offset)
   384                 case _ => None
   385               }
   386             opt_link.map(link => (links :+ Text.Info(snapshot.convert(info_range), link)))
   387 
   388           case (links, Text.Info(info_range, XML.Elem(Markup(Markup.POSITION, props), _))) =>
   389             val opt_link =
   390               props match {
   391                 case Position.Line_File(line, name) => hyperlink_file(line, name)
   392                 case Position.Id_Offset(id, offset) => hyperlink_command(id, offset)
   393                 case _ => None
   394               }
   395             opt_link.map(link => links :+ (Text.Info(snapshot.convert(info_range), link)))
   396 
   397           case _ => None
   398         }) match { case Text.Info(_, _ :+ info) :: _ => Some(info) case _ => None }
   399   }
   400 
   401 
   402   /* active elements */
   403 
   404   def active(range: Text.Range): Option[Text.Info[XML.Elem]] =
   405     snapshot.select(range, Rendering.active_elements, command_state =>
   406       {
   407         case Text.Info(info_range, elem) =>
   408           if (elem.name == Markup.DIALOG) {
   409             elem match {
   410               case Protocol.Dialog(_, serial, _)
   411               if !command_state.results.defined(serial) =>
   412                 Some(Text.Info(snapshot.convert(info_range), elem))
   413               case _ => None
   414             }
   415           }
   416           else Some(Text.Info(snapshot.convert(info_range), elem))
   417       }).headOption.map(_.info)
   418 
   419   def command_results(range: Text.Range): Command.Results =
   420   {
   421     val results =
   422       snapshot.select[Command.Results](range, _ => true, command_state =>
   423         { case _ => Some(command_state.results) }).map(_.info)
   424     (Command.Results.empty /: results)(_ ++ _)
   425   }
   426 
   427 
   428   /* tooltip messages */
   429 
   430   def tooltip_message(range: Text.Range): Option[Text.Info[XML.Body]] =
   431   {
   432     val results =
   433       snapshot.cumulate[List[Text.Info[Command.Results.Entry]]](
   434         range, Nil, Rendering.tooltip_message_elements, _ =>
   435         {
   436           case (msgs, Text.Info(info_range,
   437             XML.Elem(Markup(name, props @ Markup.Serial(serial)), body)))
   438           if name == Markup.WRITELN || name == Markup.WARNING || name == Markup.ERROR =>
   439             val entry: Command.Results.Entry =
   440               (serial -> XML.Elem(Markup(Markup.message(name), props), body))
   441             Some(Text.Info(snapshot.convert(info_range), entry) :: msgs)
   442 
   443           case (msgs, Text.Info(info_range, msg @ XML.Elem(Markup(Markup.BAD, _), body)))
   444           if !body.isEmpty =>
   445             val entry: Command.Results.Entry = (Document_ID.make(), msg)
   446             Some(Text.Info(snapshot.convert(info_range), entry) :: msgs)
   447 
   448           case _ => None
   449         }).flatMap(_.info)
   450     if (results.isEmpty) None
   451     else {
   452       val r = Text.Range(results.head.range.start, results.last.range.stop)
   453       val msgs = Command.Results.make(results.map(_.info))
   454       Some(Text.Info(r, Pretty.separate(msgs.entries.map(_._2).toList)))
   455     }
   456   }
   457 
   458 
   459   /* tooltips */
   460 
   461   private def pretty_typing(kind: String, body: XML.Body): XML.Tree =
   462     Pretty.block(XML.Text(kind) :: Pretty.Break(1) :: body)
   463 
   464   private def timing_threshold: Double = options.real("jedit_timing_threshold")
   465 
   466   def tooltip(range: Text.Range): Option[Text.Info[XML.Body]] =
   467   {
   468     def add(prev: Text.Info[(Timing, Vector[(Boolean, XML.Tree)])],
   469       r0: Text.Range, p: (Boolean, XML.Tree)): Text.Info[(Timing, Vector[(Boolean, XML.Tree)])] =
   470     {
   471       val r = snapshot.convert(r0)
   472       val (t, info) = prev.info
   473       if (prev.range == r)
   474         Text.Info(r, (t, info :+ p))
   475       else Text.Info(r, (t, Vector(p)))
   476     }
   477 
   478     val results =
   479       snapshot.cumulate[Text.Info[(Timing, Vector[(Boolean, XML.Tree)])]](
   480         range, Text.Info(range, (Timing.zero, Vector.empty)), Rendering.tooltip_elements, _ =>
   481         {
   482           case (Text.Info(r, (t1, info)), Text.Info(_, XML.Elem(Markup.Timing(t2), _))) =>
   483             Some(Text.Info(r, (t1 + t2, info)))
   484           case (prev, Text.Info(r, XML.Elem(Markup.Entity(kind, name), _))) =>
   485             val kind1 = space_explode('_', kind).mkString(" ")
   486             val txt1 = kind1 + " " + quote(name)
   487             val t = prev.info._1
   488             val txt2 =
   489               if (kind == Markup.COMMAND && t.elapsed.seconds >= timing_threshold)
   490                 "\n" + t.message
   491               else ""
   492             Some(add(prev, r, (true, XML.Text(txt1 + txt2))))
   493           case (prev, Text.Info(r, XML.Elem(Markup.Path(name), _)))
   494           if Path.is_ok(name) =>
   495             val jedit_file = PIDE.thy_load.append(snapshot.node_name.master_dir, Path.explode(name))
   496             Some(add(prev, r, (true, XML.Text("file " + quote(jedit_file)))))
   497           case (prev, Text.Info(r, XML.Elem(Markup.Url(name), _))) =>
   498             Some(add(prev, r, (true, XML.Text("URL " + quote(name)))))
   499           case (prev, Text.Info(r, XML.Elem(Markup(name, _), body)))
   500           if name == Markup.SORTING || name == Markup.TYPING =>
   501             Some(add(prev, r, (true, pretty_typing("::", body))))
   502           case (prev, Text.Info(r, XML.Elem(Markup(Markup.ML_TYPING, _), body))) =>
   503             Some(add(prev, r, (false, pretty_typing("ML:", body))))
   504           case (prev, Text.Info(r, XML.Elem(Markup.Language(language, _, _), _))) =>
   505             Some(add(prev, r, (true, XML.Text("language: " + language))))
   506           case (prev, Text.Info(r, XML.Elem(Markup(name, _), _))) =>
   507             Rendering.tooltip_descriptions.get(name).
   508               map(descr => add(prev, r, (true, XML.Text(descr))))
   509         }).map(_.info)
   510 
   511     results.map(_.info).flatMap(res => res._2.toList) match {
   512       case Nil => None
   513       case tips =>
   514         val r = Text.Range(results.head.range.start, results.last.range.stop)
   515         val all_tips = (tips.filter(_._1) ++ tips.filter(!_._1).lastOption.toList).map(_._2)
   516         Some(Text.Info(r, Library.separate(Pretty.FBreak, all_tips)))
   517     }
   518   }
   519 
   520   def tooltip_margin: Int = options.int("jedit_tooltip_margin")
   521 
   522   lazy val tooltip_close_icon = JEdit_Lib.load_icon(options.string("tooltip_close_icon"))
   523   lazy val tooltip_detach_icon = JEdit_Lib.load_icon(options.string("tooltip_detach_icon"))
   524 
   525 
   526   /* gutter icons */
   527 
   528   private lazy val gutter_icons = Map(
   529     Rendering.information_pri -> JEdit_Lib.load_icon(options.string("gutter_information_icon")),
   530     Rendering.warning_pri -> JEdit_Lib.load_icon(options.string("gutter_warning_icon")),
   531     Rendering.legacy_pri -> JEdit_Lib.load_icon(options.string("gutter_legacy_icon")),
   532     Rendering.error_pri -> JEdit_Lib.load_icon(options.string("gutter_error_icon")))
   533 
   534   def gutter_message(range: Text.Range): Option[Icon] =
   535   {
   536     val results =
   537       snapshot.cumulate[Int](range, 0, Rendering.gutter_elements, _ =>
   538         {
   539           case (pri, Text.Info(_, XML.Elem(Markup(Markup.WRITELN, _),
   540               List(XML.Elem(Markup(Markup.INFORMATION, _), _))))) =>
   541             Some(pri max Rendering.information_pri)
   542           case (pri, Text.Info(_, XML.Elem(Markup(Markup.WARNING, _), body))) =>
   543             body match {
   544               case List(XML.Elem(Markup(Markup.LEGACY, _), _)) =>
   545                 Some(pri max Rendering.legacy_pri)
   546               case _ =>
   547                 Some(pri max Rendering.warning_pri)
   548             }
   549           case (pri, Text.Info(_, XML.Elem(Markup(Markup.ERROR, _), _))) =>
   550             Some(pri max Rendering.error_pri)
   551           case _ => None
   552         })
   553     val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
   554     gutter_icons.get(pri)
   555   }
   556 
   557 
   558   /* squiggly underline */
   559 
   560   private lazy val squiggly_colors = Map(
   561     Rendering.writeln_pri -> writeln_color,
   562     Rendering.information_pri -> information_color,
   563     Rendering.warning_pri -> warning_color,
   564     Rendering.error_pri -> error_color)
   565 
   566   def squiggly_underline(range: Text.Range): List[Text.Info[Color]] =
   567   {
   568     val results =
   569       snapshot.cumulate[Int](range, 0, Rendering.squiggly_elements, _ =>
   570         {
   571           case (pri, Text.Info(_, elem)) =>
   572             if (Protocol.is_information(elem))
   573               Some(pri max Rendering.information_pri)
   574             else
   575               Some(pri max Rendering.message_pri(elem.name))
   576         })
   577     for {
   578       Text.Info(r, pri) <- results
   579       color <- squiggly_colors.get(pri)
   580     } yield Text.Info(r, color)
   581   }
   582 
   583 
   584   /* message output */
   585 
   586   private lazy val message_colors = Map(
   587     Rendering.writeln_pri -> writeln_message_color,
   588     Rendering.information_pri -> information_message_color,
   589     Rendering.tracing_pri -> tracing_message_color,
   590     Rendering.warning_pri -> warning_message_color,
   591     Rendering.error_pri -> error_message_color)
   592 
   593   def line_background(range: Text.Range): Option[(Color, Boolean)] =
   594   {
   595     val results =
   596       snapshot.cumulate[Int](range, 0, Rendering.line_background_elements, _ =>
   597         {
   598           case (pri, Text.Info(_, elem)) =>
   599             if (elem.name == Markup.INFORMATION)
   600               Some(pri max Rendering.information_pri)
   601             else
   602               Some(pri max Rendering.message_pri(elem.name))
   603         })
   604     val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
   605 
   606     val is_separator =
   607       pri > 0 &&
   608       snapshot.cumulate[Boolean](range, false, Rendering.separator_elements, _ =>
   609         {
   610           case _ => Some(true)
   611         }).exists(_.info)
   612 
   613     message_colors.get(pri).map((_, is_separator))
   614   }
   615 
   616   def output_messages(st: Command.State): List[XML.Tree] =
   617     st.results.entries.map(_._2).filterNot(Protocol.is_result(_)).toList
   618 
   619 
   620   /* text background */
   621 
   622   def background1(range: Text.Range): List[Text.Info[Color]] =
   623   {
   624     if (snapshot.is_outdated) List(Text.Info(range, outdated_color))
   625     else
   626       for {
   627         Text.Info(r, result) <-
   628           snapshot.cumulate[(Option[Protocol.Status], Option[Color])](
   629             range, (Some(Protocol.Status.init), None), Rendering.background1_elements,
   630             command_state =>
   631               {
   632                 case (((Some(status), color), Text.Info(_, XML.Elem(markup, _))))
   633                 if (Protocol.command_status_elements(markup.name)) =>
   634                   Some((Some(Protocol.command_status(status, markup)), color))
   635                 case (_, Text.Info(_, XML.Elem(Markup(Markup.BAD, _), _))) =>
   636                   Some((None, Some(bad_color)))
   637                 case (_, Text.Info(_, XML.Elem(Markup(Markup.INTENSIFY, _), _))) =>
   638                   Some((None, Some(intensify_color)))
   639                 case (acc, Text.Info(_, Protocol.Dialog(_, serial, result))) =>
   640                   command_state.results.get(serial) match {
   641                     case Some(Protocol.Dialog_Result(res)) if res == result =>
   642                       Some((None, Some(active_result_color)))
   643                     case _ =>
   644                       Some((None, Some(active_color)))
   645                   }
   646                 case (_, Text.Info(_, elem)) =>
   647                   if (Rendering.active_elements(elem.name)) Some((None, Some(active_color)))
   648                   else None
   649               })
   650         color <-
   651           (result match {
   652             case (Some(status), opt_color) =>
   653               if (status.is_unprocessed) Some(unprocessed1_color)
   654               else if (status.is_running) Some(running1_color)
   655               else opt_color
   656             case (_, opt_color) => opt_color
   657           })
   658       } yield Text.Info(r, color)
   659   }
   660 
   661   def background2(range: Text.Range): List[Text.Info[Color]] =
   662     snapshot.select(range, Rendering.background2_elements, _ => _ => Some(light_color))
   663 
   664 
   665   /* text foreground */
   666 
   667   def foreground(range: Text.Range): List[Text.Info[Color]] =
   668     snapshot.select(range, Rendering.foreground_elements, _ =>
   669       {
   670         case Text.Info(_, elem) =>
   671           if (elem.name == Markup.ANTIQUOTED) Some(antiquoted_color) else Some(quoted_color)
   672       })
   673 
   674 
   675   /* text color */
   676 
   677   private lazy val text_colors: Map[String, Color] = Map(
   678       Markup.KEYWORD1 -> keyword1_color,
   679       Markup.KEYWORD2 -> keyword2_color,
   680       Markup.STRING -> Color.BLACK,
   681       Markup.ALTSTRING -> Color.BLACK,
   682       Markup.VERBATIM -> Color.BLACK,
   683       Markup.CARTOUCHE -> Color.BLACK,
   684       Markup.LITERAL -> keyword1_color,
   685       Markup.DELIMITER -> Color.BLACK,
   686       Markup.TFREE -> tfree_color,
   687       Markup.TVAR -> tvar_color,
   688       Markup.FREE -> free_color,
   689       Markup.SKOLEM -> skolem_color,
   690       Markup.BOUND -> bound_color,
   691       Markup.VAR -> var_color,
   692       Markup.INNER_STRING -> inner_quoted_color,
   693       Markup.INNER_CARTOUCHE -> inner_cartouche_color,
   694       Markup.INNER_COMMENT -> inner_comment_color,
   695       Markup.DYNAMIC_FACT -> dynamic_color,
   696       Markup.ANTIQUOTE -> antiquote_color,
   697       Markup.ML_KEYWORD1 -> keyword1_color,
   698       Markup.ML_KEYWORD2 -> keyword2_color,
   699       Markup.ML_KEYWORD3 -> keyword3_color,
   700       Markup.ML_DELIMITER -> Color.BLACK,
   701       Markup.ML_NUMERAL -> inner_numeral_color,
   702       Markup.ML_CHAR -> inner_quoted_color,
   703       Markup.ML_STRING -> inner_quoted_color,
   704       Markup.ML_COMMENT -> inner_comment_color)
   705 
   706   private lazy val text_color_elements = text_colors.keySet
   707 
   708   def text_color(range: Text.Range, color: Color): List[Text.Info[Color]] =
   709   {
   710     if (color == Token_Markup.hidden_color) List(Text.Info(range, color))
   711     else
   712       snapshot.cumulate(range, color, text_color_elements, _ =>
   713         {
   714           case (_, Text.Info(_, elem)) => text_colors.get(elem.name)
   715         })
   716   }
   717 
   718 
   719   /* virtual bullets */
   720 
   721   def bullet(range: Text.Range): List[Text.Info[Color]] =
   722     snapshot.select(range, Rendering.bullet_elements, _ => _ => Some(bullet_color))
   723 
   724 
   725   /* text folds */
   726 
   727   def fold_depth(range: Text.Range): List[Text.Info[Int]] =
   728     snapshot.cumulate[Int](range, 0, Rendering.fold_depth_elements, _ =>
   729       {
   730         case (depth, _) => Some(depth + 1)
   731       })
   732 }