src/Tools/jEdit/src/rendering.scala
author wenzelm
Mon Jan 14 23:08:40 2013 +0100 (2013-01-14)
changeset 50895 3a1edaa0dc6d
parent 50715 8cfd585b9162
child 51496 cb677987b7e3
permissions -rw-r--r--
more prominent status ticks;
is_running takes priority -- important to spot unstable parts that are re-run after edits;
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/*  Title:      Tools/jEdit/src/rendering.scala
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    Author:     Makarius
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Isabelle-specific implementation of quasi-abstract rendering and
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markup interpretation.
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*/
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package isabelle.jedit
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import isabelle._
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import java.awt.Color
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import javax.swing.Icon
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import org.gjt.sp.jedit.syntax.{Token => JEditToken}
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import org.gjt.sp.jedit.{jEdit, GUIUtilities}
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import scala.collection.immutable.SortedMap
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object Rendering
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{
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  def apply(snapshot: Document.Snapshot, options: Options): Rendering =
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    new Rendering(snapshot, options)
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  /* message priorities */
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  private val writeln_pri = 1
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  private val tracing_pri = 2
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  private val warning_pri = 3
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  private val legacy_pri = 4
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  private val error_pri = 5
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  private val message_pri = Map(
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    Markup.WRITELN -> writeln_pri, Markup.WRITELN_MESSAGE -> writeln_pri,
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    Markup.TRACING -> tracing_pri, Markup.TRACING_MESSAGE -> tracing_pri,
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    Markup.WARNING -> warning_pri, Markup.WARNING_MESSAGE -> warning_pri,
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    Markup.ERROR -> error_pri, Markup.ERROR_MESSAGE -> error_pri)
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  /* icons */
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  private def load_icon(name: String): Icon =
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  {
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    val icon = GUIUtilities.loadIcon(name)
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    if (icon.getIconWidth < 0 || icon.getIconHeight < 0) error("Bad icon: " + name)
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    else icon
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  }
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  private val gutter_icons = Map(
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    warning_pri -> load_icon("16x16/status/dialog-information.png"),
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    legacy_pri -> load_icon("16x16/status/dialog-warning.png"),
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    error_pri -> load_icon("16x16/status/dialog-error.png"))
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  val tooltip_close_icon = load_icon("16x16/actions/document-close.png")
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  val tooltip_detach_icon = load_icon("16x16/actions/window-new.png")
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  /* jEdit font */
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  def font_family(): String = jEdit.getProperty("view.font")
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  def font_size(scale: String): Float =
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    (jEdit.getIntegerProperty("view.fontsize", 16) * PIDE.options.real(scale)).toFloat
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  /* token markup -- text styles */
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  private val command_style: Map[String, Byte] =
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  {
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    import JEditToken._
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    Map[String, Byte](
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      Keyword.THY_END -> KEYWORD2,
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      Keyword.THY_SCRIPT -> LABEL,
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      Keyword.PRF_SCRIPT -> DIGIT,
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      Keyword.PRF_ASM -> KEYWORD3,
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      Keyword.PRF_ASM_GOAL -> KEYWORD3
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    ).withDefaultValue(KEYWORD1)
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  }
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  private val token_style: Map[Token.Kind.Value, Byte] =
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  {
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    import JEditToken._
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    Map[Token.Kind.Value, Byte](
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      Token.Kind.KEYWORD -> KEYWORD2,
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      Token.Kind.IDENT -> NULL,
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      Token.Kind.LONG_IDENT -> NULL,
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      Token.Kind.SYM_IDENT -> NULL,
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      Token.Kind.VAR -> NULL,
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      Token.Kind.TYPE_IDENT -> NULL,
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      Token.Kind.TYPE_VAR -> NULL,
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      Token.Kind.NAT -> NULL,
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      Token.Kind.FLOAT -> NULL,
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      Token.Kind.STRING -> LITERAL1,
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      Token.Kind.ALT_STRING -> LITERAL2,
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      Token.Kind.VERBATIM -> COMMENT3,
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      Token.Kind.SPACE -> NULL,
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      Token.Kind.COMMENT -> COMMENT1,
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      Token.Kind.ERROR -> INVALID
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    ).withDefaultValue(NULL)
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  }
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  def token_markup(syntax: Outer_Syntax, token: Token): Byte =
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    if (token.is_command) command_style(syntax.keyword_kind(token.content).getOrElse(""))
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    else if (token.is_operator) JEditToken.OPERATOR
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    else token_style(token.kind)
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}
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class Rendering private(val snapshot: Document.Snapshot, val options: Options)
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{
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  /* colors */
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  def color_value(s: String): Color = Color_Value(options.string(s))
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  val outdated_color = color_value("outdated_color")
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  val unprocessed_color = color_value("unprocessed_color")
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  val unprocessed1_color = color_value("unprocessed1_color")
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  val running_color = color_value("running_color")
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  val running1_color = color_value("running1_color")
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  val light_color = color_value("light_color")
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  val tooltip_color = color_value("tooltip_color")
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  val writeln_color = color_value("writeln_color")
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  val warning_color = color_value("warning_color")
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  val error_color = color_value("error_color")
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  val error1_color = color_value("error1_color")
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  val writeln_message_color = color_value("writeln_message_color")
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  val tracing_message_color = color_value("tracing_message_color")
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  val warning_message_color = color_value("warning_message_color")
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  val error_message_color = color_value("error_message_color")
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  val bad_color = color_value("bad_color")
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  val intensify_color = color_value("intensify_color")
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  val quoted_color = color_value("quoted_color")
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  val highlight_color = color_value("highlight_color")
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  val hyperlink_color = color_value("hyperlink_color")
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  val active_color = color_value("active_color")
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  val active_hover_color = color_value("active_hover_color")
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  val active_result_color = color_value("active_result_color")
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  val keyword1_color = color_value("keyword1_color")
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  val keyword2_color = color_value("keyword2_color")
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  val tfree_color = color_value("tfree_color")
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  val tvar_color = color_value("tvar_color")
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  val free_color = color_value("free_color")
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  val skolem_color = color_value("skolem_color")
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  val bound_color = color_value("bound_color")
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  val var_color = color_value("var_color")
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  val inner_numeral_color = color_value("inner_numeral_color")
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  val inner_quoted_color = color_value("inner_quoted_color")
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  val inner_comment_color = color_value("inner_comment_color")
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  val antiquotation_color = color_value("antiquotation_color")
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  val dynamic_color = color_value("dynamic_color")
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  /* command overview */
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  val overview_limit = options.int("jedit_text_overview_limit")
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  private val overview_include = Protocol.command_status_markup + Markup.WARNING + Markup.ERROR
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  def overview_color(range: Text.Range): Option[Color] =
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  {
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    if (snapshot.is_outdated) None
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    else {
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      val results =
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        snapshot.cumulate_markup[(Protocol.Status, Int)](
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          range, (Protocol.Status.init, 0), Some(overview_include), _ =>
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          {
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            case ((status, pri), Text.Info(_, XML.Elem(markup, _)))
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            if overview_include(markup.name) =>
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              if (markup.name == Markup.WARNING || markup.name == Markup.ERROR)
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                (status, pri max Rendering.message_pri(markup.name))
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              else (Protocol.command_status(status, markup), pri)
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          })
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      if (results.isEmpty) None
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      else {
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        val (status, pri) =
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          ((Protocol.Status.init, 0) /: results) {
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            case ((s1, p1), Text.Info(_, (s2, p2))) => (s1 + s2, p1 max p2) }
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        if (status.is_running) Some(running_color)
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        else if (pri == Rendering.warning_pri) Some(warning_color)
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        else if (pri == Rendering.error_pri) Some(error_color)
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        else if (status.is_unprocessed) Some(unprocessed_color)
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        else if (status.is_failed) Some(error_color)
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        else None
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      }
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    }
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  }
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  /* markup selectors */
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  private val highlight_include =
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    Set(Markup.SORT, Markup.TYP, Markup.TERM, Markup.PROP, Markup.ML_TYPING, Markup.TOKEN_RANGE,
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      Markup.ENTITY, Markup.PATH, Markup.SORTING, Markup.TYPING, Markup.FREE, Markup.SKOLEM,
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      Markup.BOUND, Markup.VAR, Markup.TFREE, Markup.TVAR, Markup.ML_SOURCE, Markup.DOCUMENT_SOURCE)
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  def highlight(range: Text.Range): Option[Text.Info[Color]] =
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  {
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    snapshot.select_markup(range, Some(highlight_include), _ =>
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        {
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          case Text.Info(info_range, XML.Elem(Markup(name, _), _)) if highlight_include(name) =>
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            Text.Info(snapshot.convert(info_range), highlight_color)
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        }) match { case Text.Info(_, info) #:: _ => Some(info) case _ => None }
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  }
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  private val hyperlink_include = Set(Markup.ENTITY, Markup.PATH)
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  def hyperlink(range: Text.Range): Option[Text.Info[Hyperlink]] =
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  {
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    snapshot.cumulate_markup[List[Text.Info[Hyperlink]]](range, Nil, Some(hyperlink_include), _ =>
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        {
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          case (links, Text.Info(info_range, XML.Elem(Markup.Path(name), _)))
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          if Path.is_ok(name) =>
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            val jedit_file = PIDE.thy_load.append(snapshot.node_name.dir, Path.explode(name))
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            Text.Info(snapshot.convert(info_range), Hyperlink(jedit_file, 0, 0)) :: links
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          case (links, Text.Info(info_range, XML.Elem(Markup(Markup.ENTITY, props), _)))
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          if !props.exists(
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            { case (Markup.KIND, Markup.ML_OPEN) => true
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              case (Markup.KIND, Markup.ML_STRUCT) => true
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              case _ => false }) =>
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            props match {
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              case Position.Def_Line_File(line, name) if Path.is_ok(name) =>
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                Isabelle_System.source_file(Path.explode(name)) match {
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                  case Some(path) =>
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                    val jedit_file = Isabelle_System.platform_path(path)
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                    Text.Info(snapshot.convert(info_range), Hyperlink(jedit_file, line, 0)) :: links
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                  case None => links
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                }
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              case Position.Def_Id_Offset(id, offset) =>
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                snapshot.state.find_command(snapshot.version, id) match {
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                  case Some((node, command)) =>
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                    val sources =
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                      node.commands.iterator.takeWhile(_ != command).map(_.source) ++
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                        Iterator.single(command.source(Text.Range(0, command.decode(offset))))
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                    val (line, column) = ((1, 1) /: sources)(Symbol.advance_line_column)
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                    Text.Info(snapshot.convert(info_range),
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                      Hyperlink(command.node_name.node, line, column)) :: links
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                  case None => links
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                }
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              case _ => links
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            }
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        }) match { case Text.Info(_, info :: _) #:: _ => Some(info) case _ => None }
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  }
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  private val active_include =
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    Set(Markup.BROWSER, Markup.GRAPHVIEW, Markup.SENDBACK, Markup.DIALOG)
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  def active(range: Text.Range): Option[Text.Info[XML.Elem]] =
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    snapshot.select_markup(range, Some(active_include), command_state =>
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        {
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          case Text.Info(info_range, elem @ Protocol.Dialog(_, serial, _))
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          if !command_state.results.defined(serial) =>
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            Text.Info(snapshot.convert(info_range), elem)
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          case Text.Info(info_range, elem @ XML.Elem(Markup(name, _), _))
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          if name == Markup.BROWSER || name == Markup.GRAPHVIEW || name == Markup.SENDBACK =>
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            Text.Info(snapshot.convert(info_range), elem)
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        }) match { case Text.Info(_, info) #:: _ => Some(info) case _ => None }
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  def command_results(range: Text.Range): Command.Results =
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  {
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    val results =
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      snapshot.select_markup[Command.Results](range, None, command_state =>
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        { case _ => command_state.results }).map(_.info)
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    (Command.Results.empty /: results)(_ ++ _)
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  }
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  def tooltip_message(range: Text.Range): XML.Body =
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  {
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    val msgs =
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      Command.Results.merge(
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        snapshot.cumulate_markup[Command.Results](range, Command.Results.empty,
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          Some(Set(Markup.WRITELN, Markup.WARNING, Markup.ERROR, Markup.BAD)), _ =>
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          {
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            case (msgs, Text.Info(_, XML.Elem(Markup(name, props @ Markup.Serial(serial)), body)))
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            if name == Markup.WRITELN ||
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                name == Markup.WARNING ||
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                name == Markup.ERROR =>
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              msgs + (serial -> XML.Elem(Markup(Markup.message(name), props), body))
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            case (msgs, Text.Info(_, msg @ XML.Elem(Markup(Markup.BAD, _), body)))
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            if !body.isEmpty => msgs + (Document.new_id() -> msg)
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          }).map(_.info))
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    Pretty.separate(msgs.entries.map(_._2).toList)
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  }
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  private val tooltips: Map[String, String] =
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    Map(
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      Markup.SORT -> "sort",
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      Markup.TYP -> "type",
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      Markup.TERM -> "term",
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      Markup.PROP -> "proposition",
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      Markup.TOKEN_RANGE -> "inner syntax token",
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      Markup.FREE -> "free variable",
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      Markup.SKOLEM -> "skolem variable",
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      Markup.BOUND -> "bound variable",
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      Markup.VAR -> "schematic variable",
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      Markup.TFREE -> "free type variable",
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      Markup.TVAR -> "schematic type variable",
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      Markup.ML_SOURCE -> "ML source",
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      Markup.DOCUMENT_SOURCE -> "document source")
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  private val tooltip_elements =
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    Set(Markup.ENTITY, Markup.SORTING, Markup.TYPING, Markup.ML_TYPING, Markup.PATH) ++
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      tooltips.keys
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  private def pretty_typing(kind: String, body: XML.Body): XML.Tree =
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    Pretty.block(XML.Text(kind) :: Pretty.Break(1) :: body)
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  def tooltip(range: Text.Range): XML.Body =
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  {
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    def add(prev: Text.Info[List[(Boolean, XML.Tree)]], r: Text.Range, p: (Boolean, XML.Tree)) =
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      if (prev.range == r) Text.Info(r, p :: prev.info) else Text.Info(r, List(p))
wenzelm@49356
   324
wenzelm@49356
   325
    val tips =
wenzelm@49700
   326
      snapshot.cumulate_markup[Text.Info[(List[(Boolean, XML.Tree)])]](
wenzelm@50500
   327
        range, Text.Info(range, Nil), Some(tooltip_elements), _ =>
wenzelm@49356
   328
        {
wenzelm@50201
   329
          case (prev, Text.Info(r, XML.Elem(Markup.Entity(kind, name), _))) =>
wenzelm@49356
   330
            val kind1 = space_explode('_', kind).mkString(" ")
wenzelm@49700
   331
            add(prev, r, (true, XML.Text(kind1 + " " + quote(name))))
wenzelm@50201
   332
          case (prev, Text.Info(r, XML.Elem(Markup.Path(name), _)))
wenzelm@49356
   333
          if Path.is_ok(name) =>
wenzelm@50205
   334
            val jedit_file = PIDE.thy_load.append(snapshot.node_name.dir, Path.explode(name))
wenzelm@49700
   335
            add(prev, r, (true, XML.Text("file " + quote(jedit_file))))
wenzelm@49674
   336
          case (prev, Text.Info(r, XML.Elem(Markup(name, _), body)))
wenzelm@50201
   337
          if name == Markup.SORTING || name == Markup.TYPING =>
wenzelm@49700
   338
            add(prev, r, (true, pretty_typing("::", body)))
wenzelm@50201
   339
          case (prev, Text.Info(r, XML.Elem(Markup(Markup.ML_TYPING, _), body))) =>
wenzelm@49700
   340
            add(prev, r, (false, pretty_typing("ML:", body)))
wenzelm@49356
   341
          case (prev, Text.Info(r, XML.Elem(Markup(name, _), _)))
wenzelm@49700
   342
          if tooltips.isDefinedAt(name) => add(prev, r, (true, XML.Text(tooltips(name))))
wenzelm@49356
   343
        }).toList.flatMap(_.info.info)
wenzelm@49356
   344
wenzelm@49356
   345
    val all_tips =
wenzelm@49356
   346
      (tips.filter(_._1) ++ tips.filter(!_._1).lastOption.toList).map(_._2)
wenzelm@49700
   347
    Library.separate(Pretty.FBreak, all_tips.toList)
wenzelm@49356
   348
  }
wenzelm@49356
   349
wenzelm@50554
   350
  val tooltip_margin: Int = options.int("jedit_tooltip_margin")
wenzelm@50554
   351
  val tooltip_bounds: Double = (options.real("jedit_tooltip_bounds") max 0.2) min 0.8
wenzelm@50554
   352
wenzelm@49356
   353
wenzelm@49356
   354
  def gutter_message(range: Text.Range): Option[Icon] =
wenzelm@49356
   355
  {
wenzelm@49356
   356
    val results =
wenzelm@50500
   357
      snapshot.cumulate_markup[Int](range, 0, Some(Set(Markup.WARNING, Markup.ERROR)), _ =>
wenzelm@49356
   358
        {
wenzelm@50201
   359
          case (pri, Text.Info(_, XML.Elem(Markup(Markup.WARNING, _), body))) =>
wenzelm@49356
   360
            body match {
wenzelm@50201
   361
              case List(XML.Elem(Markup(Markup.LEGACY, _), _)) =>
wenzelm@50199
   362
                pri max Rendering.legacy_pri
wenzelm@50199
   363
              case _ => pri max Rendering.warning_pri
wenzelm@49356
   364
            }
wenzelm@50201
   365
          case (pri, Text.Info(_, XML.Elem(Markup(Markup.ERROR, _), _))) =>
wenzelm@50199
   366
            pri max Rendering.error_pri
wenzelm@49356
   367
        })
wenzelm@49356
   368
    val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
wenzelm@50199
   369
    Rendering.gutter_icons.get(pri)
wenzelm@49356
   370
  }
wenzelm@49356
   371
wenzelm@49356
   372
wenzelm@49356
   373
  private val squiggly_colors = Map(
wenzelm@50199
   374
    Rendering.writeln_pri -> writeln_color,
wenzelm@50199
   375
    Rendering.warning_pri -> warning_color,
wenzelm@50199
   376
    Rendering.error_pri -> error_color)
wenzelm@49356
   377
wenzelm@49356
   378
  def squiggly_underline(range: Text.Range): Stream[Text.Info[Color]] =
wenzelm@49356
   379
  {
wenzelm@49356
   380
    val results =
wenzelm@49356
   381
      snapshot.cumulate_markup[Int](range, 0,
wenzelm@50500
   382
        Some(Set(Markup.WRITELN, Markup.WARNING, Markup.ERROR)), _ =>
wenzelm@49356
   383
        {
wenzelm@49474
   384
          case (pri, Text.Info(_, XML.Elem(Markup(name, _), _)))
wenzelm@50201
   385
          if name == Markup.WRITELN ||
wenzelm@50201
   386
            name == Markup.WARNING ||
wenzelm@50201
   387
            name == Markup.ERROR => pri max Rendering.message_pri(name)
wenzelm@49356
   388
        })
wenzelm@49356
   389
    for {
wenzelm@49356
   390
      Text.Info(r, pri) <- results
wenzelm@49356
   391
      color <- squiggly_colors.get(pri)
wenzelm@49356
   392
    } yield Text.Info(r, color)
wenzelm@49356
   393
  }
wenzelm@49356
   394
wenzelm@49474
   395
wenzelm@49493
   396
  private val messages_include =
wenzelm@50201
   397
    Set(Markup.WRITELN_MESSAGE, Markup.TRACING_MESSAGE, Markup.WARNING_MESSAGE, Markup.ERROR_MESSAGE)
wenzelm@49493
   398
wenzelm@49474
   399
  private val message_colors = Map(
wenzelm@50199
   400
    Rendering.writeln_pri -> writeln_message_color,
wenzelm@50199
   401
    Rendering.tracing_pri -> tracing_message_color,
wenzelm@50199
   402
    Rendering.warning_pri -> warning_message_color,
wenzelm@50199
   403
    Rendering.error_pri -> error_message_color)
wenzelm@49474
   404
wenzelm@49473
   405
  def line_background(range: Text.Range): Option[(Color, Boolean)] =
wenzelm@49473
   406
  {
wenzelm@49474
   407
    val results =
wenzelm@50500
   408
      snapshot.cumulate_markup[Int](range, 0, Some(messages_include), _ =>
wenzelm@49473
   409
        {
wenzelm@49474
   410
          case (pri, Text.Info(_, XML.Elem(Markup(name, _), _)))
wenzelm@50201
   411
          if name == Markup.WRITELN_MESSAGE ||
wenzelm@50201
   412
            name == Markup.TRACING_MESSAGE ||
wenzelm@50201
   413
            name == Markup.WARNING_MESSAGE ||
wenzelm@50201
   414
            name == Markup.ERROR_MESSAGE => pri max Rendering.message_pri(name)
wenzelm@49474
   415
        })
wenzelm@49474
   416
    val pri = (0 /: results) { case (p1, Text.Info(_, p2)) => p1 max p2 }
wenzelm@49474
   417
wenzelm@49474
   418
    val is_separator = pri > 0 &&
wenzelm@50500
   419
      snapshot.cumulate_markup[Boolean](range, false, Some(Set(Markup.SEPARATOR)), _ =>
wenzelm@49473
   420
        {
wenzelm@50201
   421
          case (_, Text.Info(_, XML.Elem(Markup(Markup.SEPARATOR, _), _))) => true
wenzelm@49473
   422
        }).exists(_.info)
wenzelm@49473
   423
wenzelm@49474
   424
    message_colors.get(pri).map((_, is_separator))
wenzelm@49473
   425
  }
wenzelm@49356
   426
wenzelm@49492
   427
wenzelm@50500
   428
  def output_messages(st: Command.State): List[XML.Tree] =
wenzelm@50500
   429
  {
wenzelm@50507
   430
    st.results.entries.map(_._2).filterNot(Protocol.is_result(_)).toList
wenzelm@50500
   431
  }
wenzelm@50500
   432
wenzelm@50500
   433
wenzelm@49492
   434
  private val background1_include =
wenzelm@50201
   435
    Protocol.command_status_markup + Markup.WRITELN_MESSAGE + Markup.TRACING_MESSAGE +
wenzelm@50500
   436
      Markup.WARNING_MESSAGE + Markup.ERROR_MESSAGE + Markup.BAD + Markup.INTENSIFY ++
wenzelm@50500
   437
      active_include
wenzelm@49492
   438
wenzelm@49356
   439
  def background1(range: Text.Range): Stream[Text.Info[Color]] =
wenzelm@49356
   440
  {
wenzelm@49356
   441
    if (snapshot.is_outdated) Stream(Text.Info(range, outdated_color))
wenzelm@49356
   442
    else
wenzelm@49356
   443
      for {
wenzelm@49356
   444
        Text.Info(r, result) <-
wenzelm@50500
   445
          snapshot.cumulate_markup[(Option[Protocol.Status], Option[Color])](
wenzelm@50500
   446
            range, (Some(Protocol.Status.init), None), Some(background1_include), command_state =>
wenzelm@49356
   447
            {
wenzelm@50500
   448
              case (((Some(status), color), Text.Info(_, XML.Elem(markup, _))))
wenzelm@49356
   449
              if (Protocol.command_status_markup(markup.name)) =>
wenzelm@50500
   450
                (Some(Protocol.command_status(status, markup)), color)
wenzelm@50500
   451
              case (_, Text.Info(_, XML.Elem(Markup(Markup.BAD, _), _))) =>
wenzelm@50500
   452
                (None, Some(bad_color))
wenzelm@50500
   453
              case (_, Text.Info(_, XML.Elem(Markup(Markup.INTENSIFY, _), _))) =>
wenzelm@50500
   454
                (None, Some(intensify_color))
wenzelm@50501
   455
              case (acc, Text.Info(_, elem @ XML.Elem(Markup(Markup.DIALOG, _), _))) =>
wenzelm@50501
   456
                // FIXME pattern match problem in scala-2.9.2 (!??)
wenzelm@50501
   457
                elem match {
wenzelm@50501
   458
                  case Protocol.Dialog(_, serial, result) =>
wenzelm@50501
   459
                    command_state.results.get(serial) match {
wenzelm@50501
   460
                      case Some(Protocol.Dialog_Result(res)) if res == result =>
wenzelm@50501
   461
                        (None, Some(active_result_color))
wenzelm@50501
   462
                      case _ =>
wenzelm@50501
   463
                        (None, Some(active_color))
wenzelm@50501
   464
                    }
wenzelm@50501
   465
                  case _ => acc
wenzelm@50500
   466
                }
wenzelm@50500
   467
              case (_, Text.Info(_, XML.Elem(markup, _))) if active_include(markup.name) =>
wenzelm@50500
   468
                (None, Some(active_color))
wenzelm@49356
   469
            })
wenzelm@49356
   470
        color <-
wenzelm@49356
   471
          (result match {
wenzelm@50500
   472
            case (Some(status), opt_color) =>
wenzelm@49356
   473
              if (status.is_unprocessed) Some(unprocessed1_color)
wenzelm@49356
   474
              else if (status.is_running) Some(running1_color)
wenzelm@49356
   475
              else opt_color
wenzelm@50500
   476
            case (_, opt_color) => opt_color
wenzelm@49356
   477
          })
wenzelm@49356
   478
      } yield Text.Info(r, color)
wenzelm@49356
   479
  }
wenzelm@49356
   480
wenzelm@49356
   481
wenzelm@49356
   482
  def background2(range: Text.Range): Stream[Text.Info[Color]] =
wenzelm@50500
   483
    snapshot.select_markup(range, Some(Set(Markup.TOKEN_RANGE)), _ =>
wenzelm@49356
   484
      {
wenzelm@50201
   485
        case Text.Info(_, XML.Elem(Markup(Markup.TOKEN_RANGE, _), _)) => light_color
wenzelm@49356
   486
      })
wenzelm@49356
   487
wenzelm@49356
   488
wenzelm@49356
   489
  def foreground(range: Text.Range): Stream[Text.Info[Color]] =
wenzelm@50500
   490
    snapshot.select_markup(range, Some(Set(Markup.STRING, Markup.ALTSTRING, Markup.VERBATIM)), _ =>
wenzelm@49356
   491
      {
wenzelm@50201
   492
        case Text.Info(_, XML.Elem(Markup(Markup.STRING, _), _)) => quoted_color
wenzelm@50201
   493
        case Text.Info(_, XML.Elem(Markup(Markup.ALTSTRING, _), _)) => quoted_color
wenzelm@50201
   494
        case Text.Info(_, XML.Elem(Markup(Markup.VERBATIM, _), _)) => quoted_color
wenzelm@49356
   495
      })
wenzelm@49356
   496
wenzelm@49356
   497
wenzelm@49356
   498
  private val text_colors: Map[String, Color] = Map(
wenzelm@50201
   499
      Markup.KEYWORD1 -> keyword1_color,
wenzelm@50201
   500
      Markup.KEYWORD2 -> keyword2_color,
wenzelm@50201
   501
      Markup.STRING -> Color.BLACK,
wenzelm@50201
   502
      Markup.ALTSTRING -> Color.BLACK,
wenzelm@50201
   503
      Markup.VERBATIM -> Color.BLACK,
wenzelm@50201
   504
      Markup.LITERAL -> keyword1_color,
wenzelm@50201
   505
      Markup.DELIMITER -> Color.BLACK,
wenzelm@50201
   506
      Markup.TFREE -> tfree_color,
wenzelm@50201
   507
      Markup.TVAR -> tvar_color,
wenzelm@50201
   508
      Markup.FREE -> free_color,
wenzelm@50201
   509
      Markup.SKOLEM -> skolem_color,
wenzelm@50201
   510
      Markup.BOUND -> bound_color,
wenzelm@50201
   511
      Markup.VAR -> var_color,
wenzelm@50201
   512
      Markup.INNER_STRING -> inner_quoted_color,
wenzelm@50201
   513
      Markup.INNER_COMMENT -> inner_comment_color,
wenzelm@50201
   514
      Markup.DYNAMIC_FACT -> dynamic_color,
wenzelm@50201
   515
      Markup.ML_KEYWORD -> keyword1_color,
wenzelm@50201
   516
      Markup.ML_DELIMITER -> Color.BLACK,
wenzelm@50201
   517
      Markup.ML_NUMERAL -> inner_numeral_color,
wenzelm@50201
   518
      Markup.ML_CHAR -> inner_quoted_color,
wenzelm@50201
   519
      Markup.ML_STRING -> inner_quoted_color,
wenzelm@50201
   520
      Markup.ML_COMMENT -> inner_comment_color,
wenzelm@50201
   521
      Markup.ANTIQ -> antiquotation_color)
wenzelm@49356
   522
wenzelm@49356
   523
  private val text_color_elements = Set.empty[String] ++ text_colors.keys
wenzelm@49356
   524
wenzelm@49356
   525
  def text_color(range: Text.Range, color: Color)
wenzelm@49356
   526
      : Stream[Text.Info[Color]] =
wenzelm@49356
   527
  {
wenzelm@50196
   528
    if (color == Token_Markup.hidden_color) Stream(Text.Info(range, color))
wenzelm@50196
   529
    else
wenzelm@50500
   530
      snapshot.cumulate_markup(range, color, Some(text_color_elements), _ =>
wenzelm@50196
   531
        {
wenzelm@50196
   532
          case (_, Text.Info(_, XML.Elem(Markup(m, _), _)))
wenzelm@50196
   533
          if text_colors.isDefinedAt(m) => text_colors(m)
wenzelm@50196
   534
        })
wenzelm@49356
   535
  }
wenzelm@50542
   536
wenzelm@50542
   537
wenzelm@50542
   538
  /* nested text structure -- folds */
wenzelm@50542
   539
wenzelm@50545
   540
  private val fold_depth_include = Set(Markup.TEXT_FOLD, Markup.GOAL, Markup.SUBGOAL)
wenzelm@50542
   541
wenzelm@50542
   542
  def fold_depth(range: Text.Range): Stream[Text.Info[Int]] =
wenzelm@50542
   543
    snapshot.cumulate_markup[Int](range, 0, Some(fold_depth_include), _ =>
wenzelm@50542
   544
      {
wenzelm@50542
   545
        case (depth, Text.Info(_, XML.Elem(Markup(name, _), _)))
wenzelm@50542
   546
        if fold_depth_include(name) => depth + 1
wenzelm@50542
   547
      })
wenzelm@49356
   548
}