Quelle simplifier_trace_dockable.scala Sprache: Scala

/*  Title:      Tools/jEdit/src/simplifier_trace_dockable.scala
    Author:     Lars Hupel

Dockable window with interactive simplifier trace.
*/

package isabelle.jedit

import isabelle._

import scala.swing.{Orientation, Separator}

import java.awt.BorderLayout

import org.gjt.sp.jedit.View

class Simplifier_Trace_Dockable(view: View, position: String) extends Dockable(view, position) {
  dockable =>

  GUI_Thread.require {}

  /* component state -- owned by GUI thread */

  private var current_snapshot = Document.State.init.snapshot()
  private var current_command = Command.empty
  private var current_results = Command.Results.empty
  private var current_id = 0L
  private var do_update = true

  private val output: Output_Area = new Output_Area(view)

  output.setup(dockable)
  set_content(output.text_pane)

  private def update_contents(): Unit = {
    val snapshot = current_snapshot
    val context = Simplifier_Trace.handle_results(PIDE.session, current_id, current_results)

    answers.contents.clear()
    context.questions.values.toList match {
      case q :: _ =>
        val data = q.data
        output.pretty_text_area.update(snapshot, Command.Results.empty,
          List(Pretty.block(XML.Text(data.text) :: data.content, indent = 0)))
        q.answers.foreach { answer =>
          answers.contents += new GUI.Button(answer.string) {
            override def clicked(): Unit =
              Simplifier_Trace.send_reply(PIDE.session, data.serial, answer)
          }
        }
      case Nil =>
        output.pretty_text_area.update(snapshot, Command.Results.empty, Nil)
    }

    output.handle_resize()
  }

  private def show_trace(): Unit = {
    val trace = Simplifier_Trace.generate_trace(PIDE.session, current_results)
    new Simplifier_Trace_Window(view, current_snapshot, trace)
  }

  private def handle_update(follow: Boolean): Unit = {
    val (new_snapshot, new_command, new_results, new_id) =
      PIDE.editor.current_node_snapshot(view) match {
        case Some(snapshot) =>
          if (follow && !snapshot.is_outdated) {
            PIDE.editor.current_command(view, snapshot) match {
              case Some(cmd) =>
                (snapshot, cmd, snapshot.command_results(cmd), cmd.id)
              case None =>
                (Document.State.init.snapshot(), Command.empty, Command.Results.empty, 0L)
            }
          }
          else (current_snapshot, current_command, current_results, current_id)
        case None => (current_snapshot, current_command, current_results, current_id)
      }

    current_snapshot = new_snapshot
    current_command = new_command
    current_results = new_results
    current_id = new_id
    update_contents()
  }

  /* main */

  private val main =
    Session.Consumer[Any](getClass.getName) {
      case _: Session.Global_Options =>
        GUI_Thread.later { output.handle_resize() }

      case changed: Session.Commands_Changed =>
        GUI_Thread.later { handle_update(do_update) }

      case Session.Caret_Focus =>
        GUI_Thread.later { handle_update(do_update) }

      case Simplifier_Trace.Event =>
        GUI_Thread.later { handle_update(do_update) }
    }

  override def init(): Unit = {
    PIDE.session.global_options += main
    PIDE.session.commands_changed += main
    PIDE.session.caret_focus += main
    PIDE.session.trace_events += main
    output.init()
    handle_update(true)
  }

  override def exit(): Unit = {
    PIDE.session.global_options -= main
    PIDE.session.commands_changed -= main
    PIDE.session.caret_focus -= main
    PIDE.session.trace_events -= main
    output.exit()
  }

  /* controls */

  private val controls =
    Wrap_Panel(
      List(
        new GUI.Check("Auto update", init = do_update) {
          override def clicked(state: Boolean): Unit = {
            do_update = state
            handle_update(do_update)
          }
        },
        new GUI.Button("Update") { override def clicked(): Unit = handle_update(true) },
        new Separator(Orientation.Vertical),
        new GUI.Button("Show trace") { override def clicked(): Unit = show_trace() },
        new GUI.Button("Clear memory") {
          override def clicked(): Unit = Simplifier_Trace.clear_memory(PIDE.session)
        }))

  private val answers = Wrap_Panel(Nil, Wrap_Panel.Alignment.Left)

  add(controls.peer, BorderLayout.NORTH)
  add(answers.peer, BorderLayout.SOUTH)
}

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