/* Title: Tools/jEdit/src/graphview_dockable.scala
Author: Markus Kaiser, TU Muenchen
Author: Makarius
Dockable window for graphview.
*/
package isabelle.jedit
import isabelle._
import java.awt.BorderLayout
import javax.swing.{JPanel, JComponent}
import scala.actors.Actor._
import org.gjt.sp.jedit.View
class Graphview_Dockable(view: View, position: String) extends Dockable(view, position)
{
Swing_Thread.require()
/* component state -- owned by Swing thread */
private val do_update = true // FIXME
private var current_snapshot = Document.State.init.snapshot()
private var current_state = Command.empty.init_state
private var current_graph: XML.Body = Nil
/* GUI components */
private val graphview = new JPanel
// FIXME mutable GUI content
private def set_graphview(snapshot: Document.Snapshot, graph: XML.Body)
{
graphview.removeAll()
graphview.setLayout(new BorderLayout)
val panel =
new isabelle.graphview.Main_Panel(isabelle.graphview.Model.decode_graph(graph)) {
override def make_tooltip(parent: JComponent, x: Int, y: Int, body: XML.Body): String =
{
val rendering = Rendering(snapshot, PIDE.options.value)
new Pretty_Tooltip(view, parent, rendering, x, y, body)
null
}
}
graphview.add(panel.peer, BorderLayout.CENTER)
graphview.revalidate()
}
set_graphview(current_snapshot, current_graph)
set_content(graphview)
private def handle_update(follow: Boolean, restriction: Option[Set[Command]])
{
Swing_Thread.require()
val (new_snapshot, new_state) =
Document_View(view.getTextArea) match {
case Some(doc_view) =>
val snapshot = doc_view.model.snapshot()
if (follow && !snapshot.is_outdated) {
snapshot.node.command_at(doc_view.text_area.getCaretPosition).map(_._1) match {
case Some(cmd) =>
(snapshot, snapshot.state.command_state(snapshot.version, cmd))
case None =>
(Document.State.init.snapshot(), Command.empty.init_state)
}
}
else (current_snapshot, current_state)
case None => (current_snapshot, current_state)
}
val new_graph =
if (!restriction.isDefined || restriction.get.contains(new_state.command)) {
new_state.markup.cumulate[Option[XML.Body]](
new_state.command.range, None, Some(Set(Markup.GRAPHVIEW)),
{
case (_, Text.Info(_, XML.Elem(Markup(Markup.GRAPHVIEW, _), graph))) =>
Some(graph)
}).filter(_.info.isDefined) match {
case Text.Info(_, Some(graph)) #:: _ => graph
case _ => Nil
}
}
else current_graph
if (new_graph != current_graph) set_graphview(new_snapshot, new_graph)
current_snapshot = new_snapshot
current_state = new_state
current_graph = new_graph
}
/* main actor */
private val main_actor = actor {
loop {
react {
case _: Session.Global_Options => // FIXME
case changed: Session.Commands_Changed =>
Swing_Thread.later { handle_update(do_update, Some(changed.commands)) }
case Session.Caret_Focus =>
Swing_Thread.later { handle_update(do_update, None) }
case bad =>
java.lang.System.err.println("Graphview_Dockable: ignoring bad message " + bad)
}
}
}
override def init()
{
Swing_Thread.require()
PIDE.session.global_options += main_actor
PIDE.session.commands_changed += main_actor
PIDE.session.caret_focus += main_actor
handle_update(do_update, None)
}
override def exit()
{
Swing_Thread.require()
PIDE.session.global_options -= main_actor
PIDE.session.commands_changed -= main_actor
PIDE.session.caret_focus -= main_actor
}
}