more explicit treatment of Swing thread context;
Document_Model.snapshot: require Swing thread;
/* Title: Tools/jEdit/src/jedit/output_dockable.scala
Author: Makarius
Dockable window with result message output.
*/
package isabelle.jedit
import isabelle._
import scala.actors.Actor._
import scala.swing.{FlowPanel, Button, CheckBox}
import scala.swing.event.ButtonClicked
import java.awt.BorderLayout
import java.awt.event.{ComponentEvent, ComponentAdapter}
import org.gjt.sp.jedit.View
class Output_Dockable(view: View, position: String) extends Dockable(view, position)
{
Swing_Thread.require()
val html_panel =
new HTML_Panel(Isabelle.system, Isabelle.font_family(), scala.math.round(Isabelle.font_size()))
add(html_panel, BorderLayout.CENTER)
/* component state -- owned by Swing thread */
private var zoom_factor = 100
private var show_debug = false
private var show_tracing = false
private var follow_caret = true
private var current_command: Option[Command] = None
private def handle_resize()
{
Swing_Thread.now {
html_panel.resize(Isabelle.font_family(),
scala.math.round(Isabelle.font_size() * zoom_factor / 100))
}
}
private def handle_perspective(): Boolean =
Swing_Thread.now {
Document_View(view.getTextArea) match {
case Some(doc_view) =>
val cmd = doc_view.selected_command()
if (current_command == cmd) false
else { current_command = cmd; true }
case None => false
}
}
private def handle_update(restriction: Option[Set[Command]] = None)
{
Swing_Thread.now {
if (follow_caret) handle_perspective()
Document_View(view.getTextArea) match {
case Some(doc_view) =>
current_command match {
case Some(cmd) if !restriction.isDefined || restriction.get.contains(cmd) =>
val snapshot = doc_view.model.snapshot()
val filtered_results =
snapshot.document.current_state(cmd).results filter {
case XML.Elem(Markup.TRACING, _, _) => show_tracing
case XML.Elem(Markup.DEBUG, _, _) => show_debug
case _ => true
}
html_panel.render(filtered_results)
case _ =>
}
case None =>
}
}
}
/* main actor */
private val main_actor = actor {
loop {
react {
case Session.Global_Settings => handle_resize()
case Command_Set(changed) => handle_update(Some(changed))
case Session.Perspective => if (follow_caret && handle_perspective()) handle_update()
case bad => System.err.println("Output_Dockable: ignoring bad message " + bad)
}
}
}
override def init()
{
Isabelle.session.global_settings += main_actor
Isabelle.session.commands_changed += main_actor
Isabelle.session.perspective += main_actor
}
override def exit()
{
Isabelle.session.global_settings -= main_actor
Isabelle.session.commands_changed -= main_actor
Isabelle.session.perspective -= main_actor
}
/* resize */
addComponentListener(new ComponentAdapter {
val delay = Swing_Thread.delay_last(Isabelle.session.update_delay) { handle_resize() }
override def componentResized(e: ComponentEvent) { delay() }
})
/* controls */
private val zoom = new Library.Zoom_Box(factor => { zoom_factor = factor; handle_resize() })
zoom.tooltip = "Zoom factor for basic font size"
private val debug = new CheckBox("Debug") {
reactions += { case ButtonClicked(_) => show_debug = this.selected; handle_update() }
}
debug.selected = show_debug
debug.tooltip =
"<html>Indicate output of debug messages<br>(also needs to be enabled on the prover side)</html>"
private val tracing = new CheckBox("Tracing") {
reactions += { case ButtonClicked(_) => show_tracing = this.selected; handle_update() }
}
tracing.selected = show_tracing
tracing.tooltip = "Indicate output of tracing messages"
private val auto_update = new CheckBox("Auto update") {
reactions += { case ButtonClicked(_) => follow_caret = this.selected; handle_update() }
}
auto_update.selected = follow_caret
auto_update.tooltip = "Indicate automatic update following cursor movement"
private val update = new Button("Update") {
reactions += { case ButtonClicked(_) => handle_perspective(); handle_update() }
}
update.tooltip = "Update display according to the command at cursor position"
val controls = new FlowPanel(FlowPanel.Alignment.Right)(zoom, debug, tracing, auto_update, update)
add(controls.peer, BorderLayout.NORTH)
handle_update()
}