/* Title: Tools/jEdit/src/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.lang.System
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()
/* component state -- owned by Swing thread */
private var zoom_factor = 100
private var show_tracing = false
private var do_update = true
private var current_state = Command.empty.init_state
private var current_body: XML.Body = Nil
/* HTML panel */
private val html_panel =
new HTML_Panel(Isabelle.font_family(), scala.math.round(Isabelle.font_size()))
{
override val handler: PartialFunction[HTML_Panel.Event, Unit] =
{
case HTML_Panel.Mouse_Click(elem, event)
if Protocol.Sendback.unapply(elem.getUserData(Markup.Data.name)).isDefined =>
val sendback = Protocol.Sendback.unapply(elem.getUserData(Markup.Data.name)).get
Document_View(view.getTextArea) match {
case Some(doc_view) =>
doc_view.rich_text_area.robust_body() {
val cmd = current_state.command
val model = doc_view.model
val buffer = model.buffer
val snapshot = model.snapshot()
snapshot.node.command_start(cmd) match {
case Some(start) if !snapshot.is_outdated =>
val text = Pretty.string_of(sendback)
try {
buffer.beginCompoundEdit()
buffer.remove(start, cmd.proper_range.length)
buffer.insert(start, text)
}
finally { buffer.endCompoundEdit() }
case _ =>
}
}
case None =>
}
}
}
set_content(html_panel)
private def handle_resize()
{
Swing_Thread.require()
html_panel.resize(Isabelle.font_family(),
scala.math.round(Isabelle.font_size() * zoom_factor / 100))
}
private def handle_update(follow: Boolean, restriction: Option[Set[Command]])
{
Swing_Thread.require()
val new_state =
if (follow) {
Document_View(view.getTextArea) match {
case Some(doc_view) =>
val snapshot = doc_view.model.snapshot()
snapshot.node.command_at(doc_view.text_area.getCaretPosition).map(_._1) match {
case Some(cmd) => snapshot.state.command_state(snapshot.version, cmd)
case None => Command.empty.init_state
}
case None => Command.empty.init_state
}
}
else current_state
val new_body =
if (!restriction.isDefined || restriction.get.contains(new_state.command))
new_state.results.iterator.map(_._2)
.filter(msg => !Protocol.is_tracing(msg) || show_tracing).toList // FIXME not scalable
else current_body
if (new_body != current_body) html_panel.render(new_body)
current_state = new_state
current_body = new_body
}
/* main actor */
private val main_actor = actor {
loop {
react {
case Session.Global_Settings =>
Swing_Thread.later { handle_resize() }
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 => System.err.println("Output_Dockable: ignoring bad message " + bad)
}
}
}
override def init()
{
Swing_Thread.require()
Isabelle.session.global_settings += main_actor
Isabelle.session.commands_changed += main_actor
Isabelle.session.caret_focus += main_actor
handle_update(true, None)
}
override def exit()
{
Swing_Thread.require()
Isabelle.session.global_settings -= main_actor
Isabelle.session.commands_changed -= main_actor
Isabelle.session.caret_focus -= main_actor
delay_resize.revoke()
}
/* resize */
private val delay_resize =
Swing_Thread.delay_first(
Time.seconds(Isabelle.options.real("editor_update_delay"))) { handle_resize() }
addComponentListener(new ComponentAdapter {
override def componentResized(e: ComponentEvent) { delay_resize.invoke() }
})
/* controls */
private val zoom = new Library.Zoom_Box(factor => { zoom_factor = factor; handle_resize() })
zoom.tooltip = "Zoom factor for basic font size"
private val tracing = new CheckBox("Tracing") {
reactions += {
case ButtonClicked(_) => show_tracing = this.selected; handle_update(do_update, None) }
}
tracing.selected = show_tracing
tracing.tooltip = "Indicate output of tracing messages"
private val auto_update = new CheckBox("Auto update") {
reactions += {
case ButtonClicked(_) => do_update = this.selected; handle_update(do_update, None) }
}
auto_update.selected = do_update
auto_update.tooltip = "Indicate automatic update following cursor movement"
private val update = new Button("Update") {
reactions += { case ButtonClicked(_) => handle_update(true, None) }
}
update.tooltip = "Update display according to the command at cursor position"
private val controls = new FlowPanel(FlowPanel.Alignment.Right)(zoom, tracing, auto_update, update)
add(controls.peer, BorderLayout.NORTH)
}