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/* Title: Tools/jEdit/src/info_dockable.scala
Author: Makarius
Dockable window with info text.
*/
package isabelle.jedit
import isabelle._
import isabelle.jedit_base.Dockable
import java.awt.BorderLayout
import java.awt.event.{ComponentEvent, ComponentAdapter, WindowFocusListener, WindowEvent}
import org.gjt.sp.jedit.View
object Info_Dockable
{
/* implicit arguments -- owned by GUI thread */
private var implicit_snapshot = Document.Snapshot.init
private var implicit_results = Command.Results.empty
private var implicit_info: XML.Body = Nil
private def set_implicit(snapshot: Document.Snapshot, results: Command.Results, info: XML.Body)
{
GUI_Thread.require {}
implicit_snapshot = snapshot
implicit_results = results
implicit_info = info
}
private def reset_implicit(): Unit =
set_implicit(Document.Snapshot.init, Command.Results.empty, Nil)
def apply(view: View, snapshot: Document.Snapshot, results: Command.Results, info: XML.Body)
{
set_implicit(snapshot, results, info)
view.getDockableWindowManager.floatDockableWindow("isabelle-info")
}
}
class Info_Dockable(view: View, position: String) extends Dockable(view, position)
{
/* component state -- owned by GUI thread */
private val snapshot = Info_Dockable.implicit_snapshot
private val results = Info_Dockable.implicit_results
private val info = Info_Dockable.implicit_info
private val window_focus_listener =
new WindowFocusListener {
def windowGainedFocus(e: WindowEvent) { Info_Dockable.set_implicit(snapshot, results, info) }
def windowLostFocus(e: WindowEvent) { Info_Dockable.reset_implicit() }
}
/* pretty text area */
private val pretty_text_area = new Pretty_Text_Area(view)
set_content(pretty_text_area)
pretty_text_area.update(snapshot, results, info)
private val zoom = new Font_Info.Zoom_Box { def changed = handle_resize() }
private def handle_resize()
{
GUI_Thread.require {}
pretty_text_area.resize(
Font_Info.main(PIDE.options.real("jedit_font_scale") * zoom.factor / 100))
}
/* resize */
private val delay_resize =
Delay.first(PIDE.options.seconds("editor_update_delay"), gui = true) { handle_resize() }
addComponentListener(new ComponentAdapter {
override def componentResized(e: ComponentEvent) { delay_resize.invoke() }
override def componentShown(e: ComponentEvent) { delay_resize.invoke() }
})
private val controls =
Wrap_Panel(List(pretty_text_area.search_label, pretty_text_area.search_field, zoom))
add(controls.peer, BorderLayout.NORTH)
/* main */
private val main =
Session.Consumer[Session.Global_Options](getClass.getName) {
case _: Session.Global_Options => GUI_Thread.later { handle_resize() }
}
override def init()
{
GUI.parent_window(this).map(_.addWindowFocusListener(window_focus_listener))
PIDE.session.global_options += main
handle_resize()
}
override def exit()
{
GUI.parent_window(this).map(_.removeWindowFocusListener(window_focus_listener))
PIDE.session.global_options -= main
delay_resize.revoke()
}
}
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