maintain Completion_Popup.Text_Area as client property like Document_View;
global Completion_Popup.Text_Area init/exit like SideKickPlugin;
eliminated old SideKick completion -- cover all Isabelle modes uniformly;
dynamic lookup of Isabelle.mode_syntax -- NB: buffer mode might be undefined in intermediate stages;
/* Title: Tools/jEdit/src/document_view.scala
Author: Fabian Immler, TU Munich
Author: Makarius
Document view connected to jEdit text area.
*/
package isabelle.jedit
import isabelle._
import scala.collection.mutable
import scala.collection.immutable.SortedMap
import scala.actors.Actor._
import java.lang.System
import java.text.BreakIterator
import java.awt.{Color, Graphics2D, Point}
import java.awt.event.KeyEvent
import javax.swing.event.{CaretListener, CaretEvent}
import org.gjt.sp.jedit.{jEdit, Debug}
import org.gjt.sp.jedit.gui.RolloverButton
import org.gjt.sp.jedit.options.GutterOptionPane
import org.gjt.sp.jedit.textarea.{JEditTextArea, TextArea, TextAreaExtension, TextAreaPainter}
import org.gjt.sp.jedit.syntax.SyntaxStyle
object Document_View
{
/* document view of text area */
private val key = new Object
def apply(text_area: JEditTextArea): Option[Document_View] =
{
Swing_Thread.require()
text_area.getClientProperty(key) match {
case doc_view: Document_View => Some(doc_view)
case _ => None
}
}
def exit(text_area: JEditTextArea)
{
Swing_Thread.require()
apply(text_area) match {
case None =>
case Some(doc_view) =>
doc_view.deactivate()
text_area.putClientProperty(key, null)
}
}
def init(model: Document_Model, text_area: JEditTextArea): Document_View =
{
exit(text_area)
val doc_view = new Document_View(model, text_area)
text_area.putClientProperty(key, doc_view)
doc_view.activate()
doc_view
}
}
class Document_View(val model: Document_Model, val text_area: JEditTextArea)
{
private val session = model.session
def get_rendering(): Rendering = Rendering(model.snapshot(), PIDE.options.value)
val rich_text_area =
new Rich_Text_Area(text_area.getView, text_area, get_rendering _, () => (),
caret_visible = true, enable_hovering = false)
/* perspective */
def perspective(): Text.Perspective =
{
Swing_Thread.require()
val buffer_range = JEdit_Lib.buffer_range(model.buffer)
Text.Perspective(
for {
i <- 0 until text_area.getVisibleLines
start = text_area.getScreenLineStartOffset(i)
stop = text_area.getScreenLineEndOffset(i)
if start >= 0 && stop >= 0
range <- buffer_range.try_restrict(Text.Range(start, stop))
if !range.is_singularity
}
yield range)
}
private def update_perspective = new TextAreaExtension
{
override def paintScreenLineRange(gfx: Graphics2D,
first_line: Int, last_line: Int, physical_lines: Array[Int],
start: Array[Int], end: Array[Int], y: Int, line_height: Int)
{
// no robust_body
model.update_perspective()
}
}
/* gutter */
private val gutter_painter = new TextAreaExtension
{
override def paintScreenLineRange(gfx: Graphics2D,
first_line: Int, last_line: Int, physical_lines: Array[Int],
start: Array[Int], end: Array[Int], y: Int, line_height: Int)
{
rich_text_area.robust_body(()) {
Swing_Thread.assert()
val gutter = text_area.getGutter
val width = GutterOptionPane.getSelectionAreaWidth
val border_width = jEdit.getIntegerProperty("view.gutter.borderWidth", 3)
val FOLD_MARKER_SIZE = 12
if (gutter.isSelectionAreaEnabled && !gutter.isExpanded && width >= 12 && line_height >= 12) {
val buffer = model.buffer
JEdit_Lib.buffer_lock(buffer) {
val rendering = get_rendering()
for (i <- 0 until physical_lines.length) {
if (physical_lines(i) != -1) {
val line_range = Text.Range(start(i), end(i))
// gutter icons
rendering.gutter_message(line_range) match {
case Some(icon) =>
val x0 = (FOLD_MARKER_SIZE + width - border_width - icon.getIconWidth) max 10
val y0 = y + i * line_height + (((line_height - icon.getIconHeight) / 2) max 0)
icon.paintIcon(gutter, gfx, x0, y0)
case None =>
}
}
}
}
}
}
}
}
/* key listener */
private val key_listener =
JEdit_Lib.key_listener(
key_pressed = (evt: KeyEvent) =>
{
if (evt.getKeyCode == KeyEvent.VK_ESCAPE && PIDE.dismissed_popups(text_area.getView))
evt.consume
}
)
/* caret handling */
private val delay_caret_update =
Swing_Thread.delay_last(PIDE.options.seconds("editor_input_delay")) {
session.caret_focus.event(Session.Caret_Focus)
}
private val caret_listener = new CaretListener {
override def caretUpdate(e: CaretEvent) { delay_caret_update.invoke() }
}
/* text status overview left of scrollbar */
private object overview extends Text_Overview(this)
{
val delay_repaint =
Swing_Thread.delay_first(PIDE.options.seconds("editor_update_delay")) { repaint() }
}
/* main actor */
private val main_actor = actor {
loop {
react {
case _: Session.Raw_Edits =>
Swing_Thread.later {
overview.delay_repaint.postpone(PIDE.options.seconds("editor_input_delay"))
}
case changed: Session.Commands_Changed =>
val buffer = model.buffer
Swing_Thread.later {
JEdit_Lib.buffer_lock(buffer) {
if (model.buffer == text_area.getBuffer) {
val snapshot = model.snapshot()
if (changed.assignment ||
(changed.nodes.contains(model.node_name) &&
changed.commands.exists(snapshot.node.commands.contains)))
Swing_Thread.later { overview.delay_repaint.invoke() }
val visible_lines = text_area.getVisibleLines
if (visible_lines > 0) {
if (changed.assignment) text_area.invalidateScreenLineRange(0, visible_lines)
else {
val visible_range = JEdit_Lib.visible_range(text_area).get
val visible_cmds =
snapshot.node.command_range(snapshot.revert(visible_range)).map(_._1)
if (visible_cmds.exists(changed.commands)) {
for {
line <- 0 until visible_lines
start = text_area.getScreenLineStartOffset(line) if start >= 0
end = text_area.getScreenLineEndOffset(line) if end >= 0
range = Text.Range(start, end)
line_cmds = snapshot.node.command_range(snapshot.revert(range)).map(_._1)
if line_cmds.exists(changed.commands)
} text_area.invalidateScreenLineRange(line, line)
}
}
}
}
}
}
case bad => System.err.println("command_change_actor: ignoring bad message " + bad)
}
}
}
/* activation */
private def activate()
{
val painter = text_area.getPainter
painter.addExtension(TextAreaPainter.LOWEST_LAYER, update_perspective)
rich_text_area.activate()
text_area.getGutter.addExtension(gutter_painter)
text_area.addKeyListener(key_listener)
text_area.addCaretListener(caret_listener)
text_area.addLeftOfScrollBar(overview)
session.raw_edits += main_actor
session.commands_changed += main_actor
}
private def deactivate()
{
val painter = text_area.getPainter
session.raw_edits -= main_actor
session.commands_changed -= main_actor
text_area.removeLeftOfScrollBar(overview); overview.delay_repaint.revoke()
text_area.removeCaretListener(caret_listener); delay_caret_update.revoke()
text_area.removeKeyListener(key_listener)
text_area.getGutter.removeExtension(gutter_painter)
rich_text_area.deactivate()
painter.removeExtension(update_perspective)
}
}