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/* Title: Tools/jEdit/src/pretty_text_area.scala
Author: Makarius
GUI component for pretty-printed text with markup, rendered like jEdit
text area.
*/
package isabelle.jedit
import isabelle._
import java.awt.{Color, Font, Toolkit, Window}
import java.awt.event.{InputEvent, KeyEvent}
import java.awt.im.InputMethodRequests
import javax.swing.JTextField
import javax.swing.event.{DocumentListener, DocumentEvent}
import scala.swing.{Label, Component}
import scala.util.matching.Regex
import org.gjt.sp.jedit.{jEdit, View, Registers, JEditBeanShellAction}
import org.gjt.sp.jedit.input.{DefaultInputHandlerProvider, TextAreaInputHandler}
import org.gjt.sp.jedit.textarea.{AntiAlias, JEditEmbeddedTextArea}
import org.gjt.sp.jedit.syntax.SyntaxStyle
import org.gjt.sp.jedit.gui.KeyEventTranslator
import org.gjt.sp.util.{SyntaxUtilities, Log}
class Pretty_Text_Area(
view: View,
close_action: () => Unit = () => (),
propagate_keys: Boolean = false) extends JEditEmbeddedTextArea
{
text_area =>
GUI_Thread.require {}
private var current_font_info: Font_Info = Font_Info.main()
private var current_body: XML.Body = Nil
private var current_base_snapshot = Document.Snapshot.init
private var current_base_results = Command.Results.empty
private var current_rendering: JEdit_Rendering =
JEdit_Rendering.text(current_base_snapshot, Nil)._2
private var future_refresh: Option[Future[Unit]] = None
private val rich_text_area =
new Rich_Text_Area(view, text_area, () => current_rendering, close_action,
get_search_pattern _, () => (), caret_visible = false, enable_hovering = true)
private var current_search_pattern: Option[Regex] = None
def get_search_pattern(): Option[Regex] = GUI_Thread.require { current_search_pattern }
def get_background(): Option[Color] = None
def refresh()
{
GUI_Thread.require {}
val font = current_font_info.font
getPainter.setFont(font)
getPainter.setAntiAlias(new AntiAlias(jEdit.getProperty("view.antiAlias")))
getPainter.setFractionalFontMetricsEnabled(jEdit.getBooleanProperty("view.fracFontMetrics"))
getPainter.setStyles(
SyntaxUtilities.loadStyles(current_font_info.family, current_font_info.size.round))
getPainter.setLineExtraSpacing(jEdit.getIntegerProperty("options.textarea.lineSpacing", 0))
val fold_line_style = new Array[SyntaxStyle](4)
for (i <- 0 to 3) {
fold_line_style(i) =
SyntaxUtilities.parseStyle(
jEdit.getProperty("view.style.foldLine." + i),
current_font_info.family, current_font_info.size.round, true)
}
getPainter.setFoldLineStyle(fold_line_style)
getGutter.setForeground(jEdit.getColorProperty("view.gutter.fgColor"))
getGutter.setBackground(jEdit.getColorProperty("view.gutter.bgColor"))
get_background().foreach(bg => { getPainter.setBackground(bg); getGutter.setBackground(bg) })
getGutter.setHighlightedForeground(jEdit.getColorProperty("view.gutter.highlightColor"))
getGutter.setFoldColor(jEdit.getColorProperty("view.gutter.foldColor"))
getGutter.setFont(jEdit.getFontProperty("view.gutter.font"))
getGutter.setBorder(0,
jEdit.getColorProperty("view.gutter.focusBorderColor"),
jEdit.getColorProperty("view.gutter.noFocusBorderColor"),
getPainter.getBackground)
getGutter.setFoldPainter(view.getTextArea.getFoldPainter)
getGutter.setGutterEnabled(jEdit.getBooleanProperty("view.gutter.enabled"))
if (getWidth > 0) {
val metric = JEdit_Lib.pretty_metric(getPainter)
val margin = ((getPainter.getWidth.toDouble / metric.unit) max 20.0).floor
val snapshot = current_base_snapshot
val results = current_base_results
val formatted_body = Pretty.formatted(current_body, margin = margin, metric = metric)
future_refresh.foreach(_.cancel)
future_refresh =
Some(Future.fork {
val (text, rendering) =
try { JEdit_Rendering.text(snapshot, formatted_body, results = results) }
catch { case exn: Throwable => Log.log(Log.ERROR, this, exn); throw exn }
Exn.Interrupt.expose()
GUI_Thread.later {
current_rendering = rendering
JEdit_Lib.buffer_edit(getBuffer) {
rich_text_area.active_reset()
getBuffer.setFoldHandler(new Fold_Handling.Document_Fold_Handler(rendering))
JEdit_Lib.buffer_undo_in_progress(getBuffer, setText(text))
setCaretPosition(0)
}
}
})
}
}
def resize(font_info: Font_Info)
{
GUI_Thread.require {}
current_font_info = font_info
refresh()
}
def update(base_snapshot: Document.Snapshot, base_results: Command.Results, body: XML.Body)
{
GUI_Thread.require {}
require(!base_snapshot.is_outdated, "document snapshot outdated")
current_base_snapshot = base_snapshot
current_base_results = base_results
current_body = body
refresh()
}
def detach
{
GUI_Thread.require {}
Info_Dockable(view, current_base_snapshot, current_base_results, current_body)
}
def detach_operation: Option[() => Unit] =
if (current_body.isEmpty) None else Some(() => detach)
/* common GUI components */
val search_label: Component = new Label("Search:") {
tooltip = "Search and highlight output via regular expression"
}
val search_field: Component =
Component.wrap(new Completion_Popup.History_Text_Field("isabelle-search")
{
private val input_delay =
Delay.last(PIDE.options.seconds("editor_input_delay"), gui = true) {
search_action(this)
}
getDocument.addDocumentListener(new DocumentListener {
def changedUpdate(e: DocumentEvent) { input_delay.invoke() }
def insertUpdate(e: DocumentEvent) { input_delay.invoke() }
def removeUpdate(e: DocumentEvent) { input_delay.invoke() }
})
setColumns(20)
setToolTipText(search_label.tooltip)
setFont(GUI.imitate_font(getFont, scale = 1.2))
})
private val search_field_foreground = search_field.foreground
private def search_action(text_field: JTextField)
{
val (pattern, ok) =
text_field.getText match {
case null | "" => (None, true)
case s =>
val re = Library.make_regex(s)
(re, re.isDefined)
}
if (current_search_pattern != pattern) {
current_search_pattern = pattern
text_area.getPainter.repaint()
}
text_field.setForeground(
if (ok) search_field_foreground
else current_rendering.color(Rendering.Color.error))
}
/* key handling */
override def getInputMethodRequests: InputMethodRequests = null
inputHandlerProvider =
new DefaultInputHandlerProvider(new TextAreaInputHandler(text_area) {
override def getAction(action: String): JEditBeanShellAction =
text_area.getActionContext.getAction(action)
override def processKeyEvent(evt: KeyEvent, from: Int, global: Boolean) {}
override def handleKey(key: KeyEventTranslator.Key, dry_run: Boolean): Boolean = false
})
addKeyListener(JEdit_Lib.key_listener(
key_pressed = (evt: KeyEvent) =>
{
val strict_control =
JEdit_Lib.command_modifier(evt) && !JEdit_Lib.shift_modifier(evt)
evt.getKeyCode match {
case KeyEvent.VK_C | KeyEvent.VK_INSERT
if strict_control && text_area.getSelectionCount != 0 =>
Registers.copy(text_area, '$')
evt.consume
case KeyEvent.VK_A
if strict_control =>
text_area.selectAll
evt.consume
case KeyEvent.VK_ESCAPE =>
if (Isabelle.dismissed_popups(view)) evt.consume
case _ =>
}
if (propagate_keys) JEdit_Lib.propagate_key(view, evt)
},
key_typed = (evt: KeyEvent) =>
{
if (propagate_keys) JEdit_Lib.propagate_key(view, evt)
}
)
)
/* init */
getPainter.setStructureHighlightEnabled(false)
getPainter.setLineHighlightEnabled(false)
getBuffer.setTokenMarker(Isabelle.mode_token_marker("isabelle-output").get)
getBuffer.setStringProperty("noWordSep", "_'?⇩")
rich_text_area.activate()
}
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet)
¤
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Bemerkung:
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