/* Title: Tools/jEdit/src/jedit/isabelle_hyperlinks.scala
Author: Fabian Immler, TU Munich
Hyperlink setup for Isabelle proof documents.
*/
package isabelle.jedit
import isabelle._
import java.io.File
import gatchan.jedit.hyperlinks.{Hyperlink, HyperlinkSource, AbstractHyperlink}
import org.gjt.sp.jedit.{View, jEdit, Buffer, TextUtilities}
private class Internal_Hyperlink(start: Int, end: Int, line: Int, ref_offset: Int)
extends AbstractHyperlink(start, end, line, "")
{
override def click(view: View) {
view.getTextArea.moveCaretPosition(ref_offset)
}
}
class External_Hyperlink(start: Int, end: Int, line: Int, ref_file: String, ref_line: Int)
extends AbstractHyperlink(start, end, line, "")
{
override def click(view: View) = {
Isabelle.system.source_file(ref_file) match {
case None => System.err.println("Could not find source file " + ref_file) // FIXME ??
case Some(file) =>
jEdit.openFiles(view, file.getParent, Array(file.getName, "+line:" + ref_line))
}
}
}
class Isabelle_Hyperlinks extends HyperlinkSource
{
def getHyperlink(buffer: Buffer, buffer_offset: Int): Hyperlink =
{
Swing_Thread.assert()
Document_Model(buffer) match {
case Some(model) =>
val snapshot = model.snapshot()
val offset = snapshot.revert(buffer_offset)
snapshot.node.command_at(offset) match {
case Some((command, command_start)) =>
val root = Text.Info[Hyperlink]((Text.Range(offset) - command_start), null)
(snapshot.state(command).markup.select(root) {
case Text.Info(info_range, XML.Elem(Markup(Markup.ML_REF, _),
List(XML.Elem(Markup(Markup.ML_DEF, props), _)))) =>
val Text.Range(begin, end) = snapshot.convert(info_range + command_start)
val line = buffer.getLineOfOffset(begin)
(Position.get_file(props), Position.get_line(props)) match {
case (Some(ref_file), Some(ref_line)) =>
new External_Hyperlink(begin, end, line, ref_file, ref_line)
case _ =>
(Position.get_id(props), Position.get_offset(props)) match {
case (Some(ref_id), Some(ref_offset)) =>
snapshot.lookup_command(ref_id) match {
case Some(ref_cmd) =>
snapshot.node.command_start(ref_cmd) match {
case Some(ref_cmd_start) =>
new Internal_Hyperlink(begin, end, line,
snapshot.convert(ref_cmd_start + ref_cmd.decode(ref_offset)))
case None => null
}
case None => null
}
case _ => null
}
}
}).head.info
case None => null
}
case None => null
}
}
}