proper document blobs for initial edit, which is relevant for loading auxiliary file buffers;
/* Title: Tools/jEdit/src/document_model.scala
Author: Fabian Immler, TU Munich
Author: Makarius
Document model connected to jEdit buffer (node in theory graph or
auxiliary file).
*/
package isabelle.jedit
import isabelle._
import scala.collection.mutable
import org.gjt.sp.jedit.Buffer
import org.gjt.sp.jedit.buffer.{BufferAdapter, BufferListener, JEditBuffer}
object Document_Model
{
/* document model of buffer */
private val key = "PIDE.document_model"
def apply(buffer: Buffer): Option[Document_Model] =
{
Swing_Thread.require()
buffer.getProperty(key) match {
case model: Document_Model => Some(model)
case _ => None
}
}
def exit(buffer: Buffer)
{
Swing_Thread.require()
apply(buffer) match {
case None =>
case Some(model) =>
model.deactivate()
buffer.unsetProperty(key)
buffer.propertiesChanged
}
}
def init(session: Session, buffer: Buffer, node_name: Document.Node.Name): Document_Model =
{
Swing_Thread.require()
apply(buffer).map(_.deactivate)
val model = new Document_Model(session, buffer, node_name)
buffer.setProperty(key, model)
model.activate()
buffer.propertiesChanged
model
}
}
class Document_Model(val session: Session, val buffer: Buffer, val node_name: Document.Node.Name)
{
/* header */
def is_theory: Boolean = node_name.is_theory
def node_header(): Document.Node.Header =
{
Swing_Thread.require()
if (is_theory) {
JEdit_Lib.buffer_lock(buffer) {
Exn.capture {
PIDE.thy_load.check_thy_text(node_name, buffer.getSegment(0, buffer.getLength))
} match {
case Exn.Res(header) => header
case Exn.Exn(exn) => Document.Node.bad_header(Exn.message(exn))
}
}
}
else Document.Node.no_header
}
/* perspective */
// owned by Swing thread
private var _node_required = false
def node_required: Boolean = _node_required
def node_required_=(b: Boolean)
{
Swing_Thread.require()
if (_node_required != b && is_theory) {
_node_required = b
PIDE.options_changed()
PIDE.editor.flush()
}
}
val empty_perspective: Document.Node.Perspective_Text =
Document.Node.Perspective(false, Text.Perspective.empty, Document.Node.Overlays.empty)
def node_perspective(doc_blobs: Document.Blobs): (Boolean, Document.Node.Perspective_Text) =
{
Swing_Thread.require()
if (Isabelle.continuous_checking && is_theory) {
val snapshot = this.snapshot()
val document_view_ranges =
if (is_theory) {
for {
doc_view <- PIDE.document_views(buffer)
range <- doc_view.perspective(snapshot).ranges
} yield range
}
else Nil
val thy_load_ranges =
for {
cmd <- snapshot.node.thy_load_commands
blob_name <- cmd.blobs_names
blob_buffer <- JEdit_Lib.jedit_buffer(blob_name.node)
if !JEdit_Lib.jedit_text_areas(blob_buffer).isEmpty
start <- snapshot.node.command_start(cmd)
range = snapshot.convert(cmd.proper_range + start)
} yield range
val reparse =
snapshot.node.thy_load_commands.exists(cmd => cmd.blobs_names.exists(doc_blobs.changed))
(reparse,
Document.Node.Perspective(node_required,
Text.Perspective(document_view_ranges ::: thy_load_ranges),
PIDE.editor.node_overlays(node_name)))
}
else (false, empty_perspective)
}
/* blob */
private var _blob: Option[(Bytes, Command.File)] = None // owned by Swing thread
private def reset_blob(): Unit = Swing_Thread.require { _blob = None }
def get_blob(): Option[Document.Blob] =
Swing_Thread.require {
if (is_theory) None
else {
val (bytes, file) =
_blob match {
case Some(x) => x
case None =>
val bytes = PIDE.thy_load.file_content(buffer)
val file = new Command.File(node_name.node, buffer.getSegment(0, buffer.getLength))
_blob = Some((bytes, file))
(bytes, file)
}
val changed = pending_edits.is_pending()
Some(Document.Blob(bytes, file, changed))
}
}
/* edits */
def init_edits(doc_blobs: Document.Blobs): List[Document.Edit_Text] =
{
Swing_Thread.require()
val header = node_header()
val text = JEdit_Lib.buffer_text(buffer)
val (_, perspective) = node_perspective(doc_blobs)
if (is_theory)
List(session.header_edit(node_name, header),
node_name -> Document.Node.Clear(),
node_name -> Document.Node.Edits(List(Text.Edit.insert(0, text))),
node_name -> perspective)
else
List(node_name -> Document.Node.Blob(),
node_name -> Document.Node.Edits(List(Text.Edit.insert(0, text))))
}
def node_edits(
clear: Boolean,
text_edits: List[Text.Edit],
perspective: Document.Node.Perspective_Text): List[Document.Edit_Text] =
{
Swing_Thread.require()
if (is_theory) {
val header_edit = session.header_edit(node_name, node_header())
if (clear)
List(header_edit,
node_name -> Document.Node.Clear(),
node_name -> Document.Node.Edits(text_edits),
node_name -> perspective)
else
List(header_edit,
node_name -> Document.Node.Edits(text_edits),
node_name -> perspective)
}
else
List(node_name -> Document.Node.Blob(),
node_name -> Document.Node.Edits(text_edits))
}
/* pending edits */
private object pending_edits // owned by Swing thread
{
private var pending_clear = false
private val pending = new mutable.ListBuffer[Text.Edit]
private var last_perspective = empty_perspective
def is_pending(): Boolean = pending_clear || !pending.isEmpty
def snapshot(): List[Text.Edit] = pending.toList
def flushed_edits(doc_blobs: Document.Blobs): List[Document.Edit_Text] =
{
val clear = pending_clear
val edits = snapshot()
val (reparse, perspective) = node_perspective(doc_blobs)
if (clear || reparse || !edits.isEmpty || last_perspective != perspective) {
pending_clear = false
pending.clear
last_perspective = perspective
node_edits(clear, edits, perspective)
}
else Nil
}
def edit(clear: Boolean, e: Text.Edit)
{
reset_blob()
if (clear) {
pending_clear = true
pending.clear
}
pending += e
PIDE.editor.invoke()
}
}
def snapshot(): Document.Snapshot =
Swing_Thread.require { session.snapshot(node_name, pending_edits.snapshot()) }
def flushed_edits(doc_blobs: Document.Blobs): List[Document.Edit_Text] =
Swing_Thread.require { pending_edits.flushed_edits(doc_blobs) }
/* buffer listener */
private val buffer_listener: BufferListener = new BufferAdapter
{
override def bufferLoaded(buffer: JEditBuffer)
{
pending_edits.edit(true, Text.Edit.insert(0, buffer.getText(0, buffer.getLength)))
}
override def contentInserted(buffer: JEditBuffer,
start_line: Int, offset: Int, num_lines: Int, length: Int)
{
if (!buffer.isLoading)
pending_edits.edit(false, Text.Edit.insert(offset, buffer.getText(offset, length)))
}
override def preContentRemoved(buffer: JEditBuffer,
start_line: Int, offset: Int, num_lines: Int, removed_length: Int)
{
if (!buffer.isLoading)
pending_edits.edit(false, Text.Edit.remove(offset, buffer.getText(offset, removed_length)))
}
}
/* activation */
private def activate()
{
buffer.addBufferListener(buffer_listener)
Token_Markup.refresh_buffer(buffer)
}
private def deactivate()
{
buffer.removeBufferListener(buffer_listener)
Token_Markup.refresh_buffer(buffer)
}
}