author | wenzelm |
Sun, 30 Dec 2012 18:23:07 +0100 | |
changeset 50640 | b35bd8778754 |
parent 50542 | 58bd88159f8f |
child 50726 | 27478c11f63c |
permissions | -rw-r--r-- |
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/* Title: Tools/jEdit/src/pretty_text_area.scala |
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2 |
Author: Makarius |
0fa4389c04f9
alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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parents:
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|
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GUI component for pretty-printed text with markup, rendered like jEdit |
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text area. |
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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parents:
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*/ |
0fa4389c04f9
alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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parents:
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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package isabelle.jedit |
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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parents:
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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parents:
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import isabelle._ |
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import java.awt.{Color, Font, FontMetrics, Toolkit} |
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minimal clipboard support (similar to org.lobobrowser.html.gui.HtmlBlockPanel);
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import java.awt.event.{ActionListener, ActionEvent, KeyEvent} |
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import javax.swing.{KeyStroke, JComponent} |
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import org.gjt.sp.jedit.{jEdit, View, Registers} |
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import org.gjt.sp.jedit.textarea.{AntiAlias, JEditEmbeddedTextArea} |
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import org.gjt.sp.jedit.syntax.SyntaxStyle |
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import org.gjt.sp.util.{SyntaxUtilities, Log} |
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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object Pretty_Text_Area |
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{ |
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private def text_rendering(base_snapshot: Document.Snapshot, base_results: Command.Results, |
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formatted_body: XML.Body): (String, Rendering) = |
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{ |
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val (text, state) = Pretty_Text_Area.document_state(base_snapshot, base_results, formatted_body) |
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val rendering = Rendering(state.snapshot(), PIDE.options.value) |
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(text, rendering) |
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} |
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private def document_state(base_snapshot: Document.Snapshot, base_results: Command.Results, |
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formatted_body: XML.Body): (String, Document.State) = |
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{ |
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val command = Command.rich_text(Document.new_id(), base_results, formatted_body) |
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val node_name = command.node_name |
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val edits: List[Document.Edit_Text] = |
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List(node_name -> Document.Node.Edits(List(Text.Edit.insert(0, command.source)))) |
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val state0 = base_snapshot.state.define_command(command) |
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val version0 = base_snapshot.version |
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val nodes0 = version0.nodes |
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val nodes1 = nodes0 + (node_name -> nodes0(node_name).update_commands(Linear_Set(command))) |
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val version1 = Document.Version.make(version0.syntax, nodes1) |
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val state1 = |
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state0.continue_history(Future.value(version0), edits, Future.value(version1))._2 |
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.define_version(version1, state0.the_assignment(version0)) |
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.assign(version1.id, List(command.id -> Some(Document.new_id())))._2 |
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(command.source, state1) |
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} |
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} |
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class Pretty_Text_Area( |
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view: View, |
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background: Option[Color] = None) extends JEditEmbeddedTextArea |
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{ |
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text_area => |
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Swing_Thread.require() |
0fa4389c04f9
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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private var current_font_family = "Dialog" |
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alternative output panel, based on Pretty_Text_Area, based on JEditEmbeddedTextArea;
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private var current_font_size: Int = 12 |
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private var current_body: XML.Body = Nil |
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private var current_base_snapshot = Document.State.init.snapshot() |
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private var current_base_results = Command.Results.empty |
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private var current_rendering: Rendering = |
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Pretty_Text_Area.text_rendering(current_base_snapshot, current_base_results, Nil)._2 |
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private var future_rendering: Option[java.util.concurrent.Future[Unit]] = None |
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private val rich_text_area = |
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new Rich_Text_Area(view, text_area, () => current_rendering, |
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caret_visible = false, hovering = true) |
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def refresh() |
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{ |
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Swing_Thread.require() |
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val font = new Font(current_font_family, Font.PLAIN, current_font_size) |
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getPainter.setFont(font) |
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getPainter.setAntiAlias(new AntiAlias(jEdit.getProperty("view.antiAlias"))) |
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getPainter.setStyles(SyntaxUtilities.loadStyles(current_font_family, current_font_size)) |
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val fold_line_style = new Array[SyntaxStyle](4) |
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for (i <- 0 to 3) { |
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fold_line_style(i) = |
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SyntaxUtilities.parseStyle( |
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jEdit.getProperty("view.style.foldLine." + i), |
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current_font_family, current_font_size, true) |
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} |
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getPainter.setFoldLineStyle(fold_line_style) |
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if (getWidth > 0) { |
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getGutter.setForeground(jEdit.getColorProperty("view.gutter.fgColor")) |
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getGutter.setBackground(jEdit.getColorProperty("view.gutter.bgColor")) |
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background.map(bg => { getPainter.setBackground(bg); getGutter.setBackground(bg) }) |
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getGutter.setHighlightedForeground(jEdit.getColorProperty("view.gutter.highlightColor")) |
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getGutter.setFoldColor(jEdit.getColorProperty("view.gutter.foldColor")) |
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getGutter.setFont(jEdit.getFontProperty("view.gutter.font")) |
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getGutter.setBorder(0, |
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jEdit.getColorProperty("view.gutter.focusBorderColor"), |
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jEdit.getColorProperty("view.gutter.noFocusBorderColor"), |
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getPainter.getBackground) |
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getGutter.setFoldPainter(getFoldPainter) |
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|
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getGutter.setGutterEnabled(jEdit.getBooleanProperty("view.gutter.enabled")) |
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val font_metrics = getPainter.getFontMetrics(font) |
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val margin = |
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((getWidth - getGutter.getWidth) / (font_metrics.charWidth(Pretty.spc) max 1) - 2) max 20 |
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val base_snapshot = current_base_snapshot |
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val base_results = current_base_results |
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val formatted_body = Pretty.formatted(current_body, margin, Pretty.font_metric(font_metrics)) |
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future_rendering.map(_.cancel(true)) |
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future_rendering = Some(default_thread_pool.submit(() => |
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{ |
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val (text, rendering) = |
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try { Pretty_Text_Area.text_rendering(base_snapshot, base_results, formatted_body) } |
123 |
catch { case exn: Throwable => Log.log(Log.ERROR, this, exn); throw exn } |
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Simple_Thread.interrupted_exception() |
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Swing_Thread.later { |
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current_rendering = rendering |
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JEdit_Lib.buffer_edit(getBuffer) { |
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rich_text_area.active_reset() |
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getBuffer.setReadOnly(false) |
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getBuffer.setFoldHandler(new Fold_Handling.Document_Fold_Handler(rendering)) |
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setText(text) |
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setCaretPosition(0) |
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getBuffer.setReadOnly(true) |
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} |
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} |
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})) |
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} |
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} |
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|
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def resize(font_family: String, font_size: Int) |
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{ |
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Swing_Thread.require() |
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|
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current_font_family = font_family |
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current_font_size = font_size |
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refresh() |
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} |
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|
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def update(base_snapshot: Document.Snapshot, base_results: Command.Results, body: XML.Body) |
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{ |
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Swing_Thread.require() |
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require(!base_snapshot.is_outdated) |
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|
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current_base_snapshot = base_snapshot |
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current_base_results = base_results |
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current_body = body |
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refresh() |
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} |
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|
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|
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/* keyboard actions */ |
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|
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private val action_listener = new ActionListener { |
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def actionPerformed(e: ActionEvent) { |
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e.getActionCommand match { |
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case "copy" => Registers.copy(text_area, '$') |
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case _ => |
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} |
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} |
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} |
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registerKeyboardAction(action_listener, "copy", |
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KeyStroke.getKeyStroke(KeyEvent.VK_COPY, 0), JComponent.WHEN_FOCUSED) |
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registerKeyboardAction(action_listener, "copy", |
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KeyStroke.getKeyStroke(KeyEvent.VK_C, |
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Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()), JComponent.WHEN_FOCUSED) |
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|
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/* init */ |
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49472 | 182 |
getPainter.setStructureHighlightEnabled(false) |
49475 | 183 |
getPainter.setLineHighlightEnabled(false) |
184 |
||
49446 | 185 |
getBuffer.setTokenMarker(new Token_Markup.Marker(true, None)) |
186 |
getBuffer.setReadOnly(true) |
|
49475 | 187 |
|
49412 | 188 |
rich_text_area.activate() |
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} |
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