author | wenzelm |
Sat, 27 Dec 2008 14:13:05 +0100 | |
changeset 34440 | 561a6d19bd95 |
parent 34438 | 2faedc70b52d |
child 34456 | 14367c0715e8 |
permissions | -rw-r--r-- |
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/* |
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* Dockable window with scrollable messages |
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* |
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* @author Fabian Immler, TU Munich |
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*/ |
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package isabelle.jedit |
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import isabelle.IsabelleProcess.Result |
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import isabelle.YXML.parse_failsafe |
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import isabelle.utils.EventSource |
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import isabelle.renderer.UserAgent |
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import scala.collection.mutable.{ArrayBuffer, HashMap} |
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import java.awt.{BorderLayout, Adjustable, Dimension} |
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import java.awt.event.{ActionListener, ActionEvent, AdjustmentListener, AdjustmentEvent, ComponentListener, ComponentEvent} |
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import javax.swing.{JFrame, JPanel, JRadioButton, JScrollBar, JTextArea, Timer} |
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import org.w3c.dom.Document |
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import org.xhtmlrenderer.simple.XHTMLPanel |
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import org.xhtmlrenderer.context.AWTFontResolver |
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import org.gjt.sp.jedit.View |
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import org.gjt.sp.jedit.gui.DockableWindowManager |
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trait Renderer[U, R] { |
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def render (u: U): R |
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//relayout a rendered element using argument a |
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def relayout (r: R, a: Int) |
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} |
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trait Unrendered[U] { |
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def addUnrendered (id: Int, u: U) : Unit |
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def getUnrendered (id: Int) : Option[U] |
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def size : Int |
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} |
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trait Rendered[U, R] { |
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def getRendered (id: Int) : Option[R] |
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val renderer : Renderer[U, R] |
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} |
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class MessagePanel(cache: Rendered[_, XHTMLPanel]) extends JPanel { |
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// defining the current view |
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var offset = 0 //what percentage of the lowest message is hidden |
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var no = -1 //index of the lowest message |
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// preferences |
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val scrollunit = 5 |
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setLayout(null) |
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// place the bottom of the message at y-coordinate and return the rendered panel |
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def place_message (message_no: Int, y: Int) = { |
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//add panel to cache if necessary and possible |
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cache.getRendered(message_no) match { |
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case Some(panel) => { |
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//panel has to be displayable before calculating preferred size! |
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add(panel) |
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// recalculate preferred size after resizing the message_view |
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if(panel.getPreferredSize.getWidth.toInt != getWidth){ |
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cache.renderer.relayout (panel, getWidth) |
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} |
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val width = panel.getPreferredSize.getWidth.toInt |
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val height = panel.getPreferredSize.getHeight.toInt |
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panel.setBounds(0, y - height, width, height) |
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panel |
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} |
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case None => null |
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} |
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} |
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override def doLayout = { |
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removeAll() |
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//calculate offset in pixel |
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val panel = place_message(no, 0) |
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val pixeloffset = if(panel != null) panel.getHeight*offset/100 else 0 |
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var n = no |
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var y:Int = getHeight + pixeloffset |
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while (y >= 0 && n >= 0){ |
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val panel = place_message (n, y) |
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if(panel != null) { |
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panel.setBorder(javax.swing.border.LineBorder.createBlackLineBorder) |
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y = y - panel.getHeight |
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} |
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n = n - 1 |
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} |
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} |
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} |
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class InfoPanel extends JPanel { |
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val auto_scroll = new JRadioButton("Auto Scroll", false) |
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val message_ind = new JTextArea("0") |
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add(message_ind) |
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add(auto_scroll) |
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def isAutoScroll = auto_scroll.isSelected |
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def setIndicator(b: Boolean) = { |
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message_ind.setBackground(if (b) java.awt.Color.red else java.awt.Color.white) |
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} |
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def setText(s: String) { |
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message_ind.setText(s) |
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} |
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} |
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class ScrollerDockable(view : View, position : String) extends JPanel with AdjustmentListener { |
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val renderer:Renderer[Result, XHTMLPanel] = new ResultToPanelRenderer |
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val buffer:Unrendered[Result] = new MessageBuffer |
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val cache:Rendered[Result, XHTMLPanel] = new PanelCache(buffer, renderer) |
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val subunits = 100 |
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// set up view |
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val message_panel = new MessagePanel(cache) |
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val infopanel = new InfoPanel |
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val vscroll = new JScrollBar(Adjustable.VERTICAL, 0, 1, 0, 1) |
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vscroll.setUnitIncrement(subunits / 3) |
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vscroll.setBlockIncrement(subunits) |
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vscroll.addAdjustmentListener(this) |
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if (position == DockableWindowManager.FLOATING) |
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setPreferredSize(new Dimension(500, 250)) |
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setLayout(new BorderLayout()) |
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add (vscroll, BorderLayout.EAST) |
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add (message_panel, BorderLayout.CENTER) |
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add (infopanel, BorderLayout.SOUTH) |
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// do not show every new message, wait a certain amount of time |
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val message_ind_timer : Timer = new Timer(250, new ActionListener { |
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// this method is called to indicate a new message |
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override def actionPerformed(e:ActionEvent){ |
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//fire scroll-event if necessary and wanted |
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if(message_panel.no != buffer.size*subunits - 1 && infopanel.isAutoScroll) { |
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vscroll.setValue(buffer.size*subunits - 1) |
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} |
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infopanel.setIndicator(false) |
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} |
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}) |
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def add_result (result: Result) = { |
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buffer.addUnrendered(buffer.size, result) |
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vscroll.setMaximum (Math.max(1, buffer.size * subunits)) |
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infopanel.setIndicator(true) |
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infopanel.setText(buffer.size.toString) |
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if (! message_ind_timer.isRunning()){ |
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if(infopanel.isAutoScroll){ |
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vscroll.setValue(buffer.size*subunits - 1) |
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} |
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message_ind_timer.setRepeats(false) |
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message_ind_timer.start() |
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} |
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if(message_panel.no == -1) { |
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message_panel.no = 0 |
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message_panel.revalidate |
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} |
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} |
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override def adjustmentValueChanged (e : AdjustmentEvent) = { |
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//event-handling has to be so general (without UNIT_INCR,...) |
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// because all events could be sent as TRACK e.g. on my mac |
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if (e.getSource == vscroll){ |
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message_panel.no = e.getValue / subunits |
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message_panel.offset = 100 - 100 * (e.getValue % subunits) / subunits |
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message_panel.revalidate |
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} |
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} |
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// TODO: register |
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//Isabelle.plugin.prover.allInfo.add(add_result(_)) |
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} |
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//Concrete Implementations |
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//containing the unrendered messages |
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class MessageBuffer extends HashMap[Int,Result] with Unrendered[Result]{ |
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override def addUnrendered (id: Int, m: Result) { |
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update(id, m) |
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} |
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override def getUnrendered (id: Int): Option[Result] = { |
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if(id < size && id >= 0 && apply(id) != null) Some (apply(id)) |
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else None |
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} |
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override def size = super.size |
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} |
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//containing the rendered messages |
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class PanelCache (buffer: Unrendered[Result], val renderer: Renderer[Result, XHTMLPanel]) |
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extends HashMap[Int, XHTMLPanel] with Rendered[Result, XHTMLPanel]{ |
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override def getRendered (id: Int): Option[XHTMLPanel] = { |
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//get message from buffer and render it if necessary |
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if(!isDefinedAt(id)){ |
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buffer.getUnrendered(id) match { |
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case Some (message) => |
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update (id, renderer.render (message)) |
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case None => |
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} |
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} |
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val result = try { |
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Some (apply(id)) |
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} catch { |
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case _ => { |
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None |
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} |
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} |
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return result |
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} |
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} |
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class ResultToPanelRenderer extends Renderer[Result, XHTMLPanel]{ |
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def render (r: Result): XHTMLPanel = { |
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val panel = new XHTMLPanel(new UserAgent()) |
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val fontResolver = |
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panel.getSharedContext.getFontResolver.asInstanceOf[AWTFontResolver] |
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if (Isabelle.plugin.font != null) |
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fontResolver.setFontMapping("Isabelle", Isabelle.plugin.font) |
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Isabelle.plugin.font_changed.add(font => { |
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if (Isabelle.plugin.font != null) |
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fontResolver.setFontMapping("Isabelle", Isabelle.plugin.font) |
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panel.relayout() |
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}) |
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val tree = parse_failsafe(Isabelle.symbols.decode(r.result)) |
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val document = XML.document(tree) |
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panel.setDocument(document, UserAgent.baseURL) |
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val sa = new SelectionActions |
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sa.install(panel) |
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panel |
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} |
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def relayout (panel: XHTMLPanel, width : Int) { |
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// ATTENTION: |
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// panel has to be displayable in a frame/container message_view for doDocumentLayout to have |
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// an effect, especially returning correct preferredSize |
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panel.setBounds (0, 0, width, 1) // document has to fit into width |
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panel.doDocumentLayout (panel.getGraphics) //lay out, preferred size is set then |
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// if there are thousands of empty panels, all have to be rendered - |
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// but this takes time (even for empty panels); therefore minimum size |
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panel.setPreferredSize(new java.awt.Dimension(width, Math.max(25, panel.getPreferredSize.getHeight.toInt))) |
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} |
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} |