-///*******************************************************************************\r
-// * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
-// * in Industry THTH ry.\r
-// * All rights reserved. This program and the accompanying materials\r
-// * are made available under the terms of the Eclipse Public License v1.0\r
-// * which accompanies this distribution, and is available at\r
-// * http://www.eclipse.org/legal/epl-v10.html\r
-// *\r
-// * Contributors:\r
-// * VTT Technical Research Centre of Finland - initial API and implementation\r
-// *******************************************************************************/\r
-//package org.simantics.g2d.elementclass;\r
-//\r
-//import java.awt.BasicStroke;\r
-//import java.awt.Color;\r
-//import java.awt.Font;\r
-//import java.awt.FontMetrics;\r
-//import java.awt.Graphics2D;\r
-//import java.awt.Rectangle;\r
-//import java.awt.Shape;\r
-//import java.awt.event.ActionEvent;\r
-//import java.awt.event.ActionListener;\r
-//import java.awt.geom.AffineTransform;\r
-//import java.awt.geom.Path2D;\r
-//import java.awt.geom.Point2D;\r
-//import java.awt.geom.Rectangle2D;\r
-//import java.util.EnumSet;\r
-//import java.util.Map;\r
-//\r
-//import javax.vecmath.Vector2d;\r
-//\r
-//import org.simantics.g2d.diagram.IDiagram;\r
-//import org.simantics.g2d.element.ElementClass;\r
-//import org.simantics.g2d.element.ElementHints;\r
-//import org.simantics.g2d.element.ElementUtils;\r
-//import org.simantics.g2d.element.IElement;\r
-//import org.simantics.g2d.element.SceneGraphNodeKey;\r
-//import org.simantics.g2d.element.handler.ElementHandler;\r
-//import org.simantics.g2d.element.handler.FillColor;\r
-//import org.simantics.g2d.element.handler.InternalSize;\r
-//import org.simantics.g2d.element.handler.LifeCycle;\r
-//import org.simantics.g2d.element.handler.Move;\r
-//import org.simantics.g2d.element.handler.Outline;\r
-//import org.simantics.g2d.element.handler.Rotate;\r
-//import org.simantics.g2d.element.handler.Scale;\r
-//import org.simantics.g2d.element.handler.SceneGraph;\r
-//import org.simantics.g2d.element.handler.StaticSymbol;\r
-//import org.simantics.g2d.element.handler.Text;\r
-//import org.simantics.g2d.element.handler.TextEditor;\r
-//import org.simantics.g2d.element.handler.Transform;\r
-//import org.simantics.g2d.element.handler.TextEditor.Modifier;\r
-//import org.simantics.g2d.element.handler.impl.BorderColorImpl;\r
-//import org.simantics.g2d.element.handler.impl.FillColorImpl;\r
-//import org.simantics.g2d.element.handler.impl.SimpleElementLayers;\r
-//import org.simantics.g2d.element.handler.impl.StaticSymbolImpl;\r
-//import org.simantics.g2d.element.handler.impl.TextColorImpl;\r
-//import org.simantics.g2d.element.handler.impl.TextEditorImpl;\r
-//import org.simantics.g2d.element.handler.impl.TextFontImpl;\r
-//import org.simantics.g2d.element.handler.impl.TextImpl;\r
-//import org.simantics.g2d.image.Image;\r
-//import org.simantics.g2d.image.ProviderUtils;\r
-//import org.simantics.g2d.image.impl.AbstractImage;\r
-//import org.simantics.g2d.utils.Alignment;\r
-//import org.simantics.scenegraph.Node;\r
-//import org.simantics.scenegraph.g2d.G2DParentNode;\r
-//import org.simantics.scenegraph.g2d.nodes.MonitorNode;\r
-//import org.simantics.utils.datastructures.cache.IFactory;\r
-//import org.simantics.utils.datastructures.cache.IProvider;\r
-//import org.simantics.utils.datastructures.cache.ProvisionException;\r
-//import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
-//import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
-//import org.simantics.utils.strings.format.MetricsFormat;\r
-//import org.simantics.utils.strings.format.MetricsFormatList;\r
-//\r
-///**\r
-// * @author Tuukka Lehtonen\r
-// */\r
-//public class MonitorClass {\r
-//\r
-// static final Font FONT = Font.decode("Helvetica 12");\r
-//\r
-// /**\r
-// * Back-end specific object describing the monitored component.\r
-// */\r
-// public static final Key KEY_MONITOR_COMPONENT = new KeyOf(Object.class, "MONITOR_COMPONENT");\r
-//\r
-// /**\r
-// * The valuation suffix string describing the monitored variable of the\r
-// * component described by {@link #KEY_MONITOR_COMPONENT}.\r
-// */\r
-// public static final Key KEY_MONITOR_SUFFIX = new KeyOf(String.class, "MONITOR_SUFFIX");\r
-//\r
-// public static final Key KEY_MONITOR_SUBSTITUTIONS = new KeyOf(Map.class, "MONITOR_SUBSTITUTIONS");\r
-// public static final Key KEY_MONITOR_GC = new KeyOf(Graphics2D.class, "MONITOR_GC");\r
-// public static final Key KEY_MONITOR_HEIGHT = new KeyOf(Double.class, "MONITOR_HEIGHT");\r
-// public static final Key KEY_NUMBER_FORMAT = new KeyOf(MetricsFormat.class, "NUMBER_FORMAT");\r
-// public static final Key KEY_TOOLTIP_TEXT = new KeyOf(String.class, "TOOLTIP_TEXT");\r
-//\r
-// /**\r
-// * If this hint is defined, the monitor will force its x-axis to match this\r
-// * angle. If this hint doesn't exist, the monitor will not force x-axis\r
-// * orientation.\r
-// */\r
-// public static final Key KEY_DIRECTION = new KeyOf(Double.class, "MONITOR_DIRECTION");\r
-//\r
-// public static final Key KEY_BORDER_WIDTH = new KeyOf(Double.class, "MONITOR_BORDER");\r
-//\r
-// public static final Key KEY_SG_NODE = new SceneGraphNodeKey(Node.class, "MONITOR_SG_NODE");\r
-//\r
-// final static BasicStroke STROKE = new BasicStroke(1.0f);\r
-//\r
-// public final static Alignment DEFAULT_HORIZONTAL_ALIGN = Alignment.CENTER;\r
-// public final static Alignment DEFAULT_VERTICAL_ALIGN = Alignment.CENTER;\r
-// public final static MetricsFormat DEFAULT_NUMBER_FORMAT = MetricsFormatList.METRICS_DECIMAL;\r
-//\r
-// public final static Color DEFAULT_FILL_COLOR = new Color(224, 224, 224);\r
-// public final static Color DEFAULT_BORDER_COLOR = Color.BLACK;\r
-//\r
-// public final static double DEFAULT_HORIZONTAL_MARGIN = 5.0;\r
-// public final static double DEFAULT_VERTICAL_MARGIN = 2.5;\r
-//\r
-// static Alignment getHorizontalAlignment(IElement e) {\r
-// return ElementUtils.getHintOrDefault(e, ElementHints.KEY_HORIZONTAL_ALIGN, DEFAULT_HORIZONTAL_ALIGN);\r
-// }\r
-//\r
-// static Alignment getVerticalAlignment(IElement e) {\r
-// return ElementUtils.getHintOrDefault(e, ElementHints.KEY_VERTICAL_ALIGN, DEFAULT_VERTICAL_ALIGN);\r
-// }\r
-//\r
-// static MetricsFormat getNumberFormat(IElement e) {\r
-// return ElementUtils.getHintOrDefault(e, KEY_NUMBER_FORMAT, DEFAULT_NUMBER_FORMAT);\r
-// }\r
-//\r
-// static void setNumberFormat(IElement e, MetricsFormat f) {\r
-// ElementUtils.setOrRemoveHint(e, KEY_NUMBER_FORMAT, f);\r
-// }\r
-//\r
-// static double getHorizontalMargin(IElement e) {\r
-// return DEFAULT_HORIZONTAL_MARGIN;\r
-// }\r
-//\r
-// static double getVerticalMargin(IElement e) {\r
-// return DEFAULT_VERTICAL_MARGIN;\r
-// }\r
-//\r
-// static Font getFont(IElement e) {\r
-// return ElementUtils.getHintOrDefault(e, ElementHints.KEY_FONT, FONT);\r
-// }\r
-//\r
-// public static class MonitorHandlerImpl implements MonitorHandler {\r
-// private static final long serialVersionUID = -4258875745321808416L;\r
-// public static final MonitorHandler INSTANCE = new MonitorHandlerImpl();\r
-// }\r
-//\r
-// static class Initializer implements LifeCycle {\r
-// private static final long serialVersionUID = 4404942036933073584L;\r
-//\r
-// IElement parentElement;\r
-// Map<String, String> substitutions;\r
-// Object component;\r
-// String suffix;\r
-// boolean hack;\r
-//\r
-// Initializer(IElement parentElement, Map<String, String> substitutions, Object component, String suffix, boolean hack) {\r
-// this.parentElement = parentElement;\r
-// this.substitutions = substitutions;\r
-// this.component = component;\r
-// this.suffix = suffix;\r
-// this.hack = hack;\r
-// }\r
-//\r
-// @Override\r
-// public void onElementActivated(IDiagram d, IElement e) {\r
-//\r
-// if(!hack) {\r
-//\r
-// hack = true;\r
-//\r
-// Point2D parentPos = ElementUtils.getPos(parentElement);\r
-// Point2D thisPos = ElementUtils.getPos(e);\r
-//\r
-// Move move = e.getElementClass().getSingleItem(Move.class);\r
-// move.moveTo(e, thisPos.getX() - parentPos.getX(), thisPos.getY() - parentPos.getY());\r
-//\r
-// }\r
-//\r
-// }\r
-// @Override\r
-// public void onElementCreated(IElement e) {\r
-// if(parentElement != null) e.setHint(ElementHints.KEY_PARENT_ELEMENT, parentElement);\r
-// if(substitutions != null) e.setHint(KEY_MONITOR_SUBSTITUTIONS, substitutions);\r
-// if(component != null) e.setHint(KEY_MONITOR_COMPONENT, component);\r
-// if(suffix != null) e.setHint(KEY_MONITOR_SUFFIX, suffix);\r
-//\r
-// e.setHint(KEY_DIRECTION, 0.0);\r
-// e.setHint(KEY_NUMBER_FORMAT, DEFAULT_NUMBER_FORMAT);\r
-// //e.setHint(KEY_HORIZONTAL_ALIGN, Alignment.LEADING);\r
-// //e.setHint(KEY_VERTICAL_ALIGN, Alignment.LEADING);\r
-// }\r
-// @Override\r
-// public void onElementDeactivated(IDiagram d, IElement e) {\r
-// }\r
-// @Override\r
-// public void onElementDestroyed(IElement e) {\r
-// }\r
-// };\r
-//\r
-// static String finalText(IElement e) {\r
-// String text = e.getElementClass().getSingleItem(Text.class).getText(e);\r
-// if (text == null)\r
-// return null;\r
-// return substitute(text, e);\r
-// }\r
-//\r
-// public static String editText(IElement e) {\r
-// return substitute("#v1", e);\r
-// }\r
-//\r
-// private static String formValue(IElement e) {\r
-// // TODO: consider using substitute\r
-// Map<String, String> substitutions = e.getHint(KEY_MONITOR_SUBSTITUTIONS);\r
-// if (substitutions != null) {\r
-// String value = substitutions.get("#v1");\r
-// if (substitutions.containsKey("#u1") && substitutions.get("#u1").length() > 0) {\r
-// value += " " + substitutions.get("#u1");\r
-// }\r
-// return value;\r
-// }\r
-// return null;\r
-// }\r
-//\r
-// static String substitute(String text, IElement e) {\r
-// Map<String, String> substitutions = e.getHint(KEY_MONITOR_SUBSTITUTIONS);\r
-// return substitute(text, substitutions);\r
-// }\r
-//\r
-// static String substitute(String text, Map<String, String> substitutions) {\r
-// if (substitutions != null) {\r
-// // TODO: slow as hell\r
-// for(Map.Entry<String, String> entry : substitutions.entrySet()) {\r
-// if (entry.getValue() != null) {\r
-// text = text.replace(entry.getKey(), entry.getValue());\r
-// } else {\r
-// text = text.replace(entry.getKey(), "<null>");\r
-// }\r
-// }\r
-// }\r
-// return text;\r
-// }\r
-//\r
-// public static void update(IElement e) {\r
-// MonitorSGNode node = e.getElementClass().getSingleItem(MonitorSGNode.class);\r
-// node.update(e);\r
-// }\r
-//\r
-// public static void cleanup(IElement e) {\r
-// MonitorSGNode node = e.getElementClass().getSingleItem(MonitorSGNode.class);\r
-// node.cleanup(e);\r
-// }\r
-//\r
-// static final Rectangle2D DEFAULT_BOX = new Rectangle2D.Double(0, 0, 0, 0);\r
-//\r
-// static Shape createMonitor(IElement e) {\r
-// Alignment hAlign = getHorizontalAlignment(e);\r
-// Alignment vAlign = getVerticalAlignment(e);\r
-// double hMargin = getHorizontalMargin(e);\r
-// double vMargin = getVerticalMargin(e);\r
-//\r
-// String text = finalText(e);\r
-// if(text == null) {\r
-// return align(hMargin, vMargin, hAlign, vAlign, DEFAULT_BOX);\r
-// }\r
-//\r
-// Graphics2D g = e.getHint(KEY_MONITOR_GC);\r
-// if(g == null) {\r
-// return align(hMargin, vMargin, hAlign, vAlign, DEFAULT_BOX);\r
-// }\r
-//\r
-// Font f = getFont(e);\r
-// FontMetrics fm = g.getFontMetrics(f);\r
-// Rectangle2D rect = fm.getStringBounds(text, g);\r
-//\r
-// return align(hMargin, vMargin, hAlign, vAlign, rect);\r
-// }\r
-//\r
-// static Shape align(double hMargin, double vMargin, Alignment hAlign, Alignment vAlign, Rectangle2D rect) {\r
-// //System.out.println("align: " + hMargin + ", " + vMargin + ", " + hAlign + ", " + vAlign + ": " + rect);\r
-// double tx = align(hMargin, hAlign, rect.getMinX(), rect.getMaxX());\r
-// double ty = align(vMargin, vAlign, rect.getMinY(), rect.getMaxY());\r
-// //System.out.println(" translate: " + tx + " " + ty);\r
-// double nw = rect.getWidth() + 2*hMargin;\r
-// double nh = rect.getHeight() + 2*vMargin;\r
-// return makePath(tx + rect.getMinX(), ty + rect.getMinY(), nw, nh);\r
-// }\r
-//\r
-// static double align(double margin, Alignment align, double min, double max) {\r
-// double s = max - min;\r
-// switch (align) {\r
-// case LEADING:\r
-// return -min;\r
-// case TRAILING:\r
-// return -s - 2 * margin - min;\r
-// case CENTER:\r
-// return -0.5 * s - margin - min;\r
-// default:\r
-// return 0;\r
-// }\r
-// }\r
-//\r
-// static Path2D makePath(double x, double y, double w, double h) {\r
-// Path2D path = new Path2D.Double();\r
-// path.moveTo(x, y);\r
-// path.lineTo(x+w, y);\r
-// path.lineTo(x+w, y+h);\r
-// path.lineTo(x, y+h);\r
-// path.closePath();\r
-// return path;\r
-// }\r
-//\r
-// public static final Shape BOX_SHAPE = new Rectangle(-1, -1, 2, 2);\r
-//\r
-// public static class MonitorSGNode implements SceneGraph, InternalSize, Outline {\r
-// private static final long serialVersionUID = -106278359626957687L;\r
-//\r
-// static final MonitorSGNode INSTANCE = new MonitorSGNode();\r
-//\r
-// @Override\r
-// public void init(final IElement e, final G2DParentNode parent) {\r
-// // Create node if it doesn't exist yet\r
-// MonitorNode node = (MonitorNode)e.getHint(KEY_SG_NODE);\r
-// if(node == null || node.getBounds() == null || node.getParent() != parent) {\r
-// node = parent.addNode(ElementUtils.generateNodeId(e), MonitorNode.class);\r
-// e.setHint(KEY_SG_NODE, node);\r
-//\r
-// node.setActionListener(new ActionListener() {\r
-// @Override\r
-// public void actionPerformed(ActionEvent event) {\r
-// TextEditor editor = e.getElementClass().getAtMostOneItemOfClass(TextEditor.class);\r
-// if (editor != null) {\r
-// Modifier modifier = editor.getModifier(e);\r
-// if (modifier != null) {\r
-// String newValue = event.getActionCommand();\r
-// String error = modifier.isValid(e, newValue);\r
-//\r
-// if (error == null) {\r
-// // Only modify if the modification was not\r
-// // cancelled and the value is valid.\r
-// modifier.modify(e, newValue);\r
-// } else {\r
-// // TODO: show error somehow, possibly through status bar\r
-//\r
-// // Make sure that the monitor content gets\r
-// // reset to its previous value.\r
-// MonitorNode node = e.getHint(KEY_SG_NODE);\r
-// if (node != null)\r
-// node.setText(formValue(e));\r
-// }\r
-// }\r
-// }\r
-//\r
-//// final Text t = e.getElementClass().getAtMostOneItemOfClass(Text.class);\r
-//// t.setText(e, event.getActionCommand()); // FIXME\r
-// }});\r
-// node.setSize(50, 22);\r
-// Double border_width = (Double)e.getHint(KEY_BORDER_WIDTH);\r
-// if(border_width == null) border_width = 0.1;\r
-// \r
-// node.setBorderWidth(border_width);\r
-//\r
-// Rectangle2D bounds = (Rectangle2D)e.getHint(ElementHints.KEY_BOUNDS);\r
-// if(bounds != null) node.setBounds(bounds);\r
-// }\r
-// update(e);\r
-// }\r
-//\r
-// public void update(IElement e) {\r
-// String value = null;\r
-//\r
-// final Text t = e.getElementClass().getAtMostOneItemOfClass(Text.class);\r
-// assert(t != null);\r
-//\r
-// value = formValue(e);\r
-//\r
-// MonitorNode node = (MonitorNode) e.getHint(KEY_SG_NODE);\r
-// if (node != null && value != null) {\r
-// node.setText(value);\r
-// Object component = e.getHint(KEY_MONITOR_COMPONENT);\r
-// if (component != null) {\r
-// node.setEditable(true);\r
-// } else {\r
-// node.setEditable(false);\r
-// }\r
-//\r
-// // FIXME: set only if changed .. (but quickfix is not to clone)\r
-// Font font = ElementUtils.getTextFont(e);\r
-// if (node.getFont() != font) { // Don't update if we have a same object\r
-// node.setFont(font);\r
-// }\r
-// Color color = ElementUtils.getTextColor(e);\r
-// node.setColor(new Color(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha()));\r
-// String tt = (String) e.getHint(KEY_TOOLTIP_TEXT);\r
-// if (tt != null)\r
-// node.setToolTipText(new String(tt));\r
-// }\r
-// }\r
-//\r
-// @Override\r
-// public void cleanup(IElement e) {\r
-// MonitorNode node = (MonitorNode)e.removeHint(KEY_SG_NODE);\r
-// if (node != null)\r
-// node.remove();\r
-// }\r
-//\r
-// @Override\r
-// public Rectangle2D getBounds(IElement e, Rectangle2D size) {\r
-// Rectangle2D shape = new Rectangle2D.Double(0, 0, 0, 0);\r
-//\r
-// MonitorNode node = (MonitorNode)e.getHint(KEY_SG_NODE);\r
-// if(node != null && node.getBounds() != null) {\r
-// shape = node.getBounds().getBounds2D();\r
-// }\r
-//\r
-// if(size != null) size.setRect(shape);\r
-// return shape;\r
-// }\r
-//\r
-// @Override\r
-// public Shape getElementShape(IElement e) {\r
-// Shape shape = new Rectangle2D.Double(0, 0, 0, 0);\r
-//\r
-// MonitorNode node = (MonitorNode)e.getHint(KEY_SG_NODE);\r
-// if(node != null && node.getBounds() != null) {\r
-// shape = node.getBounds();\r
-// }\r
-//\r
-// return shape;\r
-// }\r
-//\r
-// }\r
-//\r
-// public static class Transformer implements Transform, Move, Rotate, Scale, LifeCycle {\r
-//\r
-// private static final long serialVersionUID = -3704887325602085677L;\r
-//\r
-// public static final Transformer INSTANCE = new Transformer(null);\r
-//\r
-// Double aspectRatio;\r
-//\r
-// public Transformer() {\r
-// this(null);\r
-// }\r
-//\r
-// public Transformer(Double aspectRatio) {\r
-// this.aspectRatio = aspectRatio;\r
-// }\r
-//\r
-// @Override\r
-// public Double getFixedAspectRatio(IElement e) {\r
-// return aspectRatio;\r
-// }\r
-//\r
-// @Override\r
-// public Point2D getScale(IElement e) {\r
-// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
-// return _getScale(at);\r
-// }\r
-//\r
-// @Override\r
-// public void setScale(IElement e, Point2D newScale) {\r
-// // Doesn't work for monitors.\r
-// Point2D oldScale = getScale(e);\r
-// double sx = newScale.getX() / oldScale.getX();\r
-// double sy = newScale.getY() / oldScale.getY();\r
-// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
-// at = new AffineTransform(at);\r
-// at.scale(sx, sy);\r
-// e.setHint(ElementHints.KEY_TRANSFORM, at);\r
-// }\r
-//\r
-// @Override\r
-// public Point2D getMaximumScale(IElement e) {\r
-// return null;\r
-// }\r
-//\r
-// @Override\r
-// public Point2D getMinimumScale(IElement e) {\r
-// return null;\r
-// }\r
-//\r
-// private static Point2D _getScale(AffineTransform at) {\r
-// double m00 = at.getScaleX();\r
-// double m11 = at.getScaleY();\r
-// double m10 = at.getShearY();\r
-// double m01 = at.getShearX();\r
-// // Project unit vector to canvas\r
-// double sx = Math.sqrt(m00 * m00 + m10 * m10);\r
-// double sy = Math.sqrt(m01 * m01 + m11 * m11);\r
-// return new Point2D.Double(sx, sy);\r
-// }\r
-//\r
-// @Override\r
-// public void rotate(IElement e, double theta, Point2D origin) {\r
-// if (Double.isNaN(theta)) return;\r
-// theta = Math.toDegrees(theta);\r
-// Double angle = e.getHint(KEY_DIRECTION);\r
-// double newAngle = angle != null ? angle+theta : theta;\r
-// newAngle = Math.IEEEremainder(newAngle, 360.0);\r
-// e.setHint(KEY_DIRECTION, newAngle);\r
-// }\r
-//\r
-// @Override\r
-// public double getAngle(IElement e) {\r
-// Double angle = e.getHint(KEY_DIRECTION);\r
-// return angle != null ? Math.toRadians(angle) : 0;\r
-// }\r
-//\r
-// @Override\r
-// public Point2D getPosition(IElement e) {\r
-// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
-// Point2D p = new Point2D.Double(at.getTranslateX(), at.getTranslateY());\r
-// return p;\r
-// }\r
-//\r
-// @Override\r
-// public void moveTo(IElement e, double x, double y) {\r
-// AffineTransform origAt = e.getHint(ElementHints.KEY_TRANSFORM);\r
-// double oldX = origAt.getTranslateX();\r
-// double oldY = origAt.getTranslateY();\r
-// AffineTransform move = AffineTransform.getTranslateInstance(x-oldX, y-oldY);\r
-// AffineTransform at2 = new AffineTransform(origAt);\r
-// at2.preConcatenate(move);\r
-// e.setHint(ElementHints.KEY_TRANSFORM, at2);\r
-// }\r
-//\r
-// @Override\r
-// public AffineTransform getTransform(IElement e) {\r
-// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
-//\r
-// IElement parentElement = e.getHint(ElementHints.KEY_PARENT_ELEMENT);\r
-// if (parentElement == null)\r
-// return at;\r
-//\r
-// Transform parentTransform = parentElement.getElementClass().getSingleItem(Transform.class);\r
-// assert(parentTransform!=null);\r
-//\r
-// AffineTransform result = (AffineTransform)at.clone();\r
-// result.preConcatenate(parentTransform.getTransform(parentElement));\r
-//\r
-// return result;\r
-// }\r
-//\r
-// @Override\r
-// public void setTransform(IElement e, AffineTransform at) {\r
-// e.setHint(ElementHints.KEY_TRANSFORM, at.clone());\r
-// }\r
-//\r
-// @Override\r
-// public void onElementActivated(IDiagram d, IElement e) {\r
-// }\r
-//\r
-// @Override\r
-// public void onElementCreated(IElement e) {\r
-// e.setHint(ElementHints.KEY_TRANSFORM, new AffineTransform());\r
-// }\r
-//\r
-// @Override\r
-// public void onElementDeactivated(IDiagram d, IElement e) {\r
-// }\r
-//\r
-// @Override\r
-// public void onElementDestroyed(IElement e) {\r
-//// List<SceneGraph> nodeHandlers = e.getElementClass().getItemsByClass(SceneGraph.class);\r
-//// for(SceneGraph n : nodeHandlers) {\r
-//// System.out.println("element gone:"+e);\r
-//// n.cleanup(e);\r
-//// }\r
-// }\r
-// }\r
-//\r
-// static double getOrientationDelta(IElement e, AffineTransform tr) {\r
-// Double angle = e.getHint(KEY_DIRECTION);\r
-// if (angle == null || Double.isNaN(angle))\r
-// return Double.NaN;\r
-// double angrad = Math.toRadians(angle);\r
-//\r
-// Vector2d forcedAxis = new Vector2d(Math.cos(angrad), Math.sin(angrad));\r
-// Vector2d x = new Vector2d(tr.getScaleX(), tr.getShearX());\r
-// forcedAxis.normalize();\r
-// x.normalize();\r
-// double cosa = forcedAxis.dot(x);\r
-// double delta = Math.acos(cosa);\r
-// return delta;\r
-// }\r
-//\r
-// static class MonitorImageFactory implements IFactory<Image> {\r
-// private double staticScaleX = 1, staticScaleY = 1;\r
-//\r
-// public MonitorImageFactory(double staticScaleX, double staticScaleY) {\r
-// this.staticScaleX = staticScaleX;\r
-// this.staticScaleY = staticScaleY;\r
-// }\r
-//\r
-// @Override\r
-// public Image get() throws ProvisionException {\r
-// return new AbstractImage() {\r
-// Shape path = align(DEFAULT_HORIZONTAL_MARGIN, DEFAULT_VERTICAL_MARGIN, DEFAULT_HORIZONTAL_ALIGN, DEFAULT_VERTICAL_ALIGN,\r
-// new Rectangle2D.Double(0, 0, 50*staticScaleX, 22*staticScaleY));\r
-//\r
-// @Override\r
-// public Rectangle2D getBounds() {\r
-// return path.getBounds2D();\r
-// }\r
-//\r
-// @Override\r
-// public EnumSet<Feature> getFeatures() {\r
-// return EnumSet.of(Feature.Vector);\r
-// }\r
-//\r
-// @Override\r
-// public Shape getOutline() {\r
-// return path;\r
-// }\r
-//\r
-// @Override\r
-// public Node init(G2DParentNode parent) {\r
-// MonitorNode node = parent.getOrCreateNode(""+hashCode(), MonitorNode.class);\r
-// node.setText("");\r
-// node.setSize(50, 22);\r
-// node.setBorderWidth(1);\r
-// node.setText("Drop Me");\r
-// node.setTransform(AffineTransform.getScaleInstance(staticScaleX, staticScaleY));\r
-// return node;\r
-// }\r
-// };\r
-// }\r
-// }\r
-//\r
-// static final IProvider<Image> MONITOR_IMAGE =\r
-// ProviderUtils.reference(\r
-// ProviderUtils.cache(\r
-// ProviderUtils.rasterize(\r
-// new MonitorImageFactory(0.5, 0.5)\r
-// )));\r
-//\r
-// static final StaticSymbol MONITOR_SYMBOL = new StaticSymbolImpl( MONITOR_IMAGE.get() );\r
-//\r
-// static final FillColor FILL_COLOR = new FillColorImpl(DEFAULT_FILL_COLOR);\r
-//\r
-// public static final ElementClass MONITOR_CLASS =\r
-// ElementClass.compile(\r
-// MonitorHandlerImpl.INSTANCE,\r
-// Transformer.INSTANCE,\r
-// BorderColorImpl.BLACK,\r
-// FILL_COLOR,\r
-// MonitorSGNode.INSTANCE,\r
-// TextImpl.INSTANCE,\r
-// TextEditorImpl.INSTANCE,\r
-// TextFontImpl.DEFAULT,\r
-// TextColorImpl.BLACK,\r
-// SimpleElementLayers.INSTANCE,\r
-// MONITOR_SYMBOL\r
-// );\r
-//\r
-// // staticScale{X,Y} define the scale of the static monitor image\r
-// public static ElementClass create(IElement parentElement, Map<String, String> substitutions, Object component, String suffix, double staticScaleX, double staticScaleY, ElementHandler... extraHandlers) {\r
-// // Bit of a hack to be able to define the scale\r
-// IProvider<Image> staticMonitorSymbolProvider = ProviderUtils.reference(\r
-// ProviderUtils.cache(\r
-// ProviderUtils\r
-// .rasterize(\r
-// new MonitorImageFactory(staticScaleX, staticScaleY))));\r
-// StaticSymbol staticMonitorSymbol = new StaticSymbolImpl( staticMonitorSymbolProvider.get() );\r
-// return ElementClass.compile(\r
-// new Initializer(parentElement, substitutions, component, suffix, parentElement != null ? false : true),\r
-// MonitorHandlerImpl.INSTANCE,\r
-// Transformer.INSTANCE,\r
-// BorderColorImpl.BLACK,\r
-// FILL_COLOR,\r
-// MonitorSGNode.INSTANCE,\r
-// TextImpl.INSTANCE,\r
-// TextEditorImpl.INSTANCE,\r
-// TextFontImpl.DEFAULT,\r
-// TextColorImpl.BLACK,\r
-// SimpleElementLayers.INSTANCE,\r
-// staticMonitorSymbol\r
-// ).newClassWith(extraHandlers);\r
-// }\r
-//\r
-//}\r
+///*******************************************************************************
+// * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+// * in Industry THTH ry.
+// * All rights reserved. This program and the accompanying materials
+// * are made available under the terms of the Eclipse Public License v1.0
+// * which accompanies this distribution, and is available at
+// * http://www.eclipse.org/legal/epl-v10.html
+// *
+// * Contributors:
+// * VTT Technical Research Centre of Finland - initial API and implementation
+// *******************************************************************************/
+//package org.simantics.g2d.elementclass;
+//
+//import java.awt.BasicStroke;
+//import java.awt.Color;
+//import java.awt.Font;
+//import java.awt.FontMetrics;
+//import java.awt.Graphics2D;
+//import java.awt.Rectangle;
+//import java.awt.Shape;
+//import java.awt.event.ActionEvent;
+//import java.awt.event.ActionListener;
+//import java.awt.geom.AffineTransform;
+//import java.awt.geom.Path2D;
+//import java.awt.geom.Point2D;
+//import java.awt.geom.Rectangle2D;
+//import java.util.EnumSet;
+//import java.util.Map;
+//
+//import javax.vecmath.Vector2d;
+//
+//import org.simantics.g2d.diagram.IDiagram;
+//import org.simantics.g2d.element.ElementClass;
+//import org.simantics.g2d.element.ElementHints;
+//import org.simantics.g2d.element.ElementUtils;
+//import org.simantics.g2d.element.IElement;
+//import org.simantics.g2d.element.SceneGraphNodeKey;
+//import org.simantics.g2d.element.handler.ElementHandler;
+//import org.simantics.g2d.element.handler.FillColor;
+//import org.simantics.g2d.element.handler.InternalSize;
+//import org.simantics.g2d.element.handler.LifeCycle;
+//import org.simantics.g2d.element.handler.Move;
+//import org.simantics.g2d.element.handler.Outline;
+//import org.simantics.g2d.element.handler.Rotate;
+//import org.simantics.g2d.element.handler.Scale;
+//import org.simantics.g2d.element.handler.SceneGraph;
+//import org.simantics.g2d.element.handler.StaticSymbol;
+//import org.simantics.g2d.element.handler.Text;
+//import org.simantics.g2d.element.handler.TextEditor;
+//import org.simantics.g2d.element.handler.Transform;
+//import org.simantics.g2d.element.handler.TextEditor.Modifier;
+//import org.simantics.g2d.element.handler.impl.BorderColorImpl;
+//import org.simantics.g2d.element.handler.impl.FillColorImpl;
+//import org.simantics.g2d.element.handler.impl.SimpleElementLayers;
+//import org.simantics.g2d.element.handler.impl.StaticSymbolImpl;
+//import org.simantics.g2d.element.handler.impl.TextColorImpl;
+//import org.simantics.g2d.element.handler.impl.TextEditorImpl;
+//import org.simantics.g2d.element.handler.impl.TextFontImpl;
+//import org.simantics.g2d.element.handler.impl.TextImpl;
+//import org.simantics.g2d.image.Image;
+//import org.simantics.g2d.image.ProviderUtils;
+//import org.simantics.g2d.image.impl.AbstractImage;
+//import org.simantics.g2d.utils.Alignment;
+//import org.simantics.scenegraph.Node;
+//import org.simantics.scenegraph.g2d.G2DParentNode;
+//import org.simantics.scenegraph.g2d.nodes.MonitorNode;
+//import org.simantics.utils.datastructures.cache.IFactory;
+//import org.simantics.utils.datastructures.cache.IProvider;
+//import org.simantics.utils.datastructures.cache.ProvisionException;
+//import org.simantics.utils.datastructures.hints.IHintContext.Key;
+//import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
+//import org.simantics.utils.strings.format.MetricsFormat;
+//import org.simantics.utils.strings.format.MetricsFormatList;
+//
+///**
+// * @author Tuukka Lehtonen
+// */
+//public class MonitorClass {
+//
+// static final Font FONT = Font.decode("Helvetica 12");
+//
+// /**
+// * Back-end specific object describing the monitored component.
+// */
+// public static final Key KEY_MONITOR_COMPONENT = new KeyOf(Object.class, "MONITOR_COMPONENT");
+//
+// /**
+// * The valuation suffix string describing the monitored variable of the
+// * component described by {@link #KEY_MONITOR_COMPONENT}.
+// */
+// public static final Key KEY_MONITOR_SUFFIX = new KeyOf(String.class, "MONITOR_SUFFIX");
+//
+// public static final Key KEY_MONITOR_SUBSTITUTIONS = new KeyOf(Map.class, "MONITOR_SUBSTITUTIONS");
+// public static final Key KEY_MONITOR_GC = new KeyOf(Graphics2D.class, "MONITOR_GC");
+// public static final Key KEY_MONITOR_HEIGHT = new KeyOf(Double.class, "MONITOR_HEIGHT");
+// public static final Key KEY_NUMBER_FORMAT = new KeyOf(MetricsFormat.class, "NUMBER_FORMAT");
+// public static final Key KEY_TOOLTIP_TEXT = new KeyOf(String.class, "TOOLTIP_TEXT");
+//
+// /**
+// * If this hint is defined, the monitor will force its x-axis to match this
+// * angle. If this hint doesn't exist, the monitor will not force x-axis
+// * orientation.
+// */
+// public static final Key KEY_DIRECTION = new KeyOf(Double.class, "MONITOR_DIRECTION");
+//
+// public static final Key KEY_BORDER_WIDTH = new KeyOf(Double.class, "MONITOR_BORDER");
+//
+// public static final Key KEY_SG_NODE = new SceneGraphNodeKey(Node.class, "MONITOR_SG_NODE");
+//
+// final static BasicStroke STROKE = new BasicStroke(1.0f);
+//
+// public final static Alignment DEFAULT_HORIZONTAL_ALIGN = Alignment.CENTER;
+// public final static Alignment DEFAULT_VERTICAL_ALIGN = Alignment.CENTER;
+// public final static MetricsFormat DEFAULT_NUMBER_FORMAT = MetricsFormatList.METRICS_DECIMAL;
+//
+// public final static Color DEFAULT_FILL_COLOR = new Color(224, 224, 224);
+// public final static Color DEFAULT_BORDER_COLOR = Color.BLACK;
+//
+// public final static double DEFAULT_HORIZONTAL_MARGIN = 5.0;
+// public final static double DEFAULT_VERTICAL_MARGIN = 2.5;
+//
+// static Alignment getHorizontalAlignment(IElement e) {
+// return ElementUtils.getHintOrDefault(e, ElementHints.KEY_HORIZONTAL_ALIGN, DEFAULT_HORIZONTAL_ALIGN);
+// }
+//
+// static Alignment getVerticalAlignment(IElement e) {
+// return ElementUtils.getHintOrDefault(e, ElementHints.KEY_VERTICAL_ALIGN, DEFAULT_VERTICAL_ALIGN);
+// }
+//
+// static MetricsFormat getNumberFormat(IElement e) {
+// return ElementUtils.getHintOrDefault(e, KEY_NUMBER_FORMAT, DEFAULT_NUMBER_FORMAT);
+// }
+//
+// static void setNumberFormat(IElement e, MetricsFormat f) {
+// ElementUtils.setOrRemoveHint(e, KEY_NUMBER_FORMAT, f);
+// }
+//
+// static double getHorizontalMargin(IElement e) {
+// return DEFAULT_HORIZONTAL_MARGIN;
+// }
+//
+// static double getVerticalMargin(IElement e) {
+// return DEFAULT_VERTICAL_MARGIN;
+// }
+//
+// static Font getFont(IElement e) {
+// return ElementUtils.getHintOrDefault(e, ElementHints.KEY_FONT, FONT);
+// }
+//
+// public static class MonitorHandlerImpl implements MonitorHandler {
+// private static final long serialVersionUID = -4258875745321808416L;
+// public static final MonitorHandler INSTANCE = new MonitorHandlerImpl();
+// }
+//
+// static class Initializer implements LifeCycle {
+// private static final long serialVersionUID = 4404942036933073584L;
+//
+// IElement parentElement;
+// Map<String, String> substitutions;
+// Object component;
+// String suffix;
+// boolean hack;
+//
+// Initializer(IElement parentElement, Map<String, String> substitutions, Object component, String suffix, boolean hack) {
+// this.parentElement = parentElement;
+// this.substitutions = substitutions;
+// this.component = component;
+// this.suffix = suffix;
+// this.hack = hack;
+// }
+//
+// @Override
+// public void onElementActivated(IDiagram d, IElement e) {
+//
+// if(!hack) {
+//
+// hack = true;
+//
+// Point2D parentPos = ElementUtils.getPos(parentElement);
+// Point2D thisPos = ElementUtils.getPos(e);
+//
+// Move move = e.getElementClass().getSingleItem(Move.class);
+// move.moveTo(e, thisPos.getX() - parentPos.getX(), thisPos.getY() - parentPos.getY());
+//
+// }
+//
+// }
+// @Override
+// public void onElementCreated(IElement e) {
+// if(parentElement != null) e.setHint(ElementHints.KEY_PARENT_ELEMENT, parentElement);
+// if(substitutions != null) e.setHint(KEY_MONITOR_SUBSTITUTIONS, substitutions);
+// if(component != null) e.setHint(KEY_MONITOR_COMPONENT, component);
+// if(suffix != null) e.setHint(KEY_MONITOR_SUFFIX, suffix);
+//
+// e.setHint(KEY_DIRECTION, 0.0);
+// e.setHint(KEY_NUMBER_FORMAT, DEFAULT_NUMBER_FORMAT);
+// //e.setHint(KEY_HORIZONTAL_ALIGN, Alignment.LEADING);
+// //e.setHint(KEY_VERTICAL_ALIGN, Alignment.LEADING);
+// }
+// @Override
+// public void onElementDeactivated(IDiagram d, IElement e) {
+// }
+// @Override
+// public void onElementDestroyed(IElement e) {
+// }
+// };
+//
+// static String finalText(IElement e) {
+// String text = e.getElementClass().getSingleItem(Text.class).getText(e);
+// if (text == null)
+// return null;
+// return substitute(text, e);
+// }
+//
+// public static String editText(IElement e) {
+// return substitute("#v1", e);
+// }
+//
+// private static String formValue(IElement e) {
+// // TODO: consider using substitute
+// Map<String, String> substitutions = e.getHint(KEY_MONITOR_SUBSTITUTIONS);
+// if (substitutions != null) {
+// String value = substitutions.get("#v1");
+// if (substitutions.containsKey("#u1") && substitutions.get("#u1").length() > 0) {
+// value += " " + substitutions.get("#u1");
+// }
+// return value;
+// }
+// return null;
+// }
+//
+// static String substitute(String text, IElement e) {
+// Map<String, String> substitutions = e.getHint(KEY_MONITOR_SUBSTITUTIONS);
+// return substitute(text, substitutions);
+// }
+//
+// static String substitute(String text, Map<String, String> substitutions) {
+// if (substitutions != null) {
+// // TODO: slow as hell
+// for(Map.Entry<String, String> entry : substitutions.entrySet()) {
+// if (entry.getValue() != null) {
+// text = text.replace(entry.getKey(), entry.getValue());
+// } else {
+// text = text.replace(entry.getKey(), "<null>");
+// }
+// }
+// }
+// return text;
+// }
+//
+// public static void update(IElement e) {
+// MonitorSGNode node = e.getElementClass().getSingleItem(MonitorSGNode.class);
+// node.update(e);
+// }
+//
+// public static void cleanup(IElement e) {
+// MonitorSGNode node = e.getElementClass().getSingleItem(MonitorSGNode.class);
+// node.cleanup(e);
+// }
+//
+// static final Rectangle2D DEFAULT_BOX = new Rectangle2D.Double(0, 0, 0, 0);
+//
+// static Shape createMonitor(IElement e) {
+// Alignment hAlign = getHorizontalAlignment(e);
+// Alignment vAlign = getVerticalAlignment(e);
+// double hMargin = getHorizontalMargin(e);
+// double vMargin = getVerticalMargin(e);
+//
+// String text = finalText(e);
+// if(text == null) {
+// return align(hMargin, vMargin, hAlign, vAlign, DEFAULT_BOX);
+// }
+//
+// Graphics2D g = e.getHint(KEY_MONITOR_GC);
+// if(g == null) {
+// return align(hMargin, vMargin, hAlign, vAlign, DEFAULT_BOX);
+// }
+//
+// Font f = getFont(e);
+// FontMetrics fm = g.getFontMetrics(f);
+// Rectangle2D rect = fm.getStringBounds(text, g);
+//
+// return align(hMargin, vMargin, hAlign, vAlign, rect);
+// }
+//
+// static Shape align(double hMargin, double vMargin, Alignment hAlign, Alignment vAlign, Rectangle2D rect) {
+// //System.out.println("align: " + hMargin + ", " + vMargin + ", " + hAlign + ", " + vAlign + ": " + rect);
+// double tx = align(hMargin, hAlign, rect.getMinX(), rect.getMaxX());
+// double ty = align(vMargin, vAlign, rect.getMinY(), rect.getMaxY());
+// //System.out.println(" translate: " + tx + " " + ty);
+// double nw = rect.getWidth() + 2*hMargin;
+// double nh = rect.getHeight() + 2*vMargin;
+// return makePath(tx + rect.getMinX(), ty + rect.getMinY(), nw, nh);
+// }
+//
+// static double align(double margin, Alignment align, double min, double max) {
+// double s = max - min;
+// switch (align) {
+// case LEADING:
+// return -min;
+// case TRAILING:
+// return -s - 2 * margin - min;
+// case CENTER:
+// return -0.5 * s - margin - min;
+// default:
+// return 0;
+// }
+// }
+//
+// static Path2D makePath(double x, double y, double w, double h) {
+// Path2D path = new Path2D.Double();
+// path.moveTo(x, y);
+// path.lineTo(x+w, y);
+// path.lineTo(x+w, y+h);
+// path.lineTo(x, y+h);
+// path.closePath();
+// return path;
+// }
+//
+// public static final Shape BOX_SHAPE = new Rectangle(-1, -1, 2, 2);
+//
+// public static class MonitorSGNode implements SceneGraph, InternalSize, Outline {
+// private static final long serialVersionUID = -106278359626957687L;
+//
+// static final MonitorSGNode INSTANCE = new MonitorSGNode();
+//
+// @Override
+// public void init(final IElement e, final G2DParentNode parent) {
+// // Create node if it doesn't exist yet
+// MonitorNode node = (MonitorNode)e.getHint(KEY_SG_NODE);
+// if(node == null || node.getBounds() == null || node.getParent() != parent) {
+// node = parent.addNode(ElementUtils.generateNodeId(e), MonitorNode.class);
+// e.setHint(KEY_SG_NODE, node);
+//
+// node.setActionListener(new ActionListener() {
+// @Override
+// public void actionPerformed(ActionEvent event) {
+// TextEditor editor = e.getElementClass().getAtMostOneItemOfClass(TextEditor.class);
+// if (editor != null) {
+// Modifier modifier = editor.getModifier(e);
+// if (modifier != null) {
+// String newValue = event.getActionCommand();
+// String error = modifier.isValid(e, newValue);
+//
+// if (error == null) {
+// // Only modify if the modification was not
+// // cancelled and the value is valid.
+// modifier.modify(e, newValue);
+// } else {
+// // TODO: show error somehow, possibly through status bar
+//
+// // Make sure that the monitor content gets
+// // reset to its previous value.
+// MonitorNode node = e.getHint(KEY_SG_NODE);
+// if (node != null)
+// node.setText(formValue(e));
+// }
+// }
+// }
+//
+//// final Text t = e.getElementClass().getAtMostOneItemOfClass(Text.class);
+//// t.setText(e, event.getActionCommand()); // FIXME
+// }});
+// node.setSize(50, 22);
+// Double border_width = (Double)e.getHint(KEY_BORDER_WIDTH);
+// if(border_width == null) border_width = 0.1;
+//
+// node.setBorderWidth(border_width);
+//
+// Rectangle2D bounds = (Rectangle2D)e.getHint(ElementHints.KEY_BOUNDS);
+// if(bounds != null) node.setBounds(bounds);
+// }
+// update(e);
+// }
+//
+// public void update(IElement e) {
+// String value = null;
+//
+// final Text t = e.getElementClass().getAtMostOneItemOfClass(Text.class);
+// assert(t != null);
+//
+// value = formValue(e);
+//
+// MonitorNode node = (MonitorNode) e.getHint(KEY_SG_NODE);
+// if (node != null && value != null) {
+// node.setText(value);
+// Object component = e.getHint(KEY_MONITOR_COMPONENT);
+// if (component != null) {
+// node.setEditable(true);
+// } else {
+// node.setEditable(false);
+// }
+//
+// // FIXME: set only if changed .. (but quickfix is not to clone)
+// Font font = ElementUtils.getTextFont(e);
+// if (node.getFont() != font) { // Don't update if we have a same object
+// node.setFont(font);
+// }
+// Color color = ElementUtils.getTextColor(e);
+// node.setColor(new Color(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha()));
+// String tt = (String) e.getHint(KEY_TOOLTIP_TEXT);
+// if (tt != null)
+// node.setToolTipText(new String(tt));
+// }
+// }
+//
+// @Override
+// public void cleanup(IElement e) {
+// MonitorNode node = (MonitorNode)e.removeHint(KEY_SG_NODE);
+// if (node != null)
+// node.remove();
+// }
+//
+// @Override
+// public Rectangle2D getBounds(IElement e, Rectangle2D size) {
+// Rectangle2D shape = new Rectangle2D.Double(0, 0, 0, 0);
+//
+// MonitorNode node = (MonitorNode)e.getHint(KEY_SG_NODE);
+// if(node != null && node.getBounds() != null) {
+// shape = node.getBounds().getBounds2D();
+// }
+//
+// if(size != null) size.setRect(shape);
+// return shape;
+// }
+//
+// @Override
+// public Shape getElementShape(IElement e) {
+// Shape shape = new Rectangle2D.Double(0, 0, 0, 0);
+//
+// MonitorNode node = (MonitorNode)e.getHint(KEY_SG_NODE);
+// if(node != null && node.getBounds() != null) {
+// shape = node.getBounds();
+// }
+//
+// return shape;
+// }
+//
+// }
+//
+// public static class Transformer implements Transform, Move, Rotate, Scale, LifeCycle {
+//
+// private static final long serialVersionUID = -3704887325602085677L;
+//
+// public static final Transformer INSTANCE = new Transformer(null);
+//
+// Double aspectRatio;
+//
+// public Transformer() {
+// this(null);
+// }
+//
+// public Transformer(Double aspectRatio) {
+// this.aspectRatio = aspectRatio;
+// }
+//
+// @Override
+// public Double getFixedAspectRatio(IElement e) {
+// return aspectRatio;
+// }
+//
+// @Override
+// public Point2D getScale(IElement e) {
+// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);
+// return _getScale(at);
+// }
+//
+// @Override
+// public void setScale(IElement e, Point2D newScale) {
+// // Doesn't work for monitors.
+// Point2D oldScale = getScale(e);
+// double sx = newScale.getX() / oldScale.getX();
+// double sy = newScale.getY() / oldScale.getY();
+// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);
+// at = new AffineTransform(at);
+// at.scale(sx, sy);
+// e.setHint(ElementHints.KEY_TRANSFORM, at);
+// }
+//
+// @Override
+// public Point2D getMaximumScale(IElement e) {
+// return null;
+// }
+//
+// @Override
+// public Point2D getMinimumScale(IElement e) {
+// return null;
+// }
+//
+// private static Point2D _getScale(AffineTransform at) {
+// double m00 = at.getScaleX();
+// double m11 = at.getScaleY();
+// double m10 = at.getShearY();
+// double m01 = at.getShearX();
+// // Project unit vector to canvas
+// double sx = Math.sqrt(m00 * m00 + m10 * m10);
+// double sy = Math.sqrt(m01 * m01 + m11 * m11);
+// return new Point2D.Double(sx, sy);
+// }
+//
+// @Override
+// public void rotate(IElement e, double theta, Point2D origin) {
+// if (Double.isNaN(theta)) return;
+// theta = Math.toDegrees(theta);
+// Double angle = e.getHint(KEY_DIRECTION);
+// double newAngle = angle != null ? angle+theta : theta;
+// newAngle = Math.IEEEremainder(newAngle, 360.0);
+// e.setHint(KEY_DIRECTION, newAngle);
+// }
+//
+// @Override
+// public double getAngle(IElement e) {
+// Double angle = e.getHint(KEY_DIRECTION);
+// return angle != null ? Math.toRadians(angle) : 0;
+// }
+//
+// @Override
+// public Point2D getPosition(IElement e) {
+// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);
+// Point2D p = new Point2D.Double(at.getTranslateX(), at.getTranslateY());
+// return p;
+// }
+//
+// @Override
+// public void moveTo(IElement e, double x, double y) {
+// AffineTransform origAt = e.getHint(ElementHints.KEY_TRANSFORM);
+// double oldX = origAt.getTranslateX();
+// double oldY = origAt.getTranslateY();
+// AffineTransform move = AffineTransform.getTranslateInstance(x-oldX, y-oldY);
+// AffineTransform at2 = new AffineTransform(origAt);
+// at2.preConcatenate(move);
+// e.setHint(ElementHints.KEY_TRANSFORM, at2);
+// }
+//
+// @Override
+// public AffineTransform getTransform(IElement e) {
+// AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);
+//
+// IElement parentElement = e.getHint(ElementHints.KEY_PARENT_ELEMENT);
+// if (parentElement == null)
+// return at;
+//
+// Transform parentTransform = parentElement.getElementClass().getSingleItem(Transform.class);
+// assert(parentTransform!=null);
+//
+// AffineTransform result = (AffineTransform)at.clone();
+// result.preConcatenate(parentTransform.getTransform(parentElement));
+//
+// return result;
+// }
+//
+// @Override
+// public void setTransform(IElement e, AffineTransform at) {
+// e.setHint(ElementHints.KEY_TRANSFORM, at.clone());
+// }
+//
+// @Override
+// public void onElementActivated(IDiagram d, IElement e) {
+// }
+//
+// @Override
+// public void onElementCreated(IElement e) {
+// e.setHint(ElementHints.KEY_TRANSFORM, new AffineTransform());
+// }
+//
+// @Override
+// public void onElementDeactivated(IDiagram d, IElement e) {
+// }
+//
+// @Override
+// public void onElementDestroyed(IElement e) {
+//// List<SceneGraph> nodeHandlers = e.getElementClass().getItemsByClass(SceneGraph.class);
+//// for(SceneGraph n : nodeHandlers) {
+//// System.out.println("element gone:"+e);
+//// n.cleanup(e);
+//// }
+// }
+// }
+//
+// static double getOrientationDelta(IElement e, AffineTransform tr) {
+// Double angle = e.getHint(KEY_DIRECTION);
+// if (angle == null || Double.isNaN(angle))
+// return Double.NaN;
+// double angrad = Math.toRadians(angle);
+//
+// Vector2d forcedAxis = new Vector2d(Math.cos(angrad), Math.sin(angrad));
+// Vector2d x = new Vector2d(tr.getScaleX(), tr.getShearX());
+// forcedAxis.normalize();
+// x.normalize();
+// double cosa = forcedAxis.dot(x);
+// double delta = Math.acos(cosa);
+// return delta;
+// }
+//
+// static class MonitorImageFactory implements IFactory<Image> {
+// private double staticScaleX = 1, staticScaleY = 1;
+//
+// public MonitorImageFactory(double staticScaleX, double staticScaleY) {
+// this.staticScaleX = staticScaleX;
+// this.staticScaleY = staticScaleY;
+// }
+//
+// @Override
+// public Image get() throws ProvisionException {
+// return new AbstractImage() {
+// Shape path = align(DEFAULT_HORIZONTAL_MARGIN, DEFAULT_VERTICAL_MARGIN, DEFAULT_HORIZONTAL_ALIGN, DEFAULT_VERTICAL_ALIGN,
+// new Rectangle2D.Double(0, 0, 50*staticScaleX, 22*staticScaleY));
+//
+// @Override
+// public Rectangle2D getBounds() {
+// return path.getBounds2D();
+// }
+//
+// @Override
+// public EnumSet<Feature> getFeatures() {
+// return EnumSet.of(Feature.Vector);
+// }
+//
+// @Override
+// public Shape getOutline() {
+// return path;
+// }
+//
+// @Override
+// public Node init(G2DParentNode parent) {
+// MonitorNode node = parent.getOrCreateNode(""+hashCode(), MonitorNode.class);
+// node.setText("");
+// node.setSize(50, 22);
+// node.setBorderWidth(1);
+// node.setText("Drop Me");
+// node.setTransform(AffineTransform.getScaleInstance(staticScaleX, staticScaleY));
+// return node;
+// }
+// };
+// }
+// }
+//
+// static final IProvider<Image> MONITOR_IMAGE =
+// ProviderUtils.reference(
+// ProviderUtils.cache(
+// ProviderUtils.rasterize(
+// new MonitorImageFactory(0.5, 0.5)
+// )));
+//
+// static final StaticSymbol MONITOR_SYMBOL = new StaticSymbolImpl( MONITOR_IMAGE.get() );
+//
+// static final FillColor FILL_COLOR = new FillColorImpl(DEFAULT_FILL_COLOR);
+//
+// public static final ElementClass MONITOR_CLASS =
+// ElementClass.compile(
+// MonitorHandlerImpl.INSTANCE,
+// Transformer.INSTANCE,
+// BorderColorImpl.BLACK,
+// FILL_COLOR,
+// MonitorSGNode.INSTANCE,
+// TextImpl.INSTANCE,
+// TextEditorImpl.INSTANCE,
+// TextFontImpl.DEFAULT,
+// TextColorImpl.BLACK,
+// SimpleElementLayers.INSTANCE,
+// MONITOR_SYMBOL
+// );
+//
+// // staticScale{X,Y} define the scale of the static monitor image
+// public static ElementClass create(IElement parentElement, Map<String, String> substitutions, Object component, String suffix, double staticScaleX, double staticScaleY, ElementHandler... extraHandlers) {
+// // Bit of a hack to be able to define the scale
+// IProvider<Image> staticMonitorSymbolProvider = ProviderUtils.reference(
+// ProviderUtils.cache(
+// ProviderUtils
+// .rasterize(
+// new MonitorImageFactory(staticScaleX, staticScaleY))));
+// StaticSymbol staticMonitorSymbol = new StaticSymbolImpl( staticMonitorSymbolProvider.get() );
+// return ElementClass.compile(
+// new Initializer(parentElement, substitutions, component, suffix, parentElement != null ? false : true),
+// MonitorHandlerImpl.INSTANCE,
+// Transformer.INSTANCE,
+// BorderColorImpl.BLACK,
+// FILL_COLOR,
+// MonitorSGNode.INSTANCE,
+// TextImpl.INSTANCE,
+// TextEditorImpl.INSTANCE,
+// TextFontImpl.DEFAULT,
+// TextColorImpl.BLACK,
+// SimpleElementLayers.INSTANCE,
+// staticMonitorSymbol
+// ).newClassWith(extraHandlers);
+// }
+//
+//}