X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FRouteGraphConnectionClassFactory.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fadapter%2FRouteGraphConnectionClassFactory.java;h=1b39ef87ba5b2c55486bc15c3f020f7fbbd7b2ca;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphConnectionClassFactory.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphConnectionClassFactory.java new file mode 100644 index 000000000..1b39ef87b --- /dev/null +++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/RouteGraphConnectionClassFactory.java @@ -0,0 +1,847 @@ +/******************************************************************************* + * 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.diagram.adapter; + +import gnu.trove.map.hash.THashMap; +import gnu.trove.set.hash.THashSet; + +import java.awt.BasicStroke; +import java.awt.Color; +import java.awt.Shape; +import java.awt.Stroke; +import java.awt.geom.AffineTransform; +import java.awt.geom.Rectangle2D; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.Map; +import java.util.Set; + +import org.simantics.databoard.Bindings; +import org.simantics.db.AsyncReadGraph; +import org.simantics.db.ReadGraph; +import org.simantics.db.Resource; +import org.simantics.db.Session; +import org.simantics.db.Statement; +import org.simantics.db.common.procedure.adapter.TransientCacheListener; +import org.simantics.db.common.request.ResourceRead2; +import org.simantics.db.common.request.UnaryRead; +import org.simantics.db.common.utils.NameUtils; +import org.simantics.db.exception.DatabaseException; +import org.simantics.db.procedure.AsyncProcedure; +import org.simantics.diagram.connection.ConnectionVisuals; +import org.simantics.diagram.connection.RouteGraph; +import org.simantics.diagram.connection.RouteGraphConnectionClass; +import org.simantics.diagram.connection.RouteLine; +import org.simantics.diagram.connection.RouteNode; +import org.simantics.diagram.connection.RouteTerminal; +import org.simantics.diagram.connection.rendering.BasicConnectionStyle; +import org.simantics.diagram.connection.rendering.ConnectionStyle; +import org.simantics.diagram.connection.rendering.StyledRouteGraphRenderer; +import org.simantics.diagram.connection.rendering.arrows.ArrowLineEndStyle; +import org.simantics.diagram.connection.rendering.arrows.ILineEndStyle; +import org.simantics.diagram.connection.rendering.arrows.PlainLineEndStyle; +import org.simantics.diagram.content.EdgeResource; +import org.simantics.diagram.content.ResourceTerminal; +import org.simantics.diagram.content.TerminalMap; +import org.simantics.diagram.query.DiagramRequests; +import org.simantics.diagram.stubs.DiagramResource; +import org.simantics.diagram.stubs.G2DResource; +import org.simantics.diagram.synchronization.graph.DiagramGraphUtil; +import org.simantics.diagram.synchronization.graph.RouteGraphConnection; +import org.simantics.diagram.ui.DiagramModelHints; +import org.simantics.g2d.canvas.ICanvasContext; +import org.simantics.g2d.connection.ConnectionEntity; +import org.simantics.g2d.diagram.IDiagram; +import org.simantics.g2d.diagram.handler.DataElementMap; +import org.simantics.g2d.diagram.handler.Topology.Connection; +import org.simantics.g2d.diagram.handler.Topology.Terminal; +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.handler.EdgeVisuals.EdgeEnd; +import org.simantics.g2d.element.handler.TerminalTopology; +import org.simantics.g2d.element.handler.impl.StaticObjectAdapter; +import org.simantics.g2d.elementclass.FlagClass.Type; +import org.simantics.g2d.utils.TopologicalSelectionExpander; +import org.simantics.layer0.Layer0; +import org.simantics.modeling.ModelingResources; +import org.simantics.scenegraph.g2d.nodes.connection.IRouteGraphListener; +import org.simantics.scenegraph.g2d.nodes.connection.RouteGraphChangeEvent; +import org.simantics.scenegraph.utils.GeometryUtils; +import org.simantics.structural.stubs.StructuralResource2; +import org.simantics.structural2.modelingRules.CPTerminal; +import org.simantics.structural2.modelingRules.IAttachmentRelationMap; +import org.simantics.structural2.modelingRules.IModelingRules; + +/** + * An element class for single connection entity elements. A connection entity + * consists of connection edge segments and branch points as its children. + * + * @author Tuukka Lehtonen + */ +public class RouteGraphConnectionClassFactory extends SyncElementFactory { + + private static final boolean DEBUG = false; + + public static final ElementClass CLASS = RouteGraphConnectionClass.CLASS; + + public static final ILineEndStyle HEAD = new ArrowLineEndStyle("fill 2 1 0"); + public static final ILineEndStyle TAIL = PlainLineEndStyle.INSTANCE; + + protected Layer0 L0; + protected DiagramResource DIA; + protected StructuralResource2 STR; + protected ModelingResources MOD; + + public RouteGraphConnectionClassFactory(ReadGraph graph) { + this.L0 = Layer0.getInstance(graph); + this.DIA = DiagramResource.getInstance(graph); + this.STR = StructuralResource2.getInstance(graph); + this.MOD = ModelingResources.getInstance(graph); + } + + @Override + public void create(AsyncReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource elementType, + final AsyncProcedure procedure) { + procedure.execute(graph, CLASS.newClassWith(false, new StaticObjectAdapter(elementType))); + } + + @Override + protected Resource getElementClassBaseType(AsyncReadGraph graph) { + return DIA.Connection; + } + + @Override + public void load(ReadGraph graph, ICanvasContext canvas, IDiagram diagram, final Resource connection, + IElement element) throws DatabaseException { + + IModelingRules modelingRules = diagram.getHint(DiagramModelHints.KEY_MODELING_RULES); + Resource diagramRuntime = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RUNTIME_RESOURCE); + + RouteGraph rg = new RouteGraph(); + + // Default capacity should be enough for common cases. + Set links = new THashSet(); + Map nodeByData = new THashMap(); + + // Load all route graph interior RouteNodes: route lines and points + for (Resource interiorNode : graph.getObjects(connection, DIA.HasInteriorRouteNode)) { + if (graph.isInstanceOf(interiorNode, DIA.RouteLine)) { + Boolean isHorizontal = graph.getRelatedValue(interiorNode, DIA.IsHorizontal, Bindings.BOOLEAN); + Double position = graph.getRelatedValue(interiorNode, DIA.HasPosition, Bindings.DOUBLE); + RouteLine line = rg.addLine(isHorizontal, position); + line.setData( RouteGraphConnection.serialize(graph, interiorNode) ); + + nodeByData.put( interiorNode, line ); + + for (Resource connectedTo : graph.getObjects(interiorNode, DIA.AreConnected)) { + links.add( new EdgeResource(interiorNode, connectedTo) ); + } + } else if (graph.isInstanceOf(interiorNode, DIA.RoutePoint)) { + // Not supported yet. Ignore. + } + } + + Rectangle2D bounds = new Rectangle2D.Double(); + Map connectorToModeledAttachment = null; + + // Primarily the loader will believe what modeling rules say about + // connector attachment relations. + // + // If modeling rules decide nothing, then we simply believe what the + // the attachment relations in the graph say. + // + // Special case 1: connection with two (2) terminals + // If the attachment of one of two terminals is decided by modeling + // rules, the other attachment shall be the opposite of the decided + // attachment (see forcedAttachmentRelation below). + // + // Special case 2: connected to a flag + // If the attached element is a flag and modeling rules say nothing + // about it, believe the direction stated by the flag type. + + Collection toConnectorStatements = graph.getStatements(connection, DIA.HasConnector); + int terminalCount = 0; + + // See if modeling rules judge any of the connection terminal attachments. + if (modelingRules != null) { + for (Statement toConnector : toConnectorStatements) { + Resource connector = toConnector.getObject(); + + Statement terminalStm = findTerminalStatement(graph, connection, connector); + if (terminalStm == null) + // Ignore broken connector: attached to the connection but not to any terminal. + continue; + + Resource terminalElement = terminalStm.getObject(); + Resource connectionRelation = graph.getPossibleInverse(terminalStm.getPredicate()); + if (connectionRelation == null) + continue; + + ++terminalCount; + + IAttachmentRelationMap map = modelingRules.getAttachmentRelations(graph, connection); + Resource attachment = map.get(graph, new CPTerminal(terminalElement, connectionRelation)); + if (attachment != null) { + // Primary: believe modeling rules + if (connectorToModeledAttachment == null) + connectorToModeledAttachment = new THashMap(toConnectorStatements.size()); + connectorToModeledAttachment.put(connector, attachment); + if (DEBUG) + System.out.println("modeling rules decided attachment: " + NameUtils.getSafeName(graph, attachment, true) + " for (" + NameUtils.toString(graph, toConnector, true) + ") & (" + NameUtils.toString(graph, terminalStm, true) + ")"); + } else if (graph.isInstanceOf(terminalElement, DIA.Flag)) { + // Secondary: believe flag type + attachment = resolveFlagAttachment(graph, connection, terminalElement, modelingRules); + if (attachment != null) { + if (connectorToModeledAttachment == null) + connectorToModeledAttachment = new THashMap(toConnectorStatements.size()); + connectorToModeledAttachment.put(connector, attachment); + if (DEBUG) + System.out.println("flag type decided attachment: " + NameUtils.getSafeName(graph, attachment, true) + " for (" + NameUtils.toString(graph, toConnector, true) + ") & (" + NameUtils.toString(graph, terminalStm, true) + ")"); + } + } + } + } + + if (connectorToModeledAttachment == null) + connectorToModeledAttachment = Collections.emptyMap(); + + Resource forcedAttachmentRelation = null; + if (terminalCount == 2 && connectorToModeledAttachment.size() == 1) { + forcedAttachmentRelation = getInverseAttachment(graph, connectorToModeledAttachment.values().iterator().next()); + if (DEBUG) + System.out.println("set forced attachment: " + NameUtils.getSafeLabel(graph, forcedAttachmentRelation)); + } + + Resource connectionType = graph.getPossibleObject(connection, STR.HasConnectionType); + + // Needed to support ConnectionEntity#getTerminalConnections + Set backendConnections = new THashSet(toConnectorStatements.size(), 0.75f); + + // Load all node terminal connections as RouteTerminals + for (Statement toConnector : toConnectorStatements) { + Resource connector = toConnector.getObject(); + Resource attachmentRelation = toConnector.getPredicate(); + if (DEBUG) + System.out.println("original attachment relation: " + NameUtils.getSafeLabel(graph, attachmentRelation)); + + Statement terminalStm = findTerminalStatement(graph, connection, connector); + if (terminalStm == null) + // Ignore broken connector: attached to the connection but not to any terminal. + continue; + + Resource terminalElement = terminalStm.getObject(); + Resource terminalElementType = graph.getPossibleType(terminalElement, DIA.Element); + if (terminalElementType == null) + // Ignore non-element terminal elements + continue; + + Resource connectionRelation = graph.getPossibleInverse(terminalStm.getPredicate()); + if (connectionRelation == null) + continue; + + // Discover node and terminal this connector is connected to. + TerminalMap terminals = graph.syncRequest(DiagramRequests.elementTypeTerminals(terminalElementType), + TransientCacheListener.instance()); + Resource terminal = terminals.getTerminal(connectionRelation); + if (terminal == null) { + System.err.println(getClass().getSimpleName() + + ": Could not find terminal for connection point " + + NameUtils.getSafeName(graph, connectionRelation, true) + + " in element " + + NameUtils.getSafeName(graph, terminalElement, true)); + continue; + } + + double[] position = graph.getRelatedValue(connector, DIA.HasRelativeLocation, Bindings.DOUBLE_ARRAY); + if (position.length != 2) + position = new double[] { 0, 0 }; + + if (DEBUG) { + System.out.println("terminalStm: " + NameUtils.toString(graph, terminalStm)); + System.out.println("terminal: " + graph.getURI(terminalStm.getPredicate())); + } + AffineTransform terminalElementTr = DiagramGraphUtil.getDynamicWorldTransform(graph, diagramRuntime, terminalElement); + if (DEBUG) + System.out.println("terminalElementTr: " + terminalElementTr); + + double x = terminalElementTr.getTranslateX(); + double y = terminalElementTr.getTranslateY(); + double minx = x-1, miny = y-1, maxx = x+1, maxy = y+1; + int direction = 0x0; + + // Use modelingRules to ascertain the proper attachmentRelation + // for this terminal connection, if available. + Resource att = connectorToModeledAttachment.get(connector); + if (att != null) { + attachmentRelation = att; + if (DEBUG) + System.out.println("modeling rules attachment: " + NameUtils.getSafeLabel(graph, attachmentRelation)); + } else if (forcedAttachmentRelation != null) { + attachmentRelation = forcedAttachmentRelation; + if (DEBUG) + System.out.println("forced rules attachment: " + NameUtils.getSafeLabel(graph, attachmentRelation)); + } + if (DEBUG) + System.out.println("decided attachment: " + NameUtils.getSafeLabel(graph, attachmentRelation)); + + // Get element bounds to decide allowed terminal direction(s) + IElement te = graph.syncRequest(DiagramRequests.getElement(canvas, diagram, terminalElement, null)); + ElementUtils.getElementBounds(te, bounds); + { + Shape shp = org.simantics.g2d.utils.GeometryUtils.transformShape(bounds, terminalElementTr); + bounds.setFrame(shp.getBounds2D()); + } + + // Expand bounds by 2mm to make the connections enter the terminals + // at a straight angle and from a distance instead of coming in + // "horizontally". + GeometryUtils.expandRectangle(bounds, 2); + minx = bounds.getMinX(); + miny = bounds.getMinY(); + maxx = bounds.getMaxX(); + maxy = bounds.getMaxY(); + + AffineTransform terminalPos = DiagramGraphUtil.getDynamicAffineTransform(graph, terminalElement, terminal); + //AffineTransform terminalPos2 = DiagramGraphUtil.getAffineTransform(graph, terminal); + if (terminalPos != null) { + if (DEBUG) { + System.out.println("terminalPos: " + terminalPos); + //System.out.println("terminalPos2: " + terminalPos2); + } + terminalElementTr.concatenate(terminalPos); + if (DEBUG) + System.out.println("terminalElementTr: " + terminalElementTr); + x = terminalElementTr.getTranslateX(); + y = terminalElementTr.getTranslateY(); + } + + Integer allowedDirections = graph.getPossibleRelatedValue(terminal, DIA.Terminal_AllowedDirections, Bindings.INTEGER); + if (allowedDirections != null) { + direction |= allowedDirections; + direction = RouteGraphUtils.rotateDirection(direction, terminalElementTr); + } else { + direction |= RouteGraphConnectionClass.shortestDirectionOutOfBounds(x, y, bounds); + } + //System.out.println("DIR(" + x + ", " + y + ", " + bounds + "): " + Integer.toHexString(direction)); + + backendConnections.add( + new BackendConnection( + toEdgeEnd(graph, attachmentRelation, EdgeEnd.Begin), + terminalElement, + terminal) + ); + + if (direction == 0) + // Accept any horizontal/vertical direction if nothing is defined + direction = 0xf; + + if (graph.getRelatedValue(connector, DIA.Connector_straight, Bindings.BOOLEAN)) + direction |= RouteTerminal.DIR_DIRECT; + // FIXME: routegraph crashes if this is done for all terminals regardless of the amount of terminals. + + if (DEBUG) + System.out.println("load line style: " + NameUtils.getSafeLabel(graph, attachmentRelation)); + ILineEndStyle endStyle = loadLineEndStyle(graph, attachmentRelation, connectionType, TAIL); + + RouteTerminal routeTerminal = rg.addTerminal(x, y, minx, miny, maxx, maxy, direction, endStyle); + routeTerminal.setData( RouteGraphConnection.serialize(graph, connector) ); + + nodeByData.put( connector, routeTerminal ); + + for (Resource connectedTo : graph.getObjects(connector, DIA.AreConnected)) { + links.add( new EdgeResource(connectedTo, connector) ); + } + } + + // Finish route graph loading by Linking route nodes together + for (EdgeResource link : links) { + RouteNode n1 = nodeByData.get(link.first()); + RouteNode n2 = nodeByData.get(link.second()); + if (n1 == null || n2 == null) { + System.err.println("Stray connection link found: " + link.toString(graph)); + continue; + } + rg.link(n1, n2); + } + + // Load connection line style. + ConnectionStyle style = readConnectionStyle(graph, modelingRules, connection); + StyledRouteGraphRenderer renderer = getRenderer(graph, style); + + // Finish element load + element.setHint(RouteGraphConnectionClass.KEY_ROUTEGRAPH, rg); + element.setHint(RouteGraphConnectionClass.KEY_RENDERER, renderer); + element.setHint(RouteGraphConnectionClass.KEY_PICK_TOLERANCE, 0.5); + + // Initialize ConnectionEntity in element + element.setHint(ElementHints.KEY_CONNECTION_ENTITY, new CE(diagram, connection, element, backendConnections)); + + // Setup graph writeback support for route graph modifications + final Session session = graph.getSession(); + element.setHint(RouteGraphConnectionClass.KEY_RG_LISTENER, new IRouteGraphListener() { + @Override + public void routeGraphChanged(RouteGraphChangeEvent event) { + scheduleSynchronize(session, connection, event); + } + }); + } + + protected EdgeEnd toEdgeEnd(ReadGraph graph, Resource attachmentRelation, EdgeEnd defaultValue) + throws DatabaseException { + if (graph.isSubrelationOf(attachmentRelation, DIA.HasTailConnector)) + return EdgeEnd.Begin; + if (graph.isSubrelationOf(attachmentRelation, DIA.HasHeadConnector)) + return EdgeEnd.End; + return defaultValue; + } + + /** + * @param graph + * @param canvas + * @param style + * @return + * @throws DatabaseException + */ + protected StyledRouteGraphRenderer getRenderer(ReadGraph graph, ConnectionStyle style) + throws DatabaseException { + return graph.syncRequest(new Renderer(style), + TransientCacheListener.instance()); + } + + /** + * A request for caching StyledRouteGraphRenderer results. + */ + public static class Renderer extends UnaryRead { + public Renderer(ConnectionStyle style) { + super(style); + } + @Override + public StyledRouteGraphRenderer perform(ReadGraph graph) throws DatabaseException { + return new StyledRouteGraphRenderer(parameter); + } + } + + /** + * @param graph + * @param canvas + * @param modelingRules + * @param connection + * @return + * @throws DatabaseException + */ + protected ConnectionStyle readConnectionStyle(ReadGraph graph, IModelingRules modelingRules, Resource connection) throws DatabaseException { + Resource connectionType = null; + if (modelingRules != null) + connectionType = modelingRules.getConnectionType(graph, connection); + if (connectionType == null) + connectionType = graph.getPossibleObject(connection, STR.HasConnectionType); + return readConnectionStyleFromConnectionType(graph, connectionType); + } + + protected ConnectionStyle readConnectionStyleFromConnectionType(ReadGraph graph, Resource connectionType) throws DatabaseException { + return graph.syncRequest(new ReadConnectionStyleFromConnectionType(connectionType), + TransientCacheListener.instance()); + } + + /** + * A request for caching ConnectionStyle results. + */ + public static class ReadConnectionStyleFromConnectionType extends UnaryRead { + public ReadConnectionStyleFromConnectionType(Resource connectionType) { + super(connectionType); + } + @Override + public ConnectionStyle perform(ReadGraph graph) throws DatabaseException { + return readConnectionStyleFromConnectionType0(graph, parameter); + } + } + + protected static ConnectionStyle readConnectionStyleFromConnectionType0(ReadGraph graph, Resource connectionType) throws DatabaseException { + ConnectionVisuals cv = null; + if (connectionType != null) + cv = graph.syncRequest(DiagramRequests.getConnectionVisuals(connectionType), + TransientCacheListener.instance()); + + // Fixed style settings + Color branchPointColor = Color.BLACK; + double branchPointRadius = 0.5; + double degenerateLineLength = 0.8; + + Color lineColor = cv != null ? cv.toColor() : null; + if (lineColor == null) + lineColor = Color.DARK_GRAY; + Stroke lineStroke = cv != null ? cv.stroke : null; + if (lineStroke == null) + lineStroke = new BasicStroke(0.1f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 10, null, 0); + Stroke routeLineStroke = GeometryUtils.scaleStrokeWidth(lineStroke, 2); + + return new BasicConnectionStyle( + lineColor, + branchPointColor, + branchPointRadius, + lineStroke, + routeLineStroke, + degenerateLineLength); + } + + /** + * @param graph + * @param connection + * @param connector + * @return connection relation statement from diagram connection connector + * to a node + * @throws DatabaseException + */ + public Statement findTerminalStatement(ReadGraph graph, Resource connection, Resource connector) + throws DatabaseException { + for (Statement stm : graph.getStatements(connector, STR.Connects)) { + if (connection.equals(stm.getObject())) + continue; + return stm; + } + return null; + } + + public static ILineEndStyle loadLineEndStyle(ReadGraph graph, Resource attachmentRelation, ILineEndStyle defaultValue) + throws DatabaseException { + ILineEndStyle style = graph.syncRequest(new LineEndStyle(attachmentRelation), + TransientCacheListener.instance()); + return style != null ? style : defaultValue; + } + + public static ILineEndStyle loadLineEndStyle(ReadGraph graph, Resource attachmentRelation, Resource connectionType, ILineEndStyle defaultValue) + throws DatabaseException { + if(connectionType != null) { + ILineEndStyle style = graph.syncRequest(new LineEndStyleWithType(attachmentRelation, connectionType), + TransientCacheListener.instance()); + return style != null ? style : defaultValue; + } else { + ILineEndStyle style = graph.syncRequest(new LineEndStyle(attachmentRelation), + TransientCacheListener.instance()); + return style != null ? style : defaultValue; + } + } + + /** + * A request for caching ILineEndStyle results. + */ + public static class LineEndStyle extends UnaryRead { + public LineEndStyle(Resource attachmentRelation) { + super(attachmentRelation); + } + @Override + public ILineEndStyle perform(ReadGraph graph) throws DatabaseException { + return loadLineEndStyle0(graph, parameter); + } + } + + public static class LineEndStyleWithType extends ResourceRead2 { + public LineEndStyleWithType(Resource attachmentRelation, Resource connectionType) { + super(attachmentRelation, connectionType); + } + @Override + public ILineEndStyle perform(ReadGraph graph) throws DatabaseException { + return loadLineEndStyle0(graph, resource, resource2); + } + } + + public static ILineEndStyle loadLineEndStyle0(ReadGraph graph, Resource attachmentRelation) + throws DatabaseException { + ILineEndStyle style = graph.getPossibleAdapter(attachmentRelation, ILineEndStyle.class); + if (style != null) + return style; + DiagramResource DIA = DiagramResource.getInstance(graph); + if (graph.isSubrelationOf(attachmentRelation, DIA.HasHeadConnector)) + return HEAD; + if (graph.isSubrelationOf(attachmentRelation, DIA.HasTailConnector)) + return TAIL; + return null; + } + + public static ILineEndStyle loadLineEndStyle0(ReadGraph graph, Resource attachmentRelation, Resource connectionType) + throws DatabaseException { + DiagramResource DIA = DiagramResource.getInstance(graph); + if (graph.isSubrelationOf(attachmentRelation, DIA.HasHeadConnector)) { + if(connectionType != null) { + G2DResource G2D = G2DResource.getInstance(graph); + Resource end = graph.getPossibleObject(connectionType, G2D.HasEndArrow); + if(end != null) { + + Double size = graph.getPossibleRelatedValue(end, G2D.HasSize, Bindings.DOUBLE); + if(size == null) size = 0.0; + Double widthRatio = graph.getPossibleRelatedValue(end, G2D.HasWidthRatio, Bindings.DOUBLE); + if(widthRatio == null) widthRatio = 1.0; + Double space = graph.getPossibleRelatedValue(end, G2D.HasSpace, Bindings.DOUBLE); + if(space == null) space = 0.0; + + Resource c = graph.getPossibleObject(end, G2D.HasColor); + Color color = null; + if (c != null) { + float[] col = graph.getPossibleValue(c, Bindings.FLOAT_ARRAY); + if (col != null && col.length >= 3) { + color = new Color(col[0], col[1], col[2]); + } + } + + return new ArrowLineEndStyle(size, widthRatio*size, space, color); + + } + } + } + return loadLineEndStyle0(graph, attachmentRelation); + } + + /** + * @param graph + * @param attachmentRelation + * @return + * @throws DatabaseException + */ + public Resource getInverseAttachment(ReadGraph graph, Resource attachmentRelation) + throws DatabaseException { + Resource inverse = graph.getPossibleObject(attachmentRelation, DIA.HasInverseAttachment); + if (inverse != null) + return inverse; + if (graph.isSubrelationOf(attachmentRelation, DIA.HasHeadConnector)) + return DIA.HasPlainConnector; + if (graph.isSubrelationOf(attachmentRelation, DIA.HasTailConnector)) + return DIA.HasArrowConnector; + return null; + } + +// private int directionSetToToDirectionMask(DirectionSet directions) { +// if (directions == DirectionSet.ANY) +// return 0xf; +// int mask = 0; +// for (Double d : directions) { +// mask |= compassAngleToToDirectionMask(d); +// } +// return mask; +// } +// +// private int compassAngleToToDirectionMask(double compassAngle) { +// Double d = DirectionSet.NESW.getClosestDirection(compassAngle); +// int id = (int) Math.round(d); +// // bits: +// // 0 right (1,0) +// // 1 down (0,1) +// // 2 left (-1,0) +// // 3 up (0,-1) +// switch (id) { +// case 0: return (1 << 3); +// case 90: return (1 << 2); +// case 180: return (1 << 1); +// case 270: return (1 << 0); +// } +// return 0xf; +// } + + public Resource resolveFlagAttachment(ReadGraph graph, Resource connection, Resource flag, IModelingRules modelingRules) throws DatabaseException { + Type type = resolveFlagType(graph, connection, flag, modelingRules); + if (type != null) { + switch (type) { + case In: return DIA.HasPlainConnector; + case Out: return DIA.HasArrowConnector; + } + } + return null; + } + + protected Type resolveFlagType(ReadGraph graph, Resource connection, Resource flag, IModelingRules modelingRules) throws DatabaseException { + return readFlagType(graph, flag); +// StructuralResource2 sr = StructuralResource2.getInstance(graph); +// Resource connectionType = graph.getPossibleObject(connection, sr.HasConnectionType); +// if (connectionType == null) +// return readFlagType(graph, flagElement, flag); +// IFlagTypeReader ftr = graph.getPossibleAdapter(connectionType, IFlagTypeReader.class); +// if (ftr == null) +// return readFlagType(graph, flagElement, flag); +// +// IFlagType ft = ftr.read(graph, flag, modelingRules); +// FlagInfo info = ft.getInfo(graph); +// return info.getType(); + } + + protected Type readFlagType(ReadGraph graph, Resource flag) throws DatabaseException { + Resource flagType = graph.getPossibleObject(flag, DIA.HasFlagType); + Type type = DiagramGraphUtil.toFlagType(DIA, flagType); + return type; + } + + public static void scheduleSynchronize(Session session, Resource connection, RouteGraphChangeEvent event) { + session.asyncRequest(RouteGraphConnection.synchronizer(connection, event)); + } + + /** + * Must have this in order for {@link TopologicalSelectionExpander} to work. + * Otherwise this is pretty useless and should be deprecated altogether. + * + * @see ElementHints#KEY_CONNECTION_ENTITY + */ + public static class CE implements ConnectionEntity { + + /** + * Needed to gain access to DataElementMap. + */ + final IDiagram diagram; + final DataElementMap dataMap; + + /** + * The connection instance resource in the graph backend. + */ + final Resource connection; + + /** + * The current element mapped to connection. + */ + IElement connectionElement; + + /** + * @see #getTerminalConnections(Collection) + */ + final Set backendConnections; + + /** + * Cache. + */ + Set terminalConnections; + + public CE(IDiagram diagram, Resource connection, IElement connectionElement, Set backendConnections) { + if (connectionElement == null) + throw new NullPointerException("null connection element"); + this.diagram = diagram; + this.dataMap = diagram.getDiagramClass().getSingleItem(DataElementMap.class); + this.connection = connection; + this.connectionElement = connectionElement; + this.backendConnections = backendConnections; + IElement ce = getConnection0(); + if (ce != null) + this.connectionElement = ce; + } + + public IElement getConnection0() { + DataElementMap dem = diagram.getDiagramClass().getSingleItem(DataElementMap.class); + IElement connectionElement = dem.getElement(diagram, connection); + return connectionElement; + } + + @Override + public IElement getConnection() { + IElement c = getConnection0(); + if (c == null) + c = this.connectionElement; + return c; + } + + @Override + public Collection getBranchPoints(Collection result) { + return result != null ? result : Collections. emptyList(); + } + + @Override + public Collection getSegments(Collection result) { + return result != null ? result : Collections. emptyList(); + } + + @Override + public Collection getTerminalConnections(Collection result) { + if (terminalConnections == null) + terminalConnections = calculateTerminalConnections(); + if (result == null) + result = new ArrayList(terminalConnections); + else + result.addAll(terminalConnections); + return terminalConnections; + } + + private Set calculateTerminalConnections() { + Set result = new THashSet(backendConnections.size()); + DataElementMap dem = diagram.getDiagramClass().getSingleItem(DataElementMap.class); + IElement connectionElement = dem.getElement(diagram, connection); + if (connectionElement == null) + throw new NullPointerException("connection is not mapped"); + ArrayList ts = new ArrayList(); + for (BackendConnection bc : backendConnections) { + IElement e = dem.getElement(diagram, bc.node); + if (e == null) + continue; + TerminalTopology tt = e.getElementClass().getSingleItem(TerminalTopology.class); + ts.clear(); + tt.getTerminals(e, ts); + for (Terminal t : ts) { + if (t instanceof ResourceTerminal) { + ResourceTerminal rt = (ResourceTerminal) t; + if (bc.terminal.equals(rt.getResource())) { + result.add(new Connection(connectionElement, bc.end, e, t)); + break; + } + } + } + } + return result; + } + + @Override + public void setListener(ConnectionListener listener) { + throw new UnsupportedOperationException(); + } + + @Override + public String toString() { + return getClass().getSimpleName() + "[resource=" + connection + ", connectionElement=" + getConnection() + + "]"; + } + + } + + public static class BackendConnection { + public final Resource node; + public final Resource terminal; + public final EdgeEnd end; + public BackendConnection(EdgeEnd end, Resource node, Resource terminal) { + assert end != null; + assert node != null; + assert terminal != null; + this.end = end; + this.node = node; + this.terminal = terminal; + } + @Override + public boolean equals(Object obj) { + if (this == obj) + return true; + if (!(obj instanceof Connection)) + return false; + Connection other = (Connection) obj; + return other.terminal == terminal + && other.node == node + && other.end == end; + } + @Override + public int hashCode() { + final int prime = 31; + int result = 1; + result = prime * result + end.hashCode(); + result = prime * result + ((node == null) ? 0 : node.hashCode()); + result = prime * result + ((terminal == null) ? 0 : terminal.hashCode()); + return result; + } + @Override + public String toString() { + return "BackendConnection[node=" + node + ", terminal=" + terminal + ", end=" + end + "]"; + } + } + +} \ No newline at end of file