X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fparticipant%2FConnectTool2.java;h=ce2630df66d40a9b0a002815fe2fe6b5f219662c;hb=96a52e35c714a09715e1ac17c53910cd31ced9c7;hp=2165794e89c489c34e34daddf5613fa22d13e9ae;hpb=b3da313f6d3b9143f8cbe90d4252e4347adc119a;p=simantics%2Fplatform.git
diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/participant/ConnectTool2.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/participant/ConnectTool2.java
index 2165794e8..ce2630df6 100644
--- a/bundles/org.simantics.diagram/src/org/simantics/diagram/participant/ConnectTool2.java
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/participant/ConnectTool2.java
@@ -1,1165 +1,1190 @@
-/*******************************************************************************
- * 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.participant;
-
-import java.awt.AlphaComposite;
-import java.awt.BasicStroke;
-import java.awt.Color;
-import java.awt.Composite;
-import java.awt.geom.AffineTransform;
-import java.awt.geom.Path2D;
-import java.awt.geom.Point2D;
-import java.awt.geom.Rectangle2D;
-import java.util.ArrayDeque;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Deque;
-import java.util.Iterator;
-import java.util.List;
-
-import org.simantics.Simantics;
-import org.simantics.db.ReadGraph;
-import org.simantics.db.Resource;
-import org.simantics.db.WriteGraph;
-import org.simantics.db.common.request.UniqueRead;
-import org.simantics.db.common.request.WriteRequest;
-import org.simantics.db.common.utils.NameUtils;
-import org.simantics.db.exception.DatabaseException;
-import org.simantics.diagram.connection.RouteGraph;
-import org.simantics.diagram.connection.RouteGraphConnectionClass;
-import org.simantics.diagram.connection.RouteLine;
-import org.simantics.diagram.connection.RouteTerminal;
-import org.simantics.diagram.connection.delta.RouteGraphDelta;
-import org.simantics.diagram.connection.rendering.arrows.PlainLineEndStyle;
-import org.simantics.diagram.content.ResourceTerminal;
-import org.simantics.diagram.stubs.DiagramResource;
-import org.simantics.diagram.synchronization.ISynchronizationContext;
-import org.simantics.diagram.synchronization.SynchronizationHints;
-import org.simantics.diagram.synchronization.graph.RouteGraphConnection;
-import org.simantics.g2d.canvas.ICanvasContext;
-import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
-import org.simantics.g2d.canvas.impl.DependencyReflection.Reference;
-import org.simantics.g2d.canvas.impl.SGNodeReflection.SGCleanup;
-import org.simantics.g2d.canvas.impl.SGNodeReflection.SGInit;
-import org.simantics.g2d.connection.IConnectionAdvisor;
-import org.simantics.g2d.diagram.DiagramHints;
-import org.simantics.g2d.diagram.DiagramUtils;
-import org.simantics.g2d.diagram.IDiagram;
-import org.simantics.g2d.diagram.handler.PickContext;
-import org.simantics.g2d.diagram.handler.Topology.Terminal;
-import org.simantics.g2d.diagram.participant.ElementPainter;
-import org.simantics.g2d.diagram.participant.TerminalPainter;
-import org.simantics.g2d.diagram.participant.TerminalPainter.TerminalHoverStrategy;
-import org.simantics.g2d.diagram.participant.pointertool.AbstractMode;
-import org.simantics.g2d.diagram.participant.pointertool.PointerInteractor;
-import org.simantics.g2d.diagram.participant.pointertool.TerminalUtil;
-import org.simantics.g2d.diagram.participant.pointertool.TerminalUtil.TerminalInfo;
-import org.simantics.g2d.element.ElementClass;
-import org.simantics.g2d.element.ElementClasses;
-import org.simantics.g2d.element.ElementUtils;
-import org.simantics.g2d.element.IElement;
-import org.simantics.g2d.element.IElementClassProvider;
-import org.simantics.g2d.element.handler.EdgeVisuals.EdgeEnd;
-import org.simantics.g2d.element.handler.SceneGraph;
-import org.simantics.g2d.element.handler.TerminalTopology;
-import org.simantics.g2d.element.handler.impl.BranchPointTerminal;
-import org.simantics.g2d.element.impl.Element;
-import org.simantics.g2d.elementclass.BranchPoint;
-import org.simantics.g2d.elementclass.BranchPoint.Direction;
-import org.simantics.g2d.elementclass.FlagClass;
-import org.simantics.g2d.elementclass.FlagHandler;
-import org.simantics.g2d.participant.RenderingQualityInteractor;
-import org.simantics.g2d.participant.TransformUtil;
-import org.simantics.g2d.utils.geom.DirectionSet;
-import org.simantics.modeling.ModelingResources;
-import org.simantics.scenegraph.g2d.G2DParentNode;
-import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
-import org.simantics.scenegraph.g2d.events.KeyEvent;
-import org.simantics.scenegraph.g2d.events.KeyEvent.KeyPressedEvent;
-import org.simantics.scenegraph.g2d.events.MouseEvent;
-import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonEvent;
-import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonPressedEvent;
-import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;
-import org.simantics.scenegraph.g2d.events.command.CommandEvent;
-import org.simantics.scenegraph.g2d.events.command.Commands;
-import org.simantics.scenegraph.g2d.nodes.BranchPointNode;
-import org.simantics.scenegraph.g2d.nodes.ShapeNode;
-import org.simantics.scenegraph.g2d.snap.ISnapAdvisor;
-import org.simantics.scenegraph.utils.GeometryUtils;
-import org.simantics.scenegraph.utils.Quality;
-import org.simantics.structural2.modelingRules.ConnectionJudgement;
-import org.simantics.utils.datastructures.Pair;
-import org.simantics.utils.logging.TimeLogger;
-import org.simantics.utils.ui.ErrorLogger;
-import org.simantics.utils.ui.ExceptionUtils;
-
-import gnu.trove.map.hash.THashMap;
-
-/**
- * A basic tool for making connection on diagrams.
- *
- * This version defines the starting, ending and route points of a connection.
- * The routing itself is left up to the diagram router employed by
- * {@link DiagramUtils#validateAndFix(IDiagram, ICanvasContext)}.
- *
- * Manual:
- *
- * This tool is added to the diagram when a connection sequence is initiated by
- * another participant. PointerInteractor is one such participant which adds the
- * tool when a terminal or non-terminal-occupied canvas space is ALT+clicked
- * (see {@link PointerInteractor#checkInitiateConnectTool(MouseEvent, Point2D)}
- * ). The connection will be finished when another allowed terminal is clicked
- * upon or empty canvas space is ALT+clicked. Route points for the connection
- * can be created by clicking around on non-terminal-occupied canvas space while
- * connecting.
- *
- *
- * Connections can be started from and ended in flags by pressing ALT while
- * left-clicking.
- *
- * @author Tuukka Lehtonen
- */
-public class ConnectTool2 extends AbstractMode {
-
- public static final int PAINT_PRIORITY = ElementPainter.ELEMENT_PAINT_PRIORITY + 5;
-
- @Reference
- protected RenderingQualityInteractor quality;
-
- @Dependency
- protected TransformUtil util;
-
- @Dependency
- protected ElementPainter diagramPainter;
-
- @Dependency
- protected PointerInteractor pi;
-
- @Dependency
- protected PickContext pickContext;
-
- /**
- * Start element terminal of the connection. null if connection
- * was started from a flag or a branch point.
- *
- * The value is received by the constructor.
- */
- protected List startTerminals;
-
- /**
- * Refers to any of the possible overlapping start terminals. The value is
- * taken from the first index of {@link #startTerminals} assuming that the
- * first one is the nearest. It is null if
- * {@link #startTerminals} is empty.
- */
- protected TerminalInfo startTerminal;
-
- protected TerminalInfo startFlag;
-
- /**
- * Starting position of the connection, received as an external argument.
- */
- protected final Point2D startPos;
-
- /**
- * true if this tool should create connection continuation
- * flags, false otherwise.
- */
- protected boolean createFlags;
-
- /**
- *
- */
- protected IElementClassProvider elementClassProvider;
-
- /**
- *
- */
- protected Deque controlPoints = new ArrayDeque();
-
- /**
- * Contains null when a connection is started from a new flag
- * or one of the terminals in {@link #startTerminals} when a connection is
- * being created starting from a terminal or possibly a set of terminals.
- *
- *
- * Note that this is different from {@link #startTerminal} which simply
- * represents the first element of {@link #startTerminals}.
- *
- *
- * Only when this value and {@link #endTerminal} is properly set will a
- * connection be created between two element terminals.
- */
- protected TerminalInfo selectedStartTerminal;
-
- /**
- * Element terminal of connection end element. null if
- * connection cannot be ended where it is currently being attempted to end.
- */
- protected TerminalInfo endTerminal;
-
- /**
- * The latest connectability judgment from the active
- * {@link IConnectionAdvisor} should the connection happen between
- * {@link #selectedStartTerminal} and {@link #endTerminal}.
- */
- protected ConnectionJudgement connectionJudgment;
-
- /**
- * The latest connectability judgment from the active
- * {@link IConnectionAdvisor} should the connection happen between
- * {@link #selectedStartTerminal} and {@link #lastRouteGraphTarget}.
- */
- protected ConnectionJudgement attachToConnectionJudgement;
-
- /**
- * If non-null during connection drawing this field tells the direction
- * forced for the current branch point by the user through the UI commands
- * {@link Commands#ROTATE_ELEMENT_CCW} and
- * {@link Commands#ROTATE_ELEMENT_CW}.
- */
- private Direction forcedBranchPointDirection;
-
- /**
- * A temporary variable for use with
- * {@link TerminalTopology#getTerminals(IElement, Collection)}.
- */
- protected Collection terminals = new ArrayList();
-
- /**
- * Previous mouse canvas position recorded by
- * {@link #processMouseMove(MouseMovedEvent)}.
- */
- protected Point2D lastMouseCanvasPos = new Point2D.Double();
-
- /**
- * Set to true once {@link #processMouseMove(MouseMovedEvent)} has been
- * invoked at least once. This is used to tell whether to allow creation of
- * branch points or finising the connection in thin air. It will not be
- * allowed if the mouse has not moved at all since starting the connection.
- */
- protected boolean mouseHasMoved = false;
-
- protected TerminalHoverStrategy originalStrategy = null;
-
- protected TerminalHoverStrategy terminalHoverStrategy = new TerminalHoverStrategy() {
- @Override
- public boolean highlightEnabled() {
- return !isEndingInFlag();
- }
-
- @Override
- public boolean highlight(TerminalInfo ti) {
- boolean reflexive = isStartTerminal(ti.e, ti.t);
- if (reflexive && !allowReflexiveConnections())
- return false;
-
- return canConnect(ti.e, ti.t) != null;
- }
- };
-
- protected final static Composite ALPHA_COMPOSITE = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.75f);
-
- /**
- * Root scene graph node for all visualization performed by this tool.
- */
- protected G2DParentNode ghostNode;
-
- /**
- * Indicates whether the connection is about to be ended into a new
- * flag/branchpoint or not.
- */
- protected TerminalInfo endFlag;
-
- protected G2DParentNode endFlagNode;
-
- private RouteGraphTarget lastRouteGraphTarget;
-
- /**
- * @param startTerminal
- * @param mouseId
- * @param startCanvasPos
- */
- public ConnectTool2(TerminalInfo startTerminal, int mouseId, Point2D startCanvasPos) {
- this(startTerminal == null ? Collections. emptyList()
- : Collections.singletonList(startTerminal),
- mouseId,
- startCanvasPos);
- }
-
- /**
- * @param startTerminals
- * @param mouseId
- * @param startCanvasPos
- */
- public ConnectTool2(List startTerminals, int mouseId, Point2D startCanvasPos) {
- super(mouseId);
-
- if (startCanvasPos == null)
- throw new NullPointerException("null start position");
- if (startTerminals == null)
- throw new NullPointerException("null start terminals");
-
- this.startPos = startCanvasPos;
- this.lastMouseCanvasPos.setLocation(startPos);
-
- this.startTerminals = startTerminals;
- this.startTerminal = startTerminals.isEmpty() ? null : startTerminals.get(0);
- }
-
- @Override
- public void addedToContext(ICanvasContext ctx) {
- super.addedToContext(ctx);
-
- if (quality != null)
- quality.setStaticQuality(Quality.LOW);
-
- // Force terminals to always be highlighted without pressing certain
- // keys or key combinations.
- originalStrategy = getHint(TerminalPainter.TERMINAL_HOVER_STRATEGY);
- setHint(TerminalPainter.TERMINAL_HOVER_STRATEGY, terminalHoverStrategy);
- }
-
- @Override
- protected void onDiagramSet(IDiagram newDiagram, IDiagram oldDiagram) {
- if (newDiagram != null) {
- // Get IElementClassProvider
- ISynchronizationContext ctx = newDiagram.getHint(SynchronizationHints.CONTEXT);
- if (ctx != null) {
- this.elementClassProvider = ctx.get(SynchronizationHints.ELEMENT_CLASS_PROVIDER);
- }
-
- // See if flags should be created or not.
- this.createFlags = Boolean.TRUE.equals(newDiagram.getHint(DiagramHints.KEY_USE_CONNECTION_FLAGS));
- startConnection();
- }
- }
-
- @Override
- public void removedFromContext(ICanvasContext ctx) {
- if (getHint(TerminalPainter.TERMINAL_HOVER_STRATEGY) == terminalHoverStrategy) {
- if (originalStrategy != null)
- setHint(TerminalPainter.TERMINAL_HOVER_STRATEGY, originalStrategy);
- else
- removeHint(TerminalPainter.TERMINAL_HOVER_STRATEGY);
- }
-
- if (quality != null)
- quality.setStaticQuality(null);
-
- super.removedFromContext(ctx);
- }
-
- protected void startConnection() {
- Point2D startPos = (Point2D) this.startPos.clone();
- ISnapAdvisor snapAdvisor = getHint(DiagramHints.SNAP_ADVISOR);
- if (snapAdvisor != null)
- snapAdvisor.snap(startPos);
-
- // Resolve the first element and terminal of the connection.
- ControlPoint start = new ControlPoint(startPos);
-
- if (startTerminal != null) {
- assert ElementUtils.peekDiagram(startTerminal.e) == diagram;
- Point2D terminalPos = new Point2D.Double(startTerminal.posDia.getTranslateX(),
- startTerminal.posDia.getTranslateY());
- start.setPosition(terminalPos).setAttachedToTerminal(startTerminal);
- } else {
- // Create TerminalInfo describing the flag to be created.
- if (createFlags) {
- // This prevents connection creation from creating a branch
- // point in place of this flag.
- startFlag = createFlag(EdgeEnd.Begin);
- start.setAttachedToTerminal(startFlag);
- showElement(ghostNode, "startFlag", startFlag.e, startPos);
- }
- }
- controlPoints.add(start);
- controlPoints.add(new ControlPoint(startPos));
-
- // Make sure that we are ending with a flag if ALT is pressed.
- // This makes the tool always start with a flag which can be quite
- // cumbersome and is therefore disabled. The current version will not
- // end the connection if the mouse has not moved at all.
- //if (keyUtil.isKeyPressed(java.awt.event.KeyEvent.VK_ALT)) {
- // endWithoutTerminal(lastMouseCanvasPos, true);
- //}
- }
-
- @SGInit
- public void initSG(G2DParentNode parent) {
- ghostNode = parent.addNode(G2DParentNode.class);
- ghostNode.setZIndex(PAINT_PRIORITY);
-
- ShapeNode pathNode = ghostNode.getOrCreateNode("path", ShapeNode.class);
- pathNode.setColor(new Color(160, 0, 0));
- pathNode.setStroke(new BasicStroke(0.1f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10,
- new float[] { 0.5f, 0.2f }, 0));
- pathNode.setScaleStroke(false);
- pathNode.setZIndex(0);
-
- G2DParentNode points = ghostNode.getOrCreateNode("points", G2DParentNode.class);
- points.setZIndex(1);
-
- updateSG();
- }
-
- private RouteTerminal addControlPoint(RouteGraph routeGraph, ControlPoint cp) {
- TerminalInfo ti = cp.getAttachedTerminal();
- if(ti != null && ti != startFlag && ti != endFlag) {
- Rectangle2D bounds = ElementUtils.getElementBoundsOnDiagram(ti.e, new Rectangle2D.Double());
- GeometryUtils.expandRectangle(bounds, 2);
- int allowedDirections = RouteGraphConnectionClass.shortestDirectionOutOfBounds(
- ti.posDia.getTranslateX(), ti.posDia.getTranslateY(), bounds);
- return routeGraph.addTerminal(ti.posDia.getTranslateX(), ti.posDia.getTranslateY(),
- bounds, allowedDirections, PlainLineEndStyle.INSTANCE);
- }
- else {
- double x = cp.getPosition().getX();
- double y = cp.getPosition().getY();
- int allowedDirections = 0xf;
- switch(cp.getDirection()) {
- case Horizontal: allowedDirections = 5; break;
- case Vertical: allowedDirections = 10; break;
- case Any: allowedDirections = 15; break;
- }
- return routeGraph.addTerminal(x, y, x, y, x, y, allowedDirections);
- }
- }
-
- protected void updateSG() {
- if (controlPoints.size() != 2)
- return;
-
- ControlPoint begin = controlPoints.getFirst();
- ControlPoint end = controlPoints.getLast();
-
- RouteGraph routeGraph = new RouteGraph();
- RouteTerminal a = addControlPoint(routeGraph, begin);
- RouteTerminal b = addControlPoint(routeGraph, end);
- routeGraph.link(a, b);
-
- Path2D path = routeGraph.getPath2D();
-
- // Create scene graph to visualize the connection.
- ShapeNode pathNode = ghostNode.getOrCreateNode("path", ShapeNode.class);
- pathNode.setShape(path);
-
- setDirty();
- }
-
- private G2DParentNode showElement(G2DParentNode parent, String nodeId, IElement element, Point2D pos) {
- return showElement(parent, nodeId, element, AffineTransform.getTranslateInstance(pos.getX(), pos.getY()));
- }
-
- private G2DParentNode showElement(G2DParentNode parent, String nodeId, IElement element, AffineTransform tr) {
- G2DParentNode elementParent = parent.getOrCreateNode(nodeId, G2DParentNode.class);
- elementParent.setTransform(tr);
- elementParent.removeNodes();
- for (SceneGraph sg : element.getElementClass().getItemsByClass(SceneGraph.class))
- sg.init(element, elementParent);
- return elementParent;
- }
-
- @SGCleanup
- public void cleanupSG() {
- ghostNode.remove();
- ghostNode = null;
- }
-
- @EventHandler(priority = 200)
- public boolean handleCommandEvents(CommandEvent ce) {
- if (ce.command.equals(Commands.CANCEL)) {
- setDirty();
- remove();
- return true;
- } else if (ce.command.equals(Commands.ROTATE_ELEMENT_CCW) || ce.command.equals(Commands.ROTATE_ELEMENT_CW)) {
- return rotateLastBranchPoint(ce.command.equals(Commands.ROTATE_ELEMENT_CW));
- }
- return false;
- }
-
- @EventHandler(priority = PointerInteractor.TOOL_PRIORITY + 20)
- public boolean handleKeyEvents(KeyEvent ke) {
- if (ke instanceof KeyPressedEvent) {
- // Back-space, cancel prev bend
- if (ke.keyCode == java.awt.event.KeyEvent.VK_BACK_SPACE)
- return cancelPreviousBend();
- }
-
- if (ke.keyCode == java.awt.event.KeyEvent.VK_ALT) {
- if (createFlags) {
- endWithoutTerminal(lastMouseCanvasPos, shouldEndWithFlag(ke instanceof KeyPressedEvent));
- return true;
- }
- }
-
- return false;
- }
-
- @EventHandler(priority = PointerInteractor.TOOL_PRIORITY + 20)
- public boolean handleEvent(MouseEvent me) {
- // Only handle events for the connection-initiating mouse
- if (me.mouseId != mouseId)
- return false;
-
- if (me instanceof MouseMovedEvent)
- return processMouseMove((MouseMovedEvent) me);
-
- if (me instanceof MouseButtonPressedEvent)
- return processMouseButtonPress((MouseButtonPressedEvent) me);
-
- return false;
- }
-
- protected boolean processMouseMove(MouseMovedEvent me) {
- mouseHasMoved = true;
-
- Point2D mouseControlPos = me.controlPosition;
- Point2D mouseCanvasPos = util.controlToCanvas(mouseControlPos, new Point2D.Double());
-
- ISnapAdvisor snapAdvisor = getHint(DiagramHints.SNAP_ADVISOR);
- if (snapAdvisor != null)
- snapAdvisor.snap(mouseCanvasPos);
-
- // Record last snapped canvas position of mouse.
- this.lastMouseCanvasPos.setLocation(mouseCanvasPos);
-
- if (isEndingInFlag()) {
- endFlagNode.setTransform(AffineTransform.getTranslateInstance(mouseCanvasPos.getX(), mouseCanvasPos.getY()));
- }
-
- List tis = pi.pickTerminals(me.controlPosition);
- tis = TerminalUtil.findNearestOverlappingTerminals(tis);
- if (!tis.isEmpty() && !containsStartTerminal(tis)) {
- //System.out.println("end terminals (" + tis.size() + "):\n" + EString.implode(tis));
- for (TerminalInfo ti : tis) {
- Pair canConnect = canConnect(ti.e, ti.t);
- if (canConnect != null) {
- connectionJudgment = canConnect.first;
-
- if (!isEndingInFlag() || !TerminalUtil.isSameTerminal(ti, endTerminal)) {
- if (canConnect.second != null) {
- controlPoints.getFirst()
- .setPosition(canConnect.second.posDia)
- .setAttachedToTerminal(canConnect.second);
- }
- controlPoints.getLast()
- .setPosition(ti.posDia)
- .setAttachedToTerminal(ti);
-
- selectedStartTerminal = canConnect.second;
- endTerminal = ti;
- }
-
- // Make sure that we are ending with a flag if ALT is pressed
- // and no end terminal is defined.
- if (!endWithoutTerminal(lastMouseCanvasPos, shouldEndWithFlag(me)))
- updateSG();
- return false;
- }
- }
- } else {
- RouteGraphTarget cp = RouteGraphConnectTool.pickRouteGraphConnection(
- diagram,
- pi.getCanvasPickShape(me.controlPosition),
- pi.getPickDistance());
- if (cp != null) {
- // Remove branch point highlight from previously picked route graph.
- if (lastRouteGraphTarget != null && cp.getNode() != lastRouteGraphTarget.getNode())
- cp.getNode().showBranchPoint(null);
- lastRouteGraphTarget = cp;
-
- // Validate connection before visualizing connectability
- Point2D isectPos = cp.getIntersectionPosition();
- TerminalInfo ti = TerminalInfo.create(
- isectPos,
- cp.getElement(),
- BranchPointTerminal.existingTerminal(
- isectPos,
- DirectionSet.ANY,
- BranchPointNode.SHAPE),
- BranchPointNode.SHAPE);
- Pair canConnect = canConnect(ti.e, ti.t);
- if (canConnect != null) {
- attachToConnectionJudgement = canConnect.first;
- controlPoints.getLast().setPosition(ti.posDia).setAttachedToTerminal(ti);
- endTerminal = ti;
- cp.getNode().showBranchPoint(isectPos);
- if (!endWithoutTerminal(lastMouseCanvasPos, shouldEndWithFlag(me)))
- updateSG();
- return false;
- }
- } else {
- if (lastRouteGraphTarget != null) {
- lastRouteGraphTarget.getNode().showBranchPoint(null);
- lastRouteGraphTarget = null;
- }
- }
- }
-
- connectionJudgment = null;
- attachToConnectionJudgement = null;
- if (isEndTerminalDefined()) {
- // CASE: Mouse was previously on top of a valid terminal to end
- // the connection. Now the mouse has been moved where there is
- // no longer a terminal to connect to.
- //
- // => Disconnect the last edge segment from the previous
- // terminal, mark endElement/endTerminal non-existent
- // and connect the disconnected edge to a new branch point.
-
- controlPoints.getLast()
- .setPosition(mouseCanvasPos)
- .setDirection(calculateCurrentBranchPointDirection())
- .setAttachedToTerminal(null);
-
- endTerminal = null;
- } else {
- // CASE: Mouse was not previously on top of a valid ending
- // element terminal.
- //
- // => Move and re-orient last branch point.
-
- controlPoints.getLast()
- .setPosition(mouseCanvasPos)
- .setDirection(calculateCurrentBranchPointDirection());
- }
-
- // Make sure that we are ending with a flag if ALT is pressed and no end
- // terminal is defined.
- if (!endWithoutTerminal(lastMouseCanvasPos, shouldEndWithFlag(me)))
- updateSG();
-
- return false;
- }
-
- protected boolean processMouseButtonPress(MouseButtonPressedEvent e) {
- MouseButtonEvent me = e;
-
- // Do nothing before the mouse has moved at least a little.
- // This prevents the user from ending the connection right where
- // it started.
- if (!mouseHasMoved)
- return true;
-
- if (me.button == MouseEvent.LEFT_BUTTON) {
- Point2D mouseControlPos = me.controlPosition;
- Point2D mouseCanvasPos = util.getInverseTransform().transform(mouseControlPos, new Point2D.Double());
-
- ISnapAdvisor snapAdvisor = getHint(DiagramHints.SNAP_ADVISOR);
- if (snapAdvisor != null)
- snapAdvisor.snap(mouseCanvasPos);
-
- if (isEndTerminalDefined() && connectionJudgment != null) {
- // Clicked on an allowed end terminal. End connection & end mode.
- createConnection();
- remove();
- return true;
- } else if (lastRouteGraphTarget != null && attachToConnectionJudgement != null) {
- lastRouteGraphTarget.getNode().showBranchPoint(null);
- attachToConnection();
- remove();
- return true;
- } else {
- // Finish connection in thin air only if the
- // connection was started from a valid terminal.
- if (me.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK) && !startTerminals.isEmpty()) {
- Pair pair = canConnect(null, null);
- if (pair != null) {
- connectionJudgment = (ConnectionJudgement) pair.first;
- selectedStartTerminal = pair.second;
-// endFlag = createFlag(EdgeEnd.End);
-// controlPoints.getLast().setAttachedToTerminal(endFlag);
- createConnection();
- setDirty();
- remove();
- } else {
- // Inform the user why connection couldn't be created.
- String tmsg = terminalsToString(startTerminals);
- ErrorLogger.defaultLogWarning("Can't resolve connection type for new connection when starting from one of the following terminals:\n" + tmsg, null);
- }
- return true;
- } else if (routePointsAllowed()
- && (me.stateMask & (MouseEvent.ALT_MASK | MouseEvent.SHIFT_MASK | MouseEvent.CTRL_MASK)) == 0) {
- // Add new connection control point.
- controlPoints.add(newControlPointWithCalculatedDirection(mouseCanvasPos));
- resetForcedBranchPointDirection();
- updateSG();
- }
- }
-
- // Eat the event to prevent other participants from doing
- // incompatible things while in this connection mode.
- return true;
- } else if (me.button == MouseEvent.RIGHT_BUTTON) {
- return cancelPreviousBend();
- }
-
- return false;
- }
-
- private void attachToConnection() {
- ConnectionJudgement judgment = this.attachToConnectionJudgement;
- if (judgment == null) {
- ErrorLogger.defaultLogError("Cannot attach to connection, no judgment available on connection validity", null);
- return;
- }
-
- ConnectionBuilder builder = new ConnectionBuilder(this.diagram);
- RouteGraph before = lastRouteGraphTarget.getNode().getRouteGraph();
- THashMap