--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/tools/IdealGraphVisualizer/ControlFlow/src/com/sun/hotspot/igv/controlflow/ControlFlowScene.java	Wed Apr 29 08:31:28 2015 +0200
@@ -0,0 +1,299 @@
+/*
+ * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+package com.sun.hotspot.igv.controlflow;
+
+import com.sun.hotspot.igv.data.InputBlockEdge;
+import com.sun.hotspot.igv.data.InputBlock;
+import com.sun.hotspot.igv.data.InputGraph;
+import com.sun.hotspot.igv.data.services.InputGraphProvider;
+import com.sun.hotspot.igv.data.InputNode;
+import com.sun.hotspot.igv.util.LookupHistory;
+import java.awt.Color;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Set;
+import javax.swing.BorderFactory;
+import org.netbeans.api.visual.action.ActionFactory;
+import org.netbeans.api.visual.action.MoveProvider;
+import org.netbeans.api.visual.action.RectangularSelectDecorator;
+import org.netbeans.api.visual.action.RectangularSelectProvider;
+import org.netbeans.api.visual.action.SelectProvider;
+import org.netbeans.api.visual.action.WidgetAction;
+import org.netbeans.api.visual.anchor.AnchorFactory;
+import org.netbeans.api.visual.anchor.AnchorShape;
+import org.netbeans.api.visual.router.RouterFactory;
+import org.netbeans.api.visual.widget.LayerWidget;
+import org.netbeans.api.visual.widget.Widget;
+import org.netbeans.api.visual.graph.GraphScene;
+import org.netbeans.api.visual.graph.layout.GraphLayout;
+import org.netbeans.api.visual.layout.LayoutFactory;
+import org.netbeans.api.visual.layout.SceneLayout;
+import org.netbeans.api.visual.widget.ConnectionWidget;
+
+/**
+ *
+ * @author Thomas Wuerthinger
+ */
+public class ControlFlowScene extends GraphScene<InputBlock, InputBlockEdge> implements SelectProvider, MoveProvider, RectangularSelectDecorator, RectangularSelectProvider {
+
+    private HashSet<BlockWidget> selection;
+    private InputGraph oldGraph;
+    private LayerWidget edgeLayer;
+    private LayerWidget mainLayer;
+    private LayerWidget selectLayer;
+    private WidgetAction hoverAction = this.createWidgetHoverAction();
+    private WidgetAction selectAction = new DoubleClickSelectAction(this);
+    private WidgetAction moveAction = ActionFactory.createMoveAction(null, this);
+
+    public ControlFlowScene() {
+        selection = new HashSet<BlockWidget>();
+
+        this.getInputBindings().setZoomActionModifiers(0);
+        this.setLayout(LayoutFactory.createAbsoluteLayout());
+
+        mainLayer = new LayerWidget(this);
+        this.addChild(mainLayer);
+
+        edgeLayer = new LayerWidget(this);
+        this.addChild(edgeLayer);
+        
+        selectLayer = new LayerWidget(this);
+        this.addChild(selectLayer);
+
+        this.getActions().addAction(hoverAction);
+        this.getActions().addAction(selectAction);
+        this.getActions().addAction(ActionFactory.createRectangularSelectAction(this, selectLayer, this));
+        this.getActions().addAction(ActionFactory.createMouseCenteredZoomAction(1.1));
+    }
+
+    public void setGraph(InputGraph g) {
+        if (g == oldGraph) {
+            return;
+        }
+        oldGraph = g;
+
+        ArrayList<InputBlock> blocks = new ArrayList<InputBlock>(this.getNodes());
+        for (InputBlock b : blocks) {
+            removeNode(b);
+        }
+
+        ArrayList<InputBlockEdge> edges = new ArrayList<InputBlockEdge>(this.getEdges());
+        for (InputBlockEdge e : edges) {
+            removeEdge(e);
+        }
+
+        for (InputBlock b : g.getBlocks()) {
+            addNode(b);
+        }
+
+        for (InputBlockEdge e : g.getBlockEdges()) {
+            addEdge(e);
+            assert g.getBlocks().contains(e.getFrom());
+            assert g.getBlocks().contains(e.getTo());
+            this.setEdgeSource(e, e.getFrom());
+            this.setEdgeTarget(e, e.getTo());
+        }
+
+        GraphLayout<InputBlock, InputBlockEdge> layout = new HierarchicalGraphLayout<InputBlock, InputBlockEdge>();//GridGraphLayout();
+        SceneLayout sceneLayout = LayoutFactory.createSceneGraphLayout(this, layout);
+        sceneLayout.invokeLayout();
+
+        this.validate();
+    }
+
+    public void clearSelection() {
+        for (BlockWidget w : selection) {
+            w.setState(w.getState().deriveSelected(false));
+        }
+        selection.clear();
+        selectionChanged();
+    }
+
+    public void selectionChanged() {
+        InputGraphProvider p = LookupHistory.getLast(InputGraphProvider.class);//)Utilities.actionsGlobalContext().lookup(InputGraphProvider.class);
+        if (p != null) {
+            Set<InputNode> inputNodes = new HashSet<InputNode>();
+            for (BlockWidget w : selection) {
+                inputNodes.addAll(w.getBlock().getNodes());
+            }
+            p.setSelectedNodes(inputNodes);
+        }
+    }
+
+    public void addToSelection(BlockWidget widget) {
+        widget.setState(widget.getState().deriveSelected(true));
+        selection.add(widget);
+        selectionChanged();
+    }
+
+    public void removeFromSelection(BlockWidget widget) {
+        widget.setState(widget.getState().deriveSelected(false));
+        selection.remove(widget);
+        selectionChanged();
+    }
+
+    public boolean isAimingAllowed(Widget widget, Point point, boolean b) {
+        return false;
+    }
+
+    public boolean isSelectionAllowed(Widget widget, Point point, boolean b) {
+        return true;
+    }
+
+    public void select(Widget widget, Point point, boolean change) {
+        if (widget == this) {
+            clearSelection();
+        } else {
+
+            assert widget instanceof BlockWidget;
+            BlockWidget bw = (BlockWidget) widget;
+            if (change) {
+                if (selection.contains(bw)) {
+                    removeFromSelection(bw);
+                } else {
+                    addToSelection(bw);
+                }
+            } else {
+                if (!selection.contains(bw)) {
+                    clearSelection();
+                    addToSelection(bw);
+                }
+            }
+        }
+    }
+
+    public void movementStarted(Widget widget) {
+    }
+
+    public void movementFinished(Widget widget) {
+    }
+
+    public Point getOriginalLocation(Widget widget) {
+        return widget.getPreferredLocation();
+    }
+
+    public void setNewLocation(Widget widget, Point location) {
+        if (selection.contains(widget)) {
+            // move entire selection
+            Point originalLocation = getOriginalLocation(widget);
+            int xOffset = location.x - originalLocation.x;
+            int yOffset = location.y - originalLocation.y;
+            for (Widget w : selection) {
+                Point p = new Point(w.getPreferredLocation());
+                p.translate(xOffset, yOffset);
+                w.setPreferredLocation(p);
+            }
+        } else {
+            widget.setPreferredLocation(location);
+        }
+    }
+
+    public Widget createSelectionWidget() {
+        Widget widget = new Widget(this);
+        widget.setOpaque(false);
+        widget.setBorder(BorderFactory.createLineBorder(Color.black, 2));
+        widget.setForeground(Color.red);
+        return widget;
+    }
+
+    public void performSelection(Rectangle rectangle) {
+
+        if (rectangle.width < 0) {
+            rectangle.x += rectangle.width;
+            rectangle.width *= -1;
+        }
+
+        if (rectangle.height < 0) {
+            rectangle.y += rectangle.height;
+            rectangle.height *= -1;
+        }
+
+        boolean changed = false;
+        for (InputBlock b : this.getNodes()) {
+            BlockWidget w = (BlockWidget) findWidget(b);
+            Rectangle r = new Rectangle(w.getBounds());
+            r.setLocation(w.getLocation());
+            if (r.intersects(rectangle)) {
+                if (!selection.contains(w)) {
+                    changed = true;
+                    selection.add(w);
+                    w.setState(w.getState().deriveSelected(true));
+                }
+            } else {
+                if (selection.contains(w)) {
+                    changed = true;
+                    selection.remove(w);
+                    w.setState(w.getState().deriveSelected(false));
+                }
+            }
+        }
+
+        if (changed) {
+            selectionChanged();
+        }
+
+    }
+
+    protected Widget attachNodeWidget(InputBlock node) {
+        BlockWidget w = new BlockWidget(this, node);
+        mainLayer.addChild(w);
+        w.getActions().addAction(hoverAction);
+        w.getActions().addAction(selectAction);
+        w.getActions().addAction(moveAction);
+        return w;
+    }
+
+    protected Widget attachEdgeWidget(InputBlockEdge edge) {
+        BlockConnectionWidget w = new BlockConnectionWidget(this, edge);
+        switch (edge.getState()) {
+            case NEW:
+                w.setBold(true);
+                break;
+            case DELETED:
+                w.setDashed(true);
+                break;
+        }
+        w.setRouter(RouterFactory.createDirectRouter());
+        w.setTargetAnchorShape(AnchorShape.TRIANGLE_FILLED);
+        edgeLayer.addChild(w);
+        return w;
+    }
+
+    protected void attachEdgeSourceAnchor(InputBlockEdge edge, InputBlock oldSourceNode, InputBlock sourceNode) {
+        Widget w = this.findWidget(edge);
+        assert w instanceof ConnectionWidget;
+        ConnectionWidget cw = (ConnectionWidget) w;
+        cw.setSourceAnchor(AnchorFactory.createRectangularAnchor(findWidget(sourceNode)));
+
+    }
+
+    protected void attachEdgeTargetAnchor(InputBlockEdge edge, InputBlock oldTargetNode, InputBlock targetNode) {
+        Widget w = this.findWidget(edge);
+        assert w instanceof ConnectionWidget;
+        ConnectionWidget cw = (ConnectionWidget) w;
+        cw.setTargetAnchor(AnchorFactory.createRectangularAnchor(findWidget(targetNode)));
+    }
+}