8344204: IGV: Button to enable/disable cutting of long edges

Reviewed-by: rcastanedalo, chagedorn

src/utils/IdealGraphVisualizer/HierarchicalLayout/src/main/java/com/sun/hotspot/igv/hierarchicallayout/HierarchicalCFGLayoutManager.java

@@ -45,6 +45,12 @@ public class HierarchicalCFGLayoutManager implements LayoutManager {
         fontMetrics = canvas.getFontMetrics(font);
     }
 
+    @Override
+    public void setCutEdges(boolean enable) {
+        subManager.setCutEdges(enable);
+        manager.setCutEdges(enable);
+    }
+
     public void setSubManager(LayoutManager manager) {
         this.subManager = manager;
     }

src/utils/IdealGraphVisualizer/HierarchicalLayout/src/main/java/com/sun/hotspot/igv/hierarchicallayout/HierarchicalClusterLayoutManager.java

@@ -43,6 +43,12 @@ public class HierarchicalClusterLayoutManager implements LayoutManager {
         this.combine = combine;
     }
 
+    @Override
+    public void setCutEdges(boolean enable) {
+        subManager.setCutEdges(enable);
+        manager.setCutEdges(enable);
+    }
+
     public void doLayout(LayoutGraph graph, Set<? extends Link> importantLinks) {
         doLayout(graph);
     }

src/utils/IdealGraphVisualizer/HierarchicalLayout/src/main/java/com/sun/hotspot/igv/hierarchicallayout/HierarchicalLayoutManager.java

@@ -136,8 +136,9 @@ public class HierarchicalLayoutManager implements LayoutManager {
         this.layerOffset = layerOffset;
     }
 
-    public void setMaxLayerLength(int v) {
+    @Override
-        maxLayerLength = v;
+    public void setCutEdges(boolean enable) {
+        maxLayerLength = enable ? 10 : -1;
     }
 
     public void setMinLayerDifference(int v) {

src/utils/IdealGraphVisualizer/HierarchicalLayout/src/main/java/com/sun/hotspot/igv/hierarchicallayout/HierarchicalStableLayoutManager.java

@@ -38,8 +38,8 @@ public class HierarchicalStableLayoutManager {
     public static final int X_OFFSET = 8;
     public static final int LAYER_OFFSET = 8;
     // Algorithm global data structures
-    private HashSet<? extends Vertex> currentVertices;
+    private Set<? extends Vertex> currentVertices;
-    private HashSet<? extends Link> currentLinks;
+    private Set<? extends Link> currentLinks;
     private Set<Link> reversedLinks;
     private List<LayoutNode> nodes;
     private final HashMap<Vertex, LayoutNode> vertexToLayoutNode;
@@ -51,10 +51,19 @@ public class HierarchicalStableLayoutManager {
     private HashMap<Vertex, VertexAction> vertexToAction;
     private List<VertexAction> vertexActions;
     private List<LinkAction> linkActions;
-    private HashSet<? extends Vertex> oldVertices;
+    private Set<? extends Vertex> oldVertices;
-    private HashSet<? extends Link> oldLinks;
+    private Set<? extends Link> oldLinks;
     private boolean shouldRedrawLayout = true;
     private boolean shouldRemoveEmptyLayers = true;
+    private boolean cutEdges = false;
+
+    public void doLayout(LayoutGraph layoutGraph) {
+        boolean oldShouldRedrawLayout = shouldRedrawLayout;
+        setShouldRedrawLayout(true);
+        updateLayout(layoutGraph.getVertices(), layoutGraph.getLinks());
+        setShouldRedrawLayout(oldShouldRedrawLayout);
+    }
+
 
     enum Action {
         ADD,
@@ -90,6 +99,15 @@ public class HierarchicalStableLayoutManager {
         nodes = new ArrayList<>();
     }
 
+    public void setCutEdges(boolean enable) {
+        cutEdges = enable;
+        manager.setCutEdges(enable);
+    }
+
+    public boolean getCutEdges() {
+        return cutEdges;
+    }
+
     private int calculateOptimalBoth(LayoutNode n) {
         if (n.preds.isEmpty() && n.succs.isEmpty()) {
             return n.x;
@@ -396,7 +414,7 @@ public class HierarchicalStableLayoutManager {
         this.shouldRedrawLayout = shouldRedrawLayout;
     }
 
-    public void updateLayout(HashSet<? extends Vertex> vertices, HashSet<? extends Link> links) {
+    public void updateLayout(Set<? extends Vertex> vertices, Set<? extends Link> links) {
         currentVertices = vertices;
         currentLinks = links;
         reversedLinks = new HashSet<>();

src/utils/IdealGraphVisualizer/HierarchicalLayout/src/main/java/com/sun/hotspot/igv/hierarchicallayout/LinearLayoutManager.java

@@ -39,6 +39,9 @@ public class LinearLayoutManager implements LayoutManager {
         this.vertexRank = vertexRank;
     }
 
+    @Override
+    public void setCutEdges(boolean enable) {}
+
     @Override
     public void doLayout(LayoutGraph graph) {
         doLayout(graph, new HashSet<>());

src/utils/IdealGraphVisualizer/Layout/src/main/java/com/sun/hotspot/igv/layout/LayoutManager.java

@@ -31,6 +31,8 @@ import java.util.Set;
  */
 public interface LayoutManager {
 
+    void setCutEdges(boolean enable);
+
     void doLayout(LayoutGraph graph);
 
     void doLayout(LayoutGraph graph, Set<? extends Link> importantLinks);

src/utils/IdealGraphVisualizer/View/src/main/java/com/sun/hotspot/igv/view/DiagramScene.java

@@ -700,12 +700,19 @@ public class DiagramScene extends ObjectScene implements DiagramViewer, DoubleCl
     }
 
     private void doStableSeaLayout(HashSet<Figure> visibleFigures, HashSet<Connection> visibleConnections) {
+        boolean enable = model.getCutEdges();
+        boolean previous = hierarchicalStableLayoutManager.getCutEdges();
+        hierarchicalStableLayoutManager.setCutEdges(enable);
+        if (enable != previous) {
+            hierarchicalStableLayoutManager.doLayout(new LayoutGraph(visibleConnections, visibleFigures));
+        } else {
             hierarchicalStableLayoutManager.updateLayout(visibleFigures, visibleConnections);
         }
+    }
 
     private void doSeaLayout(HashSet<Figure> figures, HashSet<Connection> edges) {
         HierarchicalLayoutManager manager = new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.SAME_OUTPUTS);
-        manager.setMaxLayerLength(10);
+        manager.setCutEdges(model.getCutEdges());
         manager.doLayout(new LayoutGraph(edges, figures));
         hierarchicalStableLayoutManager.setShouldRedrawLayout(true);
     }
@@ -713,7 +720,7 @@ public class DiagramScene extends ObjectScene implements DiagramViewer, DoubleCl
     private void doClusteredLayout(HashSet<Connection> edges) {
         HierarchicalClusterLayoutManager m = new HierarchicalClusterLayoutManager(HierarchicalLayoutManager.Combine.SAME_OUTPUTS);
         HierarchicalLayoutManager manager = new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.SAME_OUTPUTS);
-        manager.setMaxLayerLength(9);
+        manager.setCutEdges(model.getCutEdges());
         manager.setMinLayerDifference(3);
         m.setManager(manager);
         m.setSubManager(new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.SAME_OUTPUTS));
@@ -724,7 +731,7 @@ public class DiagramScene extends ObjectScene implements DiagramViewer, DoubleCl
         Diagram diagram = getModel().getDiagram();
         HierarchicalCFGLayoutManager m = new HierarchicalCFGLayoutManager();
         HierarchicalLayoutManager manager = new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.SAME_OUTPUTS);
-        manager.setMaxLayerLength(9);
+        manager.setCutEdges(model.getCutEdges());
         manager.setMinLayerDifference(1);
         manager.setLayoutSelfEdges(true);
         manager.setXOffset(25);

src/utils/IdealGraphVisualizer/View/src/main/java/com/sun/hotspot/igv/view/DiagramViewModel.java

@@ -36,6 +36,7 @@ import com.sun.hotspot.igv.graph.Figure;
 import com.sun.hotspot.igv.graph.MatcherSelector;
 import com.sun.hotspot.igv.settings.Settings;
 import com.sun.hotspot.igv.util.RangeSliderModel;
+import com.sun.hotspot.igv.view.actions.CutEdgesAction;
 import com.sun.hotspot.igv.view.actions.GlobalSelectionAction;
 import java.awt.Color;
 import java.util.*;
@@ -68,8 +69,8 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
     private boolean showCFG;
     private boolean showNodeHull;
     private boolean showEmptyBlocks;
-    private boolean hideDuplicates;
     private static boolean globalSelection = false;
+    private static boolean cutEdges = false;
 
     private final ChangedListener<FilterChain> filterChainChangedListener = changedFilterChain -> {
         assert filterChain == changedFilterChain;
@@ -80,6 +81,18 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
         return group;
     }
 
+    public boolean getCutEdges() {
+        return cutEdges;
+    }
+
+    public void setCutEdges(boolean enable, boolean fire) {
+        boolean prevEnable = cutEdges;
+        cutEdges = enable;
+        if (fire && prevEnable != enable) {
+            diagramChangedEvent.fire();
+        }
+    }
+
     public boolean getGlobalSelection() {
         return globalSelection;
     }
@@ -154,25 +167,6 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
         diagramChangedEvent.fire();
     }
 
-    public void setHideDuplicates(boolean hideDuplicates) {
-        this.hideDuplicates = hideDuplicates;
-        InputGraph currentGraph = getFirstGraph();
-        if (hideDuplicates) {
-            // Back up to the unhidden equivalent graph
-            int index = graphs.indexOf(currentGraph);
-            while (graphs.get(index).getProperties().get("_isDuplicate") != null) {
-                index--;
-            }
-            currentGraph = graphs.get(index);
-        }
-        filterGraphs();
-        selectGraph(currentGraph);
-    }
-
-    public boolean getHideDuplicates() {
-        return hideDuplicates;
-    }
-
     private void initGroup() {
         group.getChangedEvent().addListener(g -> {
             assert g == group;
@@ -191,6 +185,7 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
     public DiagramViewModel(DiagramViewModel model) {
         super(model);
         globalSelection = false;
+        cutEdges = false;
         group = model.getGroup();
         initGroup();
         graphs = new ArrayList<>(model.graphs);
@@ -205,12 +200,12 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
         filtersOrder = provider.getAllFiltersOrdered();
 
         globalSelection = GlobalSelectionAction.get(GlobalSelectionAction.class).isSelected();
+        cutEdges = CutEdgesAction.get(CutEdgesAction.class).isSelected();
         showCFG = model.getShowCFG();
         showSea = model.getShowSea();
         showBlocks = model.getShowBlocks();
         showNodeHull = model.getShowNodeHull();
         showEmptyBlocks = model.getShowEmptyBlocks();
-        hideDuplicates = model.getHideDuplicates();
 
         hiddenNodes = new HashSet<>(model.getHiddenNodes());
         selectedNodes = new HashSet<>();
@@ -228,13 +223,13 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
         filtersOrder = provider.getAllFiltersOrdered();
 
         globalSelection = GlobalSelectionAction.get(GlobalSelectionAction.class).isSelected();
+        cutEdges = CutEdgesAction.get(CutEdgesAction.class).isSelected();
         showStableSea = Settings.get().getInt(Settings.DEFAULT_VIEW, Settings.DEFAULT_VIEW_DEFAULT) == Settings.DefaultView.STABLE_SEA_OF_NODES;
         showSea = Settings.get().getInt(Settings.DEFAULT_VIEW, Settings.DEFAULT_VIEW_DEFAULT) == Settings.DefaultView.SEA_OF_NODES;
         showBlocks = Settings.get().getInt(Settings.DEFAULT_VIEW, Settings.DEFAULT_VIEW_DEFAULT) == Settings.DefaultView.CLUSTERED_SEA_OF_NODES;
         showCFG = Settings.get().getInt(Settings.DEFAULT_VIEW, Settings.DEFAULT_VIEW_DEFAULT) == Settings.DefaultView.CONTROL_FLOW_GRAPH;
         showNodeHull = true;
         showEmptyBlocks = true;
-        hideDuplicates = false;
 
         hiddenNodes = new HashSet<>();
         selectedNodes = new HashSet<>();
@@ -422,12 +417,9 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
         ArrayList<InputGraph> result = new ArrayList<>();
         List<String> positions = new ArrayList<>();
         for (InputGraph graph : group.getGraphs()) {
-            String duplicate = graph.getProperties().get("_isDuplicate");
-            if (duplicate == null || !hideDuplicates) {
             result.add(graph);
             positions.add(graph.getName());
         }
-        }
         this.graphs = result;
         setPositions(positions);
     }
@@ -460,22 +452,12 @@ public class DiagramViewModel extends RangeSliderModel implements ChangedListene
 
     public void selectGraph(InputGraph graph) {
         int index = graphs.indexOf(graph);
-        if (index == -1 && hideDuplicates) {
-            // A graph was selected that's currently hidden, so unhide and select it.
-            setHideDuplicates(false);
-            index = graphs.indexOf(graph);
-        }
         assert index != -1;
         setPositions(index, index);
     }
 
     public void selectDiffGraph(InputGraph graph) {
         int index = graphs.indexOf(graph);
-        if (index == -1 && hideDuplicates) {
-            // A graph was selected that's currently hidden, so unhide and select it.
-            setHideDuplicates(false);
-            index = graphs.indexOf(graph);
-        }
         assert index != -1;
         int firstIndex = getFirstPosition();
         int secondIndex = getSecondPosition();

src/utils/IdealGraphVisualizer/View/src/main/java/com/sun/hotspot/igv/view/EditorTopComponent.java

@@ -210,7 +210,6 @@ public final class EditorTopComponent extends TopComponent implements TopCompone
         toolBar.addSeparator();
         toolBar.add(new JToggleButton(new PredSuccAction(diagramViewModel.getShowNodeHull())));
         toolBar.add(new JToggleButton(new ShowEmptyBlocksAction(cfgLayoutAction, diagramViewModel.getShowEmptyBlocks())));
-        toolBar.add(new JToggleButton(new HideDuplicatesAction(diagramViewModel.getHideDuplicates())));
 
         toolBar.addSeparator();
         UndoAction undoAction = UndoAction.get(UndoAction.class);
@@ -221,6 +220,11 @@ public final class EditorTopComponent extends TopComponent implements TopCompone
         toolBar.add(redoAction);
 
         toolBar.addSeparator();
+
+        JToggleButton cutEdgesButton = new JToggleButton(CutEdgesAction.get(CutEdgesAction.class));
+        cutEdgesButton.setHideActionText(true);
+        toolBar.add(cutEdgesButton);
+
         JToggleButton globalSelectionButton = new JToggleButton(GlobalSelectionAction.get(GlobalSelectionAction.class));
         globalSelectionButton.setHideActionText(true);
         toolBar.add(globalSelectionButton);
@@ -453,6 +457,7 @@ public final class EditorTopComponent extends TopComponent implements TopCompone
         }
         etc.addSelectedNodes(selectedNodes, false);
         model.setGlobalSelection(GlobalSelectionAction.get(GlobalSelectionAction.class).isSelected(), false);
+        model.setCutEdges(CutEdgesAction.get(CutEdgesAction.class).isSelected(), false);
         etc.resetUndoRedo();
 
         int currentZoomLevel = scene.getZoomPercentage();

src/utils/IdealGraphVisualizer/View/src/main/java/com/sun/hotspot/igv/view/actions/CutEdgesAction.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2024, 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.view.actions;
+
+import com.sun.hotspot.igv.view.EditorTopComponent;
+import javax.swing.AbstractAction;
+import javax.swing.Action;
+import javax.swing.ImageIcon;
+import javax.swing.SwingUtilities;
+import org.openide.awt.ActionID;
+import org.openide.awt.ActionReference;
+import org.openide.awt.ActionReferences;
+import org.openide.awt.ActionRegistration;
+import org.openide.util.HelpCtx;
+import org.openide.util.ImageUtilities;
+import org.openide.util.NbBundle;
+import org.openide.util.actions.CallableSystemAction;
+
+@ActionID(category = "View", id = "com.sun.hotspot.igv.view.actions.CutEdgesAction")
+@ActionRegistration(displayName = "#CTL_CutEdgesAction")
+@ActionReferences({
+        @ActionReference(path = "Menu/Options", position = 350),
+})
+@NbBundle.Messages({
+        "CTL_CutEdgesAction=Cut long edges",
+        "HINT_CutEdgesAction=Cut long edges"
+})
+public final class CutEdgesAction extends CallableSystemAction {
+
+    private boolean isSelected;
+
+    public CutEdgesAction() {
+        putValue(AbstractAction.SMALL_ICON, new ImageIcon(ImageUtilities.loadImage(iconResource())));
+        putValue(Action.SHORT_DESCRIPTION, getDescription());
+        putValue(SELECTED_KEY, false);
+        isSelected = false;
+    }
+
+    @Override
+    public String getName() {
+        return NbBundle.getMessage(CutEdgesAction.class, "CTL_CutEdgesAction");
+    }
+
+    @Override
+    public HelpCtx getHelpCtx() {
+        return HelpCtx.DEFAULT_HELP;
+    }
+
+    @Override
+    public void performAction() {
+        isSelected = !isSelected;
+        putValue(SELECTED_KEY, isSelected);
+        EditorTopComponent editor = EditorTopComponent.getActive();
+        if (editor != null) {
+            SwingUtilities.invokeLater(() -> editor.getModel().setCutEdges(isSelected, true));
+        }
+    }
+
+    public boolean isSelected() {
+        return isSelected;
+    }
+
+    private String getDescription() {
+        return NbBundle.getMessage(CutEdgesAction.class, "HINT_CutEdgesAction");
+    }
+
+    @Override
+    protected boolean asynchronous() {
+        return false;
+    }
+
+    @Override
+    public String iconResource() {
+        return "com/sun/hotspot/igv/view/images/cut.png";
+    }
+}

src/utils/IdealGraphVisualizer/View/src/main/java/com/sun/hotspot/igv/view/actions/HideDuplicatesAction.java

@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2014, 2023, 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.view.actions;
-
-import com.sun.hotspot.igv.view.EditorTopComponent;
-import java.awt.event.ActionEvent;
-import javax.swing.AbstractAction;
-import javax.swing.Action;
-import javax.swing.ImageIcon;
-import org.openide.util.ImageUtilities;
-
-/**
- *
- * @author Tom Rodriguez
- */
-public class HideDuplicatesAction extends AbstractAction {
-
-    public HideDuplicatesAction(boolean selected) {
-        putValue(AbstractAction.SMALL_ICON, new ImageIcon(ImageUtilities.loadImage(iconResource())));
-        putValue(Action.SELECTED_KEY, selected);
-        putValue(Action.SHORT_DESCRIPTION, "Hide graphs which are the same as the previous graph");
-    }
-
-    @Override
-    public void actionPerformed(ActionEvent ev) {
-        EditorTopComponent editor = EditorTopComponent.getActive();
-        if (editor != null) {
-            boolean selected = (boolean)getValue(SELECTED_KEY);
-            editor.getModel().setHideDuplicates(selected);
-        }
-    }
-
-    protected String iconResource() {
-        return "com/sun/hotspot/igv/view/images/hideDuplicates.png";
-    }
-}