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Java example source code file (DiagramViewModel.java)

This example Java source code file (DiagramViewModel.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, awt, changedevent, changedlistener, color, diagramviewmodel, filterchain, group, hashset, inputgraph, inputnode, integer, override, set, string, util

The DiagramViewModel.java Java example source code

/*
 * Copyright (c) 1998, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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;

import com.sun.hotspot.igv.data.Group;
import com.sun.hotspot.igv.data.InputGraph;
import com.sun.hotspot.igv.data.InputNode;
import com.sun.hotspot.igv.difference.Difference;
import com.sun.hotspot.igv.filter.FilterChain;
import com.sun.hotspot.igv.graph.Diagram;
import com.sun.hotspot.igv.data.ChangedEvent;
import com.sun.hotspot.igv.util.RangeSliderModel;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.sun.hotspot.igv.data.ChangedListener;
import com.sun.hotspot.igv.settings.Settings;
import java.awt.Color;

/**
 *
 * @author Thomas Wuerthinger
 */
public class DiagramViewModel extends RangeSliderModel implements ChangedListener<RangeSliderModel> {

    // Warning: Update setData method if fields are added
    private Group group;
    private Set<Integer> hiddenNodes;
    private Set<Integer> onScreenNodes;
    private Set<Integer> selectedNodes;
    private FilterChain filterChain;
    private FilterChain sequenceFilterChain;
    private Diagram diagram;
    private ChangedEvent<DiagramViewModel> groupChangedEvent;
    private ChangedEvent<DiagramViewModel> diagramChangedEvent;
    private ChangedEvent<DiagramViewModel> viewChangedEvent;
    private ChangedEvent<DiagramViewModel> viewPropertiesChangedEvent;
    private boolean showBlocks;
    private boolean showNodeHull;
    private ChangedListener<FilterChain> filterChainChangedListener = new ChangedListener() {

        public void changed(FilterChain source) {
            diagramChanged();
        }
    };

    @Override
    public DiagramViewModel copy() {
        DiagramViewModel result = new DiagramViewModel(group, filterChain, sequenceFilterChain);
        result.setData(this);
        return result;
    }

    public void setData(DiagramViewModel newModel) {
        super.setData(newModel);
        boolean diagramChanged = false;
        boolean viewChanged = false;
        boolean viewPropertiesChanged = false;

        boolean groupChanged = (group == newModel.group);
        this.group = newModel.group;
        diagramChanged |= (filterChain != newModel.filterChain);
        this.filterChain = newModel.filterChain;
        diagramChanged |= (sequenceFilterChain != newModel.sequenceFilterChain);
        this.sequenceFilterChain = newModel.sequenceFilterChain;
        diagramChanged |= (diagram != newModel.diagram);
        this.diagram = newModel.diagram;
        viewChanged |= (hiddenNodes != newModel.hiddenNodes);
        this.hiddenNodes = newModel.hiddenNodes;
        viewChanged |= (onScreenNodes != newModel.onScreenNodes);
        this.onScreenNodes = newModel.onScreenNodes;
        viewChanged |= (selectedNodes != newModel.selectedNodes);
        this.selectedNodes = newModel.selectedNodes;
        viewPropertiesChanged |= (showBlocks != newModel.showBlocks);
        this.showBlocks = newModel.showBlocks;
        viewPropertiesChanged |= (showNodeHull != newModel.showNodeHull);
        this.showNodeHull = newModel.showNodeHull;

        if(groupChanged) {
            groupChangedEvent.fire();
        }

        if (diagramChanged) {
            diagramChangedEvent.fire();
        }
        if (viewPropertiesChanged) {
            viewPropertiesChangedEvent.fire();
        }
        if (viewChanged) {
            viewChangedEvent.fire();
        }
    }

    public boolean getShowBlocks() {
        return showBlocks;
    }

    public void setShowBlocks(boolean b) {
        showBlocks = b;
        viewPropertiesChangedEvent.fire();
    }

    public boolean getShowNodeHull() {
        return showNodeHull;
    }

    public void setShowNodeHull(boolean b) {
        showNodeHull = b;
        viewPropertiesChangedEvent.fire();
    }

    public DiagramViewModel(Group g, FilterChain filterChain, FilterChain sequenceFilterChain) {
        super(calculateStringList(g));

        this.showNodeHull = true;
        this.showBlocks = true;
        this.group = g;
        assert filterChain != null;
        this.filterChain = filterChain;
        assert sequenceFilterChain != null;
        this.sequenceFilterChain = sequenceFilterChain;
        hiddenNodes = new HashSet<Integer>();
        onScreenNodes = new HashSet<Integer>();
        selectedNodes = new HashSet<Integer>();
        super.getChangedEvent().addListener(this);
        diagramChangedEvent = new ChangedEvent<DiagramViewModel>(this);
        viewChangedEvent = new ChangedEvent<DiagramViewModel>(this);
        viewPropertiesChangedEvent = new ChangedEvent<DiagramViewModel>(this);
        groupChangedEvent = new ChangedEvent<DiagramViewModel>(this);
        groupChangedEvent.addListener(groupChangedListener);
        groupChangedEvent.fire();

        filterChain.getChangedEvent().addListener(filterChainChangedListener);
        sequenceFilterChain.getChangedEvent().addListener(filterChainChangedListener);
    }

    private final ChangedListener<DiagramViewModel> groupChangedListener = new ChangedListener() {

        private Group oldGroup;

        public void changed(DiagramViewModel source) {
            if(oldGroup != null) {
                oldGroup.getChangedEvent().removeListener(groupContentChangedListener);
            }
            group.getChangedEvent().addListener(groupContentChangedListener);
            oldGroup = group;
        }
    };


    private final ChangedListener<Group> groupContentChangedListener = new ChangedListener() {

        public void changed(Group source) {
            assert source == group;
            setPositions(calculateStringList(source));
            setSelectedNodes(selectedNodes);
        }

    };

    public ChangedEvent<DiagramViewModel> getDiagramChangedEvent() {
        return diagramChangedEvent;
    }

    public ChangedEvent<DiagramViewModel> getViewChangedEvent() {
        return viewChangedEvent;
    }

    public ChangedEvent<DiagramViewModel> getViewPropertiesChangedEvent() {
        return viewPropertiesChangedEvent;
    }

    public Set<Integer> getSelectedNodes() {
        return Collections.unmodifiableSet(selectedNodes);
    }

    public Set<Integer> getHiddenNodes() {
        return Collections.unmodifiableSet(hiddenNodes);
    }

    public Set<Integer> getOnScreenNodes() {
        return Collections.unmodifiableSet(onScreenNodes);
    }

    public void setSelectedNodes(Set<Integer> nodes) {
        this.selectedNodes = nodes;
        List<Color> colors = new ArrayList();
        for (String s : getPositions()) {
            colors.add(Color.black);
        }
        if (nodes.size() >= 1) {
            for (Integer id : nodes) {
                if (id < 0) {
                    id = -id;
                }
                InputNode last = null;
                int index = 0;
                for (InputGraph g : group.getGraphs()) {
                    Color curColor = colors.get(index);
                    InputNode cur = g.getNode(id);
                    if (cur != null) {
                        if (last == null) {
                            curColor = Color.green;
                        } else {
                            if (last.equals(cur)) {
                                if (curColor == Color.black) {
                                    curColor = Color.white;
                                }
                            } else {
                                if (curColor != Color.green) {
                                    curColor = Color.orange;
                                }
                            }
                        }
                    }
                    last = cur;
                    colors.set(index, curColor);
                    index++;
                }
            }
            this.setColors(colors);
        }
        setColors(colors);
        viewChangedEvent.fire();
    }

    public void setHiddenNodes(Set<Integer> nodes) {
        this.hiddenNodes = nodes;
        viewChangedEvent.fire();
    }

    public void setOnScreenNodes(Set<Integer> onScreenNodes) {
        this.onScreenNodes = onScreenNodes;
        viewChangedEvent.fire();
    }

    public FilterChain getSequenceFilterChain() {
        return filterChain;
    }

    public void setSequenceFilterChain(FilterChain chain) {
        assert chain != null : "sequenceFilterChain must never be null";
        sequenceFilterChain.getChangedEvent().removeListener(filterChainChangedListener);
        sequenceFilterChain = chain;
        sequenceFilterChain.getChangedEvent().addListener(filterChainChangedListener);
        diagramChanged();
    }

    private void diagramChanged() {
        // clear diagram
        diagram = null;
        getDiagramChangedEvent().fire();

    }

    public FilterChain getFilterChain() {
        return filterChain;
    }

    public void setFilterChain(FilterChain chain) {
        assert chain != null : "filterChain must never be null";
        filterChain.getChangedEvent().removeListener(filterChainChangedListener);
        filterChain = chain;
        filterChain.getChangedEvent().addListener(filterChainChangedListener);
        diagramChanged();
    }

    private static List<String> calculateStringList(Group g) {
        List<String> result = new ArrayList();
        for (InputGraph graph : g.getGraphs()) {
            result.add(graph.getName());
        }
        return result;
    }

    public InputGraph getFirstGraph() {
        return group.getGraphs().get(getFirstPosition());
    }

    public InputGraph getSecondGraph() {
        List<InputGraph> graphs = group.getGraphs();
        if (graphs.size() >= getSecondPosition())
            return group.getGraphs().get(getSecondPosition());
        return getFirstGraph();
    }

    public void selectGraph(InputGraph g) {
        int index = group.getGraphs().indexOf(g);
        assert index != -1;
        setPositions(index, index);
    }

    public Diagram getDiagramToView() {

        if (diagram == null) {
            diagram = Diagram.createDiagram(getGraphToView(), Settings.get().get(Settings.NODE_TEXT, Settings.NODE_TEXT_DEFAULT));
            getFilterChain().apply(diagram, getSequenceFilterChain());
        }

        return diagram;
    }

    public InputGraph getGraphToView() {
        if (getFirstGraph() != getSecondGraph()) {
            InputGraph inputGraph = Difference.createDiffGraph(getSecondGraph(), getFirstGraph());
            return inputGraph;
        } else {
            InputGraph inputGraph = getFirstGraph();
            return inputGraph;
        }
    }

    public void changed(RangeSliderModel source) {
        diagramChanged();
    }
}

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