/*

 * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

package com.sun.hotspot.igv.coordinator;

import com.sun.hotspot.igv.coordinator.actions.ImportAction;

import com.sun.hotspot.igv.coordinator.actions.RemoveAction;

import com.sun.hotspot.igv.coordinator.actions.RemoveAllAction;

import com.sun.hotspot.igv.coordinator.actions.SaveAllAction;

import com.sun.hotspot.igv.coordinator.actions.SaveAsAction;

import com.sun.hotspot.igv.coordinator.actions.StructuredViewAction;

import com.sun.hotspot.igv.data.GraphDocument;

import com.sun.hotspot.igv.data.ChangedListener;

import com.sun.hotspot.igv.data.Group;

import com.sun.hotspot.igv.data.services.GroupCallback;

import com.sun.hotspot.igv.data.services.GroupOrganizer;

import com.sun.hotspot.igv.data.services.GroupReceiver;

import java.awt.BorderLayout;

import java.awt.Component;

import java.io.IOException;

import java.io.ObjectInput;

import java.io.ObjectOutput;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.Collection;

import javax.swing.BoxLayout;

import javax.swing.JPanel;

import javax.swing.UIManager;

import javax.swing.border.Border;

import org.openide.ErrorManager;

import org.openide.awt.Toolbar;

import org.openide.awt.ToolbarPool;

import org.openide.explorer.ExplorerManager;

import org.openide.explorer.ExplorerUtils;

import org.openide.explorer.view.BeanTreeView;

import org.openide.util.Lookup;

import org.openide.util.LookupEvent;

import org.openide.util.LookupListener;

import org.openide.util.NbBundle;

import org.openide.util.actions.NodeAction;

import org.openide.windows.TopComponent;

import org.openide.windows.WindowManager;

/**

 *

 * @author Thomas Wuerthinger

 */

public final class OutlineTopComponent extends TopComponent implements ExplorerManager.Provider, LookupListener {

    public static OutlineTopComponent instance;

    public static final String PREFERRED_ID = "OutlineTopComponent";

    private ExplorerManager manager;

    private GraphDocument document;

    private FolderNode root;

    private GroupOrganizer organizer;

    private OutlineTopComponent() {

        initComponents();

        setName(NbBundle.getMessage(OutlineTopComponent.class, "CTL_OutlineTopComponent"));

        setToolTipText(NbBundle.getMessage(OutlineTopComponent.class, "HINT_OutlineTopComponent"));

        document = new GraphDocument();

        initListView();

        initToolbar();

        initReceivers();

    }

    private void initListView() {

        manager = new ExplorerManager();

        organizer = new StandardGroupOrganizer();

        root = new FolderNode("", organizer, new ArrayList<String>(), document.getGroups());

        manager.setRootContext(root);

        ((BeanTreeView) this.jScrollPane1).setRootVisible(false);

        document.getChangedEvent().addListener(new ChangedListener<GraphDocument>() {

            public void changed(GraphDocument document) {

                updateStructure();

            }

        });

        associateLookup(ExplorerUtils.createLookup(manager, getActionMap()));

    }

    private void initToolbar() {

        Toolbar toolbar = new Toolbar();

        Border b = (Border) UIManager.get("Nb.Editor.Toolbar.border"); //NOI18N

        toolbar.setBorder(b);

        this.add(toolbar, BorderLayout.NORTH);

        toolbar.add(ImportAction.get(ImportAction.class));

        toolbar.add(((NodeAction) RemoveAction.get(RemoveAction.class)).createContextAwareInstance(this.getLookup()));

        toolbar.add(RemoveAllAction.get(RemoveAllAction.class));

        toolbar.add(((NodeAction) SaveAsAction.get(SaveAsAction.class)).createContextAwareInstance(this.getLookup()));

        toolbar.add(SaveAllAction.get(SaveAllAction.class));

        toolbar.add(StructuredViewAction.get(StructuredViewAction.class).getToolbarPresenter());

        for (Toolbar tb : ToolbarPool.getDefault().getToolbars()) {

            tb.setVisible(false);

        }

        initOrganizers();

    }

    public void setOrganizer(GroupOrganizer organizer) {

        this.organizer = organizer;

        updateStructure();

    }

    private void initOrganizers() {

    }

    private void initReceivers() {

        final GroupCallback callback = new GroupCallback() {

            public void started(Group g) {

                getDocument().addGroup(g);

            }

        };

        Collection<? extends GroupReceiver> receivers = Lookup.getDefault().lookupAll(GroupReceiver.class);

        if (receivers.size() > 0) {

            JPanel panel = new JPanel();

            panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));

            for (GroupReceiver r : receivers) {

                Component c = r.init(callback);

                panel.add(c);

            }

            jPanel2.add(panel, BorderLayout.PAGE_START);

        }

    }

    private void updateStructure() {

        root.init("", organizer, new ArrayList<String>(), document.getGroups());

    }

    public void clear() {

        document.clear();

    }

    public ExplorerManager getExplorerManager() {

        return manager;

    }

    public GraphDocument getDocument() {

        return document;

    }

    /**

     * Gets default instance. Do not use directly: reserved for *.settings files only,

     * i.e. deserialization routines; otherwise you could get a non-deserialized instance.

     * To obtain the singleton instance, use {@link findInstance}.

     */

    public static synchronized OutlineTopComponent getDefault() {

        if (instance == null) {

            instance = new OutlineTopComponent();

        }

        return instance;

    }

    /**

     * Obtain the OutlineTopComponent instance. Never call {@link #getDefault} directly!

     */

    public static synchronized OutlineTopComponent findInstance() {

        TopComponent win = WindowManager.getDefault().findTopComponent(PREFERRED_ID);

        if (win == null) {

            ErrorManager.getDefault().log(ErrorManager.WARNING, "Cannot find Outline component. It will not be located properly in the window system.");

            return getDefault();

        }

        if (win instanceof OutlineTopComponent) {

            return (OutlineTopComponent) win;

        }

        ErrorManager.getDefault().log(ErrorManager.WARNING, "There seem to be multiple components with the '" + PREFERRED_ID + "' ID. That is a potential source of errors and unexpected behavior.");

        return getDefault();

    }

    @Override

    public int getPersistenceType() {

        return TopComponent.PERSISTENCE_ALWAYS;

    }

    @Override

    public void componentOpened() {

        this.requestActive();

    }

    @Override

    public void componentClosed() {

    }

    @Override

    protected String preferredID() {

        return PREFERRED_ID;

    }

    public void resultChanged(LookupEvent lookupEvent) {

    }

    @Override

    public void readExternal(ObjectInput objectInput) throws IOException, ClassNotFoundException {

        // Not called when user starts application for the first time

        super.readExternal(objectInput);

        ((BeanTreeView) this.jScrollPane1).setRootVisible(false);

    }

    @Override

    public void writeExternal(ObjectOutput objectOutput) throws IOException {

        super.writeExternal(objectOutput);

    }

    static final class ResolvableHelper implements Serializable {

        private static final long serialVersionUID = 1L;

        public Object readResolve() {

            return OutlineTopComponent.getDefault();

        }

    }

    /** This method is called from within the constructor to

     * initialize the form.

     * WARNING: Do NOT modify this code. The content of this method is

     * always regenerated by the Form Editor.

     */

    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents

    private void initComponents() {

        jPanel2 = new javax.swing.JPanel();

        jScrollPane1 = new BeanTreeView();

        setLayout(new java.awt.BorderLayout());

        jPanel2.setLayout(new java.awt.BorderLayout());

        jPanel2.add(jScrollPane1, java.awt.BorderLayout.CENTER);

        add(jPanel2, java.awt.BorderLayout.CENTER);

    }// </editor-fold>//GEN-END:initComponents

    // Variables declaration - do not modify//GEN-BEGIN:variables

    private javax.swing.JPanel jPanel2;

    private javax.swing.JScrollPane jScrollPane1;

    // End of variables declaration//GEN-END:variables

}