jmonkeyengine/sdk/jme3-gui/src/com/jme3/gde/gui/NiftyGuiDataObject.java

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package com.jme3.gde.gui;

import com.jme3.gde.core.assets.ProjectAssetManager;
import com.jme3.gde.gui.multiview.PreviewView;
import java.io.IOException;
import org.netbeans.api.project.Project;
import org.netbeans.api.project.ProjectManager;
import org.netbeans.modules.xml.multiview.DesignMultiViewDesc;
import org.netbeans.modules.xml.multiview.XmlMultiViewDataObject;
import org.openide.filesystems.FileObject;
import org.openide.loaders.DataNode;
import org.openide.loaders.DataObjectExistsException;
import org.openide.loaders.MultiFileLoader;
import org.openide.nodes.Node;
import org.openide.nodes.Children;
import org.openide.util.Lookup;
import org.openide.util.lookup.AbstractLookup;
import org.openide.util.lookup.InstanceContent;
import org.openide.util.lookup.ProxyLookup;

public class NiftyGuiDataObject extends XmlMultiViewDataObject {

    private static final int TYPE_TOOLBAR = 0;
    protected final Lookup lookup;
    protected final InstanceContent lookupContents = new InstanceContent();

    public NiftyGuiDataObject(FileObject pf, MultiFileLoader loader) throws DataObjectExistsException, IOException {
        super(pf, loader);
        lookup = new ProxyLookup(getCookieSet().getLookup(), new AbstractLookup(getLookupContents()));
        findAssetManager();
    }

    protected void findAssetManager() {
        FileObject file = getPrimaryFile();
        ProjectManager pm = ProjectManager.getDefault();
        while (file != null) {
            if (file.isFolder() && pm.isProject(file)) {
                try {
                    Project project = ProjectManager.getDefault().findProject(file);
                    if (project != null) {
                        ProjectAssetManager mgr = project.getLookup().lookup(ProjectAssetManager.class);
                        if (mgr != null) {
                            getLookupContents().add(mgr);
                            return;
                        }
                    }
                } catch (IOException ex) {
                } catch (IllegalArgumentException ex) {
                }
            }
            file = file.getParent();
        }
    }

    @Override
    public Lookup getLookup() {
        return lookup;
    }

    public InstanceContent getLookupContents() {
        return lookupContents;
    }

    @Override
    protected Node createNodeDelegate() {
        DataNode node = new DataNode(this, Children.LEAF, getLookup());
        node.setIconBaseWithExtension("com/jme3/gde/gui/Computer_File_043.gif");
        return node;
    }

    @Override
    protected DesignMultiViewDesc[] getMultiViewDesc() {
        if (getLookup().lookup(ProjectAssetManager.class) == null) {
            return new DesignMultiViewDesc[]{};
        } else {

            return new DesignMultiViewDesc[]{new PreviewView(this, TYPE_TOOLBAR)};
        }
    }

    @Override
    protected String getPrefixMark() {
        return "Nifty";
    }
}