Examples with Tree ini.trakem2.display.Tree used on opensource projects

Example 21 with Tree

use of ini.trakem2.display.Tree in project TrakEM2 by trakem2.

the class Project method openFSProject.

/**
 * Opens a project from an .xml file. If the path is null it'll be asked for.
 *  Only one project may be opened at a time.
 */
@SuppressWarnings("unchecked")
public static synchronized Project openFSProject(final String path, final boolean open_displays) {
    if (Utils.wrongImageJVersion())
        return null;
    final FSLoader loader = new FSLoader();
    final Object[] data = loader.openFSProject(path, open_displays);
    if (null == data) {
        loader.destroy();
        return null;
    }
    final TemplateThing root_tt = (TemplateThing) data[0];
    final ProjectThing root_pt = (ProjectThing) data[1];
    final LayerThing root_lt = (LayerThing) data[2];
    final HashMap<ProjectThing, Boolean> ht_pt_expanded = (HashMap<ProjectThing, Boolean>) data[3];
    final Project project = (Project) root_pt.getObject();
    project.createLayerTemplates();
    project.template_tree = new TemplateTree(project, root_tt);
    project.root_tt = root_tt;
    project.root_pt = root_pt;
    project.project_tree = new ProjectTree(project, project.root_pt);
    project.layer_tree = new LayerTree(project, root_lt);
    project.root_lt = root_lt;
    project.layer_set = (LayerSet) root_lt.getObject();
    // if all when well, register as open:
    al_open_projects.add(project);
    // create the project control window, containing the trees in a double JSplitPane
    ControlWindow.add(project, project.template_tree, project.project_tree, project.layer_tree);
    // set ProjectThing nodes expanded state, now that the trees exist
    try {
        java.lang.reflect.Field f = JTree.class.getDeclaredField("expandedState");
        f.setAccessible(true);
        Hashtable<Object, Object> ht_exp = (Hashtable<Object, Object>) f.get(project.project_tree);
        for (Map.Entry<ProjectThing, Boolean> entry : ht_pt_expanded.entrySet()) {
            ProjectThing pt = entry.getKey();
            Boolean expanded = entry.getValue();
            // project.project_tree.expandPath(new TreePath(project.project_tree.findNode(pt, project.project_tree).getPath()));
            // WARNING the above is wrong in that it will expand the whole thing, not just set the state of the node!!
            // So the ONLY way to do it is to start from the child-most leafs of the tree, and apply the expanding to them upward. This is RIDICULOUS, how can it be so broken
            // so, hackerous:
            DefaultMutableTreeNode nd = DNDTree.findNode(pt, project.project_tree);
            // else Utils.log2("path: " + new TreePath(nd.getPath()));
            if (null == nd) {
                Utils.log2("Can't find node for " + pt);
            } else {
                ht_exp.put(new TreePath(nd.getPath()), expanded);
            }
        }
        // very important!!
        project.project_tree.updateUILater();
    } catch (Exception e) {
        IJError.print(e);
    }
    // open any stored displays
    if (open_displays) {
        final Bureaucrat burro = Display.openLater();
        if (null != burro) {
            final Runnable ru = new Runnable() {

                public void run() {
                    // wait until the Bureaucrat finishes
                    try {
                        burro.join();
                    } catch (InterruptedException ie) {
                    }
                    // restore to non-changes (crude, but works)
                    project.loader.setChanged(false);
                    Utils.log2("C set to false");
                }
            };
            new Thread() {

                public void run() {
                    setPriority(Thread.NORM_PRIORITY);
                    // avoiding "can't call invokeAndWait from the EventDispatch thread" error
                    try {
                        javax.swing.SwingUtilities.invokeAndWait(ru);
                    } catch (Exception e) {
                        Utils.log2("ERROR: " + e);
                    }
                }
            }.start();
            // SO: WAIT TILL THE END OF TIME!
            new Thread() {

                public void run() {
                    try {
                        // ah, the pain in my veins. I can't take this shitty setup anymore.
                        Thread.sleep(4000);
                        javax.swing.SwingUtilities.invokeAndWait(new Runnable() {

                            public void run() {
                                project.getLoader().setChanged(false);
                                Utils.log2("D set to false");
                            }
                        });
                        // repainting to fix gross errors in tree rendering
                        project.getTemplateTree().updateUILater();
                        // idem
                        project.getProjectTree().updateUILater();
                    } catch (Exception ie) {
                    }
                }
            }.start();
        } else {
            // help the helpless users
            Display.createDisplay(project, project.layer_set.getLayer(0));
        }
    }
    project.restartAutosaving();
    return project;
}

Example 22 with Tree

use of ini.trakem2.display.Tree in project TrakEM2 by trakem2.

the class Project method getMeaningfulTitle.

/**
 * Searches upstream in the Project tree for things that have a user-defined name, stops at the first and returns it along with all the intermediate ones that only have a type and not a title, appended.
 */
public String getMeaningfulTitle(final Displayable d) {
    ProjectThing thing = findProjectThing(d);
    // happens if there is no associated node
    if (null == thing)
        return d.getTitle();
    String title = new StringBuilder(!thing.getType().equals(d.getTitle()) ? d.getTitle() + " [" : "[").append(thing.getType()).append(' ').append('#').append(d.getId()).append(']').toString();
    if (!thing.getType().equals(d.getTitle())) {
        return title;
    }
    ProjectThing parent = (ProjectThing) thing.getParent();
    StringBuilder sb = new StringBuilder(title);
    while (null != parent) {
        Object ob = parent.getObject();
        if (ob.getClass() == Project.class)
            break;
        String type = parent.getType();
        if (!ob.equals(type)) {
            // meaning, something else was typed in as a title
            sb.insert(0, new StringBuilder(ob.toString()).append(' ').append('[').append(type).append(']').append('/').toString());
            // title =  ob.toString() + " [" + type + "]/" + title;
            break;
        }
        sb.insert(0, '/');
        sb.insert(0, type);
        // title = type + "/" + title;
        parent = (ProjectThing) parent.getParent();
    }
    // return title;
    return sb.toString();
}

Example 23 with Tree

use of ini.trakem2.display.Tree in project TrakEM2 by trakem2.

the class ProjectTiler method createRetiledSibling.

/**
 * Take a {@link Project}, a size for the image tiles, and a target directory,
 * and create a new copy of the current project in that folder but with the underlying
 * images converted to tiles with a translation-only transform (saved as zipped TIFFs,
 * with extension ".tif.zip").
 * The new, returned {@link Project} represents the given project but with much
 * simpler transformations (just translation) for the images and a defined size for
 * the latter, which helps a lot regarding storage space of the XML (and parsing and
 * saving time) and performance when browsing layers (keep in mind that, for a 32k x 32k image,
 * at 100% zoom one would have to load a 32k x 32k image and render just a tiny bit
 * of it). The copied Project preserves the ID of the {@link Layer}s of the original
 * {@link Project}, as well as the dimensions; this means the copy is a sibling of
 * the original, and it is possible to send segmentations from one to the other "as is"
 * (directly, without having to transform along with the images which would not be possible).
 *
 * Image files are stored as
 *
 * The non-image objects of the given project are copied into the new project as well.
 *
 * @param srcProject The project to create a sibling of.
 * @param targetDirectory The directory in which to create all the necessary data and mipmap folders for the new Project.
 * @param tileWidth The width of the tiles to create for the data of the new project.
 * @param tileHeight The height of the tiles.
 * @param exportImageType Any of {@link ImagePlus#GRAY8}, {@link ImagePlus#GRAY16} or {@link ImagePlus#COLOR_RGB}, otherwise an {@link IllegalArgumentException} is thrown.
 * @param onlyVisibleImages Whether to consider visible images only.
 * @param nExportThreads Number of layers to export in parallel. Use a small number when original images are huge (such as larger than 4096 x 4096 pixels).
 * @param createMipMaps Whether to generate the mipmaps when done or not.
 *
 * @throws Exception IllegalArgumentException When {@code exportImageType} is not {@link ImagePlus#GRAY16} or {@link ImagePlus#COLOR_RGB}, or when the directory exists and cannot be written to.
 */
public static final Project createRetiledSibling(final Project srcProject, final String targetDirectory, final int tileWidth, final int tileHeight, final int exportImageType, final boolean onlyVisibleImages, final int nExportThreads, final boolean createMipMaps) throws Exception {
    // Validate exportImageType
    switch(exportImageType) {
        case ImagePlus.GRAY8:
        case ImagePlus.GRAY16:
        case ImagePlus.COLOR_RGB:
            break;
        default:
            throw new IllegalArgumentException("Can only accept GRAY8, GRAY16 or COLOR_RGB as values for 'exportImageType'!");
    }
    // Validate targetDirectory
    final File fdir = new File(targetDirectory);
    if (fdir.exists()) {
        if (!fdir.isDirectory() || !fdir.canWrite())
            throw new IllegalArgumentException("Invalid directory: not a directory or cannot write to: " + targetDirectory);
    } else {
        if (!fdir.mkdirs()) {
            throw new IllegalArgumentException("Cannot create directory at: " + targetDirectory);
        }
    }
    final String targetDir = Utils.fixDir(targetDirectory);
    // Create "data" directory
    final String dataDir = new StringBuilder(targetDir).append("data/").toString();
    final File fDataDir = new File(dataDir);
    if (fDataDir.exists() && (!fDataDir.isDirectory() || !fDataDir.canWrite())) {
        throw new IllegalArgumentException("Cannot create or write to 'data' directory in the targetDirectory at: " + targetDir);
    } else {
        fDataDir.mkdir();
    }
    // Create new Project, plain, without any automatic creation of a Layer or a Display
    final Project newProject = Project.newFSProject("blank", null, targetDir, false);
    final LayerSet newLayerSet = newProject.getRootLayerSet();
    newLayerSet.setCalibration(srcProject.getRootLayerSet().getCalibrationCopy());
    if (!createMipMaps) {
        Utils.log("MipMaps are DISABLED:\n --> When done, right-click and choose 'Display - Properties...' and enable mipmaps,\n     and then run 'Project - Regenerate all mipmaps'\n");
        newProject.getLoader().setMipMapsRegeneration(false);
        Utils.log("mipmaps enabled? " + newProject.getLoader().isMipMapsRegenerationEnabled());
    }
    // Copy the Template Tree of types
    newProject.resetRootTemplateThing(srcProject.getRootTemplateThing().clone(newProject, true), null);
    for (final TemplateThing tt : newProject.getRootTemplateThing().getUniqueTypes(new HashMap<String, TemplateThing>()).values()) {
        newProject.addUniqueType(tt);
    }
    // Clone layers with the exact same IDs, so that the two projects are siblings at the layer-level:
    // (Being siblings allows for treelines, arealists, etc. to be transferred from one to another "as is").
    final List<Layer> srcLayers = srcProject.getRootLayerSet().getLayers();
    final List<Layer> newLayers = new ArrayList<Layer>();
    for (final Layer srcLayer : srcLayers) {
        final Layer newLayer = new Layer(newProject, srcLayer.getId(), srcLayer.getZ(), srcLayer.getThickness());
        // to update the ID generator in FSLoader
        newLayer.addToDatabase();
        newLayerSet.add(newLayer);
        newLayers.add(newLayer);
        newProject.getRootLayerThing().addChild(new LayerThing(newProject.getRootLayerThing().getChildTemplate("layer"), newProject, newLayer));
    }
    newProject.getLayerTree().rebuild();
    // Update the LayerSet
    newLayerSet.setDimensions(srcProject.getRootLayerSet().getLayerWidth(), srcProject.getRootLayerSet().getLayerHeight(), LayerSet.NORTHWEST);
    Display.updateLayerScroller(newLayerSet);
    Display.update(newLayerSet);
    // Copy template from the src Project
    // (It's done after creating layers so the IDs will not collide with those of the Layers)
    newProject.resetRootTemplateThing(srcProject.getRootTemplateThing().clone(newProject, false), null);
    // Export tiles as new Patch instances, creating new image files in disk
    final int numThreads = Math.max(1, Math.min(nExportThreads, Runtime.getRuntime().availableProcessors()));
    int i = 0;
    for (final Layer srcLayer : srcLayers) {
        Utils.log("Processing layer " + (i + 1) + "/" + srcLayers.size() + " -- " + new Date());
        final int layerIndex = i++;
        // Create subDirectory
        final String dir = dataDir + "/" + layerIndex + "/";
        new File(dir).mkdir();
        // Create a new Layer with the same Z and thickness
        final Layer newLayer = newLayers.get(layerIndex);
        // Export layer tiles
        final ArrayList<Patch> patches = new ArrayList<Patch>();
        if (ImagePlus.GRAY16 == exportImageType) {
            Process.progressive(ExportUnsignedShort.exportTiles(srcLayer, tileWidth, tileHeight, onlyVisibleImages), new CountingTaskFactory<Callable<ExportedTile>, Patch>() {

                public Patch process(final Callable<ExportedTile> c, final int index) {
                    try {
                        // Create the tile
                        final ExportedTile t = c.call();
                        // Store the file
                        final String title = layerIndex + "-" + index;
                        final String path = dir + title + ".tif.zip";
                        final ImagePlus imp = new ImagePlus(title, t.sp);
                        if (!new FileSaver(imp).saveAsZip(path)) {
                            throw new Exception("Could not save tile: " + path);
                        }
                        // Create a Patch
                        final Patch patch = new Patch(newProject, title, t.x, t.y, imp);
                        patch.setLocked(true);
                        newProject.getLoader().addedPatchFrom(path, patch);
                        return patch;
                    } catch (Exception e) {
                        IJError.print(e);
                        return null;
                    }
                }
            }, patches, numThreads);
        } else {
            // GRAY8 or COLOR_RGB: created from mipmaps
            Process.progressive(tileSequence(srcLayer, tileWidth, tileHeight, onlyVisibleImages), new CountingTaskFactory<Rectangle, Patch>() {

                @Override
                public Patch process(final Rectangle bounds, final int index) {
                    try {
                        // Create the tile
                        final ImagePlus imp = srcLayer.getProject().getLoader().getFlatImage(srcLayer, bounds, 1.0, -1, exportImageType, Patch.class, null, false, Color.black);
                        final String title = layerIndex + "-" + index;
                        imp.setTitle(title);
                        final String path = dir + title + ".tif.zip";
                        if (!new FileSaver(imp).saveAsZip(path)) {
                            throw new Exception("Could not save tile: " + path);
                        }
                        // Create a Patch
                        final Patch patch = new Patch(newProject, title, bounds.x, bounds.y, imp);
                        patch.setLocked(true);
                        newProject.getLoader().addedPatchFrom(path, patch);
                        return patch;
                    } catch (Exception e) {
                        IJError.print(e);
                        return null;
                    }
                }
            }, patches, numThreads);
        }
        // Add all Patches to the new Layer
        for (final Patch p : patches) {
            newLayer.add(p);
        }
    }
    // Copy all segmentations "As is"
    final ProjectThing root = srcProject.getRootProjectThing();
    if (null != root.getChildren() && !root.getChildren().isEmpty()) {
        final ProjectThing source_pt = srcProject.getRootProjectThing().getChildren().get(0);
        // "As is"
        final int transfer_mode = 0;
        final ProjectThing landing_parent = newProject.getRootProjectThing();
        srcProject.getProjectTree().rawSendToSiblingProject(source_pt, transfer_mode, newProject, landing_parent);
    }
    // Copy all floating text labels
    i = 0;
    for (final Layer srcLayer : srcLayers) {
        for (final DLabel srcLabel : srcLayer.getAll(DLabel.class)) {
            newLayers.get(i++).add(srcLabel.clone(newProject, false));
        }
    }
    if (createMipMaps) {
        final LinkedList<Future<?>> fus = new LinkedList<Future<?>>();
        final int batch = Runtime.getRuntime().availableProcessors();
        for (final Layer newLayer : newLayers) {
            for (final Patch p : newLayer.getAll(Patch.class)) {
                fus.add(p.updateMipMaps());
                // Don't build-up too much
                if (fus.size() > batch * 3) {
                    while (fus.size() > batch) {
                        try {
                            fus.removeFirst().get();
                        } catch (Exception e) {
                            IJError.print(e);
                        }
                    }
                }
            }
        }
        Utils.wait(fus);
    }
    // Save:
    newProject.saveAs(targetDir + "exported.xml", false);
    return newProject;
}

Example 24 with Tree

use of ini.trakem2.display.Tree in project TrakEM2 by trakem2.

the class LayerTree method addLayer.

/**
 * Used by the Loader.importStack and the "many new layers" command.
 */
public void addLayer(LayerSet layer_set, Layer layer) {
    if (null == layer_set || null == layer)
        return;
    try {
        // find the node that contains the LayerSet
        DefaultMutableTreeNode root_node = (DefaultMutableTreeNode) this.getModel().getRoot();
        LayerThing root_lt = (LayerThing) root_node.getUserObject();
        Thing thing = null;
        if (root_lt.getObject().equals(layer_set))
            thing = root_lt;
        else
            thing = root_lt.findChild(layer_set);
        DefaultMutableTreeNode parent_node = DNDTree.findNode(thing, this);
        if (null == parent_node) {
            Utils.log("LayerTree: LayerSet not found.");
            return;
        }
        LayerThing parent_thing = (LayerThing) parent_node.getUserObject();
        double z = layer.getZ();
        // find the node whose 'z' is larger than z, and add the Layer before that.
        int n = parent_node.getChildCount();
        int i = 0;
        for (; i < n; i++) {
            DefaultMutableTreeNode child_node = (DefaultMutableTreeNode) parent_node.getChildAt(i);
            LayerThing child_thing = (LayerThing) child_node.getUserObject();
            if (!child_thing.getType().equals("layer")) {
                continue;
            }
            double iz = ((Layer) child_thing.getObject()).getZ();
            if (iz < z) {
                continue;
            }
            // else, add the layer here, after the 'i' layer which has a larger z
            break;
        }
        TemplateThing tt = parent_thing.getChildTemplate("layer");
        if (null == tt) {
            Utils.log("LayerTree: Null template Thing!");
            return;
        }
        LayerThing new_thing = new LayerThing(tt, layer.getProject(), layer);
        // Add the new_thing to the tree
        if (null != new_thing) {
            parent_thing.addChild(new_thing);
            DefaultMutableTreeNode new_node = new DefaultMutableTreeNode(new_thing);
            // TODO when changing the Z of a layer, the insertion is proper but an empty space is left //Utils.log("LayerTree: inserting at: " + i);
            ((DefaultTreeModel) this.getModel()).insertNodeInto(new_node, parent_node, i);
            TreePath treePath = new TreePath(new_node.getPath());
            this.scrollPathToVisible(treePath);
            this.setSelectionPath(treePath);
        }
    } catch (Exception e) {
        IJError.print(e);
    }
}

Example 25 with Tree

use of ini.trakem2.display.Tree in project TrakEM2 by trakem2.

the class LayerTree method actionPerformed.

public void actionPerformed(ActionEvent ae) {
    try {
        String command = ae.getActionCommand();
        // commands for multiple selections:
        TreePath[] paths = this.getSelectionPaths();
        if (null != paths && paths.length > 1) {
            if (command.equals("Reverse layer Z coords")) {
                // check that all layers belong to the same layer set
                // just do it
                Layer[] layer = new Layer[paths.length];
                LayerSet ls = null;
                for (int i = 0; i < paths.length; i++) {
                    layer[i] = (Layer) ((LayerThing) ((DefaultMutableTreeNode) paths[i].getLastPathComponent()).getUserObject()).getObject();
                    if (null == ls)
                        ls = layer[i].getParent();
                    else if (!ls.equals(layer[i].getParent())) {
                        Utils.showMessage("To reverse, all layers must belong to the same layer set");
                        return;
                    }
                }
                final ArrayList<Layer> al = new ArrayList<Layer>();
                for (int i = 0; i < layer.length; i++) al.add(layer[i]);
                ls.addLayerEditedStep(al);
                // ASSSUMING layers are already Z ordered! CHECK
                for (int i = 0, j = layer.length - 1; i < layer.length / 2; i++, j--) {
                    double z = layer[i].getZ();
                    layer[i].setZ(layer[j].getZ());
                    layer[j].setZ(z);
                }
                updateList(ls);
                ls.addLayerEditedStep(al);
                Display.updateLayerScroller(ls);
            } else if (command.equals("Translate layers in Z...")) {
                GenericDialog gd = ControlWindow.makeGenericDialog("Range");
                gd.addMessage("Translate selected range in the Z axis:");
                gd.addNumericField("by: ", 0, 4);
                gd.showDialog();
                if (gd.wasCanceled())
                    return;
                // else, displace
                double dz = gd.getNextNumber();
                if (Double.isNaN(dz)) {
                    Utils.showMessage("Invalid number");
                    return;
                }
                HashSet<LayerSet> hs_parents = new HashSet<LayerSet>();
                for (int i = 0; i < paths.length; i++) {
                    Layer layer = (Layer) ((LayerThing) ((DefaultMutableTreeNode) paths[i].getLastPathComponent()).getUserObject()).getObject();
                    layer.setZ(layer.getZ() + dz);
                    hs_parents.add(layer.getParent());
                }
                for (LayerSet ls : hs_parents) {
                    updateList(ls);
                }
                // now update all profile's Z ordering in the ProjectTree
                ProjectThing root_pt = project.getRootProjectThing();
                for (final ProjectThing pt : root_pt.findChildrenOfType("profile_list")) {
                    pt.fixZOrdering();
                    project.getProjectTree().updateList(pt);
                }
                project.getProjectTree().updateUILater();
            // Display.updateLayerScroller((LayerSet)((DefaultMutableTreeNode)getModel().getRoot()).getUserObject());
            } else if (command.equals("Delete...")) {
                if (!Utils.check("Really remove all selected layers?"))
                    return;
                for (int i = 0; i < paths.length; i++) {
                    DefaultMutableTreeNode lnode = (DefaultMutableTreeNode) paths[i].getLastPathComponent();
                    LayerThing lt = (LayerThing) lnode.getUserObject();
                    Layer layer = (Layer) lt.getObject();
                    if (!layer.remove(false)) {
                        Utils.showMessage("Could not delete layer " + layer);
                        this.updateUILater();
                        return;
                    }
                    if (lt.remove(false)) {
                        ((DefaultTreeModel) this.getModel()).removeNodeFromParent(lnode);
                    }
                }
                this.updateUILater();
            } else if (command.equals("Scale Z and thickness...")) {
                GenericDialog gd = new GenericDialog("Scale Z");
                gd.addNumericField("scale: ", 1.0, 2);
                gd.showDialog();
                double scale = gd.getNextNumber();
                if (Double.isNaN(scale) || 0 == scale) {
                    Utils.showMessage("Imvalid scaling factor: " + scale);
                    return;
                }
                for (int i = 0; i < paths.length; i++) {
                    DefaultMutableTreeNode lnode = (DefaultMutableTreeNode) paths[i].getLastPathComponent();
                    LayerThing lt = (LayerThing) lnode.getUserObject();
                    Layer layer = (Layer) lt.getObject();
                    layer.setZ(layer.getZ() * scale);
                    layer.setThickness(layer.getThickness() * scale);
                }
                this.updateUILater();
            } else {
                Utils.showMessage("Don't know what to do with command " + command + " for multiple selected nodes");
            }
            return;
        }
        // commands for single selection:
        if (null == selected_node)
            return;
        LayerThing thing = (LayerThing) selected_node.getUserObject();
        LayerThing new_thing = null;
        TemplateThing tt = null;
        Object ob = null;
        int i_position = -1;
        if (command.startsWith("new ")) {
            String name = command.substring(4).toLowerCase();
            if (name.equals("layer")) {
                // Create new Layer and add it to the selected node
                LayerSet set = (LayerSet) thing.getObject();
                Layer new_layer = Layer.create(thing.getProject(), set);
                if (null == new_layer)
                    return;
                tt = thing.getChildTemplate("layer");
                ob = new_layer;
                Display.updateTitle(set);
            } else if (name.equals("layer set")) {
                // with space in the middle
                // Create a new LayerSet and add it in the middle
                Layer layer = (Layer) thing.getObject();
                LayerSet new_set = layer.getParent().create(layer);
                if (null == new_set)
                    return;
                layer.add(new_set);
                // add it at the end of the list
                // with space, not underscore
                tt = thing.getChildTemplate("layer set");
                ob = new_set;
                i_position = selected_node.getChildCount();
                Display.update(layer);
            } else {
                Utils.log("LayerTree.actionPerformed: don't know what to do with the command: " + command);
                return;
            }
        } else if (command.equals("many new layers...")) {
            LayerSet set = (LayerSet) thing.getObject();
            List<Layer> layers = Layer.createMany(set.getProject(), set);
            // add them to the tree as LayerThing
            if (null == layers)
                return;
            for (Layer la : layers) {
                // null layers will be skipped
                addLayer(set, la);
            }
            Display.updateTitle(set);
            return;
        } else if (command.equals("Show")) {
            // create a new Display
            DBObject dbo = (DBObject) thing.getObject();
            // the top level LayerSet
            if (thing.getType().equals("layer_set") && null == ((LayerSet) dbo).getParent())
                return;
            Display.createDisplay(dbo.getProject(), thing.getType().equals("layer") ? (Layer) dbo : ((LayerSet) dbo).getParent());
            return;
        } else if (command.equals("Show centered in Display")) {
            LayerSet ls = (LayerSet) thing.getObject();
            Display.showCentered(ls.getParent(), ls, false, false);
        } else if (command.equals("Delete...")) {
            remove(true, thing, selected_node);
            return;
        } else if (command.equals("Import stack...")) {
            if (thing.getObject() instanceof LayerSet) {
                LayerSet set = (LayerSet) thing.getObject();
                Layer layer = null;
                if (0 == set.getLayers().size()) {
                    layer = Layer.create(set.getProject(), set);
                    if (null == layer)
                        return;
                    tt = thing.getChildTemplate("Layer");
                    ob = layer;
                } else
                    // click on a desired, existing layer.
                    return;
                layer.getProject().getLoader().importStack(layer, null, true);
            } else if (thing.getObject() instanceof Layer) {
                Layer layer = (Layer) thing.getObject();
                layer.getProject().getLoader().importStack(layer, null, true);
                return;
            }
        } else if (command.equals("Import grid...")) {
            if (thing.getObject() instanceof Layer) {
                Layer layer = (Layer) thing.getObject();
                layer.getProject().getLoader().importGrid(layer);
            }
        } else if (command.equals("Import sequence as grid...")) {
            if (thing.getObject() instanceof Layer) {
                Layer layer = (Layer) thing.getObject();
                layer.getProject().getLoader().importSequenceAsGrid(layer);
            }
        } else if (command.equals("Import from text file...")) {
            if (thing.getObject() instanceof Layer) {
                Layer layer = (Layer) thing.getObject();
                layer.getProject().getLoader().importImages(layer);
            }
        } else if (command.equals("Resize LayerSet...")) {
            if (thing.getObject() instanceof LayerSet) {
                LayerSet ls = (LayerSet) thing.getObject();
                ij.gui.GenericDialog gd = ControlWindow.makeGenericDialog("Resize LayerSet");
                gd.addNumericField("new width: ", ls.getLayerWidth(), 3);
                gd.addNumericField("new height: ", ls.getLayerHeight(), 3);
                gd.addChoice("Anchor: ", LayerSet.ANCHORS, LayerSet.ANCHORS[0]);
                gd.showDialog();
                if (gd.wasCanceled())
                    return;
                float new_width = (float) gd.getNextNumber(), new_height = (float) gd.getNextNumber();
                // will complain and prevent cropping existing Displayable objects
                ls.setDimensions(new_width, new_height, gd.getNextChoiceIndex());
            }
        } else if (command.equals("Autoresize LayerSet")) {
            if (thing.getObject() instanceof LayerSet) {
                LayerSet ls = (LayerSet) thing.getObject();
                ls.setMinimumDimensions();
            }
        } else if (command.equals("Adjust...")) {
            if (thing.getObject() instanceof Layer) {
                Layer layer = (Layer) thing.getObject();
                ij.gui.GenericDialog gd = ControlWindow.makeGenericDialog("Adjust Layer");
                gd.addNumericField("new z: ", layer.getZ(), 4);
                gd.addNumericField("new thickness: ", layer.getThickness(), 4);
                gd.showDialog();
                if (gd.wasCanceled())
                    return;
                double new_z = gd.getNextNumber();
                layer.setThickness(gd.getNextNumber());
                if (new_z != layer.getZ()) {
                    layer.setZ(new_z);
                    // move in the tree
                    /*
						DefaultMutableTreeNode child = findNode(thing, this);
						DefaultMutableTreeNode parent = (DefaultMutableTreeNode)child.getParent();
						parent.remove(child);
						// reinsert
						int n = parent.getChildCount();
						int i = 0;
						for (; i < n; i++) {
							DefaultMutableTreeNode child_node = (DefaultMutableTreeNode)parent.getChildAt(i);
							LayerThing child_thing = (LayerThing)child_node.getUserObject();
							if (!child_thing.getType().equals("Layer")) continue;
							double iz = ((Layer)child_thing.getObject()).getZ();
							if (iz < new_z) continue;
							// else, add the layer here, after this one
							break;
						}
						((DefaultTreeModel)this.getModel()).insertNodeInto(child, parent, i);
						*/
                    // fix tree crappiness (empty slot ?!?)
                    /* // the fix doesn't work. ARGH TODO
						Enumeration e = parent.children();
						parent.removeAllChildren();
						i = 0;
						while (e.hasMoreElements()) {
							//parent.add((DefaultMutableTreeNode)e.nextElement());
							((DefaultTreeModel)this.getModel()).insertNodeInto(child, parent, i);
							i++;
						}*/
                    // easier and correct: overkill
                    updateList(layer.getParent());
                    // set selected
                    DefaultMutableTreeNode child = findNode(thing, this);
                    TreePath treePath = new TreePath(child.getPath());
                    this.scrollPathToVisible(treePath);
                    this.setSelectionPath(treePath);
                }
            }
            return;
        } else if (command.equals("Rename...")) {
            GenericDialog gd = ControlWindow.makeGenericDialog("Rename");
            gd.addStringField("new name: ", thing.getTitle());
            gd.showDialog();
            if (gd.wasCanceled())
                return;
            project.getRootLayerSet().addUndoStep(new RenameThingStep(thing));
            thing.setTitle(gd.getNextString());
            project.getRootLayerSet().addUndoStep(new RenameThingStep(thing));
        } else if (command.equals("Translate layers in Z...")) {
            // / TODO: this method should use multiple selections directly on the tree
            if (thing.getObject() instanceof LayerSet) {
                LayerSet ls = (LayerSet) thing.getObject();
                ArrayList<Layer> al_layers = ls.getLayers();
                String[] layer_names = new String[al_layers.size()];
                for (int i = 0; i < layer_names.length; i++) {
                    layer_names[i] = ls.getProject().findLayerThing(al_layers.get(i)).toString();
                }
                GenericDialog gd = ControlWindow.makeGenericDialog("Range");
                gd.addMessage("Translate selected range in the Z axis:");
                gd.addChoice("from: ", layer_names, layer_names[0]);
                gd.addChoice("to: ", layer_names, layer_names[layer_names.length - 1]);
                gd.addNumericField("by: ", 0, 4);
                gd.showDialog();
                if (gd.wasCanceled())
                    return;
                // else, displace
                double dz = gd.getNextNumber();
                if (Double.isNaN(dz)) {
                    Utils.showMessage("Invalid number");
                    return;
                }
                int i_start = gd.getNextChoiceIndex();
                int i_end = gd.getNextChoiceIndex();
                for (int i = i_start; i <= i_end; i++) {
                    Layer layer = (Layer) al_layers.get(i);
                    layer.setZ(layer.getZ() + dz);
                }
                // update node labels and position
                updateList(ls);
            }
        } else if (command.equals("Reverse layer Z coords...")) {
            // / TODO: this method should use multiple selections directly on the tree
            if (thing.getObject() instanceof LayerSet) {
                LayerSet ls = (LayerSet) thing.getObject();
                ArrayList<Layer> al_layers = ls.getLayers();
                String[] layer_names = new String[al_layers.size()];
                for (int i = 0; i < layer_names.length; i++) {
                    layer_names[i] = ls.getProject().findLayerThing(al_layers.get(i)).toString();
                }
                GenericDialog gd = ControlWindow.makeGenericDialog("Range");
                gd.addMessage("Reverse Z coordinates of selected range:");
                gd.addChoice("from: ", layer_names, layer_names[0]);
                gd.addChoice("to: ", layer_names, layer_names[layer_names.length - 1]);
                gd.showDialog();
                if (gd.wasCanceled())
                    return;
                int i_start = gd.getNextChoiceIndex();
                int i_end = gd.getNextChoiceIndex();
                for (int i = i_start, j = i_end; i < i_end / 2; i++, j--) {
                    Layer layer1 = (Layer) al_layers.get(i);
                    double z1 = layer1.getZ();
                    Layer layer2 = (Layer) al_layers.get(j);
                    layer1.setZ(layer2.getZ());
                    layer2.setZ(z1);
                }
                // update node labels and position
                updateList(ls);
            }
        } else if (command.equals("Search...")) {
            Search.showWindow();
        } else if (command.equals("Reset layer Z and thickness")) {
            LayerSet ls = ((LayerSet) thing.getObject());
            List<Layer> layers = ls.getLayers();
            ls.addLayerEditedStep(layers);
            int i = 0;
            for (final Layer la : ls.getLayers()) {
                la.setZ(i++);
                la.setThickness(1);
            }
            ls.addLayerEditedStep(layers);
        } else {
            Utils.log("LayerTree.actionPerformed: don't know what to do with the command: " + command);
            return;
        }
        if (null == tt)
            return;
        new_thing = new LayerThing(tt, thing.getProject(), ob);
        if (-1 == i_position && new_thing.getType().equals("layer")) {
            // find the node whose 'z' is larger than z, and add the Layer before that.
            // (just because there could be objects other than LayerThing with a Layer in it in the future, so set.getLayers().indexOf(layer) may not be useful)
            double z = ((Layer) ob).getZ();
            int n = selected_node.getChildCount();
            int i = 0;
            for (; i < n; i++) {
                DefaultMutableTreeNode child_node = (DefaultMutableTreeNode) selected_node.getChildAt(i);
                LayerThing child_thing = (LayerThing) child_node.getUserObject();
                if (!child_thing.getType().equals("layer")) {
                    continue;
                }
                double iz = ((Layer) child_thing.getObject()).getZ();
                if (iz < z) {
                    continue;
                }
                // else, add the layer here, after this one
                break;
            }
            i_position = i;
        }
        thing.addChild(new_thing);
        DefaultMutableTreeNode new_node = new DefaultMutableTreeNode(new_thing);
        ((DefaultTreeModel) this.getModel()).insertNodeInto(new_node, selected_node, i_position);
        TreePath treePath = new TreePath(new_node.getPath());
        this.scrollPathToVisible(treePath);
        this.setSelectionPath(treePath);
        if (new_thing.getType().equals("layer set")) {
            // add the first layer to it, and open it in a Display
            LayerSet newls = (LayerSet) new_thing.getObject();
            Layer la = new Layer(newls.getProject(), 0, 1, newls);
            addLayer(newls, la);
            new Display(newls.getProject(), la);
        }
    } catch (Exception e) {
        IJError.print(e);
    }
}