VisClient/org/hfbk/vis/visnode/VisDir.java

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package org.hfbk.vis.visnode;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.dronus.graph.Node;
import org.hfbk.vis.Allesfresser;
import org.hfbk.vis.Prefs;
import org.lwjgl.util.vector.Vector3f;

public class VisDir extends VisImagefield {

        HashMap<File, VisNode> visnodesByFiles = new HashMap<File, VisNode>();

        HashMap<File, Long> tstamps = new HashMap<File, Long>();

        Allesfresser af;

        public VisDir(Node n, Vector3f position) {
                super(n, position);
        }

        void renderSelf() {
                String dir = node.text;
                if (dir.equals(""))
                        dir = Prefs.current.watchdir;
                if (dir.equals(".") || !new File(dir).exists()) {
                        children.clear();
                        return;
                }

                // build a Allesfresser if needed
                if (af == null)
                        af = new Allesfresser(getRoot().client);

                int count = children.size();

                List<VisNode> active = new ArrayList<VisNode>();

                // for all files in dir..
                for (File f : new File(dir).listFiles()) {

                        long tstamp = f.lastModified(); // get modification time
                        VisNode currentv = visnodesByFiles.get(f); // find VisNode if file
                                                                                                                // is
                        // already visualised.

                        if ((currentv == null || tstamps.get(f) < tstamp) && !f.isHidden()
                                        && !f.getPath().endsWith("~")) {
                                // if a file is new or modified, and it is not hidden
                                // and not a backup file (....~)

                                VisNode v = null;
                                try { // try to get a VisNode for that file
                                        v = af.frissFile("file://" + f.getAbsolutePath());
                                } catch (Exception e) {
                                        System.out.println("Unable to read " + f.getAbsolutePath());
                                }

                                if (v != null) { // we found something visualisable!

                                        // show a + button instead of dir recursion
                                        // to allow user to decide to go into
                                        if (v instanceof VisDir)
                                                v = new OpenButton(v, f);

                                        if (currentv != null) {
                                                // we already visualised this one,
                                                // replace it by the new version
                                                children.set(children.indexOf(currentv), v); // replace
                                                v.position = currentv.position; // keep position
                                                v.parent = this;
                                        } else {
                                                // a new file, just add it
                                                add(v);
                                        }
                                        currentv = v;
                                }

                                visnodesByFiles.put(f, v); // store visualisation
                                tstamps.put(f, tstamp); // store modification time
                                // else if (Prefs.current.verbose)
                                // System.out.println(f.getName()+" rejected");

                        }

                        if (currentv != null)
                                active.add(currentv);
                }

                children.retainAll(active);

                if (count != children.size())// amount of files changed
                        setLayout(layoutMode); // redo layout

                super.renderSelf();
        }

        class OpenButton extends MoreButton {
                VisNode n;
                File dir;

                public OpenButton(VisNode n) {
                        super(new Vector3f());
                        this.n = n;

                }

                public OpenButton(VisNode n, File dir) {
                        super(new Vector3f());
                        this.n = n;
                        this.help = dir.getName();
                        this.dir = dir;
                }

                public void handleClick() {
                        // just replace this button by
                        // associated VisDir.
                        int i = parent.children.indexOf(this);
                        parent.children.remove(i);
                        parent.children.add(i, n);
                        n.parent = parent;
                        n.position.x = parent.getExtends();
                        visnodesByFiles.put(dir, n); // replace too
                }
        }
}

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