/*   
ParallelTextView.zob
 *    
 *    Copyright (c) 2000, Ted Nelson and Tuomas Lukka
 *
 *    You may use and distribute under the terms of either the GNU Lesser
 *    General Public License, either version 2 of the license or,
 *    at your choice, any later version. Alternatively, you may use and
 *    distribute under the terms of the XPL.
 *
 *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
 *    the licenses.
 *
 *    This software 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 README
 *    file for more details.
 *
 */
/*
 * Written by Benjamin Fallenstein
 */
package org.gzigzag;
import java.util.*;
import java.awt.*;

/** A text cloud.
 */

public class ParallelTextView implements FlobView, ZOb {
public static final String rcsid = "$Id: ParallelTextView.zob,v 1.6 2000/12/11 09:03:03 raulir Exp $";
    public static boolean dbg = false;
    static void p(String s) { if(dbg) System.out.println(s); }
    static void pa(String s) { System.out.println(s); }

    static RankTextView vr;

    STRUCTPARAMS {
    }

    public void raster(FlobSet into, FlobFactory fact,
	    ZZCell view, final String[] dims, ZZCell accursed) {

	Dimension d = into.getSize();
	int cy = d.height / 2;
	int width = d.width / 4;
	int xspace = width / 2;

	if(vr == null) {
	    vr = new RankTextView();
	    vr.readParams(null);
	}
	vr.dim = dims[1];
	vr.width = width;
	
	ZZCell[] streams = new ZZCell[] {
	    accursed.s(dims[0], -1),
	    accursed,
	    accursed.s(dims[0], 1),
	};

	int offs = ZZCursorReal.getOffs(view);
	if(offs == ZZCursorReal.NO_OFFSET) offs = 0;
	
	for(int i=0; i < 3; i++) {
	    if(streams[i] == null) continue;
	    int x = i * (width + xspace);
	    vr.raster(into, streams[i], i==1 ? offs : 0, false, x, cy);
	}
	
	// Now, the links
	
	final FlobSet f = (FlobSet)into; // XXX
	final LineDecor.Builder ldb = new LineDecor.Builder(f, Color.red);
	final Hashtable flobtable = new Hashtable();
	
	f.iterDepth(new FlobSet.DepthIter() {
	    public void act(Flob[] flobs, int start, int n) {
		for(int i=start; i<start+n; i++) {
		    Flob flb = flobs[i];
		    if(flb.c == null) continue;
		    // if(((SpanFlob)flb).getPrev() != null) continue;
		    Vector fs = (Vector) flobtable.get(flb.c);
		    if(fs == null) {
			fs = new Vector();
			flobtable.put(flb.c, fs);
		    }
		    fs.addElement(flb);
		}
	    }
	}, true);
		    
	f.iterDepth(new FlobSet.DepthIter() {
	    public void act(Flob[] flobs, int start, int n) {

		ldb.startl(2*n, flobs[start].d + 1);

		for(int i=start; i<start+n; i++) {
		    Flob cur = flobs[i];
		    ZZCell c = cur.c;
		    p(" cell: "+c+" "+(c!=null?c.getText():""));
		    if(!(cur instanceof SpanFlob)) continue;
		    p("   is span flob");
		    if(c == null) continue;
		    SpanFlob spanf = (SpanFlob)cur;
		    // if(spanf.getPrev() != null) continue;
		    p("   doesn't have prev");
		    { // XXX dedent
			ZZCell neigh = c.s(dims[0], 1);
			p(" Neigh: "+neigh+" "+
				(neigh!=null?neigh.getText():""));
			if(neigh == null) continue;
			Vector nflbs = (Vector) flobtable.get(neigh);
			if(nflbs == null) continue;
                        // XXX show connections to non-shown cells!
			for(Enumeration e = nflbs.elements();
			    e.hasMoreElements();) {
			    Flob nf = (Flob) e.nextElement();
			    SpanFlob nsf = (SpanFlob) nf;
			    Flob from=cur, to=nf;
			    ldb.l(
				from.x + from.w,
				from.y + from.h / 2,
				to.x,
				to.y + to.h / 2
			    );
                        }
		    }
		}

		ldb.endl();
	    }
	}, true);
    }
}


// vim: set syntax=java :