20060303a

1 files changed, 1178 insertions, 0 deletions

diff --git a/appl/grid/lib/browser.b b/appl/grid/lib/browser.b
new file mode 100644
index 00000000..c6de92cf
--- /dev/null
+++ b/appl/grid/lib/browser.b
@@ -0,0 +1,1178 @@
+implement Browser;
+
+#
+# Copyright © 2003 Vita Nuova Holdings Limited.  All rights reserved.
+#
+
+include "sys.m";
+	sys : Sys;
+include "draw.m";
+	draw: Draw;
+	Rect: import draw;
+include "tk.m";
+	tk: Tk;
+include "tkclient.m";
+	tkclient: Tkclient;
+include "./pathreader.m";
+include "./browser.m";
+
+entryheight := "";
+
+init()
+{
+	sys = load Sys Sys->PATH;
+	if (sys == nil)
+		badmod(Sys->PATH);
+	draw = load Draw Draw->PATH;
+	if (draw == nil)
+		badmod(Draw->PATH);
+	tk = load Tk Tk->PATH;
+	if (tk == nil)
+		badmod(Tk->PATH);
+	tkclient = load Tkclient Tkclient->PATH;
+	if (tkclient == nil)
+		badmod(Tkclient->PATH);
+	tkclient->init();
+}
+
+Browse.new(top: ref Tk->Toplevel, tkchanname, root, rlabel: string, nopanes: int, reader: PathReader): ref Browse
+{
+	b : Browse;
+	b.top = top;
+	b.tkchan = tkchanname;
+	if (nopanes < 1 || nopanes > 2)
+		return nil;
+	b.nopanes = 2;
+	b.bgnorm = bgnorm;
+	b.bgselect = bgselect;
+	b.selected = array[2] of { * => Selected (File(nil, nil), nil) };
+	b.opened = (root, nil) :: nil;
+	if (root == nil)
+		return nil;
+	if (root[len root - 1] != '/')
+		root[len root] = '/';
+	b.pane0width = "2 3";
+	b.root = root;
+	b.rlabel = rlabel;
+	b.reader = reader;
+	b.pane1 = File (nil, "-123");
+	b.released = 1;
+	tkcmds(top, pane0scr);
+
+	tkcmds(top, pane1scr);
+	tkcmd(top, "bind .fbrowse.lmov <Button-1> {send "+b.tkchan+" movdiv %X}");
+
+	size := tkcmd(top, "grid size .fbrowse");
+	p := isat(size, " ");
+	tkcmd(top, "label .fbrowse.l -text { }  -anchor w -width 0" +
+		" -font /fonts/charon/plain.normal.font");
+	tkcmd(top, ".fbrowse.l configure -height "+tkcmd(top, ".fbrowse.l cget -height"));
+	tkcmd(top, "grid .fbrowse.l -row 0 -column 0 -sticky ew -pady 2 -columnspan 4");
+	rb := ref b;
+	rb.newroot(b.root, b.rlabel);
+	rb.changeview(nopanes);
+	setbrowsescrollr(rb);
+	return rb;
+}
+
+Browse.refresh(b: self ref Browse)
+{
+	scrval := tkcmd(b.top, ".fbrowse.sy1 get");
+	p := isat(scrval, " ");
+	p1 := b.pane1;
+	b.newroot(b.root, b.rlabel);
+	setbrowsescrollr(b);
+	if (b.nopanes == 2)
+		popdirpane1(b, p1);
+	b.selectfile(1,DESELECT, File (nil, nil), nil);
+	b.selectfile(0,DESELECT, File (nil, nil), nil);
+	tkcmd(b.top, ".fbrowse.c1 yview moveto "+scrval[:p]+"; update");
+}
+
+bgnorm := "white";
+bgselect := "#5555FF";
+
+ft := " -font /fonts/charon/plain.normal.font";
+fts := " -font /fonts/charon/plain.tiny.font";
+ftb := " -font /fonts/charon/bold.normal.font";
+
+Browse.gotoselectfile(b: self ref Browse, file: File): string
+{
+	(dir, tkpath) := b.gotopath(file, 0);
+	if (tkpath == nil)
+		return nil;
+	# Select dir
+	tkpath += ".l";
+	if (dir.qid != nil)
+		tkpath += "Q" + dir.qid;
+	b.selectfile(0, SELECT, dir, tkpath);
+
+	# If it is a file, select the file too
+	if (!File.eq(file, dir)) {
+		slaves := tkcmd(b.top, "grid slaves .fbrowse.fl2");
+		(nil, lst) := sys->tokenize(slaves, " ");
+		for (; lst != nil; lst = tl lst) {
+			if (File.eq(file, *b.getpath(hd lst))) {
+				b.selectfile(1, SELECT, file, hd lst);
+				tkpath = hd lst;
+				break;
+			}
+		}
+		pane1see(b);
+	}
+	return tkpath;
+}
+
+pane1see(b: ref Browse)
+{
+	f := b.selected[1].tkpath;
+	if (f == "")
+		return;
+	x1 := int tkcmd(b.top, f+" cget -actx") - int tkcmd(b.top, ".fbrowse.fl2 cget -actx");
+	y1 := int tkcmd(b.top, f+" cget -acty") - int tkcmd(b.top, ".fbrowse.fl2 cget -acty");
+	x2 := x1 + int tkcmd(b.top, f+" cget -actwidth");
+	y2 := y1 + int tkcmd(b.top, f+" cget -actheight");
+	tkcmd(b.top, sys->sprint(".fbrowse.c2 see %d %d %d %d", x1,y1,x2,y2));
+}
+
+Browse.opendir(b: self ref Browse, file: File, tkpath: string, action: int): int
+{
+	curr := tkcmd(b.top, tkpath+".lp cget -text");
+	if ((action == OPEN || action == TOGGLE) && curr == "+") {
+		tkcmd(b.top, tkpath+".lp configure -text {-} -relief sunken");
+		popdirpane0(b, file, tkpath);
+		seeframe(b.top, tkpath);
+		b.addopened(file, 1);
+		setbrowsescrollr(b);
+		return 1;
+	}
+	else if ((action == CLOSE || action == TOGGLE) && curr == "-") {
+		tkcmd(b.top, tkpath+".lp configure -text {+} -relief raised");
+		slaves := tkcmd(b.top, "grid slaves "+tkpath+" -column 1");
+		p := isat(slaves, " ");
+		if (p != -1)
+			tkcmd(b.top, "destroy "+slaves[p:]);
+		slaves = tkcmd(b.top, "grid slaves "+tkpath+" -column 2");
+		if (slaves != "")
+			tkcmd(b.top, "destroy "+slaves);
+		b.addopened(file, 0);
+		setbrowsescrollr(b);
+		return 1;
+	}
+	return 0;
+}
+
+Browse.addopened(b: self ref Browse, file: File, add: int)
+{
+	tmp : list of File = nil;
+	for (; b.opened != nil; b.opened = tl b.opened) {
+		dir := hd b.opened;
+		if (!File.eq(file, dir))
+			tmp = dir :: tmp;
+	}
+	if (add)
+		tmp = file :: tmp;
+	b.opened = tmp;
+}
+
+Browse.changeview(b: self ref Browse, nopanes: int)
+{
+	if (b.nopanes == nopanes)
+		return;
+	w := int tkcmd(b.top, ".fbrowse cget -actwidth");
+	ws := int tkcmd(b.top, ".fbrowse.sy1 cget -width");
+	if (nopanes == 1) {
+		b.pane0width = tkcmd(b.top, ".fbrowse.c1 cget -actwidth") + " " +
+						tkcmd(b.top, ".fbrowse.c2 cget -actwidth");
+		tkcmd(b.top, "grid forget .fbrowse.sx2 .fbrowse.c2 .fbrowse.lmov");
+		tkcmd(b.top, "grid columnconfigure .fbrowse 3 -weight 0");
+	}
+	else {
+		(nil, wlist) := sys->tokenize(b.pane0width, " ");
+		tkcmd(b.top, "grid columnconfigure .fbrowse 1 -weight "+hd wlist);
+		tkcmd(b.top, "grid columnconfigure .fbrowse 3 -weight "+hd tl wlist);
+
+		tkcmd(b.top, "grid .fbrowse.sx2 -row 3 -column 3 -sticky ew");
+		tkcmd(b.top, "grid .fbrowse.c2 -row 2 -column 3 -sticky nsew");
+		tkcmd(b.top, "grid .fbrowse.lmov -row 2 -column 2 -rowspan 2 -sticky ns");
+	}
+	b.nopanes = nopanes;
+}
+
+Browse.selectfile(b: self ref Browse, pane, action: int, file: File, tkpath: string)
+{
+	if (action == SELECT && b.selected[pane].tkpath == tkpath)
+		return;
+	if (b.selected[pane].tkpath != nil)
+		tk->cmd(b.top, b.selected[pane].tkpath+" configure -bg "+bgnorm);
+	if ((action == TOGGLE && b.selected[pane].tkpath == tkpath) || action == DESELECT) {
+		if (pane == 0)
+			popdirpane1(b, File (nil,nil));
+		b.selected[pane] = (File(nil, nil), nil);
+		return;
+	}
+	b.selected[pane] = (file, tkpath);
+	tkcmd(b.top, tkpath+" configure -bg "+bgselect);
+	if (pane == 0)
+		popdirpane1(b, file);
+}
+
+Browse.resize(b: self ref Browse)
+{
+ 	p1 := b.pane1;
+ 	b.pane1 = File (nil, nil);
+ 
+ 	if (p1.path != "")
+ 		popdirpane1(b, p1);
+
+	if (b.selected[1].tkpath != nil) {
+		s := b.selected[1];
+		b.selectfile(1, DESELECT, s.file, s.tkpath);
+		b.selectfile(1, SELECT, s.file, s.tkpath);
+	}
+}
+
+setbrowsescrollr(b: ref Browse)
+{
+	h := tkcmd(b.top, ".fbrowse.fl cget -height");
+	w := tkcmd(b.top, ".fbrowse.fl cget -width");
+	tkcmd(b.top, ".fbrowse.c1 configure -scrollregion {0 0 "+w+" "+h+"}");
+	if (b.nopanes == 2) {
+		h = tkcmd(b.top, ".fbrowse.fl2 cget -height");
+		w = tkcmd(b.top, ".fbrowse.fl2 cget -width");
+		tkcmd(b.top, ".fbrowse.c2 configure -scrollregion {0 0 "+w+" "+h+"}");
+	}
+}
+
+seeframe(top: ref Tk->Toplevel, frame: string)
+{
+	x := int tkcmd(top, frame+" cget -actx") - int tkcmd(top, ".fbrowse.fl cget -actx");
+	y := int tkcmd(top, frame+" cget -acty")  - int tkcmd(top, ".fbrowse.fl cget -acty");
+	w := int tkcmd(top, frame+" cget -width");
+	h := int tkcmd(top, frame+" cget -height");
+	wc := int tkcmd(top, ".fbrowse.c1 cget -width");
+	hc := int tkcmd(top, ".fbrowse.c1 cget -height");
+	if (w > wc)
+		w = wc;
+	if (h > hc)
+		h = hc;
+	tkcmd(top, sys->sprint(".fbrowse.c1 see %d %d %d %d",x,y,x+w,y+h));
+}
+
+# Goes to selected dir OR dir containing selected file
+Browse.gotopath(b: self ref Browse, file: File, openfinal: int): (File, string)
+{
+	tkpath := ".fbrowse.fl.f0";
+	path := b.root;
+	testqid := "";
+	testpath := "";
+	close : list of string;
+	trackbacklist : list of (string, list of string, list of string) = nil;
+	trackback := 0;
+	enddir := "";
+	endfile := "";
+	filetkpath := "";
+	if (file.path[len file.path - 1] != '/') {
+		# i.e. is not a directory
+		p := isatback(file.path, "/");
+		enddir = file.path[:p + 1];
+	}
+	if (enddir == path) {
+		if (!dircontainsfile(b, File (path, nil), file))
+			return (File (nil, nil), nil);
+	}
+	else {
+		for(;;) {
+			lst : list of string;
+			if (trackback) {
+				(path, lst, close) = hd trackbacklist;
+				trackbacklist = tl trackbacklist;
+				if (close != nil)
+					b.opendir(File (hd close, hd tl close), hd tl tl close, CLOSE);
+				trackback = 0;
+			}
+			else {
+				frames := tkcmd(b.top, "grid slaves "+tkpath+" -column 1");
+				(nil, lst) = sys->tokenize(frames, " ");
+				if (lst != nil)
+					lst = tl lst; # ignore first frame (name of parent dir);
+			}
+			found := 0;
+			hasdups := 1;
+			for (; lst != nil; lst = tl lst) {
+				testpath = path;
+				if (hasdups) {
+					labels := tkcmd(b.top, "grid slaves "+hd lst+" -row 0");
+					(nil, lst2) := sys->tokenize(labels, " ");
+					testpath += tkcmd(b.top, hd tl lst2+" cget -text") + "/";
+					testqid = getqidfromlabel(hd tl lst2);
+					if (testqid == nil)
+						hasdups = 0;
+				}
+				else
+					testpath += tkcmd(b.top, hd lst+".l cget -text") + "/";
+				if (len testpath <= len file.path && file.path[:len testpath] == testpath) {
+					opened := 0;
+					close = nil;
+					if (openfinal || testpath != file.path)
+						opened = b.opendir(File(testpath, testqid), hd lst, OPEN);
+					if (opened)
+						close = testpath :: testqid :: hd lst :: nil;
+					if (tl lst != nil && hasdups)
+						trackbacklist = (path, tl lst, close) :: trackbacklist;
+					tkpath = hd lst;
+					path = testpath;
+					found = 1;
+					break;
+				}
+			}
+			if (enddir != nil && path == enddir)
+				if (dircontainsfile(b, File(testpath, testqid), file))
+					break;
+			if (!found) {
+				if (trackbacklist == nil)
+					return (File (nil, nil), nil);
+				trackback = 1;
+			}
+			else if (testpath == file.path && testqid == file.qid)
+				break;
+		}
+	}
+	seeframe(b.top, tkpath);
+	dir := File (path, testqid);
+	popdirpane1(b, dir);
+	return (dir, tkpath);
+}
+
+dircontainsfile(b: ref Browse, dir, file: File): int
+{
+	(files, hasdups) := b.reader->readpath(dir);
+	for (j := 0; j < len files; j++) {					
+		if (files[j].name == file.path[len dir.path:] && 
+				(!hasdups || files[j].qid.path == big file.qid))
+			return 1;
+	}
+	return 0;
+}
+
+Browse.getpath(b: self ref Browse, f: string): ref File
+{
+	if (len f < 11 || f[:11] != ".fbrowse.fl")
+		return nil;
+	(nil, lst) := sys->tokenize(f, ".");
+	lst = tl lst;
+	if (hd lst == "fl2") {
+		# i.e. is in pane 1
+		qid := getqidfromlabel(f);
+		return ref File (b.pane1.path + tk->cmd(b.top, f+" cget -text"), qid);
+	}
+	tkpath := ".fbrowse.fl.f0";
+	path := b.root;
+	lst = tl tl lst;
+	started := 0;
+#	sys->print("getpath: %s %s\n",tkpath, path);
+	qid := "";
+	for (; lst != nil; lst = tl lst) {
+		tkpath += "."+hd lst;
+		if ((hd lst)[0] == 'l') {
+			qid = getqidfromlabel(tkpath);
+			if (qid != nil)
+				qid = "Q" + qid;
+			if (len hd lst - len qid > 1)
+				path += tk->cmd(b.top, tkpath+" cget -text");
+		}
+		else if ((hd lst)[0] == 'f') {
+			qid = getqidfromframe(b,tkpath);
+			if (qid != nil)
+				qid = "Q"+qid;
+			path += tk->cmd(b.top, tkpath+".l"+qid+" cget -text") + "/";
+		}
+#		sys->print("getpath: %s %s\n",tkpath, path);
+	}
+	# Temporary hack!
+	if (qid != nil)
+		qid = qid[1:];
+	return ref File (path, qid);
+}
+
+setroot(b: ref Browse, rlabel, root: string)
+{
+	b.root = root;
+	b.rlabel = rlabel;
+	makedir(b, File (root, nil), ".fbrowse.fl.f0", rlabel, "0");
+	tkcmd(b.top, "grid forget .fbrowse.fl.f0.lp");
+}
+
+getqidfromframe(b: ref Browse, frame: string): string
+{
+	tmp := tkcmd(b.top, "grid slaves "+frame+" -row 0");
+	(nil, lst) := sys->tokenize(tmp, " \t\n");
+	if (lst == nil)
+		return nil;
+	return getqidfromlabel(hd tl lst);
+}
+
+getqidfromlabel(label: string): string
+{
+	p := isatback(label, "Q");
+	if (p != -1)
+		return label[p+1:];
+	return nil;
+}
+
+popdirpane0(b: ref Browse, dir : File, frame: string)
+{
+	(dirs, hasdups) := b.reader->readpath(dir);
+	for (i := 0; i < len dirs; i++) {
+		si := string i;
+		f : string;
+		dirqid := string dirs[i].qid.path;
+		if (!hasdups)
+			dirqid = nil;
+		if (dirs[i].mode & sys->DMDIR) {
+			f = frame + ".f"+si;
+			makedir(b, File (dir.path+dirs[i].name, dirqid), f, dirs[i].name, string (i+1));
+		}
+		else {
+			if (b.nopanes == 1) {
+				f = frame + ".l"+si;
+				makefile(b, f, dirs[i].name, string (i+1), dirqid);
+			}
+		}
+	}
+	dirs = nil;
+}
+
+isopened(b: ref Browse, dir: File): int
+{
+	for (tmp := b.opened; tmp != nil; tmp = tl tmp) {
+		if (File.eq(hd tmp, dir))
+			return 1;
+	}
+	return 0;
+}
+
+makefile(b: ref Browse, f, name, row, qid: string)
+{
+	if (qid != nil)
+		f += "Q" + qid;
+	bgcol := bgnorm;
+#	if (f == selected[0].t1)
+#		bgcol = bgselect;
+	p := isat(name, "\0");
+	if (p != -1) {
+		tkcmd(b.top, "label "+f+" -text {"+name[:p]+"} -bg "+bgcol+ft);
+		tkcmd(b.top, "label "+f+"b -text {"+name[p+1:]+"} -bg "+bgcol+ft);
+		tkcmd(b.top, "grid "+f+" -row "+row+" -column 1 -sticky w -padx 5 -pady 2");
+		tkcmd(b.top, "grid "+f+"b -row "+row+" -column 2 -sticky w -pady 2");
+		tkcmd(b.top, "bind "+f+" <Button-2> {send "+b.tkchan+" but2pane1 "+f+"}");
+		tkcmd(b.top, "bind "+f+" <ButtonRelease-2> {send "+b.tkchan+" release}");
+	}
+	else {
+		tkcmd(b.top, "label "+f+" -text {"+name+"} -bg "+bgcol+ft);
+		tkcmd(b.top, "grid "+f+" -row "+row+" -column 1 -sticky w -padx 5 -pady 2");
+	}
+	tkcmd(b.top, "bind "+f+" <Button-1> {send "+b.tkchan+" but1pane0 "+f+"}");
+	tkcmd(b.top, "bind "+f+" <ButtonRelease-1> {send "+b.tkchan+" release}");
+	tkcmd(b.top, "bind "+f+" <Button-2> {send "+b.tkchan+" but2pane0 "+f+"}");
+	tkcmd(b.top, "bind "+f+" <ButtonRelease-2> {send "+b.tkchan+" release}");
+	tkcmd(b.top, "bind "+f+" <Button-3> {send "+b.tkchan+" but3pane0 "+f+"}");
+	tkcmd(b.top, "bind "+f+" <ButtonRelease-3> {send "+b.tkchan+" release}");
+}
+
+Browse.defaultaction(b: self ref Browse, lst: list of string, rfile: ref File)
+{
+	tkpath: string;
+	file: File;
+	if (len lst > 1) {
+		tkpath = hd tl lst;
+		if (len tkpath > 11 && tkpath[:11] == ".fbrowse.fl") {
+			if (rfile == nil)
+				file = *b.getpath(tkpath);
+			else
+				file = *rfile;
+		}
+	}
+	case hd lst {
+		"release" =>
+			b.released = 1;
+		"open" or "double1pane0" =>
+			if (file.path == b.root)
+				break;
+			if (b.released) {
+				b.selectfile(0, DESELECT, File(nil, nil), nil);
+				b.selectfile(1, DESELECT, File(nil, nil), nil);
+				b.opendir(file, prevframe(tkpath), TOGGLE);
+				b.selectfile(0, SELECT, file, tkpath);
+				b.released = 0;
+			}
+		"double1pane1" =>
+			b.gotoselectfile(file);
+		"but1pane0" =>
+			if (b.released) {
+				b.selectfile(1, DESELECT, File(nil, nil), nil);
+				b.selectfile(0, TOGGLE, file, tkpath);
+				b.released = 0;
+			}
+ 		"but1pane1" =>
+			if (b.released) {
+				b.selectfile(1, TOGGLE, file, tkpath);
+				b.released = 0;
+			}
+ 		"movdiv" =>
+			movdiv(b, int hd tl lst);
+	}
+}
+
+prevframe(tkpath: string): string
+{
+	end := len tkpath;
+	for (;;) {
+		p := isatback(tkpath[:end], ".");
+		if (tkpath[p+1] == 'f')
+			return tkpath[:end];
+		end = p;
+	}
+	return nil;
+}
+
+makedir(b: ref Browse, dir: File, f, name, row: string)
+{
+	bgcol := bgnorm;
+	if (f == ".fbrowse.fl.f0")
+		dir = File (b.root, nil);
+#	if (name == "")
+#		name = path;
+	if (dir.path[len dir.path - 1] != '/')
+		dir.path[len dir.path] = '/';
+	if (File.eq(dir, b.selected[0].file))
+		bgcol = bgselect;
+	tkcmd(b.top, "frame "+f+" -bg white");
+	label := f+".l";
+	if (dir.qid != nil)
+		label += "Q" + dir.qid;
+	tkcmd(b.top, "label "+label+" -text {"+name+"} -bg "+bgcol+ftb);
+	if (isopened(b, dir)) {
+		popdirpane0(b, dir, f);
+		tkcmd(b.top, "label "+f+".lp -text {-} -borderwidth 1 -relief sunken -height 8 -width 8"+fts);
+	}
+	else tkcmd(b.top, "label "+f+".lp -text {+} -borderwidth 1 -relief raised -height 8 -width 8"+fts);
+	tkcmd(b.top, "bind "+label+" <Button-1> {send "+b.tkchan+" but1pane0 "+label+"}");
+	tkcmd(b.top, "bind "+label+" <Double-Button-1> {send "+b.tkchan+" double1pane0 "+label+"}");
+	tkcmd(b.top, "bind "+label+" <ButtonRelease-1> {send "+b.tkchan+" release}");
+	tkcmd(b.top, "bind "+label+" <Button-3> {send "+b.tkchan+" but3pane0 "+label+"}");
+	tkcmd(b.top, "bind "+label+" <ButtonRelease-3> {send "+b.tkchan+" release}");
+	tkcmd(b.top, "bind "+label+" <Button-2> {send "+b.tkchan+" but2pane0 "+label+"}");
+	tkcmd(b.top, "bind "+label+" <ButtonRelease-2> {send "+b.tkchan+" release}");
+
+	tkcmd(b.top, "bind "+f+".lp <Button-1> {send "+b.tkchan+" open "+label+"}");
+	tkcmd(b.top, "bind "+f+".lp <ButtonRelease-1> {send "+b.tkchan+" release}");
+	tkcmd(b.top, "grid "+f+".lp -row 0 -column 0");
+	tkcmd(b.top, "grid "+label+" -row 0 -column 1 -sticky w -padx 5 -pady 2 -columnspan 2");
+	tkcmd(b.top, "grid "+f+" -row "+row+" -column 1 -sticky w -padx 5 -columnspan 2");
+}
+
+popdirpane1(b: ref Browse, dir: File)
+{
+#	if (path == b.pane1.path && qid == b.pane1.qid)
+#		return;
+	b.pane1 = dir;
+	labelset(b, ".fbrowse.l", prevpath(dir.path+"/"));
+	if (b.nopanes == 1)
+		return;
+	tkcmd(b.top, "destroy .fbrowse.fl2; frame .fbrowse.fl2 -bg white");
+	tkcmd(b.top, ".fbrowse.c2 create window 0 0 -window .fbrowse.fl2 -anchor nw");
+	if (dir.path == nil) {
+		setbrowsescrollr(b);
+		return;
+	}
+	(dirs, hasdups) := b.reader->readpath(dir);
+#	if (path[len path - 1] == '/')
+#		path = path[:len path - 1];
+#	tkcmd(b.top, "label .fbrowse.fl2.l -text {"+path+"}");
+	row := 0;
+	col := 0;
+	tkcmd(b.top, ".fbrowse.c2 see 0 0");
+	ni := 0;
+	n := (int tkcmd(b.top, ".fbrowse.c2 cget -actheight")) / 21;
+	for (i := 0; i < len dirs; i++) {
+
+		f := ".fbrowse.fl2.l"+string ni;
+		if (hasdups)
+			f += "Q" + string dirs[i].qid.path;
+		name := dirs[i].name;
+		isdir := dirs[i].mode & sys->DMDIR;
+		if (isdir)
+			name[len name]= '/';
+		bgcol := bgnorm;
+		# Sort this out later
+		# if (path+"/"+name == selected[1].t0) {
+		#	bgcol = bgselect;
+		#	selected[1].t1 = f;
+		#}
+		tkcmd(b.top, "label "+f+" -text {"+name+"} -bg "+bgcol+ft);
+		tkcmd(b.top, "bind "+f+" <Double-Button-1> {send "+b.tkchan+" double1pane1 "+f+"}");
+		tkcmd(b.top, "bind "+f+" <Button-1> {send "+b.tkchan+" but1pane1 "+f+"}");
+		tkcmd(b.top, "bind "+f+" <ButtonRelease-1> {send "+b.tkchan+" release}");
+		tkcmd(b.top, "bind "+f+" <Button-3> {send "+b.tkchan+" but3pane1 "+f+" %X %Y}");
+		tkcmd(b.top, "bind "+f+" <ButtonRelease-3> {send "+b.tkchan+" release}");
+		tkcmd(b.top, "grid "+f+" -row "+string row+" -column "+string col+
+					" -sticky w -padx 10 -pady 2");
+		row++;
+		if (row >= n) {
+			row = 0;
+			col++;
+		}		
+		ni++;
+	}
+
+	dirs = nil;
+	setbrowsescrollr(b);
+}
+
+pane0scr := array[] of {
+	"frame .fbrowse",
+
+	"scrollbar .fbrowse.sy1 -command {.fbrowse.c1 yview}",
+	"scrollbar .fbrowse.sx1 -command {.fbrowse.c1 xview} -orient horizontal",
+	"canvas .fbrowse.c1 -yscrollcommand {.fbrowse.sy1 set} -xscrollcommand {.fbrowse.sx1 set} -bg white -width 50 -height 20 -borderwidth 2 -relief sunken -xscrollincrement 10 -yscrollincrement 21",
+	"grid .fbrowse.sy1 -row 2 -column 0 -sticky ns -rowspan 2",
+	"grid .fbrowse.sx1 -row 3 -column 1 -sticky ew",
+	"grid .fbrowse.c1 -row 2 -column 1 -sticky nsew",
+	"grid rowconfigure .fbrowse 2 -weight 1",
+	"grid columnconfigure .fbrowse 1 -weight 2",
+
+};
+
+pane1scr := array[] of {
+#	".fbrowse.c1 configure -width 146",
+	"frame .fbrowse.fl2 -bg white",
+	"label .fbrowse.fl2.l -text {}",
+	"scrollbar .fbrowse.sx2 -command {.fbrowse.c2 xview} -orient horizontal",
+	"label .fbrowse.lmov -text { } -relief sunken -borderwidth 2 -width 5",
+	
+	"canvas .fbrowse.c2 -xscrollcommand {.fbrowse.sx2 set} -bg white -width 50 -height 20 -borderwidth 2 -relief sunken -xscrollincrement 10 -yscrollincrement 21",
+	".fbrowse.c2 create window 0 0 -window .fbrowse.fl2 -anchor nw",
+	"grid .fbrowse.sx2 -row 3 -column 3 -sticky ew",
+	"grid .fbrowse.c2 -row 2 -column 3 -sticky nsew",
+	"grid .fbrowse.lmov -row 2 -column 2 -rowspan 2 -sticky ns",
+	"grid columnconfigure .fbrowse 3 -weight 3",
+};
+
+Browse.newroot(b: self ref Browse, root, rlabel: string)
+{
+	tk->cmd(b.top, "destroy .fbrowse.fl");
+	tkcmd(b.top, "frame .fbrowse.fl -bg white");
+	tkcmd(b.top, ".fbrowse.c1 create window 0 0 -window .fbrowse.fl -anchor nw");
+	b.pane1 = File (root, nil);
+	setroot(b, rlabel, root);
+	setbrowsescrollr(b);
+}
+
+Browse.showpath(b: self ref Browse, on: int)
+{
+	if (on == b.showpathlabel)
+		return;
+	if (on) {
+		b.showpathlabel = 1;
+		if (b.pane1.path != nil)
+			labelset(b, ".fbrowse.l", prevpath(b.pane1.path+"/"));
+	}
+	else {
+		b.showpathlabel = 0;
+		tkcmd(b.top, ".fbrowse.l configure -text {}");
+	}	
+}
+
+Browse.getselected(b: self ref Browse, pane: int): File
+{
+	return b.selected[pane].file;
+}
+
+labelset(b: ref Browse, label, text: string)
+{
+	if (!b.showpathlabel)
+		return;
+	if (text != nil) {
+		tmp := b.rlabel;
+		if (tmp[len tmp - 1] != '/')
+			tmp[len tmp] = '/';
+		text = tmp + text[len b.root:];
+	}
+	tkcmd(b.top, label + " configure -text {"+text+"}");
+}
+
+movdiv(b: ref Browse, x: int)
+{
+	x1 := int tkcmd(b.top, ".fbrowse.lmov cget -actx");
+	x2 := x1 + int tkcmd(b.top, ".fbrowse.lmov cget -width");
+	diff := 0;
+	if (x < x1)
+		diff = x - x1;
+	if (x > x2)
+		diff = x - x2;
+	if (abs(diff) > 5) {
+		w1 := int tkcmd(b.top, ".fbrowse.c1 cget -actwidth");
+		w2 := int tkcmd(b.top, ".fbrowse.c2 cget -actwidth");
+		if (w1 + diff < 36)
+			diff = 36 - w1;
+		if (w2 - diff < 36)
+			diff = w2 - 36;
+		w1 += diff;
+		w2 -= diff;
+		# sys->print("w1: %d w2: %d\n",w1,w2);
+		tkcmd(b.top, "grid columnconfigure .fbrowse 1 -weight "+string w1);
+		tkcmd(b.top, "grid columnconfigure .fbrowse 3 -weight "+string w2);
+	}
+}
+
+
+dialog(ctxt: ref draw->Context, oldtop: ref Tk->Toplevel, butlist: list of string, title, msg: string): int
+{
+	(top, titlebar) := tkclient->toplevel(ctxt, "", title, tkclient->Popup);
+	butchan := chan of string;
+	tk->namechan(top, butchan, "butchan");
+	tkcmd(top, "frame .f");
+	tkcmd(top, "label .f.l -text {"+msg+"} -font /fonts/charon/plain.normal.font");
+	tkcmd(top, "bind .Wm_t <Button-1> +{focus .}");
+	tkcmd(top, "bind .Wm_t.title <Button-1> +{focus .}");
+
+	l := len butlist;
+	tkcmd(top, "grid .f.l -row 0 -column 0 -columnspan "+string l+" -sticky w -padx 10 -pady 5");
+	i := 0;
+	for(; butlist != nil; butlist = tl butlist) {
+		si := string i;
+		tkcmd(top, "button .f.b"+si+" -text {"+hd butlist+"} "+
+			"-font /fonts/charon/plain.normal.font -command {send butchan "+si+"}");
+		tkcmd(top, "grid .f.b"+si+" -row 1 -column "+si+" -padx 5 -pady 5");
+		i++;
+	}
+	placement := "";
+	if (oldtop != nil) {
+		setcentre(oldtop, top);
+		placement = "exact";
+	}
+	tkcmd(top, "pack .f; update; focus .");
+	tkclient->onscreen(top, placement);
+	tkclient->startinput(top, "kbd"::"ptr"::nil);
+	for (;;) {
+		alt {
+		s := <-top.ctxt.kbd =>
+			tk->keyboard(top, s);
+		s := <-top.ctxt.ptr =>
+			tk->pointer(top, *s);
+		inp := <- butchan =>
+			tkcmd(oldtop, "focus .");
+			return int inp;
+		title = <-top.ctxt.ctl or
+		title = <-top.wreq or
+		title = <-titlebar =>
+			if (title == "exit") {
+				tkcmd(oldtop, "focus .");
+				return -1;
+			}
+			tkclient->wmctl(top, title);
+		}
+	}
+}
+######################## Select Functions #########################
+
+
+setselectscrollr(s: ref Select, f: string)
+{
+	h := tkcmd(s.top, f+" cget -height");
+	w := tkcmd(s.top, f+" cget -width");
+	tkcmd(s.top, ".fselect.c configure -scrollregion {0 0 "+w+" "+h+"}");
+}
+
+Select.setscrollr(s: self ref Select, fname: string)
+{
+	frame := getframe(s, fname);
+	if (frame != nil)
+		setselectscrollr(s,frame.path);
+}
+
+Select.new(top: ref Tk->Toplevel, tkchanname: string): ref Select
+{
+	s: Select;
+	s.top = top;
+	s.tkchan = tkchanname;
+	s.frames = nil;
+	s.currfname = nil;
+	s.currfid = nil;
+	tkcmds(top, selectscr);
+	if (entryheight == nil) {
+		tkcmd(top, "entry .fselect.test");
+		entryheight = " -height " + tkcmd(top, ".fselect.test cget -height");
+		tkcmd(top, "destroy .fselect.test");
+	}
+	for (i := 1; i < 4; i++)
+		tkcmd(top, "bind .fselect.c <ButtonRelease-"+string i+"> {send "+s.tkchan+" release}");
+	return ref s;
+}
+
+selectscr := array[] of {
+	"frame .fselect",
+	"scrollbar .fselect.sy -command {.fselect.c yview}",
+	"scrollbar .fselect.sx -command {.fselect.c xview} -orient horizontal",
+	"canvas .fselect.c -yscrollcommand {.fselect.sy set} -xscrollcommand {.fselect.sx set} -bg white -width 414 -borderwidth 2 -relief sunken -height 180 -xscrollincrement 10 -yscrollincrement 19",
+
+	"grid .fselect.sy -row 0 -column 0 -sticky ns -rowspan 2",
+	"grid .fselect.sx -row 1 -column 1 -sticky ew",
+	"grid .fselect.c -row 0 -column 1",
+};
+
+Select.addframe(s: self ref Select, fname, title: string)
+{
+	if (isat(fname, " ") != -1)
+		return;
+	f := ".fselect.f"+fname;
+	tkcmd(s.top, "frame "+f+" -bg white");
+	if (title != nil){
+		tkcmd(s.top, "label "+f+".l -text {"+title+"} -bg white "+
+			"-font /fonts/charon/bold.normal.font; "+
+			"grid "+f+".l -row 0 -column 0 -columnspan 3 -sticky w");
+	}
+	fr: Frame;
+	fr.name = fname;
+	fr.path = f;
+	fr.selected = nil;
+	s.frames = ref fr :: s.frames;
+}
+
+getframe(s: ref Select, fname: string): ref Frame
+{
+	for (tmp := s.frames; tmp != nil; tmp = tl tmp)
+		if ((hd tmp).name == fname)
+			return hd tmp;
+	return nil;
+}
+
+Select.delframe(s: self ref Select, fname: string)
+{
+	if (s.currfname == fname) {
+		tkcmd(s.top, ".fselect.c delete " + s.currfid);
+		s.currfid = nil;
+		s.currfname = nil;
+	}
+	f := getframe(s,fname);
+	if (f != nil) {
+		tkcmd(s.top, "destroy "+f.path);
+		tmp: list of ref Frame = nil;
+		for (;s.frames != nil; s.frames = tl s.frames) {
+			if ((hd s.frames).name != fname)
+				tmp = hd s.frames :: tmp;
+		}
+		s.frames = tmp;
+	}
+}
+
+Select.showframe(s: self ref Select, fname: string)
+{
+	if (s.currfid != nil)
+		tkcmd(s.top, ".fselect.c delete " + s.currfid);
+	f := getframe(s, fname);
+	if (f != nil) {
+		s.currfid = tkcmd(s.top, ".fselect.c create window 0 0 "+
+				"-window "+f.path+" -anchor nw");
+		s.currfname = fname;
+	}
+}
+
+Select.addselection(s: self ref Select, fname, text: string, lp: list of ref Parameter, allowdups: int): string
+{
+	fr := getframe(s, fname);
+	if (fr == nil)
+		return nil;
+	f := fr.path;
+	if (!allowdups) {
+		slv := tkcmd(s.top, "grid slaves "+f+" -column 0");
+		(nil, slaves) := sys->tokenize(slv, " \t\n");
+		for (; slaves != nil; slaves = tl slaves) {
+			if (text == tkcmd(s.top, hd slaves+" cget -text"))
+				return nil;
+		}
+	}
+	font := " -font /fonts/charon/plain.normal.font";
+	fontb := " -font /fonts/charon/bold.normal.font";
+	(id, row) := newselected(s.top, f);
+	sid := string id;
+	label := f+".l"+sid;
+	tkcmd(s.top, "label "+label+" -text {"+text+"} -bg white"+entryheight+font);
+	gridpack := label+" ";
+	paramno := 0;
+	for (; lp != nil; lp = tl lp) {
+		spn := string paramno;
+		pframe := f+".f"+sid+"P"+spn;
+		tkcmd(s.top, "frame "+pframe+" -bg white");
+		pick p := hd lp {
+		ArgIn =>
+			tkp1 := pframe+".lA";
+			tkp2 := pframe+".eA";
+
+			tkcmd(s.top, "label "+tkp1+" -text {"+p.name+"} "+
+					"-bg white "+entryheight+fontb);
+			tkcmd(s.top, "entry "+tkp2+" -bg white -width 50 "+
+					"-borderwidth 1"+entryheight+font);
+			if (p.initval != nil)
+				tkcmd(s.top, tkp2+" insert end {"+p.initval+"}");
+			tkcmd(s.top, "grid "+tkp1+" "+tkp2+" -row 0");
+			
+		IntIn =>
+			tkp1 := pframe+".sI";
+			tkp2 := pframe+".lI";
+			tkcmd(s.top, "scale "+tkp1+" -showvalue 0 -orient horizontal -height 20"+
+				" -from "+string p.min+" -to "+string p.max+" -command {send "+
+				s.tkchan+" scale "+tkp2+"}");
+			tkcmd(s.top, tkp1+" set "+string p.initval);
+			tkcmd(s.top, "label "+tkp2+" -text {"+string p.initval+"} "+
+					"-bg white "+entryheight+fontb);
+			tkcmd(s.top, "grid "+tkp1+" "+tkp2+" -row 0");
+			
+		}
+		gridpack += " "+pframe;
+		paramno++;
+	}
+	tkcmd(s.top, "grid "+gridpack+" -row "+row+" -sticky w");
+	
+	sendstr := " " + label + " %X %Y}";
+	tkcmd(s.top, "bind "+label+" <Double-Button-1> {send "+s.tkchan+" double1"+sendstr);
+	tkcmd(s.top, "bind "+label+" <Button-1> {send "+s.tkchan+" but1"+sendstr);
+	tkcmd(s.top, "bind "+label+" <ButtonRelease-1> {send "+s.tkchan+" release}");
+	tkcmd(s.top, "bind "+label+" <Button-2> {send "+s.tkchan+" but2"+sendstr);
+	tkcmd(s.top, "bind "+label+" <ButtonRelease-2> {send "+s.tkchan+" release}");
+	tkcmd(s.top, "bind "+label+" <Button-3> {send "+s.tkchan+" but3"+sendstr);
+	tkcmd(s.top, "bind "+label+" <ButtonRelease-3> {send "+s.tkchan+" release}");
+	setselectscrollr(s, f);
+	if (s.currfname == fname) {
+		y := int tkcmd(s.top, label+"  cget -acty") -
+			int tkcmd(s.top, f+" cget -acty");
+		h := int tkcmd(s.top, label+"  cget -height");
+		tkcmd(s.top, ".fselect.c see 0 "+string (h+y));
+	}
+	return label;
+}
+
+newselected(top: ref Tk->Toplevel, frame: string): (int, string)
+{
+	(n, slaves) := sys->tokenize(tkcmd(top, "grid slaves "+frame+" -column 0"), " \t\n");
+	id := 0;
+	slaves = tl slaves; # Ignore Title
+	for (;;) {
+		if (isin(slaves, frame+".l"+string id))
+			id++;
+		else break;
+	}
+	return (id, string n);
+}
+
+isin(l: list of string, test: string): int
+{
+	for(tmpl := l; tmpl != nil; tmpl = tl tmpl)
+		if (hd tmpl == test)
+			return 1;
+	return 0;
+}
+
+Select.delselection(s: self ref Select, fname, tkpath: string)
+{
+	f := getframe(s, fname);
+	(row, nil) := getrowcol(s.top, tkpath);
+	slaves := tkcmd(s.top, "grid slaves "+f.path+" -row "+row);
+	# sys->print("row %s: deleting: %s\n",row,slaves);
+	tkcmd(s.top, "grid rowdelete "+f.path+" "+row);
+	tkcmd(s.top, "destroy "+slaves);
+	# Select the next one if the item deleted was selected
+	if (f.selected == tkpath) {
+		f.selected = nil;
+		for (;;) {
+			slaves = tkcmd(s.top, "grid slaves "+f.path+" -row "+row);
+			if (slaves != nil)
+				break;
+			r := (int row) - 1;
+			if (r < 1)
+				return;
+			row = string r;
+		}
+		(nil, lst) := sys->tokenize(slaves, " ");
+		if (lst != nil)
+			s.select(fname, hd lst, SELECT);
+	}
+}
+
+getrowcol(top: ref Tk->Toplevel, s: string): (string, string)
+{
+	row := "";
+	col := "";
+	(nil, lst) := sys->tokenize(tkcmd(top, "grid info "+s), " \t\n");
+	for (; lst != nil; lst = tl lst) {	
+		if (hd lst == "-row")
+			row = hd tl lst;
+		else if (hd lst == "-column")
+			col = hd tl lst;
+	}
+	return (row, col);
+}
+
+Select.select(s: self ref Select, fname, tkpath: string, action: int)
+{
+	f := getframe(s, fname);
+	if (action == SELECT && f.selected == tkpath)
+		return;
+	if (f.selected != nil)
+		tkcmd(s.top, f.selected+" configure -bg "+bgnorm);
+	if ((action == TOGGLE && f.selected == tkpath) || action == DESELECT)
+		f.selected = nil;
+	else {
+		tkcmd(s.top, tkpath+" configure -bg "+bgselect);
+		f.selected = tkpath;
+	}
+}
+
+Select.defaultaction(s: self ref Select, lst: list of string)
+{
+	case hd lst {
+		"but1" =>
+			s.select(s.currfname, hd tl lst, TOGGLE);
+		"scale" =>
+			tkcmd(s.top, hd tl lst+" configure -text {"+hd tl tl lst+"}");
+	}
+}
+
+Select.getselected(s: self ref Select, fname: string): string
+{
+	retlist : list of (int, list of ref Parameter) = nil;
+	row := 1;
+	f := getframe(s, fname);
+	return f.selected;
+}
+
+Select.getselection(s: self ref Select, fname: string): list of (string, list of ref Parameter)
+{
+	retlist : list of (string, list of ref Parameter) = nil;
+	row := 1;
+	f := getframe(s, fname);
+	for (;;) {
+		slaves := tkcmd(s.top, "grid slaves "+f.path+" -row "+string (row++));
+		# sys->print("slaves: %s\n",slaves);
+		if (slaves == nil || slaves[0] == '!')
+			break;
+		(nil, lst) := sys->tokenize(slaves, " ");
+		pos := isatback(hd lst, "l");
+		tkpath := hd lst;
+		lst = tl lst;
+		lp : list of ref Parameter = nil;
+		for (; lst != nil; lst = tl lst) {
+			pslaves := tkcmd(s.top, "grid slaves "+hd lst);
+			(nil, plist) := sys->tokenize(pslaves, " ");
+			# sys->print("slaves of %s - hd plist: '%s'\n",hd lst, hd plist);
+			case (hd plist)[len hd plist - 3:] {
+				".eA" or ".lA" =>
+					argname := tkcmd(s.top, hd lst+".lA cget -text");
+					argval := tkcmd(s.top, hd lst+".eA get");
+					lp = ref Parameter.ArgOut(argname, argval) :: lp;
+				".sI" or ".lI" =>
+					val := int tkcmd(s.top, hd lst+".lI cget -text");
+					lp = ref Parameter.IntOut(val) :: lp;
+			}
+		}
+		retlist = (tkpath, lp) :: retlist;	
+	}
+	return retlist;
+}
+
+Select.resize(s: self ref Select, width, height: int)
+{
+	ws := int tkcmd(s.top, ".fselect.sy cget -width");
+	hs := int tkcmd(s.top, ".fselect.sx cget -height");
+
+	tkcmd(s.top, ".fselect.c configure -width "+string (width - ws - 8)+
+			" -height "+string (height - hs - 8));
+	f := getframe(s, s.currfname);
+	if (f != nil)
+		setselectscrollr(s, f.path);
+
+	tkcmd(s.top, "update");
+}
+
+File.eq(a,b: File): int
+{
+	if (a.path != b.path || a.qid != b.qid)
+		return 0;
+	return 1;
+}
+
+
+######################## General Functions ########################
+
+setcentre(top1, top2: ref Tk->Toplevel)
+{
+	x1 := int tkcmd(top1, ". cget -actx");
+	y1 := int tkcmd(top1, ". cget -acty");
+	h1 := int tkcmd(top1, ". cget -height");
+	w1 := int tkcmd(top1, ". cget -width");
+
+	h2 := int tkcmd(top2, ".f cget -height");
+	w2 := int tkcmd(top2, ".f cget -width");
+
+	newx := (x1 + (w1 / 2)) - (w2/2);
+	newy := (y1 + (h1 / 2)) - (h2/2);
+	tkcmd(top2, ". configure -x "+string newx+" -y "+string newy);
+}
+
+abs(x: int): int
+{
+	if (x < 0)
+		return -x;
+	return x;
+}
+
+prevpath(path: string): string
+{
+	if (path == nil)
+		return nil;
+	p := isatback(path[:len path - 1], "/");
+	if (p == -1)
+		return nil;
+	return path[:p+1];
+}
+
+isat(s, test: string): int
+{
+	if (len test > len s)
+		return -1;
+	for (i := 0; i < (1 + len s - len test); i++)
+		if (test == s[i:i+len test])
+			return i;
+	return -1;
+}
+
+isatback(s, test: string): int
+{
+	if (len test > len s)
+		return -1;
+	for (i := len s - len test; i >= 0; i--)
+		if (test == s[i:i+len test])
+			return i;
+	return -1;
+}
+
+tkcmd(top: ref Tk->Toplevel, cmd: string): string
+{
+	e := tk->cmd(top, cmd);
+	if (e != "" && e[0] == '!')
+		sys->print("Tk error: '%s': %s\n",cmd,e);
+	return e;
+}
+
+tkcmds(top: ref Tk->Toplevel, a: array of string)
+{
+	for (j := 0; j < len a; j++)
+		tkcmd(top, a[j]);
+}
+
+badmod(path: string)
+{
+	sys->print("Browser: failed to load: %s\n",path);
+	exit;
+}