ref: d540dcf6834b4bec8a2d21f2fe95eccf49f97b03
dir: /appl/grid/lib/fbrowse.b/
implement FBrowse;
#
# 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 "readdir.m";
readdir: Readdir;
include "workdir.m";
include "sh.m";
sh: Sh;
include "grid/pathreader.m";
reader: PathReader;
include "grid/browser.m";
browser: Browser;
Browse, Select, File, Parameter,
DESELECT, SELECT, TOGGLE: import browser;
include "grid/fbrowse.m";
br: ref Browse;
init(ctxt : ref Draw->Context, title, root, currdir: string): string
{
sys = load Sys Sys->PATH;
if (sys == nil)
badmod(Sys->PATH);
draw = load Draw Draw->PATH;
if (draw == nil)
badmod(Draw->PATH);
readdir = load Readdir Readdir->PATH;
if (readdir == nil)
badmod(Readdir->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();
workdir := load Workdir Workdir->PATH;
if (workdir == nil)
badmod(Workdir->PATH);
sh = load Sh Sh->PATH;
if (sh == nil)
badmod(Sh->PATH);
browser = load Browser Browser->PATH;
if (browser == nil)
badmod(Browser->PATH);
browser->init();
reader = load PathReader "$self";
if (reader == nil)
sys->print("cannot load reader!\n");
sys->pctl(sys->NEWPGRP, nil);
if (root == nil)
root = "/";
sys->chdir(root);
if (currdir == nil)
currdir = workdir->init();
if (root[len root - 1] != '/')
root[len root] = '/';
if (currdir[len currdir - 1] != '/')
currdir[len currdir] = '/';
(top, titlebar) := tkclient->toplevel(ctxt,"", title , tkclient->OK | tkclient->Appl);
browsechan := chan of string;
tk->namechan(top, browsechan, "browsechan");
br = Browse.new(top, "browsechan", root, root, 2, reader);
br.addopened(File (root, nil), 1);
br.gotoselectfile(File (currdir, nil));
for (ik := 0; ik < len mainscreen; ik++)
tkcmd(top,mainscreen[ik]);
butchan := chan of string;
tk->namechan(top, butchan, "butchan");
tkcmd(top, "pack .f -fill both -expand 1; pack propagate . 0");
tkcmd(top, ". configure -height 300 -width 300");
tkcmd(top, "update");
released := 1;
title = "";
tkclient->onscreen(top, nil);
resize(top, ctxt.display.image);
tkclient->startinput(top, "kbd"::"ptr"::nil);
path: string;
main: for (;;) {
alt {
s := <-top.ctxt.kbd =>
tk->keyboard(top, s);
s := <-top.ctxt.ptr =>
tk->pointer(top, *s);
inp := <-browsechan =>
(nil, lst) := sys->tokenize(inp, " \n\t");
selected := br.getselected(1);
case hd lst {
"double1pane1" =>
tkpath := hd tl lst;
file := br.getpath(tkpath);
br.defaultaction(lst, file);
(n, dir) := sys->stat(file.path);
if (n == -1 || dir.mode & sys->DMDIR)
break;
if ((len dir.name > 4 && dir.name[len dir.name - 4:] == ".dis") ||
dir.mode & 8r111)
spawn send(butchan, "run "+tkpath);
else if (dir.mode & 8r222)
spawn send(butchan, "write "+tkpath);
else if (dir.mode & 8r444)
spawn send(butchan, "open "+tkpath);
* =>
br.defaultaction(lst, nil);
}
if (!File.eq(selected, br.getselected(1)))
actionbutton(top, br.selected[1].file.path, br.selected[1].tkpath);
tkcmd(top, "update");
inp := <-butchan =>
(nil, lst) := sys->tokenize(inp, " \n\t");
case hd lst {
"refresh" =>
br.refresh();
"shell" =>
path = br.getselected(1).path;
if (path == nil)
sys->chdir(root);
else
sys->chdir(path);
sh->run(ctxt, "/dis/wm/sh.dis" :: nil);
"run" =>
spawn run(ctxt, br.getselected(1).path);
"read" =>
wtitle := tkcmd(top, hd tl lst+" cget text");
spawn openfile(ctxt, br.getselected(1).path, wtitle,0);
"write" =>
wtitle := tkcmd(top, hd tl lst+" cget text");
spawn openfile(ctxt, br.getselected(1).path, wtitle,1);
}
tkcmd(top, "update");
title = <-top.ctxt.ctl or
title = <-top.wreq or
title = <-titlebar =>
if (title == "exit" || title == "ok")
break main;
e := tkclient->wmctl(top, title);
if (e != nil && e[0] == '!')
br.resize();
}
}
if (title == "ok")
return br.getselected(1).path;
return "";
}
send(chanout: chan of string, s: string)
{
chanout <-= s;
}
resize(top: ref Tk->Toplevel, img: ref Draw->Image)
{
if (img != nil) {
scw := img.r.dx();
sch := img.r.dy();
ww := int tkcmd(top, ". cget -width");
wh := int tkcmd(top, ". cget -height");
if (ww > scw)
tkcmd(top, ". configure -x 0 -width "+string scw);
if (wh > sch)
tkcmd(top, ". configure -y 0 -height "+string sch);
}
}
mainscreen := array[] of {
"frame .f",
"frame .f.ftop",
"button .f.ftop.bs -text {Shell} -command {send butchan shell} -font /fonts/charon/bold.normal.font",
"button .f.ftop.br -text {Refresh} -command {send butchan refresh} -font /fonts/charon/bold.normal.font",
"grid .f.ftop.bs .f.ftop.br -row 0",
"grid columnconfigure .f.ftop 2 -minsize 30",
"grid .f.ftop -row 0 -column 0 -pady 2 -sticky w",
"label .f.l -text { } -height 1 -bg red",
"grid .f.l -row 1 -sticky ew",
"grid .fbrowse -in .f -row 2 -column 0 -sticky nsew",
"grid rowconfigure .f 2 -weight 1",
"grid columnconfigure .f 0 -weight 1",
"bind .Wm_t <Button-1> +{focus .Wm_t}",
"bind .Wm_t.title <Button-1> +{focus .Wm_t}",
"focus .Wm_t",
};
readpath(file: File): (array of ref sys->Dir, int)
{
(dirs, nil) := readdir->init(file.path, readdir->NAME | readdir->COMPACT);
return (dirs, 0);
}
run(ctxt: ref Draw->Context, file: string)
{
sys->pctl(sys->FORKNS | sys->NEWPGRP, nil);
sys->chdir(browser->prevpath(file));
sh->run(ctxt, file :: nil);
}
openscr := array[] of {
"frame .f",
"scrollbar .f.sy -command {.f.t yview}",
"text .f.t -yscrollcommand {.f.sy set} -bg white -font /fonts/charon/plain.normal.font",
"pack .f.sy -side left -fill y",
"pack .f.t -fill both -expand 1",
"bind .Wm_t <Button-1> +{focus .Wm_t}",
"bind .Wm_t.title <Button-1> +{focus .Wm_t}",
"focus .f.t",
};
fopensize := ("", "");
plumbing := array[] of {
("bit", "wm/view"),
("jpg", "wm/view"),
};
freader(top: ref Tk->Toplevel, fd: ref sys->FD, sync: chan of int)
{
sync <-= sys->pctl(0,nil);
buf := array[8192] of byte;
for (;;) {
i := sys->read(fd, buf, len buf);
if (i < 1)
return;
s :="";
for (j := 0; j < i; j++) {
c := int buf[j];
if (c == '{' || c == '}')
s[len s] = '\\';
s[len s] = c;
}
tk->cmd(top, ".f.t insert end {"+s+"}; update");
}
}
openfile(ctxt: ref draw->Context, file, title: string, writeable: int)
{
ext := getext(file);
plumb := getplumb(ext);
if (plumb != nil) {
sh->run(ctxt, plumb :: file :: nil);
return;
}
button := tkclient->Appl;
if (writeable)
button = button | tkclient->OK;
(top, titlebar) := tkclient->toplevel(ctxt, "", title, button);
tkcmds(top, openscr);
tkcmd(top,"pack .f -fill both -expand 1");
tkcmd(top,"pack propagate . 0");
(w,h) := fopensize;
if (w != "" && h != "")
tkcmd(top, ". configure -width "+w+" -height "+h);
killpid := -1;
fd := sys->open(file, sys->OREAD);
if (fd != nil) {
sync := chan of int;
spawn freader(top, fd, sync);
killpid = <-sync;
}
tkcmd(top, "update");
tkclient->onscreen(top, nil);
tkclient->startinput(top, "kbd"::"ptr"::nil);
main: for (;;) {
alt {
s := <-top.ctxt.kbd =>
tk->keyboard(top, s);
s := <-top.ctxt.ptr =>
tk->pointer(top, *s);
title = <-top.ctxt.ctl or
title = <-top.wreq or
title = <-titlebar =>
if (title == "exit" || title == "ok")
break main;
tkclient->wmctl(top, title);
}
}
if (killpid != -1)
kill(killpid);
fopensize = (tkcmd(top, ". cget -width"), tkcmd(top, ". cget -height"));
if (title == "ok") {
(n, dir) := sys->stat(file);
if (n != -1) {
fd = sys->create(file, sys->OWRITE, dir.mode);
if (fd != nil) {
s := tkcmd(top, ".f.t get 1.0 end");
sys->fprint(fd,"%s",s);
fd = nil;
}
}
}
}
badmod(path: string)
{
sys->print("FBrowse: failed to load: %s\n",path);
exit;
}
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]);
}
nactionbuttons := 0;
actionbutton(top: ref Tk->Toplevel, path, tkpath: string)
{
(n, dir) := sys->stat(path);
for (i := 0; i < nactionbuttons; i++) {
tkcmd(top, "grid forget .f.ftop.baction"+string i);
tkcmd(top, "destroy .f.ftop.baction"+string i);
}
if (path == nil || n == -1 || dir.mode & sys->DMDIR) {
nactionbuttons = 0;
return;
}
buttons : list of (string,string) = nil;
if (dir.mode & 8r222)
buttons = ("Open", "write "+tkpath) :: buttons;
else if (dir.mode & 8r444)
buttons = ("Open", "read "+tkpath) :: buttons;
if (len dir.name > 4 && dir.name[len dir.name - 4:] == ".dis" || dir.mode & 8r111)
buttons = ("Run", "run "+tkpath) :: buttons;
nactionbuttons = len buttons;
for (i = 0; i < nactionbuttons; i++) {
name := ".f.ftop.baction"+string i+" ";
(text,cmd) := hd buttons;
tkcmd(top, "button "+name+"-text {"+text+"} "+
"-font /fonts/charon/bold.normal.font "+
"-command {send butchan "+cmd+"}");
tkcmd(top, "grid "+name+" -row 0 -column "+string (4+i));
buttons = tl buttons;
}
}
getext(file: string): string
{
(nil, lst) := sys->tokenize(file, ".");
for (; tl lst != nil; lst = tl lst)
;
return hd lst;
}
getplumb(ext: string): string
{
for (i := 0; i < len plumbing; i++)
if (ext == plumbing[i].t0)
return plumbing[i].t1;
return nil;
}
kill(pid: int)
{
if ((fd := sys->open("/prog/" + string pid + "/ctl", Sys->OWRITE)) != nil)
sys->fprint(fd, "kill");
}