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implement Commandline;
include "sys.m";
sys: Sys;
include "draw.m";
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "commandline.m";
Debug: con 0;
nomodule(modpath: string)
{
sys->fprint(stderr(), "fibs: couldn't load %s: %r\n", modpath);
raise "fail:bad module";
}
init()
{ sys = load Sys Sys->PATH;
tk = load Tk Tk->PATH;
if (tk == nil) nomodule(Tk->PATH);
tkclient = load Tkclient Tkclient->PATH;
if (tkclient == nil) nomodule(Tkclient->PATH);
tkclient->init();
}
Cmdline.new(top: ref Tk->Toplevel, w, textopts: string): (ref Cmdline, chan of string)
{
window_cfg := array[] of {
"frame " + w,
"scrollbar " + w + ".scroll -command {" + w + ".t yview}",
"text " + w + ".t -yscrollcommand {" + w + ".scroll set} " + textopts,
"pack " + w + ".scroll -side left -fill y",
"pack " + w + ".t -fill both -expand 1",
"bind " + w + ".t <Key> {send evch k {%A}}",
"bind " + w + ".t <Control-d> {send evch k {%A}}",
"bind " + w + ".t <Control-u> {send evch k {%A}}",
"bind " + w + ".t <Control-w> {send evch k {%A}}",
"bind " + w + ".t <Control-h> {send evch k {%A}}",
# treat button 2 and button 3 the same so we're alright with a 2-button mouse
"bind " + w + ".t <ButtonPress-2> {send evch b %x %y}",
"bind " + w + ".t <ButtonPress-3> {send evch b %x %y}",
w + ".t mark set outpoint end",
w + ".t mark gravity outpoint left",
w + ".t mark set inpoint end",
w + ".t mark gravity inpoint left",
};
evch := chan of string;
tk->namechan(top, evch, "evch");
for (i := 0; i < len window_cfg; i++) {
e := cmd(top, window_cfg[i]);
if (e != nil && e[0] == '!')
break;
}
err := tk->cmd(top, "variable lasterror");
if (err != nil) {
sys->fprint(stderr(), "error in commandline config: %s\n", err);
raise "fail:commandline config error";
}
cmd(top, w + ".t mark set insert end;" + w + ".t see insert");
return (ref Cmdline(w, top), evch);
}
Cmdline.focus(cmdl: self ref Cmdline)
{
cmd(cmdl.top, "focus " + cmdl.w + ".t");
}
Cmdline.event(cmdl: self ref Cmdline, e: string): list of string
{
case e[0] {
'k' =>
return handle_key(cmdl, e[2:]);
'b' =>
;
}
return nil;
}
BS: con 8; # ^h backspace character
BSW: con 23; # ^w bacspace word
BSL: con 21; # ^u backspace line
handle_key(cmdl: ref Cmdline, c: string): list of string
{
(w, top) := (cmdl.w, cmdl.top);
# don't allow editing of the text before the inpoint.
if (int cmd(top, w + ".t compare insert < inpoint"))
return nil;
lines: list of string;
char := c[1];
if (char == '\\')
char = c[2];
case char {
* =>
cmd(top, w + ".t insert insert "+c+" {}");
'\n' =>
cmd(top, w + ".t insert insert "+c+" {}");
lines = sendinput(cmdl);
BSL or BSW or BS =>
delpoint: string;
case char {
BSL => delpoint = "{insert linestart}";
BSW => delpoint = "{insert -1char wordstart}"; # wordstart isn't ideal
BS => delpoint = "{insert-1char}";
}
if (int cmd(top, w + ".t compare inpoint < " + delpoint))
cmd(top, w + ".t delete "+delpoint+" insert");
else
cmd(top, w + ".t delete inpoint insert");
}
cmd(top, w + ".t see insert;update");
return lines;
}
sendinput(cmdl: ref Cmdline): list of string
{
(w, top) := (cmdl.w, cmdl.top);
# loop through all the lines that have been entered,
# processing each one in turn.
nl, lines: list of string;
for (;;) {
input: string;
input = cmd(top, w + ".t get inpoint end");
if (len input == 0)
break;
for (i := 0; i < len input; i++)
if (input[i] == '\n')
break;
if (i >= len input)
break;
cmd(top, w + ".t mark set outpoint inpoint+"+string (i+1)+"chars");
cmd(top, w + ".t mark set inpoint outpoint");
lines = input[0:i+1] :: lines;
}
for (; lines != nil; lines = tl lines)
nl = hd lines :: nl;
return nl;
}
add(cmdl: ref Cmdline, t: string, n: int)
{
(w, top) := (cmdl.w, cmdl.top);
cmd(top, w + ".t insert outpoint " + t);
cmd(top, w + ".t mark set outpoint outpoint+"+string n+"chars");
cmd(top, w + ".t mark set inpoint outpoint");
cmd(top, w + ".t see insert");
}
Cmdline.tagaddtext(cmdl: self ref Cmdline, t: list of (string, string))
{
txt := "";
n := 0;
for (; t != nil; t = tl t) {
(tags, s) := hd t;
txt += " " + tk->quote(s) + " {" + tags + "}";
n += len s;
}
add(cmdl, txt, n);
}
Cmdline.addtext(cmdl: self ref Cmdline, txt: string)
{
if (Debug) sys->print("%s", txt);
add(cmdl, tk->quote(txt) + " {}" , len txt);
}
Cmdline.maketag(cmdl: self ref Cmdline, name, options: string)
{
cmd(cmdl.top, cmdl.w + ".t tag configure " + name + " " + options);
}
stderr(): ref Sys->FD
{
return sys->fildes(2);
}
cmd(top: ref Tk->Toplevel, s: string): string
{
e := tk->cmd(top, s);
if (e != nil && e[0] == '!')
sys->fprint(stderr(), "cmd error on '%s': %s\n", s, e);
return e;
}
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