--- rxvt-unicode/src/perl/tabbed	2006/01/20 15:47:55	1.8
+++ rxvt-unicode/src/perl/tabbed	2017/02/26 06:36:46	1.39
@@ -1,17 +1,53 @@
 #! perl
 
+#:META:RESOURCE:tabbar-fg:colour:tab bar foreground colour
+#:META:RESOURCE:tabbar-bg:colour:tab bar background colour
+#:META:RESOURCE:tab-fg:colour:tab foreground colour
+#:META:RESOURCE:tab-bg:colour:tab background colour
+
+=head1 NAME
+
+tabbed - tabbed interface to urxvt
+
+=head1 DESCRIPTION
+
+This transforms the terminal into a tabbar with additional terminals, that
+is, it implements what is commonly referred to as "tabbed terminal". The topmost line
+displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
+button per tab.
+
+Clicking a button will activate that tab. Pressing B<Shift-Left> and
+B<Shift-Right> will switch to the tab left or right of the current one,
+while B<Shift-Down> creates a new tab. Pressing B<Ctrl-Left> and
+B<Ctrl-Right> will renumber the current tab by moving it to the left or
+to the right.
+
+The tabbar itself can be configured similarly to a normal terminal, but
+with a resource class of C<URxvt.tabbed>. In addition, it supports the
+following four resources (shown with defaults):
+
+   URxvt.tabbed.tabbar-fg: <colour-index, default 3>
+   URxvt.tabbed.tabbar-bg: <colour-index, default 0>
+   URxvt.tabbed.tab-fg:    <colour-index, default 0>
+   URxvt.tabbed.tab-bg:    <colour-index, default 1>
+
+See I<COLOR AND GRAPHICS> in the urxvt(1) manpage for valid
+indices.
+
+=cut
+
 sub refresh {
    my ($self) = @_;
 
    my $ncol = $self->ncol;
 
    my $text = " " x $ncol;
-   my $rend = [(urxvt::DEFAULT_RSTYLE | urxvt::RS_RVid) x $ncol];
+   my $rend = [($self->{rs_tabbar}) x $ncol];
 
    my @ofs;
 
    substr $text, 0, 7, "[NEW] |";
-   @$rend[0 .. 5] = (urxvt::OVERLAY_RSTYLE) x 6;
+   @$rend[0 .. 5] = ($self->{rs_tab}) x 6;
    push @ofs, [0, 6, sub { $_[0]->new_tab }];
 
    my $ofs = 7;
@@ -20,11 +56,14 @@
    for my $tab (@{ $self->{tabs} }) {
       $idx++;
 
-      my $txt = " $idx ";
+      my $act = $tab->{activity} && $tab != $self->{cur}
+                ? "*" : " ";
+
+      my $txt = "$act$idx$act";
       my $len = length $txt;
 
       substr $text, $ofs, $len + 1, "$txt|";
-      @$rend[$ofs .. $ofs + $len - 1] = (urxvt::OVERLAY_RSTYLE) x $len
+      @$rend[$ofs .. $ofs + $len - 1] = ($self->{rs_tab}) x $len
          if $tab == $self->{cur};
 
       push @ofs, [ $ofs, $ofs + $len, sub { $_[0]->make_current ($tab) } ];
@@ -41,20 +80,21 @@
 }
 
 sub new_tab {
-   my ($self) = @_;
-
-   my $offset = $self->fheight;
+   my ($self, @argv) = @_;
 
    # save a backlink to us, make sure tabbed is inactive
    push @urxvt::TERM_INIT, sub {
       my ($term) = @_;
       $term->{parent} = $self;
 
-      $term->resource ($_->[0] => $_->[1])
-         for @{ $self->{resource} || [] };
+      for (0 .. urxvt::NUM_RESOURCES - 1) {
+         my $value = $self->{resource}[$_];
+
+         $term->resource ("+$_" => $value)
+            if defined $value;
+      }
 
       $term->resource (perl_ext_2 => $term->resource ("perl_ext_2") . ",-tabbed");
-      
    };
 
    push @urxvt::TERM_EXT, urxvt::ext::tabbed::tab::;
@@ -62,6 +102,7 @@
    my $term = new urxvt::term
       $self->env, $urxvt::RXVTNAME,
       -embed => $self->parent,
+      @argv,
    ;
 }
 
@@ -70,17 +111,38 @@
 
    my $tab = $self->{cur};
 
+   # this is an extremely dirty way to force a configurenotify, but who cares
+   $tab->XMoveResizeWindow (
+      $tab->parent,
+      0, $self->{tabheight} + 1,
+      $self->width, $self->height - $self->{tabheight}
+   );
    $tab->XMoveResizeWindow (
       $tab->parent,
       0, $self->{tabheight},
       $self->width, $self->height - $self->{tabheight}
    );
+}
+
+sub on_resize_all_windows {
+   my ($self, $width, $height) = @_;
+
+   1
+}
+
+sub copy_properties {
+   my ($self) = @_;
+   my $tab = $self->{cur};
 
    my $wm_normal_hints = $self->XInternAtom ("WM_NORMAL_HINTS");
 
+   my $current = delete $self->{current_properties};
+
+   # pass 1: copy over properties different or nonexisting
    for my $atom ($tab->XListProperties ($tab->parent)) {
       my ($type, $format, $items) = $self->XGetWindowProperty ($tab->parent, $atom);
 
+      # fix up size hints
       if ($atom == $wm_normal_hints) {
          my (@hints) = unpack "l!*", $items;
 
@@ -88,30 +150,86 @@
 
          $items = pack "l!*", @hints;
       }
-      $self->XChangeWindowProperty ($self->parent, $atom, $type, $format, $items);
+
+      my $cur = delete $current->{$atom};
+
+      # update if changed, we assume empty items and zero type and format will not happen
+      $self->XChangeProperty ($self->parent, $atom, $type, $format, $items)
+         if $cur->[0] != $type or $cur->[1] != $format or $cur->[2] ne $items;
+
+      $self->{current_properties}{$atom} = [$type, $format, $items];
    }
 
-   $self->refresh;
+   # pass 2, delete all extraneous properties
+   $self->XDeleteProperty ($self->parent, $_) for keys %$current;
 }
 
 sub make_current {
    my ($self, $tab) = @_;
 
    if (my $cur = $self->{cur}) {
+      delete $cur->{activity};
       $cur->XUnmapWindow ($cur->parent) if $cur->mapped;
       $cur->focus_out;
    }
-   
+
    $self->{cur} = $tab;
 
    $self->configure;
-   $tab->focus_in;
+   $self->copy_properties;
+
+   $tab->focus_out; # just in case, should be a nop
+   $tab->focus_in if $self->focus;
+
    $tab->XMapWindow ($tab->parent);
+   delete $tab->{activity};
    $self->refresh;
 
    ()
 }
 
+sub on_focus_in {
+   my ($self, $event) = @_;
+
+   $self->{cur}->focus_in;
+
+   ()
+}
+
+sub on_focus_out {
+   my ($self, $event) = @_;
+
+   $self->{cur}->focus_out;
+
+   ()
+}
+
+sub on_tt_write {
+    my ($self, $octets) = @_;
+
+    $self->{cur}->tt_write ($octets);
+
+    1
+}
+
+sub on_key_press {
+   my ($self, $event) = @_;
+
+   $self->{cur}->key_press ($event->{state}, $event->{keycode}, $event->{time});
+   $self->{cur}->refresh_check;
+
+   1
+}
+
+sub on_key_release {
+   my ($self, $event) = @_;
+
+   $self->{cur}->key_release ($event->{state}, $event->{keycode}, $event->{time});
+   $self->{cur}->refresh_check;
+
+   1
+}
+
 sub on_button_press {
    1
 }
@@ -137,19 +255,27 @@
 sub on_init {
    my ($self) = @_;
 
-   for (qw(name perl_ext_1 perl_ext_2)) {
-      my $val = $self->resource ($_);
-
-      push @{ $self->{resource} }, [$_ => $val]
-        if defined $val;
-   }
+   $self->{resource} = [map $self->resource ("+$_"), 0 .. urxvt::NUM_RESOURCES - 1];
 
    $self->resource (int_bwidth => 0);
-   $self->resource (name => "URxvt.tab");
+   $self->resource (name => "URxvt.tabbed");
    $self->resource (pty_fd => -1);
 
    $self->option ($urxvt::OPTION{scrollBar}, 0);
 
+   my $fg    = $self->x_resource ("tabbar-fg");
+   my $bg    = $self->x_resource ("tabbar-bg");
+   my $tabfg = $self->x_resource ("tab-fg");
+   my $tabbg = $self->x_resource ("tab-bg");
+
+   defined $fg    or $fg    = 3;
+   defined $bg    or $bg    = 0;
+   defined $tabfg or $tabfg = 0;
+   defined $tabbg or $tabbg = 1;
+
+   $self->{rs_tabbar} = urxvt::SET_COLOR (urxvt::DEFAULT_RSTYLE, $fg    + 2, $bg    + 2);
+   $self->{rs_tab}    = urxvt::SET_COLOR (urxvt::DEFAULT_RSTYLE, $tabfg + 2, $tabbg + 2);
+
    ()
 }
 
@@ -158,7 +284,15 @@
 
    $self->{tabheight} = $self->int_bwidth + $self->fheight + $self->lineSpace;
 
-   $self->new_tab;
+   $self->cmd_parse ("\033[?25l");
+
+   my @argv = $self->argv;
+
+   do {
+      shift @argv;
+   } while @argv && $argv[0] ne "-e";
+
+   $self->new_tab (@argv);
 
    ()
 }
@@ -167,6 +301,7 @@
    my ($self, $event) = @_;
 
    $self->configure;
+   $self->refresh;
 
    ()
 }
@@ -182,6 +317,8 @@
 sub tab_start {
    my ($self, $tab) = @_;
 
+   $tab->XChangeInput ($tab->parent, urxvt::PropertyChangeMask);
+
    push @{ $self->{tabs} }, $tab;
 
 #   $tab->{name} ||= scalar @{ $self->{tabs} };
@@ -213,29 +350,61 @@
 sub tab_key_press {
    my ($self, $tab, $event, $keysym, $str) = @_;
 
-   if ($event->{state} & urxvt::ShiftMask
-       && ($keysym == 0xff51 || $keysym == 0xff53)) {
-      my ($idx) = grep $self->{tabs}[$_] == $tab, 0 .. $#{ $self->{tabs} };
-
-      --$idx if $keysym == 0xff51;
-      ++$idx if $keysym == 0xff53;
-
-      $self->make_current ($self->{tabs}[$idx % @{ $self->{tabs}}]);
-      $self->refresh;
-      
-      return 1;
+   if ($event->{state} & urxvt::ShiftMask) {
+      if ($keysym == 0xff51 || $keysym == 0xff53) {
+         my ($idx) = grep $self->{tabs}[$_] == $tab, 0 .. $#{ $self->{tabs} };
+
+         --$idx if $keysym == 0xff51;
+         ++$idx if $keysym == 0xff53;
+
+         $self->make_current ($self->{tabs}[$idx % @{ $self->{tabs}}]);
+
+         return 1;
+      } elsif ($keysym == 0xff54) {
+         $self->new_tab;
+
+         return 1;
+      }
+   }
+   elsif ($event->{state} & urxvt::ControlMask) {
+      if ($keysym == 0xff51 || $keysym == 0xff53) {
+         my ($idx1) = grep $self->{tabs}[$_] == $tab, 0 .. $#{ $self->{tabs} };
+         my  $idx2  = ($idx1 + ($keysym == 0xff51 ? -1 : +1)) % @{ $self->{tabs} };
+
+         ($self->{tabs}[$idx1], $self->{tabs}[$idx2]) =
+            ($self->{tabs}[$idx2], $self->{tabs}[$idx1]);
+
+         $self->make_current ($self->{tabs}[$idx2]);
+
+         return 1;
+      }
    }
 
    ()
 }
 
+sub tab_property_notify {
+   my ($self, $tab, $event) = @_;
+
+   $self->copy_properties
+      if $event->{window} == $tab->parent;
+
+   ()
+}
+
+sub tab_activity {
+   my ($self, $tab) = @_;
+
+   $self->refresh;
+}
+
 package urxvt::ext::tabbed::tab;
 
 # helper extension implementing the subwindows of a tabbed terminal.
 # simply proxies all interesting calls back to the tabbed class.
 
 {
-   for my $hook qw(start destroy key_press) {
+   for my $hook (qw(start destroy key_press property_notify)) {
       eval qq{
          sub on_$hook {
             my \$parent = \$_[0]{term}{parent}
@@ -247,5 +416,10 @@
    }
 }
 
+sub on_add_lines {
+  $_[0]->{activity}++
+     or $_[0]{term}{parent}->tab_activity ($_[0]);
+  ()
+}