perl-install/mygtk2.pm


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package mygtk2;

use diagnostics;
use strict;
use feature 'state';

our @ISA = qw(Exporter);
our @EXPORT = qw(gtknew gtkset gtkadd gtkval_register gtkval_modify);

use c;
use log;
use common;

use Gtk2;

sub init() {
    !check_for_xserver() and print("Cannot be run in console mode.\n"), c::_exit(0);
    $::one_message_has_been_translated and warn("N() was called from $::one_message_has_been_translated BEFORE gtk2 initialisation, replace it with a N_() AND a translate() later.\n"), c::_exit(1);

    Gtk2->init;
    Locale::gettext::bind_textdomain_codeset($_, 'UTF8') foreach 'libDrakX', if_(!$::isInstall, 'libDrakX-standalone'),
        if_($::isRestore, 'draksnapshot'), if_($::isInstall, 'urpmi'),
        'drakx-net', 'drakx-kbd-mouse-x11', # shared translation
          @::textdomains;
    Glib->enable_exceptions2;
}
init() unless $::no_ugtk_init;
Glib->enable_exceptions2 if $::isInstall;


sub gtknew {
    my $class = shift;
    if (@_ % 2 != 0) {
	internal_error("gtknew $class: bad options @_");
    }
    if (my $r = find { ref $_->[0] } group_by2(@_)) {
	internal_error("gtknew $class: $r should be a string in @_");
    }
    my %opts = @_;
    _gtk(undef, $class, 'gtknew', \%opts);
}

sub gtkset {
    my $w = shift;
    my $class = ref($w);
    if (@_ % 2 != 0) {
	internal_error("gtkset $class: bad options @_");
    }
    if (my $r = find { ref $_->[0] } group_by2(@_)) {
	internal_error("gtkset $class: $r should be a string in @_");
    }
    my %opts = @_;

    $class =~ s/^(Gtk2|Gtk2::Gdk|mygtk2)::// or internal_error("gtkset unknown class $class");
    
    _gtk($w, $class, 'gtkset', \%opts);
}

sub gtkadd {
    my $w = shift;
    my $class = ref($w);
    if (@_ % 2 != 0) {
	internal_error("gtkadd $class: bad options @_");
    }
    if (my $r = find { ref $_->[0] } group_by2(@_)) {
	internal_error("gtkadd $class: $r should be a string in @_");
    }
    my %opts = @_;
    $class =~ s/^(Gtk2|Gtk2::Gdk|mygtk2)::// or internal_error("gtkadd unknown class $class");
    
    _gtk($w, $class, 'gtkadd', \%opts);
}


my %refs;

sub gtkval_register {
    my ($w, $ref, $sub) = @_;
    push @{$w->{_ref}}, $ref;
    $w->signal_connect(destroy => sub { 
	@{$refs{$ref}} = grep { $_->[1] != $w } @{$refs{$ref}};
	delete $refs{$ref} if !@{$refs{$ref}};
    });
    push @{$refs{$ref}}, [ $sub, $w ];
}
sub gtkval_modify {
    my ($ref, $val, @to_skip) = @_;
    my $prev = '' . $ref;
    $$ref = $val;
    if ($prev ne '' . $ref) {
	internal_error();
    }
    foreach (@{$refs{$ref} || []}) {	
	my ($f, @para) = @$_;
	$f->(@para) if !member($f, @to_skip);
    }
}

my $global_tooltips;

sub _gtk {
    my ($w, $class, $action, $opts) = @_;

    if (my $f = $mygtk2::{"_gtk__$class"}) {
	$w = $f->($w, $opts, $class, $action);
    } else {
	internal_error("$action $class: unknown class");
    }

    $w->set_size_request(delete $opts->{width} || -1, delete $opts->{height} || -1) if exists $opts->{width} || exists $opts->{height};
    if (my $position = delete $opts->{position}) {
	$w->move($position->[0], $position->[1]);
    }
    $w->set_name(delete $opts->{widget_name}) if exists $opts->{widget_name};
    $w->can_focus(delete $opts->{can_focus}) if exists $opts->{can_focus};
    $w->can_default(delete $opts->{can_default}) if exists $opts->{can_default};
    $w->grab_focus if delete $opts->{grab_focus};
    $w->set_padding(@{delete $opts->{padding}}) if exists $opts->{padding};
    $w->set_sensitive(delete $opts->{sensitive}) if exists $opts->{sensitive};
    $w->signal_connect(expose_event => delete $opts->{expose_event}) if exists $opts->{expose_event};
    $w->signal_connect(realize => delete $opts->{realize}) if exists $opts->{realize};
    (delete $opts->{size_group})->add_widget($w) if $opts->{size_group};
    if (my $tip = delete $opts->{tip}) {
	$global_tooltips ||= Gtk2::Tooltips->new;
	$global_tooltips->set_tip($w, $tip);
    }

    #- WARNING: hide_ref and show_ref are not effective until you gtkval_modify the ref
    if (my $hide_ref = delete $opts->{hide_ref}) {
	gtkval_register($w, $hide_ref, sub { $$hide_ref ? $w->hide : $w->show });
    } elsif (my $show_ref = delete $opts->{show_ref}) {
	gtkval_register($w, $show_ref, sub { $$show_ref ? $w->show : $w->hide });
    }

    if (my $sensitive_ref = delete $opts->{sensitive_ref}) {
	my $set = sub { $w->set_sensitive($$sensitive_ref) };
	gtkval_register($w, $sensitive_ref, $set);
	$set->();
    }

    if (%$opts && !$opts->{allow_unknown_options}) {
	internal_error("$action $class: unknown option(s) " . join(', ', keys %$opts));
    }
    $w;
}

sub _gtk__Install_Button {
    my ($w, $opts, $_class) = @_;
    $opts->{child} = gtknew('HBox', spacing => 5, 
                             children_tight => [
                                 # FIXME: not RTL compliant (lang::text_direction_rtl() ? ...)
                                 gtknew('Image', file => 'advanced_expander'),
                                 gtknew('Label', text => delete $opts->{text}),
                             ],
                         );
    $opts->{relief} = 'none';
    _gtk__Button($w, $opts, 'Button');
}

sub _gtk__Button       { &_gtk_any_Button }
sub _gtk__ToggleButton { &_gtk_any_Button }
sub _gtk__CheckButton  { &_gtk_any_Button }
sub _gtk__RadioButton  { &_gtk_any_Button }
sub _gtk_any_Button {
    my ($w, $opts, $class) = @_;

    if (!$w) {
        my @radio_options;
        if ($class eq 'RadioButton') {
            @radio_options = delete $opts->{group};
	}
	$w = $opts->{child} ? "Gtk2::$class"->new(@radio_options) :
	  delete $opts->{mnemonic} ? "Gtk2::$class"->new_with_mnemonic(@radio_options, delete $opts->{text} || '') :
	    $opts->{text} ? "Gtk2::$class"->new_with_label(@radio_options, delete $opts->{text} || '') :
           "Gtk2::$class"->new(@radio_options);

	$w->{format} = delete $opts->{format} if exists $opts->{format};
    }

    if (my $widget = delete $opts->{child}) {
	$w->add($widget);
	$widget->show;
    }
    $w->set_image(delete $opts->{image}) if exists $opts->{image};
    $w->set_relief(delete $opts->{relief}) if exists $opts->{relief};

    if (my $text_ref = delete $opts->{text_ref}) {
	my $set = sub {
	    eval { $w->set_label(may_apply($w->{format}, $$text_ref)) };
	};
	gtkval_register($w, $text_ref, $set);
	$set->();
    } elsif (exists $opts->{text}) {
	$w->set_label(delete $opts->{text});
    } elsif (exists $opts->{stock}) {
	$w->set_label(delete $opts->{stock});
	$w->set_use_stock(1);
    }

    if ($class eq 'Button') {
	$w->signal_connect(clicked => delete $opts->{clicked}) if exists $opts->{clicked};
    } else {
	if (my $active_ref = delete $opts->{active_ref}) {
	    my $set = sub { $w->set_active($$active_ref) };
	    $w->signal_connect(toggled => sub {
		gtkval_modify($active_ref, $w->get_active, $set);
	    });
	    gtkval_register($w, $active_ref, $set);
	    gtkval_register($w, $active_ref, delete $opts->{toggled}) if exists $opts->{toggled};
	    $set->();
	} else {
	    $w->set_active(delete $opts->{active}) if exists $opts->{active};
	    $w->signal_connect(toggled => delete $opts->{toggled}) if exists $opts->{toggled};
	}
    }
    $w;
}

sub _gtk__CheckMenuItem {
    my ($w, $opts, $class) = @_;

    if (!$w) {
	add2hash_($opts, { mnemonic => 1 });

	$w = $opts->{image} || !exists $opts->{text} ? "Gtk2::$class"->new :
	  delete $opts->{mnemonic} ? "Gtk2::$class"->new_with_label(delete $opts->{text}) :
	    "Gtk2::$class"->new_with_mnemonic(delete $opts->{text});
    }