package interactive; # $Id: interactive.pm 247292 2008-10-01 15:23:37Z tv $ use diagnostics; use strict; #-###################################################################################### #- misc imports #-###################################################################################### use common; use do_pkgs; =head1 NAME interactive - a GUI layer with multiple backend (text console, Gtk+ GUI, web) =head1 SYNOPSYS B enables to write GUIes that will work everywhere: =head1 Functions =over 4 =item * text console implemented by L & L =item * web browser implemented by L =item * GUI implemented by L =back Interactive inherits from L and thus $in->do_pkgs will return an usable C object suitable for installing packages. =head1 Minimal example using interactive use lib qw(/usr/lib/libDrakX); use interactive; my $in = interactive->vnew; $in->ask_okcancel('title', 'question'); $in->exit; =head1 Backends heritate from this class and you'll get all made interactivity for same steps. for this you need to provide C which returns one string of arrayref where: =over 4 =item * B is the object =item * B is a string =item * B<messages> is an refarray of strings =item * B<default> is an optional string (default is in arrayref) =item * B<arrayref> is an arrayref of strings =item * B<arrayref>2 contains booleans telling the default state, =back =head1 Functions =over =cut #-###################################################################################### #- OO Stuff #-###################################################################################### our @ISA = qw(do_pkgs); sub new($) { my ($type) = @_; bless {}, ref($type) || $type; } sub vnew { my ($_type, $o_su, $o_icon) = @_; my $su = $o_su eq "su"; if ($ENV{INTERACTIVE_HTTP}) { require interactive::http; return interactive::http->new; } require c; if ($su) { $ENV{PATH} = "/sbin:/usr/sbin:$ENV{PATH}"; $su = '' if $::testing || $ENV{TESTING}; } require_root_capability() if $su; if (check_for_xserver()) { eval { require interactive::gtk }; if (!$@) { my $o = interactive::gtk->new; if ($o_icon && $o_icon ne 'default' && !$::isWizard) { $o->{icon} = $o_icon } else { undef $o->{icon} } return $o; } elsif ($::testing) { die; } } require interactive::curses; interactive::curses->new; } sub ok { N_("Ok") } sub cancel { N_("Cancel") } sub markup_parse { my ($s) = @_; my @l; my @attrs; while ($s) { if ($s =~ s!^<(\w+)(\s+[^>]*?)?>!!s) { push @attrs, [ $1, $2 ]; } elsif ($s =~ s!^</(\w+)>!!) { my $previous = pop @attrs; $previous->[0] eq $1 or return; } elsif ($s =~ s!^(&(amp|lt|gt);)!!) { push @l, [ $1, @attrs ]; } elsif ($s =~ s!^([^<>&]+)!!s) { push @l, [ $1, @attrs ]; } else { return; } } markup_simplify(\@l); \@l; } sub markup_simplify { my ($l) = @_; foreach (@$l) { my ($s, @attrs) = @$_; my %attrs = map { my ($tag, $attrs) = @$_; my $long = { b => { weight => "bold" }, i => { style => "italic" }, big => { size => 'larger' }, }->{$tag}; $long ? %$long : map { /^(.*?)=['"]?(.*?)['"]?$/ } split(' ', $attrs); } @attrs; $s = +{ '&' => '&', '<' => '<', '>' => '>' }->{$s} || $s; @$_ = ($s, if_(%attrs, \%attrs)); } } sub markup_remove { my ($s) = @_; if (my $l = markup_parse($s)) { join('', map { $_->[0] } @$l); } else { $s; } } #- drop markup as fallback sub adapt_markup { my ($_o, $s) = @_; markup_remove($s); } sub enter_console {} sub leave_console {} sub suspend {} sub resume {} sub end {} sub exit { if ($::isStandalone) { require standalone; standalone::exit($_[0]); } else { exit($_[0]); } } #-###################################################################################### #- Interactive functions #-###################################################################################### sub ask_warn { my ($o, $title, $message, $o_icon) = @_; ask_warn_($o, { title => $title, messages => $message, icon => $o_icon }); } sub ask_yesorno { my ($o, $title, $message, $b_def) = @_; ask_yesorno_($o, { title => $title, messages => $message }, $b_def); } sub ask_okcancel { my ($o, $title, $message, $b_def, $o_icon) = @_; ask_okcancel_($o, { title => $title, messages => $message, icon => $o_icon }, $b_def); } sub ask_warn_ { my ($o, $common) = @_; local $o->{modal} = $o->{modal} || $::isInstall; # make these popup at install time ask_from_listf_raw_no_check($o, $common, \&translate, [ $o->ok ]); } sub ask_yesorno_ { my ($o, $common, $b_def) = @_; $common->{cancel} = ''; ask_from_listf_raw($o, $common, \&translate, [ N_("Yes"), N_("No") ], $b_def ? "Yes" : "No") eq "Yes"; } sub ask_okcancel_ { my ($o, $common, $b_def) = @_; if ($::isWizard) { $common->{focus_cancel} = !$b_def; ask_from_no_check($o, $common, []); } else { ask_from_listf_raw($o, $common, \&translate, [ $o->ok, $o->cancel ], $b_def ? $o->ok : $o->cancel) eq $o->ok; } } sub ask_filename { my ($o, $common) = @_; $common->{want_a_dir} = 0; $o->ask_fileW($common); } sub ask_directory { my ($o, $common) = @_; $common->{want_a_dir} = 1; $o->ask_fileW($common); } #- predecated sub ask_file { my ($o, $title, $o_dir) = @_; $o->ask_fileW({ title => $title, want_a_dir => 0, directory => $o_dir }); } sub ask_fileW { my ($o, $common) = @_; $o->ask_from_entry($common->{title}, $common->{message} || N("Choose a file")); } =item ask_from_list($o, $title, $message, $l, $o_def) =item ask_from_list_($o, $title, $message, $l, $o_def) ask_from_list() and ask_from_list_() are wrappers around ask_from_biglist and ask_from_smalllist ask_from_list_() just translate arrayref before calling ask_from_list and untranslate the result ask_from_listW() should handle differently small lists and big ones. =cut sub ask_from_list { my ($o, $title, $message, $l, $o_def) = @_; ask_from_listf($o, $title, $message, undef, $l, $o_def); } sub ask_from_list_ { my ($o, $title, $message, $l, $o_def) = @_; ask_from_listf($o, $title, $message, \&translate, $l, $o_def); } sub ask_from_listf_ { my ($o, $title, $message, $f, $l, $o_def) = @_; ask_from_listf($o, $title, $message, sub { translate($f->(@_)) }, $l, $o_def); } sub ask_from_listf { my ($o, $title, $message, $f, $l, $o_def) = @_; ask_from_listf_raw($o, { title => $title, messages => $message }, $f, $l, $o_def); } sub ask_from_listf_raw { my ($_o, $_common, $_f, $l, $_o_def) = @_; @$l == 0 and die "ask_from_list: empty list\n" . backtrace(); @$l == 1 and return $l->[0]; goto &ask_from_listf_raw_no_check; } sub ask_from_listf_raw_no_check { my ($o, $common, $f, $l, $o_def) = @_; if (@$l <= ($::isWizard ? 1 : 2)) { my ($ok, $cancel) = map { $_ && may_apply($f, $_) } @$l; if (length "$ok$cancel" < 70) { my $ret = eval { put_in_hash($common, { ok => $ok, if_($cancel, cancel => $cancel, focus_cancel => $o_def eq $l->[1]) }); ask_from_no_check($o, $common, []) ? $l->[0] : $l->[1]; }; die if $@ && $@ !~ /^wizcancel/; return $@ ? undef : $ret; } } ask_from_no_check($o, $common, [ { val => \$o_def, type => 'list', list => $l, format => $f } ]) && $o_def; } sub ask_from_treelist { my ($o, $title, $message, $separator, $l, $o_def) = @_; ask_from_treelistf($o, $title, $message, $separator, undef, $l, $o_def); } sub ask_from_treelist_ { my ($o, $title, $message, $separator, $l, $o_def) = @_; my $transl = sub { join '|', map { translate($_) } split(quotemeta($separator), $_[0]) }; ask_from_treelistf($o, $title, $message, $separator, $transl, $l, $o_def); } sub ask_from_treelistf { my ($o, $title, $message, $separator, $f, $l, $o_def) = @_; ask_from($o, $title, $message, [ { val => \$o_def, separator => $separator, list => $l, format => $f, sort => 1 } ]) or return; $o_def; } sub ask_many_from_list { my ($o, $title, $message, @l) = @_; @l = grep { @{$_->{list}} } @l or return ''; foreach my $h (@l) { $h->{e}{$_} = { text => may_apply($h->{label}, $_), val => $h->{val} ? $h->{val}->($_) : do { my $i = $h->{value} ? $h->{value}->($_) : $h->{values} ? member($_, @{$h->{values}}) : 0; \$i; }, type => 'bool', help => may_apply($h->{help}, $_, ''), icon => may_apply($h->{icon2f}, $_, ''), } foreach @{$h->{list}}; if ($h->{sort}) { $h->{list} = [ sort { $h->{e}{$a}{text} cmp $h->{e}{$b}{text} } @{$h->{list}} ]; } } $o->ask_from($title, $message, [ map { my $h = $_; map { $h->{e}{$_} } @{$h->{list}} } @l ]) or return; @l = map { my $h = $_; [ grep { ${$h->{e}{$_}{val}} } @{$h->{list}} ]; } @l; wantarray() ? @l : $l[0]; } sub ask_from_entry { my ($o, $title, $message, %callback) = @_; first(ask_from_entries($o, $title, $message, [''], %callback)); } sub ask_from_entries { my ($o, $title, $message, $l, %callback) = @_; my @l = map { my $i = ''; { label => $_, val => \$i } } @$l; $o->ask_from_({ title => $title, messages => $message, %callback, focus_first => 1 }, \@l) or return; map { ${$_->{val}} } @l; } sub ask_from__add_modify_remove { my ($o, $title, $message, $l, %callback) = @_; die "ask_from__add_modify_remove only handles one item" if @$l != 1; $callback{$_} or internal_error("missing callback $_") foreach qw(Add Modify Remove); if ($o->can('ask_from__add_modify_removeW')) { $o->ask_from__add_modify_removeW($title, $message, $l, %callback); } else { my $e = $l->[0]; my $chosen_element; put_in_hash($e, { allow_empty_list => 1, val => \$chosen_element, type => 'list' }); while (1) { my $continue; my @l = (@$l, map { my $s = $_; { val => translate($_), clicked_may_quit => sub { my $r = $callback{$s}->($chosen_element); defined $r or return; $continue = 1; } } } N_("Add"), if_(@{$e->{list}} > 0, N_("Modify"), N_("Remove"))); $o->ask_from_({ title => $title, messages => $message, %callback }, \@l) or return; return 1 if !$continue; } } } #- can get a hash of callback: validate #- moreove if you pass a hash with a field list -> combo #- if you pass a hash with a field hidden -> emulate stty -echo sub ask_from { my ($o, $title, $message, $l, %callback) = @_; ask_from_($o, { title => $title, messages => $message, %callback }, $l); } sub _normalize_entry { my ($o, $e) = @_; if (my $li = $e->{list}) { ref($e->{val}) =~ /SCALAR|REF/ or internal_error($e->{val} ? "field {val} must be a reference (it is $e->{val})" : "field {val} is mandatory"); #-# if ($e->{sort} || @$li > 10 && !exists $e->{sort}) { my @l2 = map { may_apply($e->{format}, $_) } @$li; my @places = sort { $l2[$a] cmp $l2[$b] } 0 .. $#l2; $e->{list} = $li = [ map { $li->[$_] } @places ]; } $e->{type} = 'iconlist' if $e->{icon2f}; $e->{type} = 'treelist' if $e->{separator} && $e->{type} ne 'combo'; add2hash_($e, { not_edit => 1 }); $e->{type} ||= 'combo'; if (!$e->{not_edit}) { die q(when using "not_edit" you must use strings, not a data structure) if ref(${$e->{val}}) || any { ref $_ } @$li; } if ($e->{type} ne 'combo' || $e->{not_edit}) { ${$e->{val}} = $li->[0] if !member(may_apply($e->{format}, ${$e->{val}}), map { may_apply($e->{format}, $_) } @$li); } } elsif ($e->{type} eq 'range') { $e->{min} <= $e->{max} or die "bad range min $e->{min} > max $e->{max} (called from " . join(':', caller()) . ")"; ${$e->{val}} = max($e->{min}, min(${$e->{val}}, $e->{max})); } elsif ($e->{type} eq 'button' || $e->{clicked} || $e->{clicked_may_quit}) { $e->{type} = 'button'; $e->{clicked_may_quit} ||= $e->{clicked} ? sub { $e->{clicked}(); 0 } : sub {}; $e->{val} = \ (my $_v = $e->{val}) if !ref($e->{val}); } elsif (!$e->{type} && !$e->{val}) { $e->{type} = 'only_label'; $e->{val} = \ (my $_v = $o->adapt_markup(delete $e->{label})); } elsif ($e->{type} eq 'label' || !ref($e->{val})) { $e->{type} = 'label'; $e->{val} = \ (my $_v = $e->{val}) if !ref($e->{val}); } elsif ($e->{type} eq 'expander') { _normalize_entries($o, $e->{children}); } else { $e->{type} ||= 'entry'; } $e->{label} = $o->adapt_markup($e->{label}) if $e->{label}; } sub _normalize_entries { my ($o, $l) = @_; ref($l) eq 'ARRAY' or internal_error('ask_from_normalize'); _normalize_entry($o, $_) foreach @$l; #- do not display empty lists and one element lists @$l = grep { if ($_->{list} && $_->{not_edit} && !$_->{allow_empty_list}) { if (!@{$_->{list}}) { eval { require 'log.pm'; #- "require log" causes some pb, perl thinking that "log" is the log() function log::l("ask_from_normalize: empty list for $_->{label}\n" . backtrace()); }; } @{$_->{list}} > 1; } else { 1; } } @$l; } sub ask_from_normalize { my ($o, $common, $l) = @_; if ($common->{focus_first}) { if (my $e = find { $_->{val} } @$l) { $e->{focus} = sub { 1 }; } } _normalize_entries($o, $l); if (!$common->{title} && $::isStandalone) { ($common->{title} = $0) =~ s|.*/||; } $common->{interactive_help} ||= $o->{interactive_help}; $common->{interactive_help} ||= $common->{interactive_help_id} && $o->interactive_help_sub_get_id($common->{interactive_help_id}); if (!$::isInstall) { delete $common->{$_} foreach qw(interactive_help interactive_help_id); } $common->{advanced_label} ||= N("Advanced"); $common->{advanced_label_close} and log::l("advanced_label_close is not used anymore"); $common->{$_} = $common->{$_} ? [ map { $o->adapt_markup($_) } deref($common->{$_}) ] : [] foreach qw(messages advanced_messages); if ($common->{callbacks}) { $common->{callbacks}{changed} and internal_error(q(global "changed" callback is not handled anymore, use a per-entry changed callback)); $common->{callbacks}{focus_out} and internal_error(q(global "focus_out" callback is not handled anymore, use a per-entry focus_out callback)); add2hash($common, delete $common->{callbacks}); } if (my $complete = delete $common->{complete}) { $common->{validate} = sub { !first($complete->()) }; } add2hash_($common, { validate => sub { 1 } }); } sub migrate_advanced { my ($common, $l) = @_; my ($l1, $l2) = partition { !$_->{advanced} } @$l; my $advanced_message = join("\n", @{$common->{advanced_messages}}); [ @$l1, if_(@$l2, { type => 'expander', if_($advanced_message, message => $advanced_message), text => $common->{advanced_label}, expanded => $common->{advanced_state}, children => $l2, }) ]; } =item ask_from_($o, $common, $l) ask_from_() takes global options ($common): =over 4 =item * B<title>: window title =item * B<messages>: message displayed in the upper part of the window =item * B<ok>: force the name of the "Ok"/"Next" button =item * B<cancel>: force the name of the "Cancel"/"Previous" button =item * B<focus_cancel>: force focus on the "Cancel" button =item * I<focus_first>: (deprecated) force focus on the first entry =item * B<ok_disabled>: function returning whether {ok} should be disabled (grayed) =item * B<validate>: function called when {ok} is pressed. If it returns false, the first entry is focused, otherwise it quits =item * I<advanced>: (deprecated) function called when the "advanced" expander is toggled =item * I<advanced_messages>: (deprecated) message displayed when "Advanced" is pressed =item * I<advanced_label>: (deprecated) force the name of the "Advanced" button =item * I<advanced_label_close>: (deprecated) force the name of the "Basic" button =item * I<advanced_state>: (deprecated) if set to 1, force the "Advanced" part of the dialog to be opened initially =item * I<advanced_title>: title of the advanced item popup dialog (else reusing main title) =item * I<callbacks>: (deprecated) functions called when something happen: complete advanced ok_disabled =back ask_from_ takes a list of entries with fields: =over 4 =item * B<val>: reference to the value =item * B<label>: description =item * B<title>: a boolean: whether the label should be displayed as a title (see GNOME's HIG) =item * B<icon>: icon to put before the description =item * B<help>: tooltip =item * I<advanced>: (deprecated) whether it is shown in by default or only in advanced mode =item * B<focus_out>: function called when the entry is focused out =item * B<changed>: function called when the entry is modified =item * B<validate>: function called when "Ok" is pressed. If it returns false, this entry is focused, otherwise it quits =item * B<disabled>: function returning whether it should be disabled (grayed) =item * B<focus>: function returning whether it should be focused =item * B<alignment>: preferred alignment =item * B<do_not_expand>: do not eat all horizontal space =item * B<install_button>: if possible, use improved graphical style =item * B<gtk>: gtk preferences =item * B<type>: =over 4 =item * B<button>: (with clicked or clicked_may_quit) I<type> defaults to button if clicked or clicked_may_quit is there. I<val> need not be a reference. If I<clicked_may_quit> return true, it's as if "Ok" was pressed. =item * B<label>: I<val> need not be a reference. I<type> defaults to label if val is not a reference. =item * B<bool>: (with "text" or "image" (which overrides text) giving an image filename) =item * B<range>: (with min, max, SpinButton) =item * B<combo>: (with list, not_edit, format) =item * B<list>: (with list, icon2f (aka icon), separator (aka tree), format (aka pre_format function), It has these optional parameters: =over 4 =item * B<help>: can be a hash or a function, =item * B<tree_expanded>: boolean telling whether the tree should be wide open by default =item * B<quit_if_double_click>: boolean =item * B<allow_empty_list>: disables the special cases for 0 and 1 element lists =item * B<image2f>: a subroutine which takes a value of the list as parameter, and returns image_file_name =back =item * B<entry>: (the default) (with hidden) =item * B<expander>: (with text, expanded, message, children(a list of sub entries)) =back =back =cut sub ask_from_ { my ($o, $common, $l) = @_; ask_from_normalize($o, $common, $l); @$l or return 1; $common->{cancel} = '' if !defined wantarray(); ask_from_real($o, $common, $l); } sub ask_from_no_check { my ($o, $common, $l) = @_; ask_from_normalize($o, $common, $l); $common->{cancel} = '' if !defined wantarray(); my $l_ = migrate_advanced($common, $l); $o->ask_fromW($common, $l_); } sub ask_from_real { my ($o, $common, $l) = @_; my $l_ = migrate_advanced($common, $l); my $v = $o->ask_fromW($common, $l_); foreach my $e (@$l) { if ($e->{type} eq 'range') { ${$e->{val}} = max($e->{min}, min(${$e->{val}}, $e->{max})); } } %$common = (); $v; } sub ask_browse_tree_info { my ($o, $title, $message, $common) = @_; $common->{interactive_help} ||= $common->{interactive_help_id} && $o->interactive_help_sub_get_id($common->{interactive_help_id}); add2hash_($common, { ok => $::isWizard ? ($::Wizard_finished ? N("Finish") : N("Next")) : N("Ok"), cancel => $::isWizard ? N("Previous") : N("Cancel") }); add2hash_($common, { title => $title, message => $message }); add2hash_($common, { grep_allowed_to_toggle => sub { @_ }, grep_unselected => sub { grep { $common->{node_state}($_) eq 'unselected' } @_ }, check_interactive_to_toggle => sub { 1 }, toggle_nodes => sub { my ($set_state, @nodes) = @_; my $new_state = !$common->{grep_unselected}($nodes[0]) ? 'selected' : 'unselected'; $set_state->($_, $new_state) foreach @nodes; }, }); $o->ask_browse_tree_info_refW($common); } sub ask_browse_tree_info_refW { #- default definition, do not use with too many items (memory consuming) my ($o, $common) = @_; my ($l, $v, $h) = ([], [], {}); $common->{build_tree}(sub { my ($node) = $common->{grep_allowed_to_toggle}(@_); if (my $state = $node && $common->{node_state}($node)) { push @$l, $node; $state eq 'selected' and push @$v, $node; $h->{$node} = $state eq 'selected'; } }, 'flat'); add2hash_($common, { list => $l, #- TODO interactivity of toggle is missing values => $v, help => sub { $common->{get_info}($_[0]) }, }); my ($new_v) = $o->ask_many_from_list($common->{title}, $common->{message}, $common) or return; $common->{toggle_nodes}(sub {}, grep { ! delete $h->{$_} } @$new_v); $common->{toggle_nodes}(sub {}, grep { $h->{$_} } keys %$h); 1; } sub wait_message { my ($o, $title, $message, $b_temp) = @_; my $inline_title = $::isInstall ? $title : ''; $inline_title ||= N("Please wait"); my $w = $o->wait_messageW($title, $inline_title, $message); push @tempory::objects, $w if $b_temp; my $b = before_leaving { $o->wait_message_endW($w) }; #- enable access through set MDK::Common::Func::add_f4before_leaving(sub { $o->wait_message_nextW($_[1], $w) }, $b, 'set'); $b; } sub wait_message_with_progress_bar { my ($in, $o_title) = @_; my $w = $in->wait_message($o_title, ''); my $last_msg; $w, sub { my ($msg, $current, $total) = @_; if ($msg) { $w->set($last_msg = $msg); } if ($total) { $w or internal_error('You must first give some text to display'); $w->set(join("\n", $last_msg, "$current / $total")); } }; } sub kill() {} sub helper_separator_tree_to_tree { my ($separator, $list, $formatted_list) = @_; my $sep = quotemeta $separator; my $tree = {}; each_index { my @l = split $sep; my $leaf = pop @l; my $node = $tree; foreach (@l) { $node = $node->{$_} ||= do { my $r = {}; push @{$node->{_order_}}, $_; $r; }; } push @{$node->{_leaves_}}, [ $leaf, $list->[$::i] ]; (); } @$formatted_list; $tree; } sub interactive_help_sub_get_id { my ($o, $id) = @_; eval { $o->is_help_file_exist($id) } && sub { $o->interactive_help_get_id($id) }; } sub interactive_help_sub_display_id { my ($o, $id) = @_; eval { $o->interactive_help_has_id($id) } && sub { $o->ask_warn(N("Help"), $o->interactive_help_get_id($id)) }; } =back =cut 1;