Gestionnaire de fichiers - Editer - /usr/share/doc/perl-Curses-UI-0.9609/examples/demo-widgets
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#!/usr/bin/perl -w use strict; use File::Temp qw( :POSIX ); use lib "../lib"; # make KEY_BTAB (shift-tab) working in XTerm # and also at the same time enable colors #$ENV{TERM} = "xterm-vt220" if ($ENV{TERM} eq 'xterm'); my $debug = 0; if (@ARGV and $ARGV[0] eq '-d') { my $fh = tmpfile(); open STDERR, ">&fh"; $debug = 1; } else { # We do not want STDERR to clutter our screen. my $fh = tmpfile(); open STDERR, ">&fh"; } use FindBin; use lib "$FindBin::RealBin/../lib"; use Curses::UI; # Create the root object. my $cui = new Curses::UI ( -clear_on_exit => 1, -debug => $debug, ); # Demo index my $current_demo = 1; # Demo windows my %w = (); # ---------------------------------------------------------------------- # Create a menu # ---------------------------------------------------------------------- sub select_demo($;) { my $nr = shift; $current_demo = $nr; $w{$current_demo}->focus; } my $file_menu = [ { -label => 'Quit program', -value => sub {exit(0)} }, ], my $widget_demo_menu = [ { -label => 'Label', -value => sub{select_demo(1)} }, { -label => 'Buttons', -value => sub{select_demo(2)} }, { -label => 'Checkbox', -value => sub{select_demo(3)} }, { -label => 'Texteditor', -value => sub{select_demo(4)} }, { -label => 'Listbox', -value => sub{select_demo(5)} }, { -label => 'Popupmenu', -value => sub{select_demo(6)} }, { -label => 'Progressbar', -value => sub{select_demo(7)} }, { -label => 'Calendar', -value => sub{select_demo(8)} }, ]; my $dialog_demo_menu = [ { -label => 'Basic dialog', -value => sub{select_demo(9)} }, { -label => 'Error dialog', -value => sub{select_demo(10)} }, { -label => 'Filebrowser dialog', -value => sub{select_demo(11)} }, { -label => 'Progress dialog', -value => sub{select_demo(12)} }, { -label => 'Status dialog', -value => sub{select_demo(13)} }, { -label => 'Calendar dialog', -value => sub{select_demo(14)} }, { -label => 'Question dialog', -value => sub{select_demo(15)} }, ]; my $demo_menu = [ { -label => 'Widget demos', -submenu => $widget_demo_menu }, { -label => 'Dialog demos', -submenu => $dialog_demo_menu }, { -label => '------------', -value => sub{} }, { -label => 'Next demo', -value => \&goto_next_demo }, { -label => 'Previous demo', -value => \&goto_prev_demo }, ]; my $menu = [ { -label => 'File', -submenu => $file_menu }, { -label => 'Select demo', -submenu => $demo_menu }, ]; $cui->add('menu', 'Menubar', -menu => $menu); # ---------------------------------------------------------------------- # Create the explanation window # ---------------------------------------------------------------------- my $w0 = $cui->add( 'w0', 'Window', -border => 1, -y => -1, -height => 3, ); $w0->add('explain', 'Label', -text => "CTRL+P: previous demo CTRL+N: next demo " . "CTRL+X: menu CTRL+Q: quit" ); # ---------------------------------------------------------------------- # Create the demo windows # ---------------------------------------------------------------------- my %screens = ( '1' => 'Label', '2' => 'Buttons', '3' => 'Checkbox', '4' => 'Texteditor', '5' => 'Listbox', '6' => 'Popupmenu', '7' => 'Progressbar', '8' => 'Calendar', '9' => 'Basic dialog', '10' => 'Error dialog', '11' => 'Filebrowser dialog', '12' => 'Progress dialog', '13' => 'Status dialog', '14' => 'Calendar dialog', '15' => 'Question dialog', ); my @screens = sort {$a<=>$b} keys %screens; my %args = ( -border => 1, -titlereverse => 0, -padtop => 2, -padbottom => 3, -ipad => 1, ); while (my ($nr, $title) = each %screens) { my $id = "window_$nr"; $w{$nr} = $cui->add( $id, 'Window', -title => "Curses::UI demo: $title ($nr/" . @screens . ")", %args ); } # ---------------------------------------------------------------------- # Label demo # ---------------------------------------------------------------------- $w{1}->add( undef, 'Label', -text => "A label is a widget which can be used to display\n" . "a piece of text. This text can be formatted. The\n" . "supported formats are shown below. It depends upon\n" . "your terminal if all formats are shown correctly." ); $w{1}->add(undef,'Label',-text=>"dim font",-y=>5,-dim=>1 ); $w{1}->add(undef,'Label',-text=>"bold font",-y=>7,-bold=>1 ); $w{1}->add(undef,'Label',-text=>"reversed font",-y=>9,-reverse => 1 ); $w{1}->add(undef,'Label',-text=>"underlined font",-x=>15,-y=>5,-underline=>1 ); $w{1}->add(undef,'Label',-text=>"blinking font",-x=>15,-y=>7,-blink=>1 ); # ---------------------------------------------------------------------- # Buttons demo # ---------------------------------------------------------------------- $w{2}->add( undef, 'Label', -text => "The buttons widget displays an array of buttons.\n" . "As you would have guessed, these buttons can be pressed.\n" . "Select a button using <TAB>, the arrow keys or <H> and <L>\n" . "and press a button using the <SPACE> or <ENTER> key." ); $w{2}->add( 'buttonlabel', 'Label', -y => 7, -width => -1, -bold => 1, -text => "Press a button please...", ); sub button_callback($;) { my $this = shift; my $label = $this->parent->getobj('buttonlabel'); $label->text("You pressed: " . $this->get); } $w{2}->add( undef, 'Buttonbox', -y => 5, -buttons => [ { -label => "< Button 1 >", -value => "the first button", -onpress => \&button_callback, },{ -label => "< Button 2 >", -value => "the second button", -onpress => \&button_callback, },{ -label => "< Button 3 >", -value => "the third button", -onpress => \&button_callback, }, ], ); # ---------------------------------------------------------------------- # Checkbox demo # ---------------------------------------------------------------------- $w{3}->add( undef, 'Label', -text => "The checkbox can be used for selecting a true or false\n" . "value. If the checkbox is checked (a 'X' is inside it)\n" . "the value is true. <SPACE> and <ENTER> will toggle the\n" . "state of the checkbox, <Y> will check it and <N> will\n" . "uncheck it." ); my $cb_no = "The checkbox says: I don't like it :-("; my $cb_yes = "The checkbox says: I do like it! :-)"; $w{3}->add( 'checkboxlabel', 'Label', -y => 8, -width => -1, -bold => 1, -text => "Check the checkbox please...", ); $w{3}->add( undef, 'Checkbox', -y => 6, -checked => 0, -label => 'I like this Curses::UI demo so far!', -onchange => sub { my $cb = shift; my $label = $cb->parent->getobj('checkboxlabel'); $label->text($cb->get ? $cb_yes : $cb_no); }, ); # ---------------------------------------------------------------------- # Texteditor demo # ---------------------------------------------------------------------- $w{4}->add( undef, 'Label', -text => "The texteditor can be used for entering lines or blocks\n" . "of text. It also can be used in read-only mode as a\n" . "textviewer. Below you see some of the possibilities that\n" . "the texteditor widget offers." ); $w{4}->add( 'te1', 'TextEditor', -title => 'not wrapping', -y => 5, -width => 20, -border => 1, -padbottom => 4, -vscrollbar => 1, -hscrollbar => 1, -onChange => sub { my $te1 = shift; my $te2 = $te1->parent->getobj('te2'); my $te3 = $te1->parent->getobj('te3'); $te2->text($te1->get); $te3->text($te1->get); $te2->pos($te1->pos); }, ); $w{4}->add( 'te2', 'TextEditor', -title => 'wrapping', -y => 5, -x => 21, -width => 20, -border => 1, -padbottom => 4, -vscrollbar => 1, -hscrollbar => 1, -wrapping => 1, -onChange => sub { my $te2 = shift; my $te1 = $te2->parent->getobj('te1'); my $te3 = $te2->parent->getobj('te3'); $te1->text($te2->get); $te3->text($te2->get); $te1->pos($te2->pos); }, ); $w{4}->add( 'te3', 'TextViewer', -y => 5, -x => 42, -width => 20, -border => 1, -padbottom => 4, -title => "Read only", -vscrollbar => 1, -hscrollbar => 1, ); $w{4}->add( undef, 'Label', -y => -3, -text => "Single line entry:", -width => 20, ); $w{4}->add( undef, 'TextEntry', -sbborder => 1, -y => -3, -x => 21, -width => 20, ); $w{4}->add( undef, 'Label', -y => -1, -text => "Password entry:", -width => 20, ); $w{4}->add( undef, 'PasswordEntry', -sbborder => 1, -y => -1, -x => 21, -width => 20, ); # ---------------------------------------------------------------------- # Listbox demo # ---------------------------------------------------------------------- my $values = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]; my $labels = { 1 => 'One', 2 => 'Two', 3 => 'Three', 4 => 'Four', 5 => 'Five', 6 => 'Six', 7 => 'Seven', 8 => 'Eight', 9 => 'Nine', 10 => 'Ten', }; $w{5}->add( undef, 'Label', -text => "The listbox can be used for selecting on or more options\n" . "out of a predefined list of options. <SPACE> and <ENTER> will\n" . "change the current selected option for a normal listbox and a\n" . "radiobuttonbox, They will toggle the state of the active option in\n" . "a multi-select listbox. In a multi-select listbox you can also\n" . "use <Y> and <N> to check or uncheck options. Press </> for a\n" . "'less'-like search through the list." ); sub listbox_callback() { my $listbox = shift; my $label = $listbox->parent->getobj('listboxlabel'); my @sel = $listbox->get; @sel = ('<none>') unless @sel; my $sel = "selected: " . join (", ", @sel); $label->text($listbox->title . " $sel"); } $w{5}->add( undef, 'Listbox', -y => 8, -padbottom => 2, -values => $values, -labels => $labels, -width => 20, -border => 1, -title => 'Listbox', -vscrollbar => 1, -onchange => \&listbox_callback, ); $w{5}->add( undef, 'Listbox', -y => 8, -padbottom => 2, -x => 21, -values => $values, -labels => $labels, -width => 20, -border => 1, -multi => 1, -title => 'Multi-select', -vscrollbar => 1, -onchange => \&listbox_callback, ); $w{5}->add( undef, 'Radiobuttonbox', -y => 8, -padbottom => 2, -x => 42, -values => $values, -labels => $labels, -width => 20, -border => 1, -title => 'Radiobuttonbox', -vscrollbar => 1, -onchange => \&listbox_callback, ); $w{5}->add( 'listboxlabel', 'Label', -y => -1, -bold => 1, -text => "Select any option in one of the listboxes please....", -width => -1, ); # ---------------------------------------------------------------------- # Popupmenu # ---------------------------------------------------------------------- $w{6}->add( undef, 'Label', -text => "The popmenu is much like a standard listbox. The difference is\n" . "that only the currently selected value is visible (or ---- if\n" . "no value is yet selected). The list of possible values will be\n" . "shown as a separate popup windows if requested.\n" . "Press <ENTER> or <CURSOR-RIGHT> to open the popupbox and use\n" . "those same keys to select a value (or use <CURSOR-LEFT> to close\n" . "the popup listbox without selecting a value from it). Press\n" . "</> in the popup for a 'less'-like search through the list." ); $w{6}->add( undef, 'Popupmenu', -y => 9, -values => $values, -labels => $labels, -width => 20, -onchange => sub { my $pm = shift; my $lbl = $pm->parent->getobj('popupmenulabel'); my $val = $pm->get; $val = "<undef>" unless defined $val; my $lab = $pm->{-labels}->{$val}; $val .= " (label = '$lab')" if defined $lab; $lbl->text($val); $lbl->draw; }, ); $w{6}->add( undef, 'Label', -y => 9, -x => 21, -text => "--- selected --->" ); $w{6}->add( 'popupmenulabel', 'Label', -y => 9, -x => 39, -width => -1, -bold => 1, -text => "none" ); # ---------------------------------------------------------------------- # Progressbar # ---------------------------------------------------------------------- $w{7}->add( 'progressbarlabel', 'Label', -x => -1, -y => 3, -width => 10, -border => 1, -text => "the time" ); $w{7}->add( undef, 'Label', -text => "The progressbar can be used to provide some progress information\n" . "to the user of a program. Progressbars can be drawn in several\n" . "ways (see below for a couple of examples). In this example, I\n" . "just built a kind of clock (the values for the bars are \n" . "depending upon the current time)." ); $w{7}->add( undef, "Label", -y => 7, -text => "Showing value"); $w{7}->add( 'p1', 'Progressbar', -max => 24, -x => 15, -y => 6, -showvalue => 1 ); $w{7}->add( undef, "Label", -y => 10, -text => "No centerline"); $w{7}->add( 'p2', 'Progressbar', -max => 60, -x => 15, -y => 9, -nocenterline => 1 ); $w{7}->add( undef, "Label", -y => 13, -text => "No percentage"); $w{7}->add( 'p3', 'Progressbar', -max => 60, -x => 15, -y => 12, -nopercentage => 1 ); sub progressbar_timer_callback($;) { my $cui = shift; my @l = localtime; $w{7}->getobj('p1')->pos($l[2]); $w{7}->getobj('p2')->pos($l[1]); $w{7}->getobj('p3')->pos($l[0]); $w{7}->getobj('progressbarlabel')->text( sprintf("%02d:%02d:%02d", @l[2,1,0]) ); } $cui->set_timer( 'progressbar_demo', \&progressbar_timer_callback, 1 ); $cui->disable_timer('progressbar_demo'); $w{7}->onFocus( sub{$cui->enable_timer ('progressbar_demo')} ); $w{7}->onBlur( sub{$cui->disable_timer ('progressbar_demo')} ); # ---------------------------------------------------------------------- # Calendar # ---------------------------------------------------------------------- $w{8}->add( undef, 'Label', -text => "The calendar can be used to select a date, somewhere between\n" . "the years 0 and 9999. It honours the transition from the\n" . "Julian- to the Gregorian calender in 1752." ); $w{8}->add( undef, 'Label', -y => 5, -x => 27, -text => "Use your cursor keys (or <H>, <J>, <K> and <L>)\n" . "to walk through the calender. Press <ENTER>\n" . "or <SPACE> to select a date. Press <SHIFT+J> to\n" . "go one month forward and <SHIFT+K> to go one\n" . "month backward. Press <SHIFT+L> or <N> to go one\n" . "year forward and <SHIFT+H> or <P> to go one year\n" . "backward. Press <T> to go to today's date. Press\n" . "<C> to go to the currently selected date." ); $w{8}->add( 'calendarlabel', 'Label', -y => 14, -x => 27, -bold => 1, -width => -1, -text => 'Select a date please...' ); $w{8}->add( 'calendar', 'Calendar', -y => 4, -x => 0, -border => 1, -onchange => sub { my $cal = shift; my $label = $cal->parent->getobj('calendarlabel'); $label->text("You selected the date: " . $cal->get); }, ); # ---------------------------------------------------------------------- # Dialog::Basic # ---------------------------------------------------------------------- $w{9}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The basic dialog is one of them. It consists of a dialog\n" . "showing a message and one or more buttons. Press the\n" . "buttons to see some examples of this." ); $w{9}->add( undef, 'Buttonbox', -y => 7, -buttons => [ { -label => "< Example 1 >", -onpress => sub { shift()->root->dialog("As basic as it gets") } },{ -label => "< Example 2 >", -onpress => sub { shift()->root->dialog( -message => "Basic, but carrying a\n" . "title this time.", -title => 'Dialog::Basic demo', ); } },{ -label => "< Example 3 >", -onpress => sub { my $b = shift(); my $value = $b->root->dialog( -message => "Basic, but carrying a\n" . "title and multiple buttons.", -buttons => ['ok','cancel', 'yes', 'no'], -title => 'Dialog::Basic demo', ); $b->root->dialog( -message => "The value for that\n" . "button was: $value", -title => "Value?" ); } } ], ); # ---------------------------------------------------------------------- # Dialog::Error # ---------------------------------------------------------------------- $w{10}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The Error dialog is one of them. It consists of a dialog\n" . "showing an errormessage, an ASCII art exclamation sign\n" . "and one or more buttons. Press the buttons to see some\n" . "examples of this." ); $w{10}->add( undef, 'Buttonbox', -y => 7, -buttons => [ { -label => "< Example 1 >", -onpress => sub { shift()->root->error("Some error occurred, I guess...") } },{ -label => "< Example 2 >", -onpress => sub { shift()->root->error( -message => "Unfortunately this program is\n" . "unable to cope with the enless\n" . "stream of bugs the programmer\n" . "has induced!!!!", -title => 'Serious trouble', ); } },{ -label => "< Example 3 >", -onpress => sub { my $b = shift(); my $value = $b->root->error( -message => "General error somewhere in the program\n" . "Are you sure you want to continue?", -buttons => ['yes', 'no'], -title => 'Vague problem detected', ); $b->root->dialog( -message => "You do " . ($value?'':'not ') . "want to continue.", -title => "What did you answer?" ); } } ], ); # ---------------------------------------------------------------------- # Dialog::Filebrowser # ---------------------------------------------------------------------- $w{11}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The Filebrowser dialog is one of them. Using this dialog\n" . "it is possible to select a file anywhere on the file-\n" . "system. Press the buttons below for a demo" ); $w{11}->add( undef, 'Buttonbox', -y => 7, -buttons => [ { -label => "< Load file >", -onpress => sub { my $cui = shift()->root; my $file = $cui->loadfilebrowser( -title => "Select some file", -mask => [ ['.', 'All files (*)' ], ['\.txt$', 'Text files (*.txt)' ], ['\.pm$', 'Perl modules (*.pm)'], ], ); $cui->dialog("You selected the file:\n$file") if defined $file; } },{ -label => "< Save file (is fake) >", -onpress => sub { my $cui = shift()->root; my $file = $cui->savefilebrowser("Select some file"); $cui->dialog("You selected the file:\n$file") if defined $file; } } ] ); # ---------------------------------------------------------------------- # Dialog::Progress # ---------------------------------------------------------------------- $w{12}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The Progress dialog is one of them. Using this dialog\n" . "it is possible to present some progress information to\n" . "the user. Press the buttons below for a demo." ); $w{12}->add( undef, 'Buttonbox', -y => 7, -buttons => [ { -label => "< Example 1 >", -onpress => sub { $cui->progress( -min => 0, -max => 700, -title => 'Progress dialog without a message', -nomessage => 1, ); for my $pos (0..700) { $cui->setprogress($pos); } sleep 1; $cui->noprogress; } },{ -label => "< Example 2 >", -onpress => sub { my $msg = "Counting from 0 to 700...\n"; $cui->progress( -min => 0, -max => 700, -title => 'Progress dialog with a message', -message => $msg, ); for my $pos (0..700) { $cui->setprogress($pos, $msg . $pos . " / 700"); } $cui->setprogress(undef, "Finished counting!"); sleep 1; $cui->noprogress; } } ] ); # ---------------------------------------------------------------------- # Dialog::Status # ---------------------------------------------------------------------- $w{13}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The Status dialog is one of them. Using this dialog\n" . "it is possible to present some status information to\n" . "the user. Press the buttons below for a demo." ); $w{13}->add( undef, 'Buttonbox', -y => 7, -buttons => [ { -label => "< Example 1 >", -onpress => sub { $cui->status("This is a status dialog..."); sleep 1; $cui->nostatus; } },{ -label => "< Example 2 >", -onpress => sub { $cui->status("A status dialog can contain\n" . "more than one line, but that is\n" . "about all that can be told about\n" . "status dialogs I'm afraid :-)" ); sleep 3; $cui->nostatus; } } ] ); # ---------------------------------------------------------------------- # Dialog::Calendar # ---------------------------------------------------------------------- $w{14}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The calendar dialog is one of them. Using this dialog\n" . "it is possible to select a date." ); $w{14}->add( undef, 'Label', -y => 7, -text => 'Date:' ); $w{14}->add( 'datelabel', 'Label', -width => 10, -y => 7, -x => 6, -text => 'none', ); $w{14}->add( undef, 'Buttonbox', -y => 7, -x => 17, -buttons => [ { -label => "< Set date >", -onpress => sub { my $label = shift()->parent->getobj('datelabel'); my $date = $label->get; print STDERR "$date\n"; $date = undef if $date eq 'none'; my $return = $cui->calendardialog(-date => $date); $label->text($return) if defined $return; } },{ -label => "< Clear date >", -onpress => sub { my $label = shift()->parent->getobj('datelabel'); $label->text('none'); } } ] ); # ---------------------------------------------------------------------- # Dialog::Question # ---------------------------------------------------------------------- $w{15}->add( undef, 'Label', -text => "Curses::UI has a number of ready-to-use dialog windows.\n" . "The question dialog is one of them. Using this dialog\n" . "it is possible to prompt the user to enter an answer.", ); $w{15}->add( undef, 'Buttonbox', -y => 7, -buttons => [ { -label => "< Example 1 >", -onpress => sub { my $button = shift; my $feeling = $button->root->question("How awesome are you?"); if ($feeling) { $button->root->dialog("You answered '$feeling'"); } else { $button->root->dialog("Question cancelled."); } } },{ -label => "< Example 2 >", -onpress => sub { my $button = shift; my $feeling = $button->root->question( -question => "How does coffee make you feel?", -title => 'Dialog::Question example', ); if ($feeling) { $button->root->dialog("You answered '$feeling'"); } else { $button->root->dialog("Question cancelled."); } } },{ -label => "< Example 3 >", -onpress => sub { my $button = shift; my $feeling = $button->root->question( -question => "How does coffee make you feel?", -title => 'Dialog::Question example', -answer => "Really good.", ); if ($feeling) { $button->root->dialog("You answered '$feeling'"); } else { $button->root->dialog("Question cancelled."); } } } ], ); # ---------------------------------------------------------------------- # Setup bindings and focus # ---------------------------------------------------------------------- # Bind <CTRL+Q> to quit. $cui->set_binding( sub{ exit }, "\cQ" ); # Bind <CTRL+X> to menubar. $cui->set_binding( sub{ shift()->root->focus('menu') }, "\cX" ); sub goto_next_demo() { $current_demo++; $current_demo = @screens if $current_demo > @screens; $w{$current_demo}->focus; } $cui->set_binding( \&goto_next_demo, "\cN" ); sub goto_prev_demo() { $current_demo--; $current_demo = 1 if $current_demo < 1; $w{$current_demo}->focus; } $cui->set_binding( \&goto_prev_demo, "\cP" ); $w{$current_demo}->focus; # ---------------------------------------------------------------------- # Get things rolling... # ---------------------------------------------------------------------- $cui->mainloop;
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