Tickit::DSL - domain-specific language for Tickit terminal apps
version 0.010
use Tickit::DSL; vbox { hbox { static 'left' } expand => 1; hbox { static 'right' } expand => 1; }
WARNING: This is an early version, has an experimental API, and is subject to change in future. Please get in contact and/or wait for 1.0 if you want something stable.
Provides a simplified interface for writing Tickit applications. This is mainly intended for prototyping:
#!/usr/bin/env perl use strict; use warnings; use Tickit::DSL; vbox { # Single line menu at the top of the screen menubar { submenu File => sub { menuitem Open => sub { warn 'open' }; menuspacer; menuitem Exit => sub { tickit->stop }; }; submenu Edit => sub { menuitem Copy => sub { warn 'copy' }; menuitem Cut => sub { warn 'cut' }; menuitem Paste => sub { warn 'paste' }; }; menuspacer; submenu Help => sub { menuitem About => sub { warn 'about' }; }; }; # A 2-panel layout covers most of the rest of the display widget { # Left and right panes: vsplit { # A tree on the left, 1/4 total width widget { placeholder; } expand => 1; # and a tab widget on the right, 3/4 total width widget { tabbed { widget { placeholder } label => 'First thing'; }; } expand => 3; } expand => 1; } expand => 1; # At the bottom of the screen we show the status bar # statusbar { } show => [qw(clock cpu memory debug)]; # although it's not on CPAN yet so we don't }; tickit->run;
By default we'll import all the known widget shortcuts. To override this, pass a list (possibly empty) on import:
use Tickit::DSL qw();
By default, the synchronous Tickit class will be used. You can make "tickit" refer to a Tickit::Async object instead by passing the :async tag:
:async
use Tickit::DSL qw(:async);
the default is :sync , but you can make this explicit:
:sync
use Tickit::DSL qw(:sync);
There is currently no support for mixing the two styles in a single application - if :async or :sync have already been passed to a previous import, attempting to apply the opposite one will cause an exception.
This is fine:
use Tickit::DSL qw(:sync); use Tickit::DSL qw(); use Tickit::DSL;
This is not:
use Tickit::DSL qw(:sync); use Tickit::DSL qw(:async); # will raise an exception
All functions are exported, unless otherwise noted.
Returns the IO::Async::Loop instance if we're in :async mode, throws an exception if we're not. See "import" for details.
Returns (constructing if necessary) the Tickit (or Tickit::Async) instance.
Defers a block of code.
later { print "this happened later\n"; };
Will run the code after the next round of I/O events.
Sets up a timer to run a block of code later.
timer { print "about a second has passed\n"; } after => 1; timer { print "about a minute has passed\n"; } at => time + 60;
Takes a codeblock and either at or after definitions. Passing anything other than a single definition will cause an exception.
at
after
Adds some widgets under an existing widget.
my $some_widget = vbox { }; add_widgets { vbox { ... }; hbox { ... }; } under => $some_widget;
Returns the widget we added the new widgets under (i.e. the under parameter).
under
The following functions create/manage widgets which are useful for layout purposes.
Creates a Tickit::Widget::VBox. This is a container, so the first parameter is a coderef which will switch the current parent to the new vbox.
Any additional parameters will be passed to the new Tickit::Widget::VBox instance:
vbox { ... } class => 'some_vbox'; vbox { ... } classes => [qw(other vbox)], style => { fg => 'green' };
Creates a Tickit::Widget::VSplit. This is a container, so the first parameter is a coderef which will switch the current parent to the new widget. Note that this widget expects 2 child widgets only.
Any additional parameters will be passed to the new Tickit::Widget::VSplit instance:
vsplit { ... } class => 'some_vsplit'; vsplit { ... } classes => [qw(other vsplit)], style => { fg => 'green' };
Uses Tickit::Widget::Frame to draw a frame around a single widget. This is a container, so the first parameter is a coderef which will switch the current parent to the new frame.
Any additional parameters will be passed to the new Tickit::Widget::Frame instance:
frame { ... } title => 'some frame', title_align => 0.5;
Creates a Tickit::Widget::GridBox. This is a container, so the first parameter is a coderef which will switch the current parent to the new widget.
Although any widget is allowed here, you'll probably want all the immediate children to be "gridrow"s.
Any additional parameters will be passed to the new Tickit::Widget::GridBox instance:
gridbox { gridrow { static 'left'; static 'right' }; gridrow { static 'BL'; static 'BR' }; } style => { col_spacing => 1, row_spacing => 1 };
Marks a separate row in an existing Tickit::Widget::GridBox. This behaves something like a container, see "gridbox" for details.
Creates a Tickit::Widget::HBox. This is a container, so the first parameter is a coderef which will switch the current parent to the new hbox.
Any additional parameters will be passed to the new Tickit::Widget::HBox instance:
hbox { ... } class => 'some_hbox'; hbox { ... } classes => [qw(other hbox)], style => { fg => 'green' };
Creates a Tickit::Widget::HSplit. This is a container, so the first parameter is a coderef which will switch the current parent to the new widget. Note that this widget expects 2 child widgets only.
Any additional parameters will be passed to the new Tickit::Widget::HSplit instance:
hsplit { ... } class => 'some_hsplit'; hsplit { ... } classes => [qw(other hsplit)], style => { fg => 'green' };
See "pane" for the details.
A pane in a "relative" layout.
The following functions create/manage widgets which deal with data that wouldn't normally fit in the available terminal space.
Creates a Tickit::Widget::ScrollBox. This is a container, so the first parameter is a coderef which will switch the current parent to the new widget. Note that this widget expects a single child widget only.
Any additional parameters will be passed to the new Tickit::Widget::ScrollBox instance:
scrollbox { ... } class => 'some_hsplit';
Adds a Tickit::Widget::Scroller. Contents are probably going to be "scroller_text" for now.
scroller { scroller_text 'line ' . $_ for 1..500; };
Passes any additional args to the constructor:
scroller { scroller_text 'line ' . $_ for 1..100; } gravity => 'bottom';
A text item, expects to be added to a "scroller".
These act as containers.
Creates a Tickit::Widget::Tabbed instance. Use the "widget" wrapper to set the label when adding new tabs, or provide the label as a parent: attribute:
tabbed { widget { static 'some text' } label => 'first tab'; static 'other text' 'parent:label' => 'second tab'; };
If you want a different ribbon, pass it like so:
tabbed { static 'some text' 'parent:label' => 'first tab'; static 'other text' 'parent:label' => 'second tab'; } ribbon_class => 'Some::Ribbon::Class', tab_position => 'top';
The ribbon_class parameter may be undocumented.
ribbon_class
A Tickit::Widget::Statusbar. Not very exciting.
Static text. Very simple:
static 'some text';
You can be more specific if you want:
static 'some text', align => 'center';
A Tickit::Widget::Entry input field. Takes a coderef as the first parameter since the on_enter handler seems like an important feature.
on_enter
my $rslt = static 'result here'; entry { shift; $rslt->set_text(eval shift) } text => '1 + 3';
Checkbox (or checkbutton).
radiogroup { radiobutton { } 'one'; radiobutton { } 'two'; radiobutton { } 'three'; };
See "radiobutton".
A button. First parameter is the code to run when activated, second parameter is the label:
button { warn "Activated" } 'OK';
A Tickit::Widget::Tree. If it works I'd be amazed.
Use this if you're not sure which widget you want yet. It's a Tickit::Widget::Placegrid, so there aren't many options.
placeholder; vbox { widget { placeholder } expand => 3; placeholder 'parent:expand' => 5; };
This is also available under the alias placegrid.
placegrid
An alias for "placeholder".
Purely decorative. A Tickit::Widget::Decoration, controlled entirely through styles.
decoration; vbox { widget { decoration } expand => 3; decoration class => 'deco1', 'parent:expand' => 5; };
Things for menus
Menubar courtesy of Tickit::Widget::MenuBar. Every self-respecting app wants one of these.
menubar { submenu File => sub { menuitem Exit => sub { tickit->stop }; }; menuspacer; submenu Help => sub { menuitem About => sub { warn 'about' }; }; };
A menu entry in a "menubar". First parameter is used as the label, second is the coderef to populate the widgets (will be called immediately).
See "menubar".
Adds a spacer if you're in a menu. No idea what it'd do if you're not in a menu.
A menu is not much use without something in it. See "menubar".
Things that don't really fit into the other categories.
A generic function for adding 'custom' widgets - i.e. anything that's not already supported by this module.
This will call the coderef, expecting to get back a Tickit::Widget, then it'll apply that widget to whatever the current parent is. Any options will be passed as widget arguments, see "widget" for details.
customwidget { my $tbl = Tickit::Widget::Table::Paged->new; $tbl->add_column(...); $tbl; } expand => 1;
Many container widgets provide support for additional options when adding child widgets. For example, a Tickit::Widget::VBox can take an expand parameter which determines how space should be allocated between children.
expand
This function provides a way to pass those options - use it as a wrapper around another widget-generating function, like so:
widget { static 'this is text' } expand => 1;
in context, this would be:
vbox { widget { static => '33%' } expand => 1; widget { static => '66%' } expand => 2; };
Note that this functionality can also be applied by passing attributes with the parent: prefix o the widgets themselves - the above example would thus be:
parent:
vbox { static => '33%' 'parent:expand' => 1; static => '66%' 'parent:expand' => 2; };
Internal function used for applying the given widget.
Not exported.
Tickit::Widget::Border
Tickit::Widget::Box
Tickit::Widget::Button
Tickit::Widget::CheckButton
Tickit::Widget::Decoration
Tickit::Widget::Entry
Tickit::Widget::Frame
Tickit::Widget::GridBox
Tickit::Widget::HBox
Tickit::Widget::HSplit
Tickit::Widget::Layout::Relative
Tickit::Widget::Menu
Tickit::Widget::Placegrid
Tickit::Widget::Progressbar
Tickit::Widget::RadioButton
Tickit::Widget::Scroller
Tickit::Widget::Scroller::Item::Text
Tickit::Widget::ScrollBox
Tickit::Widget::SegmentDisplay
Tickit::Widget::SparkLine
Tickit::Widget::Static
Tickit::Widget::Statusbar
Tickit::Widget::Tabbed
Tickit::Widget::Table
Tickit::Widget::Tree
Tickit::Widget::VBox
Tickit::Widget::VSplit
as_heavy, export, export_fail, export_ok_tags, export_tags, export_to_level, require_version
Tom Molesworth <cpan@entitymodel.com>
Copyright Tom Molesworth 2012-2013. Licensed under the same terms as Perl itself.
To install Tickit::DSL, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Tickit::DSL
CPAN shell
perl -MCPAN -e shell install Tickit::DSL
For more information on module installation, please visit the detailed CPAN module installation guide.