NAME

Curses::UI::Notebook - Create and manipulate notebook widgets.

CLASS HIERARCHY

 Curses::UI::Widget
    |
    +----Curses::UI::Container
            |
            +----Curses::UI::Notebook

SYNOPSIS

    use Curses::UI;
    my $cui = new Curses::UI;
    my $win = $cui->add(undef, 'Window');
    my $notebook = $win->add(undef, 'Notebook');
    my $page1 = $notebook->add_page('page 1');
    $page1->add(
        undef, 'Label',
        -x    => 15,
        -y    => 6,
        -text => "Page #1.",
    );
    my $page2 = $notebook->add_page('page 2');
    $page2->add(
        undef, 'Label',
        -x    => 15,
        -y    => 6,
        -text => "Page #2.",
    );
    my $page3 = $notebook->add_page('page 3', -on_activate => \&sub );
    $page3->add(
        undef, 'Label',
        -x    => 15,
        -y    => 6,
        -text => "Page #3.",
    );
    $notebook->focus;
    $cui->mainloop;

DESCRIPTION

This package implements a notebook widget similar to that found in Motif. A notebook holds several windows, or pages, only one of which is visible at any given time; tabs at the top of the widget list the pages that are available. In this way, a great deal of information can be fit into a relatively small screen area. [Windows users might recognize this as a tabbed dialog.]

STANDARD OPTIONS

-x, -y, -width, -height, -pad, -padleft, -padright, -padtop, -padbottom, -ipad, -ipadleft, -ipadright, -ipadtop, -ipadbottom, -border, -sbborder, -bg, -fg, -intellidraw, -onchange, -onblur.

See Curses::UI::Widget for a discussion of each of these options.

Note that -border is enabled and both -ipadleft and -ipadright are set to 1 by default when creating notebook objects.

WIDGET-SPECIFIC OPTIONS

• -bindings < HASHREF >

  The keys in this hash reference are keystrokes and the values are routines to which they should be bound. In the event a key is empty, the corresponding routine will become the default routine that process_bindings applies to unmatched keystrokes it receives.

  By default, the following mappings are used:

      KEY                 ROUTINE
      ------------------  ----------
      KEY_HOME, Ctrl-A    first_page
      KEY_END, Ctrl-E     last_page
      KEY_NPAGE, Ctrl-N   next_page
      KEY_PPAGE, Ctrl-P   prev_page
      

• -routines < HASHREF >

  The keys in this hash reference are routines and the values are either scalar values or code references. process_bindings maps keystrokes to routines and then to either a scalar value, which it returns, or a code reference, which it executes.

  By default, the following mappings are used:

      ROUTINE         ACTION
      ----------      -------------------------
      first_page      make first page active
      last_page       make last page active
      next_page       make next page active
      prev_page       make previous page active
      

• -wraparound < BOOLEAN >

  If BOOLEAN has a true value, wraparound is enabled. This means that advancing to the next page will cycle from the last back to the first page and similarly, advancing to the previous page will cycle from the first back to the last page.

  By default, it is true.

METHODS

• new ( OPTIONS )

  Constructs a new notebook object using options in the hash OPTIONS.

• layout ( )

  Lays out the notebook object, makes sure it fits on the available screen, and creates the curses windows for the border / tab labels as well as the effective drawing area.

• draw ( BOOLEAN )

  Draws the notebook object along with the active page's window. If BOOLEAN is true, the screen is not updated after drawing.

  By default, BOOLEAN is true so the screen is updated.

• intellidraw ( )
• focus ( )
• onFocus ( CODEREF )
• onBlur ( CODEREF )

  See Curses::UI::Widget for explanations of these methods.

• add_page ( PAGE [ , -on_activate => sub_ref ] [, -on_delete => ] )

  Adds the specified page to the notebook object and creates an associated window object. Returns the window object or undef on failure.

  Note: the add fails if the page would otherwise cause the tab window to overflow or is already part of the notebook object.

  The "-on_activate" parameter specifies an optional call-back that will be invoked when the page is activated. This call-back will be called with the notebook widget and page name as parameter.

  Likewise for "-on_delete" call-back. This one is invoked when the page is deleted.

• delete_page ( PAGE )

  Deletes the specified page from the notebook object and destroys its associated window object. If the page was active, the first page is made active.

• active_page ( )

  Returns the currently active page in the notebook object.

• first_page ( )

  Returns the first page in the notebook object.

• last_page ( )

  Returns the last page in the notebook object.

• prev_page ( )

  Returns the previous page in the notebook object.

• next_page ( )

  Returns the next page in the notebook object.

• activate_page ( PAGE )

  Makes the specified page in the notebook object active and returns it, redrawing the notebook object in the process.

• mouse_button1 ( )

  Processes mouse button #1 clicks. If the user left-clicks on one of the tabs, activate_page is called with the corresponding page to make it active; otherwise, the click is passed along to the active window.

SEE ALSO

Curses::UI, Curses::UI::Container, Curses::UI::Widget

AUTHOR

George A. Theall, <theall@tifaware.com>

COPYRIGHT AND LICENSE

Copyright (c) 2004, George A. Theall. All rights reserved.

This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.