Curses::Widgets::ComboBox - Combo-Box Widgets $Id: ComboBox.pm,v 1.103 2002/11/03 23:34:50 corliss Exp corliss $ use Curses::Widgets::ComboBox; $cb = Curses::Widgets::ComboBox->new({ CAPTION => 'Select', CAPTIONCOL => 'yellow', COLUMNS => 10, MAXLENGTH => 255, MASK => undef, VALUE => '', INPUTFUNC => \&scankey, FOREGROUND => 'white', BACKGROUND => 'black', BORDER => 1, BORDERCOL => 'red', FOCUSSWITCH => "\t\n", CURSORPOS => 0, TEXTSTART => 0, PASSWORD => 0, X => 1, Y => 1, READONLY => 0, LISTITEMS => [qw(foo bar wop)], }); $cb->draw($mwh, 1); See the Curses::Widgets pod for other methods. Curses::Widgets::ComboBox provides simplified OO access to Curses-based combo-boxes. This widget essentially acts as text field widget, but upon a KEY_DOWN or "\n", a drop-down list is displayed, and the item selected is put in the text field as the value.

new (inherited from Curses::Widgets)
$cb = Curses::Widgets::ComboBox->new({ CAPTION => 'Select', CAPTIONCOL => 'yellow', COLUMNS => 10, MAXLENGTH => 255, MASK => undef, VALUE => '', INPUTFUNC => \&scankey, FOREGROUND => 'white', BACKGROUND => 'black', BORDER => 1, BORDERCOL => 'red', FOCUSSWITCH => "\t\n", CURSORPOS => 0, TEXTSTART => 0, PASSWORD => 0, X => 1, Y => 1, READONLY => 0, LISTITEMS => [qw(foo bar wop)], }); The new method instantiates a new ComboBox object. The only mandatory key/value pairs in the configuration hash are X and Y. All others have the following defaults: Key Default Description ============================================================ CAPTION undef Caption superimposed on border CAPTIONCOL undef Foreground colour for caption text COLUMNS 10 Number of columns displayed MAXLENGTH 255 Maximum string length allowed MASK undef Not yet implemented VALUE '' Current field text INPUTFUNC \&scankey Function to use to scan for keystrokes FOREGROUND undef Default foreground colour BACKGROUND undef Default background colour BORDER 1 Display a border around the field BORDERCOL undef Foreground colour for border FOCUSSWITCH "\t\n" Characters which signify end of input CURSORPOS 0 Starting position of the cursor TEXTSTART 0 Position in string to start displaying PASSWORD 0 Subsitutes '*' instead of characters READONLY 0 Prevents alteration to content LISTLINES 5 Number of lines to display at a time in the drop-down list LISTCOLUMNS[COLUMNS] Width of the drop-down list. Defaults to the same length specified for the CombBox widget LISTITEMS [] Items listed in drop-down list The CAPTION is only valid when the BORDER is enabled. If the border is disabled, the field will be underlined, provided the terminal supports it. If MAXLENGTH is undefined, no limit will be placed on the string length.

draw (inherited from Curses::Widgets::TextField)
$cb->draw($mwh, 1); The draw method renders the text field in its current state. This requires a valid handle to a curses window in which it will render itself. The optional second argument, if true, will cause the field's text cursor to be rendered as well.

popup
$combo->popup; This method causes the drop down list to be displayed. Since, theoretically, this list should never be seen unless it's being actively used, we will always assume that we need to draw a cursor on the list as well. (c) 2001 Arthur Corliss (corliss@digitalmages.com)