Correl Roush
a3dfc6d2b8
git-svn-id: file:///srv/svn/scanner/trunk@18 a0501263-5b7a-4423-a8ba-1edf086583e7
135 lines
3.1 KiB
PHP
135 lines
3.1 KiB
PHP
<?php
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/**
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* Text Input
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*
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* @package Nc
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*/
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class NcTextInput extends NcWindow {
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/**
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* @var string Current value
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*/
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var $value = '';
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/**
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* @var string Last value
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*/
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var $last_value = '';
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/**
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* @var boolean Active
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*/
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var $active = false;
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/**
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* @var string Perl regular expression for filtering input
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*/
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var $filter = false;
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/**
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* Constructor
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*
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* Creates a new text input widget
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*
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* @param NcWindow $parent Parent window
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* @param integer $width Width
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* @param integer $y Row
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* @param integer $x Column
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* @param string $value Initial value
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* @param string $filter Perl regular expression for filtering input
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*/
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public function __construct( &$parent, $width, $y, $x, $value = '', $filter = false ) {
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parent::__construct( $parent, 1, $width, $y, $x, false );
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$this->last_value = $this->value = $value;
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$this->filter = $filter !== false && @preg_match( $filter, '' ) !== false ? $filter : false;
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$this->update();
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}
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/**
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* Update the input control on the screen
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*
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* Widget is highlighted when active
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*/
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public function update() {
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$this->attribute_on( NCURSES_A_UNDERLINE );
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if( $this->active ) {
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$this->attribute_on( NCURSES_A_REVERSE );
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}
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$this->write_fixed( 0, 0, substr( $this->value, - $this->width ) );
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$this->attribute_off( NCURSES_A_UNDERLINE );
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$this->attribute_off( NCURSES_A_REVERSE );
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}
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/**
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* Get or set value
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*/
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public function value( $value = false ) {
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if( $value === false ) {
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return $this->value;
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} else {
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$this->value = $value;
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}
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}
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/**
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* Activate input widget and accept input
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*
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* Input ends when the user presses the enter key.
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* If a filter has been set and the input does not pass the filter, the value
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* reverts to the previous value, and this function returns false.
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*
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* @return string|boolean Text entered, or false
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*/
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public function get() {
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$this->active = true;
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$this->update();
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while( $this->active ) {
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$key = $this->get_char();
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switch( $key ) {
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case NCURSES_KEY_BACKSPACE:
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$this->value = substr( $this->value, 0, strlen( $this->value ) - 1 );
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break;
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case 13:
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$this->active = false;
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break;
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default:
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if( in_array( $key, range( 32, 126 ) ) ) {
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$this->value .= chr( $key );
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}
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}
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$this->update();
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}
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$this->update();
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return $this->filter !== false && @preg_match( $this->filter, $this->value ) < 1 ? false : $this->value;
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}
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public function focus() {
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parent::focus();
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$this->active = true;
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$this->update();
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}
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public function blur() {
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$this->active = false;
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$this->update();
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parent::blur();
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}
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public function on_key_press($key) {
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switch( $key ) {
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case NCURSES_KEY_BACKSPACE:
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$this->value = substr( $this->value, 0, strlen( $this->value ) - 1 );
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break;
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case 27:
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// ESC
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$this->value = $this->last_value;
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break;
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case 9:
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// TAB
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case 13:
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// RETURN
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if( $this->value !== $this->last_value ) {
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$this->emit('change', $this->value);
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}
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$this->blur();
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break;
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default:
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if( in_array( $key, range( 32, 126 ) ) ) {
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$this->value .= chr( $key );
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}
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parent::on_key_press($key);
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}
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$this->update();
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}
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}
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?>
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