[Pieforms-commit] SF.net SVN: pieforms: [171] pieforms-php5/trunk/src/pieform/elements/bytes. php

[<ora...@us...>]

Revision: 171
          http://svn.sourceforge.net/pieforms/?rev=171&view=rev
Author:   oracleshinoda
Date:     2007-01-20 00:05:44 -0800 (Sat, 20 Jan 2007)

Log Message:
-----------
Added an element to get a size in bytes. It allows the user to select kilobytes or megabytes as units as well

Added Paths:
-----------
    pieforms-php5/trunk/src/pieform/elements/bytes.php

Added: pieforms-php5/trunk/src/pieform/elements/bytes.php
===================================================================
--- pieforms-php5/trunk/src/pieform/elements/bytes.php	                        (rev 0)
+++ pieforms-php5/trunk/src/pieform/elements/bytes.php	2007-01-20 08:05:44 UTC (rev 171)
@@ -0,0 +1,151 @@
+<?php
+/**
+ * This program is part of Pieforms
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ *
+ * @package    pieform
+ * @subpackage element
+ * @author     Martyn Smith <ma...@ca...>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
+ * @copyright  (C) 2006 Catalyst IT Ltd http://catalyst.net.nz
+ *
+ */
+
+/**
+ * Provides a size chooser, with a text box for a number and a
+ * select box to choose the units, in bytes, kilobytes, or megabytes
+ *
+ * @param Pieform $form    The form to render the element for
+ * @param array   $element The element to render
+ * @return string          The HTML for the element
+ */
+function pieform_element_bytes(Pieform $form, $element) {
+    $formname = $form->get_name();
+    $result = '';
+    $name = $element['name'];
+    if (!isset($element['defaultvalue'])) {
+        $element['defaultvalue'] = null;
+    }
+
+    $global = ($form->get_property('method') == 'get') ? $_GET : $_POST;
+
+    // Get the value of the element for rendering.
+    if (isset($element['value'])) {
+        $bytes = $element['value'];
+        $values = pieform_element_bytes_get_bytes_from_bytes($element['value']);
+    }
+    else if (isset($global[$element['name']])
+             && isset($global[$element['name'] . '_units'])) {
+        $values = array('number' => $global[$element['name']],
+                        'units'  => $global[$element['name'] . '_units']);
+        $bytes = $values['number'] * pieform_element_bytes_in($values['units']);
+    }
+    else if (isset($element['defaultvalue'])) {
+        $bytes = $element['defaultvalue'];
+        $values = pieform_element_bytes_get_bytes_from_bytes($bytes);
+    }
+    else {
+        $values = array('number' => '0', 'units' => 'bytes');
+        $bytes = 0;
+    }
+
+    // @todo probably create with an actual input element, as tabindex doesn't work here for one thing
+    // Same with the select. And do the events using mochikit signal instead of dom events
+    $numberinput = '<input';
+    $numberinput .= ' type="text" size="8" name="' . $name . '"';
+    $numberinput .= ' id="' . $formname . '_' . $name . '" value="' . $values['number'] . '" tabindex="' . $element['tabindex'] . '"';
+    $numberinput .= (isset($element['error']) ? ' class="error"' : '') . ">\n";
+
+    $uselect = '<select onchange="' . $name . '_change()" ';
+    $uselect .= 'name="' . $name . '_units" id="' . $formname . '_' . $name . '_units"' . ' tabindex="' . $element['tabindex'] . "\">\n";
+    foreach (pieform_element_bytes_get_bytes_units() as $u) {
+        $uselect .= "\t<option value=\"$u\"" . (($values['units'] == $u) ? ' selected="selected"' : '') . '>'
+            . $form->i18n('element', 'bytes', $u, $element) . "</option>\n";
+    }
+    $uselect .= "</select>\n";
+
+    return $numberinput . $uselect;
+}
+
+/**
+ * Gets the value of the expiry element and converts it to a time in seconds.
+ *
+ * @param Pieform $form    The form the element is attached to
+ * @param array   $element The element to get the value for
+ * @return int             The number of seconds until expiry
+ */
+function pieform_element_bytes_get_value(Pieform $form, $element) {
+    $name = $element['name'];
+
+    $global = ($form->get_property('method') == 'get') ? $_GET : $_POST;
+    $unit = $global[$name . '_units'];
+    $allunits = pieform_element_bytes_get_bytes_units();
+    $number = $global[$name];
+
+    if (!is_numeric($number)) {
+        $form->set_error($name, $form->i18n('element', 'bytes', 'invalidvalue', $element));
+    }
+
+    if (!in_array($unit,$allunits) || $number < 0) {
+        return null;
+    }
+    return $number * pieform_element_bytes_in($unit);
+}
+
+function pieform_element_bytes_in($units) {
+    switch ($units) {
+        case 'megabytes':
+            return 1048576;
+            break;
+        case 'kilobytes':
+            return 1024;
+            break;
+        default:
+            return 1;
+            break;
+    };
+}
+
+function pieform_element_bytes_i18n() {
+    return array(
+        'en.utf8' => array(
+            'bytes'        => 'Bytes',
+            'kilobytes'    => 'Kilobytes',
+            'megabytes'    => 'Megabytes',
+            'invalidvalue' => 'Value must be a number',
+        ),
+    );
+}
+
+function pieform_element_bytes_get_bytes_units() {
+    return array('bytes', 'kilobytes', 'megabytes');
+}
+
+function pieform_element_bytes_get_bytes_from_bytes($bytes) {
+    if ($bytes == null) {
+        return array('number' => '0', 'units' => 'bytes');
+    }
+
+    foreach (array('megabytes', 'kilobytes') as $units) {
+        if ( $bytes > pieform_element_bytes_in($units) ) {
+            return array('number' => $bytes / pieform_element_bytes_in($units) , 'units' => $units);
+        }
+    }
+
+    return array('number' => $bytes, 'units' => 'bytes');
+}
+
+?>


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