web/Zend/Form/Decorator/Label.php
changeset 0 4eba9c11703f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Form/Decorator/Label.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,332 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Form
+ * @subpackage Decorator
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+/** Zend_Form_Decorator_Abstract */
+require_once 'Zend/Form/Decorator/Abstract.php';
+
+/**
+ * Zend_Form_Decorator_Label
+ *
+ * Accepts the options:
+ * - separator: separator to use between label and content (defaults to PHP_EOL)
+ * - placement: whether to append or prepend label to content (defaults to prepend)
+ * - tag: if set, used to wrap the label in an additional HTML tag
+ * - opt(ional)Prefix: a prefix to the label to use when the element is optional
+ * - opt(iona)lSuffix: a suffix to the label to use when the element is optional
+ * - req(uired)Prefix: a prefix to the label to use when the element is required
+ * - req(uired)Suffix: a suffix to the label to use when the element is required
+ *
+ * Any other options passed will be used as HTML attributes of the label tag.
+ *
+ * @category   Zend
+ * @package    Zend_Form
+ * @subpackage Decorator
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Label.php 22128 2010-05-06 11:18:02Z alab $
+ */
+class Zend_Form_Decorator_Label extends Zend_Form_Decorator_Abstract
+{
+    /**
+     * Default placement: prepend
+     * @var string
+     */
+    protected $_placement = 'PREPEND';
+
+    /**
+     * HTML tag with which to surround label
+     * @var string
+     */
+    protected $_tag;
+
+    /**
+     * Set element ID
+     *
+     * @param  string $id
+     * @return Zend_Form_Decorator_Label
+     */
+    public function setId($id)
+    {
+        $this->setOption('id', $id);
+        return $this;
+    }
+
+    /**
+     * Retrieve element ID (used in 'for' attribute)
+     *
+     * If none set in decorator, looks first for element 'id' attribute, and
+     * defaults to element name.
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        $id = $this->getOption('id');
+        if (null === $id) {
+            if (null !== ($element = $this->getElement())) {
+                $id = $element->getId();
+                $this->setId($id);
+            }
+        }
+
+        return $id;
+    }
+
+    /**
+     * Set HTML tag with which to surround label
+     *
+     * @param  string $tag
+     * @return Zend_Form_Decorator_Label
+     */
+    public function setTag($tag)
+    {
+        if (empty($tag)) {
+            $this->_tag = null;
+        } else {
+            $this->_tag = (string) $tag;
+        }
+
+        $this->removeOption('tag');
+
+        return $this;
+    }
+
+    /**
+     * Get HTML tag, if any, with which to surround label
+     *
+     * @return void
+     */
+    public function getTag()
+    {
+        if (null === $this->_tag) {
+            $tag = $this->getOption('tag');
+            if (null !== $tag) {
+                $this->removeOption('tag');
+                $this->setTag($tag);
+            }
+            return $tag;
+        }
+
+        return $this->_tag;
+    }
+
+    /**
+     * Get class with which to define label
+     *
+     * Appends either 'optional' or 'required' to class, depending on whether
+     * or not the element is required.
+     *
+     * @return string
+     */
+    public function getClass()
+    {
+        $class   = '';
+        $element = $this->getElement();
+
+        $decoratorClass = $this->getOption('class');
+        if (!empty($decoratorClass)) {
+            $class .= ' ' . $decoratorClass;
+        }
+
+        $type  = $element->isRequired() ? 'required' : 'optional';
+
+        if (!strstr($class, $type)) {
+            $class .= ' ' . $type;
+            $class = trim($class);
+        }
+
+        return $class;
+    }
+
+    /**
+     * Load an optional/required suffix/prefix key
+     *
+     * @param  string $key
+     * @return void
+     */
+    protected function _loadOptReqKey($key)
+    {
+        if (!isset($this->$key)) {
+            $value = $this->getOption($key);
+            $this->$key = (string) $value;
+            if (null !== $value) {
+                $this->removeOption($key);
+            }
+        }
+    }
+
+    /**
+     * Overloading
+     *
+     * Currently overloads:
+     *
+     * - getOpt(ional)Prefix()
+     * - getOpt(ional)Suffix()
+     * - getReq(uired)Prefix()
+     * - getReq(uired)Suffix()
+     * - setOpt(ional)Prefix()
+     * - setOpt(ional)Suffix()
+     * - setReq(uired)Prefix()
+     * - setReq(uired)Suffix()
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Zend_Form_Exception for unsupported methods
+     */
+    public function __call($method, $args)
+    {
+        $tail = substr($method, -6);
+        $head = substr($method, 0, 3);
+        if (in_array($head, array('get', 'set'))
+            && (('Prefix' == $tail) || ('Suffix' == $tail))
+        ) {
+            $position = substr($method, -6);
+            $type     = strtolower(substr($method, 3, 3));
+            switch ($type) {
+                case 'req':
+                    $key = 'required' . $position;
+                    break;
+                case 'opt':
+                    $key = 'optional' . $position;
+                    break;
+                default:
+                    require_once 'Zend/Form/Exception.php';
+                    throw new Zend_Form_Exception(sprintf('Invalid method "%s" called in Label decorator, and detected as type %s', $method, $type));
+            }
+
+            switch ($head) {
+                case 'set':
+                    if (0 === count($args)) {
+                        require_once 'Zend/Form/Exception.php';
+                        throw new Zend_Form_Exception(sprintf('Method "%s" requires at least one argument; none provided', $method));
+                    }
+                    $value = array_shift($args);
+                    $this->$key = $value;
+                    return $this;
+                case 'get':
+                default:
+                    if (null === ($element = $this->getElement())) {
+                        $this->_loadOptReqKey($key);
+                    } elseif (isset($element->$key)) {
+                        $this->$key = (string) $element->$key;
+                    } else {
+                        $this->_loadOptReqKey($key);
+                    }
+                    return $this->$key;
+            }
+        }
+
+        require_once 'Zend/Form/Exception.php';
+        throw new Zend_Form_Exception(sprintf('Invalid method "%s" called in Label decorator', $method));
+    }
+
+    /**
+     * Get label to render
+     *
+     * @return void
+     */
+    public function getLabel()
+    {
+        if (null === ($element = $this->getElement())) {
+            return '';
+        }
+
+        $label = $element->getLabel();
+        $label = trim($label);
+
+        if (empty($label)) {
+            return '';
+        }
+
+        if (null !== ($translator = $element->getTranslator())) {
+            $label = $translator->translate($label);
+        }
+
+        $optPrefix = $this->getOptPrefix();
+        $optSuffix = $this->getOptSuffix();
+        $reqPrefix = $this->getReqPrefix();
+        $reqSuffix = $this->getReqSuffix();
+        $separator = $this->getSeparator();
+
+        if (!empty($label)) {
+            if ($element->isRequired()) {
+                $label = $reqPrefix . $label . $reqSuffix;
+            } else {
+                $label = $optPrefix . $label . $optSuffix;
+            }
+        }
+
+        return $label;
+    }
+
+
+    /**
+     * Render a label
+     *
+     * @param  string $content
+     * @return string
+     */
+    public function render($content)
+    {
+        $element = $this->getElement();
+        $view    = $element->getView();
+        if (null === $view) {
+            return $content;
+        }
+
+        $label     = $this->getLabel();
+        $separator = $this->getSeparator();
+        $placement = $this->getPlacement();
+        $tag       = $this->getTag();
+        $id        = $this->getId();
+        $class     = $this->getClass();
+        $options   = $this->getOptions();
+
+
+        if (empty($label) && empty($tag)) {
+            return $content;
+        }
+
+        if (!empty($label)) {
+            $options['class'] = $class;
+            $label = $view->formLabel($element->getFullyQualifiedName(), trim($label), $options);
+        } else {
+            $label = '&#160;';
+        }
+
+        if (null !== $tag) {
+            require_once 'Zend/Form/Decorator/HtmlTag.php';
+            $decorator = new Zend_Form_Decorator_HtmlTag();
+            $decorator->setOptions(array('tag' => $tag,
+                                         'id'  => $id . '-label'));
+
+            $label = $decorator->render($label);
+        }
+
+        switch ($placement) {
+            case self::APPEND:
+                return $content . $separator . $label;
+            case self::PREPEND:
+                return $label . $separator . $content;
+        }
+    }
+}