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<?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_View
* @subpackage Helper
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Breadcrumbs.php 16971 2009-07-22 18:05:45Z mikaelkael $
*/
/**
* @see Zend_View_Helper_Navigation_HelperAbstract
*/
require_once 'Zend/View/Helper/Navigation/HelperAbstract.php';
/**
* Helper for printing breadcrumbs
*
* @category Zend
* @package Zend_View
* @subpackage Helper
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_View_Helper_Navigation_Breadcrumbs
extends Zend_View_Helper_Navigation_HelperAbstract
{
/**
* Breadcrumbs separator string
*
* @var string
*/
protected $_separator = ' > ';
/**
* The minimum depth a page must have to be included when rendering
*
* @var int
*/
protected $_minDepth = 1;
/**
* Whether last page in breadcrumb should be hyperlinked
*
* @var bool
*/
protected $_linkLast = false;
/**
* Partial view script to use for rendering menu
*
* @var string|array
*/
protected $_partial;
/**
* View helper entry point:
* Retrieves helper and optionally sets container to operate on
*
* @param Zend_Navigation_Container $container [optional] container to
* operate on
* @return Zend_View_Helper_Navigation_Breadcrumbs fluent interface,
* returns self
*/
public function breadcrumbs(Zend_Navigation_Container $container = null)
{
if (null !== $container) {
$this->setContainer($container);
}
return $this;
}
// Accessors:
/**
* Sets breadcrumb separator
*
* @param string $separator separator string
* @return Zend_View_Helper_Navigation_Breadcrumbs fluent interface,
* returns self
*/
public function setSeparator($separator)
{
if (is_string($separator)) {
$this->_separator = $separator;
}
return $this;
}
/**
* Returns breadcrumb separator
*
* @return string breadcrumb separator
*/
public function getSeparator()
{
return $this->_separator;
}
/**
* Sets whether last page in breadcrumbs should be hyperlinked
*
* @param bool $linkLast whether last page should
* be hyperlinked
* @return Zend_View_Helper_Navigation_Breadcrumbs fluent interface,
* returns self
*/
public function setLinkLast($linkLast)
{
$this->_linkLast = (bool) $linkLast;
return $this;
}
/**
* Returns whether last page in breadcrumbs should be hyperlinked
*
* @return bool whether last page in breadcrumbs should be hyperlinked
*/
public function getLinkLast()
{
return $this->_linkLast;
}
/**
* Sets which partial view script to use for rendering menu
*
* @param string|array $partial partial view script or
* null. If an array is
* given, it is expected to
* contain two values;
* the partial view script
* to use, and the module
* where the script can be
* found.
* @return Zend_View_Helper_Navigation_Breadcrumbs fluent interface,
* returns self
*/
public function setPartial($partial)
{
if (null === $partial || is_string($partial) || is_array($partial)) {
$this->_partial = $partial;
}
return $this;
}
/**
* Returns partial view script to use for rendering menu
*
* @return string|array|null
*/
public function getPartial()
{
return $this->_partial;
}
// Render methods:
/**
* Renders breadcrumbs by chaining 'a' elements with the separator
* registered in the helper
*
* @param Zend_Navigation_Container $container [optional] container to
* render. Default is to
* render the container
* registered in the helper.
* @return string helper output
*/
public function renderStraight(Zend_Navigation_Container $container = null)
{
if (null === $container) {
$container = $this->getContainer();
}
// find deepest active
if (!$active = $this->findActive($container)) {
return '';
}
$active = $active['page'];
// put the deepest active page last in breadcrumbs
if ($this->getLinkLast()) {
$html = $this->htmlify($active);
} else {
$html = $active->getLabel();
if ($this->getUseTranslator() && $t = $this->getTranslator()) {
$html = $t->translate($html);
}
$html = $this->view->escape($html);
}
// walk back to root
while ($parent = $active->getParent()) {
if ($parent instanceof Zend_Navigation_Page) {
// prepend crumb to html
$html = $this->htmlify($parent)
. $this->getSeparator()
. $html;
}
if ($parent === $container) {
// at the root of the given container
break;
}
$active = $parent;
}
return strlen($html) ? $this->getIndent() . $html : '';
}
/**
* Renders the given $container by invoking the partial view helper
*
* The container will simply be passed on as a model to the view script,
* so in the script it will be available in <code>$this->container</code>.
*
* @param Zend_Navigation_Container $container [optional] container to
* pass to view script.
* Default is to use the
* container registered in the
* helper.
* @param string|array $partial [optional] partial view
* script to use. Default is
* to use the partial
* registered in the helper.
* If an array is given, it is
* expected to contain two
* values; the partial view
* script to use, and the
* module where the script can
* be found.
* @return string helper output
*/
public function renderPartial(Zend_Navigation_Container $container = null,
$partial = null)
{
if (null === $container) {
$container = $this->getContainer();
}
if (null === $partial) {
$partial = $this->getPartial();
}
if (empty($partial)) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception(
'Unable to render menu: No partial view script provided');
}
// put breadcrumb pages in model
$model = array('pages' => array());
if ($active = $this->findActive($container)) {
$active = $active['page'];
$model['pages'][] = $active;
while ($parent = $active->getParent()) {
if ($parent instanceof Zend_Navigation_Page) {
$model['pages'][] = $parent;
} else {
break;
}
if ($parent === $container) {
// break if at the root of the given container
break;
}
$active = $parent;
}
$model['pages'] = array_reverse($model['pages']);
}
if (is_array($partial)) {
if (count($partial) != 2) {
require_once 'Zend/View/Exception.php';
throw new Zend_View_Exception(
'Unable to render menu: A view partial supplied as ' .
'an array must contain two values: partial view ' .
'script and module where script can be found');
}
return $this->view->partial($partial[0], $partial[1], $model);
}
return $this->view->partial($partial, null, $model);
}
// Zend_View_Helper_Navigation_Helper:
/**
* Renders helper
*
* Implements {@link Zend_View_Helper_Navigation_Helper::render()}.
*
* @param Zend_Navigation_Container $container [optional] container to
* render. Default is to
* render the container
* registered in the helper.
* @return string helper output
*/
public function render(Zend_Navigation_Container $container = null)
{
if ($partial = $this->getPartial()) {
return $this->renderPartial($container, $partial);
} else {
return $this->renderStraight($container);
}
}
}
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