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Editing: Menu.php

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<?php

/**
 * View helper to display menu
 * @package Am_View 
 */
class Am_View_Helper_Menu extends Zend_View_Helper_Navigation_Menu
{
    protected $_activeClass = "active";
    protected $_normalClass = "";
    protected $_disabledClass = "disabled";
    protected $_hasChildrenClass = 'has-children';
    
    function setHasChildrenClass($class)
    {
        $this->_hasChildrenClass = $class;
        return $this;
    }

// Render methods:

/**
     * Renders the deepest active menu within [$minDepth, $maxDeth], (called
     * from {@link renderMenu()})
     *
     * @param  Zend_Navigation_Container $container  container to render
     * @param  array                     $active     active page and depth
     * @param  string                    $ulClass    CSS class for first UL
     * @param  string                    $indent     initial indentation
     * @param  int|null                  $minDepth   minimum depth
     * @param  int|null                  $maxDepth   maximum depth
     * @return string                                rendered menu
     */
    protected function _renderDeepestMenu(Zend_Navigation_Container $container,
                                          $ulClass,
                                          $indent,
                                          $minDepth,
                                          $maxDepth)
    {
        if (!$active = $this->findActive($container, $minDepth - 1, $maxDepth)) {
            return '';
        }

// special case if active page is one below minDepth
        if ($active['depth'] < $minDepth) {
            if (!$active['page']->hasPages()) {
                return '';
            }
        } else if (!$active['page']->hasPages()) {
            // found pages has no children; render siblings
            $active['page'] = $active['page']->getParent();
        } else if (is_int($maxDepth) && $active['depth'] +1 > $maxDepth) {
            // children are below max depth; render siblings
            $active['page'] = $active['page']->getParent();
        }

$ulClass = $ulClass ? ' class="' . $ulClass . '"' : '';
        $html = $indent . '<ul' . $ulClass . '>' . self::EOL;

foreach ($active['page'] as $subPage) {
            if (!$this->accept($subPage)) {
                continue;
            }
            $html .= $indent . '    <li' . $this->getLiClass($subPage, $subPage->isActive(true)) . '>' . self::EOL;
            $html .= $indent . '        ' . $this->htmlify($subPage) . self::EOL;
            $html .= $indent . '    </li>' . self::EOL;
        }

$html .= $indent . '</ul>';

return $html;
    }

/**
     * Renders a normal menu (called from {@link renderMenu()})
     *
     * @param  Zend_Navigation_Container $container   container to render
     * @param  string                    $ulClass     CSS class for first UL
     * @param  string                    $indent      initial indentation
     * @param  int|null                  $minDepth    minimum depth
     * @param  int|null                  $maxDepth    maximum depth
     * @param  bool                      $onlyActive  render only active branch?
     * @return string
     */
    protected function _renderMenu(Zend_Navigation_Container $container,
                                   $ulClass,
                                   $indent,
                                   $minDepth,
                                   $maxDepth,
                                   $onlyActive)
    {
        $html = '';

// find deepest active
        if ($found = $this->findActive($container, $minDepth, $maxDepth)) {
            $foundPage = $found['page'];
            $foundDepth = $found['depth'];
        } else {
            $foundPage = null;
        }

// create iterator
        $iterator = new RecursiveIteratorIterator($container,
                            RecursiveIteratorIterator::SELF_FIRST);
        if (is_int($maxDepth)) {
            $iterator->setMaxDepth($maxDepth);
        }

// iterate container
        $prevDepth = -1;
        foreach ($iterator as $page) {
            $depth = $iterator->getDepth();
            $isActive = $page->isActive(true);
            if ($depth < $minDepth || !$this->accept($page)) {
                // page is below minDepth or not accepted by acl/visibilty
                continue;
            } else if ($onlyActive && !$isActive) {
                // page is not active itself, but might be in the active branch
                $accept = false;
                if ($foundPage) {
                    if ($foundPage->hasPage($page)) {
                        // accept if page is a direct child of the active page
                        $accept = true;
                    } else if ($foundPage->getParent()->hasPage($page)) {
                        // page is a sibling of the active page...
                        if (!$foundPage->hasPages() ||
                            is_int($maxDepth) && $foundDepth + 1 > $maxDepth) {
                            // accept if active page has no children, or the
                            // children are too deep to be rendered
                            $accept = true;
                        }
                    }
                }

if (!$accept) {
                    continue;
                }
            }

// make sure indentation is correct
            $depth -= $minDepth;
            $myIndent = $indent . str_repeat('        ', $depth);

if ($depth > $prevDepth) {
                // start new ul tag
                if ($ulClass && $depth ==  0) {
                    $ulClass = ' class="' . $ulClass . '"';
                } else {
                    $ulClass = '';
                }
                $html .= $myIndent . '<ul' . $ulClass . '>' . self::EOL;
            } else if ($prevDepth > $depth) {
                // close li/ul tags until we're at current depth
                for ($i = $prevDepth; $i > $depth; $i--) {
                    $ind = $indent . str_repeat('        ', $i);
                    $html .= $ind . '    </li>' . self::EOL;
                    $html .= $ind . '</ul>' . self::EOL;
                }
                // close previous li tag
                $html .= $myIndent . '    </li>' . self::EOL;
            } else {
                // close previous li tag
                $html .= $myIndent . '    </li>' . self::EOL;
            }

// render li tag and page
            $html .= $myIndent . '    <li' . $this->getLiClass($page, $isActive) . '>' . self::EOL
                   . $myIndent . '        ' . $this->htmlify($page) . self::EOL;

// store as previous depth for next iteration
            $prevDepth = $depth;
        }

if ($html) {
            // done iterating container; close open ul/li tags
            for ($i = $prevDepth+1; $i > 0; $i--) {
                $myIndent = $indent . str_repeat('        ', $i-1);
                $html .= $myIndent . '    </li>' . self::EOL
                       . $myIndent . '</ul>' . self::EOL;
            }
            $html = rtrim($html, self::EOL);
        }

return $html;
    }
    public function htmlify(Zend_Navigation_Page $page) {
        $out = parent::htmlify($page);
        return $page->get('disabled') ? str_replace('<a', '<a onclick="return false;" ', $out) : $out;
    }
}

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