NavigationPanel.php

<?php
/**
 * NavigationPanel for Nette 2.0. Fast navigation for developers.
 *
 * @author Mikuláš Dítě
 * @license MIT
 */
namespace Panel;

use Nette\Object;
use Nette\Diagnostics\IBarPanel;
use Nette\Diagnostics\Debugger;
use Nette\Templating\FileTemplate;
use Nette\Utils\Finder;
use Nette\Utils\Strings as String;
use Nette\Utils\SafeStream;
use Nette\Latte\Engine;
use Nette\Application\UI\Presenter;


class Navigation extends Object implements IBarPanel
{
    /** @var Presenter */
    private $presenter;

    public function __construct(Presenter $presenter)
    {
        $this->presenter = $presenter;
        //Debugger::addPanel($this);
    }

    /**
     * Renders HTML code for custom tab
     * IDebugPanel
     * @return void
     */
    public function getTab()
    {
        return '<img src="data:image/png;base64,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">' .
            'Navigation';
    }

    /**
     * Renders HTML code for custom panel
     * IDebugPanel
     * @return void
     */
    function getPanel()
    {
        ob_start();
        $template = new FileTemplate(dirname(__FILE__) . '/bar.navigation.panel.latte');
        $template->registerFilter(new Engine());
        $template->tree = $this->getPresenters();
        $template->render();
        return $cache['output'] = ob_get_clean();
    }

    /**
     * Returns panel ID
     * IDebugPanel
     * @return string
     */
    function getId()
    {
        return __CLASS__;
    }

    /**
     * Registers panel to Debug bar
     */
    static function register(Presenter $presenter)
    {
        Debugger::addPanel(new self($presenter));
    }

    /**
     * @return array
     */
    private function getPresenters()
    {
        @SafeStream::register(); //intentionally @ (prevents multiple registration warning)

        $tree = array();

        foreach (Finder::findFiles('*Presenter.php')->from($this->presenter->context->parameters['appDir']) as $path => $file) {
            $data = $this->processPresenter($file);
            if ($data === FALSE) {
                continue;
            }

            list($module, $presenter, $actions) = $data;
            $tree[$module][$presenter] = $actions;
        }

        foreach (Finder::findFiles('*.latte', '*.phtml')->from($this->presenter->context->parameters['appDir']) as $path => $file) {
            $data = $this->processTemplate($file);
            if ($data === FALSE) {
                continue;
            }

            list($module, $presenter, $action) = $data;

            if (!isset($tree[$module][$presenter])) {
                $tree[$module][$presenter] = array();
            }
            if (array_search($action, $tree[$module][$presenter]) === FALSE) {
                $tree[$module][$presenter][] = $action;
            }
        }

        $tree = $this->removeSystemPresenters($tree);
        return $tree;
    }

    /**
     * @param array $array
     * @return int
     */
    public static function getRowspan(array $array)
    {
        $size = 0;
        foreach ($array as $content) {
            $size += count($content);
        }
        return $size;
    }

    /**
     * Removes presenters such as Error etc.
     * @param array $tree
     */
    public function removeSystemPresenters($tree)
    {
        unset($tree[NULL]['Error']);
        return $tree;
    }

    /**
     * @param \SplFileInfo $file
     */
    private function processPresenter($file)
    {
        $stream = fopen("safe://" . $file->getRealPath(), 'r');
        $content = fread($stream, filesize("safe://" . $file->getRealPath()));
        fclose($stream);

        $module = String::match($content, '~(^|;)\s*namespace (?P<name>[A-z0-9_-]+)Module;~m');
        $module = $module['name'];

        $presenter = String::match($content, '~(^|;)\s*(?:final\s*)?class (?P<name>[A-z0-9_-]+)Presenter(\s|$)~m');
        if ($presenter === NULL || $presenter['name'] === 'Error') {
            return FALSE;
        }
        $presenter = $presenter['name'];

        $actions = array();
        foreach (String::matchAll($content, '~function (action|render)(?P<name>[A-z0-9_-]+)(\s|\\()~') as $action) {
            $action = lcfirst($action['name']);
            if (array_search($action, $actions) === FALSE) {
                $actions[] = $action;
            }
        }
        return array($module, $presenter, $actions);
    }

    /**
     * @param \SplFileInfo $file
     */
    public function processTemplate($file)
    {
        $match = String::match($file->getRealPath(), '~(?:(?P<module>[A-z0-9_-]+)Module)?/templates/(?P<presenter>[A-z0-9_-]+)/(?P<action>[A-z0-9_-]+)\.(latte|phtml)$~m');

        if (!$match) {
            return FALSE;
        }

        $module = $match['module'];
        $presenter = $match['presenter'];
        $action = $match['action'];

        return array($module, $presenter, $action);
    }

}