silverstripe-reports/code/ReportAdmin.php

<?php
/**
 * Reports section of the CMS.
 * 
 * All reports that should show in the ReportAdmin section
 * of the CMS need to subclass {@link SS_Report}, and implement
 * the appropriate methods and variables that are required.
 * 
 * @see SS_Report
 * 
 * @package reports
 */
class ReportAdmin extends LeftAndMain implements PermissionProvider
{
    
    private static $url_segment = 'reports';
    
    private static $url_rule = '/$ReportClass/$Action';
    
    private static $menu_title = 'Reports';
    
    private static $template_path = null; // defaults to (project)/templates/email

    private static $tree_class = 'SS_Report';

    private static $url_handlers = array(
        '$ReportClass/$Action' => 'handleAction'
    );

    /**
     * Variable that describes which report we are currently viewing based on 
     * the URL (gets set in init method).
     *
     * @var string
     */
    protected $reportClass;

    protected $reportObject;
    
    public function init()
    {
        parent::init();

        //set the report we are currently viewing from the URL
        $this->reportClass = (isset($this->urlParams['ReportClass']) && $this->urlParams['ReportClass'] !== 'index')
            ? $this->urlParams['ReportClass']
            : null;
        $allReports = SS_Report::get_reports();
        $this->reportObject = (isset($allReports[$this->reportClass])) ? $allReports[$this->reportClass] : null;

        // Set custom options for TinyMCE specific to ReportAdmin
        HtmlEditorConfig::get('cms')->setOption('content_css', project() . '/css/editor.css');
        HtmlEditorConfig::get('cms')->setOption('Lang', i18n::get_tinymce_lang());

        // Always block the HtmlEditorField.js otherwise it will be sent with an ajax request
        Requirements::block(FRAMEWORK_DIR . '/javascript/HtmlEditorField.js');
        Requirements::javascript(REPORTS_DIR . '/javascript/ReportAdmin.js');
    }

    /**
     * Does the parent permission checks, but also
     * makes sure that instantiatable subclasses of
     * {@link Report} exist. By default, the CMS doesn't
     * include any Reports, so there's no point in showing
     *
     * @param Member $member
     * @return boolean
     */
    public function canView($member = null)
    {
        if (!$member && $member !== false) {
            $member = Member::currentUser();
        }

        if (!parent::canView($member)) {
            return false;
        }

        $hasViewableSubclasses = false;
        foreach ($this->Reports() as $report) {
            if ($report->canView($member)) {
                return true;
            }
        }

        return false;
    }

    /**
     * Return a SS_List of SS_Report subclasses
     * that are available for use.
     *
     * @return SS_List
     */
    public function Reports()
    {
        $output = new ArrayList();
        foreach (SS_Report::get_reports() as $report) {
            if ($report->canView()) {
                $output->push($report);
            }
        }
        return $output;
    }

    /**
     * Determine if we have reports and need
     * to display the "Reports" main menu item
     * in the CMS.
     *
     * The test for an existance of a report
     * is done by checking for a subclass of
     * "SS_Report" that exists.
     *
     * @return boolean
     */
    public static function has_reports()
    {
        return sizeof(SS_Report::get_reports()) > 0;
    }

    /**
     * Returns the Breadcrumbs for the ReportAdmin
     * @return ArrayList
     */
    public function Breadcrumbs($unlinked = false)
    {
        $items = parent::Breadcrumbs($unlinked);
        
        // The root element should explicitly point to the root node.
        // Uses session state for current record otherwise.
        $items[0]->Link = singleton('ReportAdmin')->Link();

        if ($this->reportObject) {
            //build breadcrumb trail to the current report
            $items->push(new ArrayData(array(
                    'Title' => $this->reportObject->title(),
                    'Link' => Controller::join_links($this->Link(), '?' . http_build_query(array('q' => $this->request->requestVar('q'))))
                )));
        }

        return $items;
    }

    /**
     * Returns the link to the report admin section, or the specific report that is currently displayed
     * @return String
     */
    public function Link($action = null)
    {
        if ($this->reportObject) {
            $link = $this->reportObject->getLink($action);
        } else {
            $link = self::join_links(parent::Link('index'), $action);
        }
        return $link;
    }

    public function providePermissions()
    {
        $title = _t("ReportAdmin.MENUTITLE", LeftAndMain::menu_title_for_class($this->class));
        return array(
            "CMS_ACCESS_ReportAdmin" => array(
                'name' => _t('CMSMain.ACCESS', "Access to '{title}' section", array('title' => $title)),
                'category' => _t('Permission.CMS_ACCESS_CATEGORY', 'CMS Access')
            )
        );
    }

    public function getEditForm($id = null, $fields = null)
    {
        $report = $this->reportObject;
        if ($report) {
            $fields = $report->getCMSFields();
        } else {
            // List all reports
            $fields = new FieldList();
            $gridFieldConfig = GridFieldConfig::create()->addComponents(
                new GridFieldToolbarHeader(),
                new GridFieldSortableHeader(),
                new GridFieldDataColumns(),
                new GridFieldFooter()
            );
            $gridField = new GridField('Reports', false, $this->Reports(), $gridFieldConfig);
            $columns = $gridField->getConfig()->getComponentByType('GridFieldDataColumns');
            $columns->setDisplayFields(array(
                'title' => _t('ReportAdmin.ReportTitle', 'Title'),
            ));

            $columns->setFieldFormatting(array(
                    'title' => '<a href=\"$Link\" class=\"cms-panel-link\">$value ($Count)</a>'
                ));
            $gridField->addExtraClass('all-reports-gridfield');
            $fields->push($gridField);
        }

        $actions = new FieldList();
        $form = new Form($this, "EditForm", $fields, $actions);
        $form->addExtraClass('cms-edit-form cms-panel-padded center ' . $this->BaseCSSClasses());
        $form->loadDataFrom($this->request->getVars());

        $this->extend('updateEditForm', $form);

        return $form;
    }
}