ModuleManagerController.php

<?php
class ModuleManagerController extends LeftAndMain
{

    public static $url_segment = 'module-manager';
    public static $url_rule = '/$Action/$ID/$OtherID';
    public static $menu_priority = -1;
    public static $url_priority = 40;
    public static $menu_title = 'Module Manager';
    public static $tree_class = 'ModuleManager';
    public static $menu_icon = 'module-manager/images/cms-icon.png';
    
    public function init()
    {
        parent::init();
        Requirements::javascript(CMS_DIR . '/javascript/CMSMain.EditForm.js');
    }

    public function getResponseNegotiator()
    {
        $neg = parent::getResponseNegotiator();
        $controller = $this;
        $neg->setCallback('CurrentForm', function () use (&$controller) {
            return $controller->renderWith($controller->getTemplatesWithSuffix('_Content'));
        });
        return $neg;
    }
    
    public function getEditForm($id = null, $fields = null)
    {
        
        // get the cmsfields from ModuleManager DataObject
        $moduleManager = ModuleManager::CurrentModuleManager();
        $fields = $moduleManager->getCMSFields();
        
        // what pages is this module active on
        $modulesGridField = GridField::create(
                "Modules_Gridfield",
                "Modules",
                Module::get(),
                $modulesGridFieldConfig = GridFieldConfig_RecordEditor::create()
            );
        $modulePositionsGridField = GridField::create(
                "ModulePositions_Gridfield",
                "Module Positions",
                ModulePosition::get(),
                GridFieldConfig_RecordEditor::create()
            );
        
        // add multiclass dropdown for modules
        $modulesGridFieldConfig->removeComponentsByType('GridFieldAddNewButton');
        $modulesGridFieldConfig->addComponent(new GridFieldAddNewMultiClass());
        
        // add the fields
        $fields->addFieldToTab('Root.Modules', $modulesGridField);
        $fields->addFieldToTab('Root.ModulePositions', $modulePositionsGridField);
        $fields->addFieldToTab('Root.ModulePositions', LiteralField::create('html', '<em>To load a position into your template, simply write <code>$ModulePosition(Alias)</code> where <code>Alias</code> is your position alias</em>'));
        
        // actions
        $actions = $moduleManager->getCMSActions();
        $form = CMSForm::create(
            $this, 'EditForm', $fields, $actions
        )->setHTMLID('Form_EditForm');
        $form->setResponseNegotiator($this->getResponseNegotiator());
        $form->addExtraClass('cms-content center cms-edit-form');
        // don't add data-pjax-fragment=CurrentForm, its added in the content template instead

        if ($form->Fields()->hasTabset()) {
            $form->Fields()->findOrMakeTab('Root')->setTemplate('CMSTabSet');
        }
        $form->setHTMLID('Form_EditForm');
        $form->loadDataFrom($moduleManager);
        $form->setTemplate($this->getTemplatesWithSuffix('_EditForm'));

        // Use <button> to allow full jQuery UI styling
        $actions = $actions->dataFields();
        if ($actions) {
            foreach ($actions as $action) {
                $action->setUseButtonTag(true);
            }
        }

        return $form;
    }
    
    public function getSilverStripeNavigator()
    {
        return $this->renderWith('CMSSettingsController_SilverStripeNavigator');
    }
    
    public function Breadcrumbs($unlinked = false)
    {
        $defaultTitle = self::menu_title_for_class(get_class($this));
        return new ArrayList(array(
            new ArrayData(array(
                'Title' => _t("{$this->class}.MENUTITLE", $defaultTitle),
                'Link' => false
            ))
        ));
    }
    
    // builds a list of all the module types (classes that extend Module)
    public function ModuleTypes()
    {
        $moduleTypes = array();
        $modules = Module::get();
        foreach ($modules as $module) {
            $moduleTypes[$module->ClassName] = array(
                    'ClassName' => $module->ClassName,
                    'Name' => $module->ModuleName(),
                    'Description' => $module->ModuleDescription()
                );
        }
        return $moduleTypes;
    }
}