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<?php
class CMSPageAddController extends CMSPageEditController {

    private static $url_segment = 'pages/add';
    private static $url_rule = '/$Action/$ID/$OtherID';
    private static $url_priority = 42;
    private static $menu_title = 'Add page';
    private static $required_permission_codes = 'CMS_ACCESS_CMSMain';

    private static $allowed_actions = array(
        'AddForm',
        'doAdd',
        'doCancel'
    );

    /**
     * @return Form
     */
    public function AddForm() {
        $pageTypes = array();
        foreach($this->PageTypes() as $type) {
            $html = sprintf('<span class="page-icon class-%s"></span><strong class="title">%s</strong><span class="description">%s</span>',
                $type->getField('ClassName'),
                $type->getField('AddAction'),
                $type->getField('Description')
            );
            $pageTypes[$type->getField('ClassName')] = $html;
        }
        // Ensure generic page type shows on top
        if(isset($pageTypes['Page'])) {
            $pageTitle = $pageTypes['Page'];
            $pageTypes = array_merge(array('Page' => $pageTitle), $pageTypes);
        }

        $numericLabelTmpl = '<span class="step-label"><span class="flyout">%d</span><span class="arrow"></span><span class="title">%s</span></span>';

        $topTitle = _t('CMSPageAddController.ParentMode_top', 'Top level');
        $childTitle = _t('CMSPageAddController.ParentMode_child', 'Under another page');

        $fields = new FieldList(
            new LiteralField('PageModeHeader', sprintf($numericLabelTmpl, 1, _t('CMSMain.ChoosePageParentMode', 'Choose where to create this page'))),
            $parentModeField = new SelectionGroup(
                "ParentModeField",
                array(
                    new SelectionGroup_Item(
                        "top",
                        null,
                        $topTitle
                    ),
                    new SelectionGroup_Item(
                        'child',
                        $parentField = new TreeDropdownField(
                            "ParentID", 
                            "",
                            'SiteTree',
                            'ID',
                            'TreeTitle'
                        ),
                        $childTitle
                    )
                )
            ),
            $typeField = new OptionsetField(
                "PageType", 
                sprintf($numericLabelTmpl, 2, _t('CMSMain.ChoosePageType', 'Choose page type')), 
                $pageTypes,
                'Page'
            ),
            new LiteralField(
                'RestrictedNote',
                sprintf(
                    '<p class="message notice message-restricted">%s</p>',
                    _t(
                        'CMSMain.AddPageRestriction', 
                        'Note: Some page types are not allowed for this selection'
                    )
                )
            )
        );
        $parentField->setSearchFunction(function ($sourceObject, $labelField, $search) {
            return DataObject::get(
                $sourceObject, 
                sprintf(
                    ""MenuTitle" LIKE '%%%s%%' OR "Title" LIKE '%%%s%%'",
                    Convert::raw2sql($search),
                    Convert::raw2sql($search)
                )
            );
        });

        // TODO Re-enable search once it allows for HTML title display, 
        // see http://open.silverstripe.org/ticket/7455
        // $parentField->setShowSearch(true);
        
        $parentModeField->addExtraClass('parent-mode');

        // CMSMain->currentPageID() automatically sets the homepage,
        // which we need to counteract in the default selection (which should default to root, ID=0)
        if($parentID = $this->getRequest()->getVar('ParentID')) {
            $parentModeField->setValue('child');
            $parentField->setValue((int)$parentID);
        } else {
            $parentModeField->setValue('top');
        }
        
        $actions = new FieldList(
            FormAction::create("doAdd", _t('CMSMain.Create',"Create"))
                ->addExtraClass('ss-ui-action-constructive')->setAttribute('data-icon', 'accept')
                ->setUseButtonTag(true),
            FormAction::create("doCancel", _t('CMSMain.Cancel',"Cancel"))
                ->addExtraClass('ss-ui-action-destructive ss-ui-action-cancel')
                ->setUseButtonTag(true)
        );
        
        $this->extend('updatePageOptions', $fields);
        
        $form = CMSForm::create( 
            $this, "AddForm", $fields, $actions
        )->setHTMLID('Form_AddForm');
        $form->setAttribute('data-hints', $this->SiteTreeHints());
        $form->setAttribute('data-childfilter', $this->Link('childfilter'));

        $form->setResponseNegotiator($this->getResponseNegotiator());
        $form->addExtraClass('cms-add-form stacked cms-content center cms-edit-form ' . $this->BaseCSSClasses());
        $form->setTemplate($this->getTemplatesWithSuffix('_EditForm'));

        return $form;
    }

    public function doAdd($data, $form) {
        $className = isset($data['PageType']) ? $data['PageType'] : "Page";
        $parentID = isset($data['ParentID']) ? (int)$data['ParentID'] : 0;

        $suffix = isset($data['Suffix']) ? "-" . $data['Suffix'] : null;

        if(!$parentID && isset($data['Parent'])) {
            $page = SiteTree::get_by_link($data['Parent']);
            if($page) $parentID = $page->ID;
        }

        if(is_numeric($parentID) && $parentID > 0) $parentObj = DataObject::get_by_id("SiteTree", $parentID);
        else $parentObj = null;
        
        if(!$parentObj || !$parentObj->ID) $parentID = 0;

        if(!singleton($className)->canCreate(Member::currentUser(), array('Parent' => $parentObj))) {
            return Security::permissionFailure($this);
        }

        $record = $this->getNewItem("new-$className-$parentID".$suffix, false);
        if(class_exists('Translatable') && $record->hasExtension('Translatable') && isset($data['Locale'])) {
            $record->Locale = $data['Locale'];
        }

        try {
            $record->write();
        } catch(ValidationException $ex) {
            $form->sessionMessage($ex->getResult()->message(), 'bad');
            return $this->getResponseNegotiator()->respond($this->getRequest());
        }

        $editController = singleton('CMSPageEditController');
        $editController->setCurrentPageID($record->ID);

        Session::set(
            "FormInfo.Form_EditForm.formError.message", 
            _t('CMSMain.PageAdded', 'Successfully created page')
        );
        Session::set("FormInfo.Form_EditForm.formError.type", 'good');
        
        return $this->redirect(Controller::join_links(singleton('CMSPageEditController')->Link('show'), $record->ID));
    }

    public function doCancel($data, $form) {
        return $this->redirect(singleton('CMSMain')->Link());
    }

}