src/CoreBundle/EventListener/DcGeneral/Table/DcaSetting/TlClassWizardListener.php
public function handle(ManipulateWidgetEvent $event)
    {
        if (!($this->wantToHandle($event) && ('tl_class' === $event->getProperty()->getName()))) {
            return;
        }

        $link = ' <a href="%1$s" onclick="Backend.getScrollOffset();Backend.openModalIframe({' .
            '\'width\':765,' .
            '\'title\':\'%2$s\',' .
            '\'url\':this.href,' .
            '\'id\':\'%3$s\'' .
            '});return false">%4$s</a>';

        $image = $this->iconBuilder->getBackendIconImageTag(
            'bundles/metamodelscore/images/icons/dca_wizard.png',
            $event->getEnvironment()->getTranslator()->translate('stylepicker', 'tl_metamodel_dca'),
            'style="vertical-align:top;"'
        );

        $event->getWidget()->wizard = sprintf(
            $link,
            $this->urlGenerator->generate('metamodels.picker', [
                'tbl' => $event->getEnvironment()->getDataDefinition()->getName(),
                'fld' => $event->getProperty()->getName(),
                'inputName' => 'ctrl_' . $event->getProperty()->getName(),
                'id' => $event->getModel()->getId(),
                'item' => 'PALETTE_STYLE_PICKER',
            ]),
            addslashes($event->getEnvironment()->getTranslator()->translate('stylepicker', 'tl_metamodel_dca')),
            $event->getModel()->getId(),
            $image
        );
    }
public function handle(ManipulateWidgetEvent $event)
    {
        if (!($this->wantToHandle($event) && ('tl_class' === $event->getProperty()->getName()))) {
            return;
        }

        $link = ' <a href="%1$s" onclick="Backend.getScrollOffset();Backend.openModalIframe({' .
            '\'width\':765,' .
            '\'title\':\'%2$s\',' .
            '\'url\':this.href,' .
            '\'id\':\'%3$s\'' .
            '});return false">%4$s</a>';

        $image = $this->iconBuilder->getBackendIconImageTag(
            'bundles/metamodelscore/images/icons/dca_wizard.png',
            $event->getEnvironment()->getTranslator()->translate('stylepicker', 'tl_metamodel_dca'),
            'style="vertical-align:top;"'
        );

        $event->getWidget()->wizard = sprintf(
            $link,
            $this->urlGenerator->generate('metamodels.picker', [
                'tbl' => $event->getEnvironment()->getDataDefinition()->getName(),
                'fld' => $event->getProperty()->getName(),
                'inputName' => 'ctrl_' . $event->getProperty()->getName(),
                'id' => $event->getModel()->getId(),
                'item' => 'PALETTE_STYLE_PICKER',
            ]),
            addslashes($event->getEnvironment()->getTranslator()->translate('stylepicker', 'tl_metamodel_dca')),
            $event->getModel()->getId(),
            $image
        );
    }
Calculate the wizard.

@param ManipulateWidgetEvent $event The event.

@return void