Renderer.php

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<?php

/* Copyright (c) 2016 Richard Klees <richard.klees@concepts-and-training.de> Extended GPL, see docs/LICENSE */

namespace ILIAS\UI\Implementation\Component\Button;

use ILIAS\UI\Implementation\Render\AbstractComponentRenderer;
use ILIAS\UI\Renderer as RendererInterface;
use ILIAS\UI\Component;

class Renderer extends AbstractComponentRenderer {
        public function render(Component\Component $component, RendererInterface $default_renderer) {
                $this->checkComponent($component);

                if ($component instanceof Component\Button\Close) {
                        return $this->render_close($component);
                }
                else {
                        return $this->render_button($component, $default_renderer);
                }
        }

        protected function render_button(Component\Component $component, RendererInterface $default_renderer) {
                // TODO: Tt would be nice if we could use <button> for rendering a button
                // instead of <a>. This was not done atm, as there is no attribute on a
                // button to make it open an URL. This would require JS.

                if ($component instanceof Component\Button\Primary) {
                        $tpl_name = "tpl.primary.html";
                }
                if ($component instanceof Component\Button\Standard) {
                        $tpl_name = "tpl.standard.html";
                }
                
                $tpl = $this->getTemplate($tpl_name, true, true);
                $action = $component->getAction();
                // The action is always put in the data-action attribute to have it available
                // on the client side, even if it is not available on rendering.
                $tpl->setVariable("ACTION", $action);
                $label = $component->getLabel();
                if ($label !== null) {
                        $tpl->setVariable("LABEL", $component->getLabel());
                }
                if ($component->isActive()) {
                        $tpl->setCurrentBlock("with_href");
                        $tpl->setVariable("HREF", $action);
                        $tpl->parseCurrentBlock();
                }
                else {
                        $tpl->touchBlock("disabled");
                }

                $this->maybe_render_id($component, $tpl);

                return $tpl->get();
        }

        protected function render_close($component) {
                $tpl = $this->getTemplate("tpl.close.html", true, true);
                // This is required as the rendering seems to only create any output at all
                // if any var was set or block was touched.
                $tpl->setVariable("FORCE_RENDERING", "");
                $this->maybe_render_id($component, $tpl);
                return $tpl->get();
        }

        protected function maybe_render_id($component, $tpl) {
                $id = $this->bindJavaScript($component);
                if ($id !== null) {
                        $tpl->setCurrentBlock("with_id");
                        $tpl->setVariable("ID", $id);
                        $tpl->parseCurrentBlock();
                }
        }

        protected function getComponentInterfaceName() {
                return array
                        ( Component\Button\Primary::class
                        , Component\Button\Standard::class
                        , Component\Button\Close::class
                        );
        }
}