phorge-phorge/src/applications/meta/controller/PhabricatorApplicationDetailViewController.php

<?php

final class PhabricatorApplicationDetailViewController
  extends PhabricatorApplicationsController{

  private $application;

  public function willProcessRequest(array $data) {
    $this->application = $data['application'];
  }

  public function processRequest() {
    $request = $this->getRequest();
    $user = $request->getUser();

    $selected = PhabricatorApplication::getByClass($this->application);

    if (!$selected) {
      return new Aphront404Response();
    }

    $title = $selected->getName();

    $crumbs = $this->buildApplicationCrumbs();
    $crumbs->addCrumb(
      id(new PhabricatorCrumbView())
        ->setName(pht('Applications'))
        ->setHref($this->getApplicationURI()));

   $properties = $this->buildPropertyView($selected);
   $actions = $this->buildActionView($user, $selected);

   return $this->buildApplicationPage(
    array(
      $crumbs,
      id(new PhabricatorHeaderView())->setHeader($title),
      $actions,
      $properties,
    ),
    array(
      'title' => $title,
      'device' => true,
    ));
  }

  private function buildPropertyView(PhabricatorApplication $selected) {
    $properties = new PhabricatorPropertyListView();

    if ($selected->isInstalled()) {
      $properties->addProperty(
        pht('Status'), pht('Installed'));

    } else {
      $properties->addProperty(
        pht('Status'), pht('Uninstalled'));
    }

    $properties->addProperty(
      pht('Description'), $selected->getShortDescription());

    return $properties;
  }

  private function buildActionView(
    PhabricatorUser $user, PhabricatorApplication $selected) {

    $view = id(new PhabricatorActionListView())
          ->setUser($user);

    if ($selected->canUninstall()) {
      if ($selected->isInstalled()) {
        $view->addAction(
               id(new PhabricatorActionView())
               ->setName(pht('Uninstall'))
               ->setIcon('delete')
               ->setHref(
                $this->getApplicationURI(get_class($selected).'/uninstall/'))
               );
      } else {
        $view->addAction(
               id(new PhabricatorActionView())
               ->setName(pht('Install'))
               ->setIcon('new')
               ->setHref(
                 $this->getApplicationURI(get_class($selected).'/install/'))
               );
      }
    } else {
      $view->addAction(
             id(new PhabricatorActionView())
             ->setName(pht('Uninstall'))
             ->setIcon('delete')
             ->setDisabled(true)
             ->setHref(
               $this->getApplicationURI(get_class($selected).'/uninstall/'))
             );
    }
    return $view;
  }

}