Provide a rudimentary "Attached Files" curtain UI panel

Summary: Ref T13682. Provide a basic UI element for showing file attached to an object.

Test Plan: Viewed objects with attached files in the UI.

Maniphest Tasks: T13682

Differential Revision: https://secure.phabricator.com/D21836

Author: epriestley

src/__phutil_library_map__.php

@@ -3508,6 +3508,7 @@
     'PhabricatorFileTransformController' => 'applications/files/controller/PhabricatorFileTransformController.php',
     'PhabricatorFileTransformListController' => 'applications/files/controller/PhabricatorFileTransformListController.php',
     'PhabricatorFileTransformTestCase' => 'applications/files/transform/__tests__/PhabricatorFileTransformTestCase.php',
+    'PhabricatorFileUICurtainListController' => 'applications/files/controller/PhabricatorFileUICurtainListController.php',
     'PhabricatorFileUploadController' => 'applications/files/controller/PhabricatorFileUploadController.php',
     'PhabricatorFileUploadDialogController' => 'applications/files/controller/PhabricatorFileUploadDialogController.php',
     'PhabricatorFileUploadException' => 'applications/files/exception/PhabricatorFileUploadException.php',
@@ -3521,6 +3522,7 @@
     'PhabricatorFilesComposeAvatarBuiltinFile' => 'applications/files/builtin/PhabricatorFilesComposeAvatarBuiltinFile.php',
     'PhabricatorFilesComposeIconBuiltinFile' => 'applications/files/builtin/PhabricatorFilesComposeIconBuiltinFile.php',
     'PhabricatorFilesConfigOptions' => 'applications/files/config/PhabricatorFilesConfigOptions.php',
+    'PhabricatorFilesCurtainExtension' => 'applications/files/engineextension/PhabricatorFilesCurtainExtension.php',
     'PhabricatorFilesManagementCatWorkflow' => 'applications/files/management/PhabricatorFilesManagementCatWorkflow.php',
     'PhabricatorFilesManagementCompactWorkflow' => 'applications/files/management/PhabricatorFilesManagementCompactWorkflow.php',
     'PhabricatorFilesManagementCycleWorkflow' => 'applications/files/management/PhabricatorFilesManagementCycleWorkflow.php',
@@ -9970,6 +9972,7 @@
     'PhabricatorFileTransformController' => 'PhabricatorFileController',
     'PhabricatorFileTransformListController' => 'PhabricatorFileController',
     'PhabricatorFileTransformTestCase' => 'PhabricatorTestCase',
+    'PhabricatorFileUICurtainListController' => 'PhabricatorFileController',
     'PhabricatorFileUploadController' => 'PhabricatorFileController',
     'PhabricatorFileUploadDialogController' => 'PhabricatorFileController',
     'PhabricatorFileUploadException' => 'Exception',
@@ -9983,6 +9986,7 @@
     'PhabricatorFilesComposeAvatarBuiltinFile' => 'PhabricatorFilesBuiltinFile',
     'PhabricatorFilesComposeIconBuiltinFile' => 'PhabricatorFilesBuiltinFile',
     'PhabricatorFilesConfigOptions' => 'PhabricatorApplicationConfigOptions',
+    'PhabricatorFilesCurtainExtension' => 'PHUICurtainExtension',
     'PhabricatorFilesManagementCatWorkflow' => 'PhabricatorFilesManagementWorkflow',
     'PhabricatorFilesManagementCompactWorkflow' => 'PhabricatorFilesManagementWorkflow',
     'PhabricatorFilesManagementCycleWorkflow' => 'PhabricatorFilesManagementWorkflow',

src/applications/files/application/PhabricatorFilesApplication.php

@@ -95,6 +95,8 @@ public function getRoutes() {
         ),
         'document/(?P<engineKey>[^/]+)/(?P<phid>[^/]+)/'
           => 'PhabricatorFileDocumentController',
+        'ui/curtainlist/(?P<phid>[^/]+)/'
+          => 'PhabricatorFileUICurtainListController',
       ) + $this->getResourceSubroutes(),
     );
   }

src/applications/files/controller/PhabricatorFileUICurtainListController.php

@@ -0,0 +1,61 @@
+<?php
+
+final class PhabricatorFileUICurtainListController
+  extends PhabricatorFileController {
+
+  public function shouldAllowPublic() {
+    return true;
+  }
+
+  public function handleRequest(AphrontRequest $request) {
+    $viewer = $request->getViewer();
+
+    $object_phid = $request->getURIData('phid');
+
+    $object = id(new PhabricatorObjectQuery())
+      ->setViewer($viewer)
+      ->withPHIDs(array($object_phid))
+      ->executeOne();
+    if (!$object) {
+      return new Aphront404Response();
+    }
+
+    $attachments = id(new PhabricatorFileAttachmentQuery())
+      ->setViewer($viewer)
+      ->withObjectPHIDs(array($object->getPHID()))
+      ->needFiles(true)
+      ->execute();
+
+    $handles = $viewer->loadHandles(array($object_phid));
+    $object_handle = $handles[$object_phid];
+
+    $file_phids = mpull($attachments, 'getFilePHID');
+    $file_handles = $viewer->loadHandles($file_phids);
+
+    $list = id(new PHUIObjectItemListView())
+      ->setUser($viewer);
+    foreach ($attachments as $attachment) {
+      $file_phid = $attachment->getFilePHID();
+      $handle = $file_handles[$file_phid];
+
+      $item = id(new PHUIObjectItemView())
+        ->setHeader($handle->getFullName())
+        ->setHref($handle->getURI())
+        ->setDisabled($handle->isDisabled());
+
+      if ($handle->getImageURI()) {
+        $item->setImageURI($handle->getImageURI());
+      }
+
+      $list->addItem($item);
+    }
+
+    return $this->newDialog()
+      ->setViewer($viewer)
+      ->setWidth(AphrontDialogView::WIDTH_FORM)
+      ->setTitle(pht('Attached Files'))
+      ->setObjectList($list)
+      ->addCancelButton($object_handle->getURI(), pht('Close'));
+  }
+
+}

src/applications/files/engineextension/PhabricatorFilesCurtainExtension.php

@@ -0,0 +1,89 @@
+<?php
+
+final class PhabricatorFilesCurtainExtension
+  extends PHUICurtainExtension {
+
+  const EXTENSIONKEY = 'files.files';
+
+  public function shouldEnableForObject($object) {
+    return true;
+  }
+
+  public function getExtensionApplication() {
+    return new PhabricatorFilesApplication();
+  }
+
+  public function buildCurtainPanel($object) {
+    $viewer = $this->getViewer();
+
+    $attachment_table = new PhabricatorFileAttachment();
+    $attachment_conn = $attachment_table->establishConnection('r');
+
+    $exact_limit = 100;
+    $visible_limit = 8;
+
+    $attachments = id(new PhabricatorFileAttachmentQuery())
+      ->setViewer($viewer)
+      ->withObjectPHIDs(array($object->getPHID()))
+      ->setLimit($exact_limit + 1)
+      ->needFiles(true)
+      ->execute();
+
+    $visible_attachments = array_slice($attachments, 0, $visible_limit, true);
+    $visible_phids = mpull($visible_attachments, 'getFilePHID');
+
+    $handles = $viewer->loadHandles($visible_phids);
+
+    PhabricatorPolicyFilterSet::loadHandleViewCapabilities(
+      $viewer,
+      $handles,
+      array($object));
+
+    $ref_list = id(new PHUICurtainObjectRefListView())
+      ->setViewer($viewer)
+      ->setEmptyMessage(pht('None'));
+
+    foreach ($visible_attachments as $attachment) {
+      $file_phid = $attachment->getFilePHID();
+      $handle = $handles[$file_phid];
+
+      $ref = $ref_list->newObjectRefView()
+        ->setHandle($handle);
+
+      if ($handle->hasCapabilities()) {
+        if (!$handle->hasViewCapability($object)) {
+          $ref->setExiled(true);
+        }
+      }
+
+      $epoch = $attachment->getDateCreated();
+      $ref->setEpoch($epoch);
+    }
+
+    $show_all = (count($visible_attachments) < count($attachments));
+    if ($show_all) {
+      $view_all_uri = urisprintf(
+        '/file/ui/curtainlist/%s/',
+        $object->getPHID());
+
+      $loaded_count = count($attachments);
+      if ($loaded_count > $exact_limit) {
+        $link_text = pht('View All Files');
+      } else {
+        $link_text = pht('View All %d Files', new PhutilNumber($loaded_count));
+      }
+
+      $ref_list->newTailLink()
+        ->setURI($view_all_uri)
+        ->setText($link_text)
+        ->setWorkflow(true);
+    }
+
+    return $this->newPanel()
+      ->setHeaderText(pht('Attached Files'))
+      ->setOrder(15000)
+      ->appendChild($ref_list);
+  }
+
+
+}