Have AphrontView implement PhutilSafeHTMLProducerInterface

Summary: Allows views to work like tags.

Test Plan: Implemented a few completely arbitrary render() / singleView simplifications. I just picked some that were easy to test. I'll do a more thorough pass on this in a followup; these calls don't really hurt anything.

Reviewers: chad, vrana

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D5306

src/__phutil_library_map__.php

@@ -1652,7 +1652,11 @@ phutil_register_library_map(array(
     'AphrontTokenizerTemplateView' => 'AphrontView',
     'AphrontTypeaheadTemplateView' => 'AphrontView',
     'AphrontUsageException' => 'AphrontException',
-    'AphrontView' => 'Phobject',
+    'AphrontView' =>
+    array(
+      0 => 'Phobject',
+      1 => 'PhutilSafeHTMLProducerInterface',
+    ),
     'AphrontWebpageResponse' => 'AphrontHTMLResponse',
     'AuditPeopleMenuEventListener' => 'PhutilEventListener',
     'CelerityPhabricatorResourceController' => 'CelerityResourceController',

src/applications/calendar/controller/PhabricatorCalendarBrowseController.php

@@ -54,7 +54,7 @@ final class PhabricatorCalendarBrowseController
     $nav->appendChild(
       array(
         $this->getNoticeView(),
-        hsprintf('<div style="padding: 20px;">%s</div>', $month_view->render()),
+        hsprintf('<div style="padding: 20px;">%s</div>', $month_view),
       ));
 
     return $this->buildApplicationPage(

src/applications/differential/view/DifferentialInlineCommentEditView.php

@@ -55,11 +55,10 @@ final class DifferentialInlineCommentEditView extends AphrontView {
         'method'    => 'POST',
         'sigil'     => 'inline-edit-form',
       ),
-      $this->renderSingleView(
       array(
         $this->renderInputs(),
         $this->renderBody(),
-        )));
+      ));
 
     return hsprintf(
       '<table>'.
@@ -130,12 +129,11 @@ final class DifferentialInlineCommentEditView extends AphrontView {
       array(
         'class' => 'differential-inline-comment-edit-buttons',
       ),
-      $this->renderSingleView(
       array(
         $formatting,
         $buttons,
         phutil_tag('div', array('style' => 'clear: both'), ''),
-        )));
+      ));
 
     return javelin_tag(
       'div',
@@ -148,12 +146,11 @@ final class DifferentialInlineCommentEditView extends AphrontView {
           'length' => $this->length,
         ),
       ),
-      $this->renderSingleView(
       array(
         $title,
         $body,
         $edit,
-        )));
+      ));
   }
 
 }

src/docs/developer/rendering_html.diviner

@@ -20,6 +20,7 @@ from XSS and render correctly. Broadly:
   - Combine elements with arrays, not string concatenation.
   - @{class:AphrontView} subclasses should return a
     @{class@libphutil:PhutilSafeHTML} object from their `render()` method.
+  - @{class:AphrontView} subclasses act like tags when rendering.
   - @{function:pht} has some special rules.
   - There are some other things that you should be aware of.
   - Do not use @{function:phutil_render_tag} or @{function:javelin_render_tag},
@@ -124,6 +125,10 @@ return `phutil_tag()` or `javelin_tag()`:
 
   return phutil_tag('div', ...);
 
+You can use an @{class:AphrontView} subclass like you would a tag:
+
+  phutil_tag('div', array(), $view);
+
 = Internationalization: pht() =
 
 The @{function:pht} function has some special rules. If any input to

src/view/AphrontView.php

@@ -1,6 +1,7 @@
 <?php
 
-abstract class AphrontView extends Phobject {
+abstract class AphrontView extends Phobject
+  implements PhutilSafeHTMLProducerInterface {
 
   protected $user;
   protected $children = array();
@@ -65,4 +66,8 @@ abstract class AphrontView extends Phobject {
 
   abstract public function render();
 
+  public function producePhutilSafeHTML() {
+    return $this->render();
+  }
+
 }

src/view/layout/PhabricatorPropertyListView.php

@@ -145,8 +145,7 @@ final class PhabricatorPropertyListView extends AphrontView {
 
     $shortcuts = null;
     if ($this->hasKeyboardShortcuts) {
-      $shortcuts =
+      $shortcuts = new AphrontKeyboardShortcutsAvailableView();
-        id(new AphrontKeyboardShortcutsAvailableView())->render();
     }
 
     return array(