Rough implementation of the "Add Meme" button

Summary: This needs some tweaks but I'll follow up with @DeedyDas in T2353.

Test Plan: So many memes.

Reviewers: chad, btrahan, DeedyDas

Reviewed By: chad

CC: aran

Maniphest Tasks: T2353

Differential Revision: https://secure.phabricator.com/D4616

src/__phutil_library_map__.php

@@ -1122,6 +1122,7 @@ phutil_register_library_map(array(
     'PhabricatorRemarkupRuleImageMacro' => 'infrastructure/markup/rule/PhabricatorRemarkupRuleImageMacro.php',
     'PhabricatorRemarkupRuleManiphest' => 'infrastructure/markup/rule/PhabricatorRemarkupRuleManiphest.php',
     'PhabricatorRemarkupRuleManiphestHandle' => 'infrastructure/markup/rule/handle/PhabricatorRemarkupRuleManiphestHandle.php',
+    'PhabricatorRemarkupRuleMeme' => 'infrastructure/markup/rule/PhabricatorRemarkupRuleMeme.php',
     'PhabricatorRemarkupRuleMention' => 'infrastructure/markup/rule/PhabricatorRemarkupRuleMention.php',
     'PhabricatorRemarkupRuleObjectHandle' => 'infrastructure/markup/rule/PhabricatorRemarkupRuleObjectHandle.php',
     'PhabricatorRemarkupRuleObjectName' => 'infrastructure/markup/rule/PhabricatorRemarkupRuleObjectName.php',
@@ -2499,6 +2500,7 @@ phutil_register_library_map(array(
     'PhabricatorRemarkupRuleImageMacro' => 'PhutilRemarkupRule',
     'PhabricatorRemarkupRuleManiphest' => 'PhabricatorRemarkupRuleObjectName',
     'PhabricatorRemarkupRuleManiphestHandle' => 'PhabricatorRemarkupRuleObjectHandle',
+    'PhabricatorRemarkupRuleMeme' => 'PhutilRemarkupRule',
     'PhabricatorRemarkupRuleMention' => 'PhutilRemarkupRule',
     'PhabricatorRemarkupRuleObjectHandle' => 'PhutilRemarkupRule',
     'PhabricatorRemarkupRuleObjectName' => 'PhutilRemarkupRule',

src/infrastructure/markup/PhabricatorMarkupEngine.php

@@ -419,6 +419,7 @@ final class PhabricatorMarkupEngine {
 
     if ($options['macros']) {
       $rules[] = new PhabricatorRemarkupRuleImageMacro();
+      $rules[] = new PhabricatorRemarkupRuleMeme();
     }
 
     $rules[] = new PhabricatorRemarkupRuleMention();

src/infrastructure/markup/rule/PhabricatorRemarkupRuleMeme.php

@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * @group markup
+ */
+final class PhabricatorRemarkupRuleMeme
+  extends PhutilRemarkupRule {
+
+  private $images;
+
+  public function apply($text) {
+    return preg_replace_callback(
+      '@{meme,([^}]+)}$@m',
+      array($this, 'markupMeme'),
+      $text);
+  }
+
+  public function markupMeme($matches) {
+    $options = array(
+      'src' => null,
+      'above' => null,
+      'below' => null,
+    );
+
+    $parser = new PhutilSimpleOptions();
+    $options = $parser->parse($matches[1]) + $options;
+
+    $uri = id(new PhutilURI('/macro/meme/'))
+      ->alter('macro', $options['src'])
+      ->alter('uppertext', $options['above'])
+      ->alter('lowertext', $options['below']);
+
+    $img = phutil_render_tag(
+      'img',
+      array(
+        'src' => (string)$uri,
+      ));
+
+    return $this->getEngine()->storeText($img);
+  }
+
+}

src/view/form/control/PhabricatorRemarkupControl.php

@@ -49,6 +49,12 @@ final class PhabricatorRemarkupControl extends AphrontFormTextAreaControl {
       'table' => array(
         'tip' => pht('Table'),
       ),
+      array(
+        'spacer' => true,
+      ),
+      'meme' => array(
+        'tip' => pht('Meme'),
+      ),
       'help'  => array(
         'tip' => pht('Help'),
         'align' => 'right',

webroot/rsrc/js/application/core/behavior-phabricator-remarkup-assist.js

@@ -59,6 +59,17 @@ JX.behavior('phabricator-remarkup-assist', function(config) {
       case 'table':
         update(area, (r.start == 0 ? '' : '\n\n') + '| ', sel || 'data', ' |');
         break;
+      case 'meme':
+        new JX.Workflow('/macro/meme/create/')
+          .setHandler(function(response) {
+            update(
+              area,
+              '',
+              sel,
+              (r.start == 0 ? '' : '\n\n') + response.text + '\n\n');
+          })
+          .start();
+        break;
     }
   }