Add a basic icon typeahead

Summary: Fixes T11971, adds a basic typeahead for selecting an icon.

Test Plan:
http://local.phacility.com/typeahead/browse/PhabricatorIconDatasource/

{F2561013}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T11971

Differential Revision: https://secure.phabricator.com/D17301

src/__phutil_library_map__.php

@@ -2848,6 +2848,7 @@ phutil_register_library_map(array(
     'PhabricatorIDsSearchEngineExtension' => 'applications/search/engineextension/PhabricatorIDsSearchEngineExtension.php',
     'PhabricatorIDsSearchField' => 'applications/search/field/PhabricatorIDsSearchField.php',
     'PhabricatorIRCProtocolAdapter' => 'infrastructure/daemon/bot/adapter/PhabricatorIRCProtocolAdapter.php',
+    'PhabricatorIconDatasource' => 'applications/files/typeahead/PhabricatorIconDatasource.php',
     'PhabricatorIconRemarkupRule' => 'applications/macro/markup/PhabricatorIconRemarkupRule.php',
     'PhabricatorIconSet' => 'applications/files/iconset/PhabricatorIconSet.php',
     'PhabricatorIconSetEditField' => 'applications/transactions/editfield/PhabricatorIconSetEditField.php',
@@ -7907,6 +7908,7 @@ phutil_register_library_map(array(
     'PhabricatorIDsSearchEngineExtension' => 'PhabricatorSearchEngineExtension',
     'PhabricatorIDsSearchField' => 'PhabricatorSearchField',
     'PhabricatorIRCProtocolAdapter' => 'PhabricatorProtocolAdapter',
+    'PhabricatorIconDatasource' => 'PhabricatorTypeaheadDatasource',
     'PhabricatorIconRemarkupRule' => 'PhutilRemarkupRule',
     'PhabricatorIconSet' => 'Phobject',
     'PhabricatorIconSetEditField' => 'PhabricatorEditField',

src/applications/files/typeahead/PhabricatorIconDatasource.php

@@ -0,0 +1,46 @@
+<?php
+
+final class PhabricatorIconDatasource extends PhabricatorTypeaheadDatasource {
+
+  public function getPlaceholderText() {
+    return pht('Type an icon name...');
+  }
+
+  public function getBrowseTitle() {
+    return pht('Browse Icons');
+  }
+
+  public function getDatasourceApplicationClass() {
+    return 'PhabricatorFilesApplication';
+  }
+
+  public function loadResults() {
+    $results = $this->buildResults();
+    return $this->filterResultsAgainstTokens($results);
+  }
+
+  protected function renderSpecialTokens(array $values) {
+    return $this->renderTokensFromResults($this->buildResults(), $values);
+  }
+
+  private function buildResults() {
+    $raw_query = $this->getRawQuery();
+
+    $icons = id(new PHUIIconView())->getIcons();
+
+    $results = array();
+    foreach ($icons as $icon) {
+      $display_name = str_replace('fa-', '', $icon);
+      $result = id(new PhabricatorTypeaheadResult())
+        ->setPHID($icon)
+        ->setName($icon)
+        ->setIcon($icon)
+        ->setDisplayname($display_name)
+        ->addAttribute($icon);
+
+      $results[$icon] = $result;
+    }
+    return $results;
+  }
+
+}