Add link custom field.

Summary: Ref T3868. Adds a link custom field that verifies and links to the text provided.

Test Plan: Add a custom field with type "link", then enter a well-formed URL in the provided box in the edit task screen. Verify that the URL displays correctly on the task display page.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T3868

Differential Revision: https://secure.phabricator.com/D12543

src/__phutil_library_map__.php

@@ -2544,6 +2544,7 @@ phutil_register_library_map(array(
     'PhabricatorStandardCustomFieldHeader' => 'infrastructure/customfield/standard/PhabricatorStandardCustomFieldHeader.php',
     'PhabricatorStandardCustomFieldInt' => 'infrastructure/customfield/standard/PhabricatorStandardCustomFieldInt.php',
     'PhabricatorStandardCustomFieldInterface' => 'infrastructure/customfield/interface/PhabricatorStandardCustomFieldInterface.php',
+    'PhabricatorStandardCustomFieldLink' => 'infrastructure/customfield/standard/PhabricatorStandardCustomFieldLink.php',
     'PhabricatorStandardCustomFieldPHIDs' => 'infrastructure/customfield/standard/PhabricatorStandardCustomFieldPHIDs.php',
     'PhabricatorStandardCustomFieldRemarkup' => 'infrastructure/customfield/standard/PhabricatorStandardCustomFieldRemarkup.php',
     'PhabricatorStandardCustomFieldSelect' => 'infrastructure/customfield/standard/PhabricatorStandardCustomFieldSelect.php',
@@ -5971,6 +5972,7 @@ phutil_register_library_map(array(
     'PhabricatorStandardCustomFieldDate' => 'PhabricatorStandardCustomField',
     'PhabricatorStandardCustomFieldHeader' => 'PhabricatorStandardCustomField',
     'PhabricatorStandardCustomFieldInt' => 'PhabricatorStandardCustomField',
+    'PhabricatorStandardCustomFieldLink' => 'PhabricatorStandardCustomField',
     'PhabricatorStandardCustomFieldPHIDs' => 'PhabricatorStandardCustomField',
     'PhabricatorStandardCustomFieldRemarkup' => 'PhabricatorStandardCustomField',
     'PhabricatorStandardCustomFieldSelect' => 'PhabricatorStandardCustomField',

src/infrastructure/customfield/standard/PhabricatorStandardCustomFieldLink.php

@@ -0,0 +1,84 @@
+<?php
+
+final class PhabricatorStandardCustomFieldLink
+  extends PhabricatorStandardCustomField {
+
+  public function getFieldType() {
+    return 'link';
+  }
+
+  public function buildFieldIndexes() {
+    $indexes = array();
+
+    $value = $this->getFieldValue();
+    if (strlen($value)) {
+      $indexes[] = $this->newStringIndex($value);
+    }
+
+    return $indexes;
+  }
+
+  public function renderPropertyViewValue(array $handles) {
+    $value = $this->getFieldValue();
+
+    if (!strlen($value)) {
+      return null;
+    }
+
+    if (!PhabricatorEnv::isValidRemoteURIForLink($value)) {
+      return $value;
+    }
+
+    return phutil_tag(
+      'a',
+      array('href' => $value, 'target' => '_blank'),
+      $value);
+  }
+
+  public function readApplicationSearchValueFromRequest(
+    PhabricatorApplicationSearchEngine $engine,
+    AphrontRequest $request) {
+
+    return $request->getStr($this->getFieldKey());
+  }
+
+  public function applyApplicationSearchConstraintToQuery(
+    PhabricatorApplicationSearchEngine $engine,
+    PhabricatorCursorPagedPolicyAwareQuery $query,
+    $value) {
+
+    if (strlen($value)) {
+      $query->withApplicationSearchContainsConstraint(
+        $this->newStringIndex(null),
+        $value);
+    }
+  }
+
+  public function appendToApplicationSearchForm(
+    PhabricatorApplicationSearchEngine $engine,
+    AphrontFormView $form,
+    $value,
+    array $handles) {
+
+    $form->appendChild(
+      id(new AphrontFormTextControl())
+        ->setLabel($this->getFieldName())
+        ->setName($this->getFieldKey())
+        ->setValue($value));
+  }
+
+  public function shouldAppearInHerald() {
+    return true;
+  }
+
+  public function getHeraldFieldConditions() {
+    return array(
+      HeraldAdapter::CONDITION_CONTAINS,
+      HeraldAdapter::CONDITION_NOT_CONTAINS,
+      HeraldAdapter::CONDITION_IS,
+      HeraldAdapter::CONDITION_IS_NOT,
+      HeraldAdapter::CONDITION_REGEXP,
+    );
+  }
+
+}