Provide character position information to symbol queries

Summary: Depends on D18937. Ref T13047. When available, provide character positions so external indexers can return more accurate results.

Test Plan: Clicked symbols in Safari, Firefox and Chrome, got sensible-looking character positions.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13047

Differential Revision: https://secure.phabricator.com/D18939

resources/celerity/map.php

@@ -13,7 +13,7 @@ return array(
     'core.pkg.js' => '4c79d74f',
     'darkconsole.pkg.js' => '1f9a31bc',
     'differential.pkg.css' => '45951e9e',
-    'differential.pkg.js' => 'c1af2de3',
+    'differential.pkg.js' => 'b69ae3ec',
     'diffusion.pkg.css' => 'a2d17c7d',
     'diffusion.pkg.js' => '6134c5a1',
     'favicon.ico' => '30672e08',
@@ -443,7 +443,7 @@ return array(
     'rsrc/js/application/releeph/releeph-preview-branch.js' => 'b2b4fbaf',
     'rsrc/js/application/releeph/releeph-request-state-change.js' => 'a0b57eb8',
     'rsrc/js/application/releeph/releeph-request-typeahead.js' => 'de2e896f',
-    'rsrc/js/application/repository/repository-crossreference.js' => 'c5627622',
+    'rsrc/js/application/repository/repository-crossreference.js' => 'fc2d8ffd',
     'rsrc/js/application/search/behavior-reorder-profile-menu-items.js' => 'e2e0a072',
     'rsrc/js/application/search/behavior-reorder-queries.js' => 'e9581f08',
     'rsrc/js/application/slowvote/behavior-slowvote-embed.js' => '887ad43f',
@@ -692,7 +692,7 @@ return array(
     'javelin-behavior-reorder-applications' => '76b9fc3e',
     'javelin-behavior-reorder-columns' => 'e1d25dfb',
     'javelin-behavior-reorder-profile-menu-items' => 'e2e0a072',
-    'javelin-behavior-repository-crossreference' => 'c5627622',
+    'javelin-behavior-repository-crossreference' => 'fc2d8ffd',
     'javelin-behavior-scrollbar' => '834a1173',
     'javelin-behavior-search-reorder-queries' => 'e9581f08',
     'javelin-behavior-select-content' => 'bf5374ef',
@@ -1922,12 +1922,6 @@ return array(
       'javelin-stratcom',
       'phabricator-tooltip',
     ),
-    'c5627622' => array(
-      'javelin-behavior',
-      'javelin-dom',
-      'javelin-stratcom',
-      'javelin-uri',
-    ),
     'c587b80f' => array(
       'javelin-install',
     ),
@@ -2165,6 +2159,12 @@ return array(
       'javelin-install',
       'javelin-dom',
     ),
+    'fc2d8ffd' => array(
+      'javelin-behavior',
+      'javelin-dom',
+      'javelin-stratcom',
+      'javelin-uri',
+    ),
     'fc91ab6c' => array(
       'javelin-behavior',
       'javelin-dom',

src/applications/diffusion/controller/DiffusionSymbolController.php

@@ -69,6 +69,13 @@ final class DiffusionSymbolController extends DiffusionController {
       $external_query->withLines(array($request->getInt('line')));
     }
 
+    if ($request->getInt('char')) {
+      $external_query->withCharacterPositions(
+        array(
+          $request->getInt('char'),
+        ));
+    }
+
     if ($repos) {
       $external_query->withRepositories($repos);
     }

src/applications/diffusion/symbol/DiffusionExternalSymbolQuery.php

@@ -9,6 +9,7 @@ final class DiffusionExternalSymbolQuery extends Phobject {
   private $paths = array();
   private $lines = array();
   private $repositories = array();
+  private $characterPositions = array();
 
   public function withLanguages(array $languages) {
     $this->languages = $languages;
@@ -40,6 +41,11 @@ final class DiffusionExternalSymbolQuery extends Phobject {
     return $this;
   }
 
+  public function withCharacterPositions(array $positions) {
+    $this->characterPositions = $positions;
+    return $this;
+  }
+
   public function withRepositories(array $repositories) {
     assert_instances_of($repositories, 'PhabricatorRepository');
     $this->repositories = $repositories;
@@ -74,6 +80,10 @@ final class DiffusionExternalSymbolQuery extends Phobject {
     return $this->repositories;
   }
 
+  public function getCharacterPositions() {
+    return $this->characterPositions;
+  }
+
   public function matchesAnyLanguage(array $languages) {
     return (!$this->languages) || array_intersect($languages, $this->languages);
   }

webroot/rsrc/js/application/repository/repository-crossreference.js

@@ -28,7 +28,7 @@ JX.behavior('repository-crossreference', function(config, statics) {
     nf : 'function',
     na : null,
     nb : 'builtin',
-    n : null,
+    n : null
   };
 
   function link(element, lang) {
@@ -58,8 +58,15 @@ JX.behavior('repository-crossreference', function(config, statics) {
           // Continue if we're not inside an inline comment.
         }
 
+        // If only part of the symbol was edited, the symbol name itself will
+        // have another "<span />" inside of it which highlights only the
+        // edited part. Skip over it.
+        if (JX.DOM.isNode(target, 'span') && (target.className === 'bright')) {
+          target = target.parentNode;
+        }
+
         if (e.getType() === 'mouseover') {
-          while (target !== document.body) {
+          while (target && target !== document.body) {
             if (JX.DOM.isNode(target, 'span') &&
                (target.className in class_map)) {
               highlighted = target;
@@ -107,6 +114,11 @@ JX.behavior('repository-crossreference', function(config, statics) {
       query.path = path;
     }
 
+    var char = getChar(target);
+    if (char !== null) {
+      query.char = char;
+    }
+
     var uri = JX.$U('/diffusion/symbol/' + symbol + '/');
     uri.addQueryParams(query);
     window.open(uri);
@@ -173,6 +185,32 @@ JX.behavior('repository-crossreference', function(config, statics) {
     return JX.Stratcom.getData(changeset).path;
   }
 
+  function getChar(target) {
+    var cell = JX.DOM.findAbove(target, 'td');
+    if (!cell) {
+      return null;
+    }
+
+    var char = 1;
+    for (var ii = 0; ii < cell.childNodes.length; ii++) {
+      var node = cell.childNodes[ii];
+
+      if (node === target) {
+        return char;
+      }
+
+      var content = '' + node.textContent;
+
+      // Strip off any ZWS characters. These are marker characters used to
+      // improve copy/paste behavior.
+      content = content.replace(/\u200B/g, '');
+
+      char += content.length;
+    }
+
+    return null;
+  }
+
   if (config.container) {
     link(JX.$(config.container), config.lang);
   } else if (config.section) {