Fixed whitespace options in Differential.

Summary:
Whitespace options could not be selected and the 'ignore_all' was not working.

Test Plan:
Made sure that whitespace is ignored correctly and selected option is handled
correctly.

Reviewed By: jungejason
Reviewers: jungejason
CC: epriestley, jungejason, tuomaspelkonen
Differential Revision: 149

src/applications/differential/controller/changesetview/DifferentialChangesetViewController.php

@@ -132,6 +132,7 @@ class DifferentialChangesetViewController extends DifferentialController {
     $parser->setChangeset($changeset);
     $parser->setRightSideCommentMapping($right_source, $right_new);
     $parser->setLeftSideCommentMapping($left_source, $left_new);
+    $parser->setWhitespaceMode($request->getStr('whitespace'));
 
     $phids = array();
     $inlines = $this->loadInlineComments($id, $author_phid);

src/applications/differential/controller/revisionview/DifferentialRevisionViewController.php

@@ -173,6 +173,7 @@ class DifferentialRevisionViewController extends DifferentialController {
     $diff_history->setDiffs($diffs);
     $diff_history->setSelectedVersusDiffID($diff_vs);
     $diff_history->setSelectedDiffID($target->getID());
+    $diff_history->setSelectedWhitespace($request->getStr('whitespace'));
 
     $toc_view = new DifferentialDiffTableOfContentsView();
     $toc_view->setChangesets($changesets);
@@ -185,6 +186,7 @@ class DifferentialRevisionViewController extends DifferentialController {
     $changeset_view->setEditable(true);
     $changeset_view->setRevision($revision);
     $changeset_view->setVsMap($vs_map);
+    $changeset_view->setWhitespace($request->getStr('whitespace'));
 
     $draft = id(new PhabricatorDraft())->loadOneWhere(
       'authorPHID = %s AND draftKey = %s',

src/applications/differential/parser/changeset/DifferentialChangesetParser.php

@@ -675,10 +675,10 @@ EOSYNTHETIC;
 
           $diff = DifferentialDiff::newFromRawChanges($changes);
           $changesets = $diff->getChangesets();
-          $alt_changeset = reset($changesets);
+          $changeset = reset($changesets);
 
           $this->subparser = new DifferentialChangesetParser();
-          $this->subparser->setChangeset($alt_changeset);
+          $this->subparser->setChangeset($changeset);
           $this->subparser->setWhitespaceMode(self::WHITESPACE_IGNORE_TRAILING);
         }
         foreach ($changeset->getHunks() as $hunk) {

src/applications/differential/view/changesetlistview/DifferentialChangesetListView.php

@@ -23,6 +23,7 @@ class DifferentialChangesetListView extends AphrontView {
   private $revision;
   private $renderURI = '/differential/changeset/';
   private $vsMap = array();
+  private $whitespace = null;
 
   public function setChangesets($changesets) {
     $this->changesets = $changesets;
@@ -49,6 +50,11 @@ class DifferentialChangesetListView extends AphrontView {
     return $this;
   }
 
+  public function setWhitespace($whitespace) {
+    $this->whitespace = $whitespace;
+    return $this;
+  }
+
   public function render() {
     require_celerity_resource('differential-changeset-view-css');
 
@@ -77,7 +83,7 @@ class DifferentialChangesetListView extends AphrontView {
         array(
           'id'          => $ref,
           'vs'          => $vs_id,
-          'whitespace'  => 'TODO',
+          'whitespace'  => $this->whitespace,
         ));
 
       $detail_button = phutil_render_tag(
@@ -109,10 +115,9 @@ class DifferentialChangesetListView extends AphrontView {
         $vs_id);
     }
 
-    $whitespace = null;
     Javelin::initBehavior('differential-populate', array(
       'registry'    => $mapping,
-      'whitespace'  => $whitespace,
+      'whitespace'  => $this->whitespace,
       'uri'         => $this->renderURI,
     ));
 

src/applications/differential/view/revisionupdatehistory/DifferentialRevisionUpdateHistoryView.php

@@ -21,6 +21,7 @@ final class DifferentialRevisionUpdateHistoryView extends AphrontView {
   private $diffs = array();
   private $selectedVersusDiffID;
   private $selectedDiffID;
+  private $selectedWhitespace;
 
   public function setDiffs($diffs) {
     $this->diffs = $diffs;
@@ -37,6 +38,11 @@ final class DifferentialRevisionUpdateHistoryView extends AphrontView {
     return $this;
   }
 
+  public function setSelectedWhitespace($whitespace) {
+    $this->selectedWhitespace = $whitespace;
+    return $this;
+  }
+
   public function render() {
 
     require_celerity_resource('differential-core-view-css');
@@ -157,7 +163,25 @@ final class DifferentialRevisionUpdateHistoryView extends AphrontView {
           'radios' => $radios,
         ));
 
-    $select = '<select><option>Ignore All</option></select>';
+      $options = array(
+        'ignore-all' => 'Ignore All',
+        'ignore-trailing' => 'Ignore Trailing',
+        'show-all' => 'Show All',
+      );
+
+      $select = '<select name="whitespace">';
+      foreach ($options as $value => $label) {
+        $select .= phutil_render_tag(
+          'option',
+          array(
+            'value' => $value,
+            'selected' => ($value == $this->selectedWhitespace)
+            ? 'selected'
+            : null,
+          ),
+          phutil_escape_html($label));
+      }
+      $select .= '</select>';
 
     return
       '<div class="differential-revision-history differential-panel">'.