Pass through installer errors from Google Update to the About box.

chrome/browser/ui/views/about_chrome_view.cc

Index: chrome/browser/ui/views/about_chrome_view.cc
===================================================================
--- chrome/browser/ui/views/about_chrome_view.cc	(revision 107092)
+++ chrome/browser/ui/views/about_chrome_view.cc	(working copy)
@@ -50,6 +50,10 @@
 #include "chrome/installer/util/install_util.h"
 #endif  // defined(OS_WIN)
 
+// The amount of vertical space separating the error label at the bottom from
+// the rest of the text.
+static const int kErrorLabelVerticalSpacing = 15;  // Pixels.
+
 namespace {
 // These are used as placeholder text around the links in the text in the about
 // dialog.
@@ -165,7 +169,12 @@
   // This is a text field so people can copy the version number from the dialog.
   version_label_ = new views::Textfield();
   chrome::VersionInfo version_info;
-  version_label_->SetText(UTF8ToUTF16(version_info.CreateVersionString()));
+  {
+    // TODO(finnur): Need to evaluate whether we should be doing IO here.
+    //               See issue: http://crbug.com/101699.
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
+    version_label_->SetText(UTF8ToUTF16(version_info.CreateVersionString()));
+  }
   version_label_->SetReadOnly(true);
   version_label_->RemoveBorder();
   version_label_->SetTextColor(SK_ColorBLACK);
@@ -189,13 +198,13 @@
       text.find(kBeginLinkChr) < text.find(kBeginLinkOss);
 
   size_t link1 = text.find(kBeginLink);
-  DCHECK(link1 != std::wstring::npos);
+  DCHECK(link1 != string16::npos);
   size_t link1_end = text.find(kEndLink, link1);
-  DCHECK(link1_end != std::wstring::npos);
+  DCHECK(link1_end != string16::npos);
   size_t link2 = text.find(kBeginLink, link1_end);
-  DCHECK(link2 != std::wstring::npos);
+  DCHECK(link2 != string16::npos);
   size_t link2_end = text.find(kEndLink, link2);
-  DCHECK(link1_end != std::wstring::npos);
+  DCHECK(link1_end != string16::npos);
 
   main_label_chunk1_ = text.substr(0, link1);
   main_label_chunk2_ = StringSubRange(text, link1_end + kEndLinkOss.size(),
@@ -267,6 +276,11 @@
   AddChildView(terms_of_service_url_);
   terms_of_service_url_->set_listener(this);
 
+  error_label_ = new views::Label();
+  error_label_->SetHorizontalAlignment(views::Label::ALIGN_LEFT);
+  error_label_->SetMultiLine(true);
+  AddChildView(error_label_);
+
   // Add the Terms of Service line and some whitespace.
   height += font.GetHeight() + views::kRelatedControlVerticalSpacing;
 #endif
@@ -327,6 +341,16 @@
                               sz.width(),
                               main_text_label_height_);
 
+  // And the error label at the bottom of the main content. This does not fit on
+  // screen until EnlargeWindowSizeIfNeeded has been called (which happens when
+  // an error is returned from Google Update).
+  sz.set_height(error_label_->GetHeightForWidth(sz.width()));
+  error_label_->SetBounds(main_text_label_->bounds().x(),
+                          main_text_label_->bounds().y() +
+                              main_text_label_->height() +
+                              kErrorLabelVerticalSpacing,
+                          sz.width(), sz.height());
+
   // Get the y-coordinate of our parent so we can position the text left of the
   // buttons at the bottom.
   gfx::Rect parent_bounds = parent()->GetContentsBounds();
@@ -484,7 +508,7 @@
       if (!(base::win::GetVersion() == base::win::VERSION_VISTA &&
             (base::win::OSInfo::GetInstance()->service_pack().major == 0) &&
             !base::win::UserAccountControlIsEnabled())) {
-        UpdateStatus(UPGRADE_CHECK_STARTED, GOOGLE_UPDATE_NO_ERROR);
+        UpdateStatus(UPGRADE_CHECK_STARTED, GOOGLE_UPDATE_NO_ERROR, string16());
         // CheckForUpdate(false, ...) means don't upgrade yet.
         google_updater_->CheckForUpdate(false, GetWidget());
       }
@@ -593,6 +617,7 @@
 
 void AboutChromeView::OnReportResults(GoogleUpdateUpgradeResult result,
                                       GoogleUpdateErrorCode error_code,
+                                      const string16& error_message,
                                       const string16& version) {
   // Drop the last reference to the object so that it gets cleaned up here.
   google_updater_ = NULL;
@@ -600,13 +625,14 @@
   // Make a note of which version Google Update is reporting is the latest
   // version.
   new_version_available_ = version;
-  UpdateStatus(result, error_code);
+  UpdateStatus(result, error_code, error_message);
 }
 ////////////////////////////////////////////////////////////////////////////////
 // AboutChromeView, private:
 
 void AboutChromeView::UpdateStatus(GoogleUpdateUpgradeResult result,
-                                   GoogleUpdateErrorCode error_code) {
+                                   GoogleUpdateErrorCode error_code,
+                                   const string16& error_message) {
 #if !defined(GOOGLE_CHROME_BUILD)
   // For Chromium builds it would show an error message.
   // But it looks weird because in fact there is no error,
@@ -638,7 +664,7 @@
       DCHECK(!google_updater_);  // Should have been nulled out already.
       google_updater_ = new GoogleUpdate();
       google_updater_->set_status_listener(this);
-      UpdateStatus(UPGRADE_STARTED, GOOGLE_UPDATE_NO_ERROR);
+      UpdateStatus(UPGRADE_STARTED, GOOGLE_UPDATE_NO_ERROR, string16());
       // CheckForUpdate(true,...) means perform upgrade if new version found.
       google_updater_->CheckForUpdate(true, GetWidget());
       // TODO(seanparent): Need to see if this code needs to change to
@@ -668,7 +694,7 @@
           (installed_version->CompareTo(*running_version) <= 0)) {
         UserMetrics::RecordAction(
             UserMetricsAction("UpgradeCheck_AlreadyUpToDate"));
-        std::wstring update_label_text = l10n_util::GetStringFUTF16(
+        string16 update_label_text = l10n_util::GetStringFUTF16(
             IDS_UPGRADE_ALREADY_UP_TO_DATE,
             l10n_util::GetStringUTF16(IDS_PRODUCT_NAME),
             ASCIIToUTF16(version_info.Version()));
@@ -689,7 +715,7 @@
       else
         UserMetrics::RecordAction(UserMetricsAction("UpgradeCheck_Upgraded"));
       restart_button_visible_ = true;
-      const std::wstring& update_string =
+      const string16& update_string =
           UTF16ToWide(l10n_util::GetStringFUTF16(
               IDS_UPGRADE_SUCCESSFUL_RELAUNCH,
               l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
@@ -697,8 +723,16 @@
       show_success_indicator = true;
       break;
     }
-    case UPGRADE_ERROR:
+    case UPGRADE_ERROR: {
       UserMetrics::RecordAction(UserMetricsAction("UpgradeCheck_Error"));
+      if (!error_message.empty()) {
+        error_label_->SetText(
+            l10n_util::GetStringFUTF16(IDS_ABOUT_BOX_ERROR_DURING_UPDATE_CHECK,
+                error_message));
+        int added_height = EnlargeWindowSizeIfNeeded();
+        dialog_dimensions_.set_height(dialog_dimensions_.height() +
+                                      added_height);
+      }
       restart_button_visible_ = false;
       if (error_code != GOOGLE_UPDATE_DISABLED_BY_POLICY) {
         update_label_.SetText(
@@ -709,6 +743,7 @@
       }
       show_timeout_indicator = true;
       break;
+    }
     default:
       NOTREACHED();
   }
@@ -732,4 +767,20 @@
     GetDialogClientView()->UpdateDialogButtons();
 }
 
+int AboutChromeView::EnlargeWindowSizeIfNeeded() {
+  if (error_label_->GetText().empty())
+    return 0;
+
+  // This will enlarge the window each time the function is called, which is
+  // fine since we only receive status once from Google Update.
+  gfx::Rect window_rect = GetWidget()->GetWindowScreenBounds();
+  int height = error_label_->GetHeightForWidth(
+      dialog_dimensions_.width() - (2 * views::kPanelHorizMargin)) +
+          views::kRelatedControlVerticalSpacing;
+  window_rect.set_height(window_rect.height() + height);
+  GetWidget()->SetBounds(window_rect);
+
+  return height;
+}
+
 #endif