Adds a first-run balloon to the Windows notification center.

chrome/browser/ui/views/status_icons/status_tray_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/status_icons/status_tray_win.h"
 
 #include "base/win/wrapped_window_proc.h"
 #include "chrome/browser/ui/views/status_icons/status_icon_win.h"
 #include "chrome/common/chrome_constants.h"
 #include "ui/base/win/hwnd_util.h"
 #include "ui/gfx/screen.h"
 #include "win8/util/win8_util.h"
 
 static const UINT kStatusIconMessage = WM_APP + 1;
+// This message is TB_INDETERMINATE, fired when the balloon is clicked.
+static const UINT kBalloonClickedMessage = WM_USER + 5;
 
 StatusTrayWin::StatusTrayWin()
     : next_icon_id_(1),
       atom_(0),
       instance_(NULL),
       window_(NULL) {
   // Register our window class
   WNDCLASSEX window_class;
   base::win::InitializeWindowClass(
       chrome::kStatusTrayWindowClass,
@@ skipping 36 matching lines @@
                                         LPARAM lparam) {
   if (message == taskbar_created_message_) {
     // We need to reset all of our icons because the taskbar went away.
     for (StatusIcons::const_iterator i(status_icons().begin());
          i != status_icons().end(); ++i) {
       StatusIconWin* win_icon = static_cast<StatusIconWin*>(*i);
       win_icon->ResetIcon();
     }
     return TRUE;
   } else if (message == kStatusIconMessage) {
+    StatusIconWin* win_icon = NULL;
+    gfx::Point cursor_pos(
+        gfx::Screen::GetNativeScreen()->GetCursorScreenPoint());

[Andrew T Wilson (Slow), 2013/06/20 21:08:59]

Do we really need to move the cursor_pos stuff up here, since it's not used for
HandleBalloonClickEvent?

[dewittj, 2013/06/21 20:35:15]

Done.

+
+    // Find the selected status icon.
+    for (StatusIcons::const_iterator i(status_icons().begin());
+         i != status_icons().end();
+         ++i) {
+      StatusIconWin* current_win_icon = static_cast<StatusIconWin*>(*i);
+      if (current_win_icon->icon_id() == wparam) {
+        win_icon = current_win_icon;
+        break;
+      }
+    }
+
     switch (lparam) {
+      case kBalloonClickedMessage:
+        win_icon->HandleBalloonClickEvent();
+        return TRUE;
+
       case WM_LBUTTONDOWN:
       case WM_RBUTTONDOWN:
       case WM_CONTEXTMENU:
         // Walk our icons, find which one was clicked on, and invoke its
         // HandleClickEvent() method.
-        for (StatusIcons::const_iterator i(status_icons().begin());
-             i != status_icons().end(); ++i) {
-          StatusIconWin* win_icon = static_cast<StatusIconWin*>(*i);
-          if (win_icon->icon_id() == wparam) {
-            gfx::Point cursor_pos(
-                gfx::Screen::GetNativeScreen()->GetCursorScreenPoint());
-            win_icon->HandleClickEvent(cursor_pos, lparam == WM_LBUTTONDOWN);
-            break;
-          }
-        }
+        win_icon->HandleClickEvent(cursor_pos, lparam == WM_LBUTTONDOWN);
         return TRUE;
     }
   }
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }
 
 StatusTrayWin::~StatusTrayWin() {
   if (window_)
     DestroyWindow(window_);
 
   if (atom_)
     UnregisterClass(MAKEINTATOM(atom_), instance_);
 }
 
 StatusIcon* StatusTrayWin::CreatePlatformStatusIcon() {
   if (win8::IsSingleWindowMetroMode()) {
     return new StatusIconMetro(next_icon_id_++);
   } else {
     return new StatusIconWin(next_icon_id_++, window_, kStatusIconMessage);
   }
 }
 
 StatusTray* StatusTray::Create() {
   return new StatusTrayWin();
 }