Revert of Moves the notification icon out of the status area overflow.

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

-// Copyright 2014 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_state_changer_win.h"
-
-namespace {
-
-////////////////////////////////////////////////////////////////////////////////
-// Status Tray API
-
-// The folowing describes the interface to the undocumented Windows Exporer APIs
-// for manipulating with the status tray area.  This code should be used with
-// care as it can change with versions (even minor versions) of Windows.
-
-// ITrayNotify is an interface describing the API for manipulating the state of
-// the Windows notification area, as well as for registering for change
-// notifications.
-class __declspec(uuid("FB852B2C-6BAD-4605-9551-F15F87830935")) ITrayNotify
-    : public IUnknown {
- public:
-  virtual HRESULT STDMETHODCALLTYPE
-      RegisterCallback(INotificationCB* callback) = 0;
-  virtual HRESULT STDMETHODCALLTYPE
-      SetPreference(const NOTIFYITEM* notify_item) = 0;
-  virtual HRESULT STDMETHODCALLTYPE EnableAutoTray(BOOL enabled) = 0;
-};
-
-// ITrayNotifyWin8 is the interface that replaces ITrayNotify for newer versions
-// of Windows.
-class __declspec(uuid("D133CE13-3537-48BA-93A7-AFCD5D2053B4")) ITrayNotifyWin8
-    : public IUnknown {
- public:
-  virtual HRESULT STDMETHODCALLTYPE
-      RegisterCallback(INotificationCB* callback, unsigned long*) = 0;
-  virtual HRESULT STDMETHODCALLTYPE UnregisterCallback(unsigned long*) = 0;
-  virtual HRESULT STDMETHODCALLTYPE SetPreference(NOTIFYITEM const*) = 0;
-  virtual HRESULT STDMETHODCALLTYPE EnableAutoTray(BOOL) = 0;
-  virtual HRESULT STDMETHODCALLTYPE DoAction(BOOL) = 0;
-};
-
-const CLSID CLSID_TrayNotify = {
-    0x25DEAD04,
-    0x1EAC,
-    0x4911,
-    {0x9E, 0x3A, 0xAD, 0x0A, 0x4A, 0xB5, 0x60, 0xFD}};
-
-}  // namespace
-
-StatusTrayStateChangerWin::StatusTrayStateChangerWin(UINT icon_id, HWND window)
-    : interface_version_(INTERFACE_VERSION_UNKNOWN),
-      icon_id_(icon_id),
-      window_(window) {
-  wchar_t module_name[MAX_PATH];
-  ::GetModuleFileName(NULL, module_name, MAX_PATH);
-
-  file_name_ = module_name;
-}
-
-void StatusTrayStateChangerWin::EnsureTrayIconVisible() {
-  DCHECK(CalledOnValidThread());
-
-  if (!CreateTrayNotify()) {
-    VLOG(1) << "Unable to create COM object for ITrayNotify.";
-    return;
-  }
-
-  scoped_ptr<NOTIFYITEM> notify_item = RegisterCallback();
-
-  // If the user has already hidden us explicitly, try to honor their choice by
-  // not changing anything.
-  if (notify_item->preference == PREFERENCE_SHOW_NEVER)
-    return;
-
-  // If we are already on the taskbar, return since nothing needs to be done.
-  if (notify_item->preference == PREFERENCE_SHOW_ALWAYS)
-    return;
-
-  notify_item->preference = PREFERENCE_SHOW_ALWAYS;
-
-  SendNotifyItemUpdate(notify_item.Pass());
-}
-
-STDMETHODIMP_(ULONG) StatusTrayStateChangerWin::AddRef() {
-  DCHECK(CalledOnValidThread());
-  return base::win::IUnknownImpl::AddRef();
-}
-
-STDMETHODIMP_(ULONG) StatusTrayStateChangerWin::Release() {
-  DCHECK(CalledOnValidThread());
-  return base::win::IUnknownImpl::Release();
-}
-
-STDMETHODIMP StatusTrayStateChangerWin::QueryInterface(REFIID riid,
-                                                       PVOID* ptr_void) {
-  DCHECK(CalledOnValidThread());
-  if (riid == __uuidof(INotificationCB)) {
-    *ptr_void = static_cast<INotificationCB*>(this);
-    AddRef();
-    return S_OK;
-  }
-
-  return base::win::IUnknownImpl::QueryInterface(riid, ptr_void);
-}
-
-STDMETHODIMP StatusTrayStateChangerWin::Notify(ULONG event,
-                                               NOTIFYITEM* notify_item) {
-  DCHECK(CalledOnValidThread());
-  DCHECK(notify_item);
-  if (notify_item->hwnd != window_ || notify_item->id != icon_id_ ||
-      base::string16(notify_item->exe_name) != file_name_) {
-    return S_OK;
-  }
-
-  notify_item_.reset(new NOTIFYITEM(*notify_item));
-  return S_OK;
-}
-
-StatusTrayStateChangerWin::~StatusTrayStateChangerWin() {
-  DCHECK(CalledOnValidThread());
-}
-
-bool StatusTrayStateChangerWin::CreateTrayNotify() {
-  DCHECK(CalledOnValidThread());
-
-  tray_notify_.Release();  // Release so this method can be called more than
-                           // once.
-
-  HRESULT hr = tray_notify_.CreateInstance(CLSID_TrayNotify);
-  if (FAILED(hr))
-    return false;
-
-  base::win::ScopedComPtr<ITrayNotifyWin8> tray_notify_win8;
-  hr = tray_notify_win8.QueryFrom(tray_notify_);
-  if (SUCCEEDED(hr)) {
-    interface_version_ = INTERFACE_VERSION_WIN8;
-    return true;
-  }
-
-  base::win::ScopedComPtr<ITrayNotify> tray_notify_legacy;
-  hr = tray_notify_legacy.QueryFrom(tray_notify_);
-  if (SUCCEEDED(hr)) {
-    interface_version_ = INTERFACE_VERSION_LEGACY;
-    return true;
-  }
-
-  return false;
-}
-
-scoped_ptr<NOTIFYITEM> StatusTrayStateChangerWin::RegisterCallback() {
-  // |notify_item_| is used to store the result of the callback from
-  // Explorer.exe, which happens synchronously during
-  // RegisterCallbackWin8 or RegisterCallbackLegacy.
-  DCHECK(notify_item_.get() == NULL);
-
-  // TODO(dewittj): Add UMA logging here to report if either of our strategies
-  // has a tendency to fail on particular versions of Windows.
-  switch (interface_version_) {
-    case INTERFACE_VERSION_WIN8:
-      if (!RegisterCallbackWin8())
-        VLOG(1) << "Unable to successfully run RegisterCallbackWin8.";
-      break;
-    case INTERFACE_VERSION_LEGACY:
-      if (!RegisterCallbackLegacy())
-        VLOG(1) << "Unable to successfully run RegisterCallbackLegacy.";
-      break;
-    default:
-      NOTREACHED();
-  }
-
-  // Adding an intermediate scoped pointer here so that |notify_item_| is reset
-  // to NULL.
-  scoped_ptr<NOTIFYITEM> rv(notify_item_.release());
-  return rv.Pass();
-}
-
-bool StatusTrayStateChangerWin::RegisterCallbackWin8() {
-  base::win::ScopedComPtr<ITrayNotifyWin8> tray_notify_win8;
-  HRESULT hr = tray_notify_win8.QueryFrom(tray_notify_);
-  if (FAILED(hr))
-    return false;
-
-  // The following two lines cause Windows Explorer to call us back with all the
-  // existing tray icons and their preference.  It would also presumably notify
-  // us if changes were made in realtime while we registered as a callback, but
-  // we just want to modify our own entry so we immediately unregister.
-  unsigned long callback_id = 0;
-  hr = tray_notify_win8->RegisterCallback(this, &callback_id);
-  tray_notify_win8->UnregisterCallback(&callback_id);
-  if (FAILED(hr)) {
-    return false;
-  }
-
-  return true;
-}
-
-bool StatusTrayStateChangerWin::RegisterCallbackLegacy() {
-  base::win::ScopedComPtr<ITrayNotify> tray_notify;
-  HRESULT hr = tray_notify.QueryFrom(tray_notify_);
-  if (FAILED(hr)) {
-    return false;
-  }
-
-  // The following two lines cause Windows Explorer to call us back with all the
-  // existing tray icons and their preference.  It would also presumably notify
-  // us if changes were made in realtime while we registered as a callback.  In
-  // this version of the API, there can be only one registered callback so it is
-  // better to unregister as soon as possible.
-  // TODO(dewittj): Try to notice if the notification area icon customization
-  // window is open and postpone this call until the user closes it;
-  // registering the callback while the window is open can cause stale data to
-  // be displayed to the user.
-  hr = tray_notify->RegisterCallback(this);
-  tray_notify->RegisterCallback(NULL);
-  if (FAILED(hr)) {
-    return false;
-  }
-
-  return true;
-}
-
-void StatusTrayStateChangerWin::SendNotifyItemUpdate(
-    scoped_ptr<NOTIFYITEM> notify_item) {
-  if (interface_version_ == INTERFACE_VERSION_LEGACY) {
-    base::win::ScopedComPtr<ITrayNotify> tray_notify;
-    HRESULT hr = tray_notify.QueryFrom(tray_notify_);
-    if (SUCCEEDED(hr))
-      tray_notify->SetPreference(notify_item.get());
-  } else if (interface_version_ == INTERFACE_VERSION_WIN8) {
-    base::win::ScopedComPtr<ITrayNotifyWin8> tray_notify;
-    HRESULT hr = tray_notify.QueryFrom(tray_notify_);
-    if (SUCCEEDED(hr))
-      tray_notify->SetPreference(notify_item.get());
-  }
-}