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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/base/win/shell.h"
      6 
      7 #include <dwmapi.h>
      8 #include <shlobj.h>  // Must be before propkey.
      9 #include <propkey.h>
     10 #include <shellapi.h>
     11 
     12 #include "base/command_line.h"
     13 #include "base/files/file_path.h"
     14 #include "base/native_library.h"
     15 #include "base/strings/string_util.h"
     16 #include "base/win/metro.h"
     17 #include "base/win/scoped_comptr.h"
     18 #include "base/win/win_util.h"
     19 #include "base/win/windows_version.h"
     20 #include "ui/base/ui_base_switches.h"
     21 
     22 namespace ui {
     23 namespace win {
     24 
     25 // Show the Windows "Open With" dialog box to ask the user to pick an app to
     26 // open the file with.
     27 bool OpenItemWithExternalApp(const string16& full_path) {
     28   SHELLEXECUTEINFO sei = { sizeof(sei) };
     29   sei.fMask = SEE_MASK_FLAG_DDEWAIT;
     30   sei.nShow = SW_SHOWNORMAL;
     31   sei.lpVerb = L"openas";
     32   sei.lpFile = full_path.c_str();
     33   return (TRUE == ::ShellExecuteExW(&sei));
     34 }
     35 
     36 bool OpenAnyViaShell(const string16& full_path,
     37                      const string16& directory,
     38                      const string16& args,
     39                      DWORD mask) {
     40   SHELLEXECUTEINFO sei = { sizeof(sei) };
     41   sei.fMask = mask;
     42   sei.nShow = SW_SHOWNORMAL;
     43   sei.lpFile = full_path.c_str();
     44   sei.lpDirectory = directory.c_str();
     45   if (!args.empty())
     46     sei.lpParameters = args.c_str();
     47 
     48   if (::ShellExecuteExW(&sei))
     49     return true;
     50   if (::GetLastError() == ERROR_NO_ASSOCIATION)
     51     return OpenItemWithExternalApp(full_path);
     52   return false;
     53 }
     54 
     55 bool OpenItemViaShell(const base::FilePath& full_path) {
     56   return OpenAnyViaShell(full_path.value(), full_path.DirName().value(),
     57                          string16(), 0);
     58 }
     59 
     60 bool OpenItemViaShellNoZoneCheck(const base::FilePath& full_path) {
     61   return OpenAnyViaShell(full_path.value(), string16(), string16(),
     62                          SEE_MASK_NOZONECHECKS | SEE_MASK_FLAG_DDEWAIT);
     63 }
     64 
     65 bool PreventWindowFromPinning(HWND hwnd) {
     66   // This functionality is only available on Win7+. It also doesn't make sense
     67   // to do this for Chrome Metro.
     68   if (base::win::GetVersion() < base::win::VERSION_WIN7 ||
     69       base::win::IsMetroProcess())
     70     return false;
     71   base::win::ScopedComPtr<IPropertyStore> pps;
     72   HRESULT result = SHGetPropertyStoreForWindow(
     73       hwnd, __uuidof(*pps), reinterpret_cast<void**>(pps.Receive()));
     74   if (FAILED(result))
     75     return false;
     76 
     77   return base::win::SetBooleanValueForPropertyStore(
     78              pps, PKEY_AppUserModel_PreventPinning, true);
     79 }
     80 
     81 // TODO(calamity): investigate moving this out of the UI thread as COM
     82 // operations may spawn nested message loops which can cause issues.
     83 void SetAppDetailsForWindow(const string16& app_id,
     84                             const string16& app_icon,
     85                             const string16& relaunch_command,
     86                             const string16& relaunch_display_name,
     87                             HWND hwnd) {
     88   // This functionality is only available on Win7+. It also doesn't make sense
     89   // to do this for Chrome Metro.
     90   if (base::win::GetVersion() < base::win::VERSION_WIN7 ||
     91       base::win::IsMetroProcess())
     92     return;
     93   base::win::ScopedComPtr<IPropertyStore> pps;
     94   HRESULT result = SHGetPropertyStoreForWindow(
     95       hwnd, __uuidof(*pps), reinterpret_cast<void**>(pps.Receive()));
     96   if (S_OK == result) {
     97     if (!app_id.empty())
     98       base::win::SetAppIdForPropertyStore(pps, app_id.c_str());
     99     if (!app_icon.empty()) {
    100       base::win::SetStringValueForPropertyStore(
    101           pps, PKEY_AppUserModel_RelaunchIconResource, app_icon.c_str());
    102     }
    103     if (!relaunch_command.empty()) {
    104       base::win::SetStringValueForPropertyStore(
    105           pps, PKEY_AppUserModel_RelaunchCommand, relaunch_command.c_str());
    106     }
    107     if (!relaunch_display_name.empty()) {
    108       base::win::SetStringValueForPropertyStore(
    109           pps, PKEY_AppUserModel_RelaunchDisplayNameResource,
    110           relaunch_display_name.c_str());
    111     }
    112   }
    113 }
    114 
    115 void SetAppIdForWindow(const string16& app_id, HWND hwnd) {
    116   SetAppDetailsForWindow(app_id, string16(), string16(), string16(), hwnd);
    117 }
    118 
    119 void SetAppIconForWindow(const string16& app_icon, HWND hwnd) {
    120   SetAppDetailsForWindow(string16(), app_icon, string16(), string16(), hwnd);
    121 }
    122 
    123 void SetRelaunchDetailsForWindow(const string16& relaunch_command,
    124                                  const string16& display_name,
    125                                  HWND hwnd) {
    126   SetAppDetailsForWindow(string16(),
    127                          string16(),
    128                          relaunch_command,
    129                          display_name,
    130                          hwnd);
    131 }
    132 
    133 bool IsAeroGlassEnabled() {
    134   // For testing in Win8 (where it is not possible to disable composition) the
    135   // user can specify this command line switch to mimic the behavior.  In this
    136   // mode, cross-HWND transparency is not supported and various types of
    137   // widgets fallback to more simplified rendering behavior.
    138   if (CommandLine::ForCurrentProcess()->HasSwitch(
    139       switches::kDisableDwmComposition))
    140     return false;
    141 
    142   if (base::win::GetVersion() < base::win::VERSION_VISTA)
    143     return false;
    144   // If composition is not enabled, we behave like on XP.
    145   BOOL enabled = FALSE;
    146   return SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled;
    147 }
    148 
    149 }  // namespace win
    150 }  // namespace ui
    151