1 // Copyright 2022 The Chromium Authors
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 "base/win/default_apps_util.h"
6
7 #include <shobjidl.h>
8 #include <wrl/client.h>
9
10 #include "base/logging.h"
11 #include "base/strings/strcat.h"
12 #include "base/strings/string_util.h"
13 #include "base/win/windows_version.h"
14
15 namespace {
16
17 // Returns the target used as a activate parameter when opening the settings
18 // pointing to the page that is the most relevant to a user trying to change the
19 // default handler for `protocol`.
GetTargetForDefaultAppsSettings(base::WStringPiece protocol)20 std::wstring GetTargetForDefaultAppsSettings(base::WStringPiece protocol) {
21 static constexpr base::WStringPiece kSystemSettingsDefaultAppsPrefix(
22 L"SystemSettings_DefaultApps_");
23 if (base::EqualsCaseInsensitiveASCII(protocol, L"http"))
24 return base::StrCat({kSystemSettingsDefaultAppsPrefix, L"Browser"});
25 if (base::EqualsCaseInsensitiveASCII(protocol, L"mailto"))
26 return base::StrCat({kSystemSettingsDefaultAppsPrefix, L"Email"});
27 return L"SettingsPageAppsDefaultsProtocolView";
28 }
29
30 } // namespace
31
32 namespace base::win {
33
LaunchDefaultAppsSettingsModernDialog(base::WStringPiece protocol)34 bool LaunchDefaultAppsSettingsModernDialog(base::WStringPiece protocol) {
35 // The appModelId looks arbitrary but it is the same in Win8 and Win10. There
36 // is no easy way to retrieve the appModelId from the registry.
37 static constexpr wchar_t kControlPanelAppModelId[] =
38 L"windows.immersivecontrolpanel_cw5n1h2txyewy"
39 L"!microsoft.windows.immersivecontrolpanel";
40
41 Microsoft::WRL::ComPtr<IApplicationActivationManager> activator;
42 HRESULT hr = ::CoCreateInstance(CLSID_ApplicationActivationManager, nullptr,
43 CLSCTX_ALL, IID_PPV_ARGS(&activator));
44 if (FAILED(hr))
45 return false;
46
47 DWORD pid = 0;
48 CoAllowSetForegroundWindow(activator.Get(), nullptr);
49 hr = activator->ActivateApplication(
50 kControlPanelAppModelId, L"page=SettingsPageAppsDefaults", AO_NONE, &pid);
51 if (FAILED(hr))
52 return false;
53 if (protocol.empty())
54 return true;
55
56 hr = activator->ActivateApplication(
57 kControlPanelAppModelId,
58 base::StrCat({L"page=SettingsPageAppsDefaults&target=",
59 GetTargetForDefaultAppsSettings(protocol)})
60 .c_str(),
61 AO_NONE, &pid);
62 return SUCCEEDED(hr);
63 }
64
65 } // namespace base::win
66