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-rw-r--r--widget/windows/WindowsUIUtils.cpp809
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diff --git a/widget/windows/WindowsUIUtils.cpp b/widget/windows/WindowsUIUtils.cpp
new file mode 100644
index 0000000000..3d5cff7e23
--- /dev/null
+++ b/widget/windows/WindowsUIUtils.cpp
@@ -0,0 +1,809 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <windows.h>
+#include <wrl.h>
+
+#include "nsServiceManagerUtils.h"
+
+#include "WindowsUIUtils.h"
+
+#include "nsIObserverService.h"
+#include "nsIAppShellService.h"
+#include "nsAppShellCID.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/ResultVariant.h"
+#include "mozilla/Services.h"
+#include "mozilla/StaticPrefs_widget.h"
+#include "mozilla/WidgetUtils.h"
+#include "mozilla/WindowsVersion.h"
+#include "mozilla/LookAndFeel.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/media/MediaUtils.h"
+#include "nsString.h"
+#include "nsGlobalWindowOuter.h"
+#include "nsIWidget.h"
+#include "nsIWindowMediator.h"
+#include "nsPIDOMWindow.h"
+#include "nsWindowGfx.h"
+#include "Units.h"
+
+/* mingw currently doesn't support windows.ui.viewmanagement.h, so we disable it
+ * until it's fixed. */
+
+// See
+// https://github.com/tpn/winsdk-10/blob/master/Include/10.0.14393.0/winrt/windows.ui.viewmanagement.h
+// for the source of some of these definitions for older SDKs.
+#ifndef __MINGW32__
+
+# include <inspectable.h>
+# include <roapi.h>
+# include <windows.ui.viewmanagement.h>
+
+# pragma comment(lib, "runtimeobject.lib")
+
+using namespace ABI::Windows::UI;
+using namespace ABI::Windows::UI::ViewManagement;
+using namespace Microsoft::WRL;
+using namespace Microsoft::WRL::Wrappers;
+using namespace ABI::Windows::Foundation;
+using namespace ABI::Windows::ApplicationModel::DataTransfer;
+
+# ifndef RuntimeClass_Windows_UI_ViewManagement_UIViewSettings
+# define RuntimeClass_Windows_UI_ViewManagement_UIViewSettings \
+ L"Windows.UI.ViewManagement.UIViewSettings"
+# endif
+
+# ifndef IUIViewSettingsInterop
+
+using IUIViewSettingsInterop = interface IUIViewSettingsInterop;
+
+MIDL_INTERFACE("3694dbf9-8f68-44be-8ff5-195c98ede8a6")
+IUIViewSettingsInterop : public IInspectable {
+ public:
+ virtual HRESULT STDMETHODCALLTYPE GetForWindow(HWND hwnd, REFIID riid,
+ void** ppv) = 0;
+};
+# endif
+
+# ifndef __IDataTransferManagerInterop_INTERFACE_DEFINED__
+# define __IDataTransferManagerInterop_INTERFACE_DEFINED__
+
+using IDataTransferManagerInterop = interface IDataTransferManagerInterop;
+
+MIDL_INTERFACE("3A3DCD6C-3EAB-43DC-BCDE-45671CE800C8")
+IDataTransferManagerInterop : public IUnknown {
+ public:
+ virtual HRESULT STDMETHODCALLTYPE GetForWindow(
+ HWND appWindow, REFIID riid, void** dataTransferManager) = 0;
+ virtual HRESULT STDMETHODCALLTYPE ShowShareUIForWindow(HWND appWindow) = 0;
+};
+
+# endif
+
+# if !defined( \
+ ____x_ABI_CWindows_CApplicationModel_CDataTransfer_CIDataPackage4_INTERFACE_DEFINED__)
+# define ____x_ABI_CWindows_CApplicationModel_CDataTransfer_CIDataPackage4_INTERFACE_DEFINED__
+
+MIDL_INTERFACE("13a24ec8-9382-536f-852a-3045e1b29a3b")
+IDataPackage4 : public IInspectable {
+ public:
+ virtual HRESULT STDMETHODCALLTYPE add_ShareCanceled(
+ __FITypedEventHandler_2_Windows__CApplicationModel__CDataTransfer__CDataPackage_IInspectable *
+ handler,
+ EventRegistrationToken * token) = 0;
+ virtual HRESULT STDMETHODCALLTYPE remove_ShareCanceled(
+ EventRegistrationToken token) = 0;
+};
+
+# endif
+
+# ifndef RuntimeClass_Windows_UI_ViewManagement_UISettings
+# define RuntimeClass_Windows_UI_ViewManagement_UISettings \
+ L"Windows.UI.ViewManagement.UISettings"
+# endif
+# if WINDOWS_FOUNDATION_UNIVERSALAPICONTRACT_VERSION < 0x80000
+namespace ABI {
+namespace Windows {
+namespace UI {
+namespace ViewManagement {
+
+class UISettings;
+class UISettingsAutoHideScrollBarsChangedEventArgs;
+interface IUISettingsAutoHideScrollBarsChangedEventArgs;
+MIDL_INTERFACE("87afd4b2-9146-5f02-8f6b-06d454174c0f")
+IUISettingsAutoHideScrollBarsChangedEventArgs : public IInspectable{};
+
+} // namespace ViewManagement
+} // namespace UI
+} // namespace Windows
+} // namespace ABI
+
+namespace ABI {
+namespace Windows {
+namespace Foundation {
+
+template <>
+struct __declspec(uuid("808aef30-2660-51b0-9c11-f75dd42006b4"))
+ ITypedEventHandler<ABI::Windows::UI::ViewManagement::UISettings*,
+ ABI::Windows::UI::ViewManagement::
+ UISettingsAutoHideScrollBarsChangedEventArgs*>
+ : ITypedEventHandler_impl<
+ ABI::Windows::Foundation::Internal::AggregateType<
+ ABI::Windows::UI::ViewManagement::UISettings*,
+ ABI::Windows::UI::ViewManagement::IUISettings*>,
+ ABI::Windows::Foundation::Internal::AggregateType<
+ ABI::Windows::UI::ViewManagement::
+ UISettingsAutoHideScrollBarsChangedEventArgs*,
+ ABI::Windows::UI::ViewManagement::
+ IUISettingsAutoHideScrollBarsChangedEventArgs*>> {
+ static const wchar_t* z_get_rc_name_impl() {
+ return L"Windows.Foundation.TypedEventHandler`2<Windows.UI.ViewManagement."
+ L"UISettings, "
+ L"Windows.UI.ViewManagement."
+ L"UISettingsAutoHideScrollBarsChangedEventArgs>";
+ }
+};
+// Define a typedef for the parameterized interface specialization's mangled
+// name. This allows code which uses the mangled name for the parameterized
+// interface to access the correct parameterized interface specialization.
+typedef ITypedEventHandler<ABI::Windows::UI::ViewManagement::UISettings*,
+ ABI::Windows::UI::ViewManagement::
+ UISettingsAutoHideScrollBarsChangedEventArgs*>
+ __FITypedEventHandler_2_Windows__CUI__CViewManagement__CUISettings_Windows__CUI__CViewManagement__CUISettingsAutoHideScrollBarsChangedEventArgs_t;
+# define __FITypedEventHandler_2_Windows__CUI__CViewManagement__CUISettings_Windows__CUI__CViewManagement__CUISettingsAutoHideScrollBarsChangedEventArgs \
+ ABI::Windows::Foundation:: \
+ __FITypedEventHandler_2_Windows__CUI__CViewManagement__CUISettings_Windows__CUI__CViewManagement__CUISettingsAutoHideScrollBarsChangedEventArgs_t
+
+} // namespace Foundation
+} // namespace Windows
+} // namespace ABI
+
+namespace ABI {
+namespace Windows {
+namespace UI {
+namespace ViewManagement {
+class UISettings;
+class UISettingsAutoHideScrollBarsChangedEventArgs;
+interface IUISettings5;
+MIDL_INTERFACE("5349d588-0cb5-5f05-bd34-706b3231f0bd")
+IUISettings5 : public IInspectable {
+ public:
+ virtual HRESULT STDMETHODCALLTYPE get_AutoHideScrollBars(boolean * value) = 0;
+ virtual HRESULT STDMETHODCALLTYPE add_AutoHideScrollBarsChanged(
+ __FITypedEventHandler_2_Windows__CUI__CViewManagement__CUISettings_Windows__CUI__CViewManagement__CUISettingsAutoHideScrollBarsChangedEventArgs *
+ handler,
+ EventRegistrationToken * token) = 0;
+ virtual HRESULT STDMETHODCALLTYPE remove_AutoHideScrollBarsChanged(
+ EventRegistrationToken token) = 0;
+};
+} // namespace ViewManagement
+} // namespace UI
+} // namespace Windows
+} // namespace ABI
+# endif
+#endif
+
+using namespace mozilla;
+
+enum class TabletModeState : uint8_t { Unknown, Off, On };
+static TabletModeState sInTabletModeState;
+
+WindowsUIUtils::WindowsUIUtils() = default;
+WindowsUIUtils::~WindowsUIUtils() = default;
+
+NS_IMPL_ISUPPORTS(WindowsUIUtils, nsIWindowsUIUtils)
+
+NS_IMETHODIMP
+WindowsUIUtils::GetSystemSmallIconSize(int32_t* aSize) {
+ NS_ENSURE_ARG(aSize);
+
+ mozilla::LayoutDeviceIntSize size =
+ nsWindowGfx::GetIconMetrics(nsWindowGfx::kSmallIcon);
+ *aSize = std::max(size.width, size.height);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::GetSystemLargeIconSize(int32_t* aSize) {
+ NS_ENSURE_ARG(aSize);
+
+ mozilla::LayoutDeviceIntSize size =
+ nsWindowGfx::GetIconMetrics(nsWindowGfx::kRegularIcon);
+ *aSize = std::max(size.width, size.height);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::SetWindowIcon(mozIDOMWindowProxy* aWindow,
+ imgIContainer* aSmallIcon,
+ imgIContainer* aBigIcon) {
+ NS_ENSURE_ARG(aWindow);
+
+ nsCOMPtr<nsIWidget> widget =
+ nsGlobalWindowOuter::Cast(aWindow)->GetMainWidget();
+ nsWindow* window = static_cast<nsWindow*>(widget.get());
+
+ nsresult rv;
+
+ if (aSmallIcon) {
+ HICON hIcon = nullptr;
+ rv = nsWindowGfx::CreateIcon(
+ aSmallIcon, false, mozilla::LayoutDeviceIntPoint(),
+ nsWindowGfx::GetIconMetrics(nsWindowGfx::kSmallIcon), &hIcon);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ window->SetSmallIcon(hIcon);
+ }
+
+ if (aBigIcon) {
+ HICON hIcon = nullptr;
+ rv = nsWindowGfx::CreateIcon(
+ aBigIcon, false, mozilla::LayoutDeviceIntPoint(),
+ nsWindowGfx::GetIconMetrics(nsWindowGfx::kRegularIcon), &hIcon);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ window->SetBigIcon(hIcon);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::SetWindowIconFromExe(mozIDOMWindowProxy* aWindow,
+ const nsAString& aExe, uint16_t aIndex) {
+ NS_ENSURE_ARG(aWindow);
+
+ nsCOMPtr<nsIWidget> widget =
+ nsGlobalWindowOuter::Cast(aWindow)->GetMainWidget();
+ nsWindow* window = static_cast<nsWindow*>(widget.get());
+
+ HICON icon = ::LoadIconW(::GetModuleHandleW(PromiseFlatString(aExe).get()),
+ MAKEINTRESOURCEW(aIndex));
+ window->SetBigIcon(icon);
+ window->SetSmallIcon(icon);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::SetWindowIconNoData(mozIDOMWindowProxy* aWindow) {
+ NS_ENSURE_ARG(aWindow);
+
+ nsCOMPtr<nsIWidget> widget =
+ nsGlobalWindowOuter::Cast(aWindow)->GetMainWidget();
+ nsWindow* window = static_cast<nsWindow*>(widget.get());
+
+ window->SetSmallIconNoData();
+ window->SetBigIconNoData();
+
+ return NS_OK;
+}
+
+bool WindowsUIUtils::GetInTabletMode() {
+ MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
+ if (sInTabletModeState == TabletModeState::Unknown) {
+ UpdateInTabletMode();
+ }
+ return sInTabletModeState == TabletModeState::On;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::GetInTabletMode(bool* aResult) {
+ *aResult = GetInTabletMode();
+ return NS_OK;
+}
+
+static IInspectable* GetUISettings() {
+ MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
+#ifndef __MINGW32__
+ // We need to keep this alive for ~ever so that change callbacks work as
+ // expected, sigh.
+ static StaticRefPtr<IInspectable> sUiSettingsAsInspectable;
+
+ if (!sUiSettingsAsInspectable) {
+ ComPtr<IInspectable> uiSettingsAsInspectable;
+ ::RoActivateInstance(
+ HStringReference(RuntimeClass_Windows_UI_ViewManagement_UISettings)
+ .Get(),
+ &uiSettingsAsInspectable);
+ if (NS_WARN_IF(!uiSettingsAsInspectable)) {
+ return nullptr;
+ }
+
+ ComPtr<IUISettings5> uiSettings5;
+ if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings5))) {
+ EventRegistrationToken unusedToken;
+ auto callback = Callback<ITypedEventHandler<
+ UISettings*, UISettingsAutoHideScrollBarsChangedEventArgs*>>(
+ [](auto...) {
+ // Scrollbar sizes change layout.
+ LookAndFeel::NotifyChangedAllWindows(
+ widget::ThemeChangeKind::StyleAndLayout);
+ return S_OK;
+ });
+ (void)NS_WARN_IF(FAILED(uiSettings5->add_AutoHideScrollBarsChanged(
+ callback.Get(), &unusedToken)));
+ }
+
+ ComPtr<IUISettings2> uiSettings2;
+ if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings2))) {
+ EventRegistrationToken unusedToken;
+ auto callback =
+ Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
+ // Text scale factor changes style and layout.
+ LookAndFeel::NotifyChangedAllWindows(
+ widget::ThemeChangeKind::StyleAndLayout);
+ return S_OK;
+ });
+ (void)NS_WARN_IF(FAILED(uiSettings2->add_TextScaleFactorChanged(
+ callback.Get(), &unusedToken)));
+ }
+
+ ComPtr<IUISettings3> uiSettings3;
+ if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings3))) {
+ EventRegistrationToken unusedToken;
+ auto callback =
+ Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
+ // System color changes change style only.
+ LookAndFeel::NotifyChangedAllWindows(
+ widget::ThemeChangeKind::Style);
+ return S_OK;
+ });
+ (void)NS_WARN_IF(FAILED(
+ uiSettings3->add_ColorValuesChanged(callback.Get(), &unusedToken)));
+ }
+
+ ComPtr<IUISettings4> uiSettings4;
+ if (SUCCEEDED(uiSettingsAsInspectable.As(&uiSettings4))) {
+ EventRegistrationToken unusedToken;
+ auto callback =
+ Callback<ITypedEventHandler<UISettings*, IInspectable*>>([](auto...) {
+ // Transparent effects changes change media queries only.
+ LookAndFeel::NotifyChangedAllWindows(
+ widget::ThemeChangeKind::MediaQueriesOnly);
+ return S_OK;
+ });
+ (void)NS_WARN_IF(FAILED(uiSettings4->add_AdvancedEffectsEnabledChanged(
+ callback.Get(), &unusedToken)));
+ }
+
+ sUiSettingsAsInspectable = dont_AddRef(uiSettingsAsInspectable.Detach());
+ ClearOnShutdown(&sUiSettingsAsInspectable);
+ }
+
+ return sUiSettingsAsInspectable.get();
+#else
+ return nullptr;
+#endif
+}
+
+Maybe<nscolor> WindowsUIUtils::GetAccentColor(int aTone) {
+ MOZ_ASSERT(aTone >= -3);
+ MOZ_ASSERT(aTone <= 3);
+#ifndef __MINGW32__
+ ComPtr<IInspectable> settings = GetUISettings();
+ if (NS_WARN_IF(!settings)) {
+ return Nothing();
+ }
+ ComPtr<IUISettings3> uiSettings3;
+ if (NS_WARN_IF(FAILED(settings.As(&uiSettings3)))) {
+ return Nothing();
+ }
+ Color color;
+ auto colorType = UIColorType(int(UIColorType_Accent) + aTone);
+ if (NS_WARN_IF(FAILED(uiSettings3->GetColorValue(colorType, &color)))) {
+ return Nothing();
+ }
+ return Some(NS_RGBA(color.R, color.G, color.B, color.A));
+#else
+ return Nothing();
+#endif
+}
+
+Maybe<nscolor> WindowsUIUtils::GetSystemColor(ColorScheme aScheme,
+ int aSysColor) {
+#ifndef __MINGW32__
+ if (!StaticPrefs::widget_windows_uwp_system_colors_enabled()) {
+ return Nothing();
+ }
+
+ // https://docs.microsoft.com/en-us/windows/apps/design/style/color
+ // Is a useful resource to see which values have decent contrast.
+ if (StaticPrefs::widget_windows_uwp_system_colors_highlight_accent()) {
+ if (aSysColor == COLOR_HIGHLIGHT) {
+ int tone = aScheme == ColorScheme::Light ? 0 : -1;
+ if (auto c = GetAccentColor(tone)) {
+ return c;
+ }
+ }
+ if (aSysColor == COLOR_HIGHLIGHTTEXT && GetAccentColor()) {
+ return Some(NS_RGBA(255, 255, 255, 255));
+ }
+ }
+
+ if (aScheme == ColorScheme::Dark) {
+ // There are no explicitly dark colors in UWP, other than the highlight
+ // colors above.
+ return Nothing();
+ }
+
+ auto knownType = [&]() -> Maybe<UIElementType> {
+# define MAP(_win32, _uwp) \
+ case COLOR_##_win32: \
+ return Some(UIElementType_##_uwp)
+ switch (aSysColor) {
+ MAP(HIGHLIGHT, Highlight);
+ MAP(HIGHLIGHTTEXT, HighlightText);
+ MAP(ACTIVECAPTION, ActiveCaption);
+ MAP(BTNFACE, ButtonFace);
+ MAP(BTNTEXT, ButtonText);
+ MAP(CAPTIONTEXT, CaptionText);
+ MAP(GRAYTEXT, GrayText);
+ MAP(HOTLIGHT, Hotlight);
+ MAP(INACTIVECAPTION, InactiveCaption);
+ MAP(INACTIVECAPTIONTEXT, InactiveCaptionText);
+ MAP(WINDOW, Window);
+ MAP(WINDOWTEXT, WindowText);
+ default:
+ return Nothing();
+ }
+# undef MAP
+ }();
+ if (!knownType) {
+ return Nothing();
+ }
+ ComPtr<IInspectable> settings = GetUISettings();
+ if (NS_WARN_IF(!settings)) {
+ return Nothing();
+ }
+ ComPtr<IUISettings> uiSettings;
+ if (NS_WARN_IF(FAILED(settings.As(&uiSettings)))) {
+ return Nothing();
+ }
+ Color color;
+ if (NS_WARN_IF(FAILED(uiSettings->UIElementColor(*knownType, &color)))) {
+ return Nothing();
+ }
+ return Some(NS_RGBA(color.R, color.G, color.B, color.A));
+#else
+ return Nothing();
+#endif
+}
+bool WindowsUIUtils::ComputeOverlayScrollbars() {
+#ifndef __MINGW32__
+ if (!IsWin11OrLater()) {
+ // While in theory Windows 10 supports overlay scrollbar settings, it's off
+ // by default and it's untested whether our Win10 scrollbar drawing code
+ // deals with it properly.
+ return false;
+ }
+ if (!StaticPrefs::widget_windows_overlay_scrollbars_enabled()) {
+ return false;
+ }
+ ComPtr<IInspectable> settings = GetUISettings();
+ if (NS_WARN_IF(!settings)) {
+ return false;
+ }
+ ComPtr<IUISettings5> uiSettings5;
+ if (NS_WARN_IF(FAILED(settings.As(&uiSettings5)))) {
+ return false;
+ }
+ boolean autoHide = false;
+ if (NS_WARN_IF(FAILED(uiSettings5->get_AutoHideScrollBars(&autoHide)))) {
+ return false;
+ }
+ return autoHide;
+#else
+ return false;
+#endif
+}
+
+double WindowsUIUtils::ComputeTextScaleFactor() {
+#ifndef __MINGW32__
+ ComPtr<IInspectable> settings = GetUISettings();
+ if (NS_WARN_IF(!settings)) {
+ return 1.0;
+ }
+ ComPtr<IUISettings2> uiSettings2;
+ if (NS_WARN_IF(FAILED(settings.As(&uiSettings2)))) {
+ return false;
+ }
+ double scaleFactor = 1.0;
+ if (NS_WARN_IF(FAILED(uiSettings2->get_TextScaleFactor(&scaleFactor)))) {
+ return 1.0;
+ }
+ return scaleFactor;
+#else
+ return 1.0;
+#endif
+}
+
+bool WindowsUIUtils::ComputeTransparencyEffects() {
+ constexpr bool kDefault = true;
+#ifndef __MINGW32__
+ ComPtr<IInspectable> settings = GetUISettings();
+ if (NS_WARN_IF(!settings)) {
+ return kDefault;
+ }
+ ComPtr<IUISettings4> uiSettings4;
+ if (NS_WARN_IF(FAILED(settings.As(&uiSettings4)))) {
+ return kDefault;
+ }
+ boolean transparencyEffects = kDefault;
+ if (NS_WARN_IF(FAILED(
+ uiSettings4->get_AdvancedEffectsEnabled(&transparencyEffects)))) {
+ return kDefault;
+ }
+ return transparencyEffects;
+#else
+ return kDefault;
+#endif
+}
+
+void WindowsUIUtils::UpdateInTabletMode() {
+#ifndef __MINGW32__
+ nsresult rv;
+ nsCOMPtr<nsIWindowMediator> winMediator(
+ do_GetService(NS_WINDOWMEDIATOR_CONTRACTID, &rv));
+ if (NS_FAILED(rv)) {
+ return;
+ }
+
+ nsCOMPtr<nsIWidget> widget;
+ nsCOMPtr<mozIDOMWindowProxy> navWin;
+
+ rv = winMediator->GetMostRecentWindow(u"navigator:browser",
+ getter_AddRefs(navWin));
+ if (NS_FAILED(rv) || !navWin) {
+ // Fall back to the hidden window
+ nsCOMPtr<nsIAppShellService> appShell(
+ do_GetService(NS_APPSHELLSERVICE_CONTRACTID));
+
+ rv = appShell->GetHiddenDOMWindow(getter_AddRefs(navWin));
+ if (NS_FAILED(rv) || !navWin) {
+ return;
+ }
+ }
+
+ nsPIDOMWindowOuter* win = nsPIDOMWindowOuter::From(navWin);
+ widget = widget::WidgetUtils::DOMWindowToWidget(win);
+
+ if (!widget) {
+ return;
+ }
+
+ HWND winPtr = (HWND)widget->GetNativeData(NS_NATIVE_WINDOW);
+ ComPtr<IUIViewSettingsInterop> uiViewSettingsInterop;
+
+ HRESULT hr = GetActivationFactory(
+ HStringReference(RuntimeClass_Windows_UI_ViewManagement_UIViewSettings)
+ .Get(),
+ &uiViewSettingsInterop);
+ if (FAILED(hr)) {
+ return;
+ }
+ ComPtr<IUIViewSettings> uiViewSettings;
+ hr = uiViewSettingsInterop->GetForWindow(winPtr,
+ IID_PPV_ARGS(&uiViewSettings));
+ if (FAILED(hr)) {
+ return;
+ }
+ UserInteractionMode mode;
+ hr = uiViewSettings->get_UserInteractionMode(&mode);
+ if (FAILED(hr)) {
+ return;
+ }
+
+ TabletModeState oldTabletModeState = sInTabletModeState;
+ sInTabletModeState = mode == UserInteractionMode_Touch ? TabletModeState::On
+ : TabletModeState::Off;
+ if (sInTabletModeState != oldTabletModeState) {
+ nsCOMPtr<nsIObserverService> observerService =
+ mozilla::services::GetObserverService();
+ observerService->NotifyObservers(nullptr, "tablet-mode-change",
+ sInTabletModeState == TabletModeState::On
+ ? u"tablet-mode"
+ : u"normal-mode");
+ }
+#endif
+}
+
+#ifndef __MINGW32__
+struct HStringDeleter {
+ using pointer = HSTRING;
+ void operator()(pointer aString) { WindowsDeleteString(aString); }
+};
+
+using HStringUniquePtr = UniquePtr<HSTRING, HStringDeleter>;
+
+Result<HStringUniquePtr, HRESULT> ConvertToWindowsString(
+ const nsAString& aStr) {
+ HSTRING rawStr;
+ HRESULT hr = WindowsCreateString(PromiseFlatString(aStr).get(), aStr.Length(),
+ &rawStr);
+ if (FAILED(hr)) {
+ return Err(hr);
+ }
+ return HStringUniquePtr(rawStr);
+}
+
+static Result<Ok, nsresult> RequestShare(
+ const std::function<HRESULT(IDataRequestedEventArgs* pArgs)>& aCallback) {
+ HWND hwnd = GetForegroundWindow();
+ if (!hwnd) {
+ return Err(NS_ERROR_FAILURE);
+ }
+
+ ComPtr<IDataTransferManagerInterop> dtmInterop;
+ ComPtr<IDataTransferManager> dtm;
+
+ HRESULT hr = RoGetActivationFactory(
+ HStringReference(
+ RuntimeClass_Windows_ApplicationModel_DataTransfer_DataTransferManager)
+ .Get(),
+ IID_PPV_ARGS(&dtmInterop));
+ if (FAILED(hr) ||
+ FAILED(dtmInterop->GetForWindow(hwnd, IID_PPV_ARGS(&dtm)))) {
+ return Err(NS_ERROR_FAILURE);
+ }
+
+ auto callback = Callback<
+ ITypedEventHandler<DataTransferManager*, DataRequestedEventArgs*>>(
+ [aCallback](IDataTransferManager*,
+ IDataRequestedEventArgs* pArgs) -> HRESULT {
+ return aCallback(pArgs);
+ });
+
+ EventRegistrationToken dataRequestedToken;
+ if (FAILED(dtm->add_DataRequested(callback.Get(), &dataRequestedToken)) ||
+ FAILED(dtmInterop->ShowShareUIForWindow(hwnd))) {
+ return Err(NS_ERROR_FAILURE);
+ }
+
+ return Ok();
+}
+
+static Result<Ok, nsresult> AddShareEventListeners(
+ const RefPtr<mozilla::media::Refcountable<MozPromiseHolder<SharePromise>>>&
+ aPromiseHolder,
+ const ComPtr<IDataPackage>& aDataPackage) {
+ ComPtr<IDataPackage3> spDataPackage3;
+
+ if (FAILED(aDataPackage.As(&spDataPackage3))) {
+ return Err(NS_ERROR_FAILURE);
+ }
+
+ auto completedCallback =
+ Callback<ITypedEventHandler<DataPackage*, ShareCompletedEventArgs*>>(
+ [aPromiseHolder](IDataPackage*,
+ IShareCompletedEventArgs*) -> HRESULT {
+ aPromiseHolder->Resolve(true, __func__);
+ return S_OK;
+ });
+
+ EventRegistrationToken dataRequestedToken;
+ if (FAILED(spDataPackage3->add_ShareCompleted(completedCallback.Get(),
+ &dataRequestedToken))) {
+ return Err(NS_ERROR_FAILURE);
+ }
+
+ ComPtr<IDataPackage4> spDataPackage4;
+ if (SUCCEEDED(aDataPackage.As(&spDataPackage4))) {
+ // Use SharedCanceled API only on supported versions of Windows
+ // So that the older ones can still use ShareUrl()
+
+ auto canceledCallback =
+ Callback<ITypedEventHandler<DataPackage*, IInspectable*>>(
+ [aPromiseHolder](IDataPackage*, IInspectable*) -> HRESULT {
+ aPromiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return S_OK;
+ });
+
+ if (FAILED(spDataPackage4->add_ShareCanceled(canceledCallback.Get(),
+ &dataRequestedToken))) {
+ return Err(NS_ERROR_FAILURE);
+ }
+ }
+
+ return Ok();
+}
+#endif
+
+RefPtr<SharePromise> WindowsUIUtils::Share(nsAutoString aTitle,
+ nsAutoString aText,
+ nsAutoString aUrl) {
+ auto promiseHolder = MakeRefPtr<
+ mozilla::media::Refcountable<MozPromiseHolder<SharePromise>>>();
+ RefPtr<SharePromise> promise = promiseHolder->Ensure(__func__);
+
+#ifndef __MINGW32__
+ auto result = RequestShare([promiseHolder, title = std::move(aTitle),
+ text = std::move(aText), url = std::move(aUrl)](
+ IDataRequestedEventArgs* pArgs) {
+ ComPtr<IDataRequest> spDataRequest;
+ ComPtr<IDataPackage> spDataPackage;
+ ComPtr<IDataPackage2> spDataPackage2;
+ ComPtr<IDataPackagePropertySet> spDataPackageProperties;
+
+ if (FAILED(pArgs->get_Request(&spDataRequest)) ||
+ FAILED(spDataRequest->get_Data(&spDataPackage)) ||
+ FAILED(spDataPackage.As(&spDataPackage2)) ||
+ FAILED(spDataPackage->get_Properties(&spDataPackageProperties))) {
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return E_FAIL;
+ }
+
+ /*
+ * Windows always requires a title, and an empty string does not work.
+ * Thus we trick the API by passing a whitespace when we have no title.
+ * https://docs.microsoft.com/en-us/windows/uwp/app-to-app/share-data
+ */
+ auto wTitle = ConvertToWindowsString((title.IsVoid() || title.Length() == 0)
+ ? nsAutoString(u" "_ns)
+ : title);
+ if (wTitle.isErr() ||
+ FAILED(spDataPackageProperties->put_Title(wTitle.unwrap().get()))) {
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return E_FAIL;
+ }
+
+ // Assign even if empty, as Windows requires some data to share
+ auto wText = ConvertToWindowsString(text);
+ if (wText.isErr() || FAILED(spDataPackage->SetText(wText.unwrap().get()))) {
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return E_FAIL;
+ }
+
+ if (!url.IsVoid()) {
+ auto wUrl = ConvertToWindowsString(url);
+ if (wUrl.isErr()) {
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return wUrl.unwrapErr();
+ }
+
+ ComPtr<IUriRuntimeClassFactory> uriFactory;
+ ComPtr<IUriRuntimeClass> uri;
+
+ auto hr = GetActivationFactory(
+ HStringReference(RuntimeClass_Windows_Foundation_Uri).Get(),
+ &uriFactory);
+
+ if (FAILED(hr) ||
+ FAILED(uriFactory->CreateUri(wUrl.unwrap().get(), &uri)) ||
+ FAILED(spDataPackage2->SetWebLink(uri.Get()))) {
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return E_FAIL;
+ }
+ }
+
+ if (!StaticPrefs::widget_windows_share_wait_action_enabled()) {
+ promiseHolder->Resolve(true, __func__);
+ } else if (AddShareEventListeners(promiseHolder, spDataPackage).isErr()) {
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+ return E_FAIL;
+ }
+
+ return S_OK;
+ });
+ if (result.isErr()) {
+ promiseHolder->Reject(result.unwrapErr(), __func__);
+ }
+#else
+ promiseHolder->Reject(NS_ERROR_FAILURE, __func__);
+#endif
+
+ return promise;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::ShareUrl(const nsAString& aUrlToShare,
+ const nsAString& aShareTitle) {
+ nsAutoString text;
+ text.SetIsVoid(true);
+ WindowsUIUtils::Share(nsAutoString(aShareTitle), text,
+ nsAutoString(aUrlToShare));
+ return NS_OK;
+}