daleharvey/gist:0e37d38b0d6fa05f148746ff4d6344fb

## gistfile1.txt
From fb33d1c9334762cbedbfc40c343ee006ef8c7726 Mon Sep 17 00:00:00 2001
From: Dale Harvey <dale@arandomurl.com>
Date: Wed, 26 Sep 2018 21:09:00 +0100
Subject: [PATCH] Bug 1363169 - Add support for native windows share

---
 browser/base/content/browser-pageActions.js   |  14 ++-
 browser/base/content/test/urlbar/browser.ini  |   4 +
 .../browser_page_action_menu_share_win.html   |   2 +
 .../browser_page_action_menu_share_win.js     |  45 +++++++
 browser/modules/PageActions.jsm               |  15 +++
 browser/themes/windows/browser.css            |   4 +
 browser/themes/windows/jar.mn                 |   1 +
 browser/themes/windows/share.svg              |   7 ++
 widget/nsIWindowsUIUtils.idl                  |   6 +-
 widget/windows/WindowsUIUtils.cpp             | 110 ++++++++++++++++++
 10 files changed, 203 insertions(+), 5 deletions(-)
 create mode 100644 browser/base/content/test/urlbar/browser_page_action_menu_share_win.html
 create mode 100644 browser/base/content/test/urlbar/browser_page_action_menu_share_win.js
 create mode 100644 browser/themes/windows/share.svg

diff --git a/browser/base/content/browser-pageActions.js b/browser/base/content/browser-pageActions.js
index 9510d58d344e..91295e0a16c1 100644
--- a/browser/base/content/browser-pageActions.js
+++ b/browser/base/content/browser-pageActions.js
@@ -1197,6 +1197,12 @@ BrowserPageActions.addSearchEngine = {

 // share URL
 BrowserPageActions.shareURL = {
+  onCommand(event, buttonNode) {
+    let browser = gBrowser.selectedBrowser;
+    let currentURI = gURLBar.makeURIReadable(browser.currentURI).displaySpec;
+    this._windowsUIUtils.shareUrl(currentURI, browser.contentTitle);
+  },
+
   onShowingInPanel(buttonNode) {
     this._cached = false;
   },
@@ -1258,7 +1264,7 @@ BrowserPageActions.shareURL = {
 };

 // Attach sharingService here so tests can override the implementation
-XPCOMUtils.defineLazyServiceGetter(BrowserPageActions.shareURL,
-                                   "_sharingService",
-                                   "@mozilla.org/widget/macsharingservice;1",
-                                   "nsIMacSharingService");
+XPCOMUtils.defineLazyServiceGetters(BrowserPageActions.shareURL, {
+  _sharingService: ["@mozilla.org/widget/macsharingservice;1", "nsIMacSharingService"],
+  _windowsUIUtils: ["@mozilla.org/windows-ui-utils;1", "nsIWindowsUIUtils"],
+});
diff --git a/browser/base/content/test/urlbar/browser.ini b/browser/base/content/test/urlbar/browser.ini
index 71bbb56162e7..cd8a8249bf9b 100644
--- a/browser/base/content/test/urlbar/browser.ini
+++ b/browser/base/content/test/urlbar/browser.ini
@@ -57,6 +57,10 @@ support-files =
 subsuite = clipboard
 [browser_page_action_menu_share_mac.js]
 skip-if = os != "mac" # Mac only feature
+[browser_page_action_menu_share_win.js]
+support-files =
+  browser_page_action_menu_share_win.html
+skip-if = os != "win" # Windows only feature
 [browser_pasteAndGo.js]
 subsuite = clipboard
 [browser_populateAfterPushState.js]
diff --git a/browser/base/content/test/urlbar/browser_page_action_menu_share_win.html b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.html
new file mode 100644
index 000000000000..6c47f98c7e24
--- /dev/null
+++ b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.html
@@ -0,0 +1,2 @@
+<!doctype html>
+<title>Windows Sharing</title>
diff --git a/browser/base/content/test/urlbar/browser_page_action_menu_share_win.js b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.js
new file mode 100644
index 000000000000..f98602571578
--- /dev/null
+++ b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.js
@@ -0,0 +1,45 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* global sinon */
+Services.scriptloader.loadSubScript("resource://testing-common/sinon-2.3.2.js");
+
+const TEST_URL = getRootDirectory(gTestPath) + "browser_page_action_menu_share_win.html";
+
+// Keep track of site details we are sharing
+let sharedUrl, sharedTitle;
+
+let stub = sinon.stub(BrowserPageActions.shareURL, "_windowsUIUtils").get(() => {
+  return {
+    shareUrl(url, title) {
+      sharedUrl = url;
+      sharedTitle = title;
+    },
+  };
+});
+
+registerCleanupFunction(async function() {
+  stub.restore();
+  delete window.sinon;
+});
+
+add_task(async function shareURL() {
+  await BrowserTestUtils.withNewTab(TEST_URL, async () => {
+    // Open the panel.
+    await promisePageActionPanelOpen();
+
+    // Click Share URL.
+    let shareURLButton = document.getElementById("pageAction-panel-shareURL");
+    let hiddenPromise = promisePageActionPanelHidden();
+    EventUtils.synthesizeMouseAtCenter(shareURLButton, {});
+
+    await hiddenPromise;
+
+    Assert.equal(sharedUrl, TEST_URL,
+                 "Shared correct URL");
+    Assert.equal(sharedTitle, "Windows Sharing",
+                 "Shared with the correct title");
+  });
+});
diff --git a/browser/modules/PageActions.jsm b/browser/modules/PageActions.jsm
index 40c4b307fd0b..6a1dc698c27f 100644
--- a/browser/modules/PageActions.jsm
+++ b/browser/modules/PageActions.jsm
@@ -1179,6 +1179,21 @@ if (AppConstants.platform == "macosx") {
   });
 }

+if (AppConstants.isPlatformAndVersionAtLeast("win", "6.4")) {
+  gBuiltInActions.push(
+  // Share URL
+  {
+    id: "shareURL",
+    title: "shareURL-title",
+    onBeforePlacedInWindow(buttonNode) {
+      browserPageActions(buttonNode).shareURL.onBeforePlacedInWindow(buttonNode);
+    },
+    onCommand(event, buttonNode) {
+      browserPageActions(buttonNode).shareURL.onCommand(event, buttonNode);
+    },
+  });
+}
+
 /**
  * Gets a BrowserPageActions object in a browser window.
  *
diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index e79e700a0f3a..4206918a82ce 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -597,6 +597,10 @@ html|*.urlbar-input:-moz-lwtheme::placeholder,
   color: GrayText;
 }

+#pageAction-panel-shareURL {
+  list-style-image: url("chrome://browser/skin/share.svg");
+}
+
 %include ../shared/urlbarSearchSuggestionsNotification.inc.css

 #search-container {
diff --git a/browser/themes/windows/jar.mn b/browser/themes/windows/jar.mn
index e6ce8e18a498..57e60ea7cbaa 100644
--- a/browser/themes/windows/jar.mn
+++ b/browser/themes/windows/jar.mn
@@ -41,6 +41,7 @@ browser.jar:
 * skin/classic/browser/preferences/in-content/preferences.css  (preferences/in-content/preferences.css)
 * skin/classic/browser/preferences/in-content/dialog.css       (preferences/in-content/dialog.css)
   skin/classic/browser/preferences/applications.css            (preferences/applications.css)
+  skin/classic/browser/share.svg                               (share.svg)
   skin/classic/browser/tabbrowser/tabDragIndicator.png         (tabbrowser/tabDragIndicator.png)
   skin/classic/browser/window-controls/close.svg                 (window-controls/close.svg)
   skin/classic/browser/window-controls/close-highcontrast.svg    (window-controls/close-highcontrast.svg)
diff --git a/browser/themes/windows/share.svg b/browser/themes/windows/share.svg
new file mode 100644
index 000000000000..3d5c2fe86f2b
--- /dev/null
+++ b/browser/themes/windows/share.svg
@@ -0,0 +1,7 @@
+<!-- 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/. -->
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16">
+  <path fill="context-fill" d="M 15.707 4.293 l -4 -4 a 1 1 0 0 0 -1.414 1.414 L 12.585 4 H 11 a 7.008 7.008 0 0 0 -7 7 a 1 1 0 0 0 2 0 a 5.006 5.006 0 0 1 5 -5 h 1.585 l -2.293 2.293 a 1 1 0 1 0 1.414 1.414 l 4 -4 a 1 1 0 0 0 0.001 -1.414 Z" />
+  <path fill="context-fill" d="M 13 11 a 1 1 0 0 0 -1 1 v 1 a 1 1 0 0 1 -1 1 H 3 a 1 1 0 0 1 -1 -1 V 6 a 1 1 0 0 1 1 -1 h 1 a 1 1 0 0 0 0 -2 H 3 a 3 3 0 0 0 -3 3 v 7 a 3 3 0 0 0 3 3 h 8 a 3 3 0 0 0 3 -3 v -1 a 1 1 0 0 0 -1 -1 Z" />
+</svg>
diff --git a/widget/nsIWindowsUIUtils.idl b/widget/nsIWindowsUIUtils.idl
index 331562a67245..779cc4ac9af5 100644
--- a/widget/nsIWindowsUIUtils.idl
+++ b/widget/nsIWindowsUIUtils.idl
@@ -20,5 +20,9 @@ interface nsIWindowsUIUtils : nsISupports
    * Update the tablet mode state
    */
   void updateTabletModeState();
-};

+  /**
+   * Share URL
+   */
+  void shareUrl(in AString shareTitle, in AString urlToShare);
+};
diff --git a/widget/windows/WindowsUIUtils.cpp b/widget/windows/WindowsUIUtils.cpp
index 4d916d25cf1e..ca4514e31ae5 100644
--- a/widget/windows/WindowsUIUtils.cpp
+++ b/widget/windows/WindowsUIUtils.cpp
@@ -35,6 +35,7 @@ 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;

 /* All of this is win10 stuff and we're compiling against win81 headers
  * for now, so we may need to do some legwork: */
@@ -90,6 +91,20 @@ public:
 };
 #endif

+#ifndef __IDataTransferManagerInterop_INTERFACE_DEFINED__
+
+typedef interface IDataTransferManagerInterop 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
+
 #endif

 WindowsUIUtils::WindowsUIUtils() :
@@ -178,3 +193,98 @@ WindowsUIUtils::UpdateTabletModeState()

   return NS_OK;
 }
+
+struct HStringDeleter
+{
+  typedef HSTRING pointer;
+  void operator()(pointer aString)
+  {
+      WindowsDeleteString(aString);
+  }
+};
+
+typedef mozilla::UniquePtr<HSTRING, HStringDeleter> HStringUniquePtr;
+
+NS_IMETHODIMP
+WindowsUIUtils::ShareUrl(const nsAString& aUrlToShare,
+                         const nsAString& aShareTitle)
+{
+#ifndef __MINGW32__
+  if (!IsWin10OrLater()) {
+    return NS_OK;
+  }
+
+  HStringUniquePtr title;
+  HSTRING rawTitle;
+  HSTRING url;
+
+  HRESULT hr = WindowsCreateString(PromiseFlatString(aShareTitle).get(), aShareTitle.Length(), &rawTitle);
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+  title.reset(rawTitle);
+
+  hr = WindowsCreateString(PromiseFlatString(aUrlToShare).get(), aUrlToShare.Length(), &url);
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+  ComPtr<IUriRuntimeClassFactory> uriFactory;
+  hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_Foundation_Uri).Get(), &uriFactory);
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+  ComPtr<IUriRuntimeClass> uri;
+  hr = uriFactory->CreateUri(url, &uri);
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+  HWND hwnd = GetForegroundWindow();
+  ComPtr<IDataTransferManagerInterop> dtmInterop;
+  ComPtr<IDataTransferManager> dtm;
+  EventRegistrationToken dataRequestedToken;
+
+  hr = RoGetActivationFactory(HStringReference(
+    RuntimeClass_Windows_ApplicationModel_DataTransfer_DataTransferManager)
+                         .Get(), IID_PPV_ARGS(&dtmInterop));
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+  hr = dtmInterop->GetForWindow(hwnd, IID_PPV_ARGS(&dtm));
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+  auto callback = Callback < ITypedEventHandler<DataTransferManager*, DataRequestedEventArgs* >> (
+          [=](IDataTransferManager*, IDataRequestedEventArgs* pArgs) -> HRESULT
+    {
+      ComPtr<IDataRequest> spDataRequest;
+      pArgs->get_Request(&spDataRequest);
+      ComPtr<IDataPackage> spDataPackage;
+      spDataRequest->get_Data(&spDataPackage);
+      ComPtr<IDataPackagePropertySet> spDataPackageProperties;
+      spDataPackage->get_Properties(&spDataPackageProperties);
+
+      spDataPackageProperties->put_Title(title.get());
+      spDataPackage->SetUri(uri.Get());
+
+      return S_OK;
+    });
+
+  hr = dtm->add_DataRequested(callback.Get(), &dataRequestedToken);
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+  hr = dtmInterop->ShowShareUIForWindow(hwnd);
+  if (FAILED(hr)) {
+    return NS_OK;
+  }
+
+#endif
+
+  return NS_OK;
+}
--
2.18.0.windows.1
	From fb33d1c9334762cbedbfc40c343ee006ef8c7726 Mon Sep 17 00:00:00 2001
	From: Dale Harvey <dale@arandomurl.com>
	Date: Wed, 26 Sep 2018 21:09:00 +0100
	Subject: [PATCH] Bug 1363169 - Add support for native windows share

	---
	browser/base/content/browser-pageActions.js \| 14 ++-
	browser/base/content/test/urlbar/browser.ini \| 4 +
	.../browser_page_action_menu_share_win.html \| 2 +
	.../browser_page_action_menu_share_win.js \| 45 +++++++
	browser/modules/PageActions.jsm \| 15 +++
	browser/themes/windows/browser.css \| 4 +
	browser/themes/windows/jar.mn \| 1 +
	browser/themes/windows/share.svg \| 7 ++
	widget/nsIWindowsUIUtils.idl \| 6 +-
	widget/windows/WindowsUIUtils.cpp \| 110 ++++++++++++++++++
	10 files changed, 203 insertions(+), 5 deletions(-)
	create mode 100644 browser/base/content/test/urlbar/browser_page_action_menu_share_win.html
	create mode 100644 browser/base/content/test/urlbar/browser_page_action_menu_share_win.js
	create mode 100644 browser/themes/windows/share.svg

	diff --git a/browser/base/content/browser-pageActions.js b/browser/base/content/browser-pageActions.js
	index 9510d58d344e..91295e0a16c1 100644
	--- a/browser/base/content/browser-pageActions.js
	+++ b/browser/base/content/browser-pageActions.js
	@@ -1197,6 +1197,12 @@ BrowserPageActions.addSearchEngine = {

	// share URL
	BrowserPageActions.shareURL = {
	+ onCommand(event, buttonNode) {
	+ let browser = gBrowser.selectedBrowser;
	+ let currentURI = gURLBar.makeURIReadable(browser.currentURI).displaySpec;
	+ this._windowsUIUtils.shareUrl(currentURI, browser.contentTitle);
	+ },
	+
	onShowingInPanel(buttonNode) {
	this._cached = false;
	},
	@@ -1258,7 +1264,7 @@ BrowserPageActions.shareURL = {
	};

	// Attach sharingService here so tests can override the implementation
	-XPCOMUtils.defineLazyServiceGetter(BrowserPageActions.shareURL,
	- "_sharingService",
	- "@mozilla.org/widget/macsharingservice;1",
	- "nsIMacSharingService");
	+XPCOMUtils.defineLazyServiceGetters(BrowserPageActions.shareURL, {
	+ _sharingService: ["@mozilla.org/widget/macsharingservice;1", "nsIMacSharingService"],
	+ _windowsUIUtils: ["@mozilla.org/windows-ui-utils;1", "nsIWindowsUIUtils"],
	+});
	diff --git a/browser/base/content/test/urlbar/browser.ini b/browser/base/content/test/urlbar/browser.ini
	index 71bbb56162e7..cd8a8249bf9b 100644
	--- a/browser/base/content/test/urlbar/browser.ini
	+++ b/browser/base/content/test/urlbar/browser.ini
	@@ -57,6 +57,10 @@ support-files =
	subsuite = clipboard
	[browser_page_action_menu_share_mac.js]
	skip-if = os != "mac" # Mac only feature
	+[browser_page_action_menu_share_win.js]
	+support-files =
	+ browser_page_action_menu_share_win.html
	+skip-if = os != "win" # Windows only feature
	[browser_pasteAndGo.js]
	subsuite = clipboard
	[browser_populateAfterPushState.js]
	diff --git a/browser/base/content/test/urlbar/browser_page_action_menu_share_win.html b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.html
	new file mode 100644
	index 000000000000..6c47f98c7e24
	--- /dev/null
	+++ b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.html
	@@ -0,0 +1,2 @@
	+<!doctype html>
	+<title>Windows Sharing</title>
	diff --git a/browser/base/content/test/urlbar/browser_page_action_menu_share_win.js b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.js
	new file mode 100644
	index 000000000000..f98602571578
	--- /dev/null
	+++ b/browser/base/content/test/urlbar/browser_page_action_menu_share_win.js
	@@ -0,0 +1,45 @@
	+/* Any copyright is dedicated to the Public Domain.
	+ * http://creativecommons.org/publicdomain/zero/1.0/ */
	+
	+"use strict";
	+
	+/* global sinon */
	+Services.scriptloader.loadSubScript("resource://testing-common/sinon-2.3.2.js");
	+
	+const TEST_URL = getRootDirectory(gTestPath) + "browser_page_action_menu_share_win.html";
	+
	+// Keep track of site details we are sharing
	+let sharedUrl, sharedTitle;
	+
	+let stub = sinon.stub(BrowserPageActions.shareURL, "_windowsUIUtils").get(() => {
	+ return {
	+ shareUrl(url, title) {
	+ sharedUrl = url;
	+ sharedTitle = title;
	+ },
	+ };
	+});
	+
	+registerCleanupFunction(async function() {
	+ stub.restore();
	+ delete window.sinon;
	+});
	+
	+add_task(async function shareURL() {
	+ await BrowserTestUtils.withNewTab(TEST_URL, async () => {
	+ // Open the panel.
	+ await promisePageActionPanelOpen();
	+
	+ // Click Share URL.
	+ let shareURLButton = document.getElementById("pageAction-panel-shareURL");
	+ let hiddenPromise = promisePageActionPanelHidden();
	+ EventUtils.synthesizeMouseAtCenter(shareURLButton, {});
	+
	+ await hiddenPromise;
	+
	+ Assert.equal(sharedUrl, TEST_URL,
	+ "Shared correct URL");
	+ Assert.equal(sharedTitle, "Windows Sharing",
	+ "Shared with the correct title");
	+ });
	+});
	diff --git a/browser/modules/PageActions.jsm b/browser/modules/PageActions.jsm
	index 40c4b307fd0b..6a1dc698c27f 100644
	--- a/browser/modules/PageActions.jsm
	+++ b/browser/modules/PageActions.jsm
	@@ -1179,6 +1179,21 @@ if (AppConstants.platform == "macosx") {
	});
	}

	+if (AppConstants.isPlatformAndVersionAtLeast("win", "6.4")) {
	+ gBuiltInActions.push(
	+ // Share URL
	+ {
	+ id: "shareURL",
	+ title: "shareURL-title",
	+ onBeforePlacedInWindow(buttonNode) {
	+ browserPageActions(buttonNode).shareURL.onBeforePlacedInWindow(buttonNode);
	+ },
	+ onCommand(event, buttonNode) {
	+ browserPageActions(buttonNode).shareURL.onCommand(event, buttonNode);
	+ },
	+ });
	+}
	+
	/**
	* Gets a BrowserPageActions object in a browser window.
	*
	diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
	index e79e700a0f3a..4206918a82ce 100644
	--- a/browser/themes/windows/browser.css
	+++ b/browser/themes/windows/browser.css
	@@ -597,6 +597,10 @@ html\|*.urlbar-input:-moz-lwtheme::placeholder,
	color: GrayText;
	}

	+#pageAction-panel-shareURL {
	+ list-style-image: url("chrome://browser/skin/share.svg");
	+}
	+
	%include ../shared/urlbarSearchSuggestionsNotification.inc.css

	#search-container {
	diff --git a/browser/themes/windows/jar.mn b/browser/themes/windows/jar.mn
	index e6ce8e18a498..57e60ea7cbaa 100644
	--- a/browser/themes/windows/jar.mn
	+++ b/browser/themes/windows/jar.mn
	@@ -41,6 +41,7 @@ browser.jar:
	* skin/classic/browser/preferences/in-content/preferences.css (preferences/in-content/preferences.css)
	* skin/classic/browser/preferences/in-content/dialog.css (preferences/in-content/dialog.css)
	skin/classic/browser/preferences/applications.css (preferences/applications.css)
	+ skin/classic/browser/share.svg (share.svg)
	skin/classic/browser/tabbrowser/tabDragIndicator.png (tabbrowser/tabDragIndicator.png)
	skin/classic/browser/window-controls/close.svg (window-controls/close.svg)
	skin/classic/browser/window-controls/close-highcontrast.svg (window-controls/close-highcontrast.svg)
	diff --git a/browser/themes/windows/share.svg b/browser/themes/windows/share.svg
	new file mode 100644
	index 000000000000..3d5c2fe86f2b
	--- /dev/null
	+++ b/browser/themes/windows/share.svg
	@@ -0,0 +1,7 @@
	+<!-- 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/. -->
	+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16">
	+ <path fill="context-fill" d="M 15.707 4.293 l -4 -4 a 1 1 0 0 0 -1.414 1.414 L 12.585 4 H 11 a 7.008 7.008 0 0 0 -7 7 a 1 1 0 0 0 2 0 a 5.006 5.006 0 0 1 5 -5 h 1.585 l -2.293 2.293 a 1 1 0 1 0 1.414 1.414 l 4 -4 a 1 1 0 0 0 0.001 -1.414 Z" />
	+ <path fill="context-fill" d="M 13 11 a 1 1 0 0 0 -1 1 v 1 a 1 1 0 0 1 -1 1 H 3 a 1 1 0 0 1 -1 -1 V 6 a 1 1 0 0 1 1 -1 h 1 a 1 1 0 0 0 0 -2 H 3 a 3 3 0 0 0 -3 3 v 7 a 3 3 0 0 0 3 3 h 8 a 3 3 0 0 0 3 -3 v -1 a 1 1 0 0 0 -1 -1 Z" />
	+</svg>
	diff --git a/widget/nsIWindowsUIUtils.idl b/widget/nsIWindowsUIUtils.idl
	index 331562a67245..779cc4ac9af5 100644
	--- a/widget/nsIWindowsUIUtils.idl
	+++ b/widget/nsIWindowsUIUtils.idl
	@@ -20,5 +20,9 @@ interface nsIWindowsUIUtils : nsISupports
	* Update the tablet mode state
	*/
	void updateTabletModeState();
	-};

	+ /**
	+ * Share URL
	+ */
	+ void shareUrl(in AString shareTitle, in AString urlToShare);
	+};
	diff --git a/widget/windows/WindowsUIUtils.cpp b/widget/windows/WindowsUIUtils.cpp
	index 4d916d25cf1e..ca4514e31ae5 100644
	--- a/widget/windows/WindowsUIUtils.cpp
	+++ b/widget/windows/WindowsUIUtils.cpp
	@@ -35,6 +35,7 @@ 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;

	/* All of this is win10 stuff and we're compiling against win81 headers
	* for now, so we may need to do some legwork: */
	@@ -90,6 +91,20 @@ public:
	};
	#endif

	+#ifndef __IDataTransferManagerInterop_INTERFACE_DEFINED__
	+
	+typedef interface IDataTransferManagerInterop 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
	+
	#endif

	WindowsUIUtils::WindowsUIUtils() :
	@@ -178,3 +193,98 @@ WindowsUIUtils::UpdateTabletModeState()

	return NS_OK;
	}
	+
	+struct HStringDeleter
	+{
	+ typedef HSTRING pointer;
	+ void operator()(pointer aString)
	+ {
	+ WindowsDeleteString(aString);
	+ }
	+};
	+
	+typedef mozilla::UniquePtr<HSTRING, HStringDeleter> HStringUniquePtr;
	+
	+NS_IMETHODIMP
	+WindowsUIUtils::ShareUrl(const nsAString& aUrlToShare,
	+ const nsAString& aShareTitle)
	+{
	+#ifndef __MINGW32__
	+ if (!IsWin10OrLater()) {
	+ return NS_OK;
	+ }
	+
	+ HStringUniquePtr title;
	+ HSTRING rawTitle;
	+ HSTRING url;
	+
	+ HRESULT hr = WindowsCreateString(PromiseFlatString(aShareTitle).get(), aShareTitle.Length(), &rawTitle);
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+ title.reset(rawTitle);
	+
	+ hr = WindowsCreateString(PromiseFlatString(aUrlToShare).get(), aUrlToShare.Length(), &url);
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+ ComPtr<IUriRuntimeClassFactory> uriFactory;
	+ hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_Foundation_Uri).Get(), &uriFactory);
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+ ComPtr<IUriRuntimeClass> uri;
	+ hr = uriFactory->CreateUri(url, &uri);
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+ HWND hwnd = GetForegroundWindow();
	+ ComPtr<IDataTransferManagerInterop> dtmInterop;
	+ ComPtr<IDataTransferManager> dtm;
	+ EventRegistrationToken dataRequestedToken;
	+
	+ hr = RoGetActivationFactory(HStringReference(
	+ RuntimeClass_Windows_ApplicationModel_DataTransfer_DataTransferManager)
	+ .Get(), IID_PPV_ARGS(&dtmInterop));
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+ hr = dtmInterop->GetForWindow(hwnd, IID_PPV_ARGS(&dtm));
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+ auto callback = Callback < ITypedEventHandler<DataTransferManager, DataRequestedEventArgs >> (
	+ [=](IDataTransferManager, IDataRequestedEventArgs pArgs) -> HRESULT
	+ {
	+ ComPtr<IDataRequest> spDataRequest;
	+ pArgs->get_Request(&spDataRequest);
	+ ComPtr<IDataPackage> spDataPackage;
	+ spDataRequest->get_Data(&spDataPackage);
	+ ComPtr<IDataPackagePropertySet> spDataPackageProperties;
	+ spDataPackage->get_Properties(&spDataPackageProperties);
	+
	+ spDataPackageProperties->put_Title(title.get());
	+ spDataPackage->SetUri(uri.Get());
	+
	+ return S_OK;
	+ });
	+
	+ hr = dtm->add_DataRequested(callback.Get(), &dataRequestedToken);
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+ hr = dtmInterop->ShowShareUIForWindow(hwnd);
	+ if (FAILED(hr)) {
	+ return NS_OK;
	+ }
	+
	+#endif
	+
	+ return NS_OK;
	+}
	--
	2.18.0.windows.1