From 40a355a42d4a9444dc753c04c6608dade2f06a23 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 03:13:27 +0200
Subject: Adding upstream version 125.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/base/nsCopySupport.cpp | 42 ++++++++++++++++++++++++++++++++++++++----
 1 file changed, 38 insertions(+), 4 deletions(-)

(limited to 'dom/base/nsCopySupport.cpp')

diff --git a/dom/base/nsCopySupport.cpp b/dom/base/nsCopySupport.cpp
index 4dc183d664..15c0cf4cf0 100644
--- a/dom/base/nsCopySupport.cpp
+++ b/dom/base/nsCopySupport.cpp
@@ -5,6 +5,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsCopySupport.h"
+#include "nsGlobalWindowInner.h"
 #include "nsIDocumentEncoder.h"
 #include "nsISupports.h"
 #include "nsIContent.h"
@@ -38,7 +39,6 @@
 #include "nsIImageLoadingContent.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsContentUtils.h"
-#include "nsContentCID.h"
 
 #ifdef XP_WIN
 #  include "mozilla/StaticPrefs_clipboard.h"
@@ -714,6 +714,33 @@ static Element* GetElementOrNearestFlattenedTreeParentElement(nsINode* aNode) {
   return nullptr;
 }
 
+/**
+ * This class is used while processing clipboard paste event.
+ */
+class MOZ_RAII AutoHandlingPasteEvent final {
+ public:
+  explicit AutoHandlingPasteEvent(nsGlobalWindowInner* aWindow,
+                                  DataTransfer* aDataTransfer,
+                                  const EventMessage& aEventMessage,
+                                  const int32_t& aClipboardType) {
+    MOZ_ASSERT(aDataTransfer);
+    if (aWindow && aEventMessage == ePaste &&
+        aClipboardType == nsIClipboard::kGlobalClipboard) {
+      aWindow->SetCurrentPasteDataTransfer(aDataTransfer);
+      mInnerWindow = aWindow;
+    }
+  }
+
+  ~AutoHandlingPasteEvent() {
+    if (mInnerWindow) {
+      mInnerWindow->SetCurrentPasteDataTransfer(nullptr);
+    }
+  }
+
+ private:
+  RefPtr<nsGlobalWindowInner> mInnerWindow;
+};
+
 bool nsCopySupport::FireClipboardEvent(EventMessage aEventMessage,
                                        int32_t aClipboardType,
                                        PresShell* aPresShell,
@@ -791,9 +818,16 @@ bool nsCopySupport::FireClipboardEvent(EventMessage aEventMessage,
     InternalClipboardEvent evt(true, originalEventMessage);
     evt.mClipboardData = clipboardData;
 
-    RefPtr<nsPresContext> presContext = presShell->GetPresContext();
-    EventDispatcher::Dispatch(targetElement, presContext, &evt, nullptr,
-                              &status);
+    {
+      AutoHandlingPasteEvent autoHandlingPasteEvent(
+          nsGlobalWindowInner::Cast(doc->GetInnerWindow()), clipboardData,
+          aEventMessage, aClipboardType);
+
+      RefPtr<nsPresContext> presContext = presShell->GetPresContext();
+      EventDispatcher::Dispatch(targetElement, presContext, &evt, nullptr,
+                                &status);
+    }
+
     // If the event was cancelled, don't do the clipboard operation
     doDefault = (status != nsEventStatus_eConsumeNoDefault);
   }
-- 
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