5 files changed, 29 insertions, 1 deletions
diff --git a/src/plugins/platforms/wasm/qwasmdrag.cpp b/src/plugins/platforms/wasm/qwasmdrag.cpp
index 1eed2acde53..ecd95f5e338 100644
--- a/src/plugins/platforms/wasm/qwasmdrag.cpp
+++ b/src/plugins/platforms/wasm/qwasmdrag.cpp
@@ -17,6 +17,7 @@
 #include <QFile>
 
 #include <private/qshapedpixmapdndwindow_p.h>
+#include <private/qdnd_p.h>
 
 #include <functional>
 #include <string>
@@ -198,10 +199,28 @@ void QWasmDrag::onNativeDragFinished(DragEvent *event)
     m_dragState->quitEventLoopClosure();
 }
 
+void QWasmDrag::onNativeDragEnter(DragEvent *event)
+{
+    event->webEvent.call<void>("preventDefault");
+
+    // Already dragging
+    if (QDragManager::self() && QDragManager::self()->object())
+        return;
+
+    // Event coming from external browser, start a drag
+    if (m_dragState)
+        m_dragState->dropAction = event->dropAction;
+
+    QDrag *drag = new QDrag(this);
+    drag->setMimeData(new QMimeData());
+    drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction);
+}
+
 void QWasmDrag::onNativeDragLeave(DragEvent *event)
 {
     event->webEvent.call<void>("preventDefault");
-    m_dragState->dropAction = event->dropAction;
+    if (m_dragState)
+        m_dragState->dropAction = event->dropAction;
     event->dataTransfer.setDropAction(Qt::DropAction::IgnoreAction);
 }
 
diff --git a/src/plugins/platforms/wasm/qwasmdrag.h b/src/plugins/platforms/wasm/qwasmdrag.h
index e821470c913..61df8155fa6 100644
--- a/src/plugins/platforms/wasm/qwasmdrag.h
+++ b/src/plugins/platforms/wasm/qwasmdrag.h
@@ -32,6 +32,7 @@ public:
     void onNativeDrop(DragEvent *event);
     void onNativeDragStarted(DragEvent *event);
     void onNativeDragFinished(DragEvent *event);
+    void onNativeDragEnter(DragEvent *event);
     void onNativeDragLeave(DragEvent *event);
 
     // QPlatformDrag:
diff --git a/src/plugins/platforms/wasm/qwasmevent.h b/src/plugins/platforms/wasm/qwasmevent.h
index ef1b6129e3c..07faee3fe4b 100644
--- a/src/plugins/platforms/wasm/qwasmevent.h
+++ b/src/plugins/platforms/wasm/qwasmevent.h
@@ -23,6 +23,7 @@ enum class EventType {
     DragEnd,
     DragOver,
     DragStart,
+    DragEnter,
     DragLeave,
     Drop,
     KeyDown,
diff --git a/src/plugins/platforms/wasm/qwasmwindow.cpp b/src/plugins/platforms/wasm/qwasmwindow.cpp
index 264471794bd..6e8bd46ca58 100644
--- a/src/plugins/platforms/wasm/qwasmwindow.cpp
+++ b/src/plugins/platforms/wasm/qwasmwindow.cpp
@@ -203,6 +203,12 @@ void QWasmWindow::registerEventHandlers()
             QWasmDrag::instance()->onNativeDragFinished(&dragEvent);
         }
     );
+    m_dragEnterCallback = QWasmEventHandler(m_window, "dragenter",
+        [this](emscripten::val event) {
+            DragEvent dragEvent(EventType::DragEnter, event, window());
+            QWasmDrag::instance()->onNativeDragEnter(&dragEvent);
+        }
+    );
     m_dragLeaveCallback = QWasmEventHandler(m_window, "dragleave",
         [this](emscripten::val event) {
             DragEvent dragEvent(EventType::DragLeave, event, window());
diff --git a/src/plugins/platforms/wasm/qwasmwindow.h b/src/plugins/platforms/wasm/qwasmwindow.h
index 87f4d6644c7..ca5c9132ca0 100644
--- a/src/plugins/platforms/wasm/qwasmwindow.h
+++ b/src/plugins/platforms/wasm/qwasmwindow.h
@@ -195,6 +195,7 @@ private:
     QWasmEventHandler m_dragStartCallback;
     QWasmEventHandler m_dragEndCallback;
     QWasmEventHandler m_dropCallback;
+    QWasmEventHandler m_dragEnterCallback;
     QWasmEventHandler m_dragLeaveCallback;
 
     QWasmEventHandler m_wheelEventCallback;