From b5fbe0923cfc566036b83c3d968f225b26117efc Mon Sep 17 00:00:00 2001
From: Lorn Potter <lorn.potter@gmail.com>
Date: Tue, 7 May 2024 09:06:44 +1000
Subject: [PATCH] Wasm: fix QtVirtualKeyboard crash
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Do not try to access non the existent input element when there is no touchscreen,
as we do not use it in that instance.

Fixes: QTBUG-125120
Change-Id: Iedac1890d13b348ef12690947779347e3c2f8476
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Reviewed-by: Piotr Wierciński <piotr.wiercinski@qt.io>
(cherry picked from commit 41cb01dc595c8de374ce58ae43afbb69db70c379)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit f01a0e9ed90cd970d5b089648424ab4af1aed594)
---
 src/plugins/platforms/wasm/qwasmwindow.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/plugins/platforms/wasm/qwasmwindow.cpp b/src/plugins/platforms/wasm/qwasmwindow.cpp
index cda1faac8d9..19c73255d4d 100644
--- a/src/plugins/platforms/wasm/qwasmwindow.cpp
+++ b/src/plugins/platforms/wasm/qwasmwindow.cpp
@@ -128,9 +128,8 @@ QWasmWindow::QWasmWindow(QWindow *w, QWasmDeadKeySupport *deadKeySupport,
     });
 
    emscripten::val keyFocusWindow;
-    if (QWasmIntegration::get()->inputContext()) {
-        QWasmInputContext *wasmContext =
-            static_cast<QWasmInputContext *>(QWasmIntegration::get()->inputContext());
+    if (QWasmInputContext *wasmContext =
+       qobject_cast<QWasmInputContext *>(QWasmIntegration::get()->inputContext())) {
         // if there is an touchscreen input context,
         // use that window for key input
         keyFocusWindow = wasmContext->m_inputElement;