Cherry-pick 278161@main (a094954). https://bugs.webkit.org/show_bug.c…

…gi?id=273468

    [WPE] WPE Platform: Fix touch events propagation
    https://bugs.webkit.org/show_bug.cgi?id=273468

    Reviewed by Carlos Garcia Campos.

    This change makes it possible to store events with sequence id == 0
    in the HashMap thus allowing them to be propagated.
    This change also takes touch points of UP/CANCEL events into account
    so that those events are propagated correctly as well.

    * Source/WebKit/UIProcess/API/wpe/WPEWebView.cpp:
    (WKWPE::m_backend):
    * Source/WebKit/UIProcess/API/wpe/WPEWebView.h:

    Canonical link: https://commits.webkit.org/278161@main

Canonical link: https://commits.webkit.org/274313.201@webkitglib/2.44

Source/WebKit/UIProcess/API/wpe/WPEWebView.cpp

@@ -176,6 +176,7 @@ View::View(struct wpe_view_backend* backend, WPEDisplay* display, const API::Pag
             case WPE_EVENT_TOUCH_CANCEL: {
                 // FIXME: gestures
 #if ENABLE(TOUCH_EVENTS)
+                webView.m_touchEvents.set(wpe_event_touch_get_sequence_id(event), event);
                 auto points = webView.touchPointsForEvent(event);
                 webView.m_touchEvents.remove(wpe_event_touch_get_sequence_id(event));
                 webView.page().handleTouchEvent(NativeWebTouchEvent(event, WTFMove(points)));

Source/WebKit/UIProcess/API/wpe/WPEWebView.h

@@ -172,7 +172,7 @@ class View : public API::ObjectImpl<API::Object::Type::View> {
 #if ENABLE(TOUCH_EVENTS)
     std::unique_ptr<WebKit::TouchGestureController> m_touchGestureController;
 #if ENABLE(WPE_PLATFORM)
-    HashMap<uint32_t, GRefPtr<WPEEvent>> m_touchEvents;
+    HashMap<uint32_t, GRefPtr<WPEEvent>, IntHash<uint32_t>, WTF::UnsignedWithZeroKeyHashTraits<uint32_t>> m_touchEvents;
 #endif
 #endif
     std::unique_ptr<WebKit::PageClientImpl> m_pageClient;