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LibWeb: Add internals.wheel() to simulate mouse wheel events

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This function allows us to write tests for scrolling scenarios where
the events are processed by the EventHandler.
This commit is contained in:
Aliaksandr Kalenik 2024-02-09 18:14:53 +01:00 • committed by Andreas Kling
parent e38ccebfc8
commit 40246adfb9
5 changed files with 48 additions and 0 deletions
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12
Tests/LibWeb/Ref/reference/scroll-using-mousewheel-event-ref.html Normal file
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@ -0,0 +1,12 @@
<!DOCTYPE html>
<style>
.item {
width: 100px;
height: 100px;
box-sizing: border-box;
border: 1px solid black;
}
</style>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>

28
Tests/LibWeb/Ref/scroll-using-mousewheel-event.html Normal file
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@ -0,0 +1,28 @@
<!DOCTYPE html>
<link rel="match" href="reference/scroll-using-mousewheel-event-ref.html" />
<style>
.scrollable {
overflow-y: scroll;
width: 100px;
height: 300px;
}
.item {
width: 100px;
height: 100px;
box-sizing: border-box;
border: 1px solid black;
}
</style>
<div class="scrollable">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>
<div class="item">5</div>
<div class="item">6</div>
<div class="item">7</div>
</div>
<script>
internals.wheel(10, 10, 0, 100);
</script>

6
Userland/Libraries/LibWeb/Internals/Internals.cpp
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@ -83,6 +83,12 @@ void Internals::click(double x, double y)
page.handle_mouseup({ x, y }, { x, y }, 1, 0, 0);
}
void Internals::wheel(double x, double y, double delta_x, double delta_y)
{
auto& page = global_object().browsing_context()->page();
page.handle_mousewheel({ x, y }, { x, y }, 0, 0, 0, delta_x, delta_y);
}
WebIDL::ExceptionOr<bool> Internals::dispatch_user_activated_event(DOM::EventTarget& target, DOM::Event& event)
{
event.set_is_trusted(true);

1
Userland/Libraries/LibWeb/Internals/Internals.h
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@ -26,6 +26,7 @@ public:
void commit_text();
void click(double x, double y);
void wheel(double x, double y, double delta_x, double delta_y);
WebIDL::ExceptionOr<bool> dispatch_user_activated_event(DOM::EventTarget&, DOM::Event& event);

1
Userland/Libraries/LibWeb/Internals/Internals.idl
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@ -11,6 +11,7 @@
undefined commitText();
undefined click(double x, double y);
undefined wheel(double x, double y, double deltaX, double deltaY);
boolean dispatchUserActivatedEvent(EventTarget target, Event event);