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LibWeb: Start working on DOM event support

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This patch adds the EventTarget class and makes Node inherit from it.

You can register event listeners on an EventTarget, and when you call
dispatch_event() on it, the event listeners will get invoked.

An event listener is basically a wrapper around a JS::Function*.

This is pretty far from how DOM events should eventually work, but it's
a place to start and we'll build more on top of this. :^)
This commit is contained in:
Andreas Kling 2020-03-18 15:22:31 +01:00
commit f39e5352f0
Notes: sideshowbarker 2024-07-19 08:15:29 +09:00
17 changed files with 310 additions and 11 deletions
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10
Libraries/LibWeb/DOM/Node.h
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@ -31,6 +31,7 @@
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/TreeNode.h>
namespace Web {
@ -56,10 +57,19 @@ class StyleProperties;
class Node
: public TreeNode<Node>
, public EventTarget
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::NodeWrapper;
using TreeNode<Node>::ref;
using TreeNode<Node>::unref;
// ^EventTarget
virtual void ref_event_target() final { ref(); }
virtual void unref_event_target() final { unref(); }
virtual void dispatch_event(String event_name) final;
virtual ~Node();
NodeType type() const { return m_type; }