LibWeb: Parse <script> elements and run any JavaScript found inside

This patch begins integrating LibJS into LibWeb. Document holds the
JS::Interpreter for now, and it is created on demand when you first
call Document::interpreter().

We also add a simple "alert()" function to the global object.

1 files changed, 5 insertions, 0 deletions

diff --git a/Libraries/LibWeb/DOM/Document.h b/Libraries/LibWeb/DOM/Document.h
index aa7d3e2014..bdfe6e6cb9 100644
--- a/Libraries/LibWeb/DOM/Document.h
+++ b/Libraries/LibWeb/DOM/Document.h
@@ -33,6 +33,7 @@
 #include <AK/URL.h>
 #include <AK/WeakPtr.h>
 #include <LibCore/Forward.h>
+#include <LibJS/Forward.h>
 #include <LibWeb/CSS/StyleResolver.h>
 #include <LibWeb/CSS/StyleSheet.h>
 #include <LibWeb/DOM/ParentNode.h>
@@ -120,6 +121,8 @@ public:
     const String& source() const { return m_source; }
     void set_source(const String& source) { m_source = source; }
 
+    JS::Interpreter& interpreter();
+
 private:
     virtual RefPtr<LayoutNode> create_layout_node(const StyleProperties* parent_style) const override;
 
@@ -139,6 +142,8 @@ private:
     RefPtr<Core::Timer> m_style_update_timer;
 
     String m_source;
+
+    OwnPtr<JS::Interpreter> m_interpreter;
 };
 
 template<>