WebContent: Plumb scroll-into-view requests from server to client

The WebContentView widget will now be able to react to scroll-into-view
requests from the WebContent process.

Demos/WebView/WebContentClient.cpp

@@ -90,3 +90,11 @@ void WebContentClient::handle(const Messages::WebContentClient::DidChangeTitle&
 #endif
     m_view.notify_server_did_change_title({}, message.title());
 }
+
+void WebContentClient::handle(const Messages::WebContentClient::DidRequestScrollIntoView& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidRequestScrollIntoView! rect=" << message.rect();
+#endif
+    m_view.notify_server_did_request_scroll_into_view({}, message.rect());
+}

Demos/WebView/WebContentClient.h

@@ -50,6 +50,7 @@ private:
     virtual void handle(const Messages::WebContentClient::DidChangeSelection&) override;
     virtual void handle(const Messages::WebContentClient::DidLayout&) override;
     virtual void handle(const Messages::WebContentClient::DidChangeTitle&) override;
+    virtual void handle(const Messages::WebContentClient::DidRequestScrollIntoView&) override;
 
     WebContentView& m_view;
 };

Demos/WebView/WebContentView.cpp

@@ -115,6 +115,11 @@ void WebContentView::notify_server_did_change_title(Badge<WebContentClient>, con
         on_title_change(title);
 }
 
+void WebContentView::notify_server_did_request_scroll_into_view(Badge<WebContentClient>, const Gfx::IntRect& rect)
+{
+    scroll_into_view(rect, true, true);
+}
+
 void WebContentView::did_scroll()
 {
     client().post_message(Messages::WebContentServer::SetViewportRect(visible_content_rect()));

Demos/WebView/WebContentView.h

@@ -46,6 +46,7 @@ public:
     void notify_server_did_invalidate_content_rect(Badge<WebContentClient>, const Gfx::IntRect&);
     void notify_server_did_change_selection(Badge<WebContentClient>);
     void notify_server_did_change_title(Badge<WebContentClient>, const String&);
+    void notify_server_did_request_scroll_into_view(Badge<WebContentClient>, const Gfx::IntRect&);
 
 private:
     WebContentView();

Services/WebContent/PageHost.cpp

@@ -129,4 +129,9 @@ void PageHost::page_did_change_title(const String& title)
     m_client.post_message(Messages::WebContentClient::DidChangeTitle(title));
 }
 
+void PageHost::page_did_request_scroll_into_view(const Gfx::IntRect& rect)
+{
+    m_client.post_message(Messages::WebContentClient::DidRequestScrollIntoView(rect));
+}
+
 }

Services/WebContent/PageHost.h

@@ -55,6 +55,7 @@ private:
     virtual void page_did_change_selection() override;
     virtual void page_did_layout() override;
     virtual void page_did_change_title(const String&) override;
+    virtual void page_did_request_scroll_into_view(const Gfx::IntRect&) override;
 
     explicit PageHost(ClientConnection&);
 

Services/WebContent/WebContentClient.ipc

@@ -6,4 +6,5 @@ endpoint WebContentClient = 90
     DidChangeSelection() =|
     DidLayout(Gfx::IntSize content_size) =|
     DidChangeTitle(String title) =|
+    DidRequestScrollIntoView(Gfx::IntRect rect) =|
 }