Issue 119 - Switch to injecting CSS for element hiding

src/plugin/WebBrowserEventsListener.h

Index: src/plugin/WebBrowserEventsListener.h
diff --git a/src/plugin/WebBrowserEventsListener.h b/src/plugin/WebBrowserEventsListener.h
new file mode 100644
index 0000000000000000000000000000000000000000..d162a1f828e5a1a4044bffcac3ed59681597fc9b
--- /dev/null
+++ b/src/plugin/WebBrowserEventsListener.h
@@ -0,0 +1,56 @@
+#pragma once
+#include <functional>
+#include <memory>
+
+class WebBrowserEventsListener;
+
+typedef ATL::IDispEventImpl <1, WebBrowserEventsListener,
+  &__uuidof(DWebBrowserEvents2), &LIBID_SHDocVw, 1, 1> WebBrowserEvents2Listener;
+
+typedef ATL::IDispEventImpl <2, WebBrowserEventsListener,
+  &__uuidof(HTMLDocumentEvents2), &LIBID_MSHTML, 4, 0> HTMLDocumentEvents2Listener;
+
+class ATL_NO_VTABLE WebBrowserEventsListener :
+  public ATL::CComObjectRootEx<ATL::CComSingleThreadModel>,
+  public WebBrowserEvents2Listener,
+  public HTMLDocumentEvents2Listener,
+  public IUnknown
+{
+  enum class State
+  {
+    FirstTimeLoading, Loading, Loaded
+  };
+public:
+  typedef std::function<void()> OnDestroy;
+  typedef std::function<void()> OnReloaded;
+
+  WebBrowserEventsListener();
+  ~WebBrowserEventsListener();
+  BEGIN_COM_MAP(WebBrowserEventsListener)
+    COM_INTERFACE_ENTRY(IUnknown)
+  END_COM_MAP()
+
+  DECLARE_NOT_AGGREGATABLE(WebBrowserEventsListener)
+  BEGIN_SINK_MAP(WebBrowserEventsListener)
+    SINK_ENTRY_EX(1, __uuidof(DWebBrowserEvents2), DISPID_DOCUMENTCOMPLETE, OnDocumentComplete)
+    SINK_ENTRY_EX(2, __uuidof(HTMLDocumentEvents2), DISPID_HTMLDOCUMENTEVENTS2_ONREADYSTATECHANGE, OnReadyStateChange)
+  END_SINK_MAP()
+
+  STDMETHOD(OnDocumentComplete)(IDispatch* pDisp, VARIANT* urlVariant);
+  STDMETHOD_(void, OnReadyStateChange)(IHTMLEventObj* pEvtObj);
+
+  DECLARE_PROTECT_FINAL_CONSTRUCT()
+
+  HRESULT FinalConstruct(){ return S_OK; }
+  void FinalRelease(){}
+  HRESULT Init(IWebBrowser2* webBrowser, const OnDestroy& onDestroy);
+
+  OnReloaded reloaded;
+private:
+  void emitReloaded();
+private:
+  ATL::CComPtr<IWebBrowser2> m_browser;
+  OnDestroy m_onDestroy;
+  bool m_isDocumentEvents2Connected;
+  State m_state;
+};