Issue 119 - Switch to injecting CSS for element hiding

src/plugin/PluginClass.cpp

Index: src/plugin/PluginClass.cpp
diff --git a/src/plugin/PluginClass.cpp b/src/plugin/PluginClass.cpp
index ce420abead3832878a8a592885e13c906897bdad..b23f54dfa7abc2a2c18b68ee4c408e19f9524143 100644
--- a/src/plugin/PluginClass.cpp
+++ b/src/plugin/PluginClass.cpp
@@ -32,6 +32,7 @@
 #include "../shared/Version.h"
 #include <thread>
 #include <array>
+#include "WebBrowserEventsListener.h"
 
 #ifdef DEBUG_HIDE_EL
 DWORD profileTime = 0;
@@ -91,6 +92,7 @@ namespace AdblockPlus
 }
 
 CPluginClass::CPluginClass()
+  : m_data(std::make_shared<Data>())
 {
   //Use this line to debug memory leaks
   //	_CrtDumpMemoryLeaks();
@@ -105,17 +107,14 @@ CPluginClass::CPluginClass()
   m_isInitializedOk = false;
 
 
-  m_tab = new CPluginTab(this);
-
+  m_data->tab.reset(new CPluginTab(this));
   Dictionary::Create(GetBrowserLanguage());
 }
 
 CPluginClass::~CPluginClass()
 {
-  delete m_tab;
 }
 
-
 /////////////////////////////////////////////////////////////////////////////
 // Initialization
 
@@ -128,7 +127,7 @@ void CPluginClass::FinalRelease()
 {
   s_criticalSectionBrowser.Lock();
   {
-    m_webBrowser2.Release();
+    m_data.reset();
   }
   s_criticalSectionBrowser.Unlock();
 }
@@ -157,7 +156,7 @@ CComQIPtr<IWebBrowser2> CPluginClass::GetBrowser() const
 
   s_criticalSectionBrowser.Lock();
   {
-    browser = m_webBrowser2;
+    browser = m_data->webBrowser2;
   }
   s_criticalSectionBrowser.Unlock();
 
@@ -193,7 +192,7 @@ std::wstring CPluginClass::GetBrowserUrl() const
   }
   else
   {
-    url = m_tab->GetDocumentUrl();
+    url = m_data->tab->GetDocumentUrl();
   }
   return url;
 }
@@ -237,7 +236,7 @@ STDMETHODIMP CPluginClass::SetSite(IUnknown* unknownSite)
 
       s_criticalSectionBrowser.Lock();
       {
-        m_webBrowser2 = unknownSite;
+        m_data->webBrowser2 = ATL::CComQIPtr<IWebBrowser2>(unknownSite);
       }
       s_criticalSectionBrowser.Unlock();
 
@@ -332,7 +331,7 @@ STDMETHODIMP CPluginClass::SetSite(IUnknown* unknownSite)
       // Release browser interface
       s_criticalSectionBrowser.Lock();
       {
-        m_webBrowser2.Release();
+        m_data->webBrowser2.Release();
       }
       s_criticalSectionBrowser.Unlock();
 
@@ -485,6 +484,7 @@ void STDMETHODCALLTYPE CPluginClass::OnBeforeNavigate2(
     }
     std::wstring url(urlVariant->bstrVal, SysStringLen(urlVariant->bstrVal));
     UnescapeUrl(url);
+    EnsureWebBrowserConnected(webBrowser);
 
     // If webbrowser2 is equal to top level browser (as set in SetSite), we are
     // navigating new page
@@ -494,7 +494,7 @@ void STDMETHODCALLTYPE CPluginClass::OnBeforeNavigate2(
     }
     else if (GetBrowser().IsEqualObject(webBrowser))
     {
-      m_tab->OnNavigate(url);
+      m_data->tab->OnNavigate(url);
       DEBUG_GENERAL(
       L"================================================================================\n"
       L"Begin main navigation url:" + url + L"\n"
@@ -508,7 +508,7 @@ void STDMETHODCALLTYPE CPluginClass::OnBeforeNavigate2(
     else
     {
       DEBUG_NAVI(L"Navi::Begin navigation url:" + url)
-      m_tab->CacheFrame(url);
+      m_data->tab->CacheFrame(url);
     }
   }
   catch (...)
@@ -525,29 +525,8 @@ void STDMETHODCALLTYPE CPluginClass::OnDownloadComplete()
     ATL::CComPtr<IWebBrowser2> browser = GetBrowser();
     if (browser)
     {
-      m_tab->OnDownloadComplete(browser);
-    }
-  }
-  catch (...)
-  {
-  }
-}
-
-// Entry point
-void STDMETHODCALLTYPE CPluginClass::OnDocumentComplete(IDispatch* frameBrowserDisp, VARIANT* /*urlOrPidl*/)
-{
-  try
-  {
-    DEBUG_NAVI(L"Navi::Document Complete");
-    ATL::CComQIPtr<IWebBrowser2> webBrowser2 = frameBrowserDisp;
-    if (!webBrowser2)
-    {
-      return;
+      m_data->tab->OnDownloadComplete(browser);
     }
-    std::wstring frameSrc = GetLocationUrl(*webBrowser2);
-    UnescapeUrl(frameSrc);
-    bool isRootPageBrowser = GetBrowser().IsEqualObject(webBrowser2);
-    m_tab->OnDocumentComplete(webBrowser2, frameSrc, isRootPageBrowser);
   }
   catch (...)
   {
@@ -987,7 +966,7 @@ CPluginClass* CPluginClass::FindInstance(HWND hStatusBarWnd)
 
 CPluginTab* CPluginClass::GetTab()
 {
-  return m_tab;
+  return m_data->tab.get();
 }
 
 CPluginTab* CPluginClass::GetTab(DWORD dwThreadId)
@@ -999,7 +978,7 @@ CPluginTab* CPluginClass::GetTab(DWORD dwThreadId)
     std::map<DWORD,CPluginClass*>::const_iterator it = s_threadInstances.find(dwThreadId);
     if (it != s_threadInstances.end())
     {
-      tab = it->second->m_tab;
+      tab = it->second->m_data->tab.get();
     }
   }
   s_criticalSectionLocal.Unlock();
@@ -1227,7 +1206,7 @@ STDMETHODIMP CPluginClass::Exec(const GUID*, DWORD nCmdID, DWORD, VARIANTARG*, V
   }
 
   // Create menu
-  HMENU hMenu = CreatePluginMenu(m_tab->GetDocumentUrl());
+  HMENU hMenu = CreatePluginMenu(m_data->tab->GetDocumentUrl());
   if (!hMenu)
   {
     return E_FAIL;
@@ -1625,7 +1604,6 @@ void CPluginClass::UpdateStatusBar()
   }
 }
 
-
 void CPluginClass::Unadvise()
 {
   s_criticalSectionLocal.Lock();
@@ -1643,6 +1621,43 @@ void CPluginClass::Unadvise()
   s_criticalSectionLocal.Unlock();
 }
 
+void CPluginClass::EnsureWebBrowserConnected(const ATL::CComPtr<IWebBrowser2>& webBrowser)
+{
+  auto it = m_data->connectedWebBrowsersCache.find(webBrowser);
+  if (it != m_data->connectedWebBrowsersCache.end())
+  {
+    return;
+  }
+  ATL::CComObject<WebBrowserEventsListener>* listenerImpl = nullptr;
+  if (FAILED(ATL::CComObject<WebBrowserEventsListener>::CreateInstance(&listenerImpl)))
+  {
+    return;
+  }
+  ATL::CComPtr<IUnknown> listenerRefCounterGuard(listenerImpl->GetUnknown());
+  std::weak_ptr<Data> dataForCapturing = m_data;
+  auto onListenerDestroy = [webBrowser, dataForCapturing]
+  {
+    if (auto data = dataForCapturing.lock())
+    {
+      data->connectedWebBrowsersCache.erase(webBrowser);
+    }
+  };
+  auto onReloaded = [webBrowser, dataForCapturing]
+  {
+    if (auto data = dataForCapturing.lock())
+    {
+      auto frameSrc = GetLocationUrl(*webBrowser);
+      UnescapeUrl(frameSrc);
+      data->tab->OnDocumentComplete(webBrowser, frameSrc, data->webBrowser2.IsEqualObject(webBrowser));
+    }
+  };
+  if (FAILED(listenerImpl->Init(webBrowser, onListenerDestroy, onReloaded)))
+  {
+    return;
+  }
+  m_data->connectedWebBrowsersCache.emplace(webBrowser, listenerImpl);
+}
+
 HICON CPluginClass::GetIcon(int type)
 {
   HICON icon = NULL;