[wxWidgets.git] / src / msw / webview_ie.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/webview_ie.cpp
// Purpose:     wxMSW wxWebViewIE class implementation for web view component
// Author:      Marianne Gagnon
// Id:          $Id$
// Copyright:   (c) 2010 Marianne Gagnon, Steven Lamerton
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#if defined(__BORLANDC__)
    #pragma hdrstop
#endif

#include "wx/msw/webview_ie.h"

#if wxUSE_WEBVIEW_IE

#include <olectl.h>
#include <oleidl.h>
#include <exdispid.h>
#include <exdisp.h>
#include <mshtml.h>

// Various definitions are missing from mingw
#ifdef __MINGW32__
typedef enum CommandStateChangeConstants {
    CSC_UPDATECOMMANDS = (int) 0xFFFFFFFF,
    CSC_NAVIGATEFORWARD = 0x1,
    CSC_NAVIGATEBACK = 0x2
} CommandStateChangeConstants;

#define DISPID_COMMANDSTATECHANGE 105
#define DISPID_NAVIGATECOMPLETE2 252
#define DISPID_NAVIGATEERROR 271
#define DISPID_NEWWINDOW3 273
#define OLECMDID_OPTICAL_ZOOM 63
#define INET_E_ERROR_FIRST 0x800C0002L
#define INET_E_INVALID_URL 0x800C0002L
#define INET_E_NO_SESSION 0x800C0003L
#define INET_E_CANNOT_CONNECT 0x800C0004L
#define INET_E_RESOURCE_NOT_FOUND 0x800C0005L
#define INET_E_OBJECT_NOT_FOUND 0x800C0006L
#define INET_E_DATA_NOT_AVAILABLE 0x800C0007L
#define INET_E_DOWNLOAD_FAILURE 0x800C0008L
#define INET_E_AUTHENTICATION_REQUIRED 0x800C0009L
#define INET_E_NO_VALID_MEDIA 0x800C000AL
#define INET_E_CONNECTION_TIMEOUT 0x800C000BL
#define INET_E_INVALID_REQUEST 0x800C000CL
#define INET_E_UNKNOWN_PROTOCOL 0x800C000DL
#define INET_E_SECURITY_PROBLEM 0x800C000EL
#define INET_E_CANNOT_LOAD_DATA 0x800C000FL
#define INET_E_CANNOT_INSTANTIATE_OBJECT 0x800C0010L
#define INET_E_QUERYOPTION_UNKNOWN 0x800C0013L
#define INET_E_REDIRECT_FAILED 0x800C0014L
#define INET_E_REDIRECT_TO_DIR 0x800C0015L
#define INET_E_CANNOT_LOCK_REQUEST 0x800C0016L
#define INET_E_USE_EXTEND_BINDING 0x800C0017L
#define INET_E_TERMINATED_BIND 0x800C0018L
#define INET_E_INVALID_CERTIFICATE 0x800C0019L
#define INET_E_CODE_DOWNLOAD_DECLINED 0x800C0100L
#define INET_E_RESULT_DISPATCHED 0x800C0200L
#define INET_E_CANNOT_REPLACE_SFP_FILE 0x800C0300L
#define INET_E_CODE_INSTALL_BLOCKED_BY_HASH_POLICY 0x800C0500L
#define INET_E_CODE_INSTALL_SUPPRESSED 0x800C0400L

#define REFRESH_NORMAL 0
#define REFRESH_COMPLETELY 3
#endif

BEGIN_EVENT_TABLE(wxWebViewIE, wxControl)
    EVT_ACTIVEX(wxID_ANY, wxWebViewIE::onActiveXEvent)
    EVT_ERASE_BACKGROUND(wxWebViewIE::onEraseBg)
END_EVENT_TABLE()

bool wxWebViewIE::Create(wxWindow* parent,
           wxWindowID id,
           const wxString& url,
           const wxPoint& pos,
           const wxSize& size,
           long style,
           const wxString& name)
{
    if (!wxControl::Create(parent, id, pos, size, style,
                           wxDefaultValidator, name))
    {
        return false;
    }

    m_webBrowser = NULL;
    m_canNavigateBack = false;
    m_canNavigateForward = false;
    m_isBusy = false;
    m_historyLoadingFromList = false;
    m_historyEnabled = true;
    m_historyPosition = -1;

    if (::CoCreateInstance(CLSID_WebBrowser, NULL,
                           CLSCTX_INPROC_SERVER, // CLSCTX_INPROC,
                           IID_IWebBrowser2 , (void**)&m_webBrowser) != 0)
    {
        wxLogError("Failed to initialize IE, CoCreateInstance returned an error");
        return false;
    }

    m_ie.SetDispatchPtr(m_webBrowser); // wxAutomationObject will release itself

    m_webBrowser->put_RegisterAsBrowser(VARIANT_TRUE);
    m_webBrowser->put_RegisterAsDropTarget(VARIANT_TRUE);
    //m_webBrowser->put_Silent(VARIANT_FALSE);

    m_container = new wxActiveXContainer(this, IID_IWebBrowser2, m_webBrowser);

    SetBackgroundStyle(wxBG_STYLE_PAINT);
    SetDoubleBuffered(true);
    LoadUrl(url);
    return true;
}


void wxWebViewIE::LoadUrl(const wxString& url)
{
    m_ie.CallMethod("Navigate", (BSTR) url.wc_str(), NULL, NULL, NULL, NULL);
}

void wxWebViewIE::SetPage(const wxString& html, const wxString&)
{
    LoadUrl("about:blank");

    // Let the wx events generated for navigation events be processed, so
    // that the underlying IE component completes its Document object.
    // FIXME: calling wxYield is not elegant nor very reliable probably
    wxYield();

    // TODO: consider the "baseUrl" parameter if possible
    // TODO: consider encoding
    BSTR bstr = SysAllocString(html.wc_str());

    // Creates a new one-dimensional array
    SAFEARRAY *psaStrings = SafeArrayCreateVector(VT_VARIANT, 0, 1);
    if (psaStrings != NULL)
    {
        VARIANT *param;
        HRESULT hr = SafeArrayAccessData(psaStrings, (LPVOID*)&param);
        param->vt = VT_BSTR;
        param->bstrVal = bstr;

        hr = SafeArrayUnaccessData(psaStrings);
        IHTMLDocument2* document = GetDocument();
        document->write(psaStrings);

        // SafeArrayDestroy calls SysFreeString for each BSTR
        SafeArrayDestroy(psaStrings);
    }
    else
    {
        wxLogError("wxWebViewIE::SetPage() : psaStrings is NULL");
    }

}

wxString wxWebViewIE::GetPageSource()
{
    IHTMLDocument2* document = GetDocument();
    IHTMLElement *bodyTag = NULL;
    IHTMLElement *htmlTag = NULL;
    BSTR bstr;
    HRESULT hr = document->get_body(&bodyTag);
    if(SUCCEEDED(hr))
    {
        hr = bodyTag->get_parentElement(&htmlTag);
        if(SUCCEEDED(hr))
        {
            htmlTag->get_outerHTML(&bstr);
            htmlTag->Release();
        }
        bodyTag->Release();
    }

    document->Release();
    return wxString(bstr);
}

// FIXME? retrieve OLECMDID_GETZOOMRANGE instead of hardcoding range 0-4
wxWebViewZoom wxWebViewIE::GetZoom()
{
    const int zoom = GetIETextZoom();

    switch (zoom)
    {
        case 0:
            return wxWEB_VIEW_ZOOM_TINY;
            break;
        case 1:
            return wxWEB_VIEW_ZOOM_SMALL;
            break;
        case 2:
            return wxWEB_VIEW_ZOOM_MEDIUM;
            break;
        case 3:
            return wxWEB_VIEW_ZOOM_LARGE;
            break;
        case 4:
            return wxWEB_VIEW_ZOOM_LARGEST;
            break;
        default:
            wxASSERT(false);
            return wxWEB_VIEW_ZOOM_MEDIUM;
    }
}
void wxWebViewIE::SetZoom(wxWebViewZoom zoom)
{
    // I know I could cast from enum to int since wxWebViewZoom happens to
    // match with IE's zoom levels, but I don't like doing that, what if enum
    // values change...
    switch (zoom)
    {
        case wxWEB_VIEW_ZOOM_TINY:
            SetIETextZoom(0);
            break;
        case wxWEB_VIEW_ZOOM_SMALL:
            SetIETextZoom(1);
            break;
        case wxWEB_VIEW_ZOOM_MEDIUM:
            SetIETextZoom(2);
            break;
        case wxWEB_VIEW_ZOOM_LARGE:
            SetIETextZoom(3);
            break;
        case wxWEB_VIEW_ZOOM_LARGEST:
            SetIETextZoom(4);
            break;
        default:
            wxASSERT(false);
    }
}

void wxWebViewIE::SetIETextZoom(int level)
{
    VARIANT zoomVariant;
    VariantInit (&zoomVariant);
    V_VT(&zoomVariant) = VT_I4;
    V_I4(&zoomVariant) = level;

    HRESULT result = m_webBrowser->ExecWB(OLECMDID_ZOOM,
                                          OLECMDEXECOPT_DONTPROMPTUSER,
                                          &zoomVariant, NULL);
    wxASSERT (result == S_OK);

    VariantClear (&zoomVariant);
}

int wxWebViewIE::GetIETextZoom()
{
    VARIANT zoomVariant;
    VariantInit (&zoomVariant);
    V_VT(&zoomVariant) = VT_I4;
    V_I4(&zoomVariant) = 4;

    HRESULT result = m_webBrowser->ExecWB(OLECMDID_ZOOM,
                                          OLECMDEXECOPT_DONTPROMPTUSER,
                                          NULL, &zoomVariant);
    wxASSERT (result == S_OK);

    int zoom = V_I4(&zoomVariant);
    VariantClear (&zoomVariant);

    return zoom;
}

void wxWebViewIE::SetIEOpticalZoom(float zoom)
{
    // TODO: add support for optical zoom (IE7+ only)

    // TODO: get range from OLECMDID_OPTICAL_GETZOOMRANGE instead of hardcoding?
    wxASSERT(zoom >= 10.0f);
    wxASSERT(zoom <= 1000.0f);

    VARIANT zoomVariant;
    VariantInit (&zoomVariant);
    V_VT(&zoomVariant) = VT_I4;
    V_I4(&zoomVariant) = (zoom * 100.0f);

    HRESULT result = m_webBrowser->ExecWB((OLECMDID)OLECMDID_OPTICAL_ZOOM,
                                          OLECMDEXECOPT_DODEFAULT,
                                          &zoomVariant,
                                          NULL);
    wxASSERT (result == S_OK);
}

float wxWebViewIE::GetIEOpticalZoom()
{
    // TODO: add support for optical zoom (IE7+ only)

    VARIANT zoomVariant;
    VariantInit (&zoomVariant);
    V_VT(&zoomVariant) = VT_I4;
    V_I4(&zoomVariant) = -1;

    HRESULT result = m_webBrowser->ExecWB((OLECMDID)OLECMDID_OPTICAL_ZOOM,
                                          OLECMDEXECOPT_DODEFAULT, NULL,
                                          &zoomVariant);
    wxASSERT (result == S_OK);

    const int zoom = V_I4(&zoomVariant);
    VariantClear (&zoomVariant);

    return zoom / 100.0f;
}

void wxWebViewIE::SetZoomType(wxWebViewZoomType)
{
    // TODO: add support for optical zoom (IE7+ only)
    wxASSERT(false);
}

wxWebViewZoomType wxWebViewIE::GetZoomType() const
{
    // TODO: add support for optical zoom (IE7+ only)
    return wxWEB_VIEW_ZOOM_TYPE_TEXT;
}

bool wxWebViewIE::CanSetZoomType(wxWebViewZoomType) const
{
    // both are supported
    // TODO: IE6 only supports text zoom, check if it's IE6 first
    return true;
}

void wxWebViewIE::Print()
{
    m_webBrowser->ExecWB(OLECMDID_PRINTPREVIEW,
                         OLECMDEXECOPT_DODEFAULT, NULL, NULL);
}

bool wxWebViewIE::CanGoBack()
{
    if(m_historyEnabled)
        return m_historyPosition > 0;
    else
        return false;
}

bool wxWebViewIE::CanGoForward()
{
    if(m_historyEnabled)
        return m_historyPosition != static_cast<int>(m_historyList.size()) - 1;
    else
        return false;
}

void wxWebViewIE::LoadHistoryItem(wxSharedPtr<wxWebHistoryItem> item)
{
    int pos = -1;
    for(unsigned int i = 0; i < m_historyList.size(); i++)
    {
        //We compare the actual pointers to find the correct item
        if(m_historyList[i].get() == item.get())
            pos = i;
    }
    wxASSERT_MSG(pos != static_cast<int>(m_historyList.size()), 
                 "invalid history item");
    m_historyLoadingFromList = true;
    LoadUrl(item->GetUrl());
    m_historyPosition = pos;
}

wxVector<wxSharedPtr<wxWebHistoryItem> > wxWebViewIE::GetBackwardHistory()
{
    wxVector<wxSharedPtr<wxWebHistoryItem> > backhist;
    //As we don't have std::copy or an iterator constructor in the wxwidgets
    //native vector we construct it by hand
    for(int i = 0; i < m_historyPosition; i++)
    {
        backhist.push_back(m_historyList[i]);
    }
    return backhist;
}

wxVector<wxSharedPtr<wxWebHistoryItem> > wxWebViewIE::GetForwardHistory()
{
    wxVector<wxSharedPtr<wxWebHistoryItem> > forwardhist;
    //As we don't have std::copy or an iterator constructor in the wxwidgets
    //native vector we construct it by hand
    for(int i = m_historyPosition + 1; i < static_cast<int>(m_historyList.size()); i++)
    {
        forwardhist.push_back(m_historyList[i]);
    }
    return forwardhist;
}

void wxWebViewIE::GoBack()
{
    LoadHistoryItem(m_historyList[m_historyPosition - 1]);
}

void wxWebViewIE::GoForward()
{
    LoadHistoryItem(m_historyList[m_historyPosition + 1]);
}

void wxWebViewIE::Stop()
{
    m_ie.CallMethod("Stop");
}

void wxWebViewIE::ClearHistory()
{
    m_historyList.clear();
    m_historyPosition = -1;
}

void wxWebViewIE::EnableHistory(bool enable)
{
    m_historyEnabled = enable;
    m_historyList.clear();
    m_historyPosition = -1;
}

void wxWebViewIE::Reload(wxWebViewReloadFlags flags)
{
    VARIANTARG level;
    VariantInit(&level);
    V_VT(&level) = VT_I2;

    switch(flags)
    {
        case wxWEB_VIEW_RELOAD_DEFAULT:
            V_I2(&level) = REFRESH_NORMAL;
            break;
        case wxWEB_VIEW_RELOAD_NO_CACHE:
            V_I2(&level) = REFRESH_COMPLETELY;
            break;
        default:
            wxFAIL_MSG("Unexpected reload type");
    }

    m_webBrowser->Refresh2(&level);
}

bool wxWebViewIE::IsOfflineMode()
{
    wxVariant out = m_ie.GetProperty("Offline");

    wxASSERT(out.GetType() == "bool");

    return out.GetBool();
}

void wxWebViewIE::SetOfflineMode(bool offline)
{
    // FIXME: the wxWidgets docs do not really document what the return
    //        parameter of PutProperty is
    const bool success = m_ie.PutProperty("Offline", (offline ?
                                                      VARIANT_TRUE :
                                                      VARIANT_FALSE));
    wxASSERT(success);
}

bool wxWebViewIE::IsBusy()
{
    if (m_isBusy) return true;

    wxVariant out = m_ie.GetProperty("Busy");

    wxASSERT(out.GetType() == "bool");

    return out.GetBool();
}

wxString wxWebViewIE::GetCurrentURL()
{
    wxVariant out = m_ie.GetProperty("LocationURL");

    wxASSERT(out.GetType() == "string");
    return out.GetString();
}

wxString wxWebViewIE::GetCurrentTitle()
{
    IHTMLDocument2* document = GetDocument();
    BSTR title;

    document->get_nameProp(&title);
    document->Release();
    return wxString(title);
}

bool wxWebViewIE::CanCut()
{
    return CanExecCommand("Cut");
}

bool wxWebViewIE::CanCopy()
{
    return CanExecCommand("Copy");
}
bool wxWebViewIE::CanPaste()
{
    return CanExecCommand("Paste");
}

void wxWebViewIE::Cut()
{
    ExecCommand("Cut");
}

void wxWebViewIE::Copy()
{
    ExecCommand("Copy");
}

void wxWebViewIE::Paste()
{
    ExecCommand("Paste");
}

bool wxWebViewIE::CanUndo()
{
    return CanExecCommand("Undo");
}
bool wxWebViewIE::CanRedo()
{
    return CanExecCommand("Redo");
}

void wxWebViewIE::Undo()
{
    ExecCommand("Undo");
}

void wxWebViewIE::Redo()
{
    ExecCommand("Redo");
}

void wxWebViewIE::SetEditable(bool enable)
{
    IHTMLDocument2* document = GetDocument();
    if( enable )
        document->put_designMode(SysAllocString(L"On"));
    else
        document->put_designMode(SysAllocString(L"Off"));

    document->Release();
}

bool wxWebViewIE::IsEditable()
{
    IHTMLDocument2* document = GetDocument();
    BSTR mode;
    document->get_designMode(&mode);
    if(wxString(mode) == "On")
        return true;
    else
        return false;

    document->Release();
}

void wxWebViewIE::SelectAll()
{
    ExecCommand("SelectAll");
}

bool wxWebViewIE::HasSelection()
{
    IHTMLDocument2* document = GetDocument();
    IHTMLSelectionObject* selection;
    BSTR type;
    HRESULT hr = document->get_selection(&selection);
    if(SUCCEEDED(hr))
    {
        selection->get_type(&type);
        selection->Release();
    }
    document->Release();
    return wxString(type) != "None";
}

void wxWebViewIE::DeleteSelection()
{
    ExecCommand("Delete");
}

wxString wxWebViewIE::GetSelectedText()
{
    IHTMLDocument2* document = GetDocument();
    IHTMLSelectionObject* selection;
    wxString selected;
    HRESULT hr = document->get_selection(&selection);
    if(SUCCEEDED(hr))
    {
        IDispatch* disrange;
        hr = selection->createRange(&disrange);
        if(SUCCEEDED(hr))
        {
            IHTMLTxtRange* range;
            hr = disrange->QueryInterface(IID_IHTMLTxtRange, (void**)&range);
            if(SUCCEEDED(hr))
            {
                BSTR text;
                range->get_text(&text);
                selected = wxString(text);
                range->Release();
            }
            disrange->Release();
        }
        selection->Release();
    }
    document->Release();
    return selected;
}

bool wxWebViewIE::CanExecCommand(wxString command)
{
    IHTMLDocument2* document = GetDocument();
    VARIANT_BOOL enabled;

    document->queryCommandEnabled(SysAllocString(command.wc_str()), &enabled);
    document->Release();

    return (enabled == VARIANT_TRUE);
}

void wxWebViewIE::ExecCommand(wxString command)
{
    IHTMLDocument2* document = GetDocument();
    document->execCommand(SysAllocString(command.wc_str()), VARIANT_FALSE, VARIANT(), NULL);
    document->Release();
}

IHTMLDocument2* wxWebViewIE::GetDocument()
{
    wxVariant variant = m_ie.GetProperty("Document");
    IHTMLDocument2* document = (IHTMLDocument2*)variant.GetVoidPtr();

    wxASSERT(document);

    return document;
}

void wxWebViewIE::onActiveXEvent(wxActiveXEvent& evt)
{
    if (m_webBrowser == NULL) return;

    switch (evt.GetDispatchId())
    {
        case DISPID_BEFORENAVIGATE2:
        {
            m_isBusy = true;

            wxString url = evt[1].GetString();
            wxString target = evt[3].GetString();

            wxWebNavigationEvent event(wxEVT_COMMAND_WEB_VIEW_NAVIGATING,
                                       GetId(), url, target, true);
            event.SetEventObject(this);
            HandleWindowEvent(event);

            if (event.IsVetoed())
            {
                wxActiveXEventNativeMSW* nativeParams =
                    evt.GetNativeParameters();
                *V_BOOLREF(&nativeParams->pDispParams->rgvarg[0]) = VARIANT_TRUE;
            }

            // at this point, either the navigation event has been cancelled
            // and we're not busy, either it was accepted and IWebBrowser2's
            // Busy property will be true; so we don't need our override
            // flag anymore.
            m_isBusy = false;

            break;
        }

        case DISPID_NAVIGATECOMPLETE2:
        {
            wxString url = evt[1].GetString();
            // TODO: set target parameter if possible
            wxString target = wxEmptyString;
            wxWebNavigationEvent event(wxEVT_COMMAND_WEB_VIEW_NAVIGATED,
                                       GetId(), url, target, false);
            event.SetEventObject(this);
            HandleWindowEvent(event);
            break;
        }

        case DISPID_PROGRESSCHANGE:
        {
            // download progress
            break;
        }

        case DISPID_DOCUMENTCOMPLETE:
        {
            //Only send a complete even if we are actually finished, this brings
            //the event in to line with webkit
            READYSTATE rs;
            m_webBrowser->get_ReadyState( &rs );
            if(rs != READYSTATE_COMPLETE)
                break;

            wxString url = evt[1].GetString();

            //As we are complete we also add to the history list, but not if the
            //page is not the main page, ie it is a subframe
            if(m_historyEnabled && !m_historyLoadingFromList && url == GetCurrentURL())
            {
                //If we are not at the end of the list, then erase everything
                //between us and the end before adding the new page
                if(m_historyPosition != static_cast<int>(m_historyList.size()) - 1)
                {
                    m_historyList.erase(m_historyList.begin() + m_historyPosition + 1,
                                        m_historyList.end());
                }
                wxSharedPtr<wxWebHistoryItem> item(new wxWebHistoryItem(url, GetCurrentTitle()));
                m_historyList.push_back(item);
                m_historyPosition++;
            }
            //Reset as we are done now
            m_historyLoadingFromList = false;
            // TODO: set target parameter if possible
            wxString target = wxEmptyString;
            wxWebNavigationEvent event(wxEVT_COMMAND_WEB_VIEW_LOADED, GetId(),
                                       url, target, false);
            event.SetEventObject(this);
            HandleWindowEvent(event);
            break;
        }

        case DISPID_STATUSTEXTCHANGE:
        {
            break;
        }

        case DISPID_TITLECHANGE:
        {
            break;
        }

        case DISPID_NAVIGATEERROR:
        {
            wxWebNavigationError errorType = wxWEB_NAV_ERR_OTHER;
            wxString errorCode = "?";
            switch (evt[3].GetLong())
            {
            case INET_E_INVALID_URL: // (0x800C0002L or -2146697214)
                errorCode = "INET_E_INVALID_URL";
                errorType = wxWEB_NAV_ERR_REQUEST;
                break;
            case INET_E_NO_SESSION: // (0x800C0003L or -2146697213)
                errorCode = "INET_E_NO_SESSION";
                errorType = wxWEB_NAV_ERR_CONNECTION;
                break;
            case INET_E_CANNOT_CONNECT: // (0x800C0004L or -2146697212)
                errorCode = "INET_E_CANNOT_CONNECT";
                errorType = wxWEB_NAV_ERR_CONNECTION;
                break;
            case INET_E_RESOURCE_NOT_FOUND: // (0x800C0005L or -2146697211)
                errorCode = "INET_E_RESOURCE_NOT_FOUND";
                errorType = wxWEB_NAV_ERR_NOT_FOUND;
                break;
            case INET_E_OBJECT_NOT_FOUND: // (0x800C0006L or -2146697210)
                errorCode = "INET_E_OBJECT_NOT_FOUND";
                errorType = wxWEB_NAV_ERR_NOT_FOUND;
                break;
            case INET_E_DATA_NOT_AVAILABLE: // (0x800C0007L or -2146697209)
                errorCode = "INET_E_DATA_NOT_AVAILABLE";
                errorType = wxWEB_NAV_ERR_NOT_FOUND;
                break;
            case INET_E_DOWNLOAD_FAILURE: // (0x800C0008L or -2146697208)
                errorCode = "INET_E_DOWNLOAD_FAILURE";
                errorType = wxWEB_NAV_ERR_CONNECTION;
                break;
            case INET_E_AUTHENTICATION_REQUIRED: // (0x800C0009L or -2146697207)
                errorCode = "INET_E_AUTHENTICATION_REQUIRED";
                errorType = wxWEB_NAV_ERR_AUTH;
                break;
            case INET_E_NO_VALID_MEDIA: // (0x800C000AL or -2146697206)
                errorCode = "INET_E_NO_VALID_MEDIA";
                errorType = wxWEB_NAV_ERR_REQUEST;
                break;
            case INET_E_CONNECTION_TIMEOUT: // (0x800C000BL or -2146697205)
                errorCode = "INET_E_CONNECTION_TIMEOUT";
                errorType = wxWEB_NAV_ERR_CONNECTION;
                break;
            case INET_E_INVALID_REQUEST: // (0x800C000CL or -2146697204)
                errorCode = "INET_E_INVALID_REQUEST";
                errorType = wxWEB_NAV_ERR_REQUEST;
                break;
            case INET_E_UNKNOWN_PROTOCOL: // (0x800C000DL or -2146697203)
                errorCode = "INET_E_UNKNOWN_PROTOCOL";
                errorType = wxWEB_NAV_ERR_REQUEST;
                break;
            case INET_E_SECURITY_PROBLEM: // (0x800C000EL or -2146697202)
                errorCode = "INET_E_SECURITY_PROBLEM";
                errorType = wxWEB_NAV_ERR_SECURITY;
                break;
            case INET_E_CANNOT_LOAD_DATA: // (0x800C000FL or -2146697201)
                errorCode = "INET_E_CANNOT_LOAD_DATA";
                errorType = wxWEB_NAV_ERR_OTHER;
                break;
            case INET_E_CANNOT_INSTANTIATE_OBJECT:
                // CoCreateInstance will return an error code if this happens,
                // we'll handle this above.
                return;
                break;
            case INET_E_REDIRECT_FAILED: // (0x800C0014L or -2146697196)
                errorCode = "INET_E_REDIRECT_FAILED";
                errorType = wxWEB_NAV_ERR_OTHER;
                break;
            case INET_E_REDIRECT_TO_DIR: // (0x800C0015L or -2146697195)
                errorCode = "INET_E_REDIRECT_TO_DIR";
                errorType = wxWEB_NAV_ERR_REQUEST;
                break;
            case INET_E_CANNOT_LOCK_REQUEST: // (0x800C0016L or -2146697194)
                errorCode = "INET_E_CANNOT_LOCK_REQUEST";
                errorType = wxWEB_NAV_ERR_OTHER;
                break;
            case INET_E_USE_EXTEND_BINDING: // (0x800C0017L or -2146697193)
                errorCode = "INET_E_USE_EXTEND_BINDING";
                errorType = wxWEB_NAV_ERR_OTHER;
                break;
            case INET_E_TERMINATED_BIND: // (0x800C0018L or -2146697192)
                errorCode = "INET_E_TERMINATED_BIND";
                errorType = wxWEB_NAV_ERR_OTHER;
                break;
            case INET_E_INVALID_CERTIFICATE: // (0x800C0019L or -2146697191)
                errorCode = "INET_E_INVALID_CERTIFICATE";
                errorType = wxWEB_NAV_ERR_CERTIFICATE;
                break;
            case INET_E_CODE_DOWNLOAD_DECLINED: // (0x800C0100L or -2146696960)
                errorCode = "INET_E_CODE_DOWNLOAD_DECLINED";
                errorType = wxWEB_NAV_ERR_USER_CANCELLED;
                break;
            case INET_E_RESULT_DISPATCHED: // (0x800C0200L or -2146696704)
                // cancel request cancelled...
                errorCode = "INET_E_RESULT_DISPATCHED";
                errorType = wxWEB_NAV_ERR_OTHER;
                break;
            case INET_E_CANNOT_REPLACE_SFP_FILE: // (0x800C0300L or -2146696448)
                errorCode = "INET_E_CANNOT_REPLACE_SFP_FILE";
                errorType = wxWEB_NAV_ERR_SECURITY;
                break;
            case INET_E_CODE_INSTALL_BLOCKED_BY_HASH_POLICY:
                errorCode = "INET_E_CODE_INSTALL_BLOCKED_BY_HASH_POLICY";
                errorType = wxWEB_NAV_ERR_SECURITY;
                break;
            case INET_E_CODE_INSTALL_SUPPRESSED:
                errorCode = "INET_E_CODE_INSTALL_SUPPRESSED";
                errorType = wxWEB_NAV_ERR_SECURITY;
                break;
            }

            wxString url = evt[1].GetString();
            wxString target = evt[2].GetString();
            wxWebNavigationEvent event(wxEVT_COMMAND_WEB_VIEW_ERROR, GetId(),
                                       url, target, false);
            event.SetEventObject(this);
            event.SetInt(errorType);
            event.SetString(errorCode);
            HandleWindowEvent(event);
            break;
        }

        case DISPID_COMMANDSTATECHANGE:
        {
            long commandId = evt[0].GetLong();
            bool enable = evt[1].GetBool();
            if (commandId == CSC_NAVIGATEBACK)
            {
                m_canNavigateBack = enable;
            }
            else if (commandId == CSC_NAVIGATEFORWARD)
            {
                m_canNavigateForward = enable;
            }
            break;
        }
        case DISPID_NEWWINDOW3:
        {
            wxString url = evt[4].GetString();

            wxWebNavigationEvent event(wxEVT_COMMAND_WEB_VIEW_NEWWINDOW,
                                       GetId(), url, wxEmptyString, true);
            event.SetEventObject(this);
            HandleWindowEvent(event);

            //If we veto the event then we cancel the new window
            if (event.IsVetoed())
            {
                wxActiveXEventNativeMSW* nativeParams = evt.GetNativeParameters();
                *V_BOOLREF(&nativeParams->pDispParams->rgvarg[3]) = VARIANT_TRUE;
            }
            break;
        }
    }

    evt.Skip();
}

#endif