Method HandleTabMessageReceived

BrowserWindow.cpp:701–809

}

HRESULT BrowserWindow::HandleTabMessageReceived(size_t tabId, ICoreWebView2* webview, ICoreWebView2WebMessageReceivedEventArgs* eventArgs)
{
    wil::unique_cotaskmem_string jsonString;
    RETURN_IF_FAILED(eventArgs->get_WebMessageAsJson(&jsonString));
    web::json::value jsonObj = web::json::value::parse(jsonString.get());

    wil::unique_cotaskmem_string uri;
    RETURN_IF_FAILED(webview->get_Source(&uri));

    int message = jsonObj.at(L"message").as_integer();
    web::json::value args = jsonObj.at(L"args");

    wil::unique_cotaskmem_string source;
    RETURN_IF_FAILED(webview->get_Source(&source));

    switch (message)
    {
    case MG_GET_FAVORITES:
    case MG_REMOVE_FAVORITE:
    {
        std::wstring fileURI = GetFilePathAsURI(GetFullPathFor(L"wvbrowser_ui\\content_ui\\favorites.html"));
        // Only the favorites UI can request favorites
        if (fileURI.compare(source.get()) == 0)
        {
            jsonObj[L"args"][L"tabId"] = web::json::value::number(tabId);
            CheckFailure(PostJsonToWebView(jsonObj, m_controlsWebView.Get()), L"Couldn't perform favorites operation.");
        }
    }
    break;
    case MG_GET_SETTINGS:
    {
        std::wstring fileURI = GetFilePathAsURI(GetFullPathFor(L"wvbrowser_ui\\content_ui\\settings.html"));
        // Only the settings UI can request settings
        if (fileURI.compare(source.get()) == 0)
        {
            jsonObj[L"args"][L"tabId"] = web::json::value::number(tabId);
            CheckFailure(PostJsonToWebView(jsonObj, m_controlsWebView.Get()), L"Couldn't retrieve settings.");
        }
    }
    break;
    case MG_CLEAR_CACHE:
    {
        std::wstring fileURI = GetFilePathAsURI(GetFullPathFor(L"wvbrowser_ui\\content_ui\\settings.html"));
        // Only the settings UI can request cache clearing
        if (fileURI.compare(uri.get()) == 0)
        {
            jsonObj[L"args"][L"content"] = web::json::value::boolean(false);
            jsonObj[L"args"][L"controls"] = web::json::value::boolean(false);

            if (SUCCEEDED(ClearContentCache()))
            {
                jsonObj[L"args"][L"content"] = web::json::value::boolean(true);
            }

            if (SUCCEEDED(ClearControlsCache()))
            {
                jsonObj[L"args"][L"controls"] = web::json::value::boolean(true);
            }