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// UserRegistrar.cpp: Implementierung der Klasse UserRegistrar.
//
//////////////////////////////////////////////////////////////////////
#include "userregistrar.hxx"
#include "registryvalueimpl.hxx"
#include "windowsregistry.hxx"
#include "registryexception.hxx"
#ifdef _MSC_VER
#pragma warning(disable : 4350)
#endif
//--------------------------------------
/**
*/
UserRegistrar::UserRegistrar(const RegistrationContextInformation& RegContext) :
Registrar(RegContext)
{
RegistryKey RegKey = WindowsRegistry().GetCurrentUserKey();
m_RootKey = RegKey->OpenSubKey(L"Software\\Classes");
}
//###################################
// Command
//###################################
//--------------------------------------
/**
*/
void UserRegistrar::UnregisterAsHtmlEditorForInternetExplorer() const
{
Registrar::UnregisterAsHtmlEditorForInternetExplorer();
DeleteHtmFileAssociationKeys();
try
{
RegistryKey RegKey = m_RootKey->OpenSubKey(L"Applications");
if ((0 == RegKey->GetSubValueCount()) && (0 == RegKey->GetSubKeyCount()))
{
RegKey->Close();
m_RootKey->DeleteSubKey(L"Applications");
}
}
catch(RegistryKeyNotFoundException&)
{
}
}
//--------------------------------------
/**
*/
void UserRegistrar::RegisterAsDefaultShellHtmlEditor() const
{
RegistryKey LocalHtmKey = m_RootKey->CreateSubKey(L".htm");
if (!LocalHtmKey->HasValue(DEFAULT_VALUE_NAME))
{
RegistryKey HKCRKey = WindowsRegistry().GetClassesRootKey();
if (HKCRKey->HasSubKey(L".htm"))
{
RegistryKey RootHtmKey = HKCRKey->OpenSubKey(L".htm", false);
if (RootHtmKey->HasValue(DEFAULT_VALUE_NAME))
{
RegistryValue RegVal = RootHtmKey->GetValue(DEFAULT_VALUE_NAME);
std::wstring RootHtmFwdKey = RegVal->GetDataAsUniString();
if (HKCRKey->HasSubKey(RootHtmFwdKey))
{
m_RootKey->CreateSubKey(RootHtmFwdKey);
LocalHtmKey->CopyValue(RootHtmKey, DEFAULT_VALUE_NAME);
}
}
}
}
// calling base class method
Registrar::RegisterAsDefaultShellHtmlEditor();
}
//--------------------------------------
/**
*/
void UserRegistrar::UnregisterAsDefaultShellHtmlEditor() const
{
// calling base class method
Registrar::UnregisterAsDefaultShellHtmlEditor();
DeleteHtmFileAssociationKeys();
}
//--------------------------------------
/**
*/
void UserRegistrar::UnregisterForMsOfficeApplication(
const std::wstring& FileExtension) const
{
/// calling base class method
Registrar::UnregisterForMsOfficeApplication(FileExtension);
if (m_RootKey->HasSubKey(FileExtension))
{
RegistryKey RegKey = m_RootKey->OpenSubKey(FileExtension);
if ((0 == RegKey->GetSubKeyCount()) && (0 == RegKey->GetSubValueCount()))
{
RegKey->Close();
m_RootKey->DeleteSubKey(FileExtension);
}
}
}
//--------------------------------------
/**
*/
RegistryKey UserRegistrar::GetRootKeyForDefHtmlEditorForIERegistration() const
{
return WindowsRegistry().GetCurrentUserKey();
}
//--------------------------------------
/**
*/
void UserRegistrar::DeleteHtmFileAssociationKeys() const
{
// Later delete the created keys if they are empty and have not changed meanwhile.
// Remeber: if we create a new registry key in the user part of the
// registry, changes to that key via the merged key HKEY_CLASSES_ROOT
// go into the user branch HKEY_CURRENT_USER and are not visible for other users.
// so we must carefully detect if the keys have not changed in order to prevent accidentally
// deleting a key and so destroying existing associations
// See MSDN: "Merged View of HKEY_CLASSES_ROOT"
}
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