rootfolder.cpp

seven zip源代码

// RootFolder.cpp

#include "StdAfx.h"

#include "resource.h"

#include "RootFolder.h"

#include "Common/StringConvert.h"
#include "../../PropID.h"
#include "Windows/Defs.h"
#include "Windows/PropVariant.h"

#include "FSDrives.h"
#include "PhysDriveFolder.h"
#include "NetFolder.h"
#include "SysIconUtils.h"
#include "LangUtils.h"

using namespace NWindows;


static const STATPROPSTG kProperties[] = 
{
  { NULL, kpidName, VT_BSTR}
};

// static const wchar_t *kMyComputerTitle = L"Computer";
// static const wchar_t *kMyNetworkTitle = L"Network";

void CRootFolder::Init() 
{
  _computerName = LangString(IDS_COMPUTER, 0x03020300);
  _networkName = LangString(IDS_NETWORK, 0x03020301);
};

STDMETHODIMP CRootFolder::LoadItems()
{
  Init();
  return S_OK;
}

STDMETHODIMP CRootFolder::GetNumberOfItems(UInt32 *numItems)
{
  *numItems = 2;
  return S_OK;
}

STDMETHODIMP CRootFolder::GetProperty(UInt32 itemIndex, PROPID propID, PROPVARIANT *value)
{
  NCOM::CPropVariant propVariant;
  switch(propID)
  {
    case kpidIsFolder:
      propVariant = true;
      break;
    case kpidName:
      if (itemIndex == 0)
        propVariant = _computerName;
      else if (itemIndex == 1)
        propVariant = _networkName;
      break;
  }
  propVariant.Detach(value);
  return S_OK;
}

STDMETHODIMP CRootFolder::BindToFolder(UInt32 index, IFolderFolder **resultFolder)
{
  if (index == 0)
  {
    CFSDrives *fsDrivesSpec = new CFSDrives;
    CMyComPtr<IFolderFolder> subFolder = fsDrivesSpec;
    fsDrivesSpec->Init();
    *resultFolder = subFolder.Detach();
  }
  else if (index == 1)
  {
    CNetFolder *netFolderSpec = new CNetFolder;
    CMyComPtr<IFolderFolder> subFolder = netFolderSpec;
    netFolderSpec->Init(0, 0, _networkName + L'\\');
    *resultFolder = subFolder.Detach();
  }
  else
    return E_INVALIDARG;
  return S_OK;
}

STDMETHODIMP CRootFolder::BindToFolder(const wchar_t *name, IFolderFolder **resultFolder)
{
  *resultFolder = 0;
  UString name2 = name;
  name2.Trim();
  if (name2.IsEmpty())
  {
    CRootFolder *rootFolderSpec = new CRootFolder;
    CMyComPtr<IFolderFolder> rootFolder = rootFolderSpec;
    rootFolderSpec->Init();
    *resultFolder = rootFolder.Detach();
    return S_OK;
  }
  if (name2 == _computerName || 
      name2 == (_computerName + UString(L'\\')))
    return BindToFolder(UInt32(0), resultFolder);
  if (name2 == _networkName || 
      name2 == (_networkName + UString(L'\\')))
    return BindToFolder(UInt32(1), resultFolder);
  if (name2 == UString(L'\\'))
  {
    CMyComPtr<IFolderFolder> subFolder = this;
    *resultFolder = subFolder.Detach();
    return S_OK;
  }

  if (name2.Length () < 2)
    return E_INVALIDARG;

  CMyComPtr<IFolderFolder> subFolder;
  
  if (name2.Left(4) == L"\\\\.\\")
  {
    CPhysDriveFolder *folderSpec = new CPhysDriveFolder;
    subFolder = folderSpec;
    RINOK(folderSpec->Init(name2.Mid(4, 2)));
  }
  else
  {
    if (name2[name2.Length () - 1] != L'\\')
      name2 += L'\\';
    NFsFolder::CFSFolder *fsFolderSpec = new NFsFolder::CFSFolder;
    subFolder = fsFolderSpec;
    if (fsFolderSpec->Init(name2, 0) != S_OK)
    {
      if (name2[0] == L'\\')
      {
        CNetFolder *netFolderSpec = new CNetFolder;
        subFolder = netFolderSpec;
        netFolderSpec->Init(name2);
      }
      else
        return E_INVALIDARG;
    }
  }
  *resultFolder = subFolder.Detach();
  return S_OK;
}

STDMETHODIMP CRootFolder::BindToParentFolder(IFolderFolder **resultFolder)
{
  *resultFolder = 0;
  return S_OK;
}

STDMETHODIMP CRootFolder::GetNumberOfProperties(UInt32 *numProperties)
{
  *numProperties = sizeof(kProperties) / sizeof(kProperties[0]);
  return S_OK;
}

STDMETHODIMP CRootFolder::GetPropertyInfo(UInt32 index,     
    BSTR *name, PROPID *propID, VARTYPE *varType)
{
  if (index >= sizeof(kProperties) / sizeof(kProperties[0]))
    return E_INVALIDARG;
  const STATPROPSTG &prop = kProperties[index];
  *propID = prop.propid;
  *varType = prop.vt;
  *name = 0;
  return S_OK;
}

STDMETHODIMP CRootFolder::GetFolderProperty(PROPID propID, PROPVARIANT *value)
{
  NWindows::NCOM::CPropVariant prop;
  switch(propID)
  {
    case kpidType: prop = L"RootFolder"; break;
    case kpidPath: prop = L""; break;
  }
  prop.Detach(value);
  return S_OK;
}

STDMETHODIMP CRootFolder::GetSystemIconIndex(UInt32 index, INT32 *iconIndex)
{
  int aCSIDL;
  if (index == 0)
    aCSIDL = CSIDL_DRIVES;
  else
    aCSIDL = CSIDL_NETWORK;
  *iconIndex = GetIconIndexForCSIDL(aCSIDL);
  return S_OK;
}