mirror of
https://github.com/reactos/reactos.git
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134 lines
3.2 KiB
C++
134 lines
3.2 KiB
C++
/*
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* PROJECT: ReactOS browseui
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: Custom MRU AutoComplete List
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* COPYRIGHT: Copyright 2017 Mark Jansen (mark.jansen@reactos.org)
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*/
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#include "precomp.h"
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CACLCustomMRU::CACLCustomMRU()
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:m_bDirty(false)
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{
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}
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CACLCustomMRU::~CACLCustomMRU()
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{
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PersistMRU();
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m_Key.Close();
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}
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void CACLCustomMRU::PersistMRU()
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{
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WCHAR Key[2] = { 0, 0 };
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if (!m_bDirty)
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return;
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m_bDirty = false;
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if (m_Key.m_hKey)
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{
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m_Key.SetStringValue(L"MRUList", m_MRUList);
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for (int Index = 0; Index < m_MRUList.GetLength(); ++Index)
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{
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Key[0] = Index + 'a';
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m_Key.SetStringValue(Key, m_MRUData[Index]);
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}
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}
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}
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// *** IACLCustomMRU methods ***
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HRESULT STDMETHODCALLTYPE CACLCustomMRU::Initialize(LPCWSTR pwszMRURegKey, DWORD dwMax)
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{
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LSTATUS Status = m_Key.Create(HKEY_CURRENT_USER, pwszMRURegKey);
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if (Status != ERROR_SUCCESS)
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return HRESULT_FROM_WIN32(Status);
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m_MRUData.RemoveAll();
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dwMax = max(0, dwMax);
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dwMax = min(29, dwMax);
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while (dwMax--)
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m_MRUData.Add(CStringW());
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WCHAR MRUList[40];
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ULONG nChars = _countof(MRUList);
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Status = m_Key.QueryStringValue(L"MRUList", MRUList, &nChars);
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if (Status != ERROR_SUCCESS)
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return S_OK;
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if (nChars > 0 && MRUList[nChars-1] == '\0')
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nChars--;
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if (nChars > (ULONG)m_MRUData.GetSize())
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return S_OK;
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for (ULONG n = 0; n < nChars; ++n)
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{
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if (MRUList[n] >= 'a' && MRUList[n] <= '}' && m_MRUList.Find(MRUList[n]) < 0)
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{
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WCHAR Key[2] = { MRUList[n], NULL };
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WCHAR Value[MAX_PATH * 2];
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ULONG nValueChars = _countof(Value);
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m_MRUList += MRUList[n];
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int Index = MRUList[n] - 'a';
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if (Index < m_MRUData.GetSize())
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{
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Status = m_Key.QueryStringValue(Key, Value, &nValueChars);
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if (Status == ERROR_SUCCESS)
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{
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m_MRUData[Index] = CStringW(Value, nValueChars);
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}
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}
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}
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}
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE CACLCustomMRU::AddMRUString(LPCWSTR pwszEntry)
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{
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ATLASSERT(m_MRUData.GetSize() <= m_MRUList.GetLength());
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m_bDirty = true;
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CStringW NewElement = pwszEntry;
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WCHAR Key[2] = { 0, 0 };
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int Index = m_MRUData.Find(NewElement);
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if (Index >= 0)
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{
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/* Move the key to the front */
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Key[0] = Index + 'a';
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m_MRUList.Replace(Key, L"");
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m_MRUList = Key + m_MRUList;
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return S_OK;
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}
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int TotalLen = m_MRUList.GetLength();
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if (m_MRUData.GetSize() == TotalLen)
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{
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/* Find oldest element, move that to the front */
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Key[0] = m_MRUList[TotalLen-1];
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m_MRUList = Key + m_MRUList.Left(TotalLen-1);
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Index = Key[0] - 'a';
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}
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else
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{
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/* Find the first empty entry */
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for (Index = 0; Index < m_MRUData.GetSize(); ++Index)
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{
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if (m_MRUData[Index].IsEmpty())
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break;
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}
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Key[0] = Index + 'a';
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m_MRUList = Key + m_MRUList;
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}
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m_MRUData[Index] = NewElement;
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PersistMRU();
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return S_OK;
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}
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