[gadamopoulos] 72775: [SHELL32] - CDefaultContextMenu: Simplify some really superfluous code and add more checks for bogus parameters. Create the data object using GetUIObjectOf instead of SHCreate...

Author: gadamopoulos
Date: Thu Sep 22 19:54:15 2016
New Revision: 72775
URL: http://svn.reactos.org/svn/reactos?rev=72775&view=rev
Log:
[SHELL32]
- CDefaultContextMenu: Simplify some really superfluous code and add more checks for bogus
parameters. Create the data object using GetUIObjectOf instead of SHCreateDataObject. Each
sell folder should be able to use its own special data object.
Modified:
    trunk/reactos/dll/win32/shell32/CDefaultContextMenu.cpp
Modified: trunk/reactos/dll/win32/shell32/CDefaultContextMenu.cpp
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/shell32/CDefault…
==============================================================================
--- trunk/reactos/dll/win32/shell32/CDefaultContextMenu.cpp     [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/shell32/CDefaultContextMenu.cpp     [iso-8859-1] Thu Sep 22
19:54:15 2016
@@ -176,8 +176,6 @@
 HRESULT WINAPI CDefaultContextMenu::Initialize(const DEFCONTEXTMENU *pdcm)
 {
-    CComPtr<IDataObject> pDataObj;
-
     TRACE("cidl %u\n", pdcm->cidl);
     m_cidl = pdcm->cidl;
@@ -186,8 +184,7 @@
         return E_OUTOFMEMORY;
     m_psf = pdcm->psf;
-    if (SUCCEEDED(SHCreateDataObject(pdcm->pidlFolder, pdcm->cidl, pdcm->apidl,
NULL, IID_PPV_ARG(IDataObject, &pDataObj))))
-        m_pDataObj = pDataObj;
+    m_psf->GetUIObjectOf(pdcm->hwnd, m_cidl, m_apidl, IID_NULL_PPV_ARG(IDataObject,
&m_pDataObj));
     if (pdcm->pidlFolder)
     {
@@ -399,26 +396,17 @@
     CComPtr<IContextMenu> pcm;
     hr = SHCoCreateInstance(NULL, pclsid, NULL, IID_PPV_ARG(IContextMenu, &pcm));
-    if (hr != S_OK)
-    {
-        ERR("SHCoCreateInstance failed %x\n", GetLastError());
+    if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-    }
     CComPtr<IShellExtInit> pExtInit;
     hr = pcm->QueryInterface(IID_PPV_ARG(IShellExtInit, &pExtInit));
-    if (hr != S_OK)
-    {
-        ERR("Failed to query for interface IID_IShellExtInit hr %x pclsid
%s\n", hr, wine_dbgstr_guid(pclsid));
+    if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-    }
     hr = pExtInit->Initialize(m_pidlFolder, m_pDataObj, hKey);
-    if (hr != S_OK)
-    {
-        TRACE("Failed to initialize shell extension error %x pclsid %s\n", hr,
wine_dbgstr_guid(pclsid));
+    if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-    }
     PDynamicShellEntry pEntry = (DynamicShellEntry *)HeapAlloc(GetProcessHeap(), 0,
sizeof(DynamicShellEntry));
     if (!pEntry)
@@ -997,15 +985,12 @@
 HRESULT
 CDefaultContextMenu::NotifyShellViewWindow(LPCMINVOKECOMMANDINFO lpcmi, BOOL bRefresh)
 {
-    CComPtr<IShellView> psv;
-
-    HRESULT hr;
-
     if (!m_site)
         return E_FAIL;
     /* Get a pointer to the shell browser */
-    hr = IUnknown_QueryService(m_site, SID_IFolderView, IID_PPV_ARG(IShellView,
&psv));
+    CComPtr<IShellView> psv;
+    HRESULT hr = IUnknown_QueryService(m_site, SID_IFolderView, IID_PPV_ARG(IShellView,
&psv));
     if (FAILED_UNEXPECTEDLY(hr))
         return hr;
@@ -1015,13 +1000,12 @@
     return S_OK;
 }
-HRESULT
-CDefaultContextMenu::DoRefresh(
-    LPCMINVOKECOMMANDINFO lpcmi)
+
+HRESULT CDefaultContextMenu::DoRefresh(LPCMINVOKECOMMANDINFO lpcmi)
 {
     if (!m_site)
         return E_FAIL;
-
+
     /* Get a pointer to the shell view */
     CComPtr<IShellView> psv;
     HRESULT hr = IUnknown_QueryService(m_site, SID_IFolderView, IID_PPV_ARG(IShellView,
&psv));
@@ -1031,62 +1015,14 @@
     return psv->Refresh();
 }
-HRESULT
-CDefaultContextMenu::DoPaste(
-    LPCMINVOKECOMMANDINFO lpcmi, BOOL bLink)
+HRESULT CDefaultContextMenu::DoPaste(LPCMINVOKECOMMANDINFO lpcmi, BOOL bLink)
 {
     HRESULT hr;
     CComPtr<IDataObject> pda;
     hr = OleGetClipboard(&pda);
-    if (FAILED(hr))
+    if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-
-    CComPtr<IShellFolder> psfDesktop;
-    CComPtr<IShellFolder> psfTarget = NULL;
-
-    hr = SHGetDesktopFolder(&psfDesktop);
-    if (FAILED(hr))
-        return hr;
-
-    /* Find target folder */
-    if (m_cidl)
-    {
-        hr = m_psf->BindToObject(m_apidl[0], NULL, IID_PPV_ARG(IShellFolder,
&psfTarget));
-    }
-    else
-    {
-        CComPtr<IPersistFolder2> ppf2 = NULL;
-        LPITEMIDLIST pidl;
-
-        /* cidl is zero due to explorer view */
-        hr = m_psf->QueryInterface(IID_PPV_ARG(IPersistFolder2, &ppf2));
-        if (SUCCEEDED(hr))
-        {
-            hr = ppf2->GetCurFolder(&pidl);
-            if (SUCCEEDED(hr))
-            {
-                if (_ILIsDesktop(pidl))
-                {
-                    /* use desktop shellfolder */
-                    psfTarget = psfDesktop;
-                }
-                else
-                {
-                    /* retrieve target desktop folder */
-                    hr = psfDesktop->BindToObject(pidl, NULL,
IID_PPV_ARG(IShellFolder, &psfTarget));
-                }
-                TRACE("psfTarget %x %p, Desktop %u\n", hr, psfTarget.p,
_ILIsDesktop(pidl));
-                ILFree(pidl);
-            }
-        }
-    }
-
-    if (FAILED(hr))
-    {
-        ERR("no IShellFolder\n");
-        return hr;
-    }
     FORMATETC formatetc2;
     STGMEDIUM medium2;
@@ -1116,12 +1052,13 @@
     }
     CComPtr<IDropTarget> pdrop;
-    hr = psfTarget->CreateViewObject(NULL, IID_PPV_ARG(IDropTarget, &pdrop));
-    if (FAILED(hr))
-    {
-        ERR("Error getting IDropTarget interface\n");
+    if (m_cidl)
+        hr = m_psf->GetUIObjectOf(NULL, 1, &m_apidl[0],
IID_NULL_PPV_ARG(IDropTarget, &pdrop));
+    else
+        hr = m_psf->CreateViewObject(NULL, IID_PPV_ARG(IDropTarget, &pdrop));
+
+    if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-    }
     SHSimulateDrop(pdrop, pda, dwKey, NULL, NULL);
@@ -1130,128 +1067,69 @@
 }
 HRESULT
-CDefaultContextMenu::DoOpenOrExplore(
-    LPCMINVOKECOMMANDINFO lpcmi)
+CDefaultContextMenu::DoOpenOrExplore(LPCMINVOKECOMMANDINFO lpcmi)
 {
     UNIMPLEMENTED;
     return E_FAIL;
 }
-HRESULT
-CDefaultContextMenu::DoCreateLink(
-    LPCMINVOKECOMMANDINFO lpcmi)
-{
-    CComPtr<IDataObject> pDataObj;
+HRESULT CDefaultContextMenu::DoCreateLink(LPCMINVOKECOMMANDINFO lpcmi)
+{
+    if (!m_cidl || !m_pDataObj)
+        return E_FAIL;
+
     CComPtr<IDropTarget> pDT;
-    HRESULT hr;
-    CComPtr<IPersistFolder2> ppf2 = NULL;
-    LPITEMIDLIST pidl;
-    CComPtr<IShellFolder> psfDesktop;
-    CComPtr<IShellFolder> psfTarget = NULL;
-
-    hr = SHGetDesktopFolder(&psfDesktop);
-    if (FAILED(hr))
+    HRESULT hr = m_psf->CreateViewObject(NULL, IID_PPV_ARG(IDropTarget, &pDT));
+    if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-    if (SUCCEEDED(hr = SHCreateDataObject(m_pidlFolder, m_cidl, m_apidl, NULL,
IID_PPV_ARG(IDataObject, &pDataObj))))
-    {
-        hr = m_psf->QueryInterface(IID_PPV_ARG(IPersistFolder2, &ppf2));
-        if (SUCCEEDED(hr))
-        {
-            hr = ppf2->GetCurFolder(&pidl);
-            if (SUCCEEDED(hr))
-            {
-                if (_ILIsDesktop(pidl))
-                {
-                    /* use desktop shellfolder */
-                    psfTarget = psfDesktop;
-                }
-                else
-                {
-                    /* retrieve target desktop folder */
-                    hr = psfDesktop->BindToObject(pidl, NULL,
IID_PPV_ARG(IShellFolder, &psfTarget));
-                }
-                TRACE("psfTarget %x %p, Desktop %u\n", hr, psfTarget.p,
_ILIsDesktop(pidl));
-                ILFree(pidl);
-            }
-        }
-
-    }
-
-    if (FAILED(hr))
-    {
-        ERR("no IShellFolder\n");
-        return hr;
-    }
-
-    hr = psfTarget->CreateViewObject(NULL, IID_PPV_ARG(IDropTarget, &pDT));
-    if (FAILED(hr))
-    {
-        ERR("no IDropTarget Interface\n");
-        return hr;
-    }
-    SHSimulateDrop(pDT, pDataObj, MK_CONTROL|MK_SHIFT, NULL, NULL);
+    SHSimulateDrop(pDT, m_pDataObj, MK_CONTROL|MK_SHIFT, NULL, NULL);
     return S_OK;
 }
 HRESULT CDefaultContextMenu::DoDelete(LPCMINVOKECOMMANDINFO lpcmi)
 {
+    if (!m_cidl || !m_pDataObj)
+        return E_FAIL;
+
     DoDeleteAsync(m_pDataObj, lpcmi->fMask);
     return S_OK;
 }
-HRESULT
-CDefaultContextMenu::DoCopyOrCut(
-    LPCMINVOKECOMMANDINFO lpcmi,
-    BOOL bCopy)
-{
-    CComPtr<IDataObject> pDataObj;
-    HRESULT hr;
-
-    hr = SHCreateDataObject(m_pidlFolder, m_cidl, m_apidl, NULL, IID_PPV_ARG(IDataObject,
&pDataObj));
-    if (FAILED_UNEXPECTEDLY(hr))
-        return hr;
+HRESULT CDefaultContextMenu::DoCopyOrCut(LPCMINVOKECOMMANDINFO lpcmi, BOOL bCopy)
+{
+    if (!m_cidl || !m_pDataObj)
+        return E_FAIL;
     if (!bCopy)
     {
         FORMATETC formatetc;
         STGMEDIUM medium;
         InitFormatEtc(formatetc, RegisterClipboardFormatW(CFSTR_PREFERREDDROPEFFECT),
TYMED_HGLOBAL);
-        pDataObj->GetData(&formatetc, &medium);
+        m_pDataObj->GetData(&formatetc, &medium);
         DWORD * pdwFlag = (DWORD*)GlobalLock(medium.hGlobal);
         if (pdwFlag)
             *pdwFlag = DROPEFFECT_MOVE;
         GlobalUnlock(medium.hGlobal);
-        pDataObj->SetData(&formatetc, &medium, TRUE);
-    }
-
-    return OleSetClipboard(pDataObj);
-}
-
-HRESULT
-CDefaultContextMenu::DoRename(
-    LPCMINVOKECOMMANDINFO lpcmi)
+        m_pDataObj->SetData(&formatetc, &medium, TRUE);
+    }
+
+    return OleSetClipboard(m_pDataObj);
+}
+
+HRESULT CDefaultContextMenu::DoRename(LPCMINVOKECOMMANDINFO lpcmi)
 {
     CComPtr<IShellBrowser> psb;
     HRESULT hr;
-    if (!m_site)
+    if (!m_site || !m_cidl)
         return E_FAIL;
     /* Get a pointer to the shell browser */
     hr = IUnknown_QueryService(m_site, SID_IShellBrowser, IID_PPV_ARG(IShellBrowser,
&psb));
     if (FAILED_UNEXPECTEDLY(hr))
         return hr;
-
-    /* is the treeview focused */
-    HWND hwnd;
-    if (SUCCEEDED(psb->GetControlWindow(FCW_TREE, &hwnd)))
-    {
-        HTREEITEM hItem = TreeView_GetSelection(hwnd);
-        if (hItem)
-            (void)TreeView_EditLabel(hwnd, hItem);
-    }
     CComPtr<IShellView> lpSV;
     hr = psb->QueryActiveShellView(&lpSV);