140 lines
7.4 KiB
C
140 lines
7.4 KiB
C
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/*****************************************************************************\
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FILE: isf.h
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DESCRIPTION:
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This is a base class that implements the default behavior of IShellFolder.
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\*****************************************************************************/
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#ifndef _DEFAULT_ISHELLFOLDER_H
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#define _DEFAULT_ISHELLFOLDER_H
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#include "cowsite.h"
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/*****************************************************************************\
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CLASS: CBaseFolder
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DESCRIPTION:
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The stuff that tracks the state of a folder.
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The cBusy field tracks how many sub-objects have been created
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(e.g., IEnumIDList) which still contain references to this
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folder's identity. You cannot change the folder's identity
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(via IPersistFolder::Initialize) while there are outstanding
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subobjects.
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The number of cBusy's never exceeds the number of cRef's, because
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each subobject that requires the folder identity must retain a
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reference to the folder itself. That way, the folder won't be
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Release()d while the identity is still needed.
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Name Space description (for m_pidlComplete & m_nIDOffsetToOurNameSpaceRoot):
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The name space is provided by the shell to describe resources for the user.
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This class is a base implementation so users can create their own name space
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that is rooted in the shell's name space. A PIDL is a list of ItemID, each of
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which represent one level in the name space. The list provides a path thru
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the name space to a specific item. Example:
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[Desktop][My Computer][C:\][Dir1][Dir2][File.htm][#goto_description_secion]
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[Desktop][The Internet][ftp://server/][Dir1][Dir2][file.txt]
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[Desktop][My Computer][PrivateNS lvl1][lvl2][lvl3]...
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(Public Name Space) (Private Name Space)
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[GNS Level1][GNS Levl2][Pri LVL1][P LVL2][P LVL3]...
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In the example immediately above, this CBaseFolder can create a name space
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under "My Computer" that has 3 levels (lvl1, lvl2, lvl3). An instance of this
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COM object will be positioned at one level of the sub name space (lvl1, lvl2, or lvl3).
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m_pidlComplete - is the list of ItemIDs from the base [Desktop] to the current location
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maybe lvl2.
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m_nIDOffsetToOurNameSpaceRoot - is the number of bytes of m_pidlComplete that you need
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to skip to get to the first ItemID in the private name space (which
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is the name space owned by this class).
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\*****************************************************************************/
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class CBaseFolder : public IShellFolder2
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, public IPersistFolder3
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, public CObjectWithSite
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{
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public:
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//////////////////////////////////////////////////////
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// Public Interfaces
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//////////////////////////////////////////////////////
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// *** IUnknown ***
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virtual STDMETHODIMP_(ULONG) AddRef(void);
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virtual STDMETHODIMP_(ULONG) Release(void);
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virtual STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);
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// *** IShellFolder ***
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virtual STDMETHODIMP ParseDisplayName(HWND hwndOwner, LPBC pbcReserved, LPOLESTR lpszDisplayName,
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ULONG * pchEaten, LPITEMIDLIST * ppidl, ULONG *pdwAttributes);
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virtual STDMETHODIMP EnumObjects(HWND hwndOwner, DWORD grfFlags, LPENUMIDLIST * ppenumIDList);
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virtual STDMETHODIMP BindToObject(LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvOut);
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virtual STDMETHODIMP BindToStorage(LPCITEMIDLIST pidl, LPBC pbcReserved, REFIID riid, LPVOID * ppvObj);
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virtual STDMETHODIMP CompareIDs(LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2);
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virtual STDMETHODIMP CreateViewObject(HWND hwndOwner, REFIID riid, LPVOID * ppvOut);
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virtual STDMETHODIMP GetAttributesOf(UINT cidl, LPCITEMIDLIST * apidl, ULONG * rgfInOut);
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virtual STDMETHODIMP GetUIObjectOf(HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid, UINT * prgfInOut, LPVOID * ppvOut);
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virtual STDMETHODIMP GetDisplayNameOf(LPCITEMIDLIST pidl, DWORD uFlags, LPSTRRET lpName);
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virtual STDMETHODIMP SetNameOf(HWND hwndOwner, LPCITEMIDLIST pidl, LPCOLESTR lpszName, DWORD uFlags, LPITEMIDLIST * ppidlOut);
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// *** IShellFolder2 ***
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virtual STDMETHODIMP GetDefaultSearchGUID(GUID *pguid) {return E_NOTIMPL;};
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virtual STDMETHODIMP EnumSearches(IEnumExtraSearch **ppenum) {return E_NOTIMPL;};
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virtual STDMETHODIMP GetDefaultColumn(DWORD dwRes, ULONG *pSort, ULONG *pDisplay) {return E_NOTIMPL;};
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virtual STDMETHODIMP GetDefaultColumnState(UINT iColumn, DWORD *pcsFlags) {return E_NOTIMPL;};
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virtual STDMETHODIMP GetDetailsEx(LPCITEMIDLIST pidl, const SHCOLUMNID *pscid, VARIANT *pv) {return E_NOTIMPL;};
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virtual STDMETHODIMP GetDetailsOf(LPCITEMIDLIST pidl, UINT iColumn, SHELLDETAILS *psd) {return E_NOTIMPL;};
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virtual STDMETHODIMP MapColumnToSCID(UINT iCol, SHCOLUMNID *pscid) {return E_NOTIMPL;};
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// *** IPersist ***
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virtual STDMETHODIMP GetClassID(LPCLSID lpClassID);
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// *** IPersistFolder ***
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virtual STDMETHODIMP Initialize(LPCITEMIDLIST pidl);
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// *** IPersistFolder2 ***
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virtual STDMETHODIMP GetCurFolder(LPITEMIDLIST *ppidl);
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// *** IPersistFolder3 ***
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virtual STDMETHODIMP InitializeEx(IBindCtx *pbc, LPCITEMIDLIST pidlRoot, const PERSIST_FOLDER_TARGET_INFO *ppfti);
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virtual STDMETHODIMP GetFolderTargetInfo(PERSIST_FOLDER_TARGET_INFO *ppfti);
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public:
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CBaseFolder(LPCLSID pClassID);
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virtual ~CBaseFolder(void);
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// Public Member Functions
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virtual HRESULT _GetUIObjectOf(HWND hwndOwner, UINT cidl, LPCITEMIDLIST * apidl, REFIID riid, UINT * prgfInOut, LPVOID * ppvOut, BOOL fFromCreateViewObject);
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virtual HRESULT _Initialize(LPCITEMIDLIST pidlRoot, LPCITEMIDLIST pidlAliasRoot, int nBytesToPrivate);
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virtual HRESULT _CreateShellView(HWND hwndOwner, void ** ppvObj) = 0; // PURE
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virtual HRESULT _CreateShellView(HWND hwndOwner, void ** ppvObj, LONG lEvents, FOLDERVIEWMODE fvm, IShellFolderViewCB * psfvCallBack,
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LPCITEMIDLIST pidl, LPFNVIEWCALLBACK pfnCallback);
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LPCITEMIDLIST GetPublicTargetPidlReference(void) { return m_pidl;};
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LPITEMIDLIST GetPublicTargetPidlClone(void) { return ILClone(GetPublicTargetPidlReference());};
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LPCITEMIDLIST GetPublicRootPidlReference(void) { return (m_pidlRoot ? m_pidlRoot : m_pidl);};
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LPITEMIDLIST GetPublicRootPidlClone(void) { return ILClone(GetPublicRootPidlReference());};
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LPCITEMIDLIST GetPrivatePidlReference(void);
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LPITEMIDLIST GetPrivatePidlClone(void) { return ILClone(GetPrivatePidlReference());};
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LPITEMIDLIST GetPublicPidlRootIDClone(void);
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LPITEMIDLIST CreateFullPublicPidlFromRelative(LPCITEMIDLIST pidlPrivateSubPidl);
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LPITEMIDLIST CreateFullPrivatePidl(LPCITEMIDLIST pidlPrivateSubPidl);
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LPITEMIDLIST CreateFullPublicPidl(LPCITEMIDLIST pidlPrivatePidl);
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LPCITEMIDLIST GetFolderPidl(void) { return m_pidlRoot;};
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protected:
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int m_cRef;
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int GetPidlByteOffset(void) { return m_nIDOffsetToPrivate;};
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private:
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LPITEMIDLIST m_pidl; // Public Pidl - Complete list of IDs from very base of NameSpace to this name space and into this name space to the point of being rooted.
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LPITEMIDLIST m_pidlRoot; // Pidl of Folder Shortcut.
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int m_nIDOffsetToPrivate; // number of bytes from the start of m_pidlComplete to the first ItemID in our name space.
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LPCLSID m_pClassID; // My CLSID
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};
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#endif // _DEFAULT_ISHELLFOLDER_H
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