80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1999 - 1999
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//
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// File: trobimpl.h
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//
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//--------------------------------------------------------------------------
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// trobimpl.h : header file
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//
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#ifndef _TROBIMPL_H_
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#define _TROBIMPL_H_
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#include "treeobsv.h"
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/////////////////////////////////////////////////////////////////////////////
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// CTreeObserverTreeImpl
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class CTreeObserverTreeImpl : public CTreeCtrl, public CTreeObserver
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{
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// Construction
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public:
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CTreeObserverTreeImpl();
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virtual ~CTreeObserverTreeImpl();
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// Attributes
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public:
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// Operations
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public:
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STDMETHOD(SetStyle) (DWORD dwStyle);
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STDMETHOD(SetTreeSource) (CTreeSource* pTreeSrc);
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STDMETHOD_(TREEITEMID, GetSelection) ();
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STDMETHOD_(HTREEITEM, FindHTI)(TREEITEMID tid, BOOL bAutoExpand = FALSE);
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STDMETHOD_(void, SetSelection) (TREEITEMID tid);
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STDMETHOD_(void, ExpandItem) (TREEITEMID tid);
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STDMETHOD_(BOOL, IsItemExpanded) (TREEITEMID tid);
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// CTreeObserver methods
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STDMETHOD_(void, ItemAdded) (TREEITEMID tid);
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STDMETHOD_(void, ItemRemoved) (TREEITEMID tidParent, TREEITEMID tidRemoved);
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STDMETHOD_(void, ItemChanged) (TREEITEMID tid, DWORD dwAttrib);
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// Implementation
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private:
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HTREEITEM FindChildHTI(HTREEITEM hitParent, TREEITEMID tid);
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HTREEITEM AddOneItem(HTREEITEM hti, HTREEITEM htiAfter, TREEITEMID tid);
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void AddChildren(HTREEITEM hti);
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bool WasItemExpanded(HTREEITEM hti)
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{
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return (hti == TVI_ROOT) ||
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(hti != NULL && (GetItemState(hti, TVIS_EXPANDEDONCE) & TVIS_EXPANDEDONCE));
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}
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BOOL IsItemExpanded(HTREEITEM hti)
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{
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return (hti == TVI_ROOT) ||
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(hti != NULL && (GetItemState(hti, TVIS_EXPANDED) & TVIS_EXPANDED));
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}
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// Generated message map functions
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protected:
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afx_msg void OnItemExpanding(NMHDR* pNMHDR, LRESULT* pResult);
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afx_msg void OnSingleExpand(NMHDR* pNMHDR, LRESULT* pResult);
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BOOL RootHidden() { return m_dwStyle & TOBSRV_HIDEROOT; }
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BOOL ShowFoldersOnly() { return m_dwStyle & TOBSRV_FOLDERSONLY; }
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DECLARE_MESSAGE_MAP()
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CTreeSource* m_pTreeSrc;
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DWORD m_dwStyle;
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TREEITEMID m_tidRoot; // tid of hidden root
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};
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#endif // _TROBIMPL_H_
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