321 lines
11 KiB
C
321 lines
11 KiB
C
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//+-------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1994 - 1999
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//
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// File: viewpers.h
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//
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// Contents: Classes related to view setting persistence.
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//
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// Classes: CViewSettingsID and CViewSettingPersistor.
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//
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// History: 04-Apr-99 AnandhaG Created
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//
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//--------------------------------------------------------------------
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#ifndef __VIEWPERS_H__
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#define __VIEWPERS_H__
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#pragma once
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#include "bookmark.h"
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#pragma warning(disable: 4503) // Disable long name limit warnings
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using namespace std;
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class CViewSettings;
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class CBookmark;
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/*************************************************************************
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*
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* How CViewSettingsPersistor is used:
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* There is only one CViewSettingsPersistor object per document.
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*
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* The object stored as static variable inside CNode as CNode needs
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* to access this object frequently.
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*
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* The Document needs to initialize/save the object by loading/savind
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* from/to console file. It calls below ScQueryViewSettingsPersistor.
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*
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* The object is created with first call to ScQueryViewSettingsPersistor.
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* The object is destroyed when DocumentClosed event is received.
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*
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*************************************************************************/
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//+-------------------------------------------------------------------
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// View Setting Persistence Versioning
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// This version info is used for MMC1.2 IPersist* interfaces.
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// In MMC2.0, XML maintains versioning using the tags, so this
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// constant is not used. Look at CViewPersistInfo members Load/Save
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// to see how this version information is used.
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static const INT ViewSettingPersistenceVersion = 2;
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// We allow the list to grow VIEWSETTINGS_MAXLIMIT times more,
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// then we do garbage collection.
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#define VIEWSETTINGS_MAXLIMIT 0.4
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//+-------------------------------------------------------------------
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//
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// Class: CViewSettingsID
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//
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// Purpose: To identify the result-view-setting-data. The identifier
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// consists of the triplet [ViewID, NodeTypeGUID, Node-Bookmark]
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//
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// We need to persist some result-view-setting-data per node and
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// some per node-type basis.
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//
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// The [ViewID + Node-Bookmark] identifies a node. In this case
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// NodeTypeGUID will be GUID_NULL.
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//
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// The [ViewID + NodeTypeGUID] identifies a nodetype. In this case
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// Node-Bookmark will be invalid object (see CBookmark for invalid obj).
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//
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// History: 06-22-2000 AnandhaG Created
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//
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//--------------------------------------------------------------------
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class CViewSettingsID : public CXMLObject
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{
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public:
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friend class CViewPersistInfo;
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friend IStream& operator>> (IStream& stm, CViewSettingsID& viewSettingsID);
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public:
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CViewSettingsID() : m_dwViewID(-1), m_nodeTypeGUID(GUID_NULL)
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{
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// m_bookmark is initialized as not valid by default constructor
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}
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// Synopsis: Given the view-id & bookmark (not nodetypeguid) construct
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// a CViewSettingsID object (with GUID_NULL as nodetypeguid).
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CViewSettingsID(INT nViewID, const CBookmark& bookmark)
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{
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m_dwViewID = nViewID;
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m_bookmark = bookmark;
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m_nodeTypeGUID = GUID_NULL;
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}
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// Synopsis: Given the view-id & nodetype guid (not bookmark) construct
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// a CViewSettingsID object (with invalid bookmark).
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CViewSettingsID(INT nViewID, const GUID& guidNodeType)
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{
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m_dwViewID = nViewID;
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m_nodeTypeGUID = guidNodeType;
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// m_bookmark is initialized as not valid by default constructor
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}
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/*
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CViewSettingsID(const CViewSettingsID& viewSettingsID)
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{
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m_dwViewID = viewSettingsID.m_dwViewID;
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m_bookmark = viewSettingsID.m_bookmark;
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m_nodeTypeGUID = viewSettingsID.m_nodeTypeGUID;
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}
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CViewSettingsID& operator=(const CViewSettingsID& viewSettingsID)
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{
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if (this != &viewSettingsID)
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{
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m_dwViewID = viewSettingsID.m_dwViewID;
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m_bookmark = viewSettingsID.m_bookmark;
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m_nodeTypeGUID = viewSettingsID.m_nodeTypeGUID;
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}
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return (*this);
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}
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bool operator==(const CViewSettingsID& viewSettingsID) const
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{
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return ((m_dwViewID == viewSettingsID.m_dwViewID) &&
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(m_bookmark == viewSettingsID.m_bookmark) &&
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(m_nodeTypeGUID == viewSettingsID.m_nodeTypeGUID) );
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}
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*/
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/*
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Compare view id first, then guid and then bookmark.
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*/
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bool operator<(const CViewSettingsID& viewSettingsID) const
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{
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// First compare view-ids (low cost).
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if (m_dwViewID < viewSettingsID.m_dwViewID)
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return true;
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if (m_dwViewID > viewSettingsID.m_dwViewID)
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return false;
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// The view-ids match so now compare GUIDs.
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if (m_nodeTypeGUID < viewSettingsID.m_nodeTypeGUID)
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return true;
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if (m_nodeTypeGUID > viewSettingsID.m_nodeTypeGUID)
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return false;
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// The view-ids as well as guids match so compare bookmarks.
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if (m_bookmark < viewSettingsID.m_bookmark)
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return true;
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return false;
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}
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DWORD get_ViewID() const { return m_dwViewID;}
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virtual void Persist(CPersistor &persistor)
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{
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persistor.PersistAttribute(XML_ATTR_VIEW_SETTINGS_ID_VIEW, m_dwViewID);
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persistor.PersistAttribute(XML_ATTR_NODETYPE_GUID, m_nodeTypeGUID, attr_optional); // optional
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/*
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* Storing: save book mark only if it is valid.
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* Loading: See if bookmark is present for this element before reading.
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*/
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if ( ( persistor.IsStoring() && m_bookmark.IsValid() ) ||
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( persistor.IsLoading() && persistor.HasElement(m_bookmark.GetXMLType(), NULL) ))
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persistor.Persist(m_bookmark);
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}
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DEFINE_XML_TYPE(XML_TAG_VIEW_SETTINGS_ID);
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protected:
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CBookmark m_bookmark;
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GUID m_nodeTypeGUID;
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DWORD m_dwViewID;
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};
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//+-------------------------------------------------------------------
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//
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// Member: operator>>
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//
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// Synopsis: Reads CViewSettingsID data from the stream.
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//
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// Arguments: [stm] - The input stream.
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// [viewSettingsID] - CViewSettingsID object.
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//
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// The format is :
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// DWORD viewID
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// CBookmark*
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//
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//--------------------------------------------------------------------
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inline IStream& operator>> (IStream& stm, CViewSettingsID& rvsd)
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{
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ASSERT(rvsd.m_nodeTypeGUID == GUID_NULL);
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rvsd.m_nodeTypeGUID = GUID_NULL;
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return (stm >> rvsd.m_dwViewID >> rvsd.m_bookmark);
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}
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//+-------------------------------------------------------------------
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//
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// Data structures used to persist view information:
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//
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// View information is persisted as follows:
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// Internally, the following data structure is used. View information
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// is recorded per view.
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// map
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// [View ID, NodeTypeGUID, Bookmark]------> iterator to a list containing CViewSettings.
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//
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// The list contains CViewSettings to all the views, and is ordered
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// in with most recently used data in the front of the list.
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// This is useful for garbage collection.
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//
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// Persistence: The information is serialized as follows:
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//
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// 1) Stream version
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// 2) Number of viewSettings
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// 3) For each viewSettings
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// i) CViewSettingsID (the identifier).
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// ii) CViewSettings(the data).
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//
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//--------------------------------------------------------------------
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typedef list<CViewSettings> CViewSettingsList;
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typedef CViewSettingsList::iterator IteratorToViewSettingsList;
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// A one to one map from CViewSettings to pointer to CViewSettings.
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typedef map<CViewSettingsID, IteratorToViewSettingsList> CViewSettingsIDToViewSettingsMap;
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//+-------------------------------------------------------------------
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//
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// Class: CViewSettingsPersistor
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//
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// Purpose: This class has persisted settings information for nodes & nodetypes
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// in all views (therefore one per instance of mmc).
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// It knows to load/save the info from streams.
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//
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// History: 04-23-1999 AnandhaG Created
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//
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// Data structures used to persist view information:
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// A map from the CViewSettingsID to pointer to CViewSettings class.
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//
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//--------------------------------------------------------------------
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class CViewSettingsPersistor : public IPersistStream,
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public CComObjectRoot,
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public XMLMapCollectionBase
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{
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private:
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CViewSettingsList m_listViewSettings;
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CViewSettingsIDToViewSettingsMap m_mapViewSettingsIDToViewSettings;
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bool m_bDirty;
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// This is the max number of items specified by user???
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// We go 40% more so that we dont do garbage collection often.
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DWORD m_dwMaxItems;
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public:
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/*
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* ATL COM map
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*/
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BEGIN_COM_MAP (CViewSettingsPersistor)
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COM_INTERFACE_ENTRY (IPersistStream)
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END_COM_MAP ()
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CViewSettingsPersistor();
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SC ScDeleteDataOfView( int nViewID);
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// IPersistStream methods
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STDMETHOD(IsDirty)(void) { return ( m_bDirty ? S_OK : S_FALSE); }
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STDMETHOD(GetSizeMax)(ULARGE_INTEGER *pcbSize) { ASSERT(FALSE); return E_NOTIMPL;}
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STDMETHOD(GetClassID)(LPCLSID lpClsid) { ASSERT(FALSE); return E_NOTIMPL; }
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STDMETHOD(Load)(IStream *pStm);
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STDMETHOD(Save)(IStream *pStm, BOOL fClearDirty);
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// XML persistence helpers
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virtual void Persist(CPersistor &persistor);
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virtual void OnNewElement(CPersistor& persistKey,CPersistor& persistVal);
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DEFINE_XML_TYPE(XML_TAG_VIEW_PERSIST_INFO)
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// Members to access viewsettings data.
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// 1. Taskpad IDs.
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// 1.a) Per NodeTypeGUID
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SC ScGetTaskpadID(int nViewID, const GUID& guidNodeType ,GUID& guidTaskpad);
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SC ScSetTaskpadID(int nViewID, const GUID& guidNodeType ,const CBookmark& bookmark,
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const GUID& guidTaskpad, bool bSetDirty);
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// 1.b) Per node
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SC ScGetTaskpadID(int nViewID, const CBookmark& bookmark,GUID& guidTaskpad);
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SC ScSetTaskpadID(int nViewID, const CBookmark& bookmark,const GUID& guidTaskpad, bool bSetDirty);
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// 2. View mode.
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SC ScGetViewMode (int nViewID, const CBookmark& bookmark, ULONG& ulViewMode);
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SC ScSetViewMode (int nViewID, const CBookmark& bookmark, ULONG ulViewMode);
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// 3. ResultViewTypeInfo.
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SC ScGetResultViewType (int nViewID, const CBookmark& bookmark, CResultViewType& rvt);
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SC ScSetResultViewType (int nViewID, const CBookmark& bookmark, const CResultViewType& rvt);
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SC ScSetFavoriteViewSettings (int nViewID, const CBookmark& bookmark, const CViewSettings& viewSettings);
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private:
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SC ScGetViewSettings( const CViewSettingsID& viewSettingsID, CViewSettings& viewSettings);
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SC ScSetViewSettings( const CViewSettingsID& viewSettingsID, const CViewSettings& viewSettings, bool bSetViewDirty);
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SC ScGarbageCollectItems();
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SC ScDeleteMarkedItems();
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};
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#endif /* __VIEWPERS_H__ */
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