Source code of Windows XP (NT5)
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//==============================================================;
//
// This source code is only intended as a supplement to
// existing Microsoft documentation.
//
//
//
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
//
//
//
//==============================================================;
#include <stdio.h>
#include "DataObj.h"
#include "Space.h"
#include "Comp.h"
const GUID CSpaceFolder::thisGuid = { 0x29743810, 0x4c4b, 0x11d2, { 0x89, 0xd8, 0x0, 0x0, 0x21, 0x47, 0x31, 0x28 } };
const GUID CSpaceStation::thisGuid = { 0x62273a12, 0x1914, 0x11d3, { 0x9a, 0x38, 0x0, 0x80, 0xc7, 0x25, 0x80, 0x72 } };
const GUID CRocket::thisGuid = { 0x29743811, 0x4c4b, 0x11d2, { 0x89, 0xd8, 0x0, 0x0, 0x21, 0x47, 0x31, 0x28 } };
//==============================================================
//
// CSpaceFolder implementation
//
//
CSpaceFolder::CSpaceFolder()
{
for (int n = 0; n < NUMBER_OF_CHILDREN; n++) {
children[n] = new CSpaceStation();
}
}
CSpaceFolder::~CSpaceFolder()
{
for (int n = 0; n < NUMBER_OF_CHILDREN; n++)
if (children[n]) {
delete children[n];
}
}
HRESULT CSpaceFolder::OnExpand(IConsoleNameSpace *pConsoleNameSpace, IConsole *pConsole, HSCOPEITEM parent)
{
SCOPEDATAITEM sdi;
if (!bExpanded) {
// create the child nodes, then expand them
for (int n = 0; n < NUMBER_OF_CHILDREN; n++) {
ZeroMemory(&sdi, sizeof(SCOPEDATAITEM) );
sdi.mask = SDI_STR | // Displayname is valid
SDI_PARAM | // lParam is valid
SDI_IMAGE | // nImage is valid
SDI_OPENIMAGE | // nOpenImage is valid
SDI_PARENT |
SDI_CHILDREN;
sdi.relativeID = (HSCOPEITEM)parent;
sdi.nImage = children[n]->GetBitmapIndex();
sdi.nOpenImage = INDEX_OPENFOLDER;
sdi.displayname = MMC_CALLBACK;
sdi.lParam = (LPARAM)children[n]; // The cookie
sdi.cChildren = 0;
HRESULT hr = pConsoleNameSpace->InsertItem( &sdi );
_ASSERT( SUCCEEDED(hr) );
children[n]->SetHandle((HANDLE)sdi.ID);
}
}
return S_OK;
}
//==============================================================
//
// CSpaceStation implementation
//
//
CSpaceStation::CSpaceStation() : m_cChildSpaceStations(0)
{
for (int n = 0; n < MAX_CHILDREN; n++) {
children[n] = NULL;
}
for (n = 0; n < NUMBER_OF_CHILDREN; n++) {
children[n] = new CRocket(this, _T("Rocket"), n, 350115, 320, 52300);
}
}
CSpaceStation::~CSpaceStation()
{
for (int n = 0; n < MAX_CHILDREN; n++)
if (children[n]) {
delete children[n];
}
}
HRESULT CSpaceStation::Expand(IConsoleNameSpace *pConsoleNameSpace)
{
//Expand the CSpaceStation if necessary.
//This method is called by the object's OnPaste method during paste operations.
HRESULT hr = S_FALSE;
//First, need the IConsoleNameSpace2 interface to call Expand.
IConsoleNameSpace2 *pConsoleNamespace2 = NULL;
hr = pConsoleNameSpace->QueryInterface(IID_IConsoleNameSpace2, (void **)&pConsoleNamespace2);
_ASSERT( SUCCEEDED(hr) );
hr = pConsoleNamespace2->Expand((HSCOPEITEM)GetHandle());
pConsoleNamespace2->Release();
return hr;
}
HRESULT CSpaceStation::GetResultViewType(LPOLESTR *ppViewType, long *pViewOptions)
{
return S_FALSE;
}
HRESULT CSpaceStation::OnShow(IConsole *pConsole, BOOL bShow, HSCOPEITEM scopeitem)
{
HRESULT hr = S_OK;
IHeaderCtrl *pHeaderCtrl = NULL;
IResultData *pResultData = NULL;
if (bShow) {
hr = pConsole->QueryInterface(IID_IHeaderCtrl, (void **)&pHeaderCtrl);
_ASSERT( SUCCEEDED(hr) );
hr = pConsole->QueryInterface(IID_IResultData, (void **)&pResultData);
_ASSERT( SUCCEEDED(hr) );
// Set the column headers in the results pane
hr = pHeaderCtrl->InsertColumn( 0, L"Rocket Class", 0, MMCLV_AUTO );
_ASSERT( S_OK == hr );
hr = pHeaderCtrl->InsertColumn( 1, L"Rocket Weight", 0, MMCLV_AUTO );
_ASSERT( S_OK == hr );
hr = pHeaderCtrl->InsertColumn( 2, L"Rocket Height", 0, MMCLV_AUTO );
_ASSERT( S_OK == hr );
hr = pHeaderCtrl->InsertColumn( 3, L"Rocket Payload", 0, MMCLV_AUTO );
_ASSERT( S_OK == hr );
hr = pHeaderCtrl->InsertColumn( 4, L"Status", 0, MMCLV_AUTO );
_ASSERT( S_OK == hr );
// insert items here
RESULTDATAITEM rdi;
hr = pResultData->DeleteAllRsltItems();
_ASSERT( SUCCEEDED(hr) );
if (!bExpanded) {
// create the child nodes, then expand them
for (int n = 0; n < MAX_CHILDREN; n++) {
if (NULL == children[n])
//No more children to insert, so exit for loop
break;
BOOL childDeleteStatus = children[n]->getDeletedStatus();
if ( !childDeleteStatus) {
ZeroMemory(&rdi, sizeof(RESULTDATAITEM) );
rdi.mask = RDI_STR | // Displayname is valid
RDI_IMAGE |
RDI_PARAM; // nImage is valid
rdi.nImage = children[n]->GetBitmapIndex();
rdi.str = MMC_CALLBACK;
rdi.nCol = 0;
rdi.lParam = (LPARAM)children[n];
hr = pResultData->InsertItem( &rdi );
_ASSERT( SUCCEEDED(hr) );
children[n]->SetHandle((HANDLE)rdi.itemID);
}
}
}
pHeaderCtrl->Release();
pResultData->Release();
}
return hr;
}
HRESULT CSpaceStation::OnSelect(IConsole *pConsole, BOOL bScope, BOOL bSelect)
{
IConsoleVerb *pConsoleVerb;
HRESULT hr = pConsole->QueryConsoleVerb(&pConsoleVerb);
_ASSERT(SUCCEEDED(hr));
hr = pConsoleVerb->SetVerbState(MMC_VERB_CUT, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_CUT, HIDDEN, FALSE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_COPY, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_COPY, HIDDEN, FALSE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_DELETE, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_DELETE, HIDDEN, FALSE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_PASTE, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_PASTE, HIDDEN, FALSE);
pConsoleVerb->Release();
return S_OK;
}
HRESULT CSpaceStation::OnPaste(IConsole *pConsole, CComponentData *pComponentData, CDelegationBase *pPasted)
{
CRocket *pRocket = dynamic_cast<CRocket *>(pPasted);
HRESULT hr = S_OK;
if (NULL == pRocket)
{
// See if this is CSpaceStation, if so paste it into this item.
// This sample simply creates a new CSpaceStation
// and inserts it as a child of the destination of the paste.
// It does not paste the cut/copied CSpaceStation and the
// current state of its result items.
CSpaceStation* pSpaceStn = dynamic_cast<CSpaceStation*>(pPasted);
if ( (NULL != pSpaceStn) &&
(pSpaceStn != this) )
{
// Regardless of whether this item is expanded or not
// always try to expand this scopeitem (so that paste can
// succeed).
hr = Expand(pComponentData->GetConsoleNameSpace());
CSpaceStation* pNewStation = new CSpaceStation();
SCOPEDATAITEM sdi;
ZeroMemory(&sdi, sizeof(SCOPEDATAITEM) );
sdi.mask = SDI_STR| // Displayname is valid
SDI_PARAM | // lParam is valid
SDI_IMAGE | // nImage is valid
SDI_OPENIMAGE | // nOpenImage is valid
SDI_PARENT |
SDI_CHILDREN;
sdi.relativeID = (HSCOPEITEM)GetHandle();
sdi.nImage = pNewStation->GetBitmapIndex();
sdi.nOpenImage = INDEX_OPENFOLDER;
sdi.displayname = MMC_CALLBACK;
sdi.lParam = (LPARAM)pNewStation; // The cookie
sdi.cChildren = 0;
hr = pComponentData->GetConsoleNameSpace()->InsertItem( &sdi );
_ASSERT( SUCCEEDED(hr) );
pNewStation->SetHandle((HANDLE)sdi.ID);
}
//increment count of child space stations
m_cChildSpaceStations++;
return hr;
}
if (pRocket->m_pSpaceStation == this)
return S_FALSE;
//Create a new CRocket for the destination CSpaceStation
CRocket *myRocket = new CRocket(pRocket->m_pSpaceStation, pRocket->szName, pRocket->nId,
pRocket->lWeight, pRocket->lHeight, pRocket->lPayload);
for (int n = 0; n < MAX_CHILDREN; n++) {
if (NULL == children[n]) {
// put it here
children[n] = myRocket;
children[n]->isDeleted = FALSE;
children[n]->nId = n;
children[n]->m_pSpaceStation = this;
return S_OK;
}
}
return S_FALSE;
}
HRESULT CSpaceStation::OnQueryPaste(CDelegationBase *pPasted)
{
CRocket *pRocket = dynamic_cast<CRocket *>(pPasted);
if (NULL == pRocket)
{
// See if this is CSpaceStation.
CSpaceStation* pSpaceStn = dynamic_cast<CSpaceStation*>(pPasted);
if ( (NULL != pSpaceStn) &&
(pSpaceStn != this) )
{
return S_OK;
}
return S_FALSE;
}
if (pRocket->m_pSpaceStation != this)
for (int n = 0; n < MAX_CHILDREN; n++) {
if (NULL == children[n]) {
return S_OK;
}
}
return S_FALSE;
}
HRESULT CSpaceStation::OnUpdateItem(IConsole *pConsole, long item, ITEM_TYPE itemtype)
{
HRESULT hr = S_OK;
_ASSERT(item);
_ASSERT(SCOPE == itemtype);
//refresh all result pane views
hr = pConsole->SelectScopeItem( (HSCOPEITEM)item );
_ASSERT( S_OK == hr);
return hr;
}
HRESULT CSpaceStation::OnDeleteScopeItem (IConsoleNameSpace *pConsoleNameSpace)
{
HRESULT hr = S_FALSE;
HSCOPEITEM hCutItem = (HSCOPEITEM)GetHandle();
//Get handle and cookie of parent scope item. We need these to
//remove the "+" sign if the parent's m_cChildSpaceStations goes to zero.
HSCOPEITEM hParentItem;
MMC_COOKIE cookieParentItem;
HRESULT hr1 = pConsoleNameSpace->GetParentItem(hCutItem, &hParentItem,
(long *)&cookieParentItem);
//Delete the cut item
hr = pConsoleNameSpace->DeleteItem(hCutItem, TRUE);
_ASSERT(S_OK == hr);
if (SUCCEEDED(hr1))
{
//Decrement parent's m_cChildSpaceStations count and
//remove "+" sign if necessary
CSpaceStation* pParentSpaceStn = reinterpret_cast<CSpaceStation*>(cookieParentItem);
pParentSpaceStn->DecrementCountChildSpaceStations();
if ( !pParentSpaceStn->GetCountChildSpaceStations() )
{
SCOPEDATAITEM sdi;
ZeroMemory(&sdi, sizeof(SCOPEDATAITEM) );
sdi.mask = SDI_CHILDREN; //cChildren is valid
sdi.ID = (HSCOPEITEM)hParentItem;
sdi.cChildren = 0;
hr = pConsoleNameSpace->SetItem( &sdi );
_ASSERT( SUCCEEDED(hr) );
}
}
return hr;
}
//==============================================================
//
// CRocket implementation
//
//
CRocket::CRocket(CSpaceStation *pSpaceStation, _TCHAR *szName, int id, LONG lWeight, LONG lHeight, LONG lPayload)
: m_pSpaceStation(pSpaceStation), szName(NULL), lWeight(0), lHeight(0), lPayload(0), iStatus(STOPPED)
{
if (szName) {
this->szName = new _TCHAR[(_tcslen(szName) + 1) * sizeof(_TCHAR)];
_tcscpy(this->szName, szName);
}
this->nId = id;
this->lWeight = lWeight;
this->lHeight = lHeight;
this->lPayload = lPayload;
isDeleted = FALSE;
}
CRocket::~CRocket()
{
if (szName)
delete [] szName;
}
const _TCHAR *CRocket::GetDisplayName(int nCol)
{
static _TCHAR buf[128];
switch (nCol) {
case 0:
_stprintf(buf, _T("%s (#%d)"), szName ? szName : _T(""), nId);
break;
case 1:
_stprintf(buf, _T("%ld metric tons"), lWeight);
break;
case 2:
_stprintf(buf, _T("%ld meters"), lHeight);
break;
case 3:
_stprintf(buf, _T("%ld kilos"), lPayload);
break;
case 4:
_stprintf(buf, _T("%s"),
iStatus == RUNNING ? _T("running") :
iStatus == PAUSED ? _T("paused") :
iStatus == STOPPED ? _T("stopped") : _T("unknown"));
break;
}
return buf;
}
HRESULT CRocket::OnSelect(IConsole *pConsole, BOOL bScope, BOOL bSelect)
{
IConsoleVerb *pConsoleVerb;
HRESULT hr = pConsole->QueryConsoleVerb(&pConsoleVerb);
_ASSERT(SUCCEEDED(hr));
hr = pConsoleVerb->SetVerbState(MMC_VERB_RENAME, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_CUT, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_COPY, ENABLED, TRUE);
hr = pConsoleVerb->SetVerbState(MMC_VERB_DELETE, ENABLED, TRUE);
pConsoleVerb->Release();
return S_OK;
}
HRESULT CRocket::OnRefresh(IConsole *pConsole)
{
//Call IConsole::UpdateAllViews to redraw all views
//owned by the parent scope item
IDataObject *pDummy = NULL;
HANDLE handle = m_pSpaceStation->GetHandle();
HRESULT hr;
hr = pConsole->UpdateAllViews(pDummy, (long)handle, UPDATE_SCOPEITEM);
_ASSERT( S_OK == hr);
return hr;
}
HRESULT CRocket::OnDelete(IConsole *pConsole)
{
_ASSERT( NULL != this );
HRESULT hr = S_OK;
//Delete the item. The IConsole that is passed into DeleteChild
//is from the child result item, so we can use it to QI for IResultData
IResultData *pResultData = NULL;
hr = pConsole->QueryInterface(IID_IResultData, (void **)&pResultData);
_ASSERT( SUCCEEDED(hr) );
HRESULTITEM childresultitem;
_ASSERT( NULL != &childresultitem );
//lparam == this. See CSpaceStation::OnShow
hr = pResultData->FindItemByLParam( (LPARAM)this, &childresultitem );
_ASSERT( SUCCEEDED(hr) );
hr = pResultData->DeleteItem( childresultitem, 0 );
_ASSERT( SUCCEEDED(hr) );
pResultData->Release();
//Now set child's isDeleted member to true so that the parent doesn't try to
//to insert it again in CSpaceVehicle::OnShow. Admittedly, a hack...
isDeleted = TRUE;
return hr;
}
HRESULT CRocket::OnRename(LPOLESTR pszNewName)
{
HRESULT hr = S_FALSE;
if (szName) {
delete [] szName;
szName = NULL;
}
MAKE_TSTRPTR_FROMWIDE(ptrname, pszNewName);
szName = new _TCHAR[(_tcslen(ptrname) + 1) * sizeof(_TCHAR)];
_tcscpy(szName, ptrname);
return hr;
}
HRESULT CRocket::OnUpdateItem(IConsole *pConsole, long item, ITEM_TYPE itemtype)
{
HRESULT hr = S_FALSE;
_ASSERT(NULL != this || isDeleted || RESULT == itemtype);
//redraw the item
IResultData *pResultData = NULL;
hr = pConsole->QueryInterface(IID_IResultData, (void **)&pResultData);
_ASSERT( SUCCEEDED(hr) );
HRESULTITEM myhresultitem;
_ASSERT(NULL != &myhresultitem);
//lparam == this. See CSpaceStation::OnShow
hr = pResultData->FindItemByLParam( (LPARAM)this, &myhresultitem );
if ( FAILED(hr) ) {
//there is no HRESULTITEM for the item, because
//the item is not inserted in the current view. Exit gracefully
hr = S_FALSE;
} else
{
hr = pResultData->UpdateItem( myhresultitem );
_ASSERT( SUCCEEDED(hr) );
}
pResultData->Release();
return hr;
}