Leaked source code of windows server 2003
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/*
* d o c h o s t . c p p
*
* Purpose:
* basic implementation of a docobject host. Used by the body class to
* host Trident and/or MSHTML
*
* History
* August '96: brettm - created
*
* Copyright (C) Microsoft Corp. 1995, 1996.
*/
#include "pch.hxx"
#include <resource.h>
#include "globals.h"
#include "dochost.h"
/*
* m a c r o s
*/
/*
* c o n s t a n t s
*/
static CHAR c_szDocHostWndClass[] = "MEPAD_DocHost";
/*
* t y p e d e f s
*/
/*
* g l o b a l s
*/
/*
* f u n c t i o n p r o t y p e s
*/
/*
* f u n c t i o n s
*/
HRESULT HrInitNew(LPUNKNOWN pUnk)
{
LPPERSISTSTREAMINIT ppsi=0;
HRESULT hr;
if (!pUnk)
return E_INVALIDARG;
hr=pUnk->QueryInterface(IID_IPersistStreamInit, (LPVOID *)&ppsi);
if (FAILED(hr))
goto error;
hr = ppsi->InitNew();
error:
ReleaseObj(ppsi);
return hr;
}
CDocHost::CDocHost()
{
/*
Not initialised
Member: Initialised In:
--------------------+---------------------------
*/
m_cRef=1;
m_hwnd=0;
m_pDocView=0;
m_lpOleObj=0;
m_pCmdTarget=0;
m_ulAdviseConnection=0;
m_hwndDocObj=NULL;
m_fUIActive=FALSE;
m_fFocus=FALSE;
m_fDownloading=FALSE;
m_dhbBorder=dhbNone;
m_fCycleFocus=FALSE;
m_pInPlaceActiveObj = NULL;
m_dwFrameWidth = 0;
m_dwFrameHeight = 0;
m_pInPlaceFrame =0;
}
CDocHost::~CDocHost()
{
SafeRelease(m_pInPlaceFrame);
SafeRelease(m_pCmdTarget);
SafeRelease(m_lpOleObj);
SafeRelease(m_pDocView);
SafeRelease(m_pInPlaceActiveObj);
HrCloseDocObj();
}
ULONG CDocHost::AddRef()
{
return ++m_cRef;
}
ULONG CDocHost::Release()
{
if (--m_cRef==0)
{
delete this;
return 0;
}
return m_cRef;
}
HRESULT CDocHost::QueryInterface(REFIID riid, LPVOID *lplpObj)
{
if(!lplpObj)
return E_INVALIDARG;
*lplpObj = NULL; // set to NULL, in case we fail.
if (IsEqualIID(riid, IID_IUnknown))
*lplpObj = (LPVOID)(LPUNKNOWN)(LPOLEINPLACEFRAME)this;
else if (IsEqualIID(riid, IID_IOleInPlaceSite))
*lplpObj = (LPVOID)(LPOLEINPLACESITE)this;
else if (IsEqualIID(riid, IID_IOleClientSite))
*lplpObj = (LPVOID)(LPOLECLIENTSITE)this;
else if (IsEqualIID(riid, IID_IOleControlSite))
*lplpObj = (LPVOID)(IOleControlSite *)this;
else if (IsEqualIID(riid, IID_IAdviseSink))
*lplpObj = (LPVOID)(LPADVISESINK)this;
else if (IsEqualIID(riid, IID_IOleDocumentSite))
*lplpObj = (LPVOID)(LPOLEDOCUMENTSITE)this;
// BUG BUGB
// I don't think we need to provide this, here for debugging for now
// brettm
else if (IsEqualIID(riid, IID_IOleCommandTarget))
*lplpObj = (LPVOID)(LPOLECOMMANDTARGET)this;
else if (IsEqualIID(riid, IID_IServiceProvider))
*lplpObj = (LPVOID)(LPSERVICEPROVIDER)this;
else
return E_NOINTERFACE;
AddRef();
return NOERROR;
}
LRESULT CALLBACK CDocHost::ExtWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
LPDOCHOST pDocHost;
if(msg==WM_CREATE)
{
pDocHost=(CDocHost *)((LPMDICREATESTRUCT)((LPCREATESTRUCT)lParam)->lpCreateParams)->lParam;
if(!pDocHost)
return -1;
if(!pDocHost->WMCreate(hwnd))
return -1;
}
pDocHost = (LPDOCHOST)GetWndThisPtr(hwnd);
if(pDocHost)
return pDocHost->WndProc(hwnd, msg, wParam, lParam);
else
return DefMDIChildProc(hwnd, msg, wParam, lParam);
}
LRESULT CDocHost::WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_MDIACTIVATE:
// if lParam is our HWND we're being activated, else deactivated
if (m_pInPlaceActiveObj)
m_pInPlaceActiveObj->OnDocWindowActivate((HWND)lParam == m_hwnd);
break;
case WM_DESTROY:
HrCloseDocObj();
break;
case WM_SETFOCUS:
if(m_pDocView)
m_pDocView->UIActivate(TRUE);
break;
case WM_SIZE:
WMSize(LOWORD(lParam), HIWORD(lParam));
return 0;
case WM_NCDESTROY:
WMNCDestroy();
break;
}
return DefMDIChildProc(hwnd, msg, wParam, lParam);
}
void CDocHost::WMNCDestroy()
{
SetWindowLong(m_hwnd, GWL_USERDATA, NULL);
m_hwnd = NULL;
Release();
}
BOOL CDocHost::WMCreate(HWND hwnd)
{
m_hwnd = hwnd;
SetWindowLong(hwnd, GWL_USERDATA, (LPARAM)this);
AddRef();
return SUCCEEDED(HrSubWMCreate())?TRUE:FALSE;
}
HRESULT CDocHost::HrCreateDocObj(LPCLSID pCLSID)
{
HRESULT hr=NOERROR;
if(!pCLSID)
return E_INVALIDARG;
hr = CoCreateInstance(*pCLSID, NULL, CLSCTX_INPROC_SERVER|CLSCTX_INPROC_HANDLER,
IID_IOleObject, (LPVOID *)&m_lpOleObj);
if (FAILED(hr))
{
MessageBox(m_hwnd, "MEPAD", "Failed to create DocObj", MB_OK);
goto error;
}
hr = m_lpOleObj->SetClientSite((LPOLECLIENTSITE)this);
if (FAILED(hr))
goto error;
hr = m_lpOleObj->Advise((LPADVISESINK)this, &m_ulAdviseConnection);
if (FAILED(hr))
goto error;
hr = m_lpOleObj->QueryInterface(IID_IOleCommandTarget, (LPVOID *)&m_pCmdTarget);
if (FAILED(hr))
goto error;
hr = HrInitNew(m_lpOleObj);
if (FAILED(hr))
goto error;
error:
return hr;
}
HRESULT CDocHost::HrShow()
{
RECT rc;
HRESULT hr;
GetClientRect(m_hwnd, &rc);
HrGetDocObjSize(&rc);
hr=m_lpOleObj->DoVerb(OLEIVERB_SHOW, NULL, (LPOLECLIENTSITE)this, 0, m_hwnd, &rc);
if(FAILED(hr))
goto error;
ShowWindow(m_hwnd, SW_SHOW);
error:
return hr;
}
HRESULT CDocHost::HrCloseDocObj()
{
LPOLEINPLACEOBJECT pInPlaceObj=0;
SafeRelease(m_pInPlaceFrame);
SafeRelease(m_pCmdTarget);
SafeRelease(m_pInPlaceActiveObj);
if(m_pDocView)
{
m_pDocView->UIActivate(FALSE);
m_pDocView->CloseView(0);
m_pDocView->SetInPlaceSite(NULL);
SafeRelease(m_pDocView);
}
if (m_lpOleObj)
{
if (m_ulAdviseConnection)
{
m_lpOleObj->Unadvise(m_ulAdviseConnection);
m_ulAdviseConnection=NULL;
}
// deactivate the docobj. mshtml seems more sensitive to this than Trident.
if (!FAILED(m_lpOleObj->QueryInterface(IID_IOleInPlaceObject, (LPVOID*)&pInPlaceObj)))
{
pInPlaceObj->InPlaceDeactivate();
pInPlaceObj->Release();
}
// close the ole object, but blow off changes as we have either extracted
// them ourselves or don't care.
m_lpOleObj->Close(OLECLOSE_NOSAVE);
#ifdef DEBUG
ULONG uRef;
uRef=
#endif
m_lpOleObj->Release();
m_lpOleObj=NULL;
}
m_fDownloading=FALSE;
m_fFocus=FALSE;
m_fUIActive=FALSE;
return NOERROR;
}
HRESULT CDocHost::HrInit(HWND hwndParent, int idDlgItem, DWORD dhbBorder)
{
HRESULT hr=S_OK;
HWND hwnd;
WNDCLASS wc={0};
if(!IsWindow(hwndParent))
return E_INVALIDARG;
m_dhbBorder=dhbBorder;
if (!GetClassInfo(g_hInst, c_szDocHostWndClass, &wc))
{
wc.lpfnWndProc = CDocHost::ExtWndProc;
wc.hInstance = g_hInst;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.lpszClassName = c_szDocHostWndClass;
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wc.hIcon = LoadIcon(g_hInst, MAKEINTRESOURCE(idiApp));
wc.style = CS_DBLCLKS;
if(!RegisterClass(&wc))
return E_OUTOFMEMORY;
}
hwnd = CreateMDIWindow(
c_szDocHostWndClass,
"MimeEdit Host",
MDIS_ALLCHILDSTYLES|
WS_CHILD|WS_CLIPCHILDREN|WS_CLIPSIBLINGS|WS_MAXIMIZEBOX|WS_CAPTION|WS_SYSMENU|WS_THICKFRAME,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
hwndParent,
g_hInst,
(LONG)this);
if(!hwnd)
{
hr=E_OUTOFMEMORY;
goto error;
}
error:
return hr;
}
// *** IOleWindow methods ***
HRESULT CDocHost::GetWindow(HWND *phwnd)
{
*phwnd=m_hwnd;
return NOERROR;
}
HRESULT CDocHost::ContextSensitiveHelp(BOOL fEnterMode)
{
return E_NOTIMPL;
}
// *** IOleInPlaceUIWindow methods ***
HRESULT CDocHost::GetBorder(LPRECT lprectBorder)
{
return E_NOTIMPL;
}
HRESULT CDocHost::RequestBorderSpace(LPCBORDERWIDTHS pborderwidths)
{
return NOERROR;
}
HRESULT CDocHost::SetBorderSpace(LPCBORDERWIDTHS lpborderwidths)
{
return NOERROR;
}
HRESULT CDocHost::SetActiveObject(IOleInPlaceActiveObject * pActiveObject, LPCOLESTR lpszObjName)
{
SafeRelease(m_pInPlaceActiveObj);
m_pInPlaceActiveObj=pActiveObject;
if(m_pInPlaceActiveObj)
m_pInPlaceActiveObj->AddRef();
return NOERROR;
}
// **** IOleInPlaceSite methods ****
HRESULT CDocHost::CanInPlaceActivate()
{
return NOERROR;
}
HRESULT CDocHost::OnInPlaceActivate()
{
LPOLEINPLACEACTIVEOBJECT pInPlaceActive=0;
m_lpOleObj->QueryInterface(IID_IOleInPlaceActiveObject, (LPVOID *)&pInPlaceActive);
if(pInPlaceActive)
{
pInPlaceActive->GetWindow(&m_hwndDocObj);
ReleaseObj(pInPlaceActive);
}
return NOERROR;
}
HRESULT CDocHost::OnUIActivate()
{
m_fUIActive=TRUE;
return NOERROR;
}
HRESULT CDocHost::GetWindowContext(IOleInPlaceFrame **ppFrame,
IOleInPlaceUIWindow **ppDoc,
LPRECT lprcPosRect,
LPRECT lprcClipRect,
LPOLEINPLACEFRAMEINFO lpFrameInfo)
{
*ppFrame = (LPOLEINPLACEFRAME)m_pInPlaceFrame;
m_pInPlaceFrame->AddRef();
*ppDoc = (IOleInPlaceUIWindow *)this;
AddRef();
GetClientRect(m_hwnd, lprcClipRect);
GetClientRect(m_hwnd, lprcPosRect);
HrGetDocObjSize(lprcClipRect);
HrGetDocObjSize(lprcPosRect);
lpFrameInfo->fMDIApp = FALSE;
lpFrameInfo->hwndFrame=m_hwnd;
lpFrameInfo->haccel = NULL;
lpFrameInfo->cAccelEntries = 0;
return NOERROR;
}
HRESULT CDocHost::Scroll(SIZE scrollExtent)
{
// the docobject consumes the entireview, so scroll requests
// are meaningless. Return NOERROR to indicate that they're scolled
// into view.
return NOERROR;
}
HRESULT CDocHost::OnUIDeactivate(BOOL fUndoable)
{
m_fUIActive=FALSE;
return S_OK;
}
HRESULT CDocHost::OnInPlaceDeactivate()
{
return S_OK;
}
HRESULT CDocHost::DiscardUndoState()
{
return E_NOTIMPL;
}
HRESULT CDocHost::DeactivateAndUndo()
{
return E_NOTIMPL;
}
HRESULT CDocHost::OnPosRectChange(LPCRECT lprcPosRect)
{
return E_NOTIMPL;
}
// IOleClientSite methods.
HRESULT CDocHost::SaveObject()
{
return E_NOTIMPL;
}
HRESULT CDocHost::GetMoniker(DWORD dwAssign, DWORD dwWhichMoniker, LPMONIKER *ppmnk)
{
return E_NOTIMPL;
}
HRESULT CDocHost::GetContainer(LPOLECONTAINER *ppCont)
{
if(ppCont)
*ppCont=NULL;
return E_NOINTERFACE;
}
HRESULT CDocHost::ShowObject()
{
// always shown.
// $TODO: do we need to restore the browser here if it is
// minimised?
return NOERROR;
}
HRESULT CDocHost::OnShowWindow(BOOL fShow)
{
return E_NOTIMPL;
}
HRESULT CDocHost::RequestNewObjectLayout()
{
return E_NOTIMPL;
}
// IAdviseSink methods
void CDocHost::OnDataChange(FORMATETC *pfetc, STGMEDIUM *pstgmed)
{
}
void CDocHost::OnViewChange(DWORD dwAspect, LONG lIndex)
{
}
void CDocHost::OnRename(LPMONIKER pmk)
{
}
void CDocHost::OnSave()
{
}
void CDocHost::OnClose()
{
}
// IOleDocumentSite
HRESULT CDocHost::ActivateMe(LPOLEDOCUMENTVIEW pViewToActivate)
{
return HrCreateDocView();
}
HRESULT CDocHost::HrCreateDocView()
{
HRESULT hr;
LPOLEDOCUMENT pOleDoc=NULL;
hr=OleRun(m_lpOleObj);
if(FAILED(hr))
goto error;
hr=m_lpOleObj->QueryInterface(IID_IOleDocument, (LPVOID*)&pOleDoc);
if(FAILED(hr))
goto error;
hr=pOleDoc->CreateView(this, NULL,0,&m_pDocView);
if(FAILED(hr))
goto error;
hr=m_pDocView->SetInPlaceSite(this);
if(FAILED(hr))
goto error;
hr=m_pDocView->Show(TRUE);
if(FAILED(hr))
goto error;
error:
ReleaseObj(pOleDoc);
return hr;
}
HRESULT CDocHost::QueryStatus(const GUID *pguidCmdGroup, ULONG cCmds, OLECMD rgCmds[], OLECMDTEXT *pCmdText)
{
ULONG ul;
// BUGBUG: Check IsEqualGUID(*pguidCmdGroup, CGID_ShellDocView) as well
if (!rgCmds)
return E_INVALIDARG;
if (pguidCmdGroup == NULL)
{
for (ul=0;ul<cCmds; ul++)
{
switch (rgCmds[ul].cmdID)
{
case OLECMDID_OPEN:
case OLECMDID_SAVE:
case OLECMDID_PRINT:
rgCmds[ul].cmdf = MSOCMDF_ENABLED;
break;
default:
rgCmds[ul].cmdf = 0;
break;
}
}
/* for now we deal only with status text*/
if (pCmdText)
{
if (!(pCmdText->cmdtextf & OLECMDTEXTF_STATUS))
{
pCmdText->cmdtextf = OLECMDTEXTF_NONE;// is this needed?
pCmdText->cwActual = 0;
return NOERROR;
}
}
return NOERROR;
}
return OLECMDERR_E_UNKNOWNGROUP;
}
HRESULT CDocHost::Exec(const GUID *pguidCmdGroup, DWORD nCmdID, DWORD nCmdExecOpt, VARIANTARG *pvaIn, VARIANTARG *pvaOut)
{
if (pguidCmdGroup == NULL)
{
switch(nCmdID)
{
case OLECMDID_SETDOWNLOADSTATE:
if(pvaIn->vt==VT_I4)
{
m_fDownloading=pvaIn->lVal;
return S_OK;
}
break;
case OLECMDID_UPDATECOMMANDS:
OnUpdateCommands();
break;
case OLECMDID_SETPROGRESSPOS:
// when done downloading trident now hits us with a
// setprogresspos == -1 to indicate we should remove the "Done"
if (pvaIn->lVal == -1)
m_pInPlaceFrame->SetStatusText(NULL);
return S_OK;
case OLECMDID_SETPROGRESSTEXT:
if(pvaIn->vt == (VT_BSTR))
m_pInPlaceFrame->SetStatusText((LPCOLESTR)pvaIn->bstrVal);
return S_OK;
}
}
return OLECMDERR_E_UNKNOWNGROUP;
}
void CDocHost::WMSize(int cxBody, int cyBody)
{
RECT rc={0};
if(m_pDocView)
{
rc.bottom=cyBody;
rc.right=cxBody;
// give the subclass a chance to override the size of the
// docobj
HrGetDocObjSize(&rc);
m_pDocView->SetRect(&rc);
}
// notify the subclass of a wmsize
OnWMSize(&rc);
}
HRESULT CDocHost::QueryService(REFGUID guidService, REFIID riid, LPVOID *ppvObject)
{
return E_UNEXPECTED;
}
HRESULT CDocHost::HrSubWMCreate()
{
return NOERROR;
}
HRESULT CDocHost::OnControlInfoChanged()
{
return E_NOTIMPL;
}
HRESULT CDocHost::LockInPlaceActive(BOOL fLock)
{
return E_NOTIMPL;
}
HRESULT CDocHost::GetExtendedControl(LPDISPATCH *ppDisp)
{
if (ppDisp)
*ppDisp=NULL;
return E_NOTIMPL;
}
HRESULT CDocHost::TransformCoords(POINTL *pPtlHimetric, POINTF *pPtfContainer,DWORD dwFlags)
{
return E_NOTIMPL;
}
/*
* this is a little trippy, so bear with me. When we get a tab, and trident is UIActive we always pass it off to them
* if it tabs off the end of its internal tab order (a list of urls for instance) then we get hit with a VK_TAB in our
* IOleControlSite::TranslateAccel. If so then we set m_fCycleFocus to TRUE and return S_OK to indicate we took the tab
* tridents IOIPAO::TranslateAccel returns S_OK to indicate it snagged the TAB, we then detect if we set cyclefocus to true
* there and if so, we return S_FALSE from CBody::HrTranslateAccel to indicate to the browser that we didn't take it and it
* move the focus on
*
*/
HRESULT CDocHost::TranslateAccelerator(LPMSG lpMsg, DWORD grfModifiers)
{
if (lpMsg->message == WM_KEYDOWN && lpMsg->wParam == VK_TAB)
{
m_fCycleFocus=TRUE;
return S_OK;
}
return E_NOTIMPL;
}
HRESULT CDocHost::OnFocus(BOOL fGotFocus)
{
m_fFocus = fGotFocus;
return S_OK;
}
HRESULT CDocHost::ShowPropertyFrame(void)
{
return E_NOTIMPL;
}