//**********************************************************************
// File name: DOC.CPP
//
//      Implementation file for CSimpleDoc.
//
// Functions:
//
//      See DOC.H for Class Definition
//
// Copyright (c) 1992 - 1993 Microsoft Corporation. All rights reserved.
//**********************************************************************

#include "pre.h"
#include "iocs.h"
#include "ias.h"
#include "ioipf.h"
#include "ioips.h"
#include "app.h"
#include "site.h"
#include "doc.h"

//**********************************************************************
//
// CSimpleDoc::Create
//
// Purpose:
//
//      Creation for the CSimpleDoc Class
//
// Parameters:
//
//      CSimpleApp FAR * lpApp  -   Pointer to the CSimpleApp Class
//
//      LPRECT lpRect           -   Client area rect of "frame" window
//
//      HWND hWnd               -   Window Handle of "frame" window
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                    Location
//
//      StgCreateDocfile            OLE API
//      CreateWindow                Windows API
//      ShowWindow                  Windows API
//      UpdateWindow                Windows API
//      EnableMenuItem              Windows API
//
// Comments:
//
//      This routine was added so that failure could be returned
//      from object creation.
//
//********************************************************************

CSimpleDoc FAR * CSimpleDoc::Create(CSimpleApp FAR *lpApp, LPRECT lpRect,
                                    HWND hWnd)
{
    CSimpleDoc FAR * lpTemp = new CSimpleDoc(lpApp, hWnd);

    if (!lpTemp)
        return NULL;

    // create storage for the doc.
    HRESULT hErr = StgCreateDocfile (NULL,
                                     STGM_READWRITE | STGM_TRANSACTED |
                                     STGM_SHARE_EXCLUSIVE,
                                     0, &lpTemp->m_lpStorage);

    if (hErr != NOERROR)
        goto error;

    // create the document Window
    lpTemp->m_hDocWnd = CreateWindow(
            TEXT("SimpCntrDocWClass"),
            NULL,
            WS_CHILD | WS_CLIPCHILDREN,
            lpRect->left,
            lpRect->top,
            lpRect->right,
            lpRect->bottom,
            hWnd,
            NULL,
            lpApp->m_hInst,
            NULL);

    if (!lpTemp->m_hDocWnd)
        goto error;

    ShowWindow(lpTemp->m_hDocWnd, SW_SHOWNORMAL);  // Show the window
    UpdateWindow(lpTemp->m_hDocWnd);               // Sends WM_PAINT message

    // Ensable InsertObject menu choice
    EnableMenuItem( lpTemp->m_hEditMenu, 0, MF_BYPOSITION | MF_ENABLED);

    // we will add one ref count on our document. later in CSimpleDoc::Close
    // we will release this  ref count. when the document's ref count goes
    // to 0, the document will be deleted.
    lpTemp->AddRef();

    return (lpTemp);

error:
    delete (lpTemp);
    return NULL;

}

//**********************************************************************
//
// CSimpleDoc::Close
//
// Purpose:
//
//      Close CSimpleDoc object.
//      when the document's reference count goes to 0, the document
//      will be destroyed.
//
// Parameters:
//      None
//
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                    Location
//
//      CSimpleSite::CloseOleObject SITE.CPP
//      ShowWindow                  Windows API
//      TestDebugOut           Windows API
//
//
//********************************************************************

void CSimpleDoc::Close(void)
{
    TestDebugOut(TEXT("In CSimpleDoc::Close\r\n"));

    ShowWindow(m_hDocWnd, SW_HIDE);  // Hide the window

    // Close the OLE object in our document
    if (m_lpSite)
    	m_lpSite->CloseOleObject();

    // Release the ref count added in CSimpleDoc::Create. this will make
    // the document's ref count go to 0, and the document will be deleted.
    Release();
}

//**********************************************************************
//
// CSimpleDoc::CSimpleDoc
//
// Purpose:
//
//      Constructor for the CSimpleDoc Class
//
// Parameters:
//
//      CSimpleApp FAR * lpApp  -   Pointer to the CSimpleApp Class
//
//      HWND hWnd               -   Window Handle of "frame" window
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                    Location
//
//      TestDebugOut           Windows API
//      GetMenu                     Windows API
//      GetSubMenu                  Windows API
//
//
//********************************************************************

CSimpleDoc::CSimpleDoc(CSimpleApp FAR * lpApp,HWND hWnd)
{
    TestDebugOut(TEXT("In CSimpleDoc's Constructor\r\n"));
    m_lpApp = lpApp;
    m_lpSite = NULL;
    m_nCount = 0;
    // set up menu handles
    m_hMainMenu = GetMenu(hWnd);
    m_hFileMenu = GetSubMenu(m_hMainMenu, 0);
    m_hEditMenu = GetSubMenu(m_hMainMenu, 1);
    m_hHelpMenu = GetSubMenu(m_hMainMenu, 2);
    m_hCascadeMenu = NULL;

    m_lpActiveObject = NULL;

    // flags
    m_fInPlaceActive = FALSE;
    m_fAddMyUI = FALSE;
    m_fModifiedMenu = FALSE;
}

//**********************************************************************
//
// CSimpleDoc::~CSimpleDoc
//
// Purpose:
//
//      Destructor for CSimpleDoc
//
// Parameters:
//
//      None
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                     Location
//
//      TestDebugOut            Windows API
//      CSimpleSite::UnloadOleObject SITE.CPP
//      CSimpleSite::Release         SITE.CPP
//      IStorage::Release            OLE API
//      GetMenuItemCount             Windows API
//      RemoveMenu                   Windows API
//      DestroyMenu                  Windows API
//      DestroyWindows               Windows API
//
//
//********************************************************************

CSimpleDoc::~CSimpleDoc()
{
    TestDebugOut(TEXT("In CSimpleDoc's Destructor\r\n"));

    // Release all pointers we hold to the OLE object. also release
    // the ref count added in CSimpleSite::Create. this will make
    // the Site's ref count go to 0, and the Site will be deleted.
    if (m_lpSite)
    {
      m_lpSite->UnloadOleObject();
    	m_lpSite->Release();
    	m_lpSite = NULL;
    }

    // Release the Storage
    if (m_lpStorage)
    {
        m_lpStorage->Release();
        m_lpStorage = NULL;
    }

    // if the edit menu was modified, remove the menu item and
    // destroy the popup if it exists
    if (m_fModifiedMenu)
    {
        int nCount = GetMenuItemCount(m_hEditMenu);
        RemoveMenu(m_hEditMenu, nCount-1, MF_BYPOSITION);
        if (m_hCascadeMenu)
            DestroyMenu(m_hCascadeMenu);
    }

    DestroyWindow(m_hDocWnd);
}


//**********************************************************************
//
// CSimpleDoc::QueryInterface
//
// Purpose:
//
//      interface negotiation at document level
//
// Parameters:
//
//      REFIID riid         -   ID of interface to be returned
//      LPVOID FAR* ppvObj  -   Location to return the interface
//
// Return Value:
//
//      E_NOINTERFACE       -   Always
//
// Function Calls:
//      Function                    Location
//
//      TestDebugOut           Windows API
//      ResultFromScode             OLE API
//
// Comments:
//
//      In this implementation, there are no doc level interfaces.
//      In an MDI application, there would be an IOleInPlaceUIWindow
//      associated with the document to provide document level tool
//      space negotiation.
//
//********************************************************************

STDMETHODIMP CSimpleDoc::QueryInterface(REFIID riid, LPVOID FAR* ppvObj)
{
    TestDebugOut(TEXT("In CSimpleDoc::QueryInterface\r\n"));

    *ppvObj = NULL;     // must set out pointer parameters to NULL

    // Not a supported interface
    return ResultFromScode(E_NOINTERFACE);
}

//**********************************************************************
//
// CSimpleDoc::AddRef
//
// Purpose:
//
//      Increments the document reference count
//
// Parameters:
//
//      None
//
// Return Value:
//
//      UINT    -   The new reference count of CSimpleDoc
//
// Function Calls:
//      Function                    Location
//
//      TestDebugOut           Windows API
//
//
//********************************************************************

STDMETHODIMP_(ULONG) CSimpleDoc::AddRef()
{
    TestDebugOut(TEXT("In CSimpleDoc::AddRef\r\n"));
    return ++m_nCount;
}

//**********************************************************************
//
// CSimpleDoc::Release
//
// Purpose:
//
//      Decrements the document reference count
//
// Parameters:
//
//      None
//
// Return Value:
//
//      UINT    -   The new reference count of CSimpleDoc
//
// Function Calls:
//      Function                    Location
//
//      TestDebugOut           Windows API
//
//
//********************************************************************

STDMETHODIMP_(ULONG) CSimpleDoc::Release()
{
    TestDebugOut(TEXT("In CSimpleDoc::Release\r\n"));

    if (--m_nCount == 0)
    {
        delete this;
        return 0;
    }
    return m_nCount;
}

//**********************************************************************
//
// CSimpleDoc::InsertObject
//
// Purpose:
//
//      Inserts a new object to this document
//
// Parameters:
//
//      None
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                         Location
//
//      CSimpleSite::CSimpleSite         SITE.CPP
//      CSimpleSite::InitObject          SITE.CPP
//      CSimpleSite::Release             SITE.CPP
//      memset                           C Runtime
//      OleUIInsertObject                OLE2UI function
//      CSimpleDoc::DisableInsertObject  DOC.CPP
//      IStorage::Revert                 OLE API
//
// Comments:
//
//      This implementation only allows one object to be inserted
//      into a document.  Once the object has been inserted, then
//      the Insert Object menu choice is greyed out, to prevent
//      the user from inserting another.
//
//********************************************************************

void CSimpleDoc::InsertObject()
{
    OLEUIINSERTOBJECT io;
    UINT iret;
    TCHAR szFile[OLEUI_CCHPATHMAX];

    m_lpSite = CSimpleSite::Create(this);

    if (!m_lpSite)
    {
       /* memory allocation problem! cannot carry on.
        */
       TestDebugOut(TEXT("Memory allocation error!\n"));
       return;
    }

    // clear the structure
    _fmemset(&io, 0, sizeof(OLEUIINSERTOBJECT));

    // fill the structure
    io.cbStruct = sizeof(OLEUIINSERTOBJECT);
    io.dwFlags = IOF_SELECTCREATENEW      | IOF_DISABLELINK     |
                 IOF_DISABLEDISPLAYASICON | IOF_CREATENEWOBJECT |
                 IOF_CREATEFILEOBJECT;
    io.hWndOwner = m_hDocWnd;
    io.lpszCaption = (LPTSTR) TEXT("Insert Object");
    io.iid = IID_IOleObject;
    io.oleRender = OLERENDER_DRAW;
    io.lpIOleClientSite = &m_lpSite->m_OleClientSite;
    io.lpIStorage = m_lpSite->m_lpObjStorage;
    io.ppvObj = (LPVOID FAR *)&m_lpSite->m_lpOleObject;
    io.lpszFile = szFile;
    io.cchFile = sizeof(szFile)/sizeof(TCHAR);
                            // cchFile is the number of characters of szFile
    _fmemset((LPTSTR)szFile, 0, sizeof(szFile));

    // call OUTLUI to do all the hard work
    iret = OleUIInsertObject(&io);

    if (iret == OLEUI_OK)
    {
        m_lpSite->InitObject((BOOL)(io.dwFlags & IOF_SELECTCREATENEW));
        // disable Insert Object menu item
        DisableInsertObject();
    }
    else
    {
        m_lpSite->Release();
        m_lpSite = NULL;
        m_lpStorage->Revert();
    }

}

//**********************************************************************
//
// CSimpleDoc::lResizeDoc
//
// Purpose:
//
//      Resizes the document
//
// Parameters:
//
//      LPRECT lpRect   -   The size of the client are of the "frame"
//                          Window.
//
// Return Value:
//
//      NULL
//
// Function Calls:
//      Function                                Location
//
//      IOleInPlaceActiveObject::ResizeBorder   Object
//      MoveWindow                              Windows API
//
//
//********************************************************************

long CSimpleDoc::lResizeDoc(LPRECT lpRect)
{
    // if we are InPlace, then call ResizeBorder on the object, otherwise
    // just move the document window.
    if (m_fInPlaceActive)
        m_lpActiveObject->ResizeBorder(lpRect, &m_lpApp->m_OleInPlaceFrame,
                                       TRUE);
    else
        MoveWindow(m_hDocWnd, lpRect->left, lpRect->top, lpRect->right,
                   lpRect->bottom, TRUE);

    return NULL;
}

//**********************************************************************
//
// CSimpleDoc::lAddVerbs
//
// Purpose:
//
//      Adds the objects verbs to the edit menu.
//
// Parameters:
//
//      None
//
// Return Value:
//
//      NULL
//
// Function Calls:
//      Function                    Location
//
//      GetMenuItemCount            Windows API
//      OleUIAddVerbMenu            OLE2UI function
//
//
//********************************************************************

long CSimpleDoc::lAddVerbs(void)
{
    // m_fModifiedMenu is TRUE if the menu has already been modified
    // once.  Since we only support one obect every time the application
    // is run, then once the menu is modified, it doesn't have
    // to be done again.
    if (m_lpSite && !m_fInPlaceActive  && !m_fModifiedMenu)
    {
        int nCount = GetMenuItemCount(m_hEditMenu);

        if (!OleUIAddVerbMenu ( m_lpSite->m_lpOleObject,
                           NULL,
                           m_hEditMenu,
                           nCount + 1,
                           IDM_VERB0,
                           0,           // no maximum verb IDM enforced
                           FALSE,
                           0,
                           &m_hCascadeMenu))
        {
           TestDebugOut(TEXT("Fail in OleUIAddVerbMenu"));
        }

        m_fModifiedMenu = TRUE;
    }
    return (NULL);
}

//**********************************************************************
//
// CSimpleDoc::PaintDoc
//
// Purpose:
//
//      Paints the Document
//
// Parameters:
//
//      HDC hDC -   hDC of the document Window
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                    Location
//
//      CSimpleSite::PaintObj       SITE.CPP
//
//
//********************************************************************

void CSimpleDoc::PaintDoc (HDC hDC)
{
    // if we supported multiple objects, then we would enumerate
    // the objects and call paint on each of them from here.

    if (m_lpSite)
        m_lpSite->PaintObj(hDC);

}

//**********************************************************************
//
// CSimpleDoc::DisableInsertObject
//
// Purpose:
//
//      Disable the ability to insert a new object in this document.
//
// Parameters:
//
//      None
//
// Return Value:
//
//      None
//
// Function Calls:
//      Function                    Location
//
//      EnableMenuItem              Windows API
//
// Comments:
//
//      This implementation only allows one object to be inserted
//      into a document.  Once the object has been inserted, then
//      the Insert Object menu choice is greyed out, to prevent
//      the user from inserting another.
//
//********************************************************************

void CSimpleDoc::DisableInsertObject(void)
{
    // Disable InsertObject menu choice
    EnableMenuItem( m_hEditMenu, 0, MF_BYPOSITION | MF_DISABLED | MF_GRAYED);
}