pages.cpp

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 *  None
 */

void CPages::RectSet(LPRECT pRect, BOOL fNotify)
    {
    UINT        cx, cy;

    if (NULL==pRect)
        return;

    cx=pRect->right-pRect->left;
    cy=pRect->bottom-pRect->top;

    SetWindowPos(m_hWnd, NULL, pRect->left, pRect->top
        , (UINT)cx, (UINT)cy, SWP_NOZORDER);

    UpdateScrollRanges();
    return;
    }




/*
 * CPages::SizeGet
 *
 * Purpose:
 *  Retrieves the size of the pages window in parent coordinates.
 *
 * Parameters:
 *  pRect           LPRECT in which to return the size.  The right
 *                  and bottom fields will contain the dimensions.
 *
 * Return Value:
 *  None
 */

void CPages::SizeGet(LPRECT pRect)
    {
    RectGet(pRect);
    return;
    }







/*
 * CPages::SizeSet
 *
 * Purpose:
 *  Sets a new size in parent coordinates for the Pages window.
 *
 * Parameters:
 *  pRect           LPRECT containing the new rectangle.
 *  fNotify         BOOL indicating if we're to notify anyone of
 *                  the change.
 *
 * Return Value:
 *  None
 */

void CPages::SizeSet(LPRECT pRect, BOOL fNotify)
    {
    UINT        cx, cy;

    if (NULL==pRect)
        return;

    cx=pRect->right-pRect->left;
    cy=pRect->bottom-pRect->top;

    SetWindowPos(m_hWnd, NULL, 0, 0, (UINT)cx, (UINT)cy
        , SWP_NOMOVE | SWP_NOZORDER);

    UpdateScrollRanges();
    return;
    }






/*
 * CPages::ActivePage
 *
 * Purpose:
 *  Returns a CPage pointer to the current page.
 *
 * Parameters:
 *  None
 *
 * Return Value:
 *  PCPage          Pointer to the current page.
 */

PCPage CPages::ActivePage(void)
    {
    PCPage      pPage;
    BOOL        fRet;

    fRet=PageGet(m_iPageCur, &pPage, FALSE);
    return fRet ? pPage : NULL;
    }





/*
 * CPages::PageInsert
 *
 * Purpose:
 *  Creates a new page immediately after the current page.  If
 *  there are no pages then this creates page 1.
 *
 * Parameters:
 *  uReserved       UINT unused
 *
 * Return Value:
 *  UINT            Index of the new page, 0 on failure.
 */

UINT CPages::PageInsert(UINT uReserved)
    {
    //CHAPTER7MOD
    PCPage      pPage;

    if (0!=m_cPages)
        {
        //Close the current page, committing changes.
        if (!PageGet(m_iPageCur, &pPage, FALSE))
            return 0;

        pPage->Close(TRUE);
        }
    //End CHAPTER7MOD

    //Create and open the new page.
    if (!PageAdd(m_iPageCur, m_dwIDNext, TRUE))
        return 0;

    m_dwIDNext++;
    m_iPageCur++;
    m_cPages++;

    InvalidateRect(m_hWnd, NULL, FALSE);
    UpdateWindow(m_hWnd);
    return m_iPageCur;
    }







/*
 * CPages::PageDelete
 *
 * Removes the current page from the page list.
 *
 * Parameters:
 *  uReserved       UINT unused
 *
 * Return Value:
 *  UINT            Index to the now current page from the page
 *                  list, NOVALUE on error.
 */

UINT CPages::PageDelete(UINT uReserved)
    {
    PCPage      pPage;

    if (!PageGet(m_iPageCur, &pPage, FALSE))
        return NOVALUE;

    //Delete the page in storage, memory, and the listbox.
    SendMessage(m_hWndPageList, LB_DELETESTRING, m_iPageCur, 0L);

    //CHAPTER7MOD
    pPage->Destroy(m_pIStorage);
    //End CHAPTER7MOD

    delete pPage;   //Does final pPage->Close

    /*
     * If this is the last page then the current is one less.  If
     * it's the only page the current is zero.  Otherwise the
     * current is the next page.
     */

    if (m_iPageCur==m_cPages-1)   //Covers last or only page.
        m_iPageCur--;

    m_cPages--;

    //Insure the new visible page is open.
    if (0!=m_cPages)
        {
        //CHAPTER7MOD
        PageGet(m_iPageCur, &pPage, TRUE);
        //End CHAPTER7MOD
        InvalidateRect(m_hWnd, NULL, FALSE);
        }
    else
        InvalidateRect(m_hWnd, NULL, TRUE);

    UpdateWindow(m_hWnd);
    return m_iPageCur;
    }






/*
 * CPages::CurPageGet
 *
 * Purpose:
 *  Retrieves the index of the current page we're viewing.
 *
 * Parameters:
 *  None
 *
 * Return Value:
 *  UINT            Index of the current page.
 */

UINT CPages::CurPageGet(void)
    {
    return m_iPageCur;
    }





/*
 * CPages::CurPageSet
 *
 * Purpose:
 *  Sets the index of the current page to view.
 *
 * Parameters:
 *  iPage           UINT index of the page to view. 0 means first
 *                  page, NOVALUE means last page.
 *
 * Return Value:
 *  UINT            Index of the previous current page, NOVALUE on
 *                  error.
 */

UINT CPages::CurPageSet(UINT iPage)
    {
    UINT    iPageNew;
    UINT    iPagePrev=m_iPageCur;
    //CHAPTER7MOD
    PCPage  pPage;
    //End CHAPTER7MOD

    switch (iPage)
        {
        case 0:
            iPageNew=0;
            break;

        case NOVALUE:
            iPageNew=m_cPages-1;
            break;

        default:
            if (iPage >= m_cPages)
                iPage=0;

            iPageNew=iPage;
            break;
        }

    //No reason to switch to the same page.
    if (iPagePrev==iPageNew)
        return iPage;

    //CHAPTER7MOD
    //Close the old page committing changes.
    if (!PageGet(iPagePrev, &pPage, FALSE))
        return NOVALUE;

    pPage->Close(TRUE);
    //End CHAPTER7MOD

    m_iPageCur=iPageNew;

    //CHAPTER7MOD
    //Open the new page.
    PageGet(m_iPageCur, &pPage, TRUE);
    //End CHAPTER7MOD

    InvalidateRect(m_hWnd, NULL, FALSE);
    UpdateWindow(m_hWnd);
    return iPagePrev;
    }





/*
 * CPages::NumPagesGet
 *
 * Purpose:
 *  Returns the number of pages this object current contains.
 *
 * Parameters:
 *  None
 *
 * Return Value:
 *  UINT            Number of pages we contain.
 */

UINT CPages::NumPagesGet(void)
    {
    return m_cPages;
    }





/*
 * CPages::PageGet
 * (Protected)
 *
 * Purpose:
 *  Returns a page of a given index returning a BOOL so it's simple
 *  to use this function inside if statements.
 *
 * Parameters:
 *  iPage           UINT page to retrieve 0 based.
 *  ppPage          PCPage * in which to return the page pointer
 *  fOpen           BOOL indicating if we should open this page as
 *                  well.
 *
 * Return Value:
 *  BOOL            TRUE if successful, FALSE otherwise.
 */

//CHAPTER7MOD
BOOL CPages::PageGet(UINT iPage, PCPage *ppPage, BOOL fOpen)
    {
    if (NULL==ppPage)
        return FALSE;

    if (LB_ERR!=SendMessage(m_hWndPageList, LB_GETTEXT
        , iPage, (LONG)ppPage))
        {
        if (fOpen)
            (*ppPage)->Open(m_pIStorage);

        return TRUE;
        }

    return FALSE;
    }
//End CHAPTER7MOD





/*
 * CPages::PageAdd
 * (Protected)
 *
 * Purpose:
 *  Creates a new page initialized to the given values.  The new
 *  page's storage is created if it does not already exist.  If
 *  fOpenStorage is set the page's storage is opened and left
 *  opened.
 *
 * Parameters:
 *  iPage           UINT Location at which to insert page; new page
 *                  is inserted after this position.  NOVALUE for
 *                  the end.
 *  dwID            DWORD ID for this page.
 *  fOpenStorage    BOOL indicating if we're to leave the storage
 *                  open.
 *
 * Return Value:
 *  BOOL            TRUE if the function succeeded, FALSE otherwise.
 */

//CHAPTER7MOD
BOOL CPages::PageAdd(UINT iPage, DWORD dwID, BOOL fOpenStorage)
    {
//End CHAPTER7MOD
    PCPage      pPage;
    LRESULT     lr;

    pPage=new CPage(dwID);

    if (NULL==pPage)
        return FALSE;

    //CHAPTER7MOD
    if (fOpenStorage)
        pPage->Open(m_pIStorage);
    //End CHAPTER7MOD

    if (NOVALUE==iPage)
        iPage--;

    //Now try to add to the listbox.
    lr=SendMessage(m_hWndPageList, LB_INSERTSTRING, iPage+1
        , (LONG)pPage);

    if (LB_ERRSPACE==lr)
        {
        //CHAPTER7MOD
        if (fOpenStorage)
            pPage->Close(FALSE);
        //End CHAPTER7MOD

        delete pPage;
        return FALSE;
        }

    return TRUE;
    }