Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / ItemPager.cs / 1305376 / ItemPager.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System; using System.Collections; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Security.Permissions; namespace System.Web.UI.MobileControls { /* * Item pager, a class that provides state as items of a control are paginated. * * Copyright (c) 2000 Microsoft Corporation */ ///[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] public class ItemPager { private MobileControl _control; private int _firstPageItemCount; private int _fullPageItemCount; private int _lastPageItemCount; private int _firstPage; private int _lastPage; /// public ItemPager() { } /// public ItemPager(ControlPager pager, MobileControl control, int itemCount, int itemsPerPage, int itemWeight) { _control = control; if (itemsPerPage > 0) { // User-specified pagination behavior, always given // number of items per page. if (itemCount < itemsPerPage) { _firstPageItemCount = itemCount; _firstPage = _lastPage = pager.GetPage(itemCount * itemWeight); } else { int numberOfPages = (itemCount - 1) / itemsPerPage + 1; _firstPageItemCount = itemsPerPage; _fullPageItemCount = itemsPerPage; _lastPageItemCount = itemCount - (numberOfPages - 1) * itemsPerPage; _firstPage = pager.GetPage(itemsPerPage * itemWeight); pager.PageCount += numberOfPages - 1; if (numberOfPages > 1) { pager.RemainingWeight = Math.Max(0, pager.PageWeight - _lastPageItemCount * itemWeight); } _lastPage = _firstPage + numberOfPages - 1; } } else { int totalItemWeight = itemCount * itemWeight; if (totalItemWeight <= pager.RemainingWeight) { _firstPageItemCount = itemCount; _firstPage = _lastPage = pager.GetPage(totalItemWeight); } else { _firstPageItemCount = pager.RemainingWeight / itemWeight; int remainingItemCount = itemCount - _firstPageItemCount; _fullPageItemCount = Math.Max(1, pager.PageWeight / itemWeight); int fullPageCount = remainingItemCount / _fullPageItemCount; _lastPageItemCount = remainingItemCount % _fullPageItemCount; _firstPage = pager.PageCount; // increment for first page pager.PageCount++; pager.RemainingWeight = pager.PageWeight; // increment for full pages pager.PageCount += fullPageCount; // remove remaining weight for last page pager.RemainingWeight -= _lastPageItemCount * itemWeight; // correct if first page is empty if (_firstPageItemCount == 0) { _firstPage++; _firstPageItemCount = Math.Min(_fullPageItemCount, itemCount); } // correct if last page is empty if (_lastPageItemCount == 0) { pager.PageCount--; _lastPageItemCount = Math.Min(_fullPageItemCount, itemCount); pager.RemainingWeight = 0; } _lastPage = pager.PageCount; } } _control.FirstPage = _firstPage; _control.LastPage = _lastPage; } /// public int ItemIndex { get { int page = _control.Form.CurrentPage; if (page < _firstPage || page > _lastPage) { return -1; } if (page == _firstPage) { return 0; } else { int fullPageCount = (page - _firstPage) - 1; return fullPageCount * _fullPageItemCount + _firstPageItemCount; } } } /// public int ItemCount { get { int page = _control.Form.CurrentPage; if (page < _firstPage || page > _lastPage) { return -1; } if (page == _firstPage) { return _firstPageItemCount; } else if (page == _lastPage) { return _lastPageItemCount; } else { return _fullPageItemCount; } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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