diff options
Diffstat (limited to 'mcs/class/System.Web/System.Web.UI.WebControls/PagedDataSource.cs')
| -rw-r--r-- | mcs/class/System.Web/System.Web.UI.WebControls/PagedDataSource.cs | 470 |
1 files changed, 0 insertions, 470 deletions
diff --git a/mcs/class/System.Web/System.Web.UI.WebControls/PagedDataSource.cs b/mcs/class/System.Web/System.Web.UI.WebControls/PagedDataSource.cs deleted file mode 100644 index 41546a4c814..00000000000 --- a/mcs/class/System.Web/System.Web.UI.WebControls/PagedDataSource.cs +++ /dev/null @@ -1,470 +0,0 @@ -/**
- * Namespace: System.Web.UI.WebControls
- * Class: PagedDataSource
- *
- * Author: Gaurav Vaish
- * Maintainer: gvaish@iitk.ac.in
- * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
- * Implementation: yes
- * Status: 100%
- *
- * (C) Gaurav Vaish (2002)
- */
-
-using System;
-using System.ComponentModel;
-using System.Collections;
-using System.Web;
-using System.Web.UI;
-
-namespace System.Web.UI.WebControls
-{
- public sealed class PagedDataSource : ICollection, IEnumerable, ITypedList
- {
- private int pageSize;
- private bool allowPaging;
- private int currentPageIndex;
- private bool allowCustomPaging;
- private int virtualCount;
-
- private IEnumerable dataSource;
-
- public PagedDataSource()
- {
- Initialize();
- }
-
- private void Initialize()
- {
- pageSize = 10;
- allowPaging = false;
- currentPageIndex = 0;
- allowCustomPaging = false;
- virtualCount = 0;
- }
-
- public bool AllowCustomPaging
- {
- get
- {
- return allowCustomPaging;
- }
- set
- {
- allowCustomPaging = value;
- }
- }
-
- public bool AllowPaging
- {
- get
- {
- return allowPaging;
- }
- set
- {
- allowPaging = value;
- }
- }
-
- public int Count
- {
- get
- {
- if(dataSource != null)
- {
- if(IsPagingEnabled)
- {
- return DataSourceCount;
- }
- if(IsCustomPagingEnabled)
- {
- return pageSize;
- }
- if(IsLastPage)
- {
- return (DataSourceCount - FirstIndexInPage);
- }
- return pageSize;
- }
- return 0;
- }
- }
-
- public int CurrentPageIndex
- {
- get
- {
- return currentPageIndex;
- }
- }
-
- public IEnumerable DataSource
- {
- get
- {
- return dataSource;
- }
- set
- {
- dataSource = value;
- }
- }
-
- public int DataSourceCount
- {
- get
- {
- if(dataSource != null)
- {
- if(IsCustomPagingEnabled)
- {
- return virtualCount;
- }
- if(dataSource is ICollection)
- {
- return ((ICollection)dataSource).Count;
- }
- throw new HttpException(HttpRuntime.FormatResourceString("PagedDataSource_Cannot_Get_Count"));
- }
- return 0;
- }
- }
-
- public int FirstIndexInPage
- {
- get
- {
- if(dataSource != null && IsPagingEnabled && IsCustomPagingEnabled)
- {
- return (currentPageIndex * pageSize);
- }
- return 0;
- }
- }
-
- public bool IsCustomPagingEnabled
- {
- get
- {
- return (IsPagingEnabled && allowCustomPaging);
- }
- }
-
- public bool IsFirstPage
- {
- get
- {
- return (!IsPagingEnabled || (CurrentPageIndex == 0));
- }
- }
-
- public bool IsLastPage
- {
- get
- {
- return (!IsPagingEnabled || (CurrentPageIndex == PageCount));
- }
- }
-
- public bool IsPagingEnabled
- {
- get
- {
- return (allowPaging && pageSize != 0);
- }
- }
-
- public bool IsReadOnly
- {
- get
- {
- return false;
- }
- }
-
- public bool IsSynchronized
- {
- get
- {
- return false;
- }
- }
-
- public int PageCount
- {
- get
- {
- if(dataSource != null)
- {
- int total = DataSourceCount;
- if(!IsPagingEnabled)
- {
- return total;
- }
- return (total + pageSize - 1)/pageSize;
- }
- return 0;
- }
- }
-
- public int PageSize
- {
- get
- {
- return pageSize;
- }
- set
- {
- pageSize = value;
- }
- }
-
- public object SyncRoot
- {
- get
- {
- return this;
- }
- }
-
- public int VirtualCount
- {
- get
- {
- return virtualCount;
- }
- set
- {
- virtualCount = value;
- }
- }
-
- public void CopyTo(Array array, int index)
- {
- foreach(object current in this)
- {
- array.SetValue(array, index++);
- }
- }
-
- public IEnumerator GetEnumerator()
- {
- int fInd = FirstIndexInPage;
- int count = -1;
- if(dataSource is ICollection)
- {
- count = Count;
- }
-
- if(dataSource is IList)
- {
- return (new PrivateListEnumerator((IList)dataSource, fInd, count));
- }
- if(dataSource is Array)
- {
- return (new PrivateArrayEnumerator((object[])dataSource, fInd, count));
- }
- if(dataSource is ICollection)
- {
- return (new PrivateICollectionEnumerator((ICollection)dataSource, fInd, count));
- }
- if(allowCustomPaging)
- {
- return (new PrivateIEnumeratorEnumerator(dataSource.GetEnumerator(), Count));
- }
- return dataSource.GetEnumerator();
- }
-
- class PrivateIEnumeratorEnumerator : IEnumerator
- {
- private int index;
- private int max;
-
- private IEnumerator enumerator;
-
- public PrivateIEnumeratorEnumerator(IEnumerator enumerator, int count)
- {
- this.enumerator = enumerator;
- index = -1;
- max = count;
- }
-
- public bool MoveNext()
- {
- enumerator.MoveNext();
- index++;
- return (index < max);
- }
-
- public void Reset()
- {
- index = -1;
- enumerator.Reset();
- }
-
- public object Current
- {
- get
- {
- return enumerator.Current;
- }
- }
- }
-
- class PrivateICollectionEnumerator : IEnumerator
- {
- private int index;
- private int start;
- private int max;
-
- private ICollection collection;
- private IEnumerator collEnum;
-
- public PrivateICollectionEnumerator(ICollection collection, int start, int count)
- {
- this.collection = collection;
- this.start = start;
- index = -1;
- max = start + count;
- if(max > collection.Count)
- {
- max = collection.Count;
- }
- }
-
- public bool MoveNext()
- {
- if(collEnum == null)
- {
- int cIndex = 0;
- collEnum = collection.GetEnumerator();
- while(cIndex < start)
- {
- collEnum.MoveNext();
- }
- }
- collEnum.MoveNext();
- index++;
- return (start + index < max);
- }
-
- public void Reset()
- {
- index = -1;
- collEnum = null;
- }
-
- public object Current
- {
- get
- {
- return collEnum.Current;
- }
- }
- }
-
- class PrivateArrayEnumerator : IEnumerator
- {
- private int index;
- private int start;
- private int max;
- private object[] values;
-
- public PrivateArrayEnumerator(object[] values, int start, int count)
- {
- this.values = values;
- this.start = start;
- index = -1;
- max = start + count;
- if(max > this.values.Length)
- {
- max = this.values.Length;
- }
- }
-
- public bool MoveNext()
- {
- index++;
- return (index + start < max);
- }
-
- public void Reset()
- {
- index = -1;
- }
-
- public object Current
- {
- get
- {
- if(index >= 0)
- {
- return values[index + start];
- }
- throw new InvalidOperationException("Enumerator_MoveNext_Not_Called");
- }
- }
- }
-
- class PrivateListEnumerator : IEnumerator
- {
- private int index;
- private int start;
- private int max;
- private IList collection;
-
- public PrivateListEnumerator(IList list, int start, int count)
- {
- collection = list;
- this.start = start;
- index = -1;
- max = start + count;
- if(max > list.Count)
- {
- max = list.Count;
- }
- }
-
- public bool MoveNext()
- {
- index++;
- return (index + start < max);
- }
-
- public void Reset()
- {
- index = -1;
- }
-
- public object Current
- {
- get
- {
- if(index >= 0)
- {
- return collection[index + start];
- }
- throw new InvalidOperationException("Enumerator_MoveNext_Not_Called");
- }
- }
- }
-
- public string GetListName(PropertyDescriptor[] listAccessors)
- {
- return String.Empty;
- }
-
- public PropertyDescriptorCollection GetItemProperties(PropertyDescriptor[] listAccessors)
- {
- if(dataSource != null)
- {
- if(dataSource is ITypedList)
- {
- return ((ITypedList)dataSource).GetItemProperties(listAccessors);
- }
- }
- return null;
- }
- }
-}
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