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//------------------------------------------------------------------------------
// <copyright file="TemplateColumn.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.ComponentModel;
using System.Web;
using System.Web.UI;
/// <devdoc>
/// <para>Defines the template for controls layout within a
/// <see cref='System.Web.UI.WebControls.DataGrid'/>
/// column.</para>
/// </devdoc>
//
public class TemplateColumn : DataGridColumn {
private ITemplate headerTemplate;
private ITemplate footerTemplate;
private ITemplate itemTemplate;
private ITemplate editItemTemplate;
/// <devdoc>
/// Initializes a new instance of the <see cref='System.Web.UI.WebControls.TemplateColumn'/> class.
/// </devdoc>
public TemplateColumn() {
}
/// <devdoc>
/// <para>Specifies the <see cref='System.Web.UI.ITemplate' qualify='true'/> that defines how items in edit mode are rendered. </para>
/// </devdoc>
[
Browsable(false),
DefaultValue(null),
WebSysDescription(SR.TemplateColumn_EditItemTemplate),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DataGridItem))
]
public virtual ITemplate EditItemTemplate {
get {
return editItemTemplate;
}
set {
editItemTemplate = value;
OnColumnChanged();
}
}
/// <devdoc>
/// <para>Specifies the <see cref='System.Web.UI.ITemplate' qualify='true'/> that defines how the control footer is rendered. </para>
/// </devdoc>
[
Browsable(false),
DefaultValue(null),
WebSysDescription(SR.TemplateColumn_FooterTemplate),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DataGridItem))
]
public virtual ITemplate FooterTemplate {
get {
return footerTemplate;
}
set {
footerTemplate = value;
OnColumnChanged();
}
}
/// <devdoc>
/// <para>Specifies the <see cref='System.Web.UI.ITemplate' qualify='true'/>
/// that defines how the control header is rendered.</para>
/// </devdoc>
[
Browsable(false),
DefaultValue(null),
WebSysDescription(SR.TemplateColumn_HeaderTemplate),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DataGridItem))
]
public virtual ITemplate HeaderTemplate {
get {
return headerTemplate;
}
set {
headerTemplate = value;
OnColumnChanged();
}
}
/// <devdoc>
/// <para> Specifies the <see cref='System.Web.UI.ITemplate' qualify='true'/> that defines how items are rendered. </para>
/// </devdoc>
[
Browsable(false),
DefaultValue(null),
WebSysDescription(SR.TemplateColumn_ItemTemplate),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DataGridItem))
]
public virtual ITemplate ItemTemplate {
get {
return itemTemplate;
}
set {
itemTemplate = value;
OnColumnChanged();
}
}
/// <internalonly/>
/// <devdoc>
/// </devdoc>
public override void InitializeCell(TableCell cell, int columnIndex, ListItemType itemType) {
base.InitializeCell(cell, columnIndex, itemType);
ITemplate contentTemplate = null;
switch (itemType) {
case ListItemType.Header:
contentTemplate = headerTemplate;
break;
case ListItemType.Footer:
contentTemplate = footerTemplate;
break;
case ListItemType.Item:
case ListItemType.AlternatingItem:
case ListItemType.SelectedItem:
contentTemplate = itemTemplate;
break;
case ListItemType.EditItem:
if (editItemTemplate != null)
contentTemplate = editItemTemplate;
else
goto case ListItemType.Item;
break;
}
if (contentTemplate != null) {
// The base class might have added a control or some text for some cases
// such as header text which need to be removed before
// the corresponding template is used.
// Note that setting text also has the effect of clearing out any controls.
cell.Text = String.Empty;
contentTemplate.InstantiateIn(cell);
}
else {
if (itemType == ListItemType.Item ||
itemType == ListItemType.AlternatingItem ||
itemType == ListItemType.SelectedItem ||
itemType == ListItemType.EditItem) {
cell.Text = " ";
}
}
}
}
}
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