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//------------------------------------------------------------------------------
// <copyright file="TemplatePagerField.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Web;
using System.Web.Resources;
using System.Web.UI;
namespace System.Web.UI.WebControls {
public class TemplatePagerField : DataPagerField {
private int _startRowIndex;
private int _maximumRows;
private int _totalRowCount;
private ITemplate _pagerTemplate;
private static readonly object EventPagerCommand = new object();
private EventHandlerList _events;
public TemplatePagerField() {
}
/// <devdoc>
/// Indicates the list of event handler delegates for the view. This property is read-only.
/// </devdoc>
private EventHandlerList Events {
get {
if (_events == null) {
_events = new EventHandlerList();
}
return _events;
}
}
/// <devdoc>
/// <para> Specifies the <see cref='System.Web.UI.ITemplate' qualify='true'/> that defines how items are rendered. </para>
/// </devdoc>
[
Browsable(false),
DefaultValue(null),
ResourceDescription("TemplatePagerField_PagerTemplate"),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateContainer(typeof(DataPagerFieldItem), BindingDirection.TwoWay)
]
public virtual ITemplate PagerTemplate {
get {
return _pagerTemplate;
}
set {
_pagerTemplate = value;
OnFieldChanged();
}
}
[
Category("Action"),
ResourceDescription("TemplatePagerField_OnPagerCommand")
]
public event EventHandler<DataPagerCommandEventArgs> PagerCommand {
add {
Events.AddHandler(EventPagerCommand, value);
}
remove {
Events.RemoveHandler(EventPagerCommand, value);
}
}
protected override void CopyProperties(DataPagerField newField) {
((TemplatePagerField)newField).PagerTemplate = PagerTemplate;
base.CopyProperties(newField);
}
protected override DataPagerField CreateField() {
return new TemplatePagerField();
}
[SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers", MessageId = "0#")]
public override void HandleEvent(CommandEventArgs e) {
DataPagerFieldItem item = null;
DataPagerFieldCommandEventArgs cea = e as DataPagerFieldCommandEventArgs;
if (cea != null) {
item = cea.Item;
}
DataPagerCommandEventArgs pagerEventArgs = new DataPagerCommandEventArgs(this, _totalRowCount, e, item);
OnPagerCommand(pagerEventArgs);
if (pagerEventArgs.NewStartRowIndex != -1) {
DataPager.SetPageProperties(pagerEventArgs.NewStartRowIndex, pagerEventArgs.NewMaximumRows, true);
}
}
public override void CreateDataPagers(DataPagerFieldItem container, int startRowIndex, int maximumRows, int totalRowCount, int fieldIndex) {
_startRowIndex = startRowIndex;
_maximumRows = maximumRows;
_totalRowCount = totalRowCount;
if (_pagerTemplate != null) {
_pagerTemplate.InstantiateIn(container);
}
}
/// <devdoc>
/// <para>Raises the <see cref='System.Web.UI.WebControls.ListView.TotalRowCountAvailable'/>event of a <see cref='System.Web.UI.WebControls.ListView'/>.</para>
/// </devdoc>
[SuppressMessage("Microsoft.Security", "CA2109:ReviewVisibleEventHandlers", MessageId = "0#")]
protected virtual void OnPagerCommand(DataPagerCommandEventArgs e) {
EventHandler<DataPagerCommandEventArgs> handler = (EventHandler<DataPagerCommandEventArgs>)Events[EventPagerCommand];
if (handler != null) {
handler(this, e);
}
else {
throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture, AtlasWeb.TemplatePagerField_UnhandledEvent, "PagerCommand"));
}
}
}
}
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