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410 lines (366 loc) · 11.7 KB
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/********
* This file is part of Ext.NET.
*
* Ext.NET is free software: you can redistribute it and/or modify
* it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Ext.NET is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
* along with Ext.NET. If not, see <http://www.gnu.org/licenses/>.
*
*
* @version : 2.0.0.beta - Community Edition (AGPLv3 License)
* @author : Ext.NET, Inc. http://www.ext.net/
* @date : 2012-03-07
* @copyright : Copyright (c) 2007-2012, Ext.NET, Inc. (http://www.ext.net/). All rights reserved.
* @license : GNU AFFERO GENERAL PUBLIC LICENSE (AGPL) 3.0.
* See license.txt and http://www.ext.net/license/.
* See AGPL License at http://www.gnu.org/licenses/agpl-3.0.txt
********/
using System;
using System.ComponentModel;
using System.Web;
using Ext.Net.Utilities;
namespace Ext.Net
{
/// <summary>
///
/// </summary>
[Description("")]
public partial class RequestManager
{
/// <summary>
///
/// </summary>
[Description("")]
protected internal static void EnsureDirectEvent()
{
if (!RequestManager.IsAjaxRequest)
{
// throw new InvalidOperationException("This operation requires an AjaxRequest");
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsAjaxRequest
{
get
{
if (HttpContext.Current != null && HttpContext.Current.Request != null)
{
if (HttpContext.Current.Items["__Ext.Net.SuppressAjaxRequestMarker"] != null)
{
return false;
}
return RequestManager.HasXHeader(HttpContext.Current.Request) || RequestManager.HasInputFieldMarker(HttpContext.Current.Request);
}
return false;
}
}
/// <summary>
///
/// </summary>
[Browsable(false)]
[EditorBrowsable(EditorBrowsableState.Never)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
[Description("")]
public static bool IsMicrosoftAjaxRequest
{
get
{
if (HttpContext.Current != null && HttpContext.Current.Request != null)
{
return RequestManager.HasXMicrosoftAjaxHeader(HttpContext.Current.Request);
}
return false;
}
}
public static void SuppressAjaxRequestMarker()
{
if (HttpContext.Current == null)
{
return;
}
HttpContext.Current.Items["__Ext.Net.SuppressAjaxRequestMarker"] = true;
}
public static void ResumeAjaxRequestMarker()
{
if (HttpContext.Current == null)
{
return;
}
if (HttpContext.Current.Items.Contains("__Ext.Net.SuppressAjaxRequestMarker"))
{
HttpContext.Current.Items.Remove("__Ext.Net.SuppressAjaxRequestMarker");
}
}
/// <summary>
///
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
[Description("")]
public static bool HasInputFieldMarker(HttpRequest request)
{
if (request == null)
{
return false;
}
try
{
string marker = request.Form["__ExtNetDirectEventMarker"];
if (marker.IsNotEmpty())
{
if (marker.ToLowerInvariant().Contains("delta=true"))
{
return true;
}
}
}
catch (Exception)
{
}
return false;
}
/// <summary>
///
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
[Description("")]
public static bool HasXHeader(HttpRequest request)
{
string[] values = request.Headers.GetValues("X-Ext.Net");
if (values != null)
{
foreach (string value in values)
{
if (value.ToLowerInvariant().Contains("delta=true"))
{
return true;
}
}
}
return false;
}
/// <summary>
///
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
[EditorBrowsable(EditorBrowsableState.Never)]
[Description("")]
public static bool HasXMicrosoftAjaxHeader(HttpRequest request)
{
if (HttpContext.Current == null)
{
return false;
}
string[] values = HttpContext.Current.Request.Headers.GetValues("X-MicrosoftAjax");
if (values != null)
{
foreach (string value in values)
{
if (value.ToLowerInvariant().Contains("delta=true"))
{
return true;
}
}
}
return false;
}
/* User Agent Detection (browser)
-----------------------------------------------------------------------------------------------*/
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsOpera
{
get
{
return (HttpContext.Current != null && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("opera"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsChrome
{
get
{
return (HttpContext.Current != null && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("chrome"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsWebKit
{
get
{
return (HttpContext.Current != null && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("webkit"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsSafari
{
get
{
return (HttpContext.Current != null && !RequestManager.IsChrome && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("safari"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsSafari3
{
get
{
return (HttpContext.Current != null && RequestManager.IsSafari && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("version/3"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsSafari4
{
get
{
return (HttpContext.Current != null && RequestManager.IsSafari && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("version/4"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsIE
{
get
{
return (HttpContext.Current != null && !RequestManager.IsOpera && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("msie"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsIE6
{
get
{
return (HttpContext.Current != null && RequestManager.IsIE && HttpContext.Current.Request.Browser.MajorVersion <= 6);
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsIE7
{
get
{
return (HttpContext.Current != null && RequestManager.IsIE && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("msie 7"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsIE8
{
get
{
return (HttpContext.Current != null && RequestManager.IsIE && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("msie 8"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsIE9
{
get
{
return (HttpContext.Current != null && RequestManager.IsIE && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("msie 9"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsGecko
{
get
{
return (HttpContext.Current != null && !RequestManager.IsWebKit && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("gecko"));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsGecko3
{
get
{
return (HttpContext.Current != null && RequestManager.IsGecko && (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant().Contains("rv:1.9"));
}
}
/* User Agent Detection (operating system)
-----------------------------------------------------------------------------------------------*/
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsWindows
{
get
{
string ua = (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant();
return (HttpContext.Current != null && (ua.Contains("windows") || ua.Contains("win32")));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsMac
{
get
{
string ua = (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant();
return (HttpContext.Current != null && (ua.Contains("macintosh") || ua.Contains("mac os x")));
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static bool IsLinux
{
get
{
string ua = (HttpContext.Current.Request.UserAgent ?? "").ToLowerInvariant();
return (HttpContext.Current != null && ua.Contains("linux"));
}
}
}
}