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JFunction.cs
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273 lines (241 loc) · 7.42 KB
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/********
* @version : 2.1.1 - Ext.NET Pro License
* @author : Ext.NET, Inc. http://www.ext.net/
* @date : 2012-12-10
* @copyright : Copyright (c) 2007-2012, Ext.NET, Inc. (http://www.ext.net/). All rights reserved.
* @license : See license.txt and http://www.ext.net/license/.
********/
using System;
using System.ComponentModel;
using System.Text;
using System.Text.RegularExpressions;
using System.Web.UI.WebControls;
using Ext.Net.Utilities;
namespace Ext.Net
{
/// <summary>
///
/// </summary>
[ToolboxItem(false)]
[Description("")]
public partial class JFunction : BaseItem
{
/// <summary>
///
/// </summary>
[Description("")]
public JFunction() { }
private static readonly Regex Value_RE = new Regex(@"^([\w\.]+)$", RegexOptions.Compiled);
private static readonly Regex Fn_RE = new Regex(@"^function\s*\(", RegexOptions.Compiled);
///<summary>
/// Return true if passed string is function name (otherwise it is handler)
///</summary>
///<param name="fn"></param>
///<returns></returns>
public static bool IsFunctionName(string fn)
{
if (fn == null)
{
throw new ArgumentNullException("fn");
}
return Value_RE.Match(fn).Success || Fn_RE.Match(fn).Success;
}
/// <summary>
///
/// </summary>
[Description("")]
public JFunction(string handler)
{
if (handler == null)
{
throw new ArgumentNullException("handler");
}
if (JFunction.IsFunctionName(handler))
{
this.Fn = handler;
}
else
{
this.Handler = handler;
}
}
/// <summary>
///
/// </summary>
/// <param name="handler"></param>
/// <param name="delay"></param>
public JFunction(string handler, int delay) : this(handler)
{
this.Delay = delay;
}
/// <summary>
///
/// </summary>
[Description("")]
public JFunction(string handler, params string[] args) : this(handler)
{
this.Args = args;
}
/// <summary>
///
/// </summary>
[Description("")]
public override string ToString()
{
return this.ToScript();
}
/// <summary>
///
/// </summary>
/// <returns></returns>
[Description("")]
public virtual string ToScript()
{
if (this.Fn.IsNotEmpty())
{
return this.WrapByDelay(this.NamePrefix + this.Fn);
}
string handler = TokenUtils.ReplaceRawToken(TokenUtils.ParseTokens(this.Handler, this.Owner));
if (this.Args != null && this.Args.Length > 0)
{
if (this.FormatHandler)
{
return this.WrapByDelay(this.NamePrefix + "function(".ConcatWith(this.Args.Join(","), "){", handler.FormatWith(this.Args), "}"));
}
return this.WrapByDelay(this.NamePrefix + "function(".ConcatWith(this.Args.Join(","), "){", handler, "}"));
}
return this.WrapByDelay(this.NamePrefix + "function(){".ConcatWith(handler).ConcatWith("}"));
}
/// <summary>
///
/// </summary>
/// <param name="fn"></param>
/// <returns></returns>
protected virtual string WrapByDelay(string fn)
{
if (this.Delay > 0)
{
return "Ext.Function.createDelayed({0}, {1})".FormatWith(fn, this.Delay);
}
return fn;
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <returns></returns>
public virtual string ToCallScript(params string[] args)
{
StringBuilder sb = new StringBuilder();
if (args != null && args.Length > 0)
{
foreach (object arg in args)
{
sb.AppendFormat("{0},", JSON.Serialize(arg, JSON.ScriptConvertersInternal));
}
}
return "({0}).({1});".FormatWith(this.ToScript(), sb.ToString().LeftOfRightmostOf(','));
}
private string NamePrefix
{
get
{
return this.Name.IsEmpty() ? "" : this.Name + ":";
}
}
/// <summary>
///
/// </summary>
[NotifyParentProperty(true)]
[DefaultValue(null)]
[Description("")]
public virtual string Name
{
get;
set;
}
/// <summary>
/// The raw JavaScript code to call.
/// </summary>
[NotifyParentProperty(true)]
[DefaultValue(null)]
[Description("The raw JavaScript code to call.")]
public virtual string Fn
{
get;
set;
}
string handler = "";
/// <summary>
/// The JavaScript logic within the function(){} signature.
/// </summary>
[NotifyParentProperty(true)]
[DefaultValue("")]
[Description("The JavaScript logic within the function(){} signature.")]
public virtual string Handler
{
get
{
return this.handler;
}
set
{
this.handler = value;
}
}
/// <summary>
/// Custom arguments passed to event handler if Handler property is set.
/// </summary>
[TypeConverter(typeof(StringArrayConverter))]
[NotifyParentProperty(true)]
[DefaultValue(null)]
[Description("Custom arguments passed to event handler if Handler property is set.")]
public virtual string[] Args
{
get;
set;
}
/// <summary>
/// If FormatHander=true, then the Handler property will be passed through the string.Format() Method and argument placeholders/tokens with be replaced with the argument index value.
/// </summary>
[NotifyParentProperty(true)]
[DefaultValue(false)]
[Description("If FormatHander=true, then the Handler property will be passed through the string.Format() Method and argument placeholders/tokens with be replaced with the argument index value.")]
public virtual bool FormatHandler
{
get;
set;
}
/// <summary>
///
/// </summary>
[DefaultValue(0)]
public virtual int Delay
{
get;
set;
}
/// <summary>
///
/// </summary>
[Description("")]
public override bool IsDefault
{
get
{
return this.Handler.IsEmpty() && this.Fn.IsEmpty();
}
}
/// <summary>
///
/// </summary>
[Description("")]
public static JFunction EmptyFn
{
get
{
return new JFunction {Fn = "Ext.emptyFn"};
}
}
}
}