#region License
/*
* Copyright 2002-2004 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
using System.Collections;
using System.Text;
using System.Web.UI;
using Spring.Web.UI.Validation;
using PageSpring.Web.UI.Page;
namespace Spring.Web.UI.Validation{
/// <summary>
/// Implementation of <see cref="IValidationErrorsRenderer"/> that
/// displays an error image to let user know there is an error, and
/// tooltip to display actual error messages.
/// </summary>
/// <remarks>
/// <para>
/// This renderer's behavior is similar to Windows Forms error provider.
/// </para>
/// </remarks>
/// <author>Aleksandar Seovic</author>
public class IconValidationErrorsRenderer : AbstractValidationErrorsRenderer
{
private string iconSrc;
/// <summary>
/// Gets or sets the name of the image file to use as an error icon.
/// </summary>
/// <remarks>
/// <para>
/// Image name should be relative to the value of the <see cref="Spring.Web.UI.Page.ImagesRoot"/>
/// property, and should not use leading path separator.
/// </para>
/// </remarks>
/// <value>The name of the image file to use as an error icon.</value>
public string IconSrc
{
get { return this.iconSrc; }
set { this.iconSrc = value; }
}
/// <summary>
/// Renders validation errors using specified <see cref="HtmlTextWriter"/>.
/// </summary>
/// <param name="page">Web form instance.</param>
/// <param name="writer">An HTML writer to use.</param>
/// <param name="errors">The list of validation errors.</param>
public override void RenderErrors(Page page, HtmlTextWriter writer, IList errors)
{
if (errors != null && errors.Count > 0)
{
StringBuilder sb = new StringBuilder();
string separator = "";
foreach (string error in errors)
{
sb.Append(separator).Append(error);
separator = "\n";
}
writer.AddAttribute(HtmlTextWriterAttribute.Src, page.ImagesRoot + "/" + IconSrc);
writer.AddAttribute(HtmlTextWriterAttribute.Title, sb.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
}
}
}
}
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