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//
// System.Web.UI.HtmlControls.HtmlControl.cs
//
// Author
// Bob Smith <bob@thestuff.net>
//
//
// (C) Bob Smith
// Copyright (C) 2005-2010 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Globalization;
using System.Security.Permissions;
namespace System.Web.UI.HtmlControls{
// CAS
[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
// attributes
[ToolboxItem(false)]
[Designer ("System.Web.UI.Design.HtmlIntrinsicControlDesigner, " + Consts.AssemblySystem_Design,
"System.ComponentModel.Design.IDesigner")]
public abstract class HtmlControl : Control, IAttributeAccessor
{
internal string _tagName;
AttributeCollection _attributes;
protected HtmlControl() : this ("span") {}
protected HtmlControl(string tag)
{
_tagName = tag;
}
protected override ControlCollection CreateControlCollection ()
{
return new EmptyControlCollection (this);
}
internal static string AttributeToString(int n){
if (n != -1)return n.ToString(NumberFormatInfo.InvariantInfo);
return null;
}
internal static string AttributeToString(string s){
if (s != null && s.Length != 0) return s;
return null;
}
internal void PreProcessRelativeReference(HtmlTextWriter writer, string attribName){
string attr = Attributes[attribName];
if (attr != null){
if (attr.Length != 0){
try{
attr = ResolveClientUrl(attr);
}
catch (Exception) {
throw new HttpException(attribName + " property had malformed url");
}
writer.WriteAttribute(attribName, attr);
Attributes.Remove(attribName);
}
}
}
/* keep these two methods in sync with the
* IAttributeAccessor iface methods below */
protected virtual string GetAttribute (string name)
{
return Attributes[name];
}
protected virtual void SetAttribute (string name, string value)
{
Attributes[name] = value;
}
string System.Web.UI.IAttributeAccessor.GetAttribute(string name){
return Attributes[name];
}
void System.Web.UI.IAttributeAccessor.SetAttribute(string name, string value){
Attributes[name] = value;
}
protected virtual void RenderBeginTag (HtmlTextWriter writer)
{
writer.WriteBeginTag (TagName);
RenderAttributes (writer);
writer.Write ('>');
}
protected internal override void Render (HtmlTextWriter writer)
{
RenderBeginTag (writer);
}
protected virtual void RenderAttributes(HtmlTextWriter writer){
if (ID != null){
writer.WriteAttribute("id",ClientID);
}
Attributes.Render(writer);
}
[Browsable(false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
public AttributeCollection Attributes {
get {
if (_attributes == null)
_attributes = new AttributeCollection (ViewState);
return _attributes;
}
}
[DefaultValue(false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[WebSysDescription("")]
[WebCategory("Behavior")]
[TypeConverter (typeof(MinimizableAttributeTypeConverter))]
public bool Disabled {
get {
string disableAttr = Attributes["disabled"] as string;
return (disableAttr != null);
}
set {
if (!value)
Attributes.Remove ("disabled");
else
Attributes["disabled"] = "disabled";
}
}
[Browsable(false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
public CssStyleCollection Style {
get { return Attributes.CssStyle; }
}
[DefaultValue("")]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[WebSysDescription("")]
[WebCategory("Appearance")]
public virtual string TagName {
get { return _tagName; }
}
protected override bool ViewStateIgnoresCase {
get {
return true;
}
}
}
}
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