PropertyTabAttribute.cs :  » 2.6.4-mono-.net-core » System.ComponentModel » System » ComponentModel » C# / CSharp Open Source

//
// System.ComponentModel.PropertyTabAttribute
//
// Authors:
//  Martin Willemoes Hansen (mwh@sysrq.dk)
//  Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//  Ivan N. Zlatev (contact@i-nz.net)
//
// (C) 2003 Martin Willemoes Hansen
// (C) 2003 Andreas Nahr
// (C) 2008 Novell, Inc
//

//
// 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;
using System.Reflection;

namespace System.ComponentModel{
  [AttributeUsage(AttributeTargets.All)]
  public class PropertyTabAttribute : Attribute
  {

    private Type[] tabs;
    private PropertyTabScope[] scopes;


    public PropertyTabAttribute()
    {
      tabs = Type.EmptyTypes;
      scopes = new PropertyTabScope[0];
    }

    public PropertyTabAttribute (string tabClassName) : this (tabClassName, PropertyTabScope.Component)
    {
    }

    public PropertyTabAttribute (Type tabClass) : this (tabClass, PropertyTabScope.Component)
    {
    }

    public PropertyTabAttribute (string tabClassName, PropertyTabScope tabScope)
    {
      if (tabClassName == null)
        throw new ArgumentNullException ("tabClassName");
      this.InitializeArrays (new string[] { tabClassName }, new PropertyTabScope[] { tabScope });
    }

    public PropertyTabAttribute (Type tabClass, PropertyTabScope tabScope)
    {
      if (tabClass == null)
        throw new ArgumentNullException ("tabClass");
      this.InitializeArrays (new Type[] { tabClass }, new PropertyTabScope[] { tabScope });
    }

    public Type[] TabClasses {
      get { return tabs; }
    }

    public PropertyTabScope[] TabScopes {
      get { return scopes; }
    }

    protected string[] TabClassNames {
      get {
        string[] names = new string[tabs.Length];
        for (int i=0; i < tabs.Length; i++)
          names[i] = tabs[i].Name;
        return names;
      }
    }

    public override bool Equals (object other)
    {
      if (other is PropertyTabAttribute)
        return Equals ((PropertyTabAttribute)other);
      return false;
    }

    public bool Equals (PropertyTabAttribute other)
    {
      if (other != this) {
        if (other.TabClasses.Length != tabs.Length)
          return false;

        for (int i=0; i < tabs.Length; i++) {
          if (tabs[i] != other.TabClasses[i])
            return false;
        }
      }
      return true;
    }

    public override int GetHashCode()
    {
      return base.GetHashCode ();
    }

    protected void InitializeArrays (string[] tabClassNames, PropertyTabScope[] tabScopes)
    {
      if (tabScopes == null)
        throw new ArgumentNullException ("tabScopes");
      if (tabClassNames == null)
        throw new ArgumentNullException ("tabClassNames");

      scopes = tabScopes;
      tabs = new Type[tabClassNames.Length];
      for (int i = 0; i < tabClassNames.Length; i++)
        tabs[i] = GetTypeFromName (tabClassNames[i]);
    }

    protected void InitializeArrays (Type[] tabClasses, PropertyTabScope[] tabScopes)
    {
      if (tabScopes == null)
        throw new ArgumentNullException ("tabScopes");
      if (tabClasses == null)
        throw new ArgumentNullException ("tabClasses");
      if (tabClasses.Length != tabScopes.Length)
        throw new ArgumentException ("tabClasses.Length != tabScopes.Length");

      tabs = tabClasses;
      scopes = tabScopes;
    }

    private Type GetTypeFromName (string typeName)
    {
      if (typeName == null)
        throw new ArgumentNullException ("typeName");

      int index = typeName.IndexOf (",");
      if (index != -1) {
        string typeNameOnly = typeName.Substring (0, index);
        string assemblyName = typeName.Substring (index + 1);
        Assembly assembly = Assembly.Load (assemblyName);
        if (assembly != null)
          return assembly.GetType (typeNameOnly, true);
      }
      return Type.GetType (typeName, true);
    }
  }
}