1 // Permission is hereby granted, free of charge, to any person obtaining
2 // a copy of this software and associated documentation files (the
3 // "Software"), to deal in the Software without restriction, including
4 // without limitation the rights to use, copy, modify, merge, publish,
5 // distribute, sublicense, and/or sell copies of the Software, and to
6 // permit persons to whom the Software is furnished to do so, subject to
7 // the following conditions:
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
23 // Peter Bartok (pbartok@novell.com)
29 using System.Reflection;
31 namespace System.Windows.Forms {
32 public abstract class FeatureSupport : IFeatureSupport {
33 #region Public Constructors
34 protected FeatureSupport() {
36 #endregion // Public Constructors
38 #region Private and Internal Methods
39 private static IFeatureSupport FeatureObject(string class_name) {
42 class_type = Type.GetType(class_name);
43 if ((class_type != null) && (typeof(IFeatureSupport).IsAssignableFrom(class_type))) {
46 ctor = class_type.GetConstructor(Type.EmptyTypes);
48 return ((IFeatureSupport)ctor.Invoke(new Object[0]));
54 #endregion // Private and Internal Methods
56 #region Public Static Methods
57 public static Version GetVersionPresent(string featureClassName, string featureConstName) {
60 obj = FeatureObject(featureClassName);
62 return obj.GetVersionPresent(featureConstName);
67 public static bool IsPresent(string featureClassName, string featureConstName) {
70 obj = FeatureObject(featureClassName);
72 return obj.IsPresent(featureConstName);
78 public static bool IsPresent(string featureClassName, string featureConstName, Version minimumVersion) {
81 obj = FeatureObject(featureClassName);
83 return obj.IsPresent(featureConstName, minimumVersion);
88 #endregion // Public Static Methods
90 #region Public Instance Methods
91 public abstract Version GetVersionPresent(object feature);
93 public virtual bool IsPresent(object feature) {
94 if (GetVersionPresent(feature) != null) {
101 public virtual bool IsPresent(object feature, Version minimumVersion) {
106 version = GetVersionPresent(feature);
108 if ((version != null) && (version >= minimumVersion)) {
114 #endregion // Public Instance Methods